diff options
Diffstat (limited to 'hook.c')
| -rw-r--r-- | hook.c | 189 |
1 files changed, 189 insertions, 0 deletions
@@ -0,0 +1,189 @@ +#include "git-compat-util.h" +#include "abspath.h" +#include "advice.h" +#include "gettext.h" +#include "hook.h" +#include "path.h" +#include "run-command.h" +#include "config.h" +#include "strbuf.h" + +const char *find_hook(const char *name) +{ + static struct strbuf path = STRBUF_INIT; + + strbuf_reset(&path); + strbuf_git_path(&path, "hooks/%s", name); + if (access(path.buf, X_OK) < 0) { + int err = errno; + +#ifdef STRIP_EXTENSION + strbuf_addstr(&path, STRIP_EXTENSION); + if (access(path.buf, X_OK) >= 0) + return path.buf; + if (errno == EACCES) + err = errno; +#endif + + if (err == EACCES && advice_enabled(ADVICE_IGNORED_HOOK)) { + static struct string_list advise_given = STRING_LIST_INIT_DUP; + + if (!string_list_lookup(&advise_given, name)) { + string_list_insert(&advise_given, name); + advise(_("The '%s' hook was ignored because " + "it's not set as executable.\n" + "You can disable this warning with " + "`git config advice.ignoredHook false`."), + path.buf); + } + } + return NULL; + } + return path.buf; +} + +int hook_exists(const char *name) +{ + return !!find_hook(name); +} + +static int pick_next_hook(struct child_process *cp, + struct strbuf *out UNUSED, + void *pp_cb, + void **pp_task_cb UNUSED) +{ + struct hook_cb_data *hook_cb = pp_cb; + const char *hook_path = hook_cb->hook_path; + + if (!hook_path) + return 0; + + cp->no_stdin = 1; + strvec_pushv(&cp->env, hook_cb->options->env.v); + /* reopen the file for stdin; run_command closes it. */ + if (hook_cb->options->path_to_stdin) { + cp->no_stdin = 0; + cp->in = xopen(hook_cb->options->path_to_stdin, O_RDONLY); + } + cp->stdout_to_stderr = 1; + cp->trace2_hook_name = hook_cb->hook_name; + cp->dir = hook_cb->options->dir; + + strvec_push(&cp->args, hook_path); + strvec_pushv(&cp->args, hook_cb->options->args.v); + + /* + * This pick_next_hook() will be called again, we're only + * running one hook, so indicate that no more work will be + * done. + */ + hook_cb->hook_path = NULL; + + return 1; +} + +static int notify_start_failure(struct strbuf *out UNUSED, + void *pp_cb, + void *pp_task_cp UNUSED) +{ + struct hook_cb_data *hook_cb = pp_cb; + + hook_cb->rc |= 1; + + return 1; +} + +static int notify_hook_finished(int result, + struct strbuf *out UNUSED, + void *pp_cb, + void *pp_task_cb UNUSED) +{ + struct hook_cb_data *hook_cb = pp_cb; + struct run_hooks_opt *opt = hook_cb->options; + + hook_cb->rc |= result; + + if (opt->invoked_hook) + *opt->invoked_hook = 1; + + return 0; +} + +static void run_hooks_opt_clear(struct run_hooks_opt *options) +{ + strvec_clear(&options->env); + strvec_clear(&options->args); +} + +int run_hooks_opt(const char *hook_name, struct run_hooks_opt *options) +{ + struct strbuf abs_path = STRBUF_INIT; + struct hook_cb_data cb_data = { + .rc = 0, + .hook_name = hook_name, + .options = options, + }; + const char *const hook_path = find_hook(hook_name); + int ret = 0; + const struct run_process_parallel_opts opts = { + .tr2_category = "hook", + .tr2_label = hook_name, + + .processes = 1, + .ungroup = 1, + + .get_next_task = pick_next_hook, + .start_failure = notify_start_failure, + .task_finished = notify_hook_finished, + + .data = &cb_data, + }; + + if (!options) + BUG("a struct run_hooks_opt must be provided to run_hooks"); + + if (options->invoked_hook) + *options->invoked_hook = 0; + + if (!hook_path && !options->error_if_missing) + goto cleanup; + + if (!hook_path) { + ret = error("cannot find a hook named %s", hook_name); + goto cleanup; + } + + cb_data.hook_path = hook_path; + if (options->dir) { + strbuf_add_absolute_path(&abs_path, hook_path); + cb_data.hook_path = abs_path.buf; + } + + run_processes_parallel(&opts); + ret = cb_data.rc; +cleanup: + strbuf_release(&abs_path); + run_hooks_opt_clear(options); + return ret; +} + +int run_hooks(const char *hook_name) +{ + struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT; + + return run_hooks_opt(hook_name, &opt); +} + +int run_hooks_l(const char *hook_name, ...) +{ + struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT; + va_list ap; + const char *arg; + + va_start(ap, hook_name); + while ((arg = va_arg(ap, const char *))) + strvec_push(&opt.args, arg); + va_end(ap); + + return run_hooks_opt(hook_name, &opt); +} |