diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 173 |
1 files changed, 164 insertions, 9 deletions
diff --git a/submodule.c b/submodule.c index b6dec70bd1..0fd10a0fdb 100644 --- a/submodule.c +++ b/submodule.c @@ -8,12 +8,18 @@ #include "diffcore.h" #include "refs.h" #include "string-list.h" +#include "sha1-array.h" +#include "argv-array.h" static struct string_list config_name_for_path; static struct string_list config_fetch_recurse_submodules_for_name; static struct string_list config_ignore_for_name; static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND; static struct string_list changed_submodule_paths; +static int initialized_fetch_ref_tips; +static struct sha1_array ref_tips_before_fetch; +static struct sha1_array ref_tips_after_fetch; + /* * The following flag is set if the .gitmodules file is unmerged. We then * disable recursion for all submodules where .git/config doesn't have a @@ -32,7 +38,7 @@ static int add_submodule_odb(const char *path) const char *git_dir; strbuf_addf(&objects_directory, "%s/.git", path); - git_dir = read_gitfile_gently(objects_directory.buf); + git_dir = read_gitfile(objects_directory.buf); if (git_dir) { strbuf_reset(&objects_directory); strbuf_addstr(&objects_directory, git_dir); @@ -308,6 +314,114 @@ void set_config_fetch_recurse_submodules(int value) config_fetch_recurse_submodules = value; } +static int has_remote(const char *refname, const unsigned char *sha1, int flags, void *cb_data) +{ + return 1; +} + +static int submodule_needs_pushing(const char *path, const unsigned char sha1[20]) +{ + if (add_submodule_odb(path) || !lookup_commit_reference(sha1)) + return 0; + + if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { + struct child_process cp; + const char *argv[] = {"rev-list", NULL, "--not", "--remotes", "-n", "1" , NULL}; + struct strbuf buf = STRBUF_INIT; + int needs_pushing = 0; + + argv[1] = sha1_to_hex(sha1); + memset(&cp, 0, sizeof(cp)); + cp.argv = argv; + cp.env = local_repo_env; + cp.git_cmd = 1; + cp.no_stdin = 1; + cp.out = -1; + cp.dir = path; + if (start_command(&cp)) + die("Could not run 'git rev-list %s --not --remotes -n 1' command in submodule %s", + sha1_to_hex(sha1), path); + if (strbuf_read(&buf, cp.out, 41)) + needs_pushing = 1; + finish_command(&cp); + close(cp.out); + strbuf_release(&buf); + return needs_pushing; + } + + return 0; +} + +static void collect_submodules_from_diff(struct diff_queue_struct *q, + struct diff_options *options, + void *data) +{ + int i; + int *needs_pushing = data; + + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + if (!S_ISGITLINK(p->two->mode)) + continue; + if (submodule_needs_pushing(p->two->path, p->two->sha1)) { + *needs_pushing = 1; + break; + } + } +} + + +static void commit_need_pushing(struct commit *commit, struct commit_list *parent, int *needs_pushing) +{ + const unsigned char (*parents)[20]; + unsigned int i, n; + struct rev_info rev; + + n = commit_list_count(parent); + parents = xmalloc(n * sizeof(*parents)); + + for (i = 0; i < n; i++) { + hashcpy((unsigned char *)(parents + i), parent->item->object.sha1); + parent = parent->next; + } + + init_revisions(&rev, NULL); + rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; + rev.diffopt.format_callback = collect_submodules_from_diff; + rev.diffopt.format_callback_data = needs_pushing; + diff_tree_combined(commit->object.sha1, parents, n, 1, &rev); + + free(parents); +} + +int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remotes_name) +{ + struct rev_info rev; + struct commit *commit; + const char *argv[] = {NULL, NULL, "--not", "NULL", NULL}; + int argc = ARRAY_SIZE(argv) - 1; + char *sha1_copy; + int needs_pushing = 0; + struct strbuf remotes_arg = STRBUF_INIT; + + strbuf_addf(&remotes_arg, "--remotes=%s", remotes_name); + init_revisions(&rev, NULL); + sha1_copy = xstrdup(sha1_to_hex(new_sha1)); + argv[1] = sha1_copy; + argv[3] = remotes_arg.buf; + setup_revisions(argc, argv, &rev, NULL); + if (prepare_revision_walk(&rev)) + die("revision walk setup failed"); + + while ((commit = get_revision(&rev)) && !needs_pushing) + commit_need_pushing(commit, commit->parents, &needs_pushing); + + free(sha1_copy); + strbuf_release(&remotes_arg); + + return needs_pushing; +} + static int is_submodule_commit_present(const char *path, unsigned char sha1[20]) { int is_present = 0; @@ -366,16 +480,46 @@ static void submodule_collect_changed_cb(struct diff_queue_struct *q, } } +static int add_sha1_to_array(const char *ref, const unsigned char *sha1, + int flags, void *data) +{ + sha1_array_append(data, sha1); + return 0; +} + void check_for_new_submodule_commits(unsigned char new_sha1[20]) { + if (!initialized_fetch_ref_tips) { + for_each_ref(add_sha1_to_array, &ref_tips_before_fetch); + initialized_fetch_ref_tips = 1; + } + + sha1_array_append(&ref_tips_after_fetch, new_sha1); +} + +static void add_sha1_to_argv(const unsigned char sha1[20], void *data) +{ + argv_array_push(data, sha1_to_hex(sha1)); +} + +static void calculate_changed_submodule_paths(void) +{ struct rev_info rev; struct commit *commit; - const char *argv[] = {NULL, NULL, "--not", "--all", NULL}; - int argc = ARRAY_SIZE(argv) - 1; + struct argv_array argv = ARGV_ARRAY_INIT; + + /* No need to check if there are no submodules configured */ + if (!config_name_for_path.nr) + return; init_revisions(&rev, NULL); - argv[1] = xstrdup(sha1_to_hex(new_sha1)); - setup_revisions(argc, argv, &rev, NULL); + argv_array_push(&argv, "--"); /* argv[0] program name */ + sha1_array_for_each_unique(&ref_tips_after_fetch, + add_sha1_to_argv, &argv); + argv_array_push(&argv, "--not"); + sha1_array_for_each_unique(&ref_tips_before_fetch, + add_sha1_to_argv, &argv); + setup_revisions(argv.argc, argv.argv, &rev, NULL); if (prepare_revision_walk(&rev)) die("revision walk setup failed"); @@ -388,6 +532,7 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20]) while (parent) { struct diff_options diff_opts; diff_setup(&diff_opts); + DIFF_OPT_SET(&diff_opts, RECURSIVE); diff_opts.output_format |= DIFF_FORMAT_CALLBACK; diff_opts.format_callback = submodule_collect_changed_cb; if (diff_setup_done(&diff_opts) < 0) @@ -398,7 +543,11 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20]) parent = parent->next; } } - free((char *)argv[1]); + + argv_array_clear(&argv); + sha1_array_clear(&ref_tips_before_fetch); + sha1_array_clear(&ref_tips_after_fetch); + initialized_fetch_ref_tips = 0; } int fetch_populated_submodules(int num_options, const char **options, @@ -432,6 +581,8 @@ int fetch_populated_submodules(int num_options, const char **options, cp.git_cmd = 1; cp.no_stdin = 1; + calculate_changed_submodule_paths(); + for (i = 0; i < active_nr; i++) { struct strbuf submodule_path = STRBUF_INIT; struct strbuf submodule_git_dir = STRBUF_INIT; @@ -478,7 +629,7 @@ int fetch_populated_submodules(int num_options, const char **options, strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name); strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf); strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name); - git_dir = read_gitfile_gently(submodule_git_dir.buf); + git_dir = read_gitfile(submodule_git_dir.buf); if (!git_dir) git_dir = submodule_git_dir.buf; if (is_directory(git_dir)) { @@ -516,7 +667,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) const char *git_dir; strbuf_addf(&buf, "%s/.git", path); - git_dir = read_gitfile_gently(buf.buf); + git_dir = read_gitfile(buf.buf); if (!git_dir) git_dir = buf.buf; if (!is_directory(git_dir)) { @@ -643,7 +794,7 @@ static void print_commit(struct commit *commit) int merge_submodule(unsigned char result[20], const char *path, const unsigned char base[20], const unsigned char a[20], - const unsigned char b[20]) + const unsigned char b[20], int search) { struct commit *commit_base, *commit_a, *commit_b; int parent_count; @@ -698,6 +849,10 @@ int merge_submodule(unsigned char result[20], const char *path, * user needs to confirm the resolution. */ + /* Skip the search if makes no sense to the calling context. */ + if (!search) + return 0; + /* find commit which merges them */ parent_count = find_first_merges(&merges, path, commit_a, commit_b); switch (parent_count) { |