From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Couder Subject: [PATCH 2/4] sequencer: add "make_patch" function to save a patch Date: Fri, 26 Jun 2009 23:08:44 +0200 Message-ID: <20090626210847.3885.18347.chriscool@tuxfamily.org> References: <20090626205319.3885.91532.chriscool@tuxfamily.org> Cc: git@vger.kernel.org, Johannes Schindelin , Stephan Beyer , Daniel Barkalow , Jakub Narebski To: Junio C Hamano X-From: git-owner@vger.kernel.org Fri Jun 26 23:09:08 2009 Return-path: Envelope-to: gcvg-git-2@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1MKIfU-0000qR-75 for gcvg-git-2@gmane.org; Fri, 26 Jun 2009 23:09:08 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755646AbZFZVI6 (ORCPT ); Fri, 26 Jun 2009 17:08:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754138AbZFZVIx (ORCPT ); Fri, 26 Jun 2009 17:08:53 -0400 Received: from smtp3-g21.free.fr ([212.27.42.3]:56318 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753892AbZFZVIv (ORCPT ); Fri, 26 Jun 2009 17:08:51 -0400 Received: from smtp3-g21.free.fr (localhost [127.0.0.1]) by smtp3-g21.free.fr (Postfix) with ESMTP id 067CD8180BC; Fri, 26 Jun 2009 23:08:44 +0200 (CEST) Received: from bureau.boubyland (gre92-7-82-243-130-161.fbx.proxad.net [82.243.130.161]) by smtp3-g21.free.fr (Postfix) with ESMTP id E17EF818109; Fri, 26 Jun 2009 23:08:41 +0200 (CEST) X-git-sha1: c0aa38bcb461b31c7811d9c69752b1d8e3fea703 X-Mailer: git-mail-commits v0.5.0 In-Reply-To: <20090626205319.3885.91532.chriscool@tuxfamily.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: This function generates an informational patch file. The "make_patch" and the "get_commit" functions are copied from the GSoC sequencer project: git://repo.or.cz/git/sbeyer.git (commit e7b8dab0c2a73ade92017a52bb1405ea1534ef20) Mentored-by: Christian Couder Mentored-by: Daniel Barkalow Signed-off-by: Christian Couder --- builtin-sequencer--helper.c | 75 ++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 74 insertions(+), 1 deletions(-) diff --git a/builtin-sequencer--helper.c b/builtin-sequencer--helper.c index 721c0d8..8d32480 100644 --- a/builtin-sequencer--helper.c +++ b/builtin-sequencer--helper.c @@ -1,15 +1,83 @@ #include "builtin.h" #include "cache.h" #include "parse-options.h" +#include "run-command.h" + +#define SEQ_DIR "rebase-merge" + +#define PATCH_FILE git_path(SEQ_DIR "/patch") static const char * const git_sequencer_helper_usage[] = { "git sequencer--helper --make-patch ", NULL }; +/* Generate purely informational patch file */ +static void make_patch(struct commit *commit) +{ + struct commit_list *parents = commit->parents; + const char **args; + struct child_process chld; + int fd = open(PATCH_FILE, O_WRONLY | O_CREAT, 0666); + if (fd < 0) + return; + + memset(&chld, 0, sizeof(chld)); + if (!parents) { + write(fd, "Root commit\n", 12); + close(fd); + return; + } else if (!parents->next) { + args = xcalloc(5, sizeof(char *)); + args[0] = "diff-tree"; + args[1] = "-p"; + args[2] = xstrdup(sha1_to_hex(parents->item->object.sha1)); + args[3] = xstrdup(sha1_to_hex(((struct object *)commit)->sha1)); + } else { + int i = 0; + int count = 1; + + for (; parents; parents = parents->next) + ++count; + args = xcalloc(count + 3, sizeof(char *)); + args[i++] = "diff"; + args[i++] = "--cc"; + args[i++] = xstrdup(sha1_to_hex(commit->object.sha1)); + + for (parents = commit->parents; parents; + parents = parents->next) + args[i++] = xstrdup(sha1_to_hex( + parents->item->object.sha1)); + } + + chld.argv = args; + chld.git_cmd = 1; + chld.out = fd; + + /* Run, ignore errors. */ + if (start_command(&chld)) + return; + finish_command(&chld); + + /* TODO: free dup'ed SHAs in argument list */ +} + +/* Return a commit object of "arg" */ +static struct commit *get_commit(const char *arg) +{ + unsigned char sha1[20]; + + if (get_sha1(arg, sha1)) { + error("Could not find '%s'", arg); + return NULL; + } + return lookup_commit_reference(sha1); +} + int cmd_sequencer__helper(int argc, const char **argv, const char *prefix) { char *commit = NULL; + struct commit *c; struct option options[] = { OPT_STRING(0, "make-patch", &commit, "commit", "create a patch from commit"), @@ -22,6 +90,11 @@ int cmd_sequencer__helper(int argc, const char **argv, const char *prefix) if (!commit) usage_with_options(git_sequencer_helper_usage, options); - /* Nothing to do yet */ + c = get_commit(commit); + if (!c) + return 1; + + make_patch(c); + return 0; } -- 1.6.3.GIT