static int parse_header_start(git_patch_parsed *patch, git_patch_parse_ctx *ctx)
{
if (parse_header_path(&patch->header_old_path, ctx) < 0)
return git_parse_err("corrupt old path in git diff header at line %"PRIuZ,
ctx->parse_ctx.line_num);
if (git_parse_advance_ws(&ctx->parse_ctx) < 0 ||
parse_header_path(&patch->header_new_path, ctx) < 0)
return git_parse_err("corrupt new path in git diff header at line %"PRIuZ,
ctx->parse_ctx.line_num);
/*
* We cannot expect to be able to always parse paths correctly at this
* point. Due to the possibility of unquoted names, whitespaces in
* filenames and custom prefixes we have to allow that, though, and just
* proceeed here. We then hope for the "---" and "+++" lines to fix that
* for us.
*/
if (!git_parse_ctx_contains(&ctx->parse_ctx, "\n", 1)) {
git_parse_advance_chars(&ctx->parse_ctx, ctx->parse_ctx.line_len - 1);
git__free(patch->header_old_path);
patch->header_old_path = NULL;
git__free(patch->header_new_path);
patch->header_new_path = NULL;
}
return 0;
}
static int parse_header_git_newpath(
git_patch_parsed *patch, git_patch_parse_ctx *ctx)
{
return parse_header_path(&patch->new_path, ctx);
}
static int parse_header_git(
git_patch_parsed *patch,
git_patch_parse_ctx *ctx)
{
size_t i;
int error = 0;
/* Parse the diff --git line */
if (parse_advance_expected_s(ctx, "diff --git ") < 0)
return parse_err("corrupt git diff header at line %d", ctx->line_num);
if (parse_header_path(&patch->header_old_path, ctx) < 0)
return parse_err("corrupt old path in git diff header at line %d",
ctx->line_num);
if (parse_advance_ws(ctx) < 0 ||
parse_header_path(&patch->header_new_path, ctx) < 0)
return parse_err("corrupt new path in git diff header at line %d",
ctx->line_num);
/* Parse remaining header lines */
for (parse_advance_line(ctx);
ctx->remain_len > 0;
parse_advance_line(ctx)) {
bool found = false;
if (ctx->line_len == 0 || ctx->line[ctx->line_len - 1] != '\n')
break;
for (i = 0; i < ARRAY_SIZE(header_git_ops); i++) {
const header_git_op *op = &header_git_ops[i];
size_t op_len = strlen(op->str);
if (memcmp(ctx->line, op->str, min(op_len, ctx->line_len)) != 0)
continue;
/* Do not advance if this is the patch separator */
if (op->fn == NULL)
goto done;
parse_advance_chars(ctx, op_len);
if ((error = op->fn(patch, ctx)) < 0)
goto done;
parse_advance_ws(ctx);
parse_advance_expected_s(ctx, "\n");
if (ctx->line_len > 0) {
error = parse_err("trailing data at line %d", ctx->line_num);
goto done;
}
found = true;
break;
}
if (!found) {
error = parse_err("invalid patch header at line %d",
ctx->line_num);
goto done;
}
}
done:
return error;
}
static int parse_header_git_oldpath(
git_patch_parsed *patch, git_patch_parse_ctx *ctx)
{
return parse_header_path(&patch->old_path, ctx);
}
