int git_reference__read_head(
git_reference **out,
git_repository *repo,
const char *path)
{
git_buf reference = GIT_BUF_INIT;
char *name = NULL;
int error;
if ((error = git_futils_readbuffer(&reference, path)) < 0)
goto out;
git_buf_rtrim(&reference);
if (git__strncmp(reference.ptr, GIT_SYMREF, strlen(GIT_SYMREF)) == 0) {
git_buf_consume(&reference, reference.ptr + strlen(GIT_SYMREF));
name = git_path_basename(path);
if ((*out = git_reference__alloc_symbolic(name, reference.ptr)) == NULL) {
error = -1;
goto out;
}
} else {
if ((error = git_reference_lookup(out, repo, reference.ptr)) < 0)
goto out;
}
out:
git__free(name);
git_buf_free(&reference);
return error;
}
static long diff_context_find(
const char *line,
long line_len,
char *out,
long out_size,
void *payload)
{
git_diff_find_context_payload *ctxt = payload;
if (git_buf_set(&ctxt->line, line, (size_t)line_len) < 0)
return -1;
git_buf_rtrim(&ctxt->line);
if (!ctxt->line.size)
return -1;
if (!ctxt->match_line || !ctxt->match_line(ctxt->driver, &ctxt->line))
return -1;
if (out_size > (long)ctxt->line.size)
out_size = (long)ctxt->line.size;
memcpy(out, ctxt->line.ptr, (size_t)out_size);
return out_size;
}
static int diff_context_line__pattern_match(
git_diff_driver *driver, git_buf *line)
{
size_t i, maxi = git_array_size(driver->fn_patterns);
regmatch_t pmatch[2];
for (i = 0; i < maxi; ++i) {
git_diff_driver_pattern *pat = git_array_get(driver->fn_patterns, i);
if (!regexec(&pat->re, line->ptr, 2, pmatch, 0)) {
if (pat->flags & REG_NEGATE)
return false;
/* use pmatch data to trim line data */
i = (pmatch[1].rm_so >= 0) ? 1 : 0;
git_buf_consume(line, git_buf_cstr(line) + pmatch[i].rm_so);
git_buf_truncate(line, pmatch[i].rm_eo - pmatch[i].rm_so);
git_buf_rtrim(line);
return true;
}
}
return false;
}
/*
* Read the contents of `file_path` and set `path_out` to the repo dir that
* it points to. Before calling, set `path_out` to the base directory that
* should be used if the contents of `file_path` are a relative path.
*/
static int read_gitfile(git_buf *path_out, const char *file_path)
{
int error = 0;
git_buf file = GIT_BUF_INIT;
size_t prefix_len = strlen(GIT_FILE_CONTENT_PREFIX);
assert(path_out && file_path);
if (git_futils_readbuffer(&file, file_path) < 0)
return -1;
git_buf_rtrim(&file);
/* apparently on Windows, some people use backslashes in paths */
git_path_mkposix(file.ptr);
if (git_buf_len(&file) <= prefix_len ||
memcmp(git_buf_cstr(&file), GIT_FILE_CONTENT_PREFIX, prefix_len) != 0)
{
giterr_set(GITERR_REPOSITORY,
"The `.git` file at '%s' is malformed", file_path);
error = -1;
}
else if ((error = git_path_dirname_r(path_out, file_path)) >= 0) {
const char *gitlink = git_buf_cstr(&file) + prefix_len;
while (*gitlink && git__isspace(*gitlink)) gitlink++;
error = git_path_prettify_dir(
path_out, gitlink, git_buf_cstr(path_out));
}
git_buf_free(&file);
return error;
}
/*
* Read the contents of `file_path` and set `path_out` to the repo dir that
* it points to. Before calling, set `path_out` to the base directory that
* should be used if the contents of `file_path` are a relative path.
*/
static int read_gitfile(git_buf *path_out, const char *file_path)
{
int error = 0;
git_buf file = GIT_BUF_INIT;
size_t prefix_len = strlen(GIT_FILE_CONTENT_PREFIX);
assert(path_out && file_path);
if (git_futils_readbuffer(&file, file_path) < 0)
return -1;
git_buf_rtrim(&file);
if (file.size <= prefix_len ||
memcmp(file.ptr, GIT_FILE_CONTENT_PREFIX, prefix_len) != 0)
{
giterr_set(GITERR_REPOSITORY, "The `.git` file at '%s' is malformed", file_path);
error = -1;
}
else if ((error = git_path_dirname_r(path_out, file_path)) >= 0) {
const char *gitlink = ((const char *)file.ptr) + prefix_len;
while (*gitlink && git__isspace(*gitlink)) gitlink++;
error = git_path_prettify_dir(path_out, gitlink, path_out->ptr);
}
git_buf_free(&file);
return error;
}
GIT_INLINE(int) rebase_readfile(
git_buf *out,
git_buf *state_path,
const char *filename)
{
size_t state_path_len = state_path->size;
int error;
git_buf_clear(out);
if ((error = git_buf_joinpath(state_path, state_path->ptr, filename)) < 0 ||
(error = git_futils_readbuffer(out, state_path->ptr)) < 0)
goto done;
git_buf_rtrim(out);
done:
git_buf_truncate(state_path, state_path_len);
return error;
}
static int parse_header_path_buf(git_buf *path, git_patch_parse_ctx *ctx, size_t path_len)
{
int error;
if ((error = git_buf_put(path, ctx->parse_ctx.line, path_len)) < 0)
goto done;
git_parse_advance_chars(&ctx->parse_ctx, path_len);
git_buf_rtrim(path);
if (path->size > 0 && path->ptr[0] == '"')
error = git_buf_unquote(path);
if (error < 0)
goto done;
git_path_squash_slashes(path);
done:
return error;
}
/* rewrite gitmodules -> .gitmodules
* rewrite the empty or relative urls inside each module
* rename the .gitted directory inside any submodule to .git
*/
void rewrite_gitmodules(const char *workdir)
{
git_buf in_f = GIT_BUF_INIT, out_f = GIT_BUF_INIT, path = GIT_BUF_INIT;
FILE *in, *out;
char line[256];
cl_git_pass(git_buf_joinpath(&in_f, workdir, "gitmodules"));
cl_git_pass(git_buf_joinpath(&out_f, workdir, ".gitmodules"));
cl_assert((in = fopen(in_f.ptr, "rb")) != NULL);
cl_assert((out = fopen(out_f.ptr, "wb")) != NULL);
while (fgets(line, sizeof(line), in) != NULL) {
char *scan = line;
while (*scan == ' ' || *scan == '\t') scan++;
/* rename .gitted -> .git in submodule directories */
if (git__prefixcmp(scan, "path =") == 0) {
scan += strlen("path =");
while (*scan == ' ') scan++;
git_buf_joinpath(&path, workdir, scan);
git_buf_rtrim(&path);
git_buf_joinpath(&path, path.ptr, ".gitted");
if (!git_buf_oom(&path) && p_access(path.ptr, F_OK) == 0) {
git_buf_joinpath(&out_f, workdir, scan);
git_buf_rtrim(&out_f);
git_buf_joinpath(&out_f, out_f.ptr, ".git");
if (!git_buf_oom(&out_f))
p_rename(path.ptr, out_f.ptr);
}
}
/* copy non-"url =" lines verbatim */
if (git__prefixcmp(scan, "url =") != 0) {
fputs(line, out);
continue;
}
/* convert relative URLs in "url =" lines */
scan += strlen("url =");
while (*scan == ' ') scan++;
if (*scan == '.') {
git_buf_joinpath(&path, workdir, scan);
git_buf_rtrim(&path);
} else if (!*scan || *scan == '\n') {
git_buf_joinpath(&path, workdir, "../testrepo.git");
} else {
fputs(line, out);
continue;
}
git_path_prettify(&path, path.ptr, NULL);
git_buf_putc(&path, '\n');
cl_assert(!git_buf_oom(&path));
fwrite(line, scan - line, sizeof(char), out);
fputs(path.ptr, out);
}
fclose(in);
fclose(out);
cl_must_pass(p_unlink(in_f.ptr));
git_buf_free(&in_f);
git_buf_free(&out_f);
git_buf_free(&path);
}
int git_rebase_open(
git_rebase **out,
git_repository *repo,
const git_rebase_options *given_opts)
{
git_rebase *rebase;
git_buf path = GIT_BUF_INIT, orig_head_name = GIT_BUF_INIT,
orig_head_id = GIT_BUF_INIT, onto_id = GIT_BUF_INIT;
int state_path_len, error;
assert(repo);
if ((error = rebase_check_versions(given_opts)) < 0)
return error;
if (rebase_alloc(&rebase, given_opts) < 0)
return -1;
rebase->repo = repo;
if ((error = rebase_state_type(&rebase->type, &rebase->state_path, repo)) < 0)
goto done;
if (rebase->type == GIT_REBASE_TYPE_NONE) {
giterr_set(GITERR_REBASE, "There is no rebase in progress");
error = GIT_ENOTFOUND;
goto done;
}
if ((error = git_buf_puts(&path, rebase->state_path)) < 0)
goto done;
state_path_len = git_buf_len(&path);
if ((error = git_buf_joinpath(&path, path.ptr, HEAD_NAME_FILE)) < 0 ||
(error = git_futils_readbuffer(&orig_head_name, path.ptr)) < 0)
goto done;
git_buf_rtrim(&orig_head_name);
if (strcmp(ORIG_DETACHED_HEAD, orig_head_name.ptr) == 0)
rebase->head_detached = 1;
git_buf_truncate(&path, state_path_len);
if ((error = git_buf_joinpath(&path, path.ptr, ORIG_HEAD_FILE)) < 0)
goto done;
if (!git_path_isfile(path.ptr)) {
/* Previous versions of git.git used 'head' here; support that. */
git_buf_truncate(&path, state_path_len);
if ((error = git_buf_joinpath(&path, path.ptr, HEAD_FILE)) < 0)
goto done;
}
if ((error = git_futils_readbuffer(&orig_head_id, path.ptr)) < 0)
goto done;
git_buf_rtrim(&orig_head_id);
if ((error = git_oid_fromstr(&rebase->orig_head_id, orig_head_id.ptr)) < 0)
goto done;
git_buf_truncate(&path, state_path_len);
if ((error = git_buf_joinpath(&path, path.ptr, ONTO_FILE)) < 0 ||
(error = git_futils_readbuffer(&onto_id, path.ptr)) < 0)
goto done;
git_buf_rtrim(&onto_id);
if ((error = git_oid_fromstr(&rebase->onto_id, onto_id.ptr)) < 0)
goto done;
if (!rebase->head_detached)
rebase->orig_head_name = git_buf_detach(&orig_head_name);
switch (rebase->type) {
case GIT_REBASE_TYPE_INTERACTIVE:
giterr_set(GITERR_REBASE, "Interactive rebase is not supported");
error = -1;
break;
case GIT_REBASE_TYPE_MERGE:
error = rebase_open_merge(rebase);
break;
case GIT_REBASE_TYPE_APPLY:
giterr_set(GITERR_REBASE, "Patch application rebase is not supported");
error = -1;
break;
default:
abort();
}
done:
if (error == 0)
*out = rebase;
else
git_rebase_free(rebase);
git_buf_free(&path);
git_buf_free(&orig_head_name);
git_buf_free(&orig_head_id);
git_buf_free(&onto_id);
return error;
}
int git_stash_save(
git_oid *out,
git_repository *repo,
const git_signature *stasher,
const char *message,
uint32_t flags)
{
git_index *index = NULL;
git_commit *b_commit = NULL, *i_commit = NULL, *u_commit = NULL;
git_buf msg = GIT_BUF_INIT;
int error;
assert(out && repo && stasher);
if ((error = git_repository__ensure_not_bare(repo, "stash save")) < 0)
return error;
if ((error = retrieve_base_commit_and_message(&b_commit, &msg, repo)) < 0)
goto cleanup;
if ((error = ensure_there_are_changes_to_stash(
repo,
(flags & GIT_STASH_INCLUDE_UNTRACKED) != 0,
(flags & GIT_STASH_INCLUDE_IGNORED) != 0)) < 0)
goto cleanup;
if ((error = git_repository_index(&index, repo)) < 0)
goto cleanup;
if ((error = commit_index(
&i_commit, index, stasher, git_buf_cstr(&msg), b_commit)) < 0)
goto cleanup;
if ((flags & (GIT_STASH_INCLUDE_UNTRACKED | GIT_STASH_INCLUDE_IGNORED)) &&
(error = commit_untracked(
&u_commit, index, stasher, git_buf_cstr(&msg),
i_commit, flags)) < 0)
goto cleanup;
if ((error = prepare_worktree_commit_message(&msg, message)) < 0)
goto cleanup;
if ((error = commit_worktree(
out, index, stasher, git_buf_cstr(&msg),
i_commit, b_commit, u_commit)) < 0)
goto cleanup;
git_buf_rtrim(&msg);
if ((error = update_reflog(out, repo, stasher, git_buf_cstr(&msg))) < 0)
goto cleanup;
if ((error = reset_index_and_workdir(
repo,
((flags & GIT_STASH_KEEP_INDEX) != 0) ? i_commit : b_commit,
(flags & GIT_STASH_INCLUDE_UNTRACKED) != 0)) < 0)
goto cleanup;
cleanup:
git_buf_free(&msg);
git_commit_free(i_commit);
git_commit_free(b_commit);
git_commit_free(u_commit);
git_index_free(index);
return error;
}