static int populate_from_stdin(struct diff_filespec *s)
{
struct strbuf buf = STRBUF_INIT;
size_t size = 0;
if (strbuf_read(&buf, 0, 0) < 0)
return error_errno("error while reading from stdin");
s->should_munmap = 0;
s->data = strbuf_detach(&buf, &size);
s->size = size;
s->should_free = 1;
s->is_stdin = 1;
return 0;
}
static const char *map_refspec(const char *ref,
struct remote *remote, struct ref *local_refs)
{
struct ref *matched = NULL;
/* Does "ref" uniquely name our ref? */
if (count_refspec_match(ref, local_refs, &matched) != 1)
return ref;
if (remote->push) {
struct refspec query;
memset(&query, 0, sizeof(struct refspec));
query.src = matched->name;
if (!query_refspecs(remote->push, remote->push_refspec_nr, &query) &&
query.dst) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "%s%s:%s",
query.force ? "+" : "",
query.src, query.dst);
return strbuf_detach(&buf, NULL);
}
}
if (push_default == PUSH_DEFAULT_UPSTREAM &&
starts_with(matched->name, "refs/heads/")) {
struct branch *branch = branch_get(matched->name + 11);
if (branch->merge_nr == 1 && branch->merge[0]->src) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "%s:%s",
ref, branch->merge[0]->src);
return strbuf_detach(&buf, NULL);
}
}
return ref;
}
unsigned char *cmark_clean_autolink(chunk *url, int is_email)
{
strbuf buf = GH_BUF_INIT;
chunk_trim(url);
if (url->len == 0)
return NULL;
if (is_email)
strbuf_puts(&buf, "mailto:");
houdini_unescape_html_f(&buf, url->data, url->len);
return strbuf_detach(&buf);
}
static int get_terms(struct bisect_terms *terms)
{
struct strbuf str = STRBUF_INIT;
FILE *fp = NULL;
int res = 0;
fp = fopen(git_path_bisect_terms(), "r");
if (!fp) {
res = -1;
goto finish;
}
free_terms(terms);
strbuf_getline_lf(&str, fp);
terms->term_bad = strbuf_detach(&str, NULL);
strbuf_getline_lf(&str, fp);
terms->term_good = strbuf_detach(&str, NULL);
finish:
if (fp)
fclose(fp);
strbuf_release(&str);
return res;
}
/*
* The terms used for this bisect session are stored in BISECT_TERMS.
* We read them and store them to adapt the messages accordingly.
* Default is bad/good.
*/
void read_bisect_terms(const char **read_bad, const char **read_good)
{
struct strbuf str = STRBUF_INIT;
const char *filename = git_path("BISECT_TERMS");
FILE *fp = fopen(filename, "r");
if (!fp) {
if (errno == ENOENT) {
*read_bad = "bad";
*read_good = "good";
return;
} else {
die("could not read file '%s': %s", filename,
strerror(errno));
}
} else {
strbuf_getline(&str, fp, '\n');
*read_bad = strbuf_detach(&str, NULL);
strbuf_getline(&str, fp, '\n');
*read_good = strbuf_detach(&str, NULL);
}
strbuf_release(&str);
fclose(fp);
}
int check_signature(const char *payload, size_t plen, const char *signature,
size_t slen, struct signature_check *sigc)
{
struct strbuf gpg_output = STRBUF_INIT;
struct strbuf gpg_status = STRBUF_INIT;
int status;
sigc->result = 'N';
status = verify_signed_buffer(payload, plen, signature, slen,
&gpg_output, &gpg_status);
if (status && !gpg_output.len)
goto out;
sigc->payload = xmemdupz(payload, plen);
sigc->gpg_output = strbuf_detach(&gpg_output, NULL);
sigc->gpg_status = strbuf_detach(&gpg_status, NULL);
parse_gpg_output(sigc);
out:
strbuf_release(&gpg_status);
strbuf_release(&gpg_output);
return sigc->result != 'G' && sigc->result != 'U';
}
/**
* For an option opt, recreates the command-line option in opt->value which
* must be an char* initialized to NULL. This is useful when we need to pass
* the command-line option to another command. Since any previous value will be
* overwritten, this callback should only be used for options where the last
* one wins.
*/
int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
{
static struct strbuf sb = STRBUF_INIT;
char **opt_value = opt->value;
if (recreate_opt(&sb, opt, arg, unset) < 0)
return -1;
if (*opt_value)
free(*opt_value);
*opt_value = strbuf_detach(&sb, NULL);
return 0;
}
static char *unable_to_lock_message(const char *path, int err)
{
struct strbuf buf = STRBUF_INIT;
if (err == EEXIST) {
strbuf_addf(&buf, "Unable to create '%s.lock': %s.\n\n"
"If no other git process is currently running, this probably means a\n"
"git process crashed in this repository earlier. Make sure no other git\n"
"process is running and remove the file manually to continue.",
absolute_path(path), strerror(err));
} else
strbuf_addf(&buf, "Unable to create '%s.lock': %s",
absolute_path(path), strerror(err));
return strbuf_detach(&buf, NULL);
}
static const char *disambiguate_ref(const char *ref, int *must_free_result)
{
unsigned char sha1[20];
struct strbuf longref = STRBUF_INIT;
strbuf_addf(&longref, "refs/heads/%s", ref);
if (get_sha1(longref.buf, sha1) == 0) {
*must_free_result = 1;
return strbuf_detach(&longref, NULL);
}
*must_free_result = 0;
strbuf_release(&longref);
return ref;
}
static void insert_one_record(struct shortlog *log,
const char *author,
const char *oneline)
{
struct string_list_item *item;
item = string_list_insert(&log->list, author);
if (log->summary)
item->util = (void *)(UTIL_TO_INT(item) + 1);
else {
const char *dot3 = log->common_repo_prefix;
char *buffer, *p;
struct strbuf subject = STRBUF_INIT;
const char *eol;
/* Skip any leading whitespace, including any blank lines. */
while (*oneline && isspace(*oneline))
oneline++;
eol = strchr(oneline, '\n');
if (!eol)
eol = oneline + strlen(oneline);
if (starts_with(oneline, "[PATCH")) {
char *eob = strchr(oneline, ']');
if (eob && (!eol || eob < eol))
oneline = eob + 1;
}
while (*oneline && isspace(*oneline) && *oneline != '\n')
oneline++;
format_subject(&subject, oneline, " ");
buffer = strbuf_detach(&subject, NULL);
if (dot3) {
int dot3len = strlen(dot3);
if (dot3len > 5) {
while ((p = strstr(buffer, dot3)) != NULL) {
int taillen = strlen(p) - dot3len;
memcpy(p, "/.../", 5);
memmove(p + 5, p + dot3len, taillen + 1);
}
}
}
if (item->util == NULL)
item->util = xcalloc(1, sizeof(struct string_list));
string_list_append(item->util, buffer);
}
}
static void mktree_line(char *buf, size_t len, int line_termination, int allow_missing)
{
char *ptr, *ntr;
unsigned mode;
enum object_type mode_type; /* object type derived from mode */
enum object_type obj_type; /* object type derived from sha */
char *path;
unsigned char sha1[20];
ptr = buf;
/*
* Read non-recursive ls-tree output format:
* mode SP type SP sha1 TAB name
*/
mode = strtoul(ptr, &ntr, 8);
if (ptr == ntr || !ntr || *ntr != ' ')
die("input format error: %s", buf);
ptr = ntr + 1; /* type */
ntr = strchr(ptr, ' ');
if (!ntr || buf + len <= ntr + 40 ||
ntr[41] != '\t' ||
get_sha1_hex(ntr + 1, sha1))
die("input format error: %s", buf);
/* It is perfectly normal if we do not have a commit from a submodule */
if (S_ISGITLINK(mode))
allow_missing = 1;
*ntr++ = 0; /* now at the beginning of SHA1 */
path = ntr + 41; /* at the beginning of name */
if (line_termination && path[0] == '"') {
struct strbuf p_uq = STRBUF_INIT;
if (unquote_c_style(&p_uq, path, NULL))
die("invalid quoting");
path = strbuf_detach(&p_uq, NULL);
}
/*
* Object type is redundantly derivable three ways.
* These should all agree.
*/
mode_type = object_type(mode);
if (mode_type != type_from_string(ptr)) {
die("entry '%s' object type (%s) doesn't match mode type (%s)",
path, ptr, typename(mode_type));
}
static char *find_linked_symref(const char *symref, const char *branch,
const char *id)
{
struct strbuf sb = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
char *existing = NULL;
/*
* $GIT_COMMON_DIR/$symref (e.g. HEAD) is practically outside
* $GIT_DIR so resolve_ref_unsafe() won't work (it uses
* git_path). Parse the ref ourselves.
*/
if (id)
strbuf_addf(&path, "%s/worktrees/%s/%s", get_git_common_dir(), id, symref);
else
strbuf_addf(&path, "%s/%s", get_git_common_dir(), symref);
if (!strbuf_readlink(&sb, path.buf, 0)) {
if (!starts_with(sb.buf, "refs/") ||
check_refname_format(sb.buf, 0))
goto done;
} else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
starts_with(sb.buf, "ref:")) {
strbuf_remove(&sb, 0, strlen("ref:"));
strbuf_trim(&sb);
} else
goto done;
if (strcmp(sb.buf, branch))
goto done;
if (id) {
strbuf_reset(&path);
strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id);
if (strbuf_read_file(&gitdir, path.buf, 0) <= 0)
goto done;
strbuf_rtrim(&gitdir);
} else
strbuf_addstr(&gitdir, get_git_common_dir());
strbuf_strip_suffix(&gitdir, ".git");
existing = strbuf_detach(&gitdir, NULL);
done:
strbuf_release(&path);
strbuf_release(&sb);
strbuf_release(&gitdir);
return existing;
}
void update_worktree_location(struct worktree *wt, const char *path_)
{
struct strbuf path = STRBUF_INIT;
if (is_main_worktree(wt))
BUG("can't relocate main worktree");
strbuf_realpath(&path, path_, 1);
if (fspathcmp(wt->path, path.buf)) {
write_file(git_common_path("worktrees/%s/gitdir", wt->id),
"%s/.git", path.buf);
free(wt->path);
wt->path = strbuf_detach(&path, NULL);
}
strbuf_release(&path);
}
unsigned char *cmark_markdown_to_html(unsigned char *text, int len)
{
node_block *blocks;
strbuf htmlbuf = GH_BUF_INIT;
unsigned char *result;
blocks = cmark_parse_document(text, len);
cmark_render_html(&htmlbuf, blocks);
cmark_free_blocks(blocks);
result = strbuf_detach(&htmlbuf);
strbuf_free(&htmlbuf);
return result;
}
static void repo_set_commondir(struct repository *repo,
const char *commondir)
{
struct strbuf sb = STRBUF_INIT;
free(repo->commondir);
if (commondir) {
repo->different_commondir = 1;
repo->commondir = xstrdup(commondir);
return;
}
repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir);
repo->commondir = strbuf_detach(&sb, NULL);
}
static char *read_line_from_git_path(const char *filename)
{
struct strbuf buf = STRBUF_INIT;
FILE *fp = fopen(git_path("%s", filename), "r");
if (!fp) {
strbuf_release(&buf);
return NULL;
}
strbuf_getline(&buf, fp, '\n');
if (!fclose(fp)) {
return strbuf_detach(&buf, NULL);
} else {
strbuf_release(&buf);
return NULL;
}
}
static void put_object_name(struct fsck_options *options, struct object *obj,
const char *fmt, ...)
{
va_list ap;
struct strbuf buf = STRBUF_INIT;
char *existing;
if (!options->object_names)
return;
existing = lookup_decoration(options->object_names, obj);
if (existing)
return;
va_start(ap, fmt);
strbuf_vaddf(&buf, fmt, ap);
add_decoration(options->object_names, obj, strbuf_detach(&buf, NULL));
va_end(ap);
}
static struct worktree *get_linked_worktree(const char *id)
{
struct worktree *worktree = NULL;
struct strbuf path = STRBUF_INIT;
struct strbuf worktree_path = STRBUF_INIT;
struct strbuf head_ref = STRBUF_INIT;
int is_detached = 0;
if (!id)
die("Missing linked worktree name");
strbuf_git_common_path(&path, "worktrees/%s/gitdir", id);
if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0)
/* invalid gitdir file */
goto done;
strbuf_rtrim(&worktree_path);
if (!strbuf_strip_suffix(&worktree_path, "/.git")) {
strbuf_reset(&worktree_path);
strbuf_add_absolute_path(&worktree_path, ".");
strbuf_strip_suffix(&worktree_path, "/.");
}
strbuf_reset(&path);
strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
goto done;
worktree = xmalloc(sizeof(struct worktree));
worktree->path = strbuf_detach(&worktree_path, NULL);
worktree->id = xstrdup(id);
worktree->is_bare = 0;
worktree->head_ref = NULL;
worktree->is_detached = is_detached;
worktree->is_current = 0;
add_head_info(&head_ref, worktree);
worktree->lock_reason = NULL;
worktree->lock_reason_valid = 0;
done:
strbuf_release(&path);
strbuf_release(&worktree_path);
strbuf_release(&head_ref);
return worktree;
}
// taken from msysgit: compat/mingw.c
const char *get_windows_home_directory(void)
{
static const char *home_directory = NULL;
struct strbuf buf = STRBUF_INIT;
if (home_directory)
return home_directory;
home_directory = getenv("HOME");
if (home_directory && *home_directory)
return home_directory;
strbuf_addf(&buf, "%s%s", getenv("HOMEDRIVE"), getenv("HOMEPATH"));
home_directory = strbuf_detach(&buf, NULL);
return home_directory;
}
static void wt_status_print_submodule_summary(struct wt_status *s, int uncommitted)
{
struct child_process sm_summary = CHILD_PROCESS_INIT;
struct strbuf cmd_stdout = STRBUF_INIT;
struct strbuf summary = STRBUF_INIT;
char *summary_content;
argv_array_pushf(&sm_summary.env_array, "GIT_INDEX_FILE=%s",
s->index_file);
argv_array_push(&sm_summary.args, "submodule");
argv_array_push(&sm_summary.args, "summary");
argv_array_push(&sm_summary.args, uncommitted ? "--files" : "--cached");
argv_array_push(&sm_summary.args, "--for-status");
argv_array_push(&sm_summary.args, "--summary-limit");
argv_array_pushf(&sm_summary.args, "%d", s->submodule_summary);
if (!uncommitted)
argv_array_push(&sm_summary.args, s->amend ? "HEAD^" : "HEAD");
sm_summary.git_cmd = 1;
sm_summary.no_stdin = 1;
capture_command(&sm_summary, &cmd_stdout, 1024);
/* prepend header, only if there's an actual output */
if (cmd_stdout.len) {
if (uncommitted)
strbuf_addstr(&summary, _("Submodules changed but not updated:"));
else
strbuf_addstr(&summary, _("Submodule changes to be committed:"));
strbuf_addstr(&summary, "\n\n");
}
strbuf_addbuf(&summary, &cmd_stdout);
strbuf_release(&cmd_stdout);
if (s->display_comment_prefix) {
size_t len;
summary_content = strbuf_detach(&summary, &len);
strbuf_add_commented_lines(&summary, summary_content, len);
free(summary_content);
}
fputs(summary.buf, s->fp);
strbuf_release(&summary);
}
static void repo_setup_env(struct repository *repo)
{
struct strbuf sb = STRBUF_INIT;
repo->different_commondir = find_common_dir(&sb, repo->gitdir,
!repo->ignore_env);
free(repo->commondir);
repo->commondir = strbuf_detach(&sb, NULL);
free(repo->objectdir);
repo->objectdir = git_path_from_env(DB_ENVIRONMENT, repo->commondir,
"objects", !repo->ignore_env);
free(repo->graft_file);
repo->graft_file = git_path_from_env(GRAFT_ENVIRONMENT, repo->commondir,
"info/grafts", !repo->ignore_env);
free(repo->index_file);
repo->index_file = git_path_from_env(INDEX_ENVIRONMENT, repo->gitdir,
"index", !repo->ignore_env);
}
static char *guess_ref(const char *name, struct ref *peer)
{
struct strbuf buf = STRBUF_INIT;
unsigned char sha1[20];
const char *r = resolve_ref(peer->name, sha1, 1, NULL);
if (!r)
return NULL;
if (!prefixcmp(r, "refs/heads/"))
strbuf_addstr(&buf, "refs/heads/");
else if (!prefixcmp(r, "refs/tags/"))
strbuf_addstr(&buf, "refs/tags/");
else
return NULL;
strbuf_addstr(&buf, name);
return strbuf_detach(&buf, NULL);
}
char *cgit_fileurl(const char *reponame, const char *pagename,
const char *filename, const char *query)
{
struct strbuf sb = STRBUF_INIT;
char *delim;
if (ctx.cfg.virtual_root) {
strbuf_addf(&sb, "%s%s/%s/%s", ctx.cfg.virtual_root, reponame,
pagename, (filename ? filename:""));
delim = "?";
} else {
strbuf_addf(&sb, "?url=%s/%s/%s", reponame, pagename,
(filename ? filename : ""));
delim = "&";
}
if (query)
strbuf_addf(&sb, "%s%s", delim, query);
return strbuf_detach(&sb, NULL);
}
const char *submodule_strategy_to_string(const struct submodule_update_strategy *s)
{
struct strbuf sb = STRBUF_INIT;
switch (s->type) {
case SM_UPDATE_CHECKOUT:
return "checkout";
case SM_UPDATE_MERGE:
return "merge";
case SM_UPDATE_REBASE:
return "rebase";
case SM_UPDATE_NONE:
return "none";
case SM_UPDATE_UNSPECIFIED:
return NULL;
case SM_UPDATE_COMMAND:
strbuf_addf(&sb, "!%s", s->command);
return strbuf_detach(&sb, NULL);
}
return NULL;
}
static struct child_process *get_helper(struct transport *transport)
{
struct helper_data *data = transport->data;
struct strbuf buf = STRBUF_INIT;
struct child_process *helper;
if (data->helper)
return data->helper;
helper = xcalloc(1, sizeof(*helper));
helper->in = -1;
helper->out = -1;
helper->err = 0;
helper->argv = xcalloc(4, sizeof(*helper->argv));
strbuf_addf(&buf, "remote-%s", data->name);
helper->argv[0] = strbuf_detach(&buf, NULL);
helper->argv[1] = transport->remote->name;
helper->argv[2] = transport->url;
helper->git_cmd = 1;
if (start_command(helper))
die("Unable to run helper: git %s", helper->argv[0]);
data->helper = helper;
write_str_in_full(helper->in, "capabilities\n");
data->out = xfdopen(helper->out, "r");
while (1) {
if (strbuf_getline(&buf, data->out, '\n') == EOF)
exit(128); /* child died, message supplied already */
if (!*buf.buf)
break;
if (!strcmp(buf.buf, "fetch"))
data->fetch = 1;
if (!strcmp(buf.buf, "option"))
data->option = 1;
if (!strcmp(buf.buf, "push"))
data->push = 1;
}
return data->helper;
}
static int collect_expect(const struct option *opt, const char *arg, int unset)
{
struct string_list *expect;
struct string_list_item *item;
struct strbuf label = STRBUF_INIT;
const char *colon;
if (!arg || unset)
die("malformed --expect option");
expect = (struct string_list *)opt->value;
colon = strchr(arg, ':');
if (!colon)
die("malformed --expect option, lacking a colon");
strbuf_add(&label, arg, colon - arg);
item = string_list_insert(expect, strbuf_detach(&label, NULL));
if (item->util)
die("malformed --expect option, duplicate %s", label.buf);
item->util = (void *)arg;
return 0;
}
static int file_callback(const struct option *opt, const char *arg, int unset)
{
struct grep_opt *grep_opt = opt->value;
FILE *patterns;
int lno = 0;
struct strbuf sb = STRBUF_INIT;
patterns = fopen(arg, "r");
if (!patterns)
die_errno("cannot open '%s'", arg);
while (strbuf_getline(&sb, patterns, '\n') == 0) {
/* ignore empty line like grep does */
if (sb.len == 0)
continue;
append_grep_pattern(grep_opt, strbuf_detach(&sb, NULL), arg,
++lno, GREP_PATTERN);
}
fclose(patterns);
strbuf_release(&sb);
return 0;
}
static void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
unsigned int mode, enum object_type *type,
unsigned long *sizep, const struct commit *commit)
{
void *buffer;
buffer = read_sha1_file(sha1, type, sizep);
if (buffer && S_ISREG(mode)) {
struct strbuf buf = STRBUF_INIT;
size_t size = 0;
strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
convert_to_working_tree(path, buf.buf, buf.len, &buf);
if (commit)
format_subst(commit, buf.buf, buf.len, &buf);
buffer = strbuf_detach(&buf, &size);
*sizep = size;
}
return buffer;
}
/* Help to copy the thing properly quoted for the shell safety.
* any single quote is replaced with '\'', any exclamation point
* is replaced with '\!', and the whole thing is enclosed in a
* single quote pair.
*
* E.g.
* original sq_quote result
* name ==> name ==> 'name'
* a b ==> a b ==> 'a b'
* a'b ==> a'\''b ==> 'a'\''b'
* a!b ==> a'\!'b ==> 'a'\!'b'
*/
void sq_quote_buf(struct strbuf *dst, const char *src)
{
char *to_free = NULL;
if (dst->buf == src)
to_free = strbuf_detach(dst, NULL);
strbuf_addch(dst, '\'');
while (*src) {
size_t len = strcspn(src, "'!");
strbuf_add(dst, src, len);
src += len;
while (need_bs_quote(*src)) {
strbuf_addstr(dst, "'\\");
strbuf_addch(dst, *src++);
strbuf_addch(dst, '\'');
}
}
strbuf_addch(dst, '\'');
free(to_free);
}
static char *get_git_prefix(const char *wd, int *out_status)
{
char *eol;
int status;
struct strbuf output = STRBUF_INIT;
status = exec_program(wd, &output, NULL, WAITMODE,
"git", "rev-parse", "--show-prefix", NULL);
if (out_status)
*out_status = status;
if (status) {
strbuf_release(&output);
return NULL;
}
eol = strchr(output.buf, '\n');
if (eol)
*eol = 0;
return strbuf_detach(&output, NULL);
}
