Most of the submodule operations work on a set of submodules.
Calculating and using this set is usually done via:
module_list "$@" | {
while read mode sha1 stage sm_path
do
# the actual operation
done
}
Currently the function `module_list` is implemented in the
git-submodule.sh as a shell script wrapping a perl script.
The rewrite is in C, such that it is faster and can later be
easily adapted when other functions are rewritten in C.
Signed-off-by: Stefan Beller <sbel...@google.com>
---
Makefile | 1 +
builtin.h | 1 +
builtin/submodule--helper.c | 99 +++++++++++++++++++++++++++++++++++++++++++++
git.c | 1 +
4 files changed, 102 insertions(+)
create mode 100644 builtin/submodule--helper.c
diff --git a/Makefile b/Makefile
index 8c3c724..6fb7484 100644
--- a/Makefile
+++ b/Makefile
@@ -898,6 +898,7 @@ BUILTIN_OBJS += builtin/shortlog.o
BUILTIN_OBJS += builtin/show-branch.o
BUILTIN_OBJS += builtin/show-ref.o
BUILTIN_OBJS += builtin/stripspace.o
+BUILTIN_OBJS += builtin/submodule--helper.o
BUILTIN_OBJS += builtin/symbolic-ref.o
BUILTIN_OBJS += builtin/tag.o
BUILTIN_OBJS += builtin/unpack-file.o
diff --git a/builtin.h b/builtin.h
index 9e04f97..7bf9597 100644
--- a/builtin.h
+++ b/builtin.h
@@ -118,6 +118,7 @@ extern int cmd_show(int argc, const char **argv, const char
*prefix);
extern int cmd_show_branch(int argc, const char **argv, const char *prefix);
extern int cmd_status(int argc, const char **argv, const char *prefix);
extern int cmd_stripspace(int argc, const char **argv, const char *prefix);
+extern int cmd_submodule__helper(int argc, const char **argv, const char
*prefix);
extern int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);
extern int cmd_tag(int argc, const char **argv, const char *prefix);
extern int cmd_tar_tree(int argc, const char **argv, const char *prefix);
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
new file mode 100644
index 0000000..2e24fdc
--- /dev/null
+++ b/builtin/submodule--helper.c
@@ -0,0 +1,99 @@
+#include "builtin.h"
+#include "cache.h"
+#include "parse-options.h"
+#include "quote.h"
+#include "pathspec.h"
+#include "dir.h"
+
+static const char * const git_submodule_helper_usage[] = {
+ N_("git submodule--helper --module_list [<path>...]"),
+ NULL
+};
+
+int module_list(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ static struct pathspec pathspec;
+ const struct cache_entry **ce_entries = NULL;
+ int alloc = 0, used = 0;
+ char *ps_matched = NULL;
+ char *max_prefix;
+ int max_prefix_len;
+ struct string_list already_printed = STRING_LIST_INIT_NODUP;
+
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_FULL,
+ prefix, argv);
+
+ /* Find common prefix for all pathspec's */
+ max_prefix = common_prefix(&pathspec);
+ max_prefix_len = max_prefix ? strlen(max_prefix) : 0;
+
+ if (pathspec.nr)
+ ps_matched = xcalloc(1, pathspec.nr);
+
+ if (read_cache() < 0)
+ die("index file corrupt");
+
+ for (i = 0; i < active_nr; i++) {
+ const struct cache_entry *ce = active_cache[i];
+
+ if (!match_pathspec(&pathspec, ce->name, ce_namelen(ce),
+ max_prefix_len, ps_matched,
+ S_ISGITLINK(ce->ce_mode) |
S_ISDIR(ce->ce_mode)))
+ continue;
+
+ if (S_ISGITLINK(ce->ce_mode)) {
+ ALLOC_GROW(ce_entries, used + 1, alloc);
+ ce_entries[used++] = ce;
+ }
+ }
+
+ if (ps_matched && report_path_error(ps_matched, &pathspec, prefix)) {
+ printf("#unmatched\n");
+ return 1;
+ }
+
+ for (i = 0; i < used; i++) {
+ const struct cache_entry *ce = ce_entries[i];
+
+ if (string_list_has_string(&already_printed, ce->name))
+ continue;
+
+ if (ce_stage(ce)) {
+ printf("%06o %s U\t", ce->ce_mode,
sha1_to_hex(null_sha1));
+ } else {
+ printf("%06o %s %d\t", ce->ce_mode,
sha1_to_hex(ce->sha1), ce_stage(ce));
+ }
+ write_name_quoted(ce->name, stdout, '\n');
+ string_list_insert(&already_printed, ce->name);
+ }
+ return 0;
+}
+
+int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
+{
+ enum {
+ MODE_UNSPECIFIED = 0,
+ MODE_MODULE_LIST,
+ } cmdmode = MODE_UNSPECIFIED;
+
+ struct option options[] = {
+ OPT_CMDMODE(0, "module_list", &cmdmode,
+ N_("Get the submodule list"), MODE_MODULE_LIST),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_submodule_helper_usage, 0);
+
+ switch (cmdmode) {
+ case MODE_MODULE_LIST:
+ return module_list(argc, argv, prefix);
+ break;
+ case MODE_UNSPECIFIED:
+ usage_with_options(git_submodule_helper_usage, options);
+ break;
+ }
+ return 0;
+}
diff --git a/git.c b/git.c
index fe94066..721995e 100644
--- a/git.c
+++ b/git.c
@@ -468,6 +468,7 @@ static struct cmd_struct commands[] = {
{ "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
{ "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
{ "stripspace", cmd_stripspace },
+ { "submodule--helper", cmd_submodule__helper, RUN_SETUP },
{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
{ "tag", cmd_tag, RUN_SETUP },
{ "unpack-file", cmd_unpack_file, RUN_SETUP },
--
2.5.0.5.gf4cd9ae.dirty
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