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-rw-r--r--builtin-log.c735
1 files changed, 735 insertions, 0 deletions
diff --git a/builtin-log.c b/builtin-log.c
new file mode 100644
index 0000000000..71df957eaa
--- /dev/null
+++ b/builtin-log.c
@@ -0,0 +1,735 @@
+/*
+ * Builtin "git log" and related commands (show, whatchanged)
+ *
+ * (C) Copyright 2006 Linus Torvalds
+ * 2006 Junio Hamano
+ */
+#include "cache.h"
+#include "commit.h"
+#include "diff.h"
+#include "revision.h"
+#include "log-tree.h"
+#include "builtin.h"
+#include "tag.h"
+#include "reflog-walk.h"
+
+static int default_show_root = 1;
+
+/* this is in builtin-diff.c */
+void add_head(struct rev_info *revs);
+
+static void cmd_log_init(int argc, const char **argv, const char *prefix,
+ struct rev_info *rev)
+{
+ int i;
+
+ rev->abbrev = DEFAULT_ABBREV;
+ rev->commit_format = CMIT_FMT_DEFAULT;
+ rev->verbose_header = 1;
+ rev->show_root_diff = default_show_root;
+ argc = setup_revisions(argc, argv, rev, "HEAD");
+ if (rev->diffopt.pickaxe || rev->diffopt.filter)
+ rev->always_show_header = 0;
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+ if (!prefixcmp(arg, "--encoding=")) {
+ arg += 11;
+ if (strcmp(arg, "none"))
+ git_log_output_encoding = xstrdup(arg);
+ else
+ git_log_output_encoding = "";
+ }
+ else
+ die("unrecognized argument: %s", arg);
+ }
+}
+
+static int cmd_log_walk(struct rev_info *rev)
+{
+ struct commit *commit;
+
+ prepare_revision_walk(rev);
+ while ((commit = get_revision(rev)) != NULL) {
+ log_tree_commit(rev, commit);
+ if (!rev->reflog_info) {
+ /* we allow cycles in reflog ancestry */
+ free(commit->buffer);
+ commit->buffer = NULL;
+ }
+ free_commit_list(commit->parents);
+ commit->parents = NULL;
+ }
+ return 0;
+}
+
+static int git_log_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "log.showroot")) {
+ default_show_root = git_config_bool(var, value);
+ return 0;
+ }
+ return git_diff_ui_config(var, value);
+}
+
+int cmd_whatchanged(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+
+ git_config(git_log_config);
+ init_revisions(&rev, prefix);
+ rev.diff = 1;
+ rev.diffopt.recursive = 1;
+ rev.simplify_history = 0;
+ cmd_log_init(argc, argv, prefix, &rev);
+ if (!rev.diffopt.output_format)
+ rev.diffopt.output_format = DIFF_FORMAT_RAW;
+ return cmd_log_walk(&rev);
+}
+
+static int show_object(const unsigned char *sha1, int suppress_header)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buf = read_sha1_file(sha1, &type, &size);
+ int offset = 0;
+
+ if (!buf)
+ return error("Could not read object %s", sha1_to_hex(sha1));
+
+ if (suppress_header)
+ while (offset < size && buf[offset++] != '\n') {
+ int new_offset = offset;
+ while (new_offset < size && buf[new_offset++] != '\n')
+ ; /* do nothing */
+ offset = new_offset;
+ }
+
+ if (offset < size)
+ fwrite(buf + offset, size - offset, 1, stdout);
+ free(buf);
+ return 0;
+}
+
+static int show_tree_object(const unsigned char *sha1,
+ const char *base, int baselen,
+ const char *pathname, unsigned mode, int stage)
+{
+ printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
+ return 0;
+}
+
+int cmd_show(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+ struct object_array_entry *objects;
+ int i, count, ret = 0;
+
+ git_config(git_log_config);
+ init_revisions(&rev, prefix);
+ rev.diff = 1;
+ rev.diffopt.recursive = 1;
+ rev.combine_merges = 1;
+ rev.dense_combined_merges = 1;
+ rev.always_show_header = 1;
+ rev.ignore_merges = 0;
+ rev.no_walk = 1;
+ cmd_log_init(argc, argv, prefix, &rev);
+
+ count = rev.pending.nr;
+ objects = rev.pending.objects;
+ for (i = 0; i < count && !ret; i++) {
+ struct object *o = objects[i].item;
+ const char *name = objects[i].name;
+ switch (o->type) {
+ case OBJ_BLOB:
+ ret = show_object(o->sha1, 0);
+ break;
+ case OBJ_TAG: {
+ struct tag *t = (struct tag *)o;
+
+ printf("%stag %s%s\n\n",
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_COMMIT),
+ t->tag,
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_RESET));
+ ret = show_object(o->sha1, 1);
+ objects[i].item = (struct object *)t->tagged;
+ i--;
+ break;
+ }
+ case OBJ_TREE:
+ printf("%stree %s%s\n\n",
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_COMMIT),
+ name,
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_RESET));
+ read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
+ show_tree_object);
+ break;
+ case OBJ_COMMIT:
+ rev.pending.nr = rev.pending.alloc = 0;
+ rev.pending.objects = NULL;
+ add_object_array(o, name, &rev.pending);
+ ret = cmd_log_walk(&rev);
+ break;
+ default:
+ ret = error("Unknown type: %d", o->type);
+ }
+ }
+ free(objects);
+ return ret;
+}
+
+/*
+ * This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
+ */
+int cmd_log_reflog(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+
+ git_config(git_log_config);
+ init_revisions(&rev, prefix);
+ init_reflog_walk(&rev.reflog_info);
+ rev.abbrev_commit = 1;
+ rev.verbose_header = 1;
+ cmd_log_init(argc, argv, prefix, &rev);
+
+ /*
+ * This means that we override whatever commit format the user gave
+ * on the cmd line. Sad, but cmd_log_init() currently doesn't
+ * allow us to set a different default.
+ */
+ rev.commit_format = CMIT_FMT_ONELINE;
+ rev.always_show_header = 1;
+
+ /*
+ * We get called through "git reflog", so unlike the other log
+ * routines, we need to set up our pager manually..
+ */
+ setup_pager();
+
+ return cmd_log_walk(&rev);
+}
+
+int cmd_log(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+
+ git_config(git_log_config);
+ init_revisions(&rev, prefix);
+ rev.always_show_header = 1;
+ cmd_log_init(argc, argv, prefix, &rev);
+ return cmd_log_walk(&rev);
+}
+
+/* format-patch */
+#define FORMAT_PATCH_NAME_MAX 64
+
+static int istitlechar(char c)
+{
+ return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
+ (c >= '0' && c <= '9') || c == '.' || c == '_';
+}
+
+static char *extra_headers = NULL;
+static int extra_headers_size = 0;
+static const char *fmt_patch_suffix = ".patch";
+
+static int git_format_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "format.headers")) {
+ int len;
+
+ if (!value)
+ die("format.headers without value");
+ len = strlen(value);
+ extra_headers_size += len + 1;
+ extra_headers = xrealloc(extra_headers, extra_headers_size);
+ extra_headers[extra_headers_size - len - 1] = 0;
+ strcat(extra_headers, value);
+ return 0;
+ }
+ if (!strcmp(var, "format.suffix")) {
+ if (!value)
+ die("format.suffix without value");
+ fmt_patch_suffix = xstrdup(value);
+ return 0;
+ }
+ if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
+ return 0;
+ }
+ return git_log_config(var, value);
+}
+
+
+static FILE *realstdout = NULL;
+static const char *output_directory = NULL;
+
+static int reopen_stdout(struct commit *commit, int nr, int keep_subject)
+{
+ char filename[PATH_MAX];
+ char *sol;
+ int len = 0;
+ int suffix_len = strlen(fmt_patch_suffix) + 1;
+
+ if (output_directory) {
+ if (strlen(output_directory) >=
+ sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
+ return error("name of output directory is too long");
+ strlcpy(filename, output_directory, sizeof(filename) - suffix_len);
+ len = strlen(filename);
+ if (filename[len - 1] != '/')
+ filename[len++] = '/';
+ }
+
+ sprintf(filename + len, "%04d", nr);
+ len = strlen(filename);
+
+ sol = strstr(commit->buffer, "\n\n");
+ if (sol) {
+ int j, space = 1;
+
+ sol += 2;
+ /* strip [PATCH] or [PATCH blabla] */
+ if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
+ char *eos = strchr(sol + 6, ']');
+ if (eos) {
+ while (isspace(*eos))
+ eos++;
+ sol = eos;
+ }
+ }
+
+ for (j = 0;
+ j < FORMAT_PATCH_NAME_MAX - suffix_len - 5 &&
+ len < sizeof(filename) - suffix_len &&
+ sol[j] && sol[j] != '\n';
+ j++) {
+ if (istitlechar(sol[j])) {
+ if (space) {
+ filename[len++] = '-';
+ space = 0;
+ }
+ filename[len++] = sol[j];
+ if (sol[j] == '.')
+ while (sol[j + 1] == '.')
+ j++;
+ } else
+ space = 1;
+ }
+ while (filename[len - 1] == '.' || filename[len - 1] == '-')
+ len--;
+ filename[len] = 0;
+ }
+ if (len + suffix_len >= sizeof(filename))
+ return error("Patch pathname too long");
+ strcpy(filename + len, fmt_patch_suffix);
+ fprintf(realstdout, "%s\n", filename);
+ if (freopen(filename, "w", stdout) == NULL)
+ return error("Cannot open patch file %s",filename);
+ return 0;
+
+}
+
+static int get_patch_id(struct commit *commit, struct diff_options *options,
+ unsigned char *sha1)
+{
+ if (commit->parents)
+ diff_tree_sha1(commit->parents->item->object.sha1,
+ commit->object.sha1, "", options);
+ else
+ diff_root_tree_sha1(commit->object.sha1, "", options);
+ diffcore_std(options);
+ return diff_flush_patch_id(options, sha1);
+}
+
+static void get_patch_ids(struct rev_info *rev, struct diff_options *options, const char *prefix)
+{
+ struct rev_info check_rev;
+ struct commit *commit;
+ struct object *o1, *o2;
+ unsigned flags1, flags2;
+ unsigned char sha1[20];
+
+ if (rev->pending.nr != 2)
+ die("Need exactly one range.");
+
+ o1 = rev->pending.objects[0].item;
+ flags1 = o1->flags;
+ o2 = rev->pending.objects[1].item;
+ flags2 = o2->flags;
+
+ if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
+ die("Not a range.");
+
+ diff_setup(options);
+ options->recursive = 1;
+ if (diff_setup_done(options) < 0)
+ die("diff_setup_done failed");
+
+ /* given a range a..b get all patch ids for b..a */
+ init_revisions(&check_rev, prefix);
+ o1->flags ^= UNINTERESTING;
+ o2->flags ^= UNINTERESTING;
+ add_pending_object(&check_rev, o1, "o1");
+ add_pending_object(&check_rev, o2, "o2");
+ prepare_revision_walk(&check_rev);
+
+ while ((commit = get_revision(&check_rev)) != NULL) {
+ /* ignore merges */
+ if (commit->parents && commit->parents->next)
+ continue;
+
+ if (!get_patch_id(commit, options, sha1))
+ created_object(sha1, xcalloc(1, sizeof(struct object)));
+ }
+
+ /* reset for next revision walk */
+ clear_commit_marks((struct commit *)o1,
+ SEEN | UNINTERESTING | SHOWN | ADDED);
+ clear_commit_marks((struct commit *)o2,
+ SEEN | UNINTERESTING | SHOWN | ADDED);
+ o1->flags = flags1;
+ o2->flags = flags2;
+}
+
+static void gen_message_id(char *dest, unsigned int length, char *base)
+{
+ const char *committer = git_committer_info(-1);
+ const char *email_start = strrchr(committer, '<');
+ const char *email_end = strrchr(committer, '>');
+ if(!email_start || !email_end || email_start > email_end - 1)
+ die("Could not extract email from committer identity.");
+ snprintf(dest, length, "%s.%lu.git.%.*s", base,
+ (unsigned long) time(NULL),
+ (int)(email_end - email_start - 1), email_start + 1);
+}
+
+int cmd_format_patch(int argc, const char **argv, const char *prefix)
+{
+ struct commit *commit;
+ struct commit **list = NULL;
+ struct rev_info rev;
+ int nr = 0, total, i, j;
+ int use_stdout = 0;
+ int numbered = 0;
+ int start_number = -1;
+ int keep_subject = 0;
+ int ignore_if_in_upstream = 0;
+ int thread = 0;
+ const char *in_reply_to = NULL;
+ struct diff_options patch_id_opts;
+ char *add_signoff = NULL;
+ char message_id[1024];
+ char ref_message_id[1024];
+
+ git_config(git_format_config);
+ init_revisions(&rev, prefix);
+ rev.commit_format = CMIT_FMT_EMAIL;
+ rev.verbose_header = 1;
+ rev.diff = 1;
+ rev.combine_merges = 0;
+ rev.ignore_merges = 1;
+ rev.diffopt.msg_sep = "";
+ rev.diffopt.recursive = 1;
+
+ rev.extra_headers = extra_headers;
+
+ /*
+ * Parse the arguments before setup_revisions(), or something
+ * like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
+ * possibly a valid SHA1.
+ */
+ for (i = 1, j = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "--stdout"))
+ use_stdout = 1;
+ else if (!strcmp(argv[i], "-n") ||
+ !strcmp(argv[i], "--numbered"))
+ numbered = 1;
+ else if (!prefixcmp(argv[i], "--start-number="))
+ start_number = strtol(argv[i] + 15, NULL, 10);
+ else if (!strcmp(argv[i], "--start-number")) {
+ i++;
+ if (i == argc)
+ die("Need a number for --start-number");
+ start_number = strtol(argv[i], NULL, 10);
+ }
+ else if (!strcmp(argv[i], "-k") ||
+ !strcmp(argv[i], "--keep-subject")) {
+ keep_subject = 1;
+ rev.total = -1;
+ }
+ else if (!strcmp(argv[i], "--output-directory") ||
+ !strcmp(argv[i], "-o")) {
+ i++;
+ if (argc <= i)
+ die("Which directory?");
+ if (output_directory)
+ die("Two output directories?");
+ output_directory = argv[i];
+ }
+ else if (!strcmp(argv[i], "--signoff") ||
+ !strcmp(argv[i], "-s")) {
+ const char *committer;
+ const char *endpos;
+ committer = git_committer_info(1);
+ endpos = strchr(committer, '>');
+ if (!endpos)
+ die("bogos committer info %s\n", committer);
+ add_signoff = xmalloc(endpos - committer + 2);
+ memcpy(add_signoff, committer, endpos - committer + 1);
+ add_signoff[endpos - committer + 1] = 0;
+ }
+ else if (!strcmp(argv[i], "--attach")) {
+ rev.mime_boundary = git_version_string;
+ rev.no_inline = 1;
+ }
+ else if (!prefixcmp(argv[i], "--attach=")) {
+ rev.mime_boundary = argv[i] + 9;
+ rev.no_inline = 1;
+ }
+ else if (!strcmp(argv[i], "--inline")) {
+ rev.mime_boundary = git_version_string;
+ rev.no_inline = 0;
+ }
+ else if (!prefixcmp(argv[i], "--inline=")) {
+ rev.mime_boundary = argv[i] + 9;
+ rev.no_inline = 0;
+ }
+ else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
+ ignore_if_in_upstream = 1;
+ else if (!strcmp(argv[i], "--thread"))
+ thread = 1;
+ else if (!prefixcmp(argv[i], "--in-reply-to="))
+ in_reply_to = argv[i] + 14;
+ else if (!strcmp(argv[i], "--in-reply-to")) {
+ i++;
+ if (i == argc)
+ die("Need a Message-Id for --in-reply-to");
+ in_reply_to = argv[i];
+ }
+ else if (!prefixcmp(argv[i], "--suffix="))
+ fmt_patch_suffix = argv[i] + 9;
+ else
+ argv[j++] = argv[i];
+ }
+ argc = j;
+
+ if (start_number < 0)
+ start_number = 1;
+ if (numbered && keep_subject)
+ die ("-n and -k are mutually exclusive.");
+
+ argc = setup_revisions(argc, argv, &rev, "HEAD");
+ if (argc > 1)
+ die ("unrecognized argument: %s", argv[1]);
+
+ if (!rev.diffopt.output_format)
+ rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
+
+ if (!rev.diffopt.text)
+ rev.diffopt.binary = 1;
+
+ if (!output_directory && !use_stdout)
+ output_directory = prefix;
+
+ if (output_directory) {
+ if (use_stdout)
+ die("standard output, or directory, which one?");
+ if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
+ die("Could not create directory %s",
+ output_directory);
+ }
+
+ if (rev.pending.nr == 1) {
+ if (rev.max_count < 0) {
+ rev.pending.objects[0].item->flags |= UNINTERESTING;
+ add_head(&rev);
+ }
+ /* Otherwise, it is "format-patch -22 HEAD", and
+ * get_revision() would return only the specified count.
+ */
+ }
+
+ if (ignore_if_in_upstream)
+ get_patch_ids(&rev, &patch_id_opts, prefix);
+
+ if (!use_stdout)
+ realstdout = fdopen(dup(1), "w");
+
+ prepare_revision_walk(&rev);
+ while ((commit = get_revision(&rev)) != NULL) {
+ unsigned char sha1[20];
+
+ /* ignore merges */
+ if (commit->parents && commit->parents->next)
+ continue;
+
+ if (ignore_if_in_upstream &&
+ !get_patch_id(commit, &patch_id_opts, sha1) &&
+ lookup_object(sha1))
+ continue;
+
+ nr++;
+ list = xrealloc(list, nr * sizeof(list[0]));
+ list[nr - 1] = commit;
+ }
+ total = nr;
+ if (numbered)
+ rev.total = total + start_number - 1;
+ rev.add_signoff = add_signoff;
+ rev.ref_message_id = in_reply_to;
+ while (0 <= --nr) {
+ int shown;
+ commit = list[nr];
+ rev.nr = total - nr + (start_number - 1);
+ /* Make the second and subsequent mails replies to the first */
+ if (thread) {
+ if (nr == (total - 2)) {
+ strncpy(ref_message_id, message_id,
+ sizeof(ref_message_id));
+ ref_message_id[sizeof(ref_message_id)-1]='\0';
+ rev.ref_message_id = ref_message_id;
+ }
+ gen_message_id(message_id, sizeof(message_id),
+ sha1_to_hex(commit->object.sha1));
+ rev.message_id = message_id;
+ }
+ if (!use_stdout)
+ if (reopen_stdout(commit, rev.nr, keep_subject))
+ die("Failed to create output files");
+ shown = log_tree_commit(&rev, commit);
+ free(commit->buffer);
+ commit->buffer = NULL;
+
+ /* We put one extra blank line between formatted
+ * patches and this flag is used by log-tree code
+ * to see if it needs to emit a LF before showing
+ * the log; when using one file per patch, we do
+ * not want the extra blank line.
+ */
+ if (!use_stdout)
+ rev.shown_one = 0;
+ if (shown) {
+ if (rev.mime_boundary)
+ printf("\n--%s%s--\n\n\n",
+ mime_boundary_leader,
+ rev.mime_boundary);
+ else
+ printf("-- \n%s\n\n", git_version_string);
+ }
+ if (!use_stdout)
+ fclose(stdout);
+ }
+ free(list);
+ return 0;
+}
+
+static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
+{
+ unsigned char sha1[20];
+ if (get_sha1(arg, sha1) == 0) {
+ struct commit *commit = lookup_commit_reference(sha1);
+ if (commit) {
+ commit->object.flags |= flags;
+ add_pending_object(revs, &commit->object, arg);
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static const char cherry_usage[] =
+"git-cherry [-v] <upstream> [<head>] [<limit>]";
+int cmd_cherry(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info revs;
+ struct diff_options patch_id_opts;
+ struct commit *commit;
+ struct commit_list *list = NULL;
+ const char *upstream;
+ const char *head = "HEAD";
+ const char *limit = NULL;
+ int verbose = 0;
+
+ if (argc > 1 && !strcmp(argv[1], "-v")) {
+ verbose = 1;
+ argc--;
+ argv++;
+ }
+
+ switch (argc) {
+ case 4:
+ limit = argv[3];
+ /* FALLTHROUGH */
+ case 3:
+ head = argv[2];
+ /* FALLTHROUGH */
+ case 2:
+ upstream = argv[1];
+ break;
+ default:
+ usage(cherry_usage);
+ }
+
+ init_revisions(&revs, prefix);
+ revs.diff = 1;
+ revs.combine_merges = 0;
+ revs.ignore_merges = 1;
+ revs.diffopt.recursive = 1;
+
+ if (add_pending_commit(head, &revs, 0))
+ die("Unknown commit %s", head);
+ if (add_pending_commit(upstream, &revs, UNINTERESTING))
+ die("Unknown commit %s", upstream);
+
+ /* Don't say anything if head and upstream are the same. */
+ if (revs.pending.nr == 2) {
+ struct object_array_entry *o = revs.pending.objects;
+ if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
+ return 0;
+ }
+
+ get_patch_ids(&revs, &patch_id_opts, prefix);
+
+ if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
+ die("Unknown commit %s", limit);
+
+ /* reverse the list of commits */
+ prepare_revision_walk(&revs);
+ while ((commit = get_revision(&revs)) != NULL) {
+ /* ignore merges */
+ if (commit->parents && commit->parents->next)
+ continue;
+
+ commit_list_insert(commit, &list);
+ }
+
+ while (list) {
+ unsigned char sha1[20];
+ char sign = '+';
+
+ commit = list->item;
+ if (!get_patch_id(commit, &patch_id_opts, sha1) &&
+ lookup_object(sha1))
+ sign = '-';
+
+ if (verbose) {
+ static char buf[16384];
+ pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
+ buf, sizeof(buf), 0, NULL, NULL, 0);
+ printf("%c %s %s\n", sign,
+ sha1_to_hex(commit->object.sha1), buf);
+ }
+ else {
+ printf("%c %s\n", sign,
+ sha1_to_hex(commit->object.sha1));
+ }
+
+ list = list->next;
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 17:31:50 +0000