load_preimage() is very specific to grab the current contents for
the path given by patch->old_name. Split the logic that grabs the
contents for a path out of it into a separate load_patch_target()
function.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin/apply.c | 59 ++++++++++++++++++++++++++++++++++++++-------------------
1 file changed, 40 insertions(+), 19 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index 78dc1a8..35e9a9c 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -3067,6 +3067,31 @@ static struct patch *previous_patch(struct patch *patch, int *gone)
return previous;
}
+#define SUBMODULE_PATCH_WITHOUT_INDEX 1
+
+static int load_patch_target(struct strbuf *buf,
+ struct cache_entry *ce,
+ struct stat *st,
+ const char *name,
+ unsigned expected_mode)
+{
+ if (cached) {
+ if (read_file_or_gitlink(ce, buf))
+ return error(_("read of %s failed"), name);
+ } else if (name) {
+ if (S_ISGITLINK(expected_mode)) {
+ if (ce)
+ return read_file_or_gitlink(ce, buf);
+ else
+ return SUBMODULE_PATCH_WITHOUT_INDEX;
+ } else {
+ if (read_old_data(st, name, buf))
+ return error(_("read of %s failed"), name);
+ }
+ }
+ return 0;
+}
+
/*
* We are about to apply "patch"; populate the "image" with the
* current version we have, from the working tree or from the index,
@@ -3090,26 +3115,22 @@ static int load_preimage(struct image *image,
if (previous) {
/* We have a patched copy in memory; use that. */
strbuf_add(&buf, previous->result, previous->resultsize);
- } else if (cached) {
- if (read_file_or_gitlink(ce, &buf))
+ } else {
+ status = load_patch_target(&buf, ce, st,
+ patch->old_name, patch->old_mode);
+ if (status < 0)
+ return status;
+ else if (status == SUBMODULE_PATCH_WITHOUT_INDEX) {
+ /*
+ * There is no way to apply subproject
+ * patch without looking at the index.
+ * NEEDSWORK: shouldn't this be flagged
+ * as an error???
+ */
+ free_fragment_list(patch->fragments);
+ patch->fragments = NULL;
+ } else if (status) {
return error(_("read of %s failed"), patch->old_name);
- } else if (patch->old_name) {
- if (S_ISGITLINK(patch->old_mode)) {
- if (ce) {
- read_file_or_gitlink(ce, &buf);
- } else {
- /*
- * There is no way to apply subproject
- * patch without looking at the index.
- * NEEDSWORK: shouldn't this be flagged
- * as an error???
- */
- free_fragment_list(patch->fragments);
- patch->fragments = NULL;
- }
- } else {
- if (read_old_data(st, patch->old_name, &buf))
- return error(_("read of %s failed"), patch->old_name);
}
}
--
1.7.11.rc3.30.g3bdace2
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