be254a0ea9
This new boolean option can be used to override the default for "git fetch" and "git pull", which is to not recurse into populated submodules and fetch all new commits there too. Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
540 lines
15 KiB
C
540 lines
15 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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#include "refs.h"
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#include "string-list.h"
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struct string_list config_name_for_path;
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struct string_list config_ignore_for_name;
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static int config_fetch_recurse_submodules;
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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 set_diffopt_flags_from_submodule_config(struct diff_options *diffopt,
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const char *path)
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{
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struct string_list_item *path_option, *ignore_option;
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path_option = unsorted_string_list_lookup(&config_name_for_path, path);
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if (path_option) {
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ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util);
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if (ignore_option)
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handle_ignore_submodules_arg(diffopt, ignore_option->util);
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}
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}
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int submodule_config(const char *var, const char *value, void *cb)
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{
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if (!prefixcmp(var, "submodule."))
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return parse_submodule_config_option(var, value);
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else if (!strcmp(var, "fetch.recursesubmodules")) {
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config_fetch_recurse_submodules = git_config_bool(var, value);
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return 0;
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}
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return 0;
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}
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void gitmodules_config(void)
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{
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const char *work_tree = get_git_work_tree();
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if (work_tree) {
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struct strbuf gitmodules_path = STRBUF_INIT;
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strbuf_addstr(&gitmodules_path, work_tree);
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strbuf_addstr(&gitmodules_path, "/.gitmodules");
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git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
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strbuf_release(&gitmodules_path);
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}
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}
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int parse_submodule_config_option(const char *var, const char *value)
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{
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int len;
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struct string_list_item *config;
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struct strbuf submodname = STRBUF_INIT;
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var += 10; /* Skip "submodule." */
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len = strlen(var);
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if ((len > 5) && !strcmp(var + len - 5, ".path")) {
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strbuf_add(&submodname, var, len - 5);
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config = unsorted_string_list_lookup(&config_name_for_path, value);
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if (config)
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free(config->util);
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else
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config = string_list_append(&config_name_for_path, xstrdup(value));
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config->util = strbuf_detach(&submodname, NULL);
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strbuf_release(&submodname);
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} else if ((len > 7) && !strcmp(var + len - 7, ".ignore")) {
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if (strcmp(value, "untracked") && strcmp(value, "dirty") &&
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strcmp(value, "all") && strcmp(value, "none")) {
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warning("Invalid parameter \"%s\" for config option \"submodule.%s.ignore\"", value, var);
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return 0;
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}
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strbuf_add(&submodname, var, len - 7);
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config = unsorted_string_list_lookup(&config_ignore_for_name, submodname.buf);
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if (config)
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free(config->util);
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else
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config = string_list_append(&config_ignore_for_name,
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strbuf_detach(&submodname, NULL));
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strbuf_release(&submodname);
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config->util = xstrdup(value);
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return 0;
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}
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return 0;
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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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DIFF_OPT_CLR(diffopt, IGNORE_SUBMODULES);
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DIFF_OPT_CLR(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
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DIFF_OPT_CLR(diffopt, IGNORE_DIRTY_SUBMODULES);
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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 if (strcmp(arg, "none"))
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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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void set_config_fetch_recurse_submodules(int value)
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{
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config_fetch_recurse_submodules = value;
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}
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int fetch_populated_submodules(int num_options, const char **options,
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const char *prefix, int ignore_config,
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int quiet)
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{
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int i, result = 0, argc = 0;
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struct child_process cp;
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const char **argv;
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struct string_list_item *name_for_path;
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const char *work_tree = get_git_work_tree();
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if (!work_tree)
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return 0;
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if (!the_index.initialized)
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if (read_cache() < 0)
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die("index file corrupt");
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argv = xcalloc(num_options + 5, sizeof(const char *));
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argv[argc++] = "fetch";
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for (i = 0; i < num_options; i++)
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argv[argc++] = options[i];
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argv[argc++] = "--submodule-prefix";
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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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for (i = 0; i < active_nr; i++) {
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struct strbuf submodule_path = STRBUF_INIT;
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struct strbuf submodule_git_dir = STRBUF_INIT;
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struct strbuf submodule_prefix = STRBUF_INIT;
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struct cache_entry *ce = active_cache[i];
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const char *git_dir, *name;
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if (!S_ISGITLINK(ce->ce_mode))
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continue;
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name = ce->name;
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name_for_path = unsorted_string_list_lookup(&config_name_for_path, ce->name);
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if (name_for_path)
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name = name_for_path->util;
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if (!ignore_config) {
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if (!config_fetch_recurse_submodules)
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continue;
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}
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strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name);
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strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf);
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strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name);
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git_dir = read_gitfile_gently(submodule_git_dir.buf);
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if (!git_dir)
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git_dir = submodule_git_dir.buf;
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if (is_directory(git_dir)) {
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if (!quiet)
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printf("Fetching submodule %s%s\n", prefix, ce->name);
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cp.dir = submodule_path.buf;
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argv[argc] = submodule_prefix.buf;
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if (run_command(&cp))
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result = 1;
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}
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strbuf_release(&submodule_path);
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strbuf_release(&submodule_git_dir);
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strbuf_release(&submodule_prefix);
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}
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free(argv);
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return result;
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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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static int find_first_merges(struct object_array *result, const char *path,
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struct commit *a, struct commit *b)
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{
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int i, j;
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struct object_array merges;
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struct commit *commit;
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int contains_another;
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char merged_revision[42];
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const char *rev_args[] = { "rev-list", "--merges", "--ancestry-path",
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"--all", merged_revision, NULL };
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struct rev_info revs;
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struct setup_revision_opt rev_opts;
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memset(&merges, 0, sizeof(merges));
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memset(result, 0, sizeof(struct object_array));
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memset(&rev_opts, 0, sizeof(rev_opts));
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/* get all revisions that merge commit a */
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snprintf(merged_revision, sizeof(merged_revision), "^%s",
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sha1_to_hex(a->object.sha1));
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init_revisions(&revs, NULL);
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rev_opts.submodule = path;
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setup_revisions(sizeof(rev_args)/sizeof(char *)-1, rev_args, &revs, &rev_opts);
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/* save all revisions from the above list that contain b */
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if (prepare_revision_walk(&revs))
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die("revision walk setup failed");
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while ((commit = get_revision(&revs)) != NULL) {
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struct object *o = &(commit->object);
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if (in_merge_bases(b, &commit, 1))
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add_object_array(o, NULL, &merges);
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}
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/* Now we've got all merges that contain a and b. Prune all
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* merges that contain another found merge and save them in
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* result.
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*/
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for (i = 0; i < merges.nr; i++) {
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struct commit *m1 = (struct commit *) merges.objects[i].item;
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contains_another = 0;
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for (j = 0; j < merges.nr; j++) {
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struct commit *m2 = (struct commit *) merges.objects[j].item;
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if (i != j && in_merge_bases(m2, &m1, 1)) {
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contains_another = 1;
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break;
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}
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}
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if (!contains_another)
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add_object_array(merges.objects[i].item,
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merges.objects[i].name, result);
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}
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free(merges.objects);
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return result->nr;
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}
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static void print_commit(struct commit *commit)
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{
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struct strbuf sb = STRBUF_INIT;
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struct pretty_print_context ctx = {0};
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ctx.date_mode = DATE_NORMAL;
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format_commit_message(commit, " %h: %m %s", &sb, &ctx);
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fprintf(stderr, "%s\n", sb.buf);
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strbuf_release(&sb);
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}
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#define MERGE_WARNING(path, msg) \
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warning("Failed to merge submodule %s (%s)", path, msg);
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int merge_submodule(unsigned char result[20], const char *path,
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const unsigned char base[20], const unsigned char a[20],
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const unsigned char b[20])
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{
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struct commit *commit_base, *commit_a, *commit_b;
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int parent_count;
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struct object_array merges;
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int i;
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/* store a in result in case we fail */
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hashcpy(result, a);
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/* we can not handle deletion conflicts */
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if (is_null_sha1(base))
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return 0;
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if (is_null_sha1(a))
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return 0;
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if (is_null_sha1(b))
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return 0;
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if (add_submodule_odb(path)) {
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MERGE_WARNING(path, "not checked out");
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return 0;
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}
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if (!(commit_base = lookup_commit_reference(base)) ||
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!(commit_a = lookup_commit_reference(a)) ||
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!(commit_b = lookup_commit_reference(b))) {
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MERGE_WARNING(path, "commits not present");
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return 0;
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}
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/* check whether both changes are forward */
|
|
if (!in_merge_bases(commit_base, &commit_a, 1) ||
|
|
!in_merge_bases(commit_base, &commit_b, 1)) {
|
|
MERGE_WARNING(path, "commits don't follow merge-base");
|
|
return 0;
|
|
}
|
|
|
|
/* Case #1: a is contained in b or vice versa */
|
|
if (in_merge_bases(commit_a, &commit_b, 1)) {
|
|
hashcpy(result, b);
|
|
return 1;
|
|
}
|
|
if (in_merge_bases(commit_b, &commit_a, 1)) {
|
|
hashcpy(result, a);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Case #2: There are one or more merges that contain a and b in
|
|
* the submodule. If there is only one, then present it as a
|
|
* suggestion to the user, but leave it marked unmerged so the
|
|
* user needs to confirm the resolution.
|
|
*/
|
|
|
|
/* find commit which merges them */
|
|
parent_count = find_first_merges(&merges, path, commit_a, commit_b);
|
|
switch (parent_count) {
|
|
case 0:
|
|
MERGE_WARNING(path, "merge following commits not found");
|
|
break;
|
|
|
|
case 1:
|
|
MERGE_WARNING(path, "not fast-forward");
|
|
fprintf(stderr, "Found a possible merge resolution "
|
|
"for the submodule:\n");
|
|
print_commit((struct commit *) merges.objects[0].item);
|
|
fprintf(stderr,
|
|
"If this is correct simply add it to the index "
|
|
"for example\n"
|
|
"by using:\n\n"
|
|
" git update-index --cacheinfo 160000 %s \"%s\"\n\n"
|
|
"which will accept this suggestion.\n",
|
|
sha1_to_hex(merges.objects[0].item->sha1), path);
|
|
break;
|
|
|
|
default:
|
|
MERGE_WARNING(path, "multiple merges found");
|
|
for (i = 0; i < merges.nr; i++)
|
|
print_commit((struct commit *) merges.objects[i].item);
|
|
}
|
|
|
|
free(merges.objects);
|
|
return 0;
|
|
}
|