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https://github.com/git/git
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![Linus Torvalds](/assets/img/avatar_default.png)
It makes "git reflog [show]" act as git log -g --pretty=oneline --abbrev-cmit and is fairly straightforward. So you can just write git reflog or git reflog show and it will show you the reflog in a nice format. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
710 lines
18 KiB
C
710 lines
18 KiB
C
/*
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* Builtin "git log" and related commands (show, whatchanged)
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*
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* (C) Copyright 2006 Linus Torvalds
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* 2006 Junio Hamano
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*/
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#include "cache.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "log-tree.h"
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#include "builtin.h"
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#include "tag.h"
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#include "reflog-walk.h"
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static int default_show_root = 1;
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/* this is in builtin-diff.c */
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void add_head(struct rev_info *revs);
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static void cmd_log_init(int argc, const char **argv, const char *prefix,
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struct rev_info *rev)
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{
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int i;
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rev->abbrev = DEFAULT_ABBREV;
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rev->commit_format = CMIT_FMT_DEFAULT;
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rev->verbose_header = 1;
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rev->show_root_diff = default_show_root;
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argc = setup_revisions(argc, argv, rev, "HEAD");
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if (rev->diffopt.pickaxe || rev->diffopt.filter)
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rev->always_show_header = 0;
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strncmp(arg, "--encoding=", 11)) {
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arg += 11;
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if (strcmp(arg, "none"))
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git_log_output_encoding = strdup(arg);
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else
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git_log_output_encoding = "";
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}
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else
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die("unrecognized argument: %s", arg);
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}
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}
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static int cmd_log_walk(struct rev_info *rev)
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{
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struct commit *commit;
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prepare_revision_walk(rev);
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while ((commit = get_revision(rev)) != NULL) {
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log_tree_commit(rev, commit);
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if (!rev->reflog_info) {
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/* we allow cycles in reflog ancestry */
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free(commit->buffer);
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commit->buffer = NULL;
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}
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free_commit_list(commit->parents);
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commit->parents = NULL;
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}
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return 0;
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}
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static int git_log_config(const char *var, const char *value)
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{
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if (!strcmp(var, "log.showroot")) {
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default_show_root = git_config_bool(var, value);
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return 0;
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}
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return git_diff_ui_config(var, value);
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}
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int cmd_whatchanged(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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git_config(git_log_config);
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init_revisions(&rev, prefix);
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rev.diff = 1;
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rev.diffopt.recursive = 1;
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rev.simplify_history = 0;
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cmd_log_init(argc, argv, prefix, &rev);
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if (!rev.diffopt.output_format)
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rev.diffopt.output_format = DIFF_FORMAT_RAW;
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return cmd_log_walk(&rev);
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}
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static int show_object(const unsigned char *sha1, int suppress_header)
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{
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unsigned long size;
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char type[20];
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char *buf = read_sha1_file(sha1, type, &size);
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int offset = 0;
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if (!buf)
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return error("Could not read object %s", sha1_to_hex(sha1));
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if (suppress_header)
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while (offset < size && buf[offset++] != '\n') {
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int new_offset = offset;
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while (new_offset < size && buf[new_offset++] != '\n')
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; /* do nothing */
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offset = new_offset;
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}
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if (offset < size)
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fwrite(buf + offset, size - offset, 1, stdout);
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free(buf);
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return 0;
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}
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static int show_tree_object(const unsigned char *sha1,
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const char *base, int baselen,
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const char *pathname, unsigned mode, int stage)
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{
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printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
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return 0;
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}
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int cmd_show(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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struct object_array_entry *objects;
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int i, count, ret = 0;
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git_config(git_log_config);
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init_revisions(&rev, prefix);
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rev.diff = 1;
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rev.diffopt.recursive = 1;
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rev.combine_merges = 1;
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rev.dense_combined_merges = 1;
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rev.always_show_header = 1;
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rev.ignore_merges = 0;
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rev.no_walk = 1;
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cmd_log_init(argc, argv, prefix, &rev);
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count = rev.pending.nr;
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objects = rev.pending.objects;
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for (i = 0; i < count && !ret; i++) {
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struct object *o = objects[i].item;
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const char *name = objects[i].name;
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switch (o->type) {
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case OBJ_BLOB:
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ret = show_object(o->sha1, 0);
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break;
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case OBJ_TAG: {
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struct tag *t = (struct tag *)o;
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printf("%stag %s%s\n\n",
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diff_get_color(rev.diffopt.color_diff,
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DIFF_COMMIT),
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t->tag,
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diff_get_color(rev.diffopt.color_diff,
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DIFF_RESET));
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ret = show_object(o->sha1, 1);
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objects[i].item = (struct object *)t->tagged;
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i--;
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break;
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}
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case OBJ_TREE:
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printf("%stree %s%s\n\n",
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diff_get_color(rev.diffopt.color_diff,
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DIFF_COMMIT),
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name,
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diff_get_color(rev.diffopt.color_diff,
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DIFF_RESET));
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read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
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show_tree_object);
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break;
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case OBJ_COMMIT:
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rev.pending.nr = rev.pending.alloc = 0;
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rev.pending.objects = NULL;
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add_object_array(o, name, &rev.pending);
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ret = cmd_log_walk(&rev);
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break;
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default:
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ret = error("Unknown type: %d", o->type);
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}
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}
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free(objects);
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return ret;
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}
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/*
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* This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
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*/
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int cmd_log_reflog(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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git_config(git_log_config);
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init_revisions(&rev, prefix);
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init_reflog_walk(&rev.reflog_info);
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rev.abbrev_commit = 1;
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rev.verbose_header = 1;
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cmd_log_init(argc, argv, prefix, &rev);
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/*
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* This means that we override whatever commit format the user gave
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* on the cmd line. Sad, but cmd_log_init() currently doesn't
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* allow us to set a different default.
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*/
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rev.commit_format = CMIT_FMT_ONELINE;
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rev.always_show_header = 1;
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/*
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* We get called through "git reflog", so unlike the other log
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* routines, we need to set up our pager manually..
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*/
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setup_pager();
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return cmd_log_walk(&rev);
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}
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int cmd_log(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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git_config(git_log_config);
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init_revisions(&rev, prefix);
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rev.always_show_header = 1;
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cmd_log_init(argc, argv, prefix, &rev);
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return cmd_log_walk(&rev);
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}
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static int istitlechar(char c)
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{
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return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
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(c >= '0' && c <= '9') || c == '.' || c == '_';
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}
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static char *extra_headers = NULL;
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static int extra_headers_size = 0;
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static const char *fmt_patch_suffix = ".patch";
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static int git_format_config(const char *var, const char *value)
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{
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if (!strcmp(var, "format.headers")) {
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int len;
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if (!value)
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die("format.headers without value");
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len = strlen(value);
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extra_headers_size += len + 1;
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extra_headers = xrealloc(extra_headers, extra_headers_size);
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extra_headers[extra_headers_size - len - 1] = 0;
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strcat(extra_headers, value);
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return 0;
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}
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if (!strcmp(var, "format.suffix")) {
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if (!value)
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die("format.suffix without value");
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fmt_patch_suffix = xstrdup(value);
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return 0;
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}
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if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
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return 0;
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}
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return git_log_config(var, value);
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}
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static FILE *realstdout = NULL;
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static const char *output_directory = NULL;
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static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
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{
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char filename[1024];
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char *sol;
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int len = 0;
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int suffix_len = strlen(fmt_patch_suffix) + 10; /* ., NUL and slop */
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if (output_directory) {
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strlcpy(filename, output_directory, 1000);
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len = strlen(filename);
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if (filename[len - 1] != '/')
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filename[len++] = '/';
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}
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sprintf(filename + len, "%04d", nr);
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len = strlen(filename);
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sol = strstr(commit->buffer, "\n\n");
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if (sol) {
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int j, space = 1;
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sol += 2;
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/* strip [PATCH] or [PATCH blabla] */
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if (!keep_subject && !strncmp(sol, "[PATCH", 6)) {
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char *eos = strchr(sol + 6, ']');
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if (eos) {
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while (isspace(*eos))
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eos++;
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sol = eos;
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}
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}
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for (j = 0;
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len < sizeof(filename) - suffix_len &&
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sol[j] && sol[j] != '\n';
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j++) {
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if (istitlechar(sol[j])) {
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if (space) {
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filename[len++] = '-';
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space = 0;
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}
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filename[len++] = sol[j];
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if (sol[j] == '.')
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while (sol[j + 1] == '.')
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j++;
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} else
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space = 1;
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}
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while (filename[len - 1] == '.' || filename[len - 1] == '-')
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len--;
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}
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strcpy(filename + len, fmt_patch_suffix);
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fprintf(realstdout, "%s\n", filename);
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freopen(filename, "w", stdout);
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}
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static int get_patch_id(struct commit *commit, struct diff_options *options,
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unsigned char *sha1)
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{
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if (commit->parents)
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diff_tree_sha1(commit->parents->item->object.sha1,
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commit->object.sha1, "", options);
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else
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diff_root_tree_sha1(commit->object.sha1, "", options);
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diffcore_std(options);
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return diff_flush_patch_id(options, sha1);
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}
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static void get_patch_ids(struct rev_info *rev, struct diff_options *options, const char *prefix)
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{
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struct rev_info check_rev;
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struct commit *commit;
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struct object *o1, *o2;
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unsigned flags1, flags2;
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unsigned char sha1[20];
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if (rev->pending.nr != 2)
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die("Need exactly one range.");
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o1 = rev->pending.objects[0].item;
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flags1 = o1->flags;
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o2 = rev->pending.objects[1].item;
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flags2 = o2->flags;
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if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
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die("Not a range.");
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diff_setup(options);
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options->recursive = 1;
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if (diff_setup_done(options) < 0)
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die("diff_setup_done failed");
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/* given a range a..b get all patch ids for b..a */
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init_revisions(&check_rev, prefix);
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o1->flags ^= UNINTERESTING;
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o2->flags ^= UNINTERESTING;
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add_pending_object(&check_rev, o1, "o1");
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add_pending_object(&check_rev, o2, "o2");
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prepare_revision_walk(&check_rev);
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while ((commit = get_revision(&check_rev)) != NULL) {
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/* ignore merges */
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if (commit->parents && commit->parents->next)
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continue;
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if (!get_patch_id(commit, options, sha1))
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created_object(sha1, xcalloc(1, sizeof(struct object)));
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}
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/* reset for next revision walk */
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clear_commit_marks((struct commit *)o1,
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SEEN | UNINTERESTING | SHOWN | ADDED);
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clear_commit_marks((struct commit *)o2,
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SEEN | UNINTERESTING | SHOWN | ADDED);
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o1->flags = flags1;
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o2->flags = flags2;
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}
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static void gen_message_id(char *dest, unsigned int length, char *base)
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{
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const char *committer = git_committer_info(-1);
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const char *email_start = strrchr(committer, '<');
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const char *email_end = strrchr(committer, '>');
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if(!email_start || !email_end || email_start > email_end - 1)
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die("Could not extract email from committer identity.");
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snprintf(dest, length, "%s.%lu.git.%.*s", base,
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(unsigned long) time(NULL),
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(int)(email_end - email_start - 1), email_start + 1);
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}
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int cmd_format_patch(int argc, const char **argv, const char *prefix)
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{
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struct commit *commit;
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struct commit **list = NULL;
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struct rev_info rev;
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int nr = 0, total, i, j;
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int use_stdout = 0;
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int numbered = 0;
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int start_number = -1;
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int keep_subject = 0;
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int ignore_if_in_upstream = 0;
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int thread = 0;
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const char *in_reply_to = NULL;
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struct diff_options patch_id_opts;
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char *add_signoff = NULL;
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char message_id[1024];
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char ref_message_id[1024];
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git_config(git_format_config);
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init_revisions(&rev, prefix);
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rev.commit_format = CMIT_FMT_EMAIL;
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rev.verbose_header = 1;
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rev.diff = 1;
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rev.combine_merges = 0;
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rev.ignore_merges = 1;
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rev.diffopt.msg_sep = "";
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rev.diffopt.recursive = 1;
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rev.extra_headers = extra_headers;
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/*
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* Parse the arguments before setup_revisions(), or something
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* like "git fmt-patch -o a123 HEAD^.." may fail; a123 is
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* possibly a valid SHA1.
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*/
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for (i = 1, j = 1; i < argc; i++) {
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if (!strcmp(argv[i], "--stdout"))
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use_stdout = 1;
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else if (!strcmp(argv[i], "-n") ||
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!strcmp(argv[i], "--numbered"))
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numbered = 1;
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else if (!strncmp(argv[i], "--start-number=", 15))
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start_number = strtol(argv[i] + 15, NULL, 10);
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else if (!strcmp(argv[i], "--start-number")) {
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i++;
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if (i == argc)
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die("Need a number for --start-number");
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start_number = strtol(argv[i], NULL, 10);
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}
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else if (!strcmp(argv[i], "-k") ||
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!strcmp(argv[i], "--keep-subject")) {
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keep_subject = 1;
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rev.total = -1;
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}
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else if (!strcmp(argv[i], "--output-directory") ||
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!strcmp(argv[i], "-o")) {
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i++;
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if (argc <= i)
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die("Which directory?");
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if (output_directory)
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die("Two output directories?");
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output_directory = argv[i];
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}
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else if (!strcmp(argv[i], "--signoff") ||
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!strcmp(argv[i], "-s")) {
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const char *committer;
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const char *endpos;
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committer = git_committer_info(1);
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endpos = strchr(committer, '>');
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if (!endpos)
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die("bogos committer info %s\n", committer);
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add_signoff = xmalloc(endpos - committer + 2);
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memcpy(add_signoff, committer, endpos - committer + 1);
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add_signoff[endpos - committer + 1] = 0;
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}
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else if (!strcmp(argv[i], "--attach"))
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rev.mime_boundary = git_version_string;
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else if (!strncmp(argv[i], "--attach=", 9))
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rev.mime_boundary = argv[i] + 9;
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else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
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ignore_if_in_upstream = 1;
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else if (!strcmp(argv[i], "--thread"))
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thread = 1;
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else if (!strncmp(argv[i], "--in-reply-to=", 14))
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in_reply_to = argv[i] + 14;
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else if (!strcmp(argv[i], "--in-reply-to")) {
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i++;
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if (i == argc)
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die("Need a Message-Id for --in-reply-to");
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in_reply_to = argv[i];
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}
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else if (!strncmp(argv[i], "--suffix=", 9))
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fmt_patch_suffix = argv[i] + 9;
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else
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argv[j++] = argv[i];
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}
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argc = j;
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if (start_number < 0)
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start_number = 1;
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if (numbered && keep_subject)
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die ("-n and -k are mutually exclusive.");
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argc = setup_revisions(argc, argv, &rev, "HEAD");
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if (argc > 1)
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die ("unrecognized argument: %s", argv[1]);
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if (!rev.diffopt.output_format)
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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)
|
|
reopen_stdout(commit, rev.nr, keep_subject);
|
|
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;
|
|
}
|