The implementation of "git add" has four major codepaths that are mutually
exclusive:
- if "--interactive" or "--patch" is given, spawn "git add--interactive"
and exit without doing anything else. Otherwise things are handled
internally in this C code;
- if "--update" is given, update the modified files and exit without
doing anything else;
- if "--refresh" is given, do refresh and exit without doing anything
else;
- otherwise, find the paths that match pathspecs and stage their
contents.
It led to an unholy mess in the code structure; each of the latter three
codepaths has a separate call to read_cache(), even though they are all
about "read the current index, update it and write it back", and logically
they should read the index once _anyway_.
This cleans up the latter three cases by introducing a pair of helper
variables:
- "add_new_files" is set if we need to scan the working tree for paths
that match the pathspec. This variable is false for "--update" and
"--refresh", because they only work on already tracked files.
- "require_pathspec" is set if the user must give at least one pathspec.
"--update" does not need it but all the other cases do.
This is in preparation for introducing a new option "--all", that does the
equivalent of "git add -u && git add ." (aka "addremove").
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin-add.c | 75 ++++++++++++++++++++++++++++++++------------------------
1 files changed, 43 insertions(+), 32 deletions(-)
diff --git a/builtin-add.c b/builtin-add.c
index bf13aa3..9b2ee8c 100644
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -140,8 +140,6 @@ static void refresh(int verbose, const char **pathspec)
for (specs = 0; pathspec[specs]; specs++)
/* nothing */;
seen = xcalloc(specs, 1);
- if (read_cache() < 0)
- die("index file corrupt");
refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
for (i = 0; i < specs; i++) {
if (!seen[i])
@@ -216,13 +214,36 @@ static int add_config(const char *var, const char *value, void *cb)
return git_default_config(var, value, cb);
}
+static int add_files(struct dir_struct *dir, int flags)
+{
+ int i, exit_status = 0;
+
+ if (dir->ignored_nr) {
+ fprintf(stderr, ignore_error);
+ for (i = 0; i < dir->ignored_nr; i++)
+ fprintf(stderr, "%s\n", dir->ignored[i]->name);
+ fprintf(stderr, "Use -f if you really want to add them.\n");
+ die("no files added");
+ }
+
+ for (i = 0; i < dir->nr; i++)
+ if (add_file_to_cache(dir->entries[i]->name, flags)) {
+ if (!ignore_add_errors)
+ die("adding files failed");
+ exit_status = 1;
+ }
+ return exit_status;
+}
+
int cmd_add(int argc, const char **argv, const char *prefix)
{
int exit_status = 0;
- int i, newfd;
+ int newfd;
const char **pathspec;
struct dir_struct dir;
int flags;
+ int add_new_files;
+ int require_pathspec;
argc = parse_options(argc, argv, builtin_add_options,
builtin_add_usage, 0);
@@ -233,53 +254,43 @@ int cmd_add(int argc, const char **argv, const char *prefix)
git_config(add_config, NULL);
+ add_new_files = !take_worktree_changes && !refresh_only;
+ require_pathspec = !take_worktree_changes;
+
newfd = hold_locked_index(&lock_file, 1);
flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
(show_only ? ADD_CACHE_PRETEND : 0) |
(ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0));
- if (take_worktree_changes) {
- const char **pathspec;
- if (read_cache() < 0)
- die("index file corrupt");
- pathspec = get_pathspec(prefix, argv);
- exit_status = add_files_to_cache(prefix, pathspec, flags);
- goto finish;
- }
-
- if (argc == 0) {
+ if (require_pathspec && argc == 0) {
fprintf(stderr, "Nothing specified, nothing added.\n");
fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
return 0;
}
pathspec = get_pathspec(prefix, argv);
- if (refresh_only) {
- refresh(verbose, pathspec);
- goto finish;
- }
-
- fill_directory(&dir, pathspec, ignored_too);
+ /*
+ * If we are adding new files, we need to scan the working
+ * tree to find the ones that match pathspecs; this needs
+ * to be done before we read the index.
+ */
+ if (add_new_files)
+ fill_directory(&dir, pathspec, ignored_too);
if (read_cache() < 0)
die("index file corrupt");
- if (dir.ignored_nr) {
- fprintf(stderr, ignore_error);
- for (i = 0; i < dir.ignored_nr; i++) {
- fprintf(stderr, "%s\n", dir.ignored[i]->name);
- }
- fprintf(stderr, "Use -f if you really want to add them.\n");
- die("no files added");
+ if (refresh_only) {
+ refresh(verbose, pathspec);
+ goto finish;
}
- for (i = 0; i < dir.nr; i++)
- if (add_file_to_cache(dir.entries[i]->name, flags)) {
- if (!ignore_add_errors)
- die("adding files failed");
- exit_status = 1;
- }
+ if (take_worktree_changes)
+ exit_status |= add_files_to_cache(prefix, pathspec, flags);
+
+ if (add_new_files)
+ exit_status |= add_files(&dir, flags);
finish:
if (active_cache_changed) {
--
1.5.6.4.570.g052e6
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