#include "cache.h"
#include "cache-tree.h"
+#include "dir.h"
#include "builtin.h"
#include "diff.h"
#include "diffcore.h"
#include "strbuf.h"
#include "utf8.h"
#include "parse-options.h"
+#include "path-list.h"
static const char * const builtin_commit_usage[] = {
"git-commit [options] [--] <filepattern>...",
NULL
};
+static const char * const builtin_status_usage[] = {
+ "git-status [options] [--] <filepattern>...",
+ NULL
+};
+
static unsigned char head_sha1[20], merge_head_sha1[20];
static char *use_message_buffer;
static const char commit_editmsg[] = "COMMIT_EDITMSG";
-static struct lock_file lock_file;
+static struct lock_file index_lock; /* real index */
+static struct lock_file false_lock; /* used only for partial commits */
+static enum {
+ COMMIT_AS_IS = 1,
+ COMMIT_NORMAL,
+ COMMIT_PARTIAL,
+} commit_style;
static char *logfile, *force_author, *template_file;
static char *edit_message, *use_message;
static int all, edit_flag, also, interactive, only, amend, signoff;
-static int quiet, verbose, untracked_files, no_verify;
+static int quiet, verbose, untracked_files, no_verify, allow_empty;
static int no_edit, initial_commit, in_merge;
const char *only_include_assumed;
OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
OPT_BOOLEAN(0, "untracked-files", &untracked_files, "show all untracked files"),
+ OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),
OPT_END()
};
-static char *prepare_index(const char **files, const char *prefix)
+static void rollback_index_files(void)
+{
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ rollback_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ rollback_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+}
+
+static void commit_index_files(void)
+{
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ commit_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ commit_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+}
+
+/*
+ * Take a union of paths in the index and the named tree (typically, "HEAD"),
+ * and return the paths that match the given pattern in list.
+ */
+static int list_paths(struct path_list *list, const char *with_tree,
+ const char *prefix, const char **pattern)
+{
+ int i;
+ char *m;
+
+ for (i = 0; pattern[i]; i++)
+ ;
+ m = xcalloc(1, i);
+
+ if (with_tree)
+ overlay_tree_on_cache(with_tree, prefix);
+
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ if (ce->ce_flags & htons(CE_UPDATE))
+ continue;
+ if (!pathspec_match(pattern, m, ce->name, 0))
+ continue;
+ path_list_insert(ce->name, list);
+ }
+
+ return report_path_error(m, pattern, prefix ? strlen(prefix) : 0);
+}
+
+static void add_remove_files(struct path_list *list)
+{
+ int i;
+ for (i = 0; i < list->nr; i++) {
+ struct path_list_item *p = &(list->items[i]);
+ if (file_exists(p->path))
+ add_file_to_cache(p->path, 0);
+ else
+ remove_file_from_cache(p->path);
+ }
+}
+
+static char *prepare_index(int argc, const char **argv, const char *prefix)
{
int fd;
struct tree *tree;
- struct lock_file *next_index_lock;
+ struct path_list partial;
+ const char **pathspec = NULL;
if (interactive) {
- interactive_add();
+ interactive_add(argc, argv, prefix);
+ commit_style = COMMIT_AS_IS;
return get_index_file();
}
- fd = hold_locked_index(&lock_file, 1);
if (read_cache() < 0)
die("index file corrupt");
- if (all || also) {
- add_files_to_cache(verbose, also ? prefix : NULL, files);
+ if (*argv)
+ pathspec = get_pathspec(prefix, argv);
+
+ /*
+ * Non partial, non as-is commit.
+ *
+ * (1) get the real index;
+ * (2) update the_index as necessary;
+ * (3) write the_index out to the real index (still locked);
+ * (4) return the name of the locked index file.
+ *
+ * The caller should run hooks on the locked real index, and
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index.
+ */
+ if (all || (also && pathspec && *pathspec)) {
+ int fd = hold_locked_index(&index_lock, 1);
+ add_files_to_cache(0, also ? prefix : NULL, pathspec);
refresh_cache(REFRESH_QUIET);
if (write_cache(fd, active_cache, active_nr) || close(fd))
die("unable to write new_index file");
- return lock_file.filename;
+ commit_style = COMMIT_NORMAL;
+ return index_lock.filename;
}
- if (*files == NULL) {
- /* Commit index as-is. */
- rollback_lock_file(&lock_file);
+ /*
+ * As-is commit.
+ *
+ * (1) return the name of the real index file.
+ *
+ * The caller should run hooks on the real index, and run
+ * hooks on the real index, and create commit from the_index.
+ * We still need to refresh the index here.
+ */
+ if (!pathspec || !*pathspec) {
+ fd = hold_locked_index(&index_lock, 1);
+ refresh_cache(REFRESH_QUIET);
+ if (write_cache(fd, active_cache, active_nr) ||
+ close(fd) || commit_locked_index(&index_lock))
+ die("unable to write new_index file");
+ commit_style = COMMIT_AS_IS;
return get_index_file();
}
- /* update the user index file */
- add_files_to_cache(verbose, prefix, files);
+ /*
+ * A partial commit.
+ *
+ * (0) find the set of affected paths;
+ * (1) get lock on the real index file;
+ * (2) update the_index with the given paths;
+ * (3) write the_index out to the real index (still locked);
+ * (4) get lock on the false index file;
+ * (5) reset the_index from HEAD;
+ * (6) update the_index the same way as (2);
+ * (7) write the_index out to the false index file;
+ * (8) return the name of the false index file (still locked);
+ *
+ * The caller should run hooks on the locked false index, and
+ * create commit from it. Then
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index;
+ * In either case, rollback the false index.
+ */
+ commit_style = COMMIT_PARTIAL;
+
+ if (file_exists(git_path("MERGE_HEAD")))
+ die("cannot do a partial commit during a merge.");
+
+ memset(&partial, 0, sizeof(partial));
+ partial.strdup_paths = 1;
+ if (list_paths(&partial, initial_commit ? NULL : "HEAD", prefix, pathspec))
+ exit(1);
+
+ discard_cache();
+ if (read_cache() < 0)
+ die("cannot read the index");
+
+ fd = hold_locked_index(&index_lock, 1);
+ add_remove_files(&partial);
refresh_cache(REFRESH_QUIET);
if (write_cache(fd, active_cache, active_nr) || close(fd))
die("unable to write new_index file");
+ fd = hold_lock_file_for_update(&false_lock,
+ git_path("next-index-%d", getpid()), 1);
+ discard_cache();
if (!initial_commit) {
tree = parse_tree_indirect(head_sha1);
if (!tree)
if (read_tree(tree, 0, NULL))
die("failed to read HEAD tree object");
}
-
- /* Use a lock file to garbage collect the temporary index file. */
- next_index_lock = xmalloc(sizeof(*next_index_lock));
- fd = hold_lock_file_for_update(next_index_lock,
- git_path("next-index-%d", getpid()), 1);
- add_files_to_cache(verbose, prefix, files);
+ add_remove_files(&partial);
refresh_cache(REFRESH_QUIET);
- if (write_cache(fd, active_cache, active_nr) || close(fd))
- die("unable to write new_index file");
- return next_index_lock->filename;
+ if (write_cache(fd, active_cache, active_nr) || close(fd))
+ die("unable to write temporary index file");
+ return false_lock.filename;
}
static int run_status(FILE *fp, const char *index_file, const char *prefix)
static int prepare_log_message(const char *index_file, const char *prefix)
{
struct stat statbuf;
- int commitable;
+ int commitable, saved_color_setting;
struct strbuf sb;
char *buffer;
FILE *fp;
fp = fopen(git_path(commit_editmsg), "w");
if (fp == NULL)
- die("could not open %s\n", git_path(commit_editmsg));
+ die("could not open %s", git_path(commit_editmsg));
stripspace(&sb, 0);
strbuf_init(&sob, 0);
strbuf_addstr(&sob, sign_off_header);
- strbuf_addstr(&sob, fmt_ident(getenv("GIT_COMMITTER_NAME"),
- getenv("GIT_COMMITTER_EMAIL"),
- "", 1));
+ strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
+ getenv("GIT_COMMITTER_EMAIL")));
strbuf_addch(&sob, '\n');
-
for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
; /* do nothing */
if (prefixcmp(sb.buf + i, sob.buf)) {
}
if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
- die("could not write commit template: %s\n",
- strerror(errno));
+ die("could not write commit template: %s", strerror(errno));
strbuf_release(&sb);
+ if (no_edit) {
+ struct rev_info rev;
+ unsigned char sha1[40];
+
+ fclose(fp);
+
+ if (!active_nr && read_cache() < 0)
+ die("Cannot read index");
+
+ if (get_sha1("HEAD", sha1) != 0)
+ return !!active_nr;
+
+ init_revisions(&rev, "");
+ rev.abbrev = 0;
+ setup_revisions(0, NULL, &rev, "HEAD");
+ DIFF_OPT_SET(&rev.diffopt, QUIET);
+ DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
+ run_diff_index(&rev, 1 /* cached */);
+
+ return !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
+ }
+
if (in_merge && !no_edit)
fprintf(fp,
"#\n"
if (only_include_assumed)
fprintf(fp, "# %s\n", only_include_assumed);
+ saved_color_setting = wt_status_use_color;
+ wt_status_use_color = 0;
commitable = run_status(fp, index_file, prefix);
+ wt_status_use_color = saved_color_setting;
fclose(fp);
a = strstr(use_message_buffer, "\nauthor ");
if (!a)
- die("invalid commit: %s\n", use_message);
+ die("invalid commit: %s", use_message);
lb = strstr(a + 8, " <");
rb = strstr(a + 8, "> ");
eol = strchr(a + 8, '\n');
if (!lb || !rb || !eol)
- die("invalid commit: %s\n", use_message);
+ die("invalid commit: %s", use_message);
name = xstrndup(a + 8, lb - (a + 8));
email = xstrndup(lb + 2, rb - (lb + 2));
const char *rb = strchr(force_author, '>');
if (!lb || !rb)
- die("malformed --author parameter\n");
+ die("malformed --author parameter");
name = xstrndup(force_author, lb - force_author);
email = xstrndup(lb + 2, rb - (lb + 2));
}
strbuf_addf(sb, "author %s\n", fmt_ident(name, email, date, 1));
}
-static int parse_and_validate_options(int argc, const char *argv[])
+static int parse_and_validate_options(int argc, const char *argv[],
+ const char * const usage[])
{
int f = 0;
- argc = parse_options(argc, argv, builtin_commit_options,
- builtin_commit_usage, 0);
+ argc = parse_options(argc, argv, builtin_commit_options, usage, 0);
if (logfile || message.len || use_message)
no_edit = 1;
if (amend && initial_commit)
die("You have nothing to amend.");
if (amend && in_merge)
- die("You are in the middle of a merger -- cannot amend.");
+ die("You are in the middle of a merge -- cannot amend.");
if (use_message)
f++;
git_config(git_status_config);
- argc = parse_and_validate_options(argc, argv);
+ argc = parse_and_validate_options(argc, argv, builtin_status_usage);
- index_file = prepare_index(argv, prefix);
+ index_file = prepare_index(argc, argv, prefix);
commitable = run_status(stdout, index_file, prefix);
- rollback_lock_file(&lock_file);
+ rollback_index_files();
return commitable ? 0 : 1;
}
commit = lookup_commit(sha1);
if (!commit)
- die("couldn't look up newly created commit\n");
+ die("couldn't look up newly created commit");
if (!commit || parse_commit(commit))
die("could not parse newly created commit");
return git_status_config(k, v);
}
+static int is_a_merge(const unsigned char *sha1)
+{
+ struct commit *commit = lookup_commit(sha1);
+ if (!commit || parse_commit(commit))
+ die("could not parse HEAD commit");
+ return !!(commit->parents && commit->parents->next);
+}
+
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
int header_len;
struct strbuf sb;
const char *index_file, *reflog_msg;
- char *nl;
+ char *nl, *p;
unsigned char commit_sha1[20];
struct ref_lock *ref_lock;
git_config(git_commit_config);
- argc = parse_and_validate_options(argc, argv);
+ argc = parse_and_validate_options(argc, argv, builtin_commit_usage);
- index_file = prepare_index(argv, prefix);
+ index_file = prepare_index(argc, argv, prefix);
- if (!no_verify && run_hook(index_file, "pre-commit", NULL))
- exit(1);
+ if (!no_verify && run_hook(index_file, "pre-commit", NULL)) {
+ rollback_index_files();
+ return 1;
+ }
- if (!prepare_log_message(index_file, prefix) && !in_merge) {
+ if (!prepare_log_message(index_file, prefix) && !in_merge &&
+ !allow_empty && !(amend && is_a_merge(head_sha1))) {
run_status(stdout, index_file, prefix);
+ rollback_index_files();
unlink(commit_editmsg);
return 1;
}
- strbuf_init(&sb, 0);
-
- /* Start building up the commit header */
+ /*
+ * Re-read the index as pre-commit hook could have updated it,
+ * and write it out as a tree.
+ */
+ discard_cache();
read_cache_from(index_file);
- active_cache_tree = cache_tree();
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
if (cache_tree_update(active_cache_tree,
- active_cache, active_nr, 0, 0) < 0)
+ active_cache, active_nr, 0, 0) < 0) {
+ rollback_index_files();
die("Error building trees");
+ }
+
+ /*
+ * The commit object
+ */
+ strbuf_init(&sb, 0);
strbuf_addf(&sb, "tree %s\n",
sha1_to_hex(active_cache_tree->sha1));
/* Get the commit message and validate it */
header_len = sb.len;
- if (!no_edit)
- launch_editor(git_path(commit_editmsg), &sb);
- else if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0)
- die("could not read commit message\n");
- if (run_hook(index_file, "commit-msg", commit_editmsg))
+ if (!no_edit) {
+ char index[PATH_MAX];
+ const char *env[2] = { index, NULL };
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ launch_editor(git_path(commit_editmsg), &sb, env);
+ } else if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
+ rollback_index_files();
+ die("could not read commit message");
+ }
+ if (run_hook(index_file, "commit-msg", git_path(commit_editmsg))) {
+ rollback_index_files();
exit(1);
+ }
+
+ /* Truncate the message just before the diff, if any. */
+ p = strstr(sb.buf, "\ndiff --git a/");
+ if (p != NULL)
+ strbuf_setlen(&sb, p - sb.buf + 1);
+
stripspace(&sb, 1);
- if (sb.len < header_len ||
- message_is_empty(&sb, header_len))
- die("* no commit message? aborting commit.");
+ if (sb.len < header_len || message_is_empty(&sb, header_len)) {
+ rollback_index_files();
+ die("no commit message? aborting commit.");
+ }
strbuf_addch(&sb, '\0');
if (is_encoding_utf8(git_commit_encoding) && !is_utf8(sb.buf))
fprintf(stderr, commit_utf8_warn);
- if (write_sha1_file(sb.buf, sb.len - 1, commit_type, commit_sha1))
+ if (write_sha1_file(sb.buf, sb.len - 1, commit_type, commit_sha1)) {
+ rollback_index_files();
die("failed to write commit object");
+ }
ref_lock = lock_any_ref_for_update("HEAD",
initial_commit ? NULL : head_sha1,
strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
- if (!ref_lock)
+ if (!ref_lock) {
+ rollback_index_files();
die("cannot lock HEAD ref");
- if (write_ref_sha1(ref_lock, commit_sha1, sb.buf) < 0)
+ }
+ if (write_ref_sha1(ref_lock, commit_sha1, sb.buf) < 0) {
+ rollback_index_files();
die("cannot update HEAD ref");
+ }
unlink(git_path("MERGE_HEAD"));
unlink(git_path("MERGE_MSG"));
- if (lock_file.filename[0] && commit_locked_index(&lock_file))
- die("failed to write new index");
+ commit_index_files();
rerere();
-
- run_hook(index_file, "post-commit", NULL);
-
+ run_hook(get_index_file(), "post-commit", NULL);
if (!quiet)
print_summary(prefix, commit_sha1);