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authorKaren Arutyunov <karen@codesynthesis.com>2022-02-17 16:33:27 +0300
committerKaren Arutyunov <karen@codesynthesis.com>2022-02-18 17:15:18 +0300
commit2835794b28d482b1e391dc85f79dfa91f9e63d3e (patch)
tree9d6378809644329c62df5caef536337566b9a86f /libbuild2
parent68da2afcaa84479142e80e23712793f6ed3e2beb (diff)
Move parse_cmdline() to libbuild2
Diffstat (limited to 'libbuild2')
-rw-r--r--libbuild2/b-options.cxx1710
-rw-r--r--libbuild2/b-options.hxx726
-rw-r--r--libbuild2/b-options.ixx585
-rw-r--r--libbuild2/b.cli751
-rw-r--r--libbuild2/buildfile46
-rw-r--r--libbuild2/cmdline.cxx408
-rw-r--r--libbuild2/cmdline.hxx29
-rw-r--r--libbuild2/types-parsers.cxx53
-rw-r--r--libbuild2/types-parsers.hxx48
9 files changed, 4347 insertions, 9 deletions
diff --git a/libbuild2/b-options.cxx b/libbuild2/b-options.cxx
new file mode 100644
index 0000000..86f5bfe
--- /dev/null
+++ b/libbuild2/b-options.cxx
@@ -0,0 +1,1710 @@
+// -*- C++ -*-
+//
+// This file was generated by CLI, a command line interface
+// compiler for C++.
+//
+
+// Begin prologue.
+//
+#include <libbuild2/types-parsers.hxx>
+//
+// End prologue.
+
+#include <libbuild2/b-options.hxx>
+
+#include <map>
+#include <set>
+#include <string>
+#include <vector>
+#include <utility>
+#include <ostream>
+#include <sstream>
+#include <cstring>
+#include <fstream>
+
+namespace build2
+{
+ namespace build
+ {
+ namespace cli
+ {
+ // unknown_option
+ //
+ unknown_option::
+ ~unknown_option () throw ()
+ {
+ }
+
+ void unknown_option::
+ print (::std::ostream& os) const
+ {
+ os << "unknown option '" << option ().c_str () << "'";
+ }
+
+ const char* unknown_option::
+ what () const throw ()
+ {
+ return "unknown option";
+ }
+
+ // unknown_argument
+ //
+ unknown_argument::
+ ~unknown_argument () throw ()
+ {
+ }
+
+ void unknown_argument::
+ print (::std::ostream& os) const
+ {
+ os << "unknown argument '" << argument ().c_str () << "'";
+ }
+
+ const char* unknown_argument::
+ what () const throw ()
+ {
+ return "unknown argument";
+ }
+
+ // missing_value
+ //
+ missing_value::
+ ~missing_value () throw ()
+ {
+ }
+
+ void missing_value::
+ print (::std::ostream& os) const
+ {
+ os << "missing value for option '" << option ().c_str () << "'";
+ }
+
+ const char* missing_value::
+ what () const throw ()
+ {
+ return "missing option value";
+ }
+
+ // invalid_value
+ //
+ invalid_value::
+ ~invalid_value () throw ()
+ {
+ }
+
+ void invalid_value::
+ print (::std::ostream& os) const
+ {
+ os << "invalid value '" << value ().c_str () << "' for option '"
+ << option ().c_str () << "'";
+
+ if (!message ().empty ())
+ os << ": " << message ().c_str ();
+ }
+
+ const char* invalid_value::
+ what () const throw ()
+ {
+ return "invalid option value";
+ }
+
+ // eos_reached
+ //
+ void eos_reached::
+ print (::std::ostream& os) const
+ {
+ os << what ();
+ }
+
+ const char* eos_reached::
+ what () const throw ()
+ {
+ return "end of argument stream reached";
+ }
+
+ // file_io_failure
+ //
+ file_io_failure::
+ ~file_io_failure () throw ()
+ {
+ }
+
+ void file_io_failure::
+ print (::std::ostream& os) const
+ {
+ os << "unable to open file '" << file ().c_str () << "' or read failure";
+ }
+
+ const char* file_io_failure::
+ what () const throw ()
+ {
+ return "unable to open file or read failure";
+ }
+
+ // unmatched_quote
+ //
+ unmatched_quote::
+ ~unmatched_quote () throw ()
+ {
+ }
+
+ void unmatched_quote::
+ print (::std::ostream& os) const
+ {
+ os << "unmatched quote in argument '" << argument ().c_str () << "'";
+ }
+
+ const char* unmatched_quote::
+ what () const throw ()
+ {
+ return "unmatched quote";
+ }
+
+ // scanner
+ //
+ scanner::
+ ~scanner ()
+ {
+ }
+
+ // argv_scanner
+ //
+ bool argv_scanner::
+ more ()
+ {
+ return i_ < argc_;
+ }
+
+ const char* argv_scanner::
+ peek ()
+ {
+ if (i_ < argc_)
+ return argv_[i_];
+ else
+ throw eos_reached ();
+ }
+
+ const char* argv_scanner::
+ next ()
+ {
+ if (i_ < argc_)
+ {
+ const char* r (argv_[i_]);
+
+ if (erase_)
+ {
+ for (int i (i_ + 1); i < argc_; ++i)
+ argv_[i - 1] = argv_[i];
+
+ --argc_;
+ argv_[argc_] = 0;
+ }
+ else
+ ++i_;
+
+ ++start_position_;
+ return r;
+ }
+ else
+ throw eos_reached ();
+ }
+
+ void argv_scanner::
+ skip ()
+ {
+ if (i_ < argc_)
+ {
+ ++i_;
+ ++start_position_;
+ }
+ else
+ throw eos_reached ();
+ }
+
+ std::size_t argv_scanner::
+ position ()
+ {
+ return start_position_;
+ }
+
+ // argv_file_scanner
+ //
+ int argv_file_scanner::zero_argc_ = 0;
+ std::string argv_file_scanner::empty_string_;
+
+ bool argv_file_scanner::
+ more ()
+ {
+ if (!args_.empty ())
+ return true;
+
+ while (base::more ())
+ {
+ // See if the next argument is the file option.
+ //
+ const char* a (base::peek ());
+ const option_info* oi = 0;
+ const char* ov = 0;
+
+ if (!skip_)
+ {
+ if ((oi = find (a)) != 0)
+ {
+ base::next ();
+
+ if (!base::more ())
+ throw missing_value (a);
+
+ ov = base::next ();
+ }
+ else if (std::strncmp (a, "-", 1) == 0)
+ {
+ if ((ov = std::strchr (a, '=')) != 0)
+ {
+ std::string o (a, 0, ov - a);
+ if ((oi = find (o.c_str ())) != 0)
+ {
+ base::next ();
+ ++ov;
+ }
+ }
+ }
+ }
+
+ if (oi != 0)
+ {
+ if (oi->search_func != 0)
+ {
+ std::string f (oi->search_func (ov, oi->arg));
+
+ if (!f.empty ())
+ load (f);
+ }
+ else
+ load (ov);
+
+ if (!args_.empty ())
+ return true;
+ }
+ else
+ {
+ if (!skip_)
+ skip_ = (std::strcmp (a, "--") == 0);
+
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ const char* argv_file_scanner::
+ peek ()
+ {
+ if (!more ())
+ throw eos_reached ();
+
+ return args_.empty () ? base::peek () : args_.front ().value.c_str ();
+ }
+
+ const std::string& argv_file_scanner::
+ peek_file ()
+ {
+ if (!more ())
+ throw eos_reached ();
+
+ return args_.empty () ? empty_string_ : *args_.front ().file;
+ }
+
+ std::size_t argv_file_scanner::
+ peek_line ()
+ {
+ if (!more ())
+ throw eos_reached ();
+
+ return args_.empty () ? 0 : args_.front ().line;
+ }
+
+ const char* argv_file_scanner::
+ next ()
+ {
+ if (!more ())
+ throw eos_reached ();
+
+ if (args_.empty ())
+ return base::next ();
+ else
+ {
+ hold_[i_ == 0 ? ++i_ : --i_].swap (args_.front ().value);
+ args_.pop_front ();
+ ++start_position_;
+ return hold_[i_].c_str ();
+ }
+ }
+
+ void argv_file_scanner::
+ skip ()
+ {
+ if (!more ())
+ throw eos_reached ();
+
+ if (args_.empty ())
+ return base::skip ();
+ else
+ {
+ args_.pop_front ();
+ ++start_position_;
+ }
+ }
+
+ const argv_file_scanner::option_info* argv_file_scanner::
+ find (const char* a) const
+ {
+ for (std::size_t i (0); i < options_count_; ++i)
+ if (std::strcmp (a, options_[i].option) == 0)
+ return &options_[i];
+
+ return 0;
+ }
+
+ std::size_t argv_file_scanner::
+ position ()
+ {
+ return start_position_;
+ }
+
+ void argv_file_scanner::
+ load (const std::string& file)
+ {
+ using namespace std;
+
+ ifstream is (file.c_str ());
+
+ if (!is.is_open ())
+ throw file_io_failure (file);
+
+ files_.push_back (file);
+
+ arg a;
+ a.file = &*files_.rbegin ();
+
+ for (a.line = 1; !is.eof (); ++a.line)
+ {
+ string line;
+ getline (is, line);
+
+ if (is.fail () && !is.eof ())
+ throw file_io_failure (file);
+
+ string::size_type n (line.size ());
+
+ // Trim the line from leading and trailing whitespaces.
+ //
+ if (n != 0)
+ {
+ const char* f (line.c_str ());
+ const char* l (f + n);
+
+ const char* of (f);
+ while (f < l && (*f == ' ' || *f == '\t' || *f == '\r'))
+ ++f;
+
+ --l;
+
+ const char* ol (l);
+ while (l > f && (*l == ' ' || *l == '\t' || *l == '\r'))
+ --l;
+
+ if (f != of || l != ol)
+ line = f <= l ? string (f, l - f + 1) : string ();
+ }
+
+ // Ignore empty lines, those that start with #.
+ //
+ if (line.empty () || line[0] == '#')
+ continue;
+
+ string::size_type p (string::npos);
+ if (line.compare (0, 1, "-") == 0)
+ {
+ p = line.find (' ');
+
+ string::size_type q (line.find ('='));
+ if (q != string::npos && q < p)
+ p = q;
+ }
+
+ string s1;
+ if (p != string::npos)
+ {
+ s1.assign (line, 0, p);
+
+ // Skip leading whitespaces in the argument.
+ //
+ if (line[p] == '=')
+ ++p;
+ else
+ {
+ n = line.size ();
+ for (++p; p < n; ++p)
+ {
+ char c (line[p]);
+ if (c != ' ' && c != '\t' && c != '\r')
+ break;
+ }
+ }
+ }
+ else if (!skip_)
+ skip_ = (line == "--");
+
+ string s2 (line, p != string::npos ? p : 0);
+
+ // If the string (which is an option value or argument) is
+ // wrapped in quotes, remove them.
+ //
+ n = s2.size ();
+ char cf (s2[0]), cl (s2[n - 1]);
+
+ if (cf == '"' || cf == '\'' || cl == '"' || cl == '\'')
+ {
+ if (n == 1 || cf != cl)
+ throw unmatched_quote (s2);
+
+ s2 = string (s2, 1, n - 2);
+ }
+
+ if (!s1.empty ())
+ {
+ // See if this is another file option.
+ //
+ const option_info* oi;
+ if (!skip_ && (oi = find (s1.c_str ())))
+ {
+ if (s2.empty ())
+ throw missing_value (oi->option);
+
+ if (oi->search_func != 0)
+ {
+ string f (oi->search_func (s2.c_str (), oi->arg));
+ if (!f.empty ())
+ load (f);
+ }
+ else
+ {
+ // If the path of the file being parsed is not simple and the
+ // path of the file that needs to be loaded is relative, then
+ // complete the latter using the former as a base.
+ //
+#ifndef _WIN32
+ string::size_type p (file.find_last_of ('/'));
+ bool c (p != string::npos && s2[0] != '/');
+#else
+ string::size_type p (file.find_last_of ("/\\"));
+ bool c (p != string::npos && s2[1] != ':');
+#endif
+ if (c)
+ s2.insert (0, file, 0, p + 1);
+
+ load (s2);
+ }
+
+ continue;
+ }
+
+ a.value = s1;
+ args_.push_back (a);
+ }
+
+ a.value = s2;
+ args_.push_back (a);
+ }
+ }
+
+ template <typename X>
+ struct parser
+ {
+ static void
+ parse (X& x, bool& xs, scanner& s)
+ {
+ using namespace std;
+
+ const char* o (s.next ());
+ if (s.more ())
+ {
+ string v (s.next ());
+ istringstream is (v);
+ if (!(is >> x && is.peek () == istringstream::traits_type::eof ()))
+ throw invalid_value (o, v);
+ }
+ else
+ throw missing_value (o);
+
+ xs = true;
+ }
+
+ static void
+ merge (X& b, const X& a)
+ {
+ b = a;
+ }
+ };
+
+ template <>
+ struct parser<bool>
+ {
+ static void
+ parse (bool& x, scanner& s)
+ {
+ s.next ();
+ x = true;
+ }
+
+ static void
+ merge (bool& b, const bool&)
+ {
+ b = true;
+ }
+ };
+
+ template <>
+ struct parser<std::string>
+ {
+ static void
+ parse (std::string& x, bool& xs, scanner& s)
+ {
+ const char* o (s.next ());
+
+ if (s.more ())
+ x = s.next ();
+ else
+ throw missing_value (o);
+
+ xs = true;
+ }
+
+ static void
+ merge (std::string& b, const std::string& a)
+ {
+ b = a;
+ }
+ };
+
+ template <typename X>
+ struct parser<std::pair<X, std::size_t> >
+ {
+ static void
+ parse (std::pair<X, std::size_t>& x, bool& xs, scanner& s)
+ {
+ x.second = s.position ();
+ parser<X>::parse (x.first, xs, s);
+ }
+
+ static void
+ merge (std::pair<X, std::size_t>& b, const std::pair<X, std::size_t>& a)
+ {
+ b = a;
+ }
+ };
+
+ template <typename X>
+ struct parser<std::vector<X> >
+ {
+ static void
+ parse (std::vector<X>& c, bool& xs, scanner& s)
+ {
+ X x;
+ bool dummy;
+ parser<X>::parse (x, dummy, s);
+ c.push_back (x);
+ xs = true;
+ }
+
+ static void
+ merge (std::vector<X>& b, const std::vector<X>& a)
+ {
+ b.insert (b.end (), a.begin (), a.end ());
+ }
+ };
+
+ template <typename X, typename C>
+ struct parser<std::set<X, C> >
+ {
+ static void
+ parse (std::set<X, C>& c, bool& xs, scanner& s)
+ {
+ X x;
+ bool dummy;
+ parser<X>::parse (x, dummy, s);
+ c.insert (x);
+ xs = true;
+ }
+
+ static void
+ merge (std::set<X, C>& b, const std::set<X, C>& a)
+ {
+ b.insert (a.begin (), a.end ());
+ }
+ };
+
+ template <typename K, typename V, typename C>
+ struct parser<std::map<K, V, C> >
+ {
+ static void
+ parse (std::map<K, V, C>& m, bool& xs, scanner& s)
+ {
+ const char* o (s.next ());
+
+ if (s.more ())
+ {
+ std::size_t pos (s.position ());
+ std::string ov (s.next ());
+ std::string::size_type p = ov.find ('=');
+
+ K k = K ();
+ V v = V ();
+ std::string kstr (ov, 0, p);
+ std::string vstr (ov, (p != std::string::npos ? p + 1 : ov.size ()));
+
+ int ac (2);
+ char* av[] =
+ {
+ const_cast<char*> (o),
+ 0
+ };
+
+ bool dummy;
+ if (!kstr.empty ())
+ {
+ av[1] = const_cast<char*> (kstr.c_str ());
+ argv_scanner s (0, ac, av, false, pos);
+ parser<K>::parse (k, dummy, s);
+ }
+
+ if (!vstr.empty ())
+ {
+ av[1] = const_cast<char*> (vstr.c_str ());
+ argv_scanner s (0, ac, av, false, pos);
+ parser<V>::parse (v, dummy, s);
+ }
+
+ m[k] = v;
+ }
+ else
+ throw missing_value (o);
+
+ xs = true;
+ }
+
+ static void
+ merge (std::map<K, V, C>& b, const std::map<K, V, C>& a)
+ {
+ for (typename std::map<K, V, C>::const_iterator i (a.begin ());
+ i != a.end ();
+ ++i)
+ b[i->first] = i->second;
+ }
+ };
+
+ template <typename X, typename T, T X::*M>
+ void
+ thunk (X& x, scanner& s)
+ {
+ parser<T>::parse (x.*M, s);
+ }
+
+ template <typename X, typename T, T X::*M, bool X::*S>
+ void
+ thunk (X& x, scanner& s)
+ {
+ parser<T>::parse (x.*M, x.*S, s);
+ }
+ }
+ }
+}
+
+#include <map>
+#include <cstring>
+
+namespace build2
+{
+ // options
+ //
+
+ options::
+ options ()
+ : build2_metadata_ (),
+ build2_metadata_specified_ (false),
+ v_ (),
+ V_ (),
+ quiet_ (),
+ silent_ (),
+ verbose_ (1),
+ verbose_specified_ (false),
+ stat_ (),
+ dump_ (),
+ dump_specified_ (false),
+ progress_ (),
+ no_progress_ (),
+ jobs_ (),
+ jobs_specified_ (false),
+ max_jobs_ (),
+ max_jobs_specified_ (false),
+ queue_depth_ (4),
+ queue_depth_specified_ (false),
+ file_cache_ (),
+ file_cache_specified_ (false),
+ max_stack_ (),
+ max_stack_specified_ (false),
+ serial_stop_ (),
+ dry_run_ (),
+ match_only_ (),
+ no_external_modules_ (),
+ structured_result_ (),
+ mtime_check_ (),
+ no_mtime_check_ (),
+ no_column_ (),
+ no_line_ (),
+ buildfile_ (),
+ buildfile_specified_ (false),
+ config_guess_ (),
+ config_guess_specified_ (false),
+ config_sub_ (),
+ config_sub_specified_ (false),
+ pager_ (),
+ pager_specified_ (false),
+ pager_option_ (),
+ pager_option_specified_ (false),
+ options_file_ (),
+ options_file_specified_ (false),
+ default_options_ (),
+ default_options_specified_ (false),
+ no_default_options_ (),
+ help_ (),
+ version_ ()
+ {
+ }
+
+ bool options::
+ parse (int& argc,
+ char** argv,
+ bool erase,
+ ::build2::build::cli::unknown_mode opt,
+ ::build2::build::cli::unknown_mode arg)
+ {
+ ::build2::build::cli::argv_scanner s (argc, argv, erase);
+ bool r = _parse (s, opt, arg);
+ return r;
+ }
+
+ bool options::
+ parse (int start,
+ int& argc,
+ char** argv,
+ bool erase,
+ ::build2::build::cli::unknown_mode opt,
+ ::build2::build::cli::unknown_mode arg)
+ {
+ ::build2::build::cli::argv_scanner s (start, argc, argv, erase);
+ bool r = _parse (s, opt, arg);
+ return r;
+ }
+
+ bool options::
+ parse (int& argc,
+ char** argv,
+ int& end,
+ bool erase,
+ ::build2::build::cli::unknown_mode opt,
+ ::build2::build::cli::unknown_mode arg)
+ {
+ ::build2::build::cli::argv_scanner s (argc, argv, erase);
+ bool r = _parse (s, opt, arg);
+ end = s.end ();
+ return r;
+ }
+
+ bool options::
+ parse (int start,
+ int& argc,
+ char** argv,
+ int& end,
+ bool erase,
+ ::build2::build::cli::unknown_mode opt,
+ ::build2::build::cli::unknown_mode arg)
+ {
+ ::build2::build::cli::argv_scanner s (start, argc, argv, erase);
+ bool r = _parse (s, opt, arg);
+ end = s.end ();
+ return r;
+ }
+
+ bool options::
+ parse (::build2::build::cli::scanner& s,
+ ::build2::build::cli::unknown_mode opt,
+ ::build2::build::cli::unknown_mode arg)
+ {
+ bool r = _parse (s, opt, arg);
+ return r;
+ }
+
+ void options::
+ merge (const options& a)
+ {
+ CLI_POTENTIALLY_UNUSED (a);
+
+ if (a.build2_metadata_specified_)
+ {
+ ::build2::build::cli::parser< uint64_t>::merge (
+ this->build2_metadata_, a.build2_metadata_);
+ this->build2_metadata_specified_ = true;
+ }
+
+ if (a.v_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->v_, a.v_);
+ }
+
+ if (a.V_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->V_, a.V_);
+ }
+
+ if (a.quiet_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->quiet_, a.quiet_);
+ }
+
+ if (a.silent_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->silent_, a.silent_);
+ }
+
+ if (a.verbose_specified_)
+ {
+ ::build2::build::cli::parser< uint16_t>::merge (
+ this->verbose_, a.verbose_);
+ this->verbose_specified_ = true;
+ }
+
+ if (a.stat_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->stat_, a.stat_);
+ }
+
+ if (a.dump_specified_)
+ {
+ ::build2::build::cli::parser< std::set<string>>::merge (
+ this->dump_, a.dump_);
+ this->dump_specified_ = true;
+ }
+
+ if (a.progress_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->progress_, a.progress_);
+ }
+
+ if (a.no_progress_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_progress_, a.no_progress_);
+ }
+
+ if (a.jobs_specified_)
+ {
+ ::build2::build::cli::parser< size_t>::merge (
+ this->jobs_, a.jobs_);
+ this->jobs_specified_ = true;
+ }
+
+ if (a.max_jobs_specified_)
+ {
+ ::build2::build::cli::parser< size_t>::merge (
+ this->max_jobs_, a.max_jobs_);
+ this->max_jobs_specified_ = true;
+ }
+
+ if (a.queue_depth_specified_)
+ {
+ ::build2::build::cli::parser< size_t>::merge (
+ this->queue_depth_, a.queue_depth_);
+ this->queue_depth_specified_ = true;
+ }
+
+ if (a.file_cache_specified_)
+ {
+ ::build2::build::cli::parser< string>::merge (
+ this->file_cache_, a.file_cache_);
+ this->file_cache_specified_ = true;
+ }
+
+ if (a.max_stack_specified_)
+ {
+ ::build2::build::cli::parser< size_t>::merge (
+ this->max_stack_, a.max_stack_);
+ this->max_stack_specified_ = true;
+ }
+
+ if (a.serial_stop_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->serial_stop_, a.serial_stop_);
+ }
+
+ if (a.dry_run_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->dry_run_, a.dry_run_);
+ }
+
+ if (a.match_only_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->match_only_, a.match_only_);
+ }
+
+ if (a.no_external_modules_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_external_modules_, a.no_external_modules_);
+ }
+
+ if (a.structured_result_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->structured_result_, a.structured_result_);
+ }
+
+ if (a.mtime_check_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->mtime_check_, a.mtime_check_);
+ }
+
+ if (a.no_mtime_check_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_mtime_check_, a.no_mtime_check_);
+ }
+
+ if (a.no_column_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_column_, a.no_column_);
+ }
+
+ if (a.no_line_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_line_, a.no_line_);
+ }
+
+ if (a.buildfile_specified_)
+ {
+ ::build2::build::cli::parser< path>::merge (
+ this->buildfile_, a.buildfile_);
+ this->buildfile_specified_ = true;
+ }
+
+ if (a.config_guess_specified_)
+ {
+ ::build2::build::cli::parser< path>::merge (
+ this->config_guess_, a.config_guess_);
+ this->config_guess_specified_ = true;
+ }
+
+ if (a.config_sub_specified_)
+ {
+ ::build2::build::cli::parser< path>::merge (
+ this->config_sub_, a.config_sub_);
+ this->config_sub_specified_ = true;
+ }
+
+ if (a.pager_specified_)
+ {
+ ::build2::build::cli::parser< string>::merge (
+ this->pager_, a.pager_);
+ this->pager_specified_ = true;
+ }
+
+ if (a.pager_option_specified_)
+ {
+ ::build2::build::cli::parser< strings>::merge (
+ this->pager_option_, a.pager_option_);
+ this->pager_option_specified_ = true;
+ }
+
+ if (a.options_file_specified_)
+ {
+ ::build2::build::cli::parser< string>::merge (
+ this->options_file_, a.options_file_);
+ this->options_file_specified_ = true;
+ }
+
+ if (a.default_options_specified_)
+ {
+ ::build2::build::cli::parser< dir_path>::merge (
+ this->default_options_, a.default_options_);
+ this->default_options_specified_ = true;
+ }
+
+ if (a.no_default_options_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->no_default_options_, a.no_default_options_);
+ }
+
+ if (a.help_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->help_, a.help_);
+ }
+
+ if (a.version_)
+ {
+ ::build2::build::cli::parser< bool>::merge (
+ this->version_, a.version_);
+ }
+ }
+
+ ::build2::build::cli::usage_para options::
+ print_usage (::std::ostream& os, ::build2::build::cli::usage_para p)
+ {
+ CLI_POTENTIALLY_UNUSED (os);
+
+ if (p != ::build2::build::cli::usage_para::none)
+ os << ::std::endl;
+
+ os << "\033[1mOPTIONS\033[0m" << ::std::endl;
+
+ os << std::endl
+ << "\033[1m-v\033[0m Print actual commands being executed. This options is" << ::std::endl
+ << " equivalent to \033[1m--verbose 2\033[0m." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m-V\033[0m Print all underlying commands being executed. This" << ::std::endl
+ << " options is equivalent to \033[1m--verbose 3\033[0m." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--quiet\033[0m|\033[1m-q\033[0m Run quietly, only printing error messages in most" << ::std::endl
+ << " contexts. In certain contexts (for example, while" << ::std::endl
+ << " updating build system modules) this verbosity level may" << ::std::endl
+ << " be ignored. Use \033[1m--silent\033[0m to run quietly in all contexts." << ::std::endl
+ << " This option is equivalent to \033[1m--verbose 0\033[0m." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--silent\033[0m Run quietly, only printing error messages in all" << ::std::endl
+ << " contexts." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--verbose\033[0m \033[4mlevel\033[0m Set the diagnostics verbosity to \033[4mlevel\033[0m between 0 and 6." << ::std::endl
+ << " Level 0 disables any non-error messages (but see the" << ::std::endl
+ << " difference between \033[1m--quiet\033[0m and \033[1m--silent\033[0m) while level 6" << ::std::endl
+ << " produces lots of information, with level 1 being the" << ::std::endl
+ << " default. The following additional types of diagnostics" << ::std::endl
+ << " are produced at each level:" << ::std::endl
+ << ::std::endl
+ << " 1. High-level information messages." << ::std::endl
+ << " 2. Essential underlying commands being executed." << ::std::endl
+ << " 3. All underlying commands being executed." << ::std::endl
+ << " 4. Information that could be helpful to the user." << ::std::endl
+ << " 5. Information that could be helpful to the developer." << ::std::endl
+ << " 6. Even more detailed information." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--stat\033[0m Display build statistics." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--dump\033[0m \033[4mphase\033[0m Dump the build system state after the specified phase." << ::std::endl
+ << " Valid \033[4mphase\033[0m values are \033[1mload\033[0m (after loading \033[1mbuildfiles\033[0m)" << ::std::endl
+ << " and \033[1mmatch\033[0m (after matching rules to targets). Repeat this" << ::std::endl
+ << " option to dump the state after multiple phases." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--progress\033[0m Display build progress. If printing to a terminal the" << ::std::endl
+ << " progress is displayed by default for low verbosity" << ::std::endl
+ << " levels. Use \033[1m--no-progress\033[0m to suppress." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-progress\033[0m Don't display build progress." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--jobs\033[0m|\033[1m-j\033[0m \033[4mnum\033[0m Number of active jobs to perform in parallel. This" << ::std::endl
+ << " includes both the number of active threads inside the" << ::std::endl
+ << " build system as well as the number of external commands" << ::std::endl
+ << " (compilers, linkers, etc) started but not yet finished." << ::std::endl
+ << " If this option is not specified or specified with the \033[1m0\033[0m" << ::std::endl
+ << " value, then the number of available hardware threads is" << ::std::endl
+ << " used." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--max-jobs\033[0m|\033[1m-J\033[0m \033[4mnum\033[0m Maximum number of jobs (threads) to create. The default" << ::std::endl
+ << " is 8x the number of active jobs (\033[1m--jobs|j\033[0m) on 32-bit" << ::std::endl
+ << " architectures and 32x on 64-bit. See the build system" << ::std::endl
+ << " scheduler implementation for details." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--queue-depth\033[0m|\033[1m-Q\033[0m \033[4mnum\033[0m The queue depth as a multiplier over the number of active" << ::std::endl
+ << " jobs. Normally we want a deeper queue if the jobs take" << ::std::endl
+ << " long (for example, compilation) and shorter if they are" << ::std::endl
+ << " quick (for example, simple tests). The default is 4. See" << ::std::endl
+ << " the build system scheduler implementation for details." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--file-cache\033[0m \033[4mimpl\033[0m File cache implementation to use for intermediate build" << ::std::endl
+ << " results. Valid values are \033[1mnoop\033[0m (no caching or" << ::std::endl
+ << " compression) and \033[1msync-lz4\033[0m (no caching with synchronous" << ::std::endl
+ << " LZ4 on-disk compression). If this option is not" << ::std::endl
+ << " specified, then a suitable default implementation is used" << ::std::endl
+ << " (currently \033[1msync-lz4\033[0m)." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--max-stack\033[0m \033[4mnum\033[0m The maximum stack size in KBytes to allow for newly" << ::std::endl
+ << " created threads. For \033[4mpthreads\033[0m-based systems the driver" << ::std::endl
+ << " queries the stack size of the main thread and uses the" << ::std::endl
+ << " same size for creating additional threads. This allows" << ::std::endl
+ << " adjusting the stack size using familiar mechanisms, such" << ::std::endl
+ << " as \033[1mulimit\033[0m. Sometimes, however, the stack size of the main" << ::std::endl
+ << " thread is excessively large. As a result, the driver" << ::std::endl
+ << " checks if it is greater than a predefined limit (64MB on" << ::std::endl
+ << " 64-bit systems and 32MB on 32-bit ones) and caps it to a" << ::std::endl
+ << " more sensible value (8MB) if that's the case. This option" << ::std::endl
+ << " allows you to override this check with the special zero" << ::std::endl
+ << " value indicating that the main thread stack size should" << ::std::endl
+ << " be used as is." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--serial-stop\033[0m|\033[1m-s\033[0m Run serially and stop at the first error. This mode is" << ::std::endl
+ << " useful to investigate build failures that are caused by" << ::std::endl
+ << " build system errors rather than compilation errors. Note" << ::std::endl
+ << " that if you don't want to keep going but still want" << ::std::endl
+ << " parallel execution, add \033[1m--jobs|-j\033[0m (for example \033[1m-j 0\033[0m for" << ::std::endl
+ << " default concurrency)." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--dry-run\033[0m|\033[1m-n\033[0m Print commands without actually executing them. Note that" << ::std::endl
+ << " commands that are required to create an accurate build" << ::std::endl
+ << " state will still be executed and the extracted auxiliary" << ::std::endl
+ << " dependency information saved. In other words, this is not" << ::std::endl
+ << " the \033[4m\"don't touch the filesystem\"\033[0m mode but rather \033[4m\"do" << ::std::endl
+ << " minimum amount of work to show what needs to be done\"\033[0m." << ::std::endl
+ << " Note also that only the \033[1mperform\033[0m meta-operation supports" << ::std::endl
+ << " this mode." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--match-only\033[0m Match the rules but do not execute the operation. This" << ::std::endl
+ << " mode is primarily useful for profiling." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-external-modules\033[0m Don't load external modules during project bootstrap." << ::std::endl
+ << " Note that this option can only be used with" << ::std::endl
+ << " meta-operations that do not load the project's" << ::std::endl
+ << " \033[1mbuildfiles\033[0m, such as \033[1minfo\033[0m." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--structured-result\033[0m Write the result of execution in a structured form. In" << ::std::endl
+ << " this mode, instead of printing to \033[1mSTDERR\033[0m diagnostics" << ::std::endl
+ << " messages about the outcome of executing actions on" << ::std::endl
+ << " targets, the driver writes to \033[1mSTDOUT\033[0m a structured result" << ::std::endl
+ << " description one line per the buildspec action/target" << ::std::endl
+ << " pair. Each line has the following format:" << ::std::endl
+ << ::std::endl
+ << " \033[4mstate\033[0m \033[4mmeta-operation\033[0m \033[4moperation\033[0m \033[4mtarget\033[0m\033[0m" << ::std::endl
+ << ::std::endl
+ << " Where \033[4mstate\033[0m can be one of \033[1munchanged\033[0m, \033[1mchanged\033[0m, or \033[1mfailed\033[0m." << ::std::endl
+ << " If the action is a pre or post operation, then the outer" << ::std::endl
+ << " operation is specified in parenthesis. For example:" << ::std::endl
+ << ::std::endl
+ << " unchanged perform update(test) /tmp/dir{hello/}" << ::std::endl
+ << " changed perform test /tmp/dir{hello/}" << ::std::endl
+ << ::std::endl
+ << " Note that only the \033[1mperform\033[0m meta-operation supports the" << ::std::endl
+ << " structured result output." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--mtime-check\033[0m Perform file modification time sanity checks. These" << ::std::endl
+ << " checks can be helpful in diagnosing spurious rebuilds and" << ::std::endl
+ << " are enabled by default on Windows (which is known not to" << ::std::endl
+ << " guarantee monotonically increasing mtimes) and for the" << ::std::endl
+ << " staged version of the build system on other platforms." << ::std::endl
+ << " Use \033[1m--no-mtime-check\033[0m to disable." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-mtime-check\033[0m Don't perform file modification time sanity checks. See" << ::std::endl
+ << " \033[1m--mtime-check\033[0m for details." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-column\033[0m Don't print column numbers in diagnostics." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-line\033[0m Don't print line and column numbers in diagnostics." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--buildfile\033[0m \033[4mpath\033[0m The alternative file to read build information from. The" << ::std::endl
+ << " default is \033[1mbuildfile\033[0m or \033[1mbuild2file\033[0m, depending on the" << ::std::endl
+ << " project's build file/directory naming scheme. If \033[4mpath\033[0m is" << ::std::endl
+ << " '\033[1m-\033[0m', then read from \033[1mSTDIN\033[0m. Note that this option only" << ::std::endl
+ << " affects the files read as part of the buildspec" << ::std::endl
+ << " processing. Specifically, it has no effect on the \033[1msource\033[0m" << ::std::endl
+ << " and \033[1minclude\033[0m directives. As a result, this option is" << ::std::endl
+ << " primarily intended for testing rather than changing the" << ::std::endl
+ << " build file names in real projects." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--config-guess\033[0m \033[4mpath\033[0m The path to the \033[1mconfig.guess(1)\033[0m script that should be" << ::std::endl
+ << " used to guess the host machine triplet. If this option is" << ::std::endl
+ << " not specified, then \033[1mb\033[0m will fall back on to using the" << ::std::endl
+ << " target it was built for as host." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--config-sub\033[0m \033[4mpath\033[0m The path to the \033[1mconfig.sub(1)\033[0m script that should be used" << ::std::endl
+ << " to canonicalize machine triplets. If this option is not" << ::std::endl
+ << " specified, then \033[1mb\033[0m will use its built-in canonicalization" << ::std::endl
+ << " support which should be sufficient for commonly-used" << ::std::endl
+ << " platforms." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--pager\033[0m \033[4mpath\033[0m The pager program to be used to show long text. Commonly" << ::std::endl
+ << " used pager programs are \033[1mless\033[0m and \033[1mmore\033[0m. You can also" << ::std::endl
+ << " specify additional options that should be passed to the" << ::std::endl
+ << " pager program with \033[1m--pager-option\033[0m. If an empty string is" << ::std::endl
+ << " specified as the pager program, then no pager will be" << ::std::endl
+ << " used. If the pager program is not explicitly specified," << ::std::endl
+ << " then \033[1mb\033[0m will try to use \033[1mless\033[0m. If it is not available, then" << ::std::endl
+ << " no pager will be used." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--pager-option\033[0m \033[4mopt\033[0m Additional option to be passed to the pager program. See" << ::std::endl
+ << " \033[1m--pager\033[0m for more information on the pager program. Repeat" << ::std::endl
+ << " this option to specify multiple pager options." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--options-file\033[0m \033[4mfile\033[0m Read additional options from \033[4mfile\033[0m. Each option should" << ::std::endl
+ << " appear on a separate line optionally followed by space or" << ::std::endl
+ << " equal sign (\033[1m=\033[0m) and an option value. Empty lines and lines" << ::std::endl
+ << " starting with \033[1m#\033[0m are ignored. Option values can be" << ::std::endl
+ << " enclosed in double (\033[1m\"\033[0m) or single (\033[1m'\033[0m) quotes to preserve" << ::std::endl
+ << " leading and trailing whitespaces as well as to specify" << ::std::endl
+ << " empty values. If the value itself contains trailing or" << ::std::endl
+ << " leading quotes, enclose it with an extra pair of quotes," << ::std::endl
+ << " for example \033[1m'\"x\"'\033[0m. Non-leading and non-trailing quotes" << ::std::endl
+ << " are interpreted as being part of the option value." << ::std::endl
+ << ::std::endl
+ << " The semantics of providing options in a file is" << ::std::endl
+ << " equivalent to providing the same set of options in the" << ::std::endl
+ << " same order on the command line at the point where the" << ::std::endl
+ << " \033[1m--options-file\033[0m option is specified except that the shell" << ::std::endl
+ << " escaping and quoting is not required. Repeat this option" << ::std::endl
+ << " to specify more than one options file." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--default-options\033[0m \033[4mdir\033[0m The directory to load additional default options files" << ::std::endl
+ << " from." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--no-default-options\033[0m Don't load default options files." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--help\033[0m Print usage information and exit." << ::std::endl;
+
+ os << std::endl
+ << "\033[1m--version\033[0m Print version and exit." << ::std::endl;
+
+ p = ::build2::build::cli::usage_para::option;
+
+ return p;
+ }
+
+ typedef
+ std::map<std::string, void (*) (options&, ::build2::build::cli::scanner&)>
+ _cli_options_map;
+
+ static _cli_options_map _cli_options_map_;
+
+ struct _cli_options_map_init
+ {
+ _cli_options_map_init ()
+ {
+ _cli_options_map_["--build2-metadata"] =
+ &::build2::build::cli::thunk< options, uint64_t, &options::build2_metadata_,
+ &options::build2_metadata_specified_ >;
+ _cli_options_map_["-v"] =
+ &::build2::build::cli::thunk< options, bool, &options::v_ >;
+ _cli_options_map_["-V"] =
+ &::build2::build::cli::thunk< options, bool, &options::V_ >;
+ _cli_options_map_["--quiet"] =
+ &::build2::build::cli::thunk< options, bool, &options::quiet_ >;
+ _cli_options_map_["-q"] =
+ &::build2::build::cli::thunk< options, bool, &options::quiet_ >;
+ _cli_options_map_["--silent"] =
+ &::build2::build::cli::thunk< options, bool, &options::silent_ >;
+ _cli_options_map_["--verbose"] =
+ &::build2::build::cli::thunk< options, uint16_t, &options::verbose_,
+ &options::verbose_specified_ >;
+ _cli_options_map_["--stat"] =
+ &::build2::build::cli::thunk< options, bool, &options::stat_ >;
+ _cli_options_map_["--dump"] =
+ &::build2::build::cli::thunk< options, std::set<string>, &options::dump_,
+ &options::dump_specified_ >;
+ _cli_options_map_["--progress"] =
+ &::build2::build::cli::thunk< options, bool, &options::progress_ >;
+ _cli_options_map_["--no-progress"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_progress_ >;
+ _cli_options_map_["--jobs"] =
+ &::build2::build::cli::thunk< options, size_t, &options::jobs_,
+ &options::jobs_specified_ >;
+ _cli_options_map_["-j"] =
+ &::build2::build::cli::thunk< options, size_t, &options::jobs_,
+ &options::jobs_specified_ >;
+ _cli_options_map_["--max-jobs"] =
+ &::build2::build::cli::thunk< options, size_t, &options::max_jobs_,
+ &options::max_jobs_specified_ >;
+ _cli_options_map_["-J"] =
+ &::build2::build::cli::thunk< options, size_t, &options::max_jobs_,
+ &options::max_jobs_specified_ >;
+ _cli_options_map_["--queue-depth"] =
+ &::build2::build::cli::thunk< options, size_t, &options::queue_depth_,
+ &options::queue_depth_specified_ >;
+ _cli_options_map_["-Q"] =
+ &::build2::build::cli::thunk< options, size_t, &options::queue_depth_,
+ &options::queue_depth_specified_ >;
+ _cli_options_map_["--file-cache"] =
+ &::build2::build::cli::thunk< options, string, &options::file_cache_,
+ &options::file_cache_specified_ >;
+ _cli_options_map_["--max-stack"] =
+ &::build2::build::cli::thunk< options, size_t, &options::max_stack_,
+ &options::max_stack_specified_ >;
+ _cli_options_map_["--serial-stop"] =
+ &::build2::build::cli::thunk< options, bool, &options::serial_stop_ >;
+ _cli_options_map_["-s"] =
+ &::build2::build::cli::thunk< options, bool, &options::serial_stop_ >;
+ _cli_options_map_["--dry-run"] =
+ &::build2::build::cli::thunk< options, bool, &options::dry_run_ >;
+ _cli_options_map_["-n"] =
+ &::build2::build::cli::thunk< options, bool, &options::dry_run_ >;
+ _cli_options_map_["--match-only"] =
+ &::build2::build::cli::thunk< options, bool, &options::match_only_ >;
+ _cli_options_map_["--no-external-modules"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_external_modules_ >;
+ _cli_options_map_["--structured-result"] =
+ &::build2::build::cli::thunk< options, bool, &options::structured_result_ >;
+ _cli_options_map_["--mtime-check"] =
+ &::build2::build::cli::thunk< options, bool, &options::mtime_check_ >;
+ _cli_options_map_["--no-mtime-check"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_mtime_check_ >;
+ _cli_options_map_["--no-column"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_column_ >;
+ _cli_options_map_["--no-line"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_line_ >;
+ _cli_options_map_["--buildfile"] =
+ &::build2::build::cli::thunk< options, path, &options::buildfile_,
+ &options::buildfile_specified_ >;
+ _cli_options_map_["--config-guess"] =
+ &::build2::build::cli::thunk< options, path, &options::config_guess_,
+ &options::config_guess_specified_ >;
+ _cli_options_map_["--config-sub"] =
+ &::build2::build::cli::thunk< options, path, &options::config_sub_,
+ &options::config_sub_specified_ >;
+ _cli_options_map_["--pager"] =
+ &::build2::build::cli::thunk< options, string, &options::pager_,
+ &options::pager_specified_ >;
+ _cli_options_map_["--pager-option"] =
+ &::build2::build::cli::thunk< options, strings, &options::pager_option_,
+ &options::pager_option_specified_ >;
+ _cli_options_map_["--options-file"] =
+ &::build2::build::cli::thunk< options, string, &options::options_file_,
+ &options::options_file_specified_ >;
+ _cli_options_map_["--default-options"] =
+ &::build2::build::cli::thunk< options, dir_path, &options::default_options_,
+ &options::default_options_specified_ >;
+ _cli_options_map_["--no-default-options"] =
+ &::build2::build::cli::thunk< options, bool, &options::no_default_options_ >;
+ _cli_options_map_["--help"] =
+ &::build2::build::cli::thunk< options, bool, &options::help_ >;
+ _cli_options_map_["--version"] =
+ &::build2::build::cli::thunk< options, bool, &options::version_ >;
+ }
+ };
+
+ static _cli_options_map_init _cli_options_map_init_;
+
+ bool options::
+ _parse (const char* o, ::build2::build::cli::scanner& s)
+ {
+ _cli_options_map::const_iterator i (_cli_options_map_.find (o));
+
+ if (i != _cli_options_map_.end ())
+ {
+ (*(i->second)) (*this, s);
+ return true;
+ }
+
+ return false;
+ }
+
+ bool options::
+ _parse (::build2::build::cli::scanner& s,
+ ::build2::build::cli::unknown_mode opt_mode,
+ ::build2::build::cli::unknown_mode arg_mode)
+ {
+ // Can't skip combined flags (--no-combined-flags).
+ //
+ assert (opt_mode != ::build2::build::cli::unknown_mode::skip);
+
+ bool r = false;
+ bool opt = true;
+
+ while (s.more ())
+ {
+ const char* o = s.peek ();
+
+ if (std::strcmp (o, "--") == 0)
+ {
+ opt = false;
+ }
+
+ if (opt)
+ {
+ if (_parse (o, s))
+ {
+ r = true;
+ continue;
+ }
+
+ if (std::strncmp (o, "-", 1) == 0 && o[1] != '\0')
+ {
+ // Handle combined option values.
+ //
+ std::string co;
+ if (const char* v = std::strchr (o, '='))
+ {
+ co.assign (o, 0, v - o);
+ ++v;
+
+ int ac (2);
+ char* av[] =
+ {
+ const_cast<char*> (co.c_str ()),
+ const_cast<char*> (v)
+ };
+
+ ::build2::build::cli::argv_scanner ns (0, ac, av);
+
+ if (_parse (co.c_str (), ns))
+ {
+ // Parsed the option but not its value?
+ //
+ if (ns.end () != 2)
+ throw ::build2::build::cli::invalid_value (co, v);
+
+ s.next ();
+ r = true;
+ continue;
+ }
+ else
+ {
+ // Set the unknown option and fall through.
+ //
+ o = co.c_str ();
+ }
+ }
+
+ // Handle combined flags.
+ //
+ char cf[3];
+ {
+ const char* p = o + 1;
+ for (; *p != '\0'; ++p)
+ {
+ if (!((*p >= 'a' && *p <= 'z') ||
+ (*p >= 'A' && *p <= 'Z') ||
+ (*p >= '0' && *p <= '9')))
+ break;
+ }
+
+ if (*p == '\0')
+ {
+ for (p = o + 1; *p != '\0'; ++p)
+ {
+ std::strcpy (cf, "-");
+ cf[1] = *p;
+ cf[2] = '\0';
+
+ int ac (1);
+ char* av[] =
+ {
+ cf
+ };
+
+ ::build2::build::cli::argv_scanner ns (0, ac, av);
+
+ if (!_parse (cf, ns))
+ break;
+ }
+
+ if (*p == '\0')
+ {
+ // All handled.
+ //
+ s.next ();
+ r = true;
+ continue;
+ }
+ else
+ {
+ // Set the unknown option and fall through.
+ //
+ o = cf;
+ }
+ }
+ }
+
+ switch (opt_mode)
+ {
+ case ::build2::build::cli::unknown_mode::skip:
+ {
+ s.skip ();
+ r = true;
+ continue;
+ }
+ case ::build2::build::cli::unknown_mode::stop:
+ {
+ break;
+ }
+ case ::build2::build::cli::unknown_mode::fail:
+ {
+ throw ::build2::build::cli::unknown_option (o);
+ }
+ }
+
+ break;
+ }
+ }
+
+ switch (arg_mode)
+ {
+ case ::build2::build::cli::unknown_mode::skip:
+ {
+ s.skip ();
+ r = true;
+ continue;
+ }
+ case ::build2::build::cli::unknown_mode::stop:
+ {
+ break;
+ }
+ case ::build2::build::cli::unknown_mode::fail:
+ {
+ throw ::build2::build::cli::unknown_argument (o);
+ }
+ }
+
+ break;
+ }
+
+ return r;
+ }
+}
+
+namespace build2
+{
+ ::build2::build::cli::usage_para
+ print_b_usage (::std::ostream& os, ::build2::build::cli::usage_para p)
+ {
+ CLI_POTENTIALLY_UNUSED (os);
+
+ if (p != ::build2::build::cli::usage_para::none)
+ os << ::std::endl;
+
+ os << "\033[1mSYNOPSIS\033[0m" << ::std::endl
+ << ::std::endl
+ << "\033[1mb --help\033[0m" << ::std::endl
+ << "\033[1mb --version\033[0m" << ::std::endl
+ << "\033[1mb\033[0m [\033[4moptions\033[0m] [\033[4mvariables\033[0m] [\033[4mbuildspec\033[0m]\033[0m" << ::std::endl
+ << ::std::endl
+ << "\033[4mbuildspec\033[0m = \033[4mmeta-operation\033[0m\033[1m(\033[0m\033[4moperation\033[0m\033[1m(\033[0m\033[4mtarget\033[0m...[\033[1m,\033[0m\033[4mparameters\033[0m]\033[1m)\033[0m...\033[1m)\033[0m...\033[0m" << ::std::endl
+ << ::std::endl
+ << "\033[1mDESCRIPTION\033[0m" << ::std::endl
+ << ::std::endl
+ << "The \033[1mbuild2\033[0m build system driver executes a set of meta-operations on operations" << ::std::endl
+ << "on targets according to the build specification, or \033[4mbuildspec\033[0m for short. This" << ::std::endl
+ << "process can be controlled by specifying driver \033[4moptions\033[0m and build system" << ::std::endl
+ << "\033[4mvariables\033[0m." << ::std::endl
+ << ::std::endl
+ << "Note that \033[4moptions\033[0m, \033[4mvariables\033[0m, and \033[4mbuildspec\033[0m fragments can be specified in any" << ::std::endl
+ << "order. To avoid treating an argument that starts with \033[1m'-'\033[0m as an option, add the" << ::std::endl
+ << "\033[1m'--'\033[0m separator. To avoid treating an argument that contains \033[1m'='\033[0m as a variable," << ::std::endl
+ << "add the second \033[1m'--'\033[0m separator." << ::std::endl;
+
+ p = ::build2::options::print_usage (os, ::build2::build::cli::usage_para::text);
+
+ if (p != ::build2::build::cli::usage_para::none)
+ os << ::std::endl;
+
+ os << "\033[1mDEFAULT OPTIONS FILES\033[0m" << ::std::endl
+ << ::std::endl
+ << "Instead of having a separate config file format for tool configuration, the" << ::std::endl
+ << "\033[1mbuild2\033[0m toolchain uses \033[4mdefault options files\033[0m which contain the same options as" << ::std::endl
+ << "what can be specified on the command line. The default options files are like" << ::std::endl
+ << "options files that one can specify with \033[1m--options-file\033[0m except that they are" << ::std::endl
+ << "loaded by default." << ::std::endl
+ << ::std::endl
+ << "The default options files for the build system driver are called \033[1mb.options\033[0m and" << ::std::endl
+ << "are searched for in the \033[1m.build2/\033[0m subdirectory of the home directory and in the" << ::std::endl
+ << "system directory (for example, \033[1m/etc/build2/\033[0m) if configured. Note that besides" << ::std::endl
+ << "options these files can also contain global variable overrides." << ::std::endl
+ << ::std::endl
+ << "Once the search is complete, the files are loaded in the reverse order, that" << ::std::endl
+ << "is, beginning from the system directory (if any), followed by the home" << ::std::endl
+ << "directory, and finishing off with the options specified on the command line. In" << ::std::endl
+ << "other words, the files are loaded from the more generic to the more specific" << ::std::endl
+ << "with the command line options having the ability to override any values" << ::std::endl
+ << "specified in the default options files." << ::std::endl
+ << ::std::endl
+ << "If a default options file contains \033[1m--no-default-options\033[0m, then the search is" << ::std::endl
+ << "stopped at the directory containing this file and no outer files are loaded. If" << ::std::endl
+ << "this option is specified on the command line, then none of the default options" << ::std::endl
+ << "files are searched for or loaded." << ::std::endl
+ << ::std::endl
+ << "An additional directory containing default options files can be specified with" << ::std::endl
+ << "\033[1m--default-options\033[0m. Its configuration files are loaded after the home directory." << ::std::endl
+ << ::std::endl
+ << "The order in which default options files are loaded is traced at the verbosity" << ::std::endl
+ << "level 3 (\033[1m-V\033[0m option) or higher." << ::std::endl
+ << ::std::endl
+ << "\033[1mEXIT STATUS\033[0m" << ::std::endl
+ << ::std::endl
+ << "Non-zero exit status is returned in case of an error." << ::std::endl;
+
+ os << std::endl
+ << "\033[1mENVIRONMENT\033[0m" << ::std::endl
+ << ::std::endl
+ << "The \033[1mHOME\033[0m environment variable is used to determine the user's home directory." << ::std::endl
+ << "If it is not set, then \033[1mgetpwuid(3)\033[0m is used instead. This value is used to" << ::std::endl
+ << "shorten paths printed in diagnostics by replacing the home directory with \033[1m~/\033[0m." << ::std::endl
+ << "It is also made available to \033[1mbuildfile\033[0m's as the \033[1mbuild.home\033[0m variable." << ::std::endl
+ << ::std::endl
+ << "The \033[1mBUILD2_VAR_OVR\033[0m environment variable is used to propagate global variable" << ::std::endl
+ << "overrides to nested build system driver invocations. Its value is a list of" << ::std::endl
+ << "global variable assignments separated with newlines." << ::std::endl
+ << ::std::endl
+ << "The \033[1mBUILD2_DEF_OPT\033[0m environment variable is used to suppress loading of default" << ::std::endl
+ << "options files in nested build system driver invocations. Its values are \033[1mfalse\033[0m" << ::std::endl
+ << "or \033[1m0\033[0m to suppress and \033[1mtrue\033[0m or \033[1m1\033[0m to load." << ::std::endl;
+
+ p = ::build2::build::cli::usage_para::text;
+
+ return p;
+ }
+}
+
+// Begin epilogue.
+//
+//
+// End epilogue.
+
diff --git a/libbuild2/b-options.hxx b/libbuild2/b-options.hxx
new file mode 100644
index 0000000..dda9f08
--- /dev/null
+++ b/libbuild2/b-options.hxx
@@ -0,0 +1,726 @@
+// -*- C++ -*-
+//
+// This file was generated by CLI, a command line interface
+// compiler for C++.
+//
+
+#ifndef LIBBUILD2_B_OPTIONS_HXX
+#define LIBBUILD2_B_OPTIONS_HXX
+
+// Begin prologue.
+//
+#include <libbuild2/export.hxx>
+//
+// End prologue.
+
+#include <list>
+#include <deque>
+#include <iosfwd>
+#include <string>
+#include <cstddef>
+#include <exception>
+
+#ifndef CLI_POTENTIALLY_UNUSED
+# if defined(_MSC_VER) || defined(__xlC__)
+# define CLI_POTENTIALLY_UNUSED(x) (void*)&x
+# else
+# define CLI_POTENTIALLY_UNUSED(x) (void)x
+# endif
+#endif
+
+namespace build2
+{
+ namespace build
+ {
+ namespace cli
+ {
+ class usage_para
+ {
+ public:
+ enum value
+ {
+ none,
+ text,
+ option
+ };
+
+ usage_para (value);
+
+ operator value () const
+ {
+ return v_;
+ }
+
+ private:
+ value v_;
+ };
+
+ class unknown_mode
+ {
+ public:
+ enum value
+ {
+ skip,
+ stop,
+ fail
+ };
+
+ unknown_mode (value);
+
+ operator value () const
+ {
+ return v_;
+ }
+
+ private:
+ value v_;
+ };
+
+ // Exceptions.
+ //
+
+ class LIBBUILD2_SYMEXPORT exception: public std::exception
+ {
+ public:
+ virtual void
+ print (::std::ostream&) const = 0;
+ };
+
+ ::std::ostream&
+ operator<< (::std::ostream&, const exception&);
+
+ class LIBBUILD2_SYMEXPORT unknown_option: public exception
+ {
+ public:
+ virtual
+ ~unknown_option () throw ();
+
+ unknown_option (const std::string& option);
+
+ const std::string&
+ option () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string option_;
+ };
+
+ class LIBBUILD2_SYMEXPORT unknown_argument: public exception
+ {
+ public:
+ virtual
+ ~unknown_argument () throw ();
+
+ unknown_argument (const std::string& argument);
+
+ const std::string&
+ argument () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string argument_;
+ };
+
+ class LIBBUILD2_SYMEXPORT missing_value: public exception
+ {
+ public:
+ virtual
+ ~missing_value () throw ();
+
+ missing_value (const std::string& option);
+
+ const std::string&
+ option () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string option_;
+ };
+
+ class LIBBUILD2_SYMEXPORT invalid_value: public exception
+ {
+ public:
+ virtual
+ ~invalid_value () throw ();
+
+ invalid_value (const std::string& option,
+ const std::string& value,
+ const std::string& message = std::string ());
+
+ const std::string&
+ option () const;
+
+ const std::string&
+ value () const;
+
+ const std::string&
+ message () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string option_;
+ std::string value_;
+ std::string message_;
+ };
+
+ class LIBBUILD2_SYMEXPORT eos_reached: public exception
+ {
+ public:
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+ };
+
+ class LIBBUILD2_SYMEXPORT file_io_failure: public exception
+ {
+ public:
+ virtual
+ ~file_io_failure () throw ();
+
+ file_io_failure (const std::string& file);
+
+ const std::string&
+ file () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string file_;
+ };
+
+ class LIBBUILD2_SYMEXPORT unmatched_quote: public exception
+ {
+ public:
+ virtual
+ ~unmatched_quote () throw ();
+
+ unmatched_quote (const std::string& argument);
+
+ const std::string&
+ argument () const;
+
+ virtual void
+ print (::std::ostream&) const;
+
+ virtual const char*
+ what () const throw ();
+
+ private:
+ std::string argument_;
+ };
+
+ // Command line argument scanner interface.
+ //
+ // The values returned by next() are guaranteed to be valid
+ // for the two previous arguments up until a call to a third
+ // peek() or next().
+ //
+ // The position() function returns a monotonically-increasing
+ // number which, if stored, can later be used to determine the
+ // relative position of the argument returned by the following
+ // call to next(). Note that if multiple scanners are used to
+ // extract arguments from multiple sources, then the end
+ // position of the previous scanner should be used as the
+ // start position of the next.
+ //
+ class LIBBUILD2_SYMEXPORT scanner
+ {
+ public:
+ virtual
+ ~scanner ();
+
+ virtual bool
+ more () = 0;
+
+ virtual const char*
+ peek () = 0;
+
+ virtual const char*
+ next () = 0;
+
+ virtual void
+ skip () = 0;
+
+ virtual std::size_t
+ position () = 0;
+ };
+
+ class LIBBUILD2_SYMEXPORT argv_scanner: public scanner
+ {
+ public:
+ argv_scanner (int& argc,
+ char** argv,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ argv_scanner (int start,
+ int& argc,
+ char** argv,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ int
+ end () const;
+
+ virtual bool
+ more ();
+
+ virtual const char*
+ peek ();
+
+ virtual const char*
+ next ();
+
+ virtual void
+ skip ();
+
+ virtual std::size_t
+ position ();
+
+ protected:
+ std::size_t start_position_;
+ int i_;
+ int& argc_;
+ char** argv_;
+ bool erase_;
+ };
+
+ class LIBBUILD2_SYMEXPORT argv_file_scanner: public argv_scanner
+ {
+ public:
+ argv_file_scanner (int& argc,
+ char** argv,
+ const std::string& option,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ argv_file_scanner (int start,
+ int& argc,
+ char** argv,
+ const std::string& option,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ argv_file_scanner (const std::string& file,
+ const std::string& option,
+ std::size_t start_position = 0);
+
+ struct option_info
+ {
+ // If search_func is not NULL, it is called, with the arg
+ // value as the second argument, to locate the options file.
+ // If it returns an empty string, then the file is ignored.
+ //
+ const char* option;
+ std::string (*search_func) (const char*, void* arg);
+ void* arg;
+ };
+
+ argv_file_scanner (int& argc,
+ char** argv,
+ const option_info* options,
+ std::size_t options_count,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ argv_file_scanner (int start,
+ int& argc,
+ char** argv,
+ const option_info* options,
+ std::size_t options_count,
+ bool erase = false,
+ std::size_t start_position = 0);
+
+ argv_file_scanner (const std::string& file,
+ const option_info* options = 0,
+ std::size_t options_count = 0,
+ std::size_t start_position = 0);
+
+ virtual bool
+ more ();
+
+ virtual const char*
+ peek ();
+
+ virtual const char*
+ next ();
+
+ virtual void
+ skip ();
+
+ virtual std::size_t
+ position ();
+
+ // Return the file path if the peeked at argument came from a file and
+ // the empty string otherwise. The reference is guaranteed to be valid
+ // till the end of the scanner lifetime.
+ //
+ const std::string&
+ peek_file ();
+
+ // Return the 1-based line number if the peeked at argument came from
+ // a file and zero otherwise.
+ //
+ std::size_t
+ peek_line ();
+
+ private:
+ const option_info*
+ find (const char*) const;
+
+ void
+ load (const std::string& file);
+
+ typedef argv_scanner base;
+
+ const std::string option_;
+ option_info option_info_;
+ const option_info* options_;
+ std::size_t options_count_;
+
+ struct arg
+ {
+ std::string value;
+ const std::string* file;
+ std::size_t line;
+ };
+
+ std::deque<arg> args_;
+ std::list<std::string> files_;
+
+ // Circular buffer of two arguments.
+ //
+ std::string hold_[2];
+ std::size_t i_;
+
+ bool skip_;
+
+ static int zero_argc_;
+ static std::string empty_string_;
+ };
+
+ template <typename X>
+ struct parser;
+ }
+ }
+}
+
+#include <set>
+
+#include <libbuild2/types.hxx>
+
+namespace build2
+{
+ class LIBBUILD2_SYMEXPORT options
+ {
+ public:
+ options ();
+
+ // Return true if anything has been parsed.
+ //
+ bool
+ parse (int& argc,
+ char** argv,
+ bool erase = false,
+ ::build2::build::cli::unknown_mode option = ::build2::build::cli::unknown_mode::fail,
+ ::build2::build::cli::unknown_mode argument = ::build2::build::cli::unknown_mode::stop);
+
+ bool
+ parse (int start,
+ int& argc,
+ char** argv,
+ bool erase = false,
+ ::build2::build::cli::unknown_mode option = ::build2::build::cli::unknown_mode::fail,
+ ::build2::build::cli::unknown_mode argument = ::build2::build::cli::unknown_mode::stop);
+
+ bool
+ parse (int& argc,
+ char** argv,
+ int& end,
+ bool erase = false,
+ ::build2::build::cli::unknown_mode option = ::build2::build::cli::unknown_mode::fail,
+ ::build2::build::cli::unknown_mode argument = ::build2::build::cli::unknown_mode::stop);
+
+ bool
+ parse (int start,
+ int& argc,
+ char** argv,
+ int& end,
+ bool erase = false,
+ ::build2::build::cli::unknown_mode option = ::build2::build::cli::unknown_mode::fail,
+ ::build2::build::cli::unknown_mode argument = ::build2::build::cli::unknown_mode::stop);
+
+ bool
+ parse (::build2::build::cli::scanner&,
+ ::build2::build::cli::unknown_mode option = ::build2::build::cli::unknown_mode::fail,
+ ::build2::build::cli::unknown_mode argument = ::build2::build::cli::unknown_mode::stop);
+
+ // Merge options from the specified instance appending/overriding
+ // them as if they appeared after options in this instance.
+ //
+ void
+ merge (const options&);
+
+ // Option accessors.
+ //
+ const uint64_t&
+ build2_metadata () const;
+
+ bool
+ build2_metadata_specified () const;
+
+ const bool&
+ v () const;
+
+ const bool&
+ V () const;
+
+ const bool&
+ quiet () const;
+
+ const bool&
+ silent () const;
+
+ const uint16_t&
+ verbose () const;
+
+ bool
+ verbose_specified () const;
+
+ const bool&
+ stat () const;
+
+ const std::set<string>&
+ dump () const;
+
+ bool
+ dump_specified () const;
+
+ const bool&
+ progress () const;
+
+ const bool&
+ no_progress () const;
+
+ const size_t&
+ jobs () const;
+
+ bool
+ jobs_specified () const;
+
+ const size_t&
+ max_jobs () const;
+
+ bool
+ max_jobs_specified () const;
+
+ const size_t&
+ queue_depth () const;
+
+ bool
+ queue_depth_specified () const;
+
+ const string&
+ file_cache () const;
+
+ bool
+ file_cache_specified () const;
+
+ const size_t&
+ max_stack () const;
+
+ bool
+ max_stack_specified () const;
+
+ const bool&
+ serial_stop () const;
+
+ const bool&
+ dry_run () const;
+
+ const bool&
+ match_only () const;
+
+ const bool&
+ no_external_modules () const;
+
+ const bool&
+ structured_result () const;
+
+ const bool&
+ mtime_check () const;
+
+ const bool&
+ no_mtime_check () const;
+
+ const bool&
+ no_column () const;
+
+ const bool&
+ no_line () const;
+
+ const path&
+ buildfile () const;
+
+ bool
+ buildfile_specified () const;
+
+ const path&
+ config_guess () const;
+
+ bool
+ config_guess_specified () const;
+
+ const path&
+ config_sub () const;
+
+ bool
+ config_sub_specified () const;
+
+ const string&
+ pager () const;
+
+ bool
+ pager_specified () const;
+
+ const strings&
+ pager_option () const;
+
+ bool
+ pager_option_specified () const;
+
+ const string&
+ options_file () const;
+
+ bool
+ options_file_specified () const;
+
+ const dir_path&
+ default_options () const;
+
+ bool
+ default_options_specified () const;
+
+ const bool&
+ no_default_options () const;
+
+ const bool&
+ help () const;
+
+ const bool&
+ version () const;
+
+ // Print usage information.
+ //
+ static ::build2::build::cli::usage_para
+ print_usage (::std::ostream&,
+ ::build2::build::cli::usage_para = ::build2::build::cli::usage_para::none);
+
+ // Implementation details.
+ //
+ protected:
+ bool
+ _parse (const char*, ::build2::build::cli::scanner&);
+
+ private:
+ bool
+ _parse (::build2::build::cli::scanner&,
+ ::build2::build::cli::unknown_mode option,
+ ::build2::build::cli::unknown_mode argument);
+
+ public:
+ uint64_t build2_metadata_;
+ bool build2_metadata_specified_;
+ bool v_;
+ bool V_;
+ bool quiet_;
+ bool silent_;
+ uint16_t verbose_;
+ bool verbose_specified_;
+ bool stat_;
+ std::set<string> dump_;
+ bool dump_specified_;
+ bool progress_;
+ bool no_progress_;
+ size_t jobs_;
+ bool jobs_specified_;
+ size_t max_jobs_;
+ bool max_jobs_specified_;
+ size_t queue_depth_;
+ bool queue_depth_specified_;
+ string file_cache_;
+ bool file_cache_specified_;
+ size_t max_stack_;
+ bool max_stack_specified_;
+ bool serial_stop_;
+ bool dry_run_;
+ bool match_only_;
+ bool no_external_modules_;
+ bool structured_result_;
+ bool mtime_check_;
+ bool no_mtime_check_;
+ bool no_column_;
+ bool no_line_;
+ path buildfile_;
+ bool buildfile_specified_;
+ path config_guess_;
+ bool config_guess_specified_;
+ path config_sub_;
+ bool config_sub_specified_;
+ string pager_;
+ bool pager_specified_;
+ strings pager_option_;
+ bool pager_option_specified_;
+ string options_file_;
+ bool options_file_specified_;
+ dir_path default_options_;
+ bool default_options_specified_;
+ bool no_default_options_;
+ bool help_;
+ bool version_;
+ };
+}
+
+// Print page usage information.
+//
+namespace build2
+{
+ LIBBUILD2_SYMEXPORT ::build2::build::cli::usage_para
+ print_b_usage (::std::ostream&,
+ ::build2::build::cli::usage_para = ::build2::build::cli::usage_para::none);
+}
+
+#include <libbuild2/b-options.ixx>
+
+// Begin epilogue.
+//
+//
+// End epilogue.
+
+#endif // LIBBUILD2_B_OPTIONS_HXX
diff --git a/libbuild2/b-options.ixx b/libbuild2/b-options.ixx
new file mode 100644
index 0000000..62c8299
--- /dev/null
+++ b/libbuild2/b-options.ixx
@@ -0,0 +1,585 @@
+// -*- C++ -*-
+//
+// This file was generated by CLI, a command line interface
+// compiler for C++.
+//
+
+// Begin prologue.
+//
+//
+// End prologue.
+
+#include <cassert>
+
+namespace build2
+{
+ namespace build
+ {
+ namespace cli
+ {
+ // usage_para
+ //
+ inline usage_para::
+ usage_para (value v)
+ : v_ (v)
+ {
+ }
+
+ // unknown_mode
+ //
+ inline unknown_mode::
+ unknown_mode (value v)
+ : v_ (v)
+ {
+ }
+
+ // exception
+ //
+ inline ::std::ostream&
+ operator<< (::std::ostream& os, const exception& e)
+ {
+ e.print (os);
+ return os;
+ }
+
+ // unknown_option
+ //
+ inline unknown_option::
+ unknown_option (const std::string& option)
+ : option_ (option)
+ {
+ }
+
+ inline const std::string& unknown_option::
+ option () const
+ {
+ return option_;
+ }
+
+ // unknown_argument
+ //
+ inline unknown_argument::
+ unknown_argument (const std::string& argument)
+ : argument_ (argument)
+ {
+ }
+
+ inline const std::string& unknown_argument::
+ argument () const
+ {
+ return argument_;
+ }
+
+ // missing_value
+ //
+ inline missing_value::
+ missing_value (const std::string& option)
+ : option_ (option)
+ {
+ }
+
+ inline const std::string& missing_value::
+ option () const
+ {
+ return option_;
+ }
+
+ // invalid_value
+ //
+ inline invalid_value::
+ invalid_value (const std::string& option,
+ const std::string& value,
+ const std::string& message)
+ : option_ (option),
+ value_ (value),
+ message_ (message)
+ {
+ }
+
+ inline const std::string& invalid_value::
+ option () const
+ {
+ return option_;
+ }
+
+ inline const std::string& invalid_value::
+ value () const
+ {
+ return value_;
+ }
+
+ inline const std::string& invalid_value::
+ message () const
+ {
+ return message_;
+ }
+
+ // file_io_failure
+ //
+ inline file_io_failure::
+ file_io_failure (const std::string& file)
+ : file_ (file)
+ {
+ }
+
+ inline const std::string& file_io_failure::
+ file () const
+ {
+ return file_;
+ }
+
+ // unmatched_quote
+ //
+ inline unmatched_quote::
+ unmatched_quote (const std::string& argument)
+ : argument_ (argument)
+ {
+ }
+
+ inline const std::string& unmatched_quote::
+ argument () const
+ {
+ return argument_;
+ }
+
+ // argv_scanner
+ //
+ inline argv_scanner::
+ argv_scanner (int& argc,
+ char** argv,
+ bool erase,
+ std::size_t sp)
+ : start_position_ (sp + 1),
+ i_ (1),
+ argc_ (argc),
+ argv_ (argv),
+ erase_ (erase)
+ {
+ }
+
+ inline argv_scanner::
+ argv_scanner (int start,
+ int& argc,
+ char** argv,
+ bool erase,
+ std::size_t sp)
+ : start_position_ (sp + static_cast<std::size_t> (start)),
+ i_ (start),
+ argc_ (argc),
+ argv_ (argv),
+ erase_ (erase)
+ {
+ }
+
+ inline int argv_scanner::
+ end () const
+ {
+ return i_;
+ }
+
+ // argv_file_scanner
+ //
+ inline argv_file_scanner::
+ argv_file_scanner (int& argc,
+ char** argv,
+ const std::string& option,
+ bool erase,
+ std::size_t sp)
+ : argv_scanner (argc, argv, erase, sp),
+ option_ (option),
+ options_ (&option_info_),
+ options_count_ (1),
+ i_ (1),
+ skip_ (false)
+ {
+ option_info_.option = option_.c_str ();
+ option_info_.search_func = 0;
+ }
+
+ inline argv_file_scanner::
+ argv_file_scanner (int start,
+ int& argc,
+ char** argv,
+ const std::string& option,
+ bool erase,
+ std::size_t sp)
+ : argv_scanner (start, argc, argv, erase, sp),
+ option_ (option),
+ options_ (&option_info_),
+ options_count_ (1),
+ i_ (1),
+ skip_ (false)
+ {
+ option_info_.option = option_.c_str ();
+ option_info_.search_func = 0;
+ }
+
+ inline argv_file_scanner::
+ argv_file_scanner (const std::string& file,
+ const std::string& option,
+ std::size_t sp)
+ : argv_scanner (0, zero_argc_, 0, sp),
+ option_ (option),
+ options_ (&option_info_),
+ options_count_ (1),
+ i_ (1),
+ skip_ (false)
+ {
+ option_info_.option = option_.c_str ();
+ option_info_.search_func = 0;
+
+ load (file);
+ }
+
+ inline argv_file_scanner::
+ argv_file_scanner (int& argc,
+ char** argv,
+ const option_info* options,
+ std::size_t options_count,
+ bool erase,
+ std::size_t sp)
+ : argv_scanner (argc, argv, erase, sp),
+ options_ (options),
+ options_count_ (options_count),
+ i_ (1),
+ skip_ (false)
+ {
+ }
+
+ inline argv_file_scanner::
+ argv_file_scanner (int start,
+ int& argc,
+ char** argv,
+ const option_info* options,
+ std::size_t options_count,
+ bool erase,
+ std::size_t sp)
+ : argv_scanner (start, argc, argv, erase, sp),
+ options_ (options),
+ options_count_ (options_count),
+ i_ (1),
+ skip_ (false)
+ {
+ }
+
+ inline argv_file_scanner::
+ argv_file_scanner (const std::string& file,
+ const option_info* options,
+ std::size_t options_count,
+ std::size_t sp)
+ : argv_scanner (0, zero_argc_, 0, sp),
+ options_ (options),
+ options_count_ (options_count),
+ i_ (1),
+ skip_ (false)
+ {
+ load (file);
+ }
+ }
+ }
+}
+
+namespace build2
+{
+ // options
+ //
+
+ inline const uint64_t& options::
+ build2_metadata () const
+ {
+ return this->build2_metadata_;
+ }
+
+ inline bool options::
+ build2_metadata_specified () const
+ {
+ return this->build2_metadata_specified_;
+ }
+
+ inline const bool& options::
+ v () const
+ {
+ return this->v_;
+ }
+
+ inline const bool& options::
+ V () const
+ {
+ return this->V_;
+ }
+
+ inline const bool& options::
+ quiet () const
+ {
+ return this->quiet_;
+ }
+
+ inline const bool& options::
+ silent () const
+ {
+ return this->silent_;
+ }
+
+ inline const uint16_t& options::
+ verbose () const
+ {
+ return this->verbose_;
+ }
+
+ inline bool options::
+ verbose_specified () const
+ {
+ return this->verbose_specified_;
+ }
+
+ inline const bool& options::
+ stat () const
+ {
+ return this->stat_;
+ }
+
+ inline const std::set<string>& options::
+ dump () const
+ {
+ return this->dump_;
+ }
+
+ inline bool options::
+ dump_specified () const
+ {
+ return this->dump_specified_;
+ }
+
+ inline const bool& options::
+ progress () const
+ {
+ return this->progress_;
+ }
+
+ inline const bool& options::
+ no_progress () const
+ {
+ return this->no_progress_;
+ }
+
+ inline const size_t& options::
+ jobs () const
+ {
+ return this->jobs_;
+ }
+
+ inline bool options::
+ jobs_specified () const
+ {
+ return this->jobs_specified_;
+ }
+
+ inline const size_t& options::
+ max_jobs () const
+ {
+ return this->max_jobs_;
+ }
+
+ inline bool options::
+ max_jobs_specified () const
+ {
+ return this->max_jobs_specified_;
+ }
+
+ inline const size_t& options::
+ queue_depth () const
+ {
+ return this->queue_depth_;
+ }
+
+ inline bool options::
+ queue_depth_specified () const
+ {
+ return this->queue_depth_specified_;
+ }
+
+ inline const string& options::
+ file_cache () const
+ {
+ return this->file_cache_;
+ }
+
+ inline bool options::
+ file_cache_specified () const
+ {
+ return this->file_cache_specified_;
+ }
+
+ inline const size_t& options::
+ max_stack () const
+ {
+ return this->max_stack_;
+ }
+
+ inline bool options::
+ max_stack_specified () const
+ {
+ return this->max_stack_specified_;
+ }
+
+ inline const bool& options::
+ serial_stop () const
+ {
+ return this->serial_stop_;
+ }
+
+ inline const bool& options::
+ dry_run () const
+ {
+ return this->dry_run_;
+ }
+
+ inline const bool& options::
+ match_only () const
+ {
+ return this->match_only_;
+ }
+
+ inline const bool& options::
+ no_external_modules () const
+ {
+ return this->no_external_modules_;
+ }
+
+ inline const bool& options::
+ structured_result () const
+ {
+ return this->structured_result_;
+ }
+
+ inline const bool& options::
+ mtime_check () const
+ {
+ return this->mtime_check_;
+ }
+
+ inline const bool& options::
+ no_mtime_check () const
+ {
+ return this->no_mtime_check_;
+ }
+
+ inline const bool& options::
+ no_column () const
+ {
+ return this->no_column_;
+ }
+
+ inline const bool& options::
+ no_line () const
+ {
+ return this->no_line_;
+ }
+
+ inline const path& options::
+ buildfile () const
+ {
+ return this->buildfile_;
+ }
+
+ inline bool options::
+ buildfile_specified () const
+ {
+ return this->buildfile_specified_;
+ }
+
+ inline const path& options::
+ config_guess () const
+ {
+ return this->config_guess_;
+ }
+
+ inline bool options::
+ config_guess_specified () const
+ {
+ return this->config_guess_specified_;
+ }
+
+ inline const path& options::
+ config_sub () const
+ {
+ return this->config_sub_;
+ }
+
+ inline bool options::
+ config_sub_specified () const
+ {
+ return this->config_sub_specified_;
+ }
+
+ inline const string& options::
+ pager () const
+ {
+ return this->pager_;
+ }
+
+ inline bool options::
+ pager_specified () const
+ {
+ return this->pager_specified_;
+ }
+
+ inline const strings& options::
+ pager_option () const
+ {
+ return this->pager_option_;
+ }
+
+ inline bool options::
+ pager_option_specified () const
+ {
+ return this->pager_option_specified_;
+ }
+
+ inline const string& options::
+ options_file () const
+ {
+ return this->options_file_;
+ }
+
+ inline bool options::
+ options_file_specified () const
+ {
+ return this->options_file_specified_;
+ }
+
+ inline const dir_path& options::
+ default_options () const
+ {
+ return this->default_options_;
+ }
+
+ inline bool options::
+ default_options_specified () const
+ {
+ return this->default_options_specified_;
+ }
+
+ inline const bool& options::
+ no_default_options () const
+ {
+ return this->no_default_options_;
+ }
+
+ inline const bool& options::
+ help () const
+ {
+ return this->help_;
+ }
+
+ inline const bool& options::
+ version () const
+ {
+ return this->version_;
+ }
+}
+
+// Begin epilogue.
+//
+//
+// End epilogue.
diff --git a/libbuild2/b.cli b/libbuild2/b.cli
new file mode 100644
index 0000000..112db2b
--- /dev/null
+++ b/libbuild2/b.cli
@@ -0,0 +1,751 @@
+// file : build2/b.cli
+// license : MIT; see accompanying LICENSE file
+
+include <set>;
+include <libbuild2/types.hxx>;
+
+"\section=1"
+"\name=b"
+"\summary=build system driver"
+
+namespace build2
+{
+ {
+ "<options>
+ <variables>
+ <buildspec> <meta-operation> <operation> <target> <parameters>",
+
+ "\h|SYNOPSIS|
+
+ \c{\b{b --help}\n
+ \b{b --version}\n
+ \b{b} [<options>] [<variables>] [<buildspec>]}
+
+ \c{<buildspec> = <meta-operation>\b{(}<operation>\b{(}<target>...[\b{,}<parameters>]\b{)}...\b{)}...}
+
+ \h|DESCRIPTION|
+
+ The \cb{build2} build system driver executes a set of meta-operations on
+ operations on targets according to the build specification, or
+ \i{buildspec} for short. This process can be controlled by specifying
+ driver <options> and build system <variables>.
+
+ Note that <options>, <variables>, and <buildspec> fragments can be
+ specified in any order. To avoid treating an argument that starts with
+ \cb{'-'} as an option, add the \cb{'--'} separator. To avoid treating an
+ argument that contains \cb{'='} as a variable, add the second \cb{'--'}
+ separator."
+ }
+
+ // For usage it's nice to see the list of options on the first page. So
+ // let's not put this "extended" description into usage.
+ //
+ {
+ "<meta-operation> <operation> <target> <parameters> <src-base>",
+ "",
+
+ "All components in the buildspec can be omitted. If <meta-operation> is
+ omitted, then it defaults to \cb{perform}. If <operation> is omitted,
+ then it defaults to the default operation for this meta-operation. For
+ \cb{perform} it is \cb{update}. Finally, if <target> is omitted, then it
+ defaults to the current working directory. A meta-operation on operation
+ is called an \i{action}. Some operations and meta-operations may take
+ additional <parameters>. For example:
+
+ \
+ $ b # perform(update(./))
+ $ b foo/ # perform(update(foo/))
+ $ b foo/ bar/ # perform(update(foo/ bar/))
+ $ b update # perform(update(./))
+ $ b 'clean(../)' # perform(clean(../))
+ $ b perform # perform(update(./))
+ $ b configure # configure(?(./))
+ $ b 'configure(../)' # configure(?(../))
+ $ b clean update # perform(clean(./) update(./))
+ $ b configure update # configure(?(./)) perform(update(./))
+ $ b 'create(conf/, cxx)' # create(?(conf/), cxx)
+ \
+
+ Notice the question mark used to show the (imaginary) default operation
+ for the \cb{configure} meta-operation. For \cb{configure} the default
+ operation is \"all operations\". That is, it will configure all the
+ operations for the specified target.
+
+ You can also \"generate\" multiple operations for the same set of targets.
+ Compare:
+
+ \
+ $ b 'clean(foo/ bar/)' 'update(foo/ bar/)'
+ $ b '{clean update}(foo/ bar/)'
+ \
+
+ Some more useful buildspec examples:
+
+ \
+ $ b '{clean update}(...)' # rebuild
+ $ b '{clean update clean}(...)' # make sure builds
+ $ b '{clean test clean}(...)' # make sure passes tests
+ $ b '{clean disfigure}(...)' # similar to distclean
+ \
+
+ In POSIX shells parenthesis are special characters and must be quoted
+ when used in a buildspec. Besides being an inconvenience in itself,
+ quoting also inhibits path auto-completion. To help with this situation a
+ shortcut syntax is available for executing a single operation or
+ meta-operation, for example:
+
+ \
+ $ b clean: foo/ bar/ # clean(foo/ bar/)
+ $ b configure: src/@out/ # configure(src/@out/)
+ $ b create: conf/, cxx # create(conf/, cxx)
+ $ b configure: config.cxx=g++ src/ # configure(src/) config.cxx=g++
+ \
+
+ To activate the shortcut syntax the first buildspec argument must start
+ with an operation or meta-operation name and end with a colon (\cb{:}).
+ To transform the shortcut syntax to the normal buildspec syntax the colon
+ is replaced with the opening parenthesis ('\cb{(}'), the rest of the
+ buildspec arguments are treated as is, and the final closing parenthesis
+ ('\cb{)}') is added.
+
+ For each <target> the driver expects to find \cb{buildfile} either in the
+ target's directory or, if the directory is part of the \cb{out} tree
+ (\cb{out_base}), in the corresponding \cb{src} directory (\cb{src_base}).
+
+ For example, assuming \cb{foo/} is the source directory of a project:
+
+ \
+ $ b foo/ # out_base=src_base=foo/
+ $ b foo-out/ # out_base=foo-out/ src_base=foo/
+ $ b foo-out/exe{foo} # out_base=foo-out/ src_base=foo/
+ \
+
+ An exception to this requirement is a directory target in which case,
+ provided the directory has subdirectories, an \i{implied} \cb{buildfile}
+ with the following content is assumed:
+
+ \
+ # Implied directory buildfile: build all subdirectories.
+ #
+ ./: */
+ \
+
+ In the above example, we assumed that the build system driver was able to
+ determine the association between \cb{out_base} and \cb{src_base}. In
+ case \cb{src_base} and \cb{out_base} are not the same directory, this is
+ achieved in one of two ways: the \cb{config} module (which implements the
+ \cb{configure}, \cb{disfigure}, and \cb{create} meta-operations) saves
+ this association as part of the configuration process. If, however, the
+ association hasn't been saved, then we have to specify \cb{src_base}
+ explicitly using the following extended <target> syntax:
+
+ \c{<src-base>/@<target>}
+
+ Continuing with the previous example:
+
+ \
+ $ b foo/@foo-out/exe{foo} # out_base=foo-out/ src_base=foo/
+ \
+
+ Normally, you would need to specify \cb{src_base} explicitly only once,
+ during configuration. For example, a typical usage would be:
+
+ \
+ $ b configure: foo/@foo-out/ # src_base is saved
+ $ b foo-out/ # no need to specify src_base
+ $ b clean: foo-out/exe{foo} # no need to specify src_base
+ \
+
+ Besides in and out of source builds, \cb{build2} also supports
+ configuring a project's source directory as \i{forwarded} to an out of
+ source build. With such a forwarded configuration in place, if we run the
+ build system driver from the source directory, it will automatically
+ build in the output directory and \i{backlink} (using symlinks or another
+ suitable mechanism) certain \"interesting\" targets (executables,
+ documentation, etc) to the source directory for easy access. Continuing
+ with the previous example:
+
+ \
+ $ b configure: foo/@foo-out/,forward # foo/ forwarded to foo-out/
+ $ cd foo/
+ $ b # build in foo-out/
+ $ ./foo # symlink to foo-out/foo
+ \
+
+ The ability to specify \cb{build2} variables as part of the command line
+ is normally used to pass configuration values, for example:
+
+ \
+ $ b config.cxx=clang++ config.cxx.coptions=-O3
+ \
+
+ Similar to buildspec, POSIX shells often inhibit path auto-completion on
+ the right hand side of a variable assignment. To help with this situation
+ the assignment can be broken down into three separate command line
+ arguments, for example:
+
+ \
+ $ b config.import.libhello = ../libhello/
+ \
+
+ The build system has the following built-in and pre-defined
+ meta-operations:
+
+ \dl|
+
+ \li|\cb{perform}
+
+ Perform an operation.|
+
+ \li|\cb{configure}
+
+ Configure all operations supported by a project and save the result
+ in the project's \cb{build/config.build} file. Implemented by the
+ \cb{config} module. For example:
+
+ \
+ $ b configure \
+ config.cxx=clang++ \
+ config.cxx.coptions=-O3 \
+ config.install.root=/usr/local \
+ config.install.root.sudo=sudo
+ \
+
+ Use the \cb{forward} parameter to instead configure a source
+ directory as forwarded to an out of source build. For example:
+
+ \
+ $ b configure: src/@out/,forward
+ \
+
+ |
+
+ \li|\cb{disfigure}
+
+ Disfigure all operations supported by a project and remove the
+ project's \cb{build/config.build} file. Implemented by the
+ \cb{config} module.
+
+ Use the \cb{forward} parameter to instead disfigure forwarding of a
+ source directory to an out of source build. For example:
+
+ \
+ $ b disfigure: src/,forward
+ \
+
+ |
+
+ \li|\cb{create}
+
+ Create and configure a \i{configuration} project. Implemented by the
+ \cb{config} module.
+
+ Normally a \cb{build2} project is created manually by writing the
+ \cb{bootstrap.build} and \cb{config.build} files, adding source
+ files, and so on. However, a special kind of project, which we call
+ \i{configuration}, is often useful. Such a project doesn't have any
+ source files of its own. Instead, it serves as an amalgamation for
+ building other projects as part of it. Doing it this way has two
+ major benefits: sub-projects automatically resolve their imports
+ to other projects in the amalgamation and sub-projects inherits their
+ configuration from the amalgamation (which means if we want to change
+ something, we only need to do it in one place).
+
+ As an example, let's assume we have two C++ projects: the
+ \cb{libhello} library in \cb{libhello/} and the \cb{hello} executable
+ that imports it in \cb{hello/}. And we want to build \cb{hello} with
+ \cb{clang++}.
+
+ One way to do it would be to configure and build each project in its
+ own directory, for example:
+
+ \
+ $ b configure: libhello/@libhello-clang/ config.cxx=clang++
+ $ b configure: hello/@hello-clang/ config.cxx=clang++ \
+ config.import.libhello=libhello-clang/
+ \
+
+ The two drawbacks, as mentioned above, are the need to explicitly
+ resolve the import and having to make changes in multiple places
+ should, for example, we want to switch from \cb{clang++} to \cb{g++}.
+
+ We can, however, achieve the same end result but without any of the
+ drawbacks using the configuration project:
+
+ \
+ $ b create: clang/,cxx config.cxx=clang++ # Creates clang/.
+ $ b configure: libhello/@clang/libhello/
+ $ b configure: hello/@clang/hello/
+ \
+
+ The targets passed to the \cb{create} meta-operation must be
+ directories which should either not exist or be empty. For each
+ such directory \cb{create} first initializes a project as described
+ below and then configures it by executing the \cb{configure}
+ meta-operation.
+
+ The first optional parameter to \cb{create} is the list of modules to
+ load in \cb{root.build}. By default, \cb{create} appends \cb{.config}
+ to the names of these modules so that only their configurations are
+ loaded. You can override this behavior by specifying the period
+ (\cb{.}) after the module name. You can also instruct \cb{create} to
+ use the optional module load by prefixing the module name with the
+ question mark (\cb{?}).
+
+ The second optional parameter is the list of modules to load in
+ \cb{bootstrap.build}. If not specified, then the \cb{test},
+ \cb{dist}, and \cb{install} modules are loaded by default. The
+ \cb{config} module is always loaded first.
+
+ Besides creating project's \cb{bootstrap.build} and \cb{root.build},
+ \cb{create} also writes the root \cb{buildfile} with the following
+ contents:
+
+ \
+ ./: {*/ -build/}
+ \
+
+ If used, this \cb{buildfile} will build all the sub-projects
+ currently present in the configuration.|
+
+ \li|\cb{dist}
+
+ Prepare a distribution containing all files necessary to perform all
+ operations in a project. Implemented by the \cb{dist} module.|
+
+ \li|\cb{info}
+
+ Print basic information (name, version, source and output
+ directories, etc) about one or more projects to \cb{STDOUT},
+ separating multiple projects with a blank line. Each project is
+ identified by its root directory target. For example:
+
+ \
+ $ b info: libfoo/ libbar/
+ \
+
+ ||
+
+ The build system has the following built-in and pre-defined operations:
+
+ \dl|
+
+ \li|\cb{update}
+
+ Update a target.|
+
+ \li|\cb{clean}
+
+ Clean a target.|
+
+ \li|\cb{test}
+
+ Test a target. Performs \cb{update} as a pre-operation. Implemented by
+ the \cb{test} module.|
+
+ \li|\cb{update-for-test}
+
+ Update a target for testing. This operation is equivalent to the
+ \cb{update} pre-operation as executed by the \cb{test} operation and
+ can be used to only update what is necessary for testing. Implemented
+ by the \cb{test} module.|
+
+ \li|\cb{install}
+
+ Install a target. Performs \cb{update} as a pre-operation. Implemented
+ by the \cb{install} module.|
+
+
+ \li|\cb{uninstall}
+
+ Uninstall a target. Performs \cb{update} as a pre-operation.
+ Implemented by the \cb{install} module.|
+
+ \li|\cb{update-for-install}
+
+ Update a target for installation. This operation is equivalent to the
+ \cb{update} pre-operation as executed by the \cb{install} operation
+ and can be used to only update what is necessary for
+ installation. Implemented by the \cb{install} module.||
+
+ Note that buildspec and command line variable values are treated as
+ \cb{buildfile} fragments and so can use quoting and escaping as well as
+ contain variable expansions and evaluation contexts. However, to be more
+ usable on various platforms, escaping in these two situations is limited
+ to the \i{effective sequences} of \cb{\\'}, \cb{\\\"}, \cb{\\\\},
+ \cb{\\$}, and \cb{\\(} with all other sequences interpreted as is.
+ Together with double-quoting this is sufficient to represent any value.
+ For example:
+
+ \
+ $ b config.install.root=c:\projects\install
+ $ b \"config.install.root='c:\Program Files (x86)\test\'\"
+ $ b 'config.cxx.poptions=-DFOO_STR=\"foo\"'
+ \
+ "
+ }
+
+ class options
+ {
+ "\h#options|OPTIONS|"
+
+ uint64_t --build2-metadata; // Leave undocumented/hidden.
+
+ bool -v
+ {
+ "Print actual commands being executed. This options is equivalent to
+ \cb{--verbose 2}."
+ }
+
+ bool -V
+ {
+ "Print all underlying commands being executed. This options is
+ equivalent to \cb{--verbose 3}."
+ }
+
+ bool --quiet|-q
+ {
+ "Run quietly, only printing error messages in most contexts. In certain
+ contexts (for example, while updating build system modules) this
+ verbosity level may be ignored. Use \cb{--silent} to run quietly in all
+ contexts. This option is equivalent to \cb{--verbose 0}."
+ }
+
+ bool --silent
+ {
+ "Run quietly, only printing error messages in all contexts."
+ }
+
+ uint16_t --verbose = 1
+ {
+ "<level>",
+ "Set the diagnostics verbosity to <level> between 0 and 6. Level 0
+ disables any non-error messages (but see the difference between
+ \cb{--quiet} and \cb{--silent}) while level 6 produces lots of
+ information, with level 1 being the default. The following additional
+ types of diagnostics are produced at each level:
+
+ \ol|
+
+ \li|High-level information messages.|
+
+ \li|Essential underlying commands being executed.|
+
+ \li|All underlying commands being executed.|
+
+ \li|Information that could be helpful to the user.|
+
+ \li|Information that could be helpful to the developer.|
+
+ \li|Even more detailed information.||"
+ }
+
+ bool --stat
+ {
+ "Display build statistics."
+ }
+
+ std::set<string> --dump
+ {
+ "<phase>",
+ "Dump the build system state after the specified phase. Valid <phase>
+ values are \cb{load} (after loading \cb{buildfiles}) and \cb{match}
+ (after matching rules to targets). Repeat this option to dump the
+ state after multiple phases."
+ }
+
+ bool --progress
+ {
+ "Display build progress. If printing to a terminal the progress is
+ displayed by default for low verbosity levels. Use \cb{--no-progress}
+ to suppress."
+ }
+
+ bool --no-progress
+ {
+ "Don't display build progress."
+ }
+
+ size_t --jobs|-j
+ {
+ "<num>",
+ "Number of active jobs to perform in parallel. This includes both the
+ number of active threads inside the build system as well as the number
+ of external commands (compilers, linkers, etc) started but not yet
+ finished. If this option is not specified or specified with the \cb{0}
+ value, then the number of available hardware threads is used."
+ }
+
+ size_t --max-jobs|-J
+ {
+ "<num>",
+ "Maximum number of jobs (threads) to create. The default is 8x the
+ number of active jobs (\cb{--jobs|j}) on 32-bit architectures and 32x
+ on 64-bit. See the build system scheduler implementation for details."
+ }
+
+ size_t --queue-depth|-Q = 4
+ {
+ "<num>",
+ "The queue depth as a multiplier over the number of active jobs.
+ Normally we want a deeper queue if the jobs take long (for example,
+ compilation) and shorter if they are quick (for example, simple tests).
+ The default is 4. See the build system scheduler implementation for
+ details."
+ }
+
+ string --file-cache
+ {
+ "<impl>",
+ "File cache implementation to use for intermediate build results. Valid
+ values are \cb{noop} (no caching or compression) and \cb{sync-lz4} (no
+ caching with synchronous LZ4 on-disk compression). If this option is
+ not specified, then a suitable default implementation is used
+ (currently \cb{sync-lz4})."
+ }
+
+ size_t --max-stack
+ {
+ "<num>",
+ "The maximum stack size in KBytes to allow for newly created threads.
+ For \i{pthreads}-based systems the driver queries the stack size of
+ the main thread and uses the same size for creating additional threads.
+ This allows adjusting the stack size using familiar mechanisms, such
+ as \cb{ulimit}. Sometimes, however, the stack size of the main thread
+ is excessively large. As a result, the driver checks if it is greater
+ than a predefined limit (64MB on 64-bit systems and 32MB on 32-bit
+ ones) and caps it to a more sensible value (8MB) if that's the case.
+ This option allows you to override this check with the special zero
+ value indicating that the main thread stack size should be used as is."
+ }
+
+ bool --serial-stop|-s
+ {
+ "Run serially and stop at the first error. This mode is useful to
+ investigate build failures that are caused by build system errors
+ rather than compilation errors. Note that if you don't want to keep
+ going but still want parallel execution, add \cb{--jobs|-j} (for
+ example \cb{-j\ 0} for default concurrency)."
+ }
+
+ bool --dry-run|-n
+ {
+ "Print commands without actually executing them. Note that commands
+ that are required to create an accurate build state will still be
+ executed and the extracted auxiliary dependency information saved. In
+ other words, this is not the \i{\"don't touch the filesystem\"} mode
+ but rather \i{\"do minimum amount of work to show what needs to be
+ done\"}. Note also that only the \cb{perform} meta-operation supports
+ this mode."
+ }
+
+ bool --match-only
+ {
+ "Match the rules but do not execute the operation. This mode is primarily
+ useful for profiling."
+ }
+
+ bool --no-external-modules
+ {
+ "Don't load external modules during project bootstrap. Note that this
+ option can only be used with meta-operations that do not load the
+ project's \cb{buildfiles}, such as \cb{info}."
+ }
+
+ bool --structured-result
+ {
+ "Write the result of execution in a structured form. In this mode,
+ instead of printing to \cb{STDERR} diagnostics messages about the
+ outcome of executing actions on targets, the driver writes to
+ \cb{STDOUT} a structured result description one line per the
+ buildspec action/target pair. Each line has the following format:
+
+ \c{\i{state} \i{meta-operation} \i{operation} \i{target}}
+
+ Where \ci{state} can be one of \cb{unchanged}, \cb{changed}, or
+ \cb{failed}. If the action is a pre or post operation, then the
+ outer operation is specified in parenthesis. For example:
+
+ \
+ unchanged perform update(test) /tmp/dir{hello/}
+ changed perform test /tmp/dir{hello/}
+ \
+
+ Note that only the \cb{perform} meta-operation supports the structured
+ result output.
+ "
+ }
+
+ bool --mtime-check
+ {
+ "Perform file modification time sanity checks. These checks can be
+ helpful in diagnosing spurious rebuilds and are enabled by default
+ on Windows (which is known not to guarantee monotonically increasing
+ mtimes) and for the staged version of the build system on other
+ platforms. Use \cb{--no-mtime-check} to disable."
+ }
+
+ bool --no-mtime-check
+ {
+ "Don't perform file modification time sanity checks. See
+ \cb{--mtime-check} for details."
+ }
+
+ bool --no-column
+ {
+ "Don't print column numbers in diagnostics."
+ }
+
+ bool --no-line
+ {
+ "Don't print line and column numbers in diagnostics."
+ }
+
+ path --buildfile
+ {
+ "<path>",
+ "The alternative file to read build information from. The default is
+ \cb{buildfile} or \cb{build2file}, depending on the project's build
+ file/directory naming scheme. If <path> is '\cb{-}', then read from
+ \cb{STDIN}. Note that this option only affects the files read as part
+ of the buildspec processing. Specifically, it has no effect on the
+ \cb{source} and \cb{include} directives. As a result, this option is
+ primarily intended for testing rather than changing the build file
+ names in real projects."
+ }
+
+ path --config-guess
+ {
+ "<path>",
+ "The path to the \cb{config.guess(1)} script that should be used to
+ guess the host machine triplet. If this option is not specified, then
+ \cb{b} will fall back on to using the target it was built for as host."
+ }
+
+ path --config-sub
+ {
+ "<path>",
+ "The path to the \cb{config.sub(1)} script that should be used to
+ canonicalize machine triplets. If this option is not specified, then
+ \cb{b} will use its built-in canonicalization support which should
+ be sufficient for commonly-used platforms."
+ }
+
+ string --pager // String to allow empty value.
+ {
+ "<path>",
+ "The pager program to be used to show long text. Commonly used pager
+ programs are \cb{less} and \cb{more}. You can also specify additional
+ options that should be passed to the pager program with
+ \cb{--pager-option}. If an empty string is specified as the pager
+ program, then no pager will be used. If the pager program is not
+ explicitly specified, then \cb{b} will try to use \cb{less}. If it
+ is not available, then no pager will be used."
+ }
+
+ strings --pager-option
+ {
+ "<opt>",
+ "Additional option to be passed to the pager program. See \cb{--pager}
+ for more information on the pager program. Repeat this option to
+ specify multiple pager options."
+ }
+
+ // The following option is "fake" in that it is actually handled by
+ // argv_file_scanner. We have it here for documentation.
+ //
+ string --options-file
+ {
+ "<file>",
+ "Read additional options from <file>. Each option should appear on a
+ separate line optionally followed by space or equal sign (\cb{=}) and
+ an option value. Empty lines and lines starting with \cb{#} are
+ ignored. Option values can be enclosed in double (\cb{\"}) or single
+ (\cb{'}) quotes to preserve leading and trailing whitespaces as well as
+ to specify empty values. If the value itself contains trailing or
+ leading quotes, enclose it with an extra pair of quotes, for example
+ \cb{'\"x\"'}. Non-leading and non-trailing quotes are interpreted as
+ being part of the option value.
+
+ The semantics of providing options in a file is equivalent to providing
+ the same set of options in the same order on the command line at the
+ point where the \cb{--options-file} option is specified except that
+ the shell escaping and quoting is not required. Repeat this option
+ to specify more than one options file."
+ }
+
+ dir_path --default-options
+ {
+ "<dir>",
+ "The directory to load additional default options files from."
+ }
+
+ bool --no-default-options
+ {
+ "Don't load default options files."
+ }
+
+ bool --help {"Print usage information and exit."}
+ bool --version {"Print version and exit."}
+ };
+
+ "
+ \h|DEFAULT OPTIONS FILES|
+
+ Instead of having a separate config file format for tool configuration, the
+ \cb{build2} toolchain uses \i{default options files} which contain the same
+ options as what can be specified on the command line. The default options
+ files are like options files that one can specify with \cb{--options-file}
+ except that they are loaded by default.
+
+ The default options files for the build system driver are called
+ \cb{b.options} and are searched for in the \cb{.build2/} subdirectory of the
+ home directory and in the system directory (for example, \cb{/etc/build2/})
+ if configured. Note that besides options these files can also contain global
+ variable overrides.
+
+ Once the search is complete, the files are loaded in the reverse order, that
+ is, beginning from the system directory (if any), followed by the home
+ directory, and finishing off with the options specified on the command line.
+ In other words, the files are loaded from the more generic to the more
+ specific with the command line options having the ability to override any
+ values specified in the default options files.
+
+ If a default options file contains \cb{--no-default-options}, then the
+ search is stopped at the directory containing this file and no outer files
+ are loaded. If this option is specified on the command line, then none of
+ the default options files are searched for or loaded.
+
+ An additional directory containing default options files can be specified
+ with \cb{--default-options}. Its configuration files are loaded after the
+ home directory.
+
+ The order in which default options files are loaded is traced at the
+ verbosity level 3 (\cb{-V} option) or higher.
+
+ \h|EXIT STATUS|
+
+ Non-zero exit status is returned in case of an error.
+ "
+
+ // NOTE: remember to update --build2-metadata output if adding any relevant
+ // new environment variables.
+ //
+ "
+ \h|ENVIRONMENT|
+
+ The \cb{HOME} environment variable is used to determine the user's home
+ directory. If it is not set, then \cb{getpwuid(3)} is used instead. This
+ value is used to shorten paths printed in diagnostics by replacing the home
+ directory with \cb{~/}. It is also made available to \cb{buildfile}'s as the
+ \cb{build.home} variable.
+
+ The \cb{BUILD2_VAR_OVR} environment variable is used to propagate global
+ variable overrides to nested build system driver invocations. Its value is a
+ list of global variable assignments separated with newlines.
+
+ The \cb{BUILD2_DEF_OPT} environment variable is used to suppress loading of
+ default options files in nested build system driver invocations. Its values
+ are \cb{false} or \cb{0} to suppress and \cb{true} or \cb{1} to load.
+ "
+}
diff --git a/libbuild2/buildfile b/libbuild2/buildfile
index ee320e4..74d7485 100644
--- a/libbuild2/buildfile
+++ b/libbuild2/buildfile
@@ -25,8 +25,13 @@ include $bundled_modules
#
intf_libs = $libbutl
-lib{build2}: libul{build2}: \
- {hxx ixx txx cxx}{* -utility-*installed -config -version -*.test...} \
+lib{build2}: libul{build2}: \
+ {hxx ixx txx cxx}{* -utility-*installed \
+ -b-options \
+ -config \
+ -version \
+ -*.test...} \
+ {hxx ixx cxx}{b-options} \
{hxx}{config version}
libul{build2}: script/{hxx ixx txx cxx}{** -*-options -**.test...} \
@@ -227,19 +232,16 @@ else
if $cli.configured
{
cli.options += --std c++11 -I $src_root --include-with-brackets \
---generate-vector-scanner --generate-modifier --generate-specifier \
---suppress-usage
+--generate-specifier
cli.cxx{*}:
{
# Include the generated cli files into the distribution and don't remove
# them when cleaning in src (so that clean results in a state identical
- # to distributed). But don't install their headers since they are only
- # used internally in the testscript implementation.
+ # to distributed).
#
dist = true
clean = ($src_root != $out_root)
- install = false
# We keep the generated code in the repository so copy it back to src in
# case of a forwarded configuration.
@@ -247,10 +249,31 @@ if $cli.configured
backlink = overwrite
}
+ cli.cxx{b-options}: cli{b}
+ {
+ cli.options += --cli-namespace build2::build::cli \
+--include-prefix libbuild2 --guard-prefix LIBBUILD2 \
+--export-symbol LIBBUILD2_SYMEXPORT \
+--hxx-prologue '#include <libbuild2/export.hxx>' \
+--cxx-prologue "#include <libbuild2/types-parsers.hxx>" \
+--generate-file-scanner --keep-separator --generate-parse --generate-merge
+
+ # Usage options.
+ #
+ cli.options += --suppress-undocumented --long-usage --ansi-color \
+--ascii-tree --page-usage 'build2::print_$name$_' --option-length 21
+ }
+
script/cli.cxx{builtin-options}: script/cli{builtin}
{
cli.options += --cli-namespace build2::script::cli \
---include-prefix libbuild2/script --guard-prefix LIBBUILD2_SCRIPT
+--include-prefix libbuild2/script --guard-prefix LIBBUILD2_SCRIPT \
+--generate-vector-scanner --generate-modifier --suppress-usage
+
+ # Don't install the generated cli headers since they are only used
+ # internally in the script implementation.
+ #
+ install = false
}
build/script/cli.cxx{builtin-options}: build/script/cli{builtin}
@@ -258,7 +281,12 @@ if $cli.configured
cli.options += --cli-namespace build2::build::script::cli \
--include-prefix libbuild2/build/script --guard-prefix LIBBUILD2_BUILD_SCRIPT \
--cxx-prologue "#include <libbuild2/build/script/types-parsers.hxx>" \
---generate-parse
+--generate-parse --generate-vector-scanner --generate-modifier --suppress-usage
+
+ # Don't install the generated cli headers since they are only used
+ # internally in the buildscript implementation.
+ #
+ install = false
}
}
else
diff --git a/libbuild2/cmdline.cxx b/libbuild2/cmdline.cxx
new file mode 100644
index 0000000..a5f9616
--- /dev/null
+++ b/libbuild2/cmdline.cxx
@@ -0,0 +1,408 @@
+// file : libbuild2/cmdline.cxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+#include <libbuild2/cmdline.hxx>
+
+#include <limits>
+#include <cstring> // strcmp(), strchr()
+
+#include <libbutl/default-options.hxx>
+
+#include <libbuild2/b-options.hxx>
+#include <libbuild2/diagnostics.hxx>
+
+using namespace std;
+using namespace butl;
+
+namespace cli = build2::build::cli;
+
+namespace build2
+{
+ cmdline
+ parse_cmdline (tracer& trace, int argc, char* argv[], options& ops)
+ {
+ // Note that the diagnostics verbosity level can only be calculated after
+ // default options are loaded and merged (see below). Thus, until then we
+ // refer to the verbosity level specified on the command line.
+ //
+ auto verbosity = [&ops] ()
+ {
+ uint16_t v (
+ ops.verbose_specified ()
+ ? ops.verbose ()
+ : ops.V () ? 3 : ops.v () ? 2 : ops.quiet () || ops.silent () ? 0 : 1);
+ return v;
+ };
+
+ cmdline r;
+
+ // We want to be able to specify options, vars, and buildspecs in any
+ // order (it is really handy to just add -v at the end of the command
+ // line).
+ //
+ try
+ {
+ // Command line arguments starting position.
+ //
+ // We want the positions of the command line arguments to be after the
+ // default options files. Normally that would be achieved by passing the
+ // last position of the previous scanner to the next. The problem is
+ // that we parse the command line arguments first (for good reasons).
+ // Also the default options files parsing machinery needs the maximum
+ // number of arguments to be specified and assigns the positions below
+ // this value (see load_default_options() for details). So we are going
+ // to "reserve" the first half of the size_t value range for the default
+ // options positions and the second half for the command line arguments
+ // positions.
+ //
+ size_t args_pos (numeric_limits<size_t>::max () / 2);
+ cli::argv_file_scanner scan (argc, argv, "--options-file", args_pos);
+
+ size_t argn (0); // Argument count.
+ bool shortcut (false); // True if the shortcut syntax is used.
+
+ for (bool opt (true), var (true); scan.more (); )
+ {
+ if (opt)
+ {
+ // Parse the next chunk of options until we reach an argument (or
+ // eos).
+ //
+ if (ops.parse (scan) && !scan.more ())
+ break;
+
+ // If we see first "--", then we are done parsing options.
+ //
+ if (strcmp (scan.peek (), "--") == 0)
+ {
+ scan.next ();
+ opt = false;
+ continue;
+ }
+
+ // Fall through.
+ }
+
+ const char* s (scan.next ());
+
+ // See if this is a command line variable. What if someone needs to
+ // pass a buildspec that contains '='? One way to support this would
+ // be to quote such a buildspec (e.g., "'/tmp/foo=bar/'"). Or invent
+ // another separator. Or use a second "--". Actually, let's just do
+ // the second "--".
+ //
+ if (var)
+ {
+ // If we see second "--", then we are also done parsing variables.
+ //
+ if (strcmp (s, "--") == 0)
+ {
+ var = false;
+ continue;
+ }
+
+ if (const char* p = strchr (s, '=')) // Covers =, +=, and =+.
+ {
+ // Diagnose the empty variable name situation. Note that we don't
+ // allow "partially broken down" assignments (as in foo =bar)
+ // since foo= bar would be ambigous.
+ //
+ if (p == s || (p == s + 1 && *s == '+'))
+ fail << "missing variable name in '" << s << "'";
+
+ r.cmd_vars.push_back (s);
+ continue;
+ }
+
+ // Handle the "broken down" variable assignments (i.e., foo = bar
+ // instead of foo=bar).
+ //
+ if (scan.more ())
+ {
+ const char* a (scan.peek ());
+
+ if (strcmp (a, "=" ) == 0 ||
+ strcmp (a, "+=") == 0 ||
+ strcmp (a, "=+") == 0)
+ {
+ string v (s);
+ v += a;
+
+ scan.next ();
+
+ if (scan.more ())
+ v += scan.next ();
+
+ r.cmd_vars.push_back (move (v));
+ continue;
+ }
+ }
+
+ // Fall through.
+ }
+
+ // Merge all the individual buildspec arguments into a single string.
+ // We use newlines to separate arguments so that line numbers in
+ // diagnostics signify argument numbers. Clever, huh?
+ //
+ if (argn != 0)
+ r.buildspec += '\n';
+
+ r.buildspec += s;
+
+ // See if we are using the shortcut syntax.
+ //
+ if (argn == 0 && r.buildspec.back () == ':')
+ {
+ r.buildspec.back () = '(';
+ shortcut = true;
+ }
+
+ argn++;
+ }
+
+ // Add the closing parenthesis unless there wasn't anything in between
+ // in which case pop the opening one.
+ //
+ if (shortcut)
+ {
+ if (argn == 1)
+ r.buildspec.pop_back ();
+ else
+ r.buildspec += ')';
+ }
+
+ // Get/set an environment variable tracing the operation.
+ //
+ auto get_env = [&verbosity, &trace] (const char* nm)
+ {
+ optional<string> r (getenv (nm));
+
+ if (verbosity () >= 5)
+ {
+ if (r)
+ trace << nm << ": '" << *r << "'";
+ else
+ trace << nm << ": <NULL>";
+ }
+
+ return r;
+ };
+
+ auto set_env = [&verbosity, &trace] (const char* nm, const string& vl)
+ {
+ try
+ {
+ if (verbosity () >= 5)
+ trace << "setting " << nm << "='" << vl << "'";
+
+ setenv (nm, vl);
+ }
+ catch (const system_error& e)
+ {
+ // The variable value can potentially be long/multi-line, so let's
+ // print it last.
+ //
+ fail << "unable to set environment variable " << nm << ": " << e <<
+ info << "value: '" << vl << "'";
+ }
+ };
+
+ // If the BUILD2_VAR_OVR environment variable is present, then parse its
+ // value as a newline-separated global variable overrides and prepend
+ // them to the overrides specified on the command line.
+ //
+ // Note that this means global overrides may not contain a newline.
+
+ // Verify that the string is a valid global override. Uses the file name
+ // and the options flag for diagnostics only.
+ //
+ auto verify_glb_ovr = [] (const string& v, const path_name& fn, bool opt)
+ {
+ size_t p (v.find ('=', 1));
+ if (p == string::npos || v[0] != '!')
+ {
+ diag_record dr (fail (fn));
+ dr << "expected " << (opt ? "option or " : "") << "global "
+ << "variable override instead of '" << v << "'";
+
+ if (p != string::npos)
+ dr << info << "prefix variable assignment with '!'";
+ }
+
+ if (p == 1 || (p == 2 && v[1] == '+')) // '!=' or '!+=' ?
+ fail (fn) << "missing variable name in '" << v << "'";
+ };
+
+ optional<string> env_ovr (get_env ("BUILD2_VAR_OVR"));
+ if (env_ovr)
+ {
+ path_name fn ("<BUILD2_VAR_OVR>");
+
+ auto i (r.cmd_vars.begin ());
+ for (size_t b (0), e (0); next_word (*env_ovr, b, e, '\n', '\r'); )
+ {
+ // Extract the override from the current line, stripping the leading
+ // and trailing spaces.
+ //
+ string s (*env_ovr, b, e - b);
+ trim (s);
+
+ // Verify and save the override, unless the line is empty.
+ //
+ if (!s.empty ())
+ {
+ verify_glb_ovr (s, fn, false /* opt */);
+ i = r.cmd_vars.insert (i, move (s)) + 1;
+ }
+ }
+ }
+
+ // Load the default options files, unless --no-default-options is
+ // specified on the command line or the BUILD2_DEF_OPT environment
+ // variable is set to a value other than 'true' or '1'.
+ //
+ // If loaded, prepend the default global overrides to the variables
+ // specified on the command line, unless BUILD2_VAR_OVR is set in which
+ // case just ignore them.
+ //
+ optional<string> env_def (get_env ("BUILD2_DEF_OPT"));
+
+ // False if --no-default-options is specified on the command line. Note
+ // that we cache the flag since it can be overridden by a default
+ // options file.
+ //
+ bool cmd_def (!ops.no_default_options ());
+
+ if (cmd_def && (!env_def || *env_def == "true" || *env_def == "1"))
+ try
+ {
+ optional<dir_path> extra;
+ if (ops.default_options_specified ())
+ extra = ops.default_options ();
+
+ // Load default options files.
+ //
+ default_options<options> def_ops (
+ load_default_options<options,
+ cli::argv_file_scanner,
+ cli::unknown_mode> (
+ nullopt /* sys_dir */,
+ path::home_directory (), // The home variable is not assigned yet.
+ extra,
+ default_options_files {{path ("b.options")},
+ nullopt /* start */},
+ [&trace, &verbosity] (const path& f, bool r, bool o)
+ {
+ if (verbosity () >= 3)
+ {
+ if (o)
+ trace << "treating " << f << " as "
+ << (r ? "remote" : "local");
+ else
+ trace << "loading " << (r ? "remote " : "local ") << f;
+ }
+ },
+ "--options-file",
+ args_pos,
+ 1024,
+ true /* args */));
+
+ // Merge the default and command line options.
+ //
+ ops = merge_default_options (def_ops, ops);
+
+ // Merge the default and command line global overrides, unless
+ // BUILD2_VAR_OVR is already set (in which case we assume this has
+ // already been done).
+ //
+ // Note that the "broken down" variable assignments occupying a single
+ // line are naturally supported.
+ //
+ if (!env_ovr)
+ r.cmd_vars =
+ merge_default_arguments (
+ def_ops,
+ r.cmd_vars,
+ [&verify_glb_ovr] (const default_options_entry<options>& e,
+ const strings&)
+ {
+ path_name fn (e.file);
+
+ // Verify that all arguments are global overrides.
+ //
+ for (const string& a: e.arguments)
+ verify_glb_ovr (a, fn, true /* opt */);
+ });
+ }
+ catch (const invalid_argument& e)
+ {
+ fail << "unable to load default options files: " << e;
+ }
+ catch (const pair<path, system_error>& e)
+ {
+ fail << "unable to load default options files: " << e.first << ": "
+ << e.second;
+ }
+ catch (const system_error& e)
+ {
+ fail << "unable to obtain home directory: " << e;
+ }
+
+ // Verify and save the global overrides present in cmd_vars (default,
+ // from the command line, etc), if any, into the BUILD2_VAR_OVR
+ // environment variable.
+ //
+ if (!r.cmd_vars.empty ())
+ {
+ string ovr;
+ for (const string& v: r.cmd_vars)
+ {
+ if (v[0] == '!')
+ {
+ if (v.find_first_of ("\n\r") != string::npos)
+ fail << "newline in global variable override '" << v << "'";
+
+ if (!ovr.empty ())
+ ovr += '\n';
+
+ ovr += v;
+ }
+ }
+
+ // Optimize for the common case.
+ //
+ // Note: cmd_vars may contain non-global overrides.
+ //
+ if (!ovr.empty () && (!env_ovr || *env_ovr != ovr))
+ set_env ("BUILD2_VAR_OVR", ovr);
+ }
+
+ // Propagate disabling of the default options files to the potential
+ // nested invocations.
+ //
+ if (!cmd_def && (!env_def || *env_def != "0"))
+ set_env ("BUILD2_DEF_OPT", "0");
+
+ // Validate options.
+ //
+ if (ops.progress () && ops.no_progress ())
+ fail << "both --progress and --no-progress specified";
+
+ if (ops.mtime_check () && ops.no_mtime_check ())
+ fail << "both --mtime-check and --no-mtime-check specified";
+ }
+ catch (const cli::exception& e)
+ {
+ fail << e;
+ }
+
+ r.verbosity = verbosity ();
+
+ if (ops.silent () && r.verbosity != 0)
+ fail << "specified with -v, -V, or --verbose verbosity level "
+ << r.verbosity << " is incompatible with --silent";
+
+ return r;
+ }
+}
diff --git a/libbuild2/cmdline.hxx b/libbuild2/cmdline.hxx
new file mode 100644
index 0000000..7bf41c2
--- /dev/null
+++ b/libbuild2/cmdline.hxx
@@ -0,0 +1,29 @@
+// file : libbuild2/cmdline.hxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+#ifndef LIBBUILD2_CMDLINE_HXX
+#define LIBBUILD2_CMDLINE_HXX
+
+#include <libbuild2/types.hxx>
+#include <libbuild2/forward.hxx>
+#include <libbuild2/utility.hxx>
+
+#include <libbuild2/b-options.hxx>
+#include <libbuild2/diagnostics.hxx>
+
+#include <libbuild2/export.hxx>
+
+namespace build2
+{
+ struct cmdline
+ {
+ strings cmd_vars;
+ string buildspec;
+ uint16_t verbosity;
+ };
+
+ LIBBUILD2_SYMEXPORT cmdline
+ parse_cmdline (tracer&, int argc, char* argv[], options&);
+}
+
+#endif // LIBBUILD2_CMDLINE_HXX
diff --git a/libbuild2/types-parsers.cxx b/libbuild2/types-parsers.cxx
new file mode 100644
index 0000000..86ce219
--- /dev/null
+++ b/libbuild2/types-parsers.cxx
@@ -0,0 +1,53 @@
+// file : libbuild2/types-parsers.cxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+#include <libbuild2/types-parsers.hxx>
+
+#include <libbuild2/b-options.hxx> // build2::build::cli namespace
+
+namespace build2
+{
+ namespace build
+ {
+ namespace cli
+ {
+ template <typename T>
+ static void
+ parse_path (T& x, scanner& s)
+ {
+ const char* o (s.next ());
+
+ if (!s.more ())
+ throw missing_value (o);
+
+ const char* v (s.next ());
+
+ try
+ {
+ x = T (v);
+
+ if (x.empty ())
+ throw invalid_value (o, v);
+ }
+ catch (const invalid_path&)
+ {
+ throw invalid_value (o, v);
+ }
+ }
+
+ void parser<path>::
+ parse (path& x, bool& xs, scanner& s)
+ {
+ xs = true;
+ parse_path (x, s);
+ }
+
+ void parser<dir_path>::
+ parse (dir_path& x, bool& xs, scanner& s)
+ {
+ xs = true;
+ parse_path (x, s);
+ }
+ }
+ }
+}
diff --git a/libbuild2/types-parsers.hxx b/libbuild2/types-parsers.hxx
new file mode 100644
index 0000000..c64e0f6
--- /dev/null
+++ b/libbuild2/types-parsers.hxx
@@ -0,0 +1,48 @@
+// file : libbuild2/types-parsers.hxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+// CLI parsers, included into the generated source files.
+//
+
+#ifndef LIBBUILD2_TYPES_PARSERS_HXX
+#define LIBBUILD2_TYPES_PARSERS_HXX
+
+#include <libbuild2/types.hxx>
+
+#include <libbuild2/types-parsers.hxx>
+
+namespace build2
+{
+ namespace build
+ {
+ namespace cli
+ {
+ class scanner;
+
+ template <typename T>
+ struct parser;
+
+ template <>
+ struct parser<path>
+ {
+ static void
+ parse (path&, bool&, scanner&);
+
+ static void
+ merge (path& b, const path& a) {b = a;}
+ };
+
+ template <>
+ struct parser<dir_path>
+ {
+ static void
+ parse (dir_path&, bool&, scanner&);
+
+ static void
+ merge (dir_path& b, const dir_path& a) {b = a;}
+ };
+ }
+ }
+}
+
+#endif // LIBBUILD2_TYPES_PARSERS_HXX
generated by cgit v1.1 at 2024-11-26 16:14:32 +0000