config_parse: provide parser init and dispose functions

Right now, all configuration file backends are expected to
directly mess with the configuration parser's internals in order
to set it up. Let's avoid doing that by implementing both a
`git_config_parser_init` and `git_config_parser_dispose` function
to clearly define the interface between configuration backends
and the parser.

Ideally, we would make the `git_config_parser` structure
definition private to its implementation. But as that would
require an additional memory allocation that was not required
before we just live with it being visible to others.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/config_parse.c b/src/config_parse.c
index bda1840fe..48ad1164f 100644
--- a/src/config_parse.c
+++ b/src/config_parse.c
@@ -474,6 +474,17 @@ out:
 	return error;
 }
 
+int git_config_parser_init(git_config_parser *out, const char *path, const char *data, size_t datalen)
+{
+	out->path = path;
+	return git_parse_ctx_init(&out->ctx, data, datalen);
+}
+
+void git_config_parser_dispose(git_config_parser *parser)
+{
+	git_parse_ctx_clear(&parser->ctx);
+}
+
 int git_config_parse(
 	git_config_parser *parser,
 	git_config_parser_section_cb on_section,