diff options
Diffstat (limited to 'libbuild2/file.hxx')
| -rw-r--r-- | libbuild2/file.hxx | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/libbuild2/file.hxx b/libbuild2/file.hxx index 8af408e..0123591 100644 --- a/libbuild2/file.hxx +++ b/libbuild2/file.hxx @@ -213,24 +213,27 @@ namespace build2 load_root (scope& root); // Extract the specified variable value from a buildfile. It is expected to - // be the first non-comment line and not to rely on any variable expansion - // other than those from the global scope or any variable overrides. Return - // an indication of whether the variable was found. + // be the n'th non-blank/comment line and not to rely on any variable + // expansions other than those from the global scope or any variable + // overrides. Return in second an indication of whether the variable was + // found. // LIBBUILD2_SYMEXPORT pair<value, bool> - extract_variable (context&, const path&, const variable&); + extract_variable (context&, const path&, const variable&, size_t n = 1); - // As above, but extract from a stream. The name argument is used for + // As above, but extract from a stream. The path argument is used for // diagnostics. // LIBBUILD2_SYMEXPORT pair<value, bool> - extract_variable (context&, istream&, const path& name, const variable&); + extract_variable (context&, + istream&, const path&, + const variable&, size_t = 1); // As above, but extract from a lexer (this could be useful for extracting // from stdin). // LIBBUILD2_SYMEXPORT pair<value, bool> - extract_variable (context&, lexer&, const variable&); + extract_variable (context&, lexer&, const variable&, size_t = 1); // Import has two phases: the first is triggered by the import directive in // the buildfile. It will try to find and load the project. Failed that, it |