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-rw-r--r--builtin-revert.c402
1 files changed, 0 insertions, 402 deletions
diff --git a/builtin-revert.c b/builtin-revert.c
deleted file mode 100644
index 499bbe7343..0000000000
--- a/builtin-revert.c
+++ /dev/null
@@ -1,402 +0,0 @@
-#include "cache.h"
-#include "builtin.h"
-#include "object.h"
-#include "commit.h"
-#include "tag.h"
-#include "wt-status.h"
-#include "run-command.h"
-#include "exec_cmd.h"
-#include "utf8.h"
-
-/*
- * This implements the builtins revert and cherry-pick.
- *
- * Copyright (c) 2007 Johannes E. Schindelin
- *
- * Based on git-revert.sh, which is
- *
- * Copyright (c) 2005 Linus Torvalds
- * Copyright (c) 2005 Junio C Hamano
- */
-
-static const char *revert_usage = "git-revert [--edit | --no-edit] [-n] <commit-ish>";
-
-static const char *cherry_pick_usage = "git-cherry-pick [--edit] [-n] [-r] [-x] <commit-ish>";
-
-static int edit;
-static int replay;
-static enum { REVERT, CHERRY_PICK } action;
-static int no_commit;
-static struct commit *commit;
-static int needed_deref;
-
-static const char *me;
-
-#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-
-static void parse_options(int argc, const char **argv)
-{
- const char *usage_str = action == REVERT ?
- revert_usage : cherry_pick_usage;
- unsigned char sha1[20];
- const char *arg;
- int i;
-
- if (argc < 2)
- usage(usage_str);
-
- for (i = 1; i < argc; i++) {
- arg = argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "-n") || !strcmp(arg, "--no-commit"))
- no_commit = 1;
- else if (!strcmp(arg, "-e") || !strcmp(arg, "--edit"))
- edit = 1;
- else if (!strcmp(arg, "--no-edit"))
- edit = 0;
- else if (!strcmp(arg, "-x") || !strcmp(arg, "--i-really-want-"
- "to-expose-my-private-commit-object-name"))
- replay = 0;
- else if (strcmp(arg, "-r"))
- usage(usage_str);
- }
- if (i != argc - 1)
- usage(usage_str);
- arg = argv[argc - 1];
- if (get_sha1(arg, sha1))
- die ("Cannot find '%s'", arg);
- commit = (struct commit *)parse_object(sha1);
- if (!commit)
- die ("Could not find %s", sha1_to_hex(sha1));
- if (commit->object.type == OBJ_TAG) {
- commit = (struct commit *)
- deref_tag((struct object *)commit, arg, strlen(arg));
- needed_deref = 1;
- }
- if (commit->object.type != OBJ_COMMIT)
- die ("'%s' does not point to a commit", arg);
-}
-
-static char *get_oneline(const char *message)
-{
- char *result;
- const char *p = message, *abbrev, *eol;
- int abbrev_len, oneline_len;
-
- if (!p)
- die ("Could not read commit message of %s",
- sha1_to_hex(commit->object.sha1));
- while (*p && (*p != '\n' || p[1] != '\n'))
- p++;
-
- if (*p) {
- p += 2;
- for (eol = p + 1; *eol && *eol != '\n'; eol++)
- ; /* do nothing */
- } else
- eol = p;
- abbrev = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
- abbrev_len = strlen(abbrev);
- oneline_len = eol - p;
- result = xmalloc(abbrev_len + 5 + oneline_len);
- memcpy(result, abbrev, abbrev_len);
- memcpy(result + abbrev_len, "... ", 4);
- memcpy(result + abbrev_len + 4, p, oneline_len);
- result[abbrev_len + 4 + oneline_len] = '\0';
- return result;
-}
-
-static char *get_encoding(const char *message)
-{
- const char *p = message, *eol;
-
- if (!p)
- die ("Could not read commit message of %s",
- sha1_to_hex(commit->object.sha1));
- while (*p && *p != '\n') {
- for (eol = p + 1; *eol && *eol != '\n'; eol++)
- ; /* do nothing */
- if (!prefixcmp(p, "encoding ")) {
- char *result = xmalloc(eol - 8 - p);
- strlcpy(result, p + 9, eol - 8 - p);
- return result;
- }
- p = eol;
- if (*p == '\n')
- p++;
- }
- return NULL;
-}
-
-static struct lock_file msg_file;
-static int msg_fd;
-
-static void add_to_msg(const char *string)
-{
- int len = strlen(string);
- if (write_in_full(msg_fd, string, len) < 0)
- die ("Could not write to MERGE_MSG");
-}
-
-static void add_message_to_msg(const char *message)
-{
- const char *p = message;
- while (*p && (*p != '\n' || p[1] != '\n'))
- p++;
-
- if (!*p)
- add_to_msg(sha1_to_hex(commit->object.sha1));
-
- p += 2;
- add_to_msg(p);
- return;
-}
-
-static void set_author_ident_env(const char *message)
-{
- const char *p = message;
- if (!p)
- die ("Could not read commit message of %s",
- sha1_to_hex(commit->object.sha1));
- while (*p && *p != '\n') {
- const char *eol;
-
- for (eol = p; *eol && *eol != '\n'; eol++)
- ; /* do nothing */
- if (!prefixcmp(p, "author ")) {
- char *line, *pend, *email, *timestamp;
-
- p += 7;
- line = xmalloc(eol + 1 - p);
- memcpy(line, p, eol - p);
- line[eol - p] = '\0';
- email = strchr(line, '<');
- if (!email)
- die ("Could not extract author email from %s",
- sha1_to_hex(commit->object.sha1));
- if (email == line)
- pend = line;
- else
- for (pend = email; pend != line + 1 &&
- isspace(pend[-1]); pend--);
- ; /* do nothing */
- *pend = '\0';
- email++;
- timestamp = strchr(email, '>');
- if (!timestamp)
- die ("Could not extract author email from %s",
- sha1_to_hex(commit->object.sha1));
- *timestamp = '\0';
- for (timestamp++; *timestamp && isspace(*timestamp);
- timestamp++)
- ; /* do nothing */
- setenv("GIT_AUTHOR_NAME", line, 1);
- setenv("GIT_AUTHOR_EMAIL", email, 1);
- setenv("GIT_AUTHOR_DATE", timestamp, 1);
- free(line);
- return;
- }
- p = eol;
- if (*p == '\n')
- p++;
- }
- die ("No author information found in %s",
- sha1_to_hex(commit->object.sha1));
-}
-
-static int merge_recursive(const char *base_sha1,
- const char *head_sha1, const char *head_name,
- const char *next_sha1, const char *next_name)
-{
- char buffer[256];
- const char *argv[6];
-
- sprintf(buffer, "GITHEAD_%s", head_sha1);
- setenv(buffer, head_name, 1);
- sprintf(buffer, "GITHEAD_%s", next_sha1);
- setenv(buffer, next_name, 1);
-
- /*
- * This three way merge is an interesting one. We are at
- * $head, and would want to apply the change between $commit
- * and $prev on top of us (when reverting), or the change between
- * $prev and $commit on top of us (when cherry-picking or replaying).
- */
- argv[0] = "merge-recursive";
- argv[1] = base_sha1;
- argv[2] = "--";
- argv[3] = head_sha1;
- argv[4] = next_sha1;
- argv[5] = NULL;
-
- return run_command_v_opt(argv, RUN_COMMAND_NO_STDIN | RUN_GIT_CMD);
-}
-
-static int revert_or_cherry_pick(int argc, const char **argv)
-{
- unsigned char head[20];
- struct commit *base, *next;
- int i;
- char *oneline, *reencoded_message = NULL;
- const char *message, *encoding;
- const char *defmsg = xstrdup(git_path("MERGE_MSG"));
-
- git_config(git_default_config);
- me = action == REVERT ? "revert" : "cherry-pick";
- setenv(GIT_REFLOG_ACTION, me, 0);
- parse_options(argc, argv);
-
- /* this is copied from the shell script, but it's never triggered... */
- if (action == REVERT && replay)
- die("revert is incompatible with replay");
-
- if (no_commit) {
- /*
- * We do not intend to commit immediately. We just want to
- * merge the differences in.
- */
- if (write_tree(head, 0, NULL))
- die ("Your index file is unmerged.");
- } else {
- struct wt_status s;
-
- if (get_sha1("HEAD", head))
- die ("You do not have a valid HEAD");
- wt_status_prepare(&s);
- if (s.commitable || s.workdir_dirty)
- die ("Dirty index: cannot %s", me);
- discard_cache();
- }
-
- if (!commit->parents)
- die ("Cannot %s a root commit", me);
- if (commit->parents->next)
- die ("Cannot %s a multi-parent commit.", me);
- if (!(message = commit->buffer))
- die ("Cannot get commit message for %s",
- sha1_to_hex(commit->object.sha1));
-
- /*
- * "commit" is an existing commit. We would want to apply
- * the difference it introduces since its first parent "prev"
- * on top of the current HEAD if we are cherry-pick. Or the
- * reverse of it if we are revert.
- */
-
- msg_fd = hold_lock_file_for_update(&msg_file, defmsg, 1);
-
- encoding = get_encoding(message);
- if (!encoding)
- encoding = "utf-8";
- if (!git_commit_encoding)
- git_commit_encoding = "utf-8";
- if ((reencoded_message = reencode_string(message,
- git_commit_encoding, encoding)))
- message = reencoded_message;
-
- oneline = get_oneline(message);
-
- if (action == REVERT) {
- char *oneline_body = strchr(oneline, ' ');
-
- base = commit;
- next = commit->parents->item;
- add_to_msg("Revert \"");
- add_to_msg(oneline_body + 1);
- add_to_msg("\"\n\nThis reverts commit ");
- add_to_msg(sha1_to_hex(commit->object.sha1));
- add_to_msg(".\n");
- } else {
- base = commit->parents->item;
- next = commit;
- set_author_ident_env(message);
- add_message_to_msg(message);
- if (!replay) {
- add_to_msg("(cherry picked from commit ");
- add_to_msg(sha1_to_hex(commit->object.sha1));
- add_to_msg(")\n");
- }
- }
- if (needed_deref) {
- add_to_msg("(original 'git ");
- add_to_msg(me);
- add_to_msg("' arguments: ");
- for (i = 0; i < argc; i++) {
- if (i)
- add_to_msg(" ");
- add_to_msg(argv[i]);
- }
- add_to_msg(")\n");
- }
-
- if (merge_recursive(sha1_to_hex(base->object.sha1),
- sha1_to_hex(head), "HEAD",
- sha1_to_hex(next->object.sha1), oneline) ||
- write_tree(head, 0, NULL)) {
- add_to_msg("\nConflicts:\n\n");
- read_cache();
- for (i = 0; i < active_nr;) {
- struct cache_entry *ce = active_cache[i++];
- if (ce_stage(ce)) {
- add_to_msg("\t");
- add_to_msg(ce->name);
- add_to_msg("\n");
- while (i < active_nr && !strcmp(ce->name,
- active_cache[i]->name))
- i++;
- }
- }
- if (close(msg_fd) || commit_lock_file(&msg_file) < 0)
- die ("Error wrapping up %s", defmsg);
- fprintf(stderr, "Automatic %s failed. "
- "After resolving the conflicts,\n"
- "mark the corrected paths with 'git-add <paths>'\n"
- "and commit the result.\n", me);
- if (action == CHERRY_PICK) {
- fprintf(stderr, "When commiting, use the option "
- "'-c %s' to retain authorship and message.\n",
- find_unique_abbrev(commit->object.sha1,
- DEFAULT_ABBREV));
- }
- exit(1);
- }
- if (close(msg_fd) || commit_lock_file(&msg_file) < 0)
- die ("Error wrapping up %s", defmsg);
- fprintf(stderr, "Finished one %s.\n", me);
-
- /*
- *
- * If we are cherry-pick, and if the merge did not result in
- * hand-editing, we will hit this commit and inherit the original
- * author date and name.
- * If we are revert, or if our cherry-pick results in a hand merge,
- * we had better say that the current user is responsible for that.
- */
-
- if (!no_commit) {
- if (edit)
- return execl_git_cmd("commit", "-n", NULL);
- else
- return execl_git_cmd("commit", "-n", "-F", defmsg, NULL);
- }
- if (reencoded_message)
- free(reencoded_message);
-
- return 0;
-}
-
-int cmd_revert(int argc, const char **argv, const char *prefix)
-{
- if (isatty(0))
- edit = 1;
- action = REVERT;
- return revert_or_cherry_pick(argc, argv);
-}
-
-int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
-{
- replay = 1;
- action = CHERRY_PICK;
- return revert_or_cherry_pick(argc, argv);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-29 09:30:03 +0000