| /* |
| * Builtin "git am" |
| * |
| * Based on git-am.sh by Junio C Hamano. |
| */ |
| |
| #include "builtin.h" |
| #include "abspath.h" |
| #include "advice.h" |
| #include "config.h" |
| #include "editor.h" |
| #include "environment.h" |
| #include "gettext.h" |
| #include "hex.h" |
| #include "parse-options.h" |
| #include "dir.h" |
| #include "run-command.h" |
| #include "hook.h" |
| #include "quote.h" |
| #include "tempfile.h" |
| #include "lockfile.h" |
| #include "cache-tree.h" |
| #include "refs.h" |
| #include "commit.h" |
| #include "diff.h" |
| #include "unpack-trees.h" |
| #include "branch.h" |
| #include "object-name.h" |
| #include "preload-index.h" |
| #include "sequencer.h" |
| #include "revision.h" |
| #include "merge-recursive.h" |
| #include "log-tree.h" |
| #include "notes-utils.h" |
| #include "rerere.h" |
| #include "mailinfo.h" |
| #include "apply.h" |
| #include "string-list.h" |
| #include "pager.h" |
| #include "path.h" |
| #include "repository.h" |
| #include "pretty.h" |
| |
| /** |
| * Returns the length of the first line of msg. |
| */ |
| static int linelen(const char *msg) |
| { |
| return strchrnul(msg, '\n') - msg; |
| } |
| |
| /** |
| * Returns true if `str` consists of only whitespace, false otherwise. |
| */ |
| static int str_isspace(const char *str) |
| { |
| for (; *str; str++) |
| if (!isspace(*str)) |
| return 0; |
| |
| return 1; |
| } |
| |
| enum patch_format { |
| PATCH_FORMAT_UNKNOWN = 0, |
| PATCH_FORMAT_MBOX, |
| PATCH_FORMAT_STGIT, |
| PATCH_FORMAT_STGIT_SERIES, |
| PATCH_FORMAT_HG, |
| PATCH_FORMAT_MBOXRD |
| }; |
| |
| enum keep_type { |
| KEEP_FALSE = 0, |
| KEEP_TRUE, /* pass -k flag to git-mailinfo */ |
| KEEP_NON_PATCH /* pass -b flag to git-mailinfo */ |
| }; |
| |
| enum scissors_type { |
| SCISSORS_UNSET = -1, |
| SCISSORS_FALSE = 0, /* pass --no-scissors to git-mailinfo */ |
| SCISSORS_TRUE /* pass --scissors to git-mailinfo */ |
| }; |
| |
| enum signoff_type { |
| SIGNOFF_FALSE = 0, |
| SIGNOFF_TRUE = 1, |
| SIGNOFF_EXPLICIT /* --signoff was set on the command-line */ |
| }; |
| |
| enum resume_type { |
| RESUME_FALSE = 0, |
| RESUME_APPLY, |
| RESUME_RESOLVED, |
| RESUME_SKIP, |
| RESUME_ABORT, |
| RESUME_QUIT, |
| RESUME_SHOW_PATCH_RAW, |
| RESUME_SHOW_PATCH_DIFF, |
| RESUME_ALLOW_EMPTY, |
| }; |
| |
| enum empty_action { |
| STOP_ON_EMPTY_COMMIT = 0, /* output errors and stop in the middle of an am session */ |
| DROP_EMPTY_COMMIT, /* skip with a notice message, unless "--quiet" has been passed */ |
| KEEP_EMPTY_COMMIT, /* keep recording as empty commits */ |
| }; |
| |
| struct am_state { |
| /* state directory path */ |
| char *dir; |
| |
| /* current and last patch numbers, 1-indexed */ |
| int cur; |
| int last; |
| |
| /* commit metadata and message */ |
| char *author_name; |
| char *author_email; |
| char *author_date; |
| char *msg; |
| size_t msg_len; |
| |
| /* when --rebasing, records the original commit the patch came from */ |
| struct object_id orig_commit; |
| |
| /* number of digits in patch filename */ |
| int prec; |
| |
| /* various operating modes and command line options */ |
| int interactive; |
| int no_verify; |
| int threeway; |
| int quiet; |
| int signoff; /* enum signoff_type */ |
| int utf8; |
| int keep; /* enum keep_type */ |
| int message_id; |
| int scissors; /* enum scissors_type */ |
| int quoted_cr; /* enum quoted_cr_action */ |
| int empty_type; /* enum empty_action */ |
| struct strvec git_apply_opts; |
| const char *resolvemsg; |
| int committer_date_is_author_date; |
| int ignore_date; |
| int allow_rerere_autoupdate; |
| const char *sign_commit; |
| int rebasing; |
| }; |
| |
| /** |
| * Initializes am_state with the default values. |
| */ |
| static void am_state_init(struct am_state *state) |
| { |
| int gpgsign; |
| |
| memset(state, 0, sizeof(*state)); |
| |
| state->dir = git_pathdup("rebase-apply"); |
| |
| state->prec = 4; |
| |
| git_config_get_bool("am.threeway", &state->threeway); |
| |
| state->utf8 = 1; |
| |
| git_config_get_bool("am.messageid", &state->message_id); |
| |
| state->scissors = SCISSORS_UNSET; |
| state->quoted_cr = quoted_cr_unset; |
| |
| strvec_init(&state->git_apply_opts); |
| |
| if (!git_config_get_bool("commit.gpgsign", &gpgsign)) |
| state->sign_commit = gpgsign ? "" : NULL; |
| } |
| |
| /** |
| * Releases memory allocated by an am_state. |
| */ |
| static void am_state_release(struct am_state *state) |
| { |
| free(state->dir); |
| free(state->author_name); |
| free(state->author_email); |
| free(state->author_date); |
| free(state->msg); |
| strvec_clear(&state->git_apply_opts); |
| } |
| |
| static int am_option_parse_quoted_cr(const struct option *opt, |
| const char *arg, int unset) |
| { |
| BUG_ON_OPT_NEG(unset); |
| |
| if (mailinfo_parse_quoted_cr_action(arg, opt->value) != 0) |
| return error(_("bad action '%s' for '%s'"), arg, "--quoted-cr"); |
| return 0; |
| } |
| |
| static int am_option_parse_empty(const struct option *opt, |
| const char *arg, int unset) |
| { |
| int *opt_value = opt->value; |
| |
| BUG_ON_OPT_NEG(unset); |
| |
| if (!strcmp(arg, "stop")) |
| *opt_value = STOP_ON_EMPTY_COMMIT; |
| else if (!strcmp(arg, "drop")) |
| *opt_value = DROP_EMPTY_COMMIT; |
| else if (!strcmp(arg, "keep")) |
| *opt_value = KEEP_EMPTY_COMMIT; |
| else |
| return error(_("invalid value for '%s': '%s'"), "--empty", arg); |
| |
| return 0; |
| } |
| |
| /** |
| * Returns path relative to the am_state directory. |
| */ |
| static inline const char *am_path(const struct am_state *state, const char *path) |
| { |
| return mkpath("%s/%s", state->dir, path); |
| } |
| |
| /** |
| * For convenience to call write_file() |
| */ |
| static void write_state_text(const struct am_state *state, |
| const char *name, const char *string) |
| { |
| write_file(am_path(state, name), "%s", string); |
| } |
| |
| static void write_state_count(const struct am_state *state, |
| const char *name, int value) |
| { |
| write_file(am_path(state, name), "%d", value); |
| } |
| |
| static void write_state_bool(const struct am_state *state, |
| const char *name, int value) |
| { |
| write_state_text(state, name, value ? "t" : "f"); |
| } |
| |
| /** |
| * If state->quiet is false, calls fprintf(fp, fmt, ...), and appends a newline |
| * at the end. |
| */ |
| __attribute__((format (printf, 3, 4))) |
| static void say(const struct am_state *state, FILE *fp, const char *fmt, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, fmt); |
| if (!state->quiet) { |
| vfprintf(fp, fmt, ap); |
| putc('\n', fp); |
| } |
| va_end(ap); |
| } |
| |
| /** |
| * Returns 1 if there is an am session in progress, 0 otherwise. |
| */ |
| static int am_in_progress(const struct am_state *state) |
| { |
| struct stat st; |
| |
| if (lstat(state->dir, &st) < 0 || !S_ISDIR(st.st_mode)) |
| return 0; |
| if (lstat(am_path(state, "last"), &st) || !S_ISREG(st.st_mode)) |
| return 0; |
| if (lstat(am_path(state, "next"), &st) || !S_ISREG(st.st_mode)) |
| return 0; |
| return 1; |
| } |
| |
| /** |
| * Reads the contents of `file` in the `state` directory into `sb`. Returns the |
| * number of bytes read on success, -1 if the file does not exist. If `trim` is |
| * set, trailing whitespace will be removed. |
| */ |
| static int read_state_file(struct strbuf *sb, const struct am_state *state, |
| const char *file, int trim) |
| { |
| strbuf_reset(sb); |
| |
| if (strbuf_read_file(sb, am_path(state, file), 0) >= 0) { |
| if (trim) |
| strbuf_trim(sb); |
| |
| return sb->len; |
| } |
| |
| if (errno == ENOENT) |
| return -1; |
| |
| die_errno(_("could not read '%s'"), am_path(state, file)); |
| } |
| |
| /** |
| * Reads and parses the state directory's "author-script" file, and sets |
| * state->author_name, state->author_email and state->author_date accordingly. |
| * Returns 0 on success, -1 if the file could not be parsed. |
| * |
| * The author script is of the format: |
| * |
| * GIT_AUTHOR_NAME='$author_name' |
| * GIT_AUTHOR_EMAIL='$author_email' |
| * GIT_AUTHOR_DATE='$author_date' |
| * |
| * where $author_name, $author_email and $author_date are quoted. We are strict |
| * with our parsing, as the file was meant to be eval'd in the old git-am.sh |
| * script, and thus if the file differs from what this function expects, it is |
| * better to bail out than to do something that the user does not expect. |
| */ |
| static int read_am_author_script(struct am_state *state) |
| { |
| const char *filename = am_path(state, "author-script"); |
| |
| assert(!state->author_name); |
| assert(!state->author_email); |
| assert(!state->author_date); |
| |
| return read_author_script(filename, &state->author_name, |
| &state->author_email, &state->author_date, 1); |
| } |
| |
| /** |
| * Saves state->author_name, state->author_email and state->author_date in the |
| * state directory's "author-script" file. |
| */ |
| static void write_author_script(const struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_addstr(&sb, "GIT_AUTHOR_NAME="); |
| sq_quote_buf(&sb, state->author_name); |
| strbuf_addch(&sb, '\n'); |
| |
| strbuf_addstr(&sb, "GIT_AUTHOR_EMAIL="); |
| sq_quote_buf(&sb, state->author_email); |
| strbuf_addch(&sb, '\n'); |
| |
| strbuf_addstr(&sb, "GIT_AUTHOR_DATE="); |
| sq_quote_buf(&sb, state->author_date); |
| strbuf_addch(&sb, '\n'); |
| |
| write_state_text(state, "author-script", sb.buf); |
| |
| strbuf_release(&sb); |
| } |
| |
| /** |
| * Reads the commit message from the state directory's "final-commit" file, |
| * setting state->msg to its contents and state->msg_len to the length of its |
| * contents in bytes. |
| * |
| * Returns 0 on success, -1 if the file does not exist. |
| */ |
| static int read_commit_msg(struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| assert(!state->msg); |
| |
| if (read_state_file(&sb, state, "final-commit", 0) < 0) { |
| strbuf_release(&sb); |
| return -1; |
| } |
| |
| state->msg = strbuf_detach(&sb, &state->msg_len); |
| return 0; |
| } |
| |
| /** |
| * Saves state->msg in the state directory's "final-commit" file. |
| */ |
| static void write_commit_msg(const struct am_state *state) |
| { |
| const char *filename = am_path(state, "final-commit"); |
| write_file_buf(filename, state->msg, state->msg_len); |
| } |
| |
| /** |
| * Loads state from disk. |
| */ |
| static void am_load(struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| if (read_state_file(&sb, state, "next", 1) < 0) |
| BUG("state file 'next' does not exist"); |
| state->cur = strtol(sb.buf, NULL, 10); |
| |
| if (read_state_file(&sb, state, "last", 1) < 0) |
| BUG("state file 'last' does not exist"); |
| state->last = strtol(sb.buf, NULL, 10); |
| |
| if (read_am_author_script(state) < 0) |
| die(_("could not parse author script")); |
| |
| read_commit_msg(state); |
| |
| if (read_state_file(&sb, state, "original-commit", 1) < 0) |
| oidclr(&state->orig_commit); |
| else if (get_oid_hex(sb.buf, &state->orig_commit) < 0) |
| die(_("could not parse %s"), am_path(state, "original-commit")); |
| |
| read_state_file(&sb, state, "threeway", 1); |
| state->threeway = !strcmp(sb.buf, "t"); |
| |
| read_state_file(&sb, state, "quiet", 1); |
| state->quiet = !strcmp(sb.buf, "t"); |
| |
| read_state_file(&sb, state, "sign", 1); |
| state->signoff = !strcmp(sb.buf, "t"); |
| |
| read_state_file(&sb, state, "utf8", 1); |
| state->utf8 = !strcmp(sb.buf, "t"); |
| |
| if (file_exists(am_path(state, "rerere-autoupdate"))) { |
| read_state_file(&sb, state, "rerere-autoupdate", 1); |
| state->allow_rerere_autoupdate = strcmp(sb.buf, "t") ? |
| RERERE_NOAUTOUPDATE : RERERE_AUTOUPDATE; |
| } else { |
| state->allow_rerere_autoupdate = 0; |
| } |
| |
| read_state_file(&sb, state, "keep", 1); |
| if (!strcmp(sb.buf, "t")) |
| state->keep = KEEP_TRUE; |
| else if (!strcmp(sb.buf, "b")) |
| state->keep = KEEP_NON_PATCH; |
| else |
| state->keep = KEEP_FALSE; |
| |
| read_state_file(&sb, state, "messageid", 1); |
| state->message_id = !strcmp(sb.buf, "t"); |
| |
| read_state_file(&sb, state, "scissors", 1); |
| if (!strcmp(sb.buf, "t")) |
| state->scissors = SCISSORS_TRUE; |
| else if (!strcmp(sb.buf, "f")) |
| state->scissors = SCISSORS_FALSE; |
| else |
| state->scissors = SCISSORS_UNSET; |
| |
| read_state_file(&sb, state, "quoted-cr", 1); |
| if (!*sb.buf) |
| state->quoted_cr = quoted_cr_unset; |
| else if (mailinfo_parse_quoted_cr_action(sb.buf, &state->quoted_cr) != 0) |
| die(_("could not parse %s"), am_path(state, "quoted-cr")); |
| |
| read_state_file(&sb, state, "apply-opt", 1); |
| strvec_clear(&state->git_apply_opts); |
| if (sq_dequote_to_strvec(sb.buf, &state->git_apply_opts) < 0) |
| die(_("could not parse %s"), am_path(state, "apply-opt")); |
| |
| state->rebasing = !!file_exists(am_path(state, "rebasing")); |
| |
| strbuf_release(&sb); |
| } |
| |
| /** |
| * Removes the am_state directory, forcefully terminating the current am |
| * session. |
| */ |
| static void am_destroy(const struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_addstr(&sb, state->dir); |
| remove_dir_recursively(&sb, 0); |
| strbuf_release(&sb); |
| } |
| |
| /** |
| * Runs applypatch-msg hook. Returns its exit code. |
| */ |
| static int run_applypatch_msg_hook(struct am_state *state) |
| { |
| int ret = 0; |
| |
| assert(state->msg); |
| |
| if (!state->no_verify) |
| ret = run_hooks_l("applypatch-msg", am_path(state, "final-commit"), NULL); |
| |
| if (!ret) { |
| FREE_AND_NULL(state->msg); |
| if (read_commit_msg(state) < 0) |
| die(_("'%s' was deleted by the applypatch-msg hook"), |
| am_path(state, "final-commit")); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * Runs post-rewrite hook. Returns it exit code. |
| */ |
| static int run_post_rewrite_hook(const struct am_state *state) |
| { |
| struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT; |
| |
| strvec_push(&opt.args, "rebase"); |
| opt.path_to_stdin = am_path(state, "rewritten"); |
| |
| return run_hooks_opt("post-rewrite", &opt); |
| } |
| |
| /** |
| * Reads the state directory's "rewritten" file, and copies notes from the old |
| * commits listed in the file to their rewritten commits. |
| * |
| * Returns 0 on success, -1 on failure. |
| */ |
| static int copy_notes_for_rebase(const struct am_state *state) |
| { |
| struct notes_rewrite_cfg *c; |
| struct strbuf sb = STRBUF_INIT; |
| const char *invalid_line = _("Malformed input line: '%s'."); |
| const char *msg = "Notes added by 'git rebase'"; |
| FILE *fp; |
| int ret = 0; |
| |
| assert(state->rebasing); |
| |
| c = init_copy_notes_for_rewrite("rebase"); |
| if (!c) |
| return 0; |
| |
| fp = xfopen(am_path(state, "rewritten"), "r"); |
| |
| while (!strbuf_getline_lf(&sb, fp)) { |
| struct object_id from_obj, to_obj; |
| const char *p; |
| |
| if (sb.len != the_hash_algo->hexsz * 2 + 1) { |
| ret = error(invalid_line, sb.buf); |
| goto finish; |
| } |
| |
| if (parse_oid_hex(sb.buf, &from_obj, &p)) { |
| ret = error(invalid_line, sb.buf); |
| goto finish; |
| } |
| |
| if (*p != ' ') { |
| ret = error(invalid_line, sb.buf); |
| goto finish; |
| } |
| |
| if (get_oid_hex(p + 1, &to_obj)) { |
| ret = error(invalid_line, sb.buf); |
| goto finish; |
| } |
| |
| if (copy_note_for_rewrite(c, &from_obj, &to_obj)) |
| ret = error(_("Failed to copy notes from '%s' to '%s'"), |
| oid_to_hex(&from_obj), oid_to_hex(&to_obj)); |
| } |
| |
| finish: |
| finish_copy_notes_for_rewrite(the_repository, c, msg); |
| fclose(fp); |
| strbuf_release(&sb); |
| return ret; |
| } |
| |
| /** |
| * Determines if the file looks like a piece of RFC2822 mail by grabbing all |
| * non-indented lines and checking if they look like they begin with valid |
| * header field names. |
| * |
| * Returns 1 if the file looks like a piece of mail, 0 otherwise. |
| */ |
| static int is_mail(FILE *fp) |
| { |
| const char *header_regex = "^[!-9;-~]+:"; |
| struct strbuf sb = STRBUF_INIT; |
| regex_t regex; |
| int ret = 1; |
| |
| if (fseek(fp, 0L, SEEK_SET)) |
| die_errno(_("fseek failed")); |
| |
| if (regcomp(®ex, header_regex, REG_NOSUB | REG_EXTENDED)) |
| die("invalid pattern: %s", header_regex); |
| |
| while (!strbuf_getline(&sb, fp)) { |
| if (!sb.len) |
| break; /* End of header */ |
| |
| /* Ignore indented folded lines */ |
| if (*sb.buf == '\t' || *sb.buf == ' ') |
| continue; |
| |
| /* It's a header if it matches header_regex */ |
| if (regexec(®ex, sb.buf, 0, NULL, 0)) { |
| ret = 0; |
| goto done; |
| } |
| } |
| |
| done: |
| regfree(®ex); |
| strbuf_release(&sb); |
| return ret; |
| } |
| |
| /** |
| * Attempts to detect the patch_format of the patches contained in `paths`, |
| * returning the PATCH_FORMAT_* enum value. Returns PATCH_FORMAT_UNKNOWN if |
| * detection fails. |
| */ |
| static int detect_patch_format(const char **paths) |
| { |
| enum patch_format ret = PATCH_FORMAT_UNKNOWN; |
| struct strbuf l1 = STRBUF_INIT; |
| struct strbuf l2 = STRBUF_INIT; |
| struct strbuf l3 = STRBUF_INIT; |
| FILE *fp; |
| |
| /* |
| * We default to mbox format if input is from stdin and for directories |
| */ |
| if (!*paths || !strcmp(*paths, "-") || is_directory(*paths)) |
| return PATCH_FORMAT_MBOX; |
| |
| /* |
| * Otherwise, check the first few lines of the first patch, starting |
| * from the first non-blank line, to try to detect its format. |
| */ |
| |
| fp = xfopen(*paths, "r"); |
| |
| while (!strbuf_getline(&l1, fp)) { |
| if (l1.len) |
| break; |
| } |
| |
| if (starts_with(l1.buf, "From ") || starts_with(l1.buf, "From: ")) { |
| ret = PATCH_FORMAT_MBOX; |
| goto done; |
| } |
| |
| if (starts_with(l1.buf, "# This series applies on GIT commit")) { |
| ret = PATCH_FORMAT_STGIT_SERIES; |
| goto done; |
| } |
| |
| if (!strcmp(l1.buf, "# HG changeset patch")) { |
| ret = PATCH_FORMAT_HG; |
| goto done; |
| } |
| |
| strbuf_getline(&l2, fp); |
| strbuf_getline(&l3, fp); |
| |
| /* |
| * If the second line is empty and the third is a From, Author or Date |
| * entry, this is likely an StGit patch. |
| */ |
| if (l1.len && !l2.len && |
| (starts_with(l3.buf, "From:") || |
| starts_with(l3.buf, "Author:") || |
| starts_with(l3.buf, "Date:"))) { |
| ret = PATCH_FORMAT_STGIT; |
| goto done; |
| } |
| |
| if (l1.len && is_mail(fp)) { |
| ret = PATCH_FORMAT_MBOX; |
| goto done; |
| } |
| |
| done: |
| fclose(fp); |
| strbuf_release(&l1); |
| strbuf_release(&l2); |
| strbuf_release(&l3); |
| return ret; |
| } |
| |
| /** |
| * Splits out individual email patches from `paths`, where each path is either |
| * a mbox file or a Maildir. Returns 0 on success, -1 on failure. |
| */ |
| static int split_mail_mbox(struct am_state *state, const char **paths, |
| int keep_cr, int mboxrd) |
| { |
| struct child_process cp = CHILD_PROCESS_INIT; |
| struct strbuf last = STRBUF_INIT; |
| int ret; |
| |
| cp.git_cmd = 1; |
| strvec_push(&cp.args, "mailsplit"); |
| strvec_pushf(&cp.args, "-d%d", state->prec); |
| strvec_pushf(&cp.args, "-o%s", state->dir); |
| strvec_push(&cp.args, "-b"); |
| if (keep_cr) |
| strvec_push(&cp.args, "--keep-cr"); |
| if (mboxrd) |
| strvec_push(&cp.args, "--mboxrd"); |
| strvec_push(&cp.args, "--"); |
| strvec_pushv(&cp.args, paths); |
| |
| ret = capture_command(&cp, &last, 8); |
| if (ret) |
| goto exit; |
| |
| state->cur = 1; |
| state->last = strtol(last.buf, NULL, 10); |
| |
| exit: |
| strbuf_release(&last); |
| return ret ? -1 : 0; |
| } |
| |
| /** |
| * Callback signature for split_mail_conv(). The foreign patch should be |
| * read from `in`, and the converted patch (in RFC2822 mail format) should be |
| * written to `out`. Return 0 on success, or -1 on failure. |
| */ |
| typedef int (*mail_conv_fn)(FILE *out, FILE *in, int keep_cr); |
| |
| /** |
| * Calls `fn` for each file in `paths` to convert the foreign patch to the |
| * RFC2822 mail format suitable for parsing with git-mailinfo. |
| * |
| * Returns 0 on success, -1 on failure. |
| */ |
| static int split_mail_conv(mail_conv_fn fn, struct am_state *state, |
| const char **paths, int keep_cr) |
| { |
| static const char *stdin_only[] = {"-", NULL}; |
| int i; |
| |
| if (!*paths) |
| paths = stdin_only; |
| |
| for (i = 0; *paths; paths++, i++) { |
| FILE *in, *out; |
| const char *mail; |
| int ret; |
| |
| if (!strcmp(*paths, "-")) |
| in = stdin; |
| else |
| in = fopen(*paths, "r"); |
| |
| if (!in) |
| return error_errno(_("could not open '%s' for reading"), |
| *paths); |
| |
| mail = mkpath("%s/%0*d", state->dir, state->prec, i + 1); |
| |
| out = fopen(mail, "w"); |
| if (!out) { |
| if (in != stdin) |
| fclose(in); |
| return error_errno(_("could not open '%s' for writing"), |
| mail); |
| } |
| |
| ret = fn(out, in, keep_cr); |
| |
| fclose(out); |
| if (in != stdin) |
| fclose(in); |
| |
| if (ret) |
| return error(_("could not parse patch '%s'"), *paths); |
| } |
| |
| state->cur = 1; |
| state->last = i; |
| return 0; |
| } |
| |
| /** |
| * A split_mail_conv() callback that converts an StGit patch to an RFC2822 |
| * message suitable for parsing with git-mailinfo. |
| */ |
| static int stgit_patch_to_mail(FILE *out, FILE *in, int keep_cr UNUSED) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| int subject_printed = 0; |
| |
| while (!strbuf_getline_lf(&sb, in)) { |
| const char *str; |
| |
| if (str_isspace(sb.buf)) |
| continue; |
| else if (skip_prefix(sb.buf, "Author:", &str)) |
| fprintf(out, "From:%s\n", str); |
| else if (starts_with(sb.buf, "From") || starts_with(sb.buf, "Date")) |
| fprintf(out, "%s\n", sb.buf); |
| else if (!subject_printed) { |
| fprintf(out, "Subject: %s\n", sb.buf); |
| subject_printed = 1; |
| } else { |
| fprintf(out, "\n%s\n", sb.buf); |
| break; |
| } |
| } |
| |
| strbuf_reset(&sb); |
| while (strbuf_fread(&sb, 8192, in) > 0) { |
| fwrite(sb.buf, 1, sb.len, out); |
| strbuf_reset(&sb); |
| } |
| |
| strbuf_release(&sb); |
| return 0; |
| } |
| |
| /** |
| * This function only supports a single StGit series file in `paths`. |
| * |
| * Given an StGit series file, converts the StGit patches in the series into |
| * RFC2822 messages suitable for parsing with git-mailinfo, and queues them in |
| * the state directory. |
| * |
| * Returns 0 on success, -1 on failure. |
| */ |
| static int split_mail_stgit_series(struct am_state *state, const char **paths, |
| int keep_cr) |
| { |
| const char *series_dir; |
| char *series_dir_buf; |
| FILE *fp; |
| struct strvec patches = STRVEC_INIT; |
| struct strbuf sb = STRBUF_INIT; |
| int ret; |
| |
| if (!paths[0] || paths[1]) |
| return error(_("Only one StGIT patch series can be applied at once")); |
| |
| series_dir_buf = xstrdup(*paths); |
| series_dir = dirname(series_dir_buf); |
| |
| fp = fopen(*paths, "r"); |
| if (!fp) |
| return error_errno(_("could not open '%s' for reading"), *paths); |
| |
| while (!strbuf_getline_lf(&sb, fp)) { |
| if (*sb.buf == '#') |
| continue; /* skip comment lines */ |
| |
| strvec_push(&patches, mkpath("%s/%s", series_dir, sb.buf)); |
| } |
| |
| fclose(fp); |
| strbuf_release(&sb); |
| free(series_dir_buf); |
| |
| ret = split_mail_conv(stgit_patch_to_mail, state, patches.v, keep_cr); |
| |
| strvec_clear(&patches); |
| return ret; |
| } |
| |
| /** |
| * A split_patches_conv() callback that converts a mercurial patch to a RFC2822 |
| * message suitable for parsing with git-mailinfo. |
| */ |
| static int hg_patch_to_mail(FILE *out, FILE *in, int keep_cr UNUSED) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| int rc = 0; |
| |
| while (!strbuf_getline_lf(&sb, in)) { |
| const char *str; |
| |
| if (skip_prefix(sb.buf, "# User ", &str)) |
| fprintf(out, "From: %s\n", str); |
| else if (skip_prefix(sb.buf, "# Date ", &str)) { |
| timestamp_t timestamp; |
| long tz, tz2; |
| char *end; |
| |
| errno = 0; |
| timestamp = parse_timestamp(str, &end, 10); |
| if (errno) { |
| rc = error(_("invalid timestamp")); |
| goto exit; |
| } |
| |
| if (!skip_prefix(end, " ", &str)) { |
| rc = error(_("invalid Date line")); |
| goto exit; |
| } |
| |
| errno = 0; |
| tz = strtol(str, &end, 10); |
| if (errno) { |
| rc = error(_("invalid timezone offset")); |
| goto exit; |
| } |
| |
| if (*end) { |
| rc = error(_("invalid Date line")); |
| goto exit; |
| } |
| |
| /* |
| * mercurial's timezone is in seconds west of UTC, |
| * however git's timezone is in hours + minutes east of |
| * UTC. Convert it. |
| */ |
| tz2 = labs(tz) / 3600 * 100 + labs(tz) % 3600 / 60; |
| if (tz > 0) |
| tz2 = -tz2; |
| |
| fprintf(out, "Date: %s\n", show_date(timestamp, tz2, DATE_MODE(RFC2822))); |
| } else if (starts_with(sb.buf, "# ")) { |
| continue; |
| } else { |
| fprintf(out, "\n%s\n", sb.buf); |
| break; |
| } |
| } |
| |
| strbuf_reset(&sb); |
| while (strbuf_fread(&sb, 8192, in) > 0) { |
| fwrite(sb.buf, 1, sb.len, out); |
| strbuf_reset(&sb); |
| } |
| exit: |
| strbuf_release(&sb); |
| return rc; |
| } |
| |
| /** |
| * Splits a list of files/directories into individual email patches. Each path |
| * in `paths` must be a file/directory that is formatted according to |
| * `patch_format`. |
| * |
| * Once split out, the individual email patches will be stored in the state |
| * directory, with each patch's filename being its index, padded to state->prec |
| * digits. |
| * |
| * state->cur will be set to the index of the first mail, and state->last will |
| * be set to the index of the last mail. |
| * |
| * Set keep_cr to 0 to convert all lines ending with \r\n to end with \n, 1 |
| * to disable this behavior, -1 to use the default configured setting. |
| * |
| * Returns 0 on success, -1 on failure. |
| */ |
| static int split_mail(struct am_state *state, enum patch_format patch_format, |
| const char **paths, int keep_cr) |
| { |
| if (keep_cr < 0) { |
| keep_cr = 0; |
| git_config_get_bool("am.keepcr", &keep_cr); |
| } |
| |
| switch (patch_format) { |
| case PATCH_FORMAT_MBOX: |
| return split_mail_mbox(state, paths, keep_cr, 0); |
| case PATCH_FORMAT_STGIT: |
| return split_mail_conv(stgit_patch_to_mail, state, paths, keep_cr); |
| case PATCH_FORMAT_STGIT_SERIES: |
| return split_mail_stgit_series(state, paths, keep_cr); |
| case PATCH_FORMAT_HG: |
| return split_mail_conv(hg_patch_to_mail, state, paths, keep_cr); |
| case PATCH_FORMAT_MBOXRD: |
| return split_mail_mbox(state, paths, keep_cr, 1); |
| default: |
| BUG("invalid patch_format"); |
| } |
| return -1; |
| } |
| |
| /** |
| * Setup a new am session for applying patches |
| */ |
| static void am_setup(struct am_state *state, enum patch_format patch_format, |
| const char **paths, int keep_cr) |
| { |
| struct object_id curr_head; |
| const char *str; |
| struct strbuf sb = STRBUF_INIT; |
| |
| if (!patch_format) |
| patch_format = detect_patch_format(paths); |
| |
| if (!patch_format) { |
| fprintf_ln(stderr, _("Patch format detection failed.")); |
| exit(128); |
| } |
| |
| if (mkdir(state->dir, 0777) < 0 && errno != EEXIST) |
| die_errno(_("failed to create directory '%s'"), state->dir); |
| refs_delete_ref(get_main_ref_store(the_repository), NULL, |
| "REBASE_HEAD", NULL, REF_NO_DEREF); |
| |
| if (split_mail(state, patch_format, paths, keep_cr) < 0) { |
| am_destroy(state); |
| die(_("Failed to split patches.")); |
| } |
| |
| if (state->rebasing) |
| state->threeway = 1; |
| |
| write_state_bool(state, "threeway", state->threeway); |
| write_state_bool(state, "quiet", state->quiet); |
| write_state_bool(state, "sign", state->signoff); |
| write_state_bool(state, "utf8", state->utf8); |
| |
| if (state->allow_rerere_autoupdate) |
| write_state_bool(state, "rerere-autoupdate", |
| state->allow_rerere_autoupdate == RERERE_AUTOUPDATE); |
| |
| switch (state->keep) { |
| case KEEP_FALSE: |
| str = "f"; |
| break; |
| case KEEP_TRUE: |
| str = "t"; |
| break; |
| case KEEP_NON_PATCH: |
| str = "b"; |
| break; |
| default: |
| BUG("invalid value for state->keep"); |
| } |
| |
| write_state_text(state, "keep", str); |
| write_state_bool(state, "messageid", state->message_id); |
| |
| switch (state->scissors) { |
| case SCISSORS_UNSET: |
| str = ""; |
| break; |
| case SCISSORS_FALSE: |
| str = "f"; |
| break; |
| case SCISSORS_TRUE: |
| str = "t"; |
| break; |
| default: |
| BUG("invalid value for state->scissors"); |
| } |
| write_state_text(state, "scissors", str); |
| |
| switch (state->quoted_cr) { |
| case quoted_cr_unset: |
| str = ""; |
| break; |
| case quoted_cr_nowarn: |
| str = "nowarn"; |
| break; |
| case quoted_cr_warn: |
| str = "warn"; |
| break; |
| case quoted_cr_strip: |
| str = "strip"; |
| break; |
| default: |
| BUG("invalid value for state->quoted_cr"); |
| } |
| write_state_text(state, "quoted-cr", str); |
| |
| sq_quote_argv(&sb, state->git_apply_opts.v); |
| write_state_text(state, "apply-opt", sb.buf); |
| |
| if (state->rebasing) |
| write_state_text(state, "rebasing", ""); |
| else |
| write_state_text(state, "applying", ""); |
| |
| if (!repo_get_oid(the_repository, "HEAD", &curr_head)) { |
| write_state_text(state, "abort-safety", oid_to_hex(&curr_head)); |
| if (!state->rebasing) |
| refs_update_ref(get_main_ref_store(the_repository), |
| "am", "ORIG_HEAD", &curr_head, NULL, |
| 0, |
| UPDATE_REFS_DIE_ON_ERR); |
| } else { |
| write_state_text(state, "abort-safety", ""); |
| if (!state->rebasing) |
| refs_delete_ref(get_main_ref_store(the_repository), |
| NULL, "ORIG_HEAD", NULL, 0); |
| } |
| |
| /* |
| * NOTE: Since the "next" and "last" files determine if an am_state |
| * session is in progress, they should be written last. |
| */ |
| |
| write_state_count(state, "next", state->cur); |
| write_state_count(state, "last", state->last); |
| |
| strbuf_release(&sb); |
| } |
| |
| /** |
| * Increments the patch pointer, and cleans am_state for the application of the |
| * next patch. |
| */ |
| static void am_next(struct am_state *state) |
| { |
| struct object_id head; |
| |
| FREE_AND_NULL(state->author_name); |
| FREE_AND_NULL(state->author_email); |
| FREE_AND_NULL(state->author_date); |
| FREE_AND_NULL(state->msg); |
| state->msg_len = 0; |
| |
| unlink(am_path(state, "author-script")); |
| unlink(am_path(state, "final-commit")); |
| |
| oidclr(&state->orig_commit); |
| unlink(am_path(state, "original-commit")); |
| refs_delete_ref(get_main_ref_store(the_repository), NULL, |
| "REBASE_HEAD", NULL, REF_NO_DEREF); |
| |
| if (!repo_get_oid(the_repository, "HEAD", &head)) |
| write_state_text(state, "abort-safety", oid_to_hex(&head)); |
| else |
| write_state_text(state, "abort-safety", ""); |
| |
| state->cur++; |
| write_state_count(state, "next", state->cur); |
| } |
| |
| /** |
| * Returns the filename of the current patch email. |
| */ |
| static const char *msgnum(const struct am_state *state) |
| { |
| static struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_reset(&sb); |
| strbuf_addf(&sb, "%0*d", state->prec, state->cur); |
| |
| return sb.buf; |
| } |
| |
| /** |
| * Dies with a user-friendly message on how to proceed after resolving the |
| * problem. This message can be overridden with state->resolvemsg. |
| */ |
| static void NORETURN die_user_resolve(const struct am_state *state) |
| { |
| if (state->resolvemsg) { |
| advise_if_enabled(ADVICE_MERGE_CONFLICT, "%s", state->resolvemsg); |
| } else { |
| const char *cmdline = state->interactive ? "git am -i" : "git am"; |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_addf(&sb, _("When you have resolved this problem, run \"%s --continue\".\n"), cmdline); |
| strbuf_addf(&sb, _("If you prefer to skip this patch, run \"%s --skip\" instead.\n"), cmdline); |
| |
| if (advice_enabled(ADVICE_AM_WORK_DIR) && |
| is_empty_or_missing_file(am_path(state, "patch")) && |
| !repo_index_has_changes(the_repository, NULL, NULL)) |
| strbuf_addf(&sb, _("To record the empty patch as an empty commit, run \"%s --allow-empty\".\n"), cmdline); |
| |
| strbuf_addf(&sb, _("To restore the original branch and stop patching, run \"%s --abort\"."), cmdline); |
| |
| advise_if_enabled(ADVICE_MERGE_CONFLICT, "%s", sb.buf); |
| strbuf_release(&sb); |
| } |
| |
| exit(128); |
| } |
| |
| /** |
| * Appends signoff to the "msg" field of the am_state. |
| */ |
| static void am_append_signoff(struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len); |
| append_signoff(&sb, 0, 0); |
| state->msg = strbuf_detach(&sb, &state->msg_len); |
| } |
| |
| /** |
| * Parses `mail` using git-mailinfo, extracting its patch and authorship info. |
| * state->msg will be set to the patch message. state->author_name, |
| * state->author_email and state->author_date will be set to the patch author's |
| * name, email and date respectively. The patch body will be written to the |
| * state directory's "patch" file. |
| * |
| * Returns 1 if the patch should be skipped, 0 otherwise. |
| */ |
| static int parse_mail(struct am_state *state, const char *mail) |
| { |
| FILE *fp; |
| struct strbuf sb = STRBUF_INIT; |
| struct strbuf msg = STRBUF_INIT; |
| struct strbuf author_name = STRBUF_INIT; |
| struct strbuf author_date = STRBUF_INIT; |
| struct strbuf author_email = STRBUF_INIT; |
| int ret = 0; |
| struct mailinfo mi; |
| |
| setup_mailinfo(&mi); |
| |
| if (state->utf8) |
| mi.metainfo_charset = get_commit_output_encoding(); |
| else |
| mi.metainfo_charset = NULL; |
| |
| switch (state->keep) { |
| case KEEP_FALSE: |
| break; |
| case KEEP_TRUE: |
| mi.keep_subject = 1; |
| break; |
| case KEEP_NON_PATCH: |
| mi.keep_non_patch_brackets_in_subject = 1; |
| break; |
| default: |
| BUG("invalid value for state->keep"); |
| } |
| |
| if (state->message_id) |
| mi.add_message_id = 1; |
| |
| switch (state->scissors) { |
| case SCISSORS_UNSET: |
| break; |
| case SCISSORS_FALSE: |
| mi.use_scissors = 0; |
| break; |
| case SCISSORS_TRUE: |
| mi.use_scissors = 1; |
| break; |
| default: |
| BUG("invalid value for state->scissors"); |
| } |
| |
| switch (state->quoted_cr) { |
| case quoted_cr_unset: |
| break; |
| case quoted_cr_nowarn: |
| case quoted_cr_warn: |
| case quoted_cr_strip: |
| mi.quoted_cr = state->quoted_cr; |
| break; |
| default: |
| BUG("invalid value for state->quoted_cr"); |
| } |
| |
| mi.input = xfopen(mail, "r"); |
| mi.output = xfopen(am_path(state, "info"), "w"); |
| if (mailinfo(&mi, am_path(state, "msg"), am_path(state, "patch"))) |
| die("could not parse patch"); |
| |
| fclose(mi.input); |
| fclose(mi.output); |
| |
| if (mi.format_flowed) |
| warning(_("Patch sent with format=flowed; " |
| "space at the end of lines might be lost.")); |
| |
| /* Extract message and author information */ |
| fp = xfopen(am_path(state, "info"), "r"); |
| while (!strbuf_getline_lf(&sb, fp)) { |
| const char *x; |
| |
| if (skip_prefix(sb.buf, "Subject: ", &x)) { |
| if (msg.len) |
| strbuf_addch(&msg, '\n'); |
| strbuf_addstr(&msg, x); |
| } else if (skip_prefix(sb.buf, "Author: ", &x)) |
| strbuf_addstr(&author_name, x); |
| else if (skip_prefix(sb.buf, "Email: ", &x)) |
| strbuf_addstr(&author_email, x); |
| else if (skip_prefix(sb.buf, "Date: ", &x)) |
| strbuf_addstr(&author_date, x); |
| } |
| fclose(fp); |
| |
| /* Skip pine's internal folder data */ |
| if (!strcmp(author_name.buf, "Mail System Internal Data")) { |
| ret = 1; |
| goto finish; |
| } |
| |
| strbuf_addstr(&msg, "\n\n"); |
| strbuf_addbuf(&msg, &mi.log_message); |
| strbuf_stripspace(&msg, NULL); |
| |
| assert(!state->author_name); |
| state->author_name = strbuf_detach(&author_name, NULL); |
| |
| assert(!state->author_email); |
| state->author_email = strbuf_detach(&author_email, NULL); |
| |
| assert(!state->author_date); |
| state->author_date = strbuf_detach(&author_date, NULL); |
| |
| assert(!state->msg); |
| state->msg = strbuf_detach(&msg, &state->msg_len); |
| |
| finish: |
| strbuf_release(&msg); |
| strbuf_release(&author_date); |
| strbuf_release(&author_email); |
| strbuf_release(&author_name); |
| strbuf_release(&sb); |
| clear_mailinfo(&mi); |
| return ret; |
| } |
| |
| /** |
| * Sets commit_id to the commit hash where the mail was generated from. |
| * Returns 0 on success, -1 on failure. |
| */ |
| static int get_mail_commit_oid(struct object_id *commit_id, const char *mail) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| FILE *fp = xfopen(mail, "r"); |
| const char *x; |
| int ret = 0; |
| |
| if (strbuf_getline_lf(&sb, fp) || |
| !skip_prefix(sb.buf, "From ", &x) || |
| get_oid_hex(x, commit_id) < 0) |
| ret = -1; |
| |
| strbuf_release(&sb); |
| fclose(fp); |
| return ret; |
| } |
| |
| /** |
| * Sets state->msg, state->author_name, state->author_email, state->author_date |
| * to the commit's respective info. |
| */ |
| static void get_commit_info(struct am_state *state, struct commit *commit) |
| { |
| const char *buffer, *ident_line, *msg; |
| size_t ident_len; |
| struct ident_split id; |
| |
| buffer = repo_logmsg_reencode(the_repository, commit, NULL, |
| get_commit_output_encoding()); |
| |
| ident_line = find_commit_header(buffer, "author", &ident_len); |
| if (!ident_line) |
| die(_("missing author line in commit %s"), |
| oid_to_hex(&commit->object.oid)); |
| if (split_ident_line(&id, ident_line, ident_len) < 0) |
| die(_("invalid ident line: %.*s"), (int)ident_len, ident_line); |
| |
| assert(!state->author_name); |
| if (id.name_begin) |
| state->author_name = |
| xmemdupz(id.name_begin, id.name_end - id.name_begin); |
| else |
| state->author_name = xstrdup(""); |
| |
| assert(!state->author_email); |
| if (id.mail_begin) |
| state->author_email = |
| xmemdupz(id.mail_begin, id.mail_end - id.mail_begin); |
| else |
| state->author_email = xstrdup(""); |
| |
| assert(!state->author_date); |
| state->author_date = xstrdup(show_ident_date(&id, DATE_MODE(NORMAL))); |
| |
| assert(!state->msg); |
| msg = strstr(buffer, "\n\n"); |
| if (!msg) |
| die(_("unable to parse commit %s"), oid_to_hex(&commit->object.oid)); |
| state->msg = xstrdup(msg + 2); |
| state->msg_len = strlen(state->msg); |
| repo_unuse_commit_buffer(the_repository, commit, buffer); |
| } |
| |
| /** |
| * Writes `commit` as a patch to the state directory's "patch" file. |
| */ |
| static void write_commit_patch(const struct am_state *state, struct commit *commit) |
| { |
| struct rev_info rev_info; |
| FILE *fp; |
| |
| fp = xfopen(am_path(state, "patch"), "w"); |
| repo_init_revisions(the_repository, &rev_info, NULL); |
| rev_info.diff = 1; |
| rev_info.abbrev = 0; |
| rev_info.disable_stdin = 1; |
| rev_info.show_root_diff = 1; |
| rev_info.diffopt.output_format = DIFF_FORMAT_PATCH; |
| rev_info.no_commit_id = 1; |
| rev_info.diffopt.flags.binary = 1; |
| rev_info.diffopt.flags.full_index = 1; |
| rev_info.diffopt.use_color = 0; |
| rev_info.diffopt.file = fp; |
| rev_info.diffopt.close_file = 1; |
| add_pending_object(&rev_info, &commit->object, ""); |
| diff_setup_done(&rev_info.diffopt); |
| log_tree_commit(&rev_info, commit); |
| release_revisions(&rev_info); |
| } |
| |
| /** |
| * Writes the diff of the index against HEAD as a patch to the state |
| * directory's "patch" file. |
| */ |
| static void write_index_patch(const struct am_state *state) |
| { |
| struct tree *tree; |
| struct object_id head; |
| struct rev_info rev_info; |
| FILE *fp; |
| |
| if (!repo_get_oid(the_repository, "HEAD", &head)) { |
| struct commit *commit = lookup_commit_or_die(&head, "HEAD"); |
| tree = repo_get_commit_tree(the_repository, commit); |
| } else |
| tree = lookup_tree(the_repository, |
| the_repository->hash_algo->empty_tree); |
| |
| fp = xfopen(am_path(state, "patch"), "w"); |
| repo_init_revisions(the_repository, &rev_info, NULL); |
| rev_info.diff = 1; |
| rev_info.disable_stdin = 1; |
| rev_info.no_commit_id = 1; |
| rev_info.diffopt.output_format = DIFF_FORMAT_PATCH; |
| rev_info.diffopt.use_color = 0; |
| rev_info.diffopt.file = fp; |
| rev_info.diffopt.close_file = 1; |
| add_pending_object(&rev_info, &tree->object, ""); |
| diff_setup_done(&rev_info.diffopt); |
| run_diff_index(&rev_info, DIFF_INDEX_CACHED); |
| release_revisions(&rev_info); |
| } |
| |
| /** |
| * Like parse_mail(), but parses the mail by looking up its commit ID |
| * directly. This is used in --rebasing mode to bypass git-mailinfo's munging |
| * of patches. |
| * |
| * state->orig_commit will be set to the original commit ID. |
| * |
| * Will always return 0 as the patch should never be skipped. |
| */ |
| static int parse_mail_rebase(struct am_state *state, const char *mail) |
| { |
| struct commit *commit; |
| struct object_id commit_oid; |
| |
| if (get_mail_commit_oid(&commit_oid, mail) < 0) |
| die(_("could not parse %s"), mail); |
| |
| commit = lookup_commit_or_die(&commit_oid, mail); |
| |
| get_commit_info(state, commit); |
| |
| write_commit_patch(state, commit); |
| |
| oidcpy(&state->orig_commit, &commit_oid); |
| write_state_text(state, "original-commit", oid_to_hex(&commit_oid)); |
| refs_update_ref(get_main_ref_store(the_repository), "am", |
| "REBASE_HEAD", &commit_oid, |
| NULL, REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR); |
| |
| return 0; |
| } |
| |
| /** |
| * Applies current patch with git-apply. Returns 0 on success, -1 otherwise. If |
| * `index_file` is not NULL, the patch will be applied to that index. |
| */ |
| static int run_apply(const struct am_state *state, const char *index_file) |
| { |
| struct strvec apply_paths = STRVEC_INIT; |
| struct strvec apply_opts = STRVEC_INIT; |
| struct apply_state apply_state; |
| int res, opts_left; |
| int force_apply = 0; |
| int options = 0; |
| const char **apply_argv; |
| |
| if (init_apply_state(&apply_state, the_repository, NULL)) |
| BUG("init_apply_state() failed"); |
| |
| strvec_push(&apply_opts, "apply"); |
| strvec_pushv(&apply_opts, state->git_apply_opts.v); |
| |
| /* |
| * Build a copy that apply_parse_options() can rearrange. |
| * apply_opts.v keeps referencing the allocated strings for |
| * strvec_clear() to release. |
| */ |
| DUP_ARRAY(apply_argv, apply_opts.v, apply_opts.nr); |
| |
| opts_left = apply_parse_options(apply_opts.nr, apply_argv, |
| &apply_state, &force_apply, &options, |
| NULL); |
| |
| if (opts_left != 0) |
| die("unknown option passed through to git apply"); |
| |
| if (index_file) { |
| apply_state.index_file = index_file; |
| apply_state.cached = 1; |
| } else |
| apply_state.check_index = 1; |
| |
| /* |
| * If we are allowed to fall back on 3-way merge, don't give false |
| * errors during the initial attempt. |
| */ |
| if (state->threeway && !index_file) |
| apply_state.apply_verbosity = verbosity_silent; |
| |
| if (check_apply_state(&apply_state, force_apply)) |
| BUG("check_apply_state() failed"); |
| |
| strvec_push(&apply_paths, am_path(state, "patch")); |
| |
| res = apply_all_patches(&apply_state, apply_paths.nr, apply_paths.v, options); |
| |
| strvec_clear(&apply_paths); |
| strvec_clear(&apply_opts); |
| clear_apply_state(&apply_state); |
| free(apply_argv); |
| |
| if (res) |
| return res; |
| |
| if (index_file) { |
| /* Reload index as apply_all_patches() will have modified it. */ |
| discard_index(the_repository->index); |
| read_index_from(the_repository->index, index_file, get_git_dir()); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Builds an index that contains just the blobs needed for a 3way merge. |
| */ |
| static int build_fake_ancestor(const struct am_state *state, const char *index_file) |
| { |
| struct child_process cp = CHILD_PROCESS_INIT; |
| |
| cp.git_cmd = 1; |
| strvec_push(&cp.args, "apply"); |
| strvec_pushv(&cp.args, state->git_apply_opts.v); |
| strvec_pushf(&cp.args, "--build-fake-ancestor=%s", index_file); |
| strvec_push(&cp.args, am_path(state, "patch")); |
| |
| if (run_command(&cp)) |
| return -1; |
| |
| return 0; |
| } |
| |
| /** |
| * Attempt a threeway merge, using index_path as the temporary index. |
| */ |
| static int fall_back_threeway(const struct am_state *state, const char *index_path) |
| { |
| struct object_id orig_tree, their_tree, our_tree; |
| const struct object_id *bases[1] = { &orig_tree }; |
| struct merge_options o; |
| struct commit *result; |
| char *their_tree_name; |
| |
| if (repo_get_oid(the_repository, "HEAD", &our_tree) < 0) |
| oidcpy(&our_tree, the_hash_algo->empty_tree); |
| |
| if (build_fake_ancestor(state, index_path)) |
| return error("could not build fake ancestor"); |
| |
| discard_index(the_repository->index); |
| read_index_from(the_repository->index, index_path, get_git_dir()); |
| |
| if (write_index_as_tree(&orig_tree, the_repository->index, index_path, 0, NULL)) |
| return error(_("Repository lacks necessary blobs to fall back on 3-way merge.")); |
| |
| say(state, stdout, _("Using index info to reconstruct a base tree...")); |
| |
| if (!state->quiet) { |
| /* |
| * List paths that needed 3-way fallback, so that the user can |
| * review them with extra care to spot mismerges. |
| */ |
| struct rev_info rev_info; |
| |
| repo_init_revisions(the_repository, &rev_info, NULL); |
| rev_info.diffopt.output_format = DIFF_FORMAT_NAME_STATUS; |
| rev_info.diffopt.filter |= diff_filter_bit('A'); |
| rev_info.diffopt.filter |= diff_filter_bit('M'); |
| add_pending_oid(&rev_info, "HEAD", &our_tree, 0); |
| diff_setup_done(&rev_info.diffopt); |
| run_diff_index(&rev_info, DIFF_INDEX_CACHED); |
| release_revisions(&rev_info); |
| } |
| |
| if (run_apply(state, index_path)) |
| return error(_("Did you hand edit your patch?\n" |
| "It does not apply to blobs recorded in its index.")); |
| |
| if (write_index_as_tree(&their_tree, the_repository->index, index_path, 0, NULL)) |
| return error("could not write tree"); |
| |
| say(state, stdout, _("Falling back to patching base and 3-way merge...")); |
| |
| discard_index(the_repository->index); |
| repo_read_index(the_repository); |
| |
| /* |
| * This is not so wrong. Depending on which base we picked, orig_tree |
| * may be wildly different from ours, but their_tree has the same set of |
| * wildly different changes in parts the patch did not touch, so |
| * recursive ends up canceling them, saying that we reverted all those |
| * changes. |
| */ |
| |
| init_merge_options(&o, the_repository); |
| |
| o.branch1 = "HEAD"; |
| their_tree_name = xstrfmt("%.*s", linelen(state->msg), state->msg); |
| o.branch2 = their_tree_name; |
| o.detect_directory_renames = MERGE_DIRECTORY_RENAMES_NONE; |
| |
| if (state->quiet) |
| o.verbosity = 0; |
| |
| if (merge_recursive_generic(&o, &our_tree, &their_tree, 1, bases, &result)) { |
| repo_rerere(the_repository, state->allow_rerere_autoupdate); |
| free(their_tree_name); |
| return error(_("Failed to merge in the changes.")); |
| } |
| |
| free(their_tree_name); |
| return 0; |
| } |
| |
| /** |
| * Commits the current index with state->msg as the commit message and |
| * state->author_name, state->author_email and state->author_date as the author |
| * information. |
| */ |
| static void do_commit(const struct am_state *state) |
| { |
| struct object_id tree, parent, commit; |
| const struct object_id *old_oid; |
| struct commit_list *parents = NULL; |
| const char *reflog_msg, *author, *committer = NULL; |
| struct strbuf sb = STRBUF_INIT; |
| |
| if (!state->no_verify && run_hooks("pre-applypatch")) |
| exit(1); |
| |
| if (write_index_as_tree(&tree, the_repository->index, get_index_file(), 0, NULL)) |
| die(_("git write-tree failed to write a tree")); |
| |
| if (!repo_get_oid_commit(the_repository, "HEAD", &parent)) { |
| old_oid = &parent; |
| commit_list_insert(lookup_commit(the_repository, &parent), |
| &parents); |
| } else { |
| old_oid = NULL; |
| say(state, stderr, _("applying to an empty history")); |
| } |
| |
| author = fmt_ident(state->author_name, state->author_email, |
| WANT_AUTHOR_IDENT, |
| state->ignore_date ? NULL : state->author_date, |
| IDENT_STRICT); |
| |
| if (state->committer_date_is_author_date) |
| committer = fmt_ident(getenv("GIT_COMMITTER_NAME"), |
| getenv("GIT_COMMITTER_EMAIL"), |
| WANT_COMMITTER_IDENT, |
| state->ignore_date ? NULL |
| : state->author_date, |
| IDENT_STRICT); |
| |
| if (commit_tree_extended(state->msg, state->msg_len, &tree, parents, |
| &commit, author, committer, state->sign_commit, |
| NULL)) |
| die(_("failed to write commit object")); |
| |
| reflog_msg = getenv("GIT_REFLOG_ACTION"); |
| if (!reflog_msg) |
| reflog_msg = "am"; |
| |
| strbuf_addf(&sb, "%s: %.*s", reflog_msg, linelen(state->msg), |
| state->msg); |
| |
| refs_update_ref(get_main_ref_store(the_repository), sb.buf, "HEAD", |
| &commit, old_oid, 0, |
| UPDATE_REFS_DIE_ON_ERR); |
| |
| if (state->rebasing) { |
| FILE *fp = xfopen(am_path(state, "rewritten"), "a"); |
| |
| assert(!is_null_oid(&state->orig_commit)); |
| fprintf(fp, "%s ", oid_to_hex(&state->orig_commit)); |
| fprintf(fp, "%s\n", oid_to_hex(&commit)); |
| fclose(fp); |
| } |
| |
| run_hooks("post-applypatch"); |
| |
| strbuf_release(&sb); |
| } |
| |
| /** |
| * Validates the am_state for resuming -- the "msg" and authorship fields must |
| * be filled up. |
| */ |
| static void validate_resume_state(const struct am_state *state) |
| { |
| if (!state->msg) |
| die(_("cannot resume: %s does not exist."), |
| am_path(state, "final-commit")); |
| |
| if (!state->author_name || !state->author_email || !state->author_date) |
| die(_("cannot resume: %s does not exist."), |
| am_path(state, "author-script")); |
| } |
| |
| /** |
| * Interactively prompt the user on whether the current patch should be |
| * applied. |
| * |
| * Returns 0 if the user chooses to apply the patch, 1 if the user chooses to |
| * skip it. |
| */ |
| static int do_interactive(struct am_state *state) |
| { |
| assert(state->msg); |
| |
| for (;;) { |
| char reply[64]; |
| |
| puts(_("Commit Body is:")); |
| puts("--------------------------"); |
| printf("%s", state->msg); |
| puts("--------------------------"); |
| |
| /* |
| * TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a] |
| * in your translation. The program will only accept English |
| * input at this point. |
| */ |
| printf(_("Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all: ")); |
| if (!fgets(reply, sizeof(reply), stdin)) |
| die("unable to read from stdin; aborting"); |
| |
| if (*reply == 'y' || *reply == 'Y') { |
| return 0; |
| } else if (*reply == 'a' || *reply == 'A') { |
| state->interactive = 0; |
| return 0; |
| } else if (*reply == 'n' || *reply == 'N') { |
| return 1; |
| } else if (*reply == 'e' || *reply == 'E') { |
| struct strbuf msg = STRBUF_INIT; |
| |
| if (!launch_editor(am_path(state, "final-commit"), &msg, NULL)) { |
| free(state->msg); |
| state->msg = strbuf_detach(&msg, &state->msg_len); |
| } |
| strbuf_release(&msg); |
| } else if (*reply == 'v' || *reply == 'V') { |
| const char *pager = git_pager(1); |
| struct child_process cp = CHILD_PROCESS_INIT; |
| |
| if (!pager) |
| pager = "cat"; |
| prepare_pager_args(&cp, pager); |
| strvec_push(&cp.args, am_path(state, "patch")); |
| run_command(&cp); |
| } |
| } |
| } |
| |
| /** |
| * Applies all queued mail. |
| * |
| * If `resume` is true, we are "resuming". The "msg" and authorship fields, as |
| * well as the state directory's "patch" file is used as-is for applying the |
| * patch and committing it. |
| */ |
| static void am_run(struct am_state *state, int resume) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| unlink(am_path(state, "dirtyindex")); |
| |
| if (repo_refresh_and_write_index(the_repository, REFRESH_QUIET, 0, 0, |
| NULL, NULL, NULL) < 0) |
| die(_("unable to write index file")); |
| |
| if (repo_index_has_changes(the_repository, NULL, &sb)) { |
| write_state_bool(state, "dirtyindex", 1); |
| die(_("Dirty index: cannot apply patches (dirty: %s)"), sb.buf); |
| } |
| |
| strbuf_release(&sb); |
| |
| while (state->cur <= state->last) { |
| const char *mail = am_path(state, msgnum(state)); |
| int apply_status; |
| int to_keep; |
| |
| reset_ident_date(); |
| |
| if (!file_exists(mail)) |
| goto next; |
| |
| if (resume) { |
| validate_resume_state(state); |
| } else { |
| int skip; |
| |
| if (state->rebasing) |
| skip = parse_mail_rebase(state, mail); |
| else |
| skip = parse_mail(state, mail); |
| |
| if (skip) |
| goto next; /* mail should be skipped */ |
| |
| if (state->signoff) |
| am_append_signoff(state); |
| |
| write_author_script(state); |
| write_commit_msg(state); |
| } |
| |
| if (state->interactive && do_interactive(state)) |
| goto next; |
| |
| to_keep = 0; |
| if (is_empty_or_missing_file(am_path(state, "patch"))) { |
| switch (state->empty_type) { |
| case DROP_EMPTY_COMMIT: |
| say(state, stdout, _("Skipping: %.*s"), linelen(state->msg), state->msg); |
| goto next; |
| break; |
| case KEEP_EMPTY_COMMIT: |
| to_keep = 1; |
| say(state, stdout, _("Creating an empty commit: %.*s"), |
| linelen(state->msg), state->msg); |
| break; |
| case STOP_ON_EMPTY_COMMIT: |
| printf_ln(_("Patch is empty.")); |
| die_user_resolve(state); |
| break; |
| } |
| } |
| |
| if (run_applypatch_msg_hook(state)) |
| exit(1); |
| if (to_keep) |
| goto commit; |
| |
| say(state, stdout, _("Applying: %.*s"), linelen(state->msg), state->msg); |
| |
| apply_status = run_apply(state, NULL); |
| |
| if (apply_status && state->threeway) { |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_addstr(&sb, am_path(state, "patch-merge-index")); |
| apply_status = fall_back_threeway(state, sb.buf); |
| strbuf_release(&sb); |
| |
| /* |
| * Applying the patch to an earlier tree and merging |
| * the result may have produced the same tree as ours. |
| */ |
| if (!apply_status && |
| !repo_index_has_changes(the_repository, NULL, NULL)) { |
| say(state, stdout, _("No changes -- Patch already applied.")); |
| goto next; |
| } |
| } |
| |
| if (apply_status) { |
| printf_ln(_("Patch failed at %s %.*s"), msgnum(state), |
| linelen(state->msg), state->msg); |
| |
| if (advice_enabled(ADVICE_AM_WORK_DIR)) |
| advise(_("Use 'git am --show-current-patch=diff' to see the failed patch")); |
| |
| die_user_resolve(state); |
| } |
| |
| commit: |
| do_commit(state); |
| |
| next: |
| am_next(state); |
| |
| if (resume) |
| am_load(state); |
| resume = 0; |
| } |
| |
| if (!is_empty_or_missing_file(am_path(state, "rewritten"))) { |
| assert(state->rebasing); |
| copy_notes_for_rebase(state); |
| run_post_rewrite_hook(state); |
| } |
| |
| /* |
| * In rebasing mode, it's up to the caller to take care of |
| * housekeeping. |
| */ |
| if (!state->rebasing) { |
| am_destroy(state); |
| run_auto_maintenance(state->quiet); |
| } |
| } |
| |
| /** |
| * Resume the current am session after patch application failure. The user did |
| * all the hard work, and we do not have to do any patch application. Just |
| * trust and commit what the user has in the index and working tree. If `allow_empty` |
| * is true, commit as an empty commit when index has not changed and lacking a patch. |
| */ |
| static void am_resolve(struct am_state *state, int allow_empty) |
| { |
| validate_resume_state(state); |
| |
| say(state, stdout, _("Applying: %.*s"), linelen(state->msg), state->msg); |
| |
| if (!repo_index_has_changes(the_repository, NULL, NULL)) { |
| if (allow_empty && is_empty_or_missing_file(am_path(state, "patch"))) { |
| printf_ln(_("No changes - recorded it as an empty commit.")); |
| } else { |
| printf_ln(_("No changes - did you forget to use 'git add'?\n" |
| "If there is nothing left to stage, chances are that something else\n" |
| "already introduced the same changes; you might want to skip this patch.")); |
| die_user_resolve(state); |
| } |
| } |
| |
| if (unmerged_index(the_repository->index)) { |
| printf_ln(_("You still have unmerged paths in your index.\n" |
| "You should 'git add' each file with resolved conflicts to mark them as such.\n" |
| "You might run `git rm` on a file to accept \"deleted by them\" for it.")); |
| die_user_resolve(state); |
| } |
| |
| if (state->interactive) { |
| write_index_patch(state); |
| if (do_interactive(state)) |
| goto next; |
| } |
| |
| repo_rerere(the_repository, 0); |
| |
| do_commit(state); |
| |
| next: |
| am_next(state); |
| am_load(state); |
| am_run(state, 0); |
| } |
| |
| /** |
| * Performs a checkout fast-forward from `head` to `remote`. If `reset` is |
| * true, any unmerged entries will be discarded. Returns 0 on success, -1 on |
| * failure. |
| */ |
| static int fast_forward_to(struct tree *head, struct tree *remote, int reset) |
| { |
| struct lock_file lock_file = LOCK_INIT; |
| struct unpack_trees_options opts; |
| struct tree_desc t[2]; |
| |
| if (parse_tree(head) || parse_tree(remote)) |
| return -1; |
| |
| repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR); |
| |
| refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL, NULL); |
| |
| memset(&opts, 0, sizeof(opts)); |
| opts.head_idx = 1; |
| opts.src_index = the_repository->index; |
| opts.dst_index = the_repository->index; |
| opts.update = 1; |
| opts.merge = 1; |
| opts.reset = reset ? UNPACK_RESET_PROTECT_UNTRACKED : 0; |
| opts.preserve_ignored = 0; /* FIXME: !overwrite_ignore */ |
| opts.fn = twoway_merge; |
| init_tree_desc(&t[0], &head->object.oid, head->buffer, head->size); |
| init_tree_desc(&t[1], &remote->object.oid, remote->buffer, remote->size); |
| |
| if (unpack_trees(2, t, &opts)) { |
| rollback_lock_file(&lock_file); |
| return -1; |
| } |
| |
| if (write_locked_index(the_repository->index, &lock_file, COMMIT_LOCK)) |
| die(_("unable to write new index file")); |
| |
| return 0; |
| } |
| |
| /** |
| * Merges a tree into the index. The index's stat info will take precedence |
| * over the merged tree's. Returns 0 on success, -1 on failure. |
| */ |
| static int merge_tree(struct tree *tree) |
| { |
| struct lock_file lock_file = LOCK_INIT; |
| struct unpack_trees_options opts; |
| struct tree_desc t[1]; |
| |
| if (parse_tree(tree)) |
| return -1; |
| |
| repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR); |
| |
| memset(&opts, 0, sizeof(opts)); |
| opts.head_idx = 1; |
| opts.src_index = the_repository->index; |
| opts.dst_index = the_repository->index; |
| opts.merge = 1; |
| opts.fn = oneway_merge; |
| init_tree_desc(&t[0], &tree->object.oid, tree->buffer, tree->size); |
| |
| if (unpack_trees(1, t, &opts)) { |
| rollback_lock_file(&lock_file); |
| return -1; |
| } |
| |
| if (write_locked_index(the_repository->index, &lock_file, COMMIT_LOCK)) |
| die(_("unable to write new index file")); |
| |
| return 0; |
| } |
| |
| /** |
| * Clean the index without touching entries that are not modified between |
| * `head` and `remote`. |
| */ |
| static int clean_index(const struct object_id *head, const struct object_id *remote) |
| { |
| struct tree *head_tree, *remote_tree, *index_tree; |
| struct object_id index; |
| |
| head_tree = parse_tree_indirect(head); |
| if (!head_tree) |
| return error(_("Could not parse object '%s'."), oid_to_hex(head)); |
| |
| remote_tree = parse_tree_indirect(remote); |
| if (!remote_tree) |
| return error(_("Could not parse object '%s'."), oid_to_hex(remote)); |
| |
| repo_read_index_unmerged(the_repository); |
| |
| if (fast_forward_to(head_tree, head_tree, 1)) |
| return -1; |
| |
| if (write_index_as_tree(&index, the_repository->index, get_index_file(), 0, NULL)) |
| return -1; |
| |
| index_tree = parse_tree_indirect(&index); |
| if (!index_tree) |
| return error(_("Could not parse object '%s'."), oid_to_hex(&index)); |
| |
| if (fast_forward_to(index_tree, remote_tree, 0)) |
| return -1; |
| |
| if (merge_tree(remote_tree)) |
| return -1; |
| |
| remove_branch_state(the_repository, 0); |
| |
| return 0; |
| } |
| |
| /** |
| * Resets rerere's merge resolution metadata. |
| */ |
| static void am_rerere_clear(void) |
| { |
| struct string_list merge_rr = STRING_LIST_INIT_DUP; |
| rerere_clear(the_repository, &merge_rr); |
| string_list_clear(&merge_rr, 1); |
| } |
| |
| /** |
| * Resume the current am session by skipping the current patch. |
| */ |
| static void am_skip(struct am_state *state) |
| { |
| struct object_id head; |
| |
| am_rerere_clear(); |
| |
| if (repo_get_oid(the_repository, "HEAD", &head)) |
| oidcpy(&head, the_hash_algo->empty_tree); |
| |
| if (clean_index(&head, &head)) |
| die(_("failed to clean index")); |
| |
| if (state->rebasing) { |
| FILE *fp = xfopen(am_path(state, "rewritten"), "a"); |
| |
| assert(!is_null_oid(&state->orig_commit)); |
| fprintf(fp, "%s ", oid_to_hex(&state->orig_commit)); |
| fprintf(fp, "%s\n", oid_to_hex(&head)); |
| fclose(fp); |
| } |
| |
| am_next(state); |
| am_load(state); |
| am_run(state, 0); |
| } |
| |
| /** |
| * Returns true if it is safe to reset HEAD to the ORIG_HEAD, false otherwise. |
| * |
| * It is not safe to reset HEAD when: |
| * 1. git-am previously failed because the index was dirty. |
| * 2. HEAD has moved since git-am previously failed. |
| */ |
| static int safe_to_abort(const struct am_state *state) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| struct object_id abort_safety, head; |
| |
| if (file_exists(am_path(state, "dirtyindex"))) |
| return 0; |
| |
| if (read_state_file(&sb, state, "abort-safety", 1) > 0) { |
| if (get_oid_hex(sb.buf, &abort_safety)) |
| die(_("could not parse %s"), am_path(state, "abort-safety")); |
| } else |
| oidclr(&abort_safety); |
| strbuf_release(&sb); |
| |
| if (repo_get_oid(the_repository, "HEAD", &head)) |
| oidclr(&head); |
| |
| if (oideq(&head, &abort_safety)) |
| return 1; |
| |
| warning(_("You seem to have moved HEAD since the last 'am' failure.\n" |
| "Not rewinding to ORIG_HEAD")); |
| |
| return 0; |
| } |
| |
| /** |
| * Aborts the current am session if it is safe to do so. |
| */ |
| static void am_abort(struct am_state *state) |
| { |
| struct object_id curr_head, orig_head; |
| int has_curr_head, has_orig_head; |
| char *curr_branch; |
| |
| if (!safe_to_abort(state)) { |
| am_destroy(state); |
| return; |
| } |
| |
| am_rerere_clear(); |
| |
| curr_branch = refs_resolve_refdup(get_main_ref_store(the_repository), |
| "HEAD", 0, &curr_head, NULL); |
| has_curr_head = curr_branch && !is_null_oid(&curr_head); |
| if (!has_curr_head) |
| oidcpy(&curr_head, the_hash_algo->empty_tree); |
| |
| has_orig_head = !repo_get_oid(the_repository, "ORIG_HEAD", &orig_head); |
| if (!has_orig_head) |
| oidcpy(&orig_head, the_hash_algo->empty_tree); |
| |
| if (clean_index(&curr_head, &orig_head)) |
| die(_("failed to clean index")); |
| |
| if (has_orig_head) |
| refs_update_ref(get_main_ref_store(the_repository), |
| "am --abort", "HEAD", &orig_head, |
| has_curr_head ? &curr_head : NULL, 0, |
| UPDATE_REFS_DIE_ON_ERR); |
| else if (curr_branch) |
| refs_delete_ref(get_main_ref_store(the_repository), NULL, |
| curr_branch, NULL, REF_NO_DEREF); |
| |
| free(curr_branch); |
| am_destroy(state); |
| } |
| |
| static int show_patch(struct am_state *state, enum resume_type resume_mode) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| const char *patch_path; |
| int len; |
| |
| if (!is_null_oid(&state->orig_commit)) { |
| struct child_process cmd = CHILD_PROCESS_INIT; |
| |
| strvec_pushl(&cmd.args, "show", oid_to_hex(&state->orig_commit), |
| "--", NULL); |
| cmd.git_cmd = 1; |
| return run_command(&cmd); |
| } |
| |
| switch (resume_mode) { |
| case RESUME_SHOW_PATCH_RAW: |
| patch_path = am_path(state, msgnum(state)); |
| break; |
| case RESUME_SHOW_PATCH_DIFF: |
| patch_path = am_path(state, "patch"); |
| break; |
| default: |
| BUG("invalid mode for --show-current-patch"); |
| } |
| |
| len = strbuf_read_file(&sb, patch_path, 0); |
| if (len < 0) |
| die_errno(_("failed to read '%s'"), patch_path); |
| |
| setup_pager(); |
| write_in_full(1, sb.buf, sb.len); |
| strbuf_release(&sb); |
| return 0; |
| } |
| |
| /** |
| * parse_options() callback that validates and sets opt->value to the |
| * PATCH_FORMAT_* enum value corresponding to `arg`. |
| */ |
| static int parse_opt_patchformat(const struct option *opt, const char *arg, int unset) |
| { |
| int *opt_value = opt->value; |
| |
| if (unset) |
| *opt_value = PATCH_FORMAT_UNKNOWN; |
| else if (!strcmp(arg, "mbox")) |
| *opt_value = PATCH_FORMAT_MBOX; |
| else if (!strcmp(arg, "stgit")) |
| *opt_value = PATCH_FORMAT_STGIT; |
| else if (!strcmp(arg, "stgit-series")) |
| *opt_value = PATCH_FORMAT_STGIT_SERIES; |
| else if (!strcmp(arg, "hg")) |
| *opt_value = PATCH_FORMAT_HG; |
| else if (!strcmp(arg, "mboxrd")) |
| *opt_value = PATCH_FORMAT_MBOXRD; |
| /* |
| * Please update $__git_patchformat in git-completion.bash |
| * when you add new options |
| */ |
| else |
| return error(_("invalid value for '%s': '%s'"), |
| "--patch-format", arg); |
| return 0; |
| } |
| |
| static int parse_opt_show_current_patch(const struct option *opt, const char *arg, int unset) |
| { |
| int *opt_value = opt->value; |
| |
| BUG_ON_OPT_NEG(unset); |
| |
| if (!arg) |
| *opt_value = opt->defval; |
| else if (!strcmp(arg, "raw")) |
| *opt_value = RESUME_SHOW_PATCH_RAW; |
| else if (!strcmp(arg, "diff")) |
| *opt_value = RESUME_SHOW_PATCH_DIFF; |
| /* |
| * Please update $__git_showcurrentpatch in git-completion.bash |
| * when you add new options |
| */ |
| else |
| return error(_("invalid value for '%s': '%s'"), |
| "--show-current-patch", arg); |
| return 0; |
| } |
| |
| int cmd_am(int argc, const char **argv, const char *prefix) |
| { |
| struct am_state state; |
| int binary = -1; |
| int keep_cr = -1; |
| int patch_format = PATCH_FORMAT_UNKNOWN; |
| enum resume_type resume_mode = RESUME_FALSE; |
| int in_progress; |
| int ret = 0; |
| |
| const char * const usage[] = { |
| N_("git am [<options>] [(<mbox> | <Maildir>)...]"), |
| N_("git am [<options>] (--continue | --skip | --abort)"), |
| NULL |
| }; |
| |
| struct option options[] = { |
| OPT_BOOL('i', "interactive", &state.interactive, |
| N_("run interactively")), |
| OPT_BOOL('n', "no-verify", &state.no_verify, |
| N_("bypass pre-applypatch and applypatch-msg hooks")), |
| OPT_HIDDEN_BOOL('b', "binary", &binary, |
| N_("historical option -- no-op")), |
| OPT_BOOL('3', "3way", &state.threeway, |
| N_("allow fall back on 3way merging if needed")), |
| OPT__QUIET(&state.quiet, N_("be quiet")), |
| OPT_SET_INT('s', "signoff", &state.signoff, |
| N_("add a Signed-off-by trailer to the commit message"), |
| SIGNOFF_EXPLICIT), |
| OPT_BOOL('u', "utf8", &state.utf8, |
| N_("recode into utf8 (default)")), |
| OPT_SET_INT('k', "keep", &state.keep, |
| N_("pass -k flag to git-mailinfo"), KEEP_TRUE), |
| OPT_SET_INT(0, "keep-non-patch", &state.keep, |
| N_("pass -b flag to git-mailinfo"), KEEP_NON_PATCH), |
| OPT_BOOL('m', "message-id", &state.message_id, |
| N_("pass -m flag to git-mailinfo")), |
| OPT_SET_INT(0, "keep-cr", &keep_cr, |
| N_("pass --keep-cr flag to git-mailsplit for mbox format"), |
| 1), |
| OPT_BOOL('c', "scissors", &state.scissors, |
| N_("strip everything before a scissors line")), |
| OPT_CALLBACK_F(0, "quoted-cr", &state.quoted_cr, N_("action"), |
| N_("pass it through git-mailinfo"), |
| PARSE_OPT_NONEG, am_option_parse_quoted_cr), |
| OPT_PASSTHRU_ARGV(0, "whitespace", &state.git_apply_opts, N_("action"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_PASSTHRU_ARGV(0, "ignore-space-change", &state.git_apply_opts, NULL, |
| N_("pass it through git-apply"), |
| PARSE_OPT_NOARG), |
| OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &state.git_apply_opts, NULL, |
| N_("pass it through git-apply"), |
| PARSE_OPT_NOARG), |
| OPT_PASSTHRU_ARGV(0, "directory", &state.git_apply_opts, N_("root"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_PASSTHRU_ARGV(0, "exclude", &state.git_apply_opts, N_("path"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_PASSTHRU_ARGV(0, "include", &state.git_apply_opts, N_("path"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_PASSTHRU_ARGV('C', NULL, &state.git_apply_opts, N_("n"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_PASSTHRU_ARGV('p', NULL, &state.git_apply_opts, N_("num"), |
| N_("pass it through git-apply"), |
| 0), |
| OPT_CALLBACK(0, "patch-format", &patch_format, N_("format"), |
| N_("format the patch(es) are in"), |
| parse_opt_patchformat), |
| OPT_PASSTHRU_ARGV(0, "reject", &state.git_apply_opts, NULL, |
| N_("pass it through git-apply"), |
| PARSE_OPT_NOARG), |
| OPT_STRING(0, "resolvemsg", &state.resolvemsg, NULL, |
| N_("override error message when patch failure occurs")), |
| OPT_CMDMODE(0, "continue", &resume_mode, |
| N_("continue applying patches after resolving a conflict"), |
| RESUME_RESOLVED), |
| OPT_CMDMODE('r', "resolved", &resume_mode, |
| N_("synonyms for --continue"), |
| RESUME_RESOLVED), |
| OPT_CMDMODE(0, "skip", &resume_mode, |
| N_("skip the current patch"), |
| RESUME_SKIP), |
| OPT_CMDMODE(0, "abort", &resume_mode, |
| N_("restore the original branch and abort the patching operation"), |
| RESUME_ABORT), |
| OPT_CMDMODE(0, "quit", &resume_mode, |
| N_("abort the patching operation but keep HEAD where it is"), |
| RESUME_QUIT), |
| { OPTION_CALLBACK, 0, "show-current-patch", &resume_mode, |
| "(diff|raw)", |
| N_("show the patch being applied"), |
| PARSE_OPT_CMDMODE | PARSE_OPT_OPTARG | PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP, |
| parse_opt_show_current_patch, RESUME_SHOW_PATCH_RAW }, |
| OPT_CMDMODE(0, "allow-empty", &resume_mode, |
| N_("record the empty patch as an empty commit"), |
| RESUME_ALLOW_EMPTY), |
| OPT_BOOL(0, "committer-date-is-author-date", |
| &state.committer_date_is_author_date, |
| N_("lie about committer date")), |
| OPT_BOOL(0, "ignore-date", &state.ignore_date, |
| N_("use current timestamp for author date")), |
| OPT_RERERE_AUTOUPDATE(&state.allow_rerere_autoupdate), |
| { OPTION_STRING, 'S', "gpg-sign", &state.sign_commit, N_("key-id"), |
| N_("GPG-sign commits"), |
| PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, |
| OPT_CALLBACK_F(0, "empty", &state.empty_type, "(stop|drop|keep)", |
| N_("how to handle empty patches"), |
| PARSE_OPT_NONEG, am_option_parse_empty), |
| OPT_HIDDEN_BOOL(0, "rebasing", &state.rebasing, |
| N_("(internal use for git-rebase)")), |
| OPT_END() |
| }; |
| |
| if (argc == 2 && !strcmp(argv[1], "-h")) |
| usage_with_options(usage, options); |
| |
| git_config(git_default_config, NULL); |
| |
| am_state_init(&state); |
| |
| in_progress = am_in_progress(&state); |
| if (in_progress) |
| am_load(&state); |
| |
| argc = parse_options(argc, argv, prefix, options, usage, 0); |
| |
| if (binary >= 0) |
| fprintf_ln(stderr, _("The -b/--binary option has been a no-op for long time, and\n" |
| "it will be removed. Please do not use it anymore.")); |
| |
| /* Ensure a valid committer ident can be constructed */ |
| git_committer_info(IDENT_STRICT); |
| |
| if (repo_read_index_preload(the_repository, NULL, 0) < 0) |
| die(_("failed to read the index")); |
| |
| if (in_progress) { |
| /* |
| * Catch user error to feed us patches when there is a session |
| * in progress: |
| * |
| * 1. mbox path(s) are provided on the command-line. |
| * 2. stdin is not a tty: the user is trying to feed us a patch |
| * from standard input. This is somewhat unreliable -- stdin |
| * could be /dev/null for example and the caller did not |
| * intend to feed us a patch but wanted to continue |
| * unattended. |
| */ |
| if (argc || (resume_mode == RESUME_FALSE && !isatty(0))) |
| die(_("previous rebase directory %s still exists but mbox given."), |
| state.dir); |
| |
| if (resume_mode == RESUME_FALSE) |
| resume_mode = RESUME_APPLY; |
| |
| if (state.signoff == SIGNOFF_EXPLICIT) |
| am_append_signoff(&state); |
| } else { |
| struct strvec paths = STRVEC_INIT; |
| int i; |
| |
| /* |
| * Handle stray state directory in the independent-run case. In |
| * the --rebasing case, it is up to the caller to take care of |
| * stray directories. |
| */ |
| if (file_exists(state.dir) && !state.rebasing) { |
| if (resume_mode == RESUME_ABORT || resume_mode == RESUME_QUIT) { |
| am_destroy(&state); |
| am_state_release(&state); |
| return 0; |
| } |
| |
| die(_("Stray %s directory found.\n" |
| "Use \"git am --abort\" to remove it."), |
| state.dir); |
| } |
| |
| if (resume_mode) |
| die(_("Resolve operation not in progress, we are not resuming.")); |
| |
| for (i = 0; i < argc; i++) { |
| if (is_absolute_path(argv[i]) || !prefix) |
| strvec_push(&paths, argv[i]); |
| else |
| strvec_push(&paths, mkpath("%s/%s", prefix, argv[i])); |
| } |
| |
| if (state.interactive && !paths.nr) |
| die(_("interactive mode requires patches on the command line")); |
| |
| am_setup(&state, patch_format, paths.v, keep_cr); |
| |
| strvec_clear(&paths); |
| } |
| |
| switch (resume_mode) { |
| case RESUME_FALSE: |
| am_run(&state, 0); |
| break; |
| case RESUME_APPLY: |
| am_run(&state, 1); |
| break; |
| case RESUME_RESOLVED: |
| case RESUME_ALLOW_EMPTY: |
| am_resolve(&state, resume_mode == RESUME_ALLOW_EMPTY ? 1 : 0); |
| break; |
| case RESUME_SKIP: |
| am_skip(&state); |
| break; |
| case RESUME_ABORT: |
| am_abort(&state); |
| break; |
| case RESUME_QUIT: |
| am_rerere_clear(); |
| am_destroy(&state); |
| break; |
| case RESUME_SHOW_PATCH_RAW: |
| case RESUME_SHOW_PATCH_DIFF: |
| ret = show_patch(&state, resume_mode); |
| break; |
| default: |
| BUG("invalid resume value"); |
| } |
| |
| am_state_release(&state); |
| |
| return ret; |
| } |