From: Junio C Hamano Date: Tue, 10 Jul 2012 07:04:01 GMT Subject: [PATCH v4 08/19] apply: further split load_preimage() Message-ID: <1341903852-4815-9-git-send-email-gitster@pobox.com> In-Reply-To: <1341903852-4815-1-git-send-email-gitster@pobox.com> 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 --- builtin/apply.c | 59 ++++++++++++++++++++++++++++++++++++++------------------- 1 file changed, 40 insertions(+), 19 deletions(-) diff --git a/builtin/apply.c b/builtin/apply.c index 5642433..ee1a960 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); } } -- 1.7.11.1.294.g68a9409