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authorKaren Arutyunov <karen@codesynthesis.com>2021-12-08 22:46:50 +0300
committerKaren Arutyunov <karen@codesynthesis.com>2022-01-14 14:29:01 +0300
commit6a68b1fd2161357a5905b875e9d59609a2b829b1 (patch)
tree52f925120b329928d1cdcfeab3e35cd48319928e /tests/buildfile-scanner/driver.cxx
parentfc5da517f670a7ddf844527bfb3dbb9c9c2d482d (diff)
Add support for package dependency and requirement alternatives representation new syntax
Diffstat (limited to 'tests/buildfile-scanner/driver.cxx')
-rw-r--r--tests/buildfile-scanner/driver.cxx106
1 files changed, 106 insertions, 0 deletions
diff --git a/tests/buildfile-scanner/driver.cxx b/tests/buildfile-scanner/driver.cxx
new file mode 100644
index 0000000..fec15bd
--- /dev/null
+++ b/tests/buildfile-scanner/driver.cxx
@@ -0,0 +1,106 @@
+// file : tests/buildfile-scanner/driver.cxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+#include <ios> // ios_base::failbit, ios_base::badbit
+#include <string>
+#include <iostream>
+
+#include <libbutl/utf8.hxx>
+#include <libbutl/utility.hxx> // operator<<(ostream,exception)
+#include <libbutl/char-scanner.hxx>
+
+#include <libbpkg/buildfile-scanner.hxx>
+
+#undef NDEBUG
+#include <cassert>
+
+using namespace std;
+using namespace butl;
+using namespace bpkg;
+
+// Usages:
+//
+// argv[0] (-e|-l [<char>]|-b)
+//
+// Read and scan the buildfile from stdin and print the scan result to stdout.
+//
+// -e scan evaluation context
+// -l [<char>] scan single line, optionally terminated with the stop character
+// -b scan buildfile block
+//
+int
+main (int argc, char* argv[])
+{
+ assert (argc >= 2);
+
+ string mode (argv[1]);
+
+ cin.exceptions (ios_base::failbit | ios_base::badbit);
+ cout.exceptions (ios_base::failbit | ios_base::badbit);
+
+ using scanner = char_scanner<utf8_validator>;
+
+ scanner s (cin);
+
+ string bsn ("stdin");
+ buildfile_scanner<utf8_validator, 1> bs (s, bsn);
+
+ try
+ {
+ string r;
+
+ if (mode == "-e")
+ {
+ scanner::xchar c (s.get ());
+ assert (c == '(');
+
+ r += c;
+ r += bs.scan_eval ();
+
+ c = s.get ();
+ assert (c == ')');
+
+ r += c;
+ }
+ else if (mode == "-l")
+ {
+ char stop ('\0');
+
+ if (argc == 3)
+ {
+ const char* chr (argv[2]);
+ assert (chr[0] != '\0' && chr[1] == '\0');
+
+ stop = chr[0];
+ }
+
+ r += bs.scan_line (stop);
+
+ scanner::xchar c (s.get ());
+ assert (scanner::eos (c) || c == '\n' || (stop != '\0' && c == stop));
+ }
+ else if (mode == "-b")
+ {
+ scanner::xchar c (s.get ());
+ assert (c == '{');
+
+ r += c;
+ r += bs.scan_block ();
+
+ assert (scanner::eos (s.peek ()));
+
+ r += "}\n";
+ }
+ else
+ assert (false);
+
+ cout << r;
+ }
+ catch (const buildfile_scanning& e)
+ {
+ cerr << e << endl;
+ return 1;
+ }
+
+ return 0;
+}