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Diffstat (limited to 'submodule.c')
-rw-r--r--submodule.c290
1 files changed, 232 insertions, 58 deletions
diff --git a/submodule.c b/submodule.c
index 6f1c10722f..b6dec70bd1 100644
--- a/submodule.c
+++ b/submodule.c
@@ -9,10 +9,20 @@
#include "refs.h"
#include "string-list.h"
-struct string_list config_name_for_path;
-struct string_list config_fetch_recurse_submodules_for_name;
-struct string_list config_ignore_for_name;
-static int config_fetch_recurse_submodules;
+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;
+/*
+ * 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
+ * matching config entry because we can't guess what might be configured in
+ * .gitmodules unless the user resolves the conflict. When a command line
+ * option is given (which always overrides configuration) this flag will be
+ * ignored.
+ */
+static int gitmodules_is_unmerged;
static int add_submodule_odb(const char *path)
{
@@ -62,6 +72,8 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt,
ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util);
if (ignore_option)
handle_ignore_submodules_arg(diffopt, ignore_option->util);
+ else if (gitmodules_is_unmerged)
+ DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES);
}
}
@@ -70,7 +82,7 @@ int submodule_config(const char *var, const char *value, void *cb)
if (!prefixcmp(var, "submodule."))
return parse_submodule_config_option(var, value);
else if (!strcmp(var, "fetch.recursesubmodules")) {
- config_fetch_recurse_submodules = git_config_bool(var, value);
+ config_fetch_recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
return 0;
}
return 0;
@@ -81,9 +93,24 @@ void gitmodules_config(void)
const char *work_tree = get_git_work_tree();
if (work_tree) {
struct strbuf gitmodules_path = STRBUF_INIT;
+ int pos;
strbuf_addstr(&gitmodules_path, work_tree);
strbuf_addstr(&gitmodules_path, "/.gitmodules");
- git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
+ if (read_cache() < 0)
+ die("index file corrupt");
+ pos = cache_name_pos(".gitmodules", 11);
+ if (pos < 0) { /* .gitmodules not found or isn't merged */
+ pos = -1 - pos;
+ if (active_nr > pos) { /* there is a .gitmodules */
+ const struct cache_entry *ce = active_cache[pos];
+ if (ce_namelen(ce) == 11 &&
+ !memcmp(ce->name, ".gitmodules", 11))
+ gitmodules_is_unmerged = 1;
+ }
+ }
+
+ if (!gitmodules_is_unmerged)
+ git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
strbuf_release(&gitmodules_path);
}
}
@@ -112,7 +139,7 @@ int parse_submodule_config_option(const char *var, const char *value)
if (!config)
config = string_list_append(&config_fetch_recurse_submodules_for_name,
strbuf_detach(&submodname, NULL));
- config->util = git_config_bool(var, value) ? (void *)1 : NULL;
+ config->util = (void *)(intptr_t)parse_fetch_recurse_submodules_arg(var, value);
strbuf_release(&submodname);
} else if ((len > 7) && !strcmp(var + len - 7, ".ignore")) {
if (strcmp(value, "untracked") && strcmp(value, "dirty") &&
@@ -152,17 +179,83 @@ void handle_ignore_submodules_arg(struct diff_options *diffopt,
die("bad --ignore-submodules argument: %s", arg);
}
+static int prepare_submodule_summary(struct rev_info *rev, const char *path,
+ struct commit *left, struct commit *right,
+ int *fast_forward, int *fast_backward)
+{
+ struct commit_list *merge_bases, *list;
+
+ 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));
+ }
+ return prepare_revision_walk(rev);
+}
+
+static void print_submodule_summary(struct rev_info *rev, FILE *f,
+ const char *del, const char *add, const char *reset)
+{
+ static const char format[] = " %m %s";
+ struct strbuf sb = STRBUF_INIT;
+ struct commit *commit;
+
+ while ((commit = get_revision(rev))) {
+ struct pretty_print_context ctx = {0};
+ ctx.date_mode = rev->date_mode;
+ 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, &ctx);
+ if (reset)
+ strbuf_addstr(&sb, reset);
+ strbuf_addch(&sb, '\n');
+ fprintf(f, "%s", sb.buf);
+ }
+ strbuf_release(&sb);
+}
+
+int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
+{
+ switch (git_config_maybe_bool(opt, arg)) {
+ case 1:
+ return RECURSE_SUBMODULES_ON;
+ case 0:
+ return RECURSE_SUBMODULES_OFF;
+ default:
+ if (!strcmp(arg, "on-demand"))
+ return RECURSE_SUBMODULES_ON_DEMAND;
+ die("bad %s argument: %s", opt, arg);
+ }
+}
+
void show_submodule_summary(FILE *f, const char *path,
unsigned char one[20], unsigned char two[20],
unsigned dirty_submodule,
const char *del, const char *add, const char *reset)
{
struct rev_info rev;
- struct commit *commit, *left = left, *right = right;
- struct commit_list *merge_bases, *list;
+ struct commit *left = left, *right = right;
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))
@@ -175,29 +268,10 @@ void show_submodule_summary(FILE *f, const char *path,
!(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)";
- }
+ if (!message &&
+ prepare_submodule_summary(&rev, path, left, right,
+ &fast_forward, &fast_backward))
+ message = "(revision walker failed)";
if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
fprintf(f, "Submodule %s contains untracked content\n", path);
@@ -221,25 +295,11 @@ void show_submodule_summary(FILE *f, const char *path,
fwrite(sb.buf, sb.len, 1, f);
if (!message) {
- while ((commit = get_revision(&rev))) {
- struct pretty_print_context ctx = {0};
- ctx.date_mode = rev.date_mode;
- 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, &ctx);
- if (reset)
- strbuf_addstr(&sb, reset);
- strbuf_addch(&sb, '\n');
- fprintf(f, "%s", sb.buf);
- }
+ print_submodule_summary(&rev, f, del, add, reset);
clear_commit_marks(left, ~0);
clear_commit_marks(right, ~0);
}
+
strbuf_release(&sb);
}
@@ -248,27 +308,122 @@ void set_config_fetch_recurse_submodules(int value)
config_fetch_recurse_submodules = value;
}
+static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
+{
+ int is_present = 0;
+ if (!add_submodule_odb(path) && lookup_commit_reference(sha1)) {
+ /* Even if the submodule is checked out and the commit is
+ * present, make sure it is reachable from a ref. */
+ struct child_process cp;
+ const char *argv[] = {"rev-list", "-n", "1", NULL, "--not", "--all", NULL};
+ struct strbuf buf = STRBUF_INIT;
+
+ argv[3] = 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 (!run_command(&cp) && !strbuf_read(&buf, cp.out, 1024))
+ is_present = 1;
+
+ close(cp.out);
+ strbuf_release(&buf);
+ }
+ return is_present;
+}
+
+static void submodule_collect_changed_cb(struct diff_queue_struct *q,
+ struct diff_options *options,
+ void *data)
+{
+ int i;
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ if (!S_ISGITLINK(p->two->mode))
+ continue;
+
+ if (S_ISGITLINK(p->one->mode)) {
+ /* NEEDSWORK: We should honor the name configured in
+ * the .gitmodules file of the commit we are examining
+ * here to be able to correctly follow submodules
+ * being moved around. */
+ struct string_list_item *path;
+ path = unsorted_string_list_lookup(&changed_submodule_paths, p->two->path);
+ if (!path && !is_submodule_commit_present(p->two->path, p->two->sha1))
+ string_list_append(&changed_submodule_paths, xstrdup(p->two->path));
+ } else {
+ /* Submodule is new or was moved here */
+ /* NEEDSWORK: When the .git directories of submodules
+ * live inside the superprojects .git directory some
+ * day we should fetch new submodules directly into
+ * that location too when config or options request
+ * that so they can be checked out from there. */
+ continue;
+ }
+ }
+}
+
+void check_for_new_submodule_commits(unsigned char new_sha1[20])
+{
+ struct rev_info rev;
+ struct commit *commit;
+ const char *argv[] = {NULL, NULL, "--not", "--all", NULL};
+ int argc = ARRAY_SIZE(argv) - 1;
+
+ init_revisions(&rev, NULL);
+ argv[1] = xstrdup(sha1_to_hex(new_sha1));
+ setup_revisions(argc, argv, &rev, NULL);
+ if (prepare_revision_walk(&rev))
+ die("revision walk setup failed");
+
+ /*
+ * Collect all submodules (whether checked out or not) for which new
+ * commits have been recorded upstream in "changed_submodule_paths".
+ */
+ while ((commit = get_revision(&rev))) {
+ struct commit_list *parent = commit->parents;
+ while (parent) {
+ struct diff_options diff_opts;
+ diff_setup(&diff_opts);
+ diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
+ diff_opts.format_callback = submodule_collect_changed_cb;
+ if (diff_setup_done(&diff_opts) < 0)
+ die("diff_setup_done failed");
+ diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
+ diffcore_std(&diff_opts);
+ diff_flush(&diff_opts);
+ parent = parent->next;
+ }
+ }
+ free((char *)argv[1]);
+}
+
int fetch_populated_submodules(int num_options, const char **options,
- const char *prefix, int ignore_config,
+ const char *prefix, int command_line_option,
int quiet)
{
- int i, result = 0, argc = 0;
+ int i, result = 0, argc = 0, default_argc;
struct child_process cp;
const char **argv;
struct string_list_item *name_for_path;
const char *work_tree = get_git_work_tree();
if (!work_tree)
- return 0;
+ goto out;
if (!the_index.initialized)
if (read_cache() < 0)
die("index file corrupt");
- /* 4: "fetch" (options) "--submodule-prefix" prefix NULL */
- argv = xcalloc(num_options + 4, sizeof(const char *));
+ /* 6: "fetch" (options) --recurse-submodules-default default "--submodule-prefix" prefix NULL */
+ argv = xcalloc(num_options + 6, sizeof(const char *));
argv[argc++] = "fetch";
for (i = 0; i < num_options; i++)
argv[argc++] = options[i];
+ argv[argc++] = "--recurse-submodules-default";
+ default_argc = argc++;
argv[argc++] = "--submodule-prefix";
memset(&cp, 0, sizeof(cp));
@@ -282,7 +437,7 @@ int fetch_populated_submodules(int num_options, const char **options,
struct strbuf submodule_git_dir = STRBUF_INIT;
struct strbuf submodule_prefix = STRBUF_INIT;
struct cache_entry *ce = active_cache[i];
- const char *git_dir, *name;
+ const char *git_dir, *name, *default_argv;
if (!S_ISGITLINK(ce->ce_mode))
continue;
@@ -292,16 +447,32 @@ int fetch_populated_submodules(int num_options, const char **options,
if (name_for_path)
name = name_for_path->util;
- if (!ignore_config) {
+ default_argv = "yes";
+ if (command_line_option == RECURSE_SUBMODULES_DEFAULT) {
struct string_list_item *fetch_recurse_submodules_option;
fetch_recurse_submodules_option = unsorted_string_list_lookup(&config_fetch_recurse_submodules_for_name, name);
if (fetch_recurse_submodules_option) {
- if (!fetch_recurse_submodules_option->util)
+ if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_OFF)
continue;
+ if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_ON_DEMAND) {
+ if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
+ continue;
+ default_argv = "on-demand";
+ }
} else {
- if (!config_fetch_recurse_submodules)
+ if ((config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF) ||
+ gitmodules_is_unmerged)
continue;
+ if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) {
+ if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
+ continue;
+ default_argv = "on-demand";
+ }
}
+ } else if (command_line_option == RECURSE_SUBMODULES_ON_DEMAND) {
+ if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name))
+ continue;
+ default_argv = "on-demand";
}
strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name);
@@ -314,6 +485,7 @@ int fetch_populated_submodules(int num_options, const char **options,
if (!quiet)
printf("Fetching submodule %s%s\n", prefix, ce->name);
cp.dir = submodule_path.buf;
+ argv[default_argc] = default_argv;
argv[argc] = submodule_prefix.buf;
if (run_command(&cp))
result = 1;
@@ -323,6 +495,8 @@ int fetch_populated_submodules(int num_options, const char **options,
strbuf_release(&submodule_prefix);
}
free(argv);
+out:
+ string_list_clear(&changed_submodule_paths, 1);
return result;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 01:59:04 +0000