1 files changed, 155 insertions, 0 deletions
diff --git a/libbuild2/utility.ixx b/libbuild2/utility.ixx
new file mode 100644
index 0000000..8d3f6ba
--- /dev/null
+++ b/libbuild2/utility.ixx
@@ -0,0 +1,155 @@
+// file      : libbuild2/utility.ixx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+namespace build2
+{
+  inline void
+  hash_path (sha256& cs, const path& p, const dir_path& prefix)
+  {
+    // Note: for efficiency we don't use path::leaf() and "skip" the prefix
+    // without copying.
+    //
+    const char* s (p.string ().c_str ());
+
+    if (!prefix.empty () && p.sub (prefix))
+    {
+      s += prefix.size (); // Does not include trailing slash except for root.
+      if (path::traits_type::is_separator (*s))
+        ++s;
+    }
+
+    cs.append (s);
+  }
+
+  template <typename T>
+  inline void
+  append_options (cstrings& args, T& s, const variable& var, const char* e)
+  {
+    append_options (args, s[var], e);
+  }
+
+  template <typename T>
+  inline void
+  append_options (strings& args, T& s, const variable& var, const char* e)
+  {
+    append_options (args, s[var], e);
+  }
+
+  template <typename T>
+  inline void
+  hash_options (sha256& csum, T& s, const variable& var)
+  {
+    hash_options (csum, s[var]);
+  }
+
+  template <typename T>
+  inline void
+  append_options (cstrings& args, T& s, const char* var, const char* e)
+  {
+    append_options (args, s[var], e);
+  }
+
+  template <typename T>
+  inline void
+  append_options (strings& args, T& s, const char* var, const char* e)
+  {
+    append_options (args, s[var], e);
+  }
+
+  template <typename T>
+  inline void
+  hash_options (sha256& csum, T& s, const char* var)
+  {
+    hash_options (csum, s[var]);
+  }
+
+  inline void
+  append_options (cstrings& args, const strings& sv, const char* e)
+  {
+    if (size_t n = sv.size ())
+      append_options (args, sv, n, e);
+  }
+
+  inline void
+  append_options (strings& args, const strings& sv, const char* e)
+  {
+    if (size_t n = sv.size ())
+      append_options (args, sv, n, e);
+  }
+
+  inline void
+  hash_options (sha256& csum, const strings& sv)
+  {
+    if (size_t n = sv.size ())
+      hash_options (csum, sv, n);
+  }
+
+  template <typename T>
+  inline bool
+  find_option (const char* o, T& s, const variable& var, bool ic)
+  {
+    return find_option (o, s[var], ic);
+  }
+
+  template <typename T>
+  inline bool
+  find_option (const char* o, T& s, const char* var, bool ic)
+  {
+    return find_option (o, s[var], ic);
+  }
+
+  template <typename T>
+  inline bool
+  find_options (initializer_list<const char*> os,
+                T& s,
+                const variable& var,
+                bool ic)
+  {
+    return find_options (os, s[var], ic);
+  }
+
+  template <typename T>
+  inline bool
+  find_options (initializer_list<const char*> os,
+                T& s,
+                const char* var,
+                bool ic)
+  {
+    return find_options (os, s[var], ic);
+  }
+
+  template <typename T>
+  inline const string*
+  find_option_prefix (const char* p, T& s, const variable& var, bool ic)
+  {
+    return find_option_prefix (p, s[var], ic);
+  }
+
+  template <typename T>
+  inline const string*
+  find_option_prefix (const char* p, T& s, const char* var, bool ic)
+  {
+    return find_option_prefix (p, s[var], ic);
+  }
+
+  template <typename T>
+  inline const string*
+  find_option_prefixes (initializer_list<const char*> ps,
+                        T& s,
+                        const variable& var,
+                        bool ic)
+  {
+    return find_option_prefixes (ps, s[var], ic);
+  }
+
+  template <typename T>
+  inline const string*
+  find_option_prefixes (initializer_list<const char*> ps,
+                        T& s,
+                        const char* var,
+                        bool ic)
+  {
+    return find_option_prefixes (ps, s[var], ic);
+  }
+}