From 752c0c24926aacbceca0d27de6ad22cbb7dd0709 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 19 Oct 2009 14:38:32 +0200 Subject: [PATCH] Add the --submodule option to the diff option family When you use the option --submodule=log you can see the submodule summaries inlined in the diff, instead of not-quite-helpful SHA-1 pairs. The format imitates what "git submodule summary" shows. To do that, /.git/objects/ is added to the alternate object databases (if that directory exists). This option was requested by Jens Lehmann at the GitTogether in Berlin. Signed-off-by: Johannes Schindelin Signed-off-by: Jens Lehmann Signed-off-by: Junio C Hamano --- Documentation/diff-options.txt | 7 ++ Makefile | 2 + diff.c | 18 ++++++ diff.h | 3 + submodule.c | 113 +++++++++++++++++++++++++++++++++ submodule.h | 8 +++ 6 files changed, 151 insertions(+) create mode 100644 submodule.c create mode 100644 submodule.h diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index 9276faeb1..e26b84706 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -87,6 +87,13 @@ endif::git-format-patch[] Show only names and status of changed files. See the description of the `--diff-filter` option on what the status letters mean. +--submodule[=]:: + Chose the output format for submodule differences. can be one of + 'short' and 'log'. 'short' just shows pairs of commit names, this format + is used when this option is not given. 'log' is the default value for this + option and lists the commits in that commit range like the 'summary' + option of linkgit:git-submodule[1] does. + --color:: Show colored diff. diff --git a/Makefile b/Makefile index 12defd4c9..efade29ea 100644 --- a/Makefile +++ b/Makefile @@ -448,6 +448,7 @@ LIB_H += sideband.h LIB_H += sigchain.h LIB_H += strbuf.h LIB_H += string-list.h +LIB_H += submodule.h LIB_H += tag.h LIB_H += transport.h LIB_H += tree.h @@ -546,6 +547,7 @@ LIB_OBJS += sideband.o LIB_OBJS += sigchain.o LIB_OBJS += strbuf.o LIB_OBJS += string-list.o +LIB_OBJS += submodule.o LIB_OBJS += symlinks.o LIB_OBJS += tag.o LIB_OBJS += trace.o diff --git a/diff.c b/diff.c index e1be18974..6c63b87a8 100644 --- a/diff.c +++ b/diff.c @@ -13,6 +13,7 @@ #include "utf8.h" #include "userdiff.h" #include "sigchain.h" +#include "submodule.h" #ifdef NO_FAST_WORKING_DIRECTORY #define FAST_WORKING_DIRECTORY 0 @@ -1453,6 +1454,17 @@ static void builtin_diff(const char *name_a, const char *a_prefix, *b_prefix; const char *textconv_one = NULL, *textconv_two = NULL; + if (DIFF_OPT_TST(o, SUBMODULE_LOG) && + (!one->mode || S_ISGITLINK(one->mode)) && + (!two->mode || S_ISGITLINK(two->mode))) { + const char *del = diff_get_color_opt(o, DIFF_FILE_OLD); + const char *add = diff_get_color_opt(o, DIFF_FILE_NEW); + show_submodule_summary(o->file, one ? one->path : two->path, + one->sha1, two->sha1, + del, add, reset); + return; + } + if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) { textconv_one = get_textconv(one); textconv_two = get_textconv(two); @@ -2640,6 +2652,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_OPT_CLR(options, ALLOW_TEXTCONV); else if (!strcmp(arg, "--ignore-submodules")) DIFF_OPT_SET(options, IGNORE_SUBMODULES); + else if (!strcmp(arg, "--submodule")) + DIFF_OPT_SET(options, SUBMODULE_LOG); + else if (!prefixcmp(arg, "--submodule=")) { + if (!strcmp(arg + 12, "log")) + DIFF_OPT_SET(options, SUBMODULE_LOG); + } /* misc options */ else if (!strcmp(arg, "-z")) diff --git a/diff.h b/diff.h index 6616877ee..2740421cf 100644 --- a/diff.h +++ b/diff.h @@ -66,6 +66,9 @@ typedef void (*diff_format_fn_t)(struct diff_queue_struct *q, #define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19) #define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20) #define DIFF_OPT_ALLOW_TEXTCONV (1 << 21) + +#define DIFF_OPT_SUBMODULE_LOG (1 << 23) + #define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag) #define DIFF_OPT_SET(opts, flag) ((opts)->flags |= DIFF_OPT_##flag) #define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag) diff --git a/submodule.c b/submodule.c new file mode 100644 index 000000000..d5fce7a88 --- /dev/null +++ b/submodule.c @@ -0,0 +1,113 @@ +#include "cache.h" +#include "submodule.h" +#include "dir.h" +#include "diff.h" +#include "commit.h" +#include "revision.h" + +int add_submodule_odb(const char *path) +{ + struct strbuf objects_directory = STRBUF_INIT; + struct alternate_object_database *alt_odb; + + strbuf_addf(&objects_directory, "%s/.git/objects/", path); + if (!is_directory(objects_directory.buf)) + return -1; + + /* avoid adding it twice */ + for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next) + if (alt_odb->name - alt_odb->base == objects_directory.len && + !strncmp(alt_odb->base, objects_directory.buf, + objects_directory.len)) + return 0; + + alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb)); + alt_odb->next = alt_odb_list; + strcpy(alt_odb->base, objects_directory.buf); + alt_odb->name = alt_odb->base + objects_directory.len; + alt_odb->name[2] = '/'; + alt_odb->name[40] = '\0'; + alt_odb->name[41] = '\0'; + alt_odb_list = alt_odb; + prepare_alt_odb(); + return 0; +} + +void show_submodule_summary(FILE *f, const char *path, + unsigned char one[20], unsigned char two[20], + const char *del, const char *add, const char *reset) +{ + struct rev_info rev; + struct commit *commit, *left = left, *right; + struct commit_list *merge_bases, *list; + const char *message = NULL; + struct strbuf sb = STRBUF_INIT; + static const char *format = " %m %s"; + int fast_forward = 0, fast_backward = 0; + + if (is_null_sha1(two)) + message = "(submodule deleted)"; + else if (add_submodule_odb(path)) + message = "(not checked out)"; + else if (is_null_sha1(one)) + message = "(new submodule)"; + else if (!(left = lookup_commit_reference(one)) || + !(right = lookup_commit_reference(two))) + message = "(commits not present)"; + + if (!message) { + init_revisions(&rev, NULL); + setup_revisions(0, NULL, &rev, NULL); + rev.left_right = 1; + rev.first_parent_only = 1; + left->object.flags |= SYMMETRIC_LEFT; + add_pending_object(&rev, &left->object, path); + add_pending_object(&rev, &right->object, path); + merge_bases = get_merge_bases(left, right, 1); + if (merge_bases) { + if (merge_bases->item == left) + fast_forward = 1; + else if (merge_bases->item == right) + fast_backward = 1; + } + for (list = merge_bases; list; list = list->next) { + list->item->object.flags |= UNINTERESTING; + add_pending_object(&rev, &list->item->object, + sha1_to_hex(list->item->object.sha1)); + } + if (prepare_revision_walk(&rev)) + message = "(revision walker failed)"; + } + + strbuf_addf(&sb, "Submodule %s %s..", path, + find_unique_abbrev(one, DEFAULT_ABBREV)); + if (!fast_backward && !fast_forward) + strbuf_addch(&sb, '.'); + strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV)); + if (message) + strbuf_addf(&sb, " %s\n", message); + else + strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); + fwrite(sb.buf, sb.len, 1, f); + + if (!message) { + while ((commit = get_revision(&rev))) { + strbuf_setlen(&sb, 0); + if (commit->object.flags & SYMMETRIC_LEFT) { + if (del) + strbuf_addstr(&sb, del); + } + else if (add) + strbuf_addstr(&sb, add); + format_commit_message(commit, format, &sb, + rev.date_mode); + if (reset) + strbuf_addstr(&sb, reset); + strbuf_addch(&sb, '\n'); + fprintf(f, "%s", sb.buf); + } + clear_commit_marks(left, ~0); + clear_commit_marks(right, ~0); + } + strbuf_release(&sb); +} diff --git a/submodule.h b/submodule.h new file mode 100644 index 000000000..4c0269d67 --- /dev/null +++ b/submodule.h @@ -0,0 +1,8 @@ +#ifndef SUBMODULE_H +#define SUBMODULE_H + +void show_submodule_summary(FILE *f, const char *path, + unsigned char one[20], unsigned char two[20], + const char *del, const char *add, const char *reset); + +#endif -- 2.30.2