1 files changed, 49 insertions, 0 deletions
diff --git a/src/parse.h b/src/parse.h
new file mode 100644
index 000000000..56fbab5e6
--- /dev/null
+++ b/src/parse.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#include "common.h"
+
+typedef struct {
+	/* Original content buffer */
+	const char *content;
+	size_t content_len;
+
+	/* The remaining (unparsed) buffer */
+	const char *remain;
+	size_t remain_len;
+
+	const char *line;
+	size_t line_len;
+	size_t line_num;
+} git_parse_ctx;
+
+int git_parse_ctx_init(git_parse_ctx *ctx, const char *content, size_t content_len);
+void git_parse_ctx_clear(git_parse_ctx *ctx);
+
+#define git_parse_err(...) \
+	( giterr_set(GITERR_PATCH, __VA_ARGS__), -1 )
+
+#define git_parse_ctx_contains_s(ctx, str) \
+	git_parse_ctx_contains(ctx, str, sizeof(str) - 1)
+
+GIT_INLINE(bool) git_parse_ctx_contains(
+	git_parse_ctx *ctx, const char *str, size_t len)
+{
+	return (ctx->line_len >= len && memcmp(ctx->line, str, len) == 0);
+}
+
+void git_parse_advance_line(git_parse_ctx *ctx);
+void git_parse_advance_chars(git_parse_ctx *ctx, size_t char_cnt);
+int git_parse_advance_expected(
+	git_parse_ctx *ctx,
+	const char *expected,
+	size_t expected_len);
+
+#define git_parse_advance_expected_str(ctx, str) \
+	git_parse_advance_expected(ctx, str, strlen(str))
+
+int git_parse_advance_ws(git_parse_ctx *ctx);
+int git_parse_advance_nl(git_parse_ctx *ctx);