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![Jens Lehmann](/assets/img/avatar_default.png)
In some use cases it is not desirable that "git status" considers submodules that only contain untracked content as dirty. This may happen e.g. when the submodule is not under the developers control and not all build generated files have been added to .gitignore by the upstream developers. Using the "untracked" parameter for the "--ignore-submodules" option disables checking for untracked content and lets git diff report them as changed only when they have new commits or modified content. Sometimes it is not wanted to have submodules show up as changed when they just contain changes to their work tree (this was the behavior before 1.7.0). An example for that are scripts which just want to check for submodule commits while ignoring any changes to the work tree. Also users having large submodules known not to change might want to use this option, as the - sometimes substantial - time it takes to scan the submodule work tree(s) is saved when using the "dirty" parameter. And if you want to ignore any changes to submodules, you can now do that by using this option without parameters or with "all" (when the config option status.submodulesummary is set, using "all" will also suppress the output of the submodule summary). A new function handle_ignore_submodules_arg() is introduced to parse this option new to "git status" in a single location, as "git diff" already knew it. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
221 lines
5.8 KiB
C
221 lines
5.8 KiB
C
#include "cache.h"
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#include "submodule.h"
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#include "dir.h"
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#include "diff.h"
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#include "commit.h"
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#include "revision.h"
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#include "run-command.h"
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#include "diffcore.h"
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static int add_submodule_odb(const char *path)
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{
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struct strbuf objects_directory = STRBUF_INIT;
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struct alternate_object_database *alt_odb;
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int ret = 0;
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const char *git_dir;
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strbuf_addf(&objects_directory, "%s/.git", path);
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git_dir = read_gitfile_gently(objects_directory.buf);
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if (git_dir) {
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strbuf_reset(&objects_directory);
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strbuf_addstr(&objects_directory, git_dir);
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}
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strbuf_addstr(&objects_directory, "/objects/");
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if (!is_directory(objects_directory.buf)) {
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ret = -1;
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goto done;
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}
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/* avoid adding it twice */
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for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next)
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if (alt_odb->name - alt_odb->base == objects_directory.len &&
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!strncmp(alt_odb->base, objects_directory.buf,
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objects_directory.len))
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goto done;
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alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb));
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alt_odb->next = alt_odb_list;
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strcpy(alt_odb->base, objects_directory.buf);
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alt_odb->name = alt_odb->base + objects_directory.len;
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alt_odb->name[2] = '/';
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alt_odb->name[40] = '\0';
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alt_odb->name[41] = '\0';
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alt_odb_list = alt_odb;
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prepare_alt_odb();
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done:
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strbuf_release(&objects_directory);
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return ret;
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}
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void handle_ignore_submodules_arg(struct diff_options *diffopt,
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const char *arg)
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{
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if (!strcmp(arg, "all"))
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DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES);
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else if (!strcmp(arg, "untracked"))
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DIFF_OPT_SET(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
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else if (!strcmp(arg, "dirty"))
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DIFF_OPT_SET(diffopt, IGNORE_DIRTY_SUBMODULES);
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else
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die("bad --ignore-submodules argument: %s", arg);
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}
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void show_submodule_summary(FILE *f, const char *path,
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unsigned char one[20], unsigned char two[20],
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unsigned dirty_submodule,
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const char *del, const char *add, const char *reset)
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{
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struct rev_info rev;
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struct commit *commit, *left = left, *right = right;
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struct commit_list *merge_bases, *list;
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const char *message = NULL;
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struct strbuf sb = STRBUF_INIT;
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static const char *format = " %m %s";
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int fast_forward = 0, fast_backward = 0;
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if (is_null_sha1(two))
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message = "(submodule deleted)";
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else if (add_submodule_odb(path))
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message = "(not checked out)";
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else if (is_null_sha1(one))
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message = "(new submodule)";
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else if (!(left = lookup_commit_reference(one)) ||
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!(right = lookup_commit_reference(two)))
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message = "(commits not present)";
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if (!message) {
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init_revisions(&rev, NULL);
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setup_revisions(0, NULL, &rev, NULL);
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rev.left_right = 1;
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rev.first_parent_only = 1;
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left->object.flags |= SYMMETRIC_LEFT;
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add_pending_object(&rev, &left->object, path);
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add_pending_object(&rev, &right->object, path);
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merge_bases = get_merge_bases(left, right, 1);
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if (merge_bases) {
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if (merge_bases->item == left)
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fast_forward = 1;
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else if (merge_bases->item == right)
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fast_backward = 1;
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}
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for (list = merge_bases; list; list = list->next) {
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list->item->object.flags |= UNINTERESTING;
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add_pending_object(&rev, &list->item->object,
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sha1_to_hex(list->item->object.sha1));
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}
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if (prepare_revision_walk(&rev))
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message = "(revision walker failed)";
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}
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if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
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fprintf(f, "Submodule %s contains untracked content\n", path);
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if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
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fprintf(f, "Submodule %s contains modified content\n", path);
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if (!hashcmp(one, two)) {
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strbuf_release(&sb);
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return;
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}
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strbuf_addf(&sb, "Submodule %s %s..", path,
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find_unique_abbrev(one, DEFAULT_ABBREV));
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if (!fast_backward && !fast_forward)
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strbuf_addch(&sb, '.');
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strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV));
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if (message)
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strbuf_addf(&sb, " %s\n", message);
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else
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strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : "");
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fwrite(sb.buf, sb.len, 1, f);
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if (!message) {
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while ((commit = get_revision(&rev))) {
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struct pretty_print_context ctx = {0};
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ctx.date_mode = rev.date_mode;
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strbuf_setlen(&sb, 0);
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if (commit->object.flags & SYMMETRIC_LEFT) {
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if (del)
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strbuf_addstr(&sb, del);
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}
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else if (add)
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strbuf_addstr(&sb, add);
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format_commit_message(commit, format, &sb, &ctx);
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if (reset)
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strbuf_addstr(&sb, reset);
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strbuf_addch(&sb, '\n');
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fprintf(f, "%s", sb.buf);
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}
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clear_commit_marks(left, ~0);
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clear_commit_marks(right, ~0);
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}
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strbuf_release(&sb);
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}
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unsigned is_submodule_modified(const char *path, int ignore_untracked)
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{
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ssize_t len;
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struct child_process cp;
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const char *argv[] = {
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"status",
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"--porcelain",
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NULL,
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NULL,
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};
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struct strbuf buf = STRBUF_INIT;
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unsigned dirty_submodule = 0;
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const char *line, *next_line;
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const char *git_dir;
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strbuf_addf(&buf, "%s/.git", path);
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git_dir = read_gitfile_gently(buf.buf);
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if (!git_dir)
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git_dir = buf.buf;
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if (!is_directory(git_dir)) {
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strbuf_release(&buf);
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/* The submodule is not checked out, so it is not modified */
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return 0;
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}
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strbuf_reset(&buf);
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if (ignore_untracked)
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argv[2] = "-uno";
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memset(&cp, 0, sizeof(cp));
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cp.argv = argv;
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cp.env = local_repo_env;
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cp.git_cmd = 1;
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cp.no_stdin = 1;
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cp.out = -1;
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cp.dir = path;
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if (start_command(&cp))
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die("Could not run git status --porcelain");
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len = strbuf_read(&buf, cp.out, 1024);
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line = buf.buf;
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while (len > 2) {
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if ((line[0] == '?') && (line[1] == '?')) {
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dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED;
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if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
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break;
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} else {
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dirty_submodule |= DIRTY_SUBMODULE_MODIFIED;
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if (ignore_untracked ||
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(dirty_submodule & DIRTY_SUBMODULE_UNTRACKED))
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break;
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}
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next_line = strchr(line, '\n');
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if (!next_line)
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break;
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next_line++;
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len -= (next_line - line);
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line = next_line;
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}
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close(cp.out);
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if (finish_command(&cp))
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die("git status --porcelain failed");
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strbuf_release(&buf);
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return dirty_submodule;
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}
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