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apply --cached: apply a patch without using working tree.
A new flag "--cached" takes the cached data, applies the patch and stores the result in the index, without using the working tree. Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
parent
49e3343c9f
commit
04e4888e5a
72
apply.c
72
apply.c
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@ -17,6 +17,8 @@
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// --stat does just a diffstat, and doesn't actually apply
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// --numstat does numeric diffstat, and doesn't actually apply
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// --index-info shows the old and new index info for paths if available.
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// --index updates the cache as well.
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// --cached updates only the cache without ever touching the working tree.
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//
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static const char *prefix;
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static int prefix_length = -1;
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@ -26,6 +28,7 @@ static int p_value = 1;
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static int allow_binary_replacement = 0;
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static int check_index = 0;
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static int write_index = 0;
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static int cached = 0;
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static int diffstat = 0;
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static int numstat = 0;
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static int summary = 0;
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@ -36,7 +39,7 @@ static int show_index_info = 0;
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static int line_termination = '\n';
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static unsigned long p_context = -1;
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static const char apply_usage[] =
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"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] [-CNUM] [--whitespace=<nowarn|warn|error|error-all|strip>] <patch>...";
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"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--cached] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] [-CNUM] [--whitespace=<nowarn|warn|error|error-all|strip>] <patch>...";
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static enum whitespace_eol {
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nowarn_whitespace,
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@ -1600,7 +1603,7 @@ static int apply_fragments(struct buffer_desc *desc, struct patch *patch)
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return 0;
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}
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static int apply_data(struct patch *patch, struct stat *st)
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static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce)
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{
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char *buf;
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unsigned long size, alloc;
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@ -1609,7 +1612,17 @@ static int apply_data(struct patch *patch, struct stat *st)
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size = 0;
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alloc = 0;
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buf = NULL;
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if (patch->old_name) {
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if (cached) {
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if (ce) {
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char type[20];
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buf = read_sha1_file(ce->sha1, type, &size);
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if (!buf)
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return error("read of %s failed",
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patch->old_name);
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alloc = size;
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}
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}
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else if (patch->old_name) {
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size = st->st_size;
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alloc = size + 8192;
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buf = xmalloc(alloc);
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@ -1637,16 +1650,21 @@ static int check_patch(struct patch *patch)
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const char *old_name = patch->old_name;
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const char *new_name = patch->new_name;
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const char *name = old_name ? old_name : new_name;
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struct cache_entry *ce = NULL;
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if (old_name) {
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int changed;
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int stat_ret = lstat(old_name, &st);
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int changed = 0;
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int stat_ret = 0;
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unsigned st_mode = 0;
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if (!cached)
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stat_ret = lstat(old_name, &st);
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if (check_index) {
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int pos = cache_name_pos(old_name, strlen(old_name));
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if (pos < 0)
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return error("%s: does not exist in index",
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old_name);
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ce = active_cache[pos];
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if (stat_ret < 0) {
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struct checkout costate;
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if (errno != ENOENT)
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@ -1659,37 +1677,41 @@ static int check_patch(struct patch *patch)
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costate.quiet = 0;
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costate.not_new = 0;
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costate.refresh_cache = 1;
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if (checkout_entry(active_cache[pos],
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if (checkout_entry(ce,
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&costate,
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NULL) ||
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lstat(old_name, &st))
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return -1;
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}
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changed = ce_match_stat(active_cache[pos], &st, 1);
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if (!cached)
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changed = ce_match_stat(ce, &st, 1);
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if (changed)
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return error("%s: does not match index",
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old_name);
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if (cached)
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st_mode = ntohl(ce->ce_mode);
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}
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else if (stat_ret < 0)
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return error("%s: %s", old_name, strerror(errno));
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if (!cached)
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st_mode = ntohl(create_ce_mode(st.st_mode));
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if (patch->is_new < 0)
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patch->is_new = 0;
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st.st_mode = ntohl(create_ce_mode(st.st_mode));
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if (!patch->old_mode)
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patch->old_mode = st.st_mode;
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if ((st.st_mode ^ patch->old_mode) & S_IFMT)
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patch->old_mode = st_mode;
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if ((st_mode ^ patch->old_mode) & S_IFMT)
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return error("%s: wrong type", old_name);
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if (st.st_mode != patch->old_mode)
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if (st_mode != patch->old_mode)
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fprintf(stderr, "warning: %s has type %o, expected %o\n",
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old_name, st.st_mode, patch->old_mode);
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old_name, st_mode, patch->old_mode);
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}
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if (new_name && (patch->is_new | patch->is_rename | patch->is_copy)) {
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if (check_index && cache_name_pos(new_name, strlen(new_name)) >= 0)
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return error("%s: already exists in index", new_name);
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if (!lstat(new_name, &st))
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if (!cached && !lstat(new_name, &st))
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return error("%s: already exists in working directory", new_name);
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if (errno != ENOENT)
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return error("%s: %s", new_name, strerror(errno));
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@ -1709,9 +1731,9 @@ static int check_patch(struct patch *patch)
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return error("new mode (%o) of %s does not match old mode (%o)%s%s",
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patch->new_mode, new_name, patch->old_mode,
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same ? "" : " of ", same ? "" : old_name);
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}
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}
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if (apply_data(patch, &st) < 0)
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if (apply_data(patch, &st, ce) < 0)
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return error("%s: patch does not apply", name);
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return 0;
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}
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@ -1894,7 +1916,8 @@ static void remove_file(struct patch *patch)
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if (remove_file_from_cache(patch->old_name) < 0)
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die("unable to remove %s from index", patch->old_name);
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}
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unlink(patch->old_name);
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if (!cached)
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unlink(patch->old_name);
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}
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static void add_index_file(const char *path, unsigned mode, void *buf, unsigned long size)
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@ -1911,9 +1934,11 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
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memcpy(ce->name, path, namelen);
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ce->ce_mode = create_ce_mode(mode);
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ce->ce_flags = htons(namelen);
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if (lstat(path, &st) < 0)
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die("unable to stat newly created file %s", path);
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fill_stat_cache_info(ce, &st);
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if (!cached) {
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if (lstat(path, &st) < 0)
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die("unable to stat newly created file %s", path);
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fill_stat_cache_info(ce, &st);
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}
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if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
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die("unable to create backing store for newly created file %s", path);
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if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
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@ -1950,6 +1975,8 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
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*/
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static void create_one_file(char *path, unsigned mode, const char *buf, unsigned long size)
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{
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if (cached)
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return;
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if (!try_create_file(path, mode, buf, size))
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return;
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@ -2182,6 +2209,11 @@ int main(int argc, char **argv)
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check_index = 1;
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continue;
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}
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if (!strcmp(arg, "--cached")) {
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check_index = 1;
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cached = 1;
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continue;
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}
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if (!strcmp(arg, "--apply")) {
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apply = 1;
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continue;
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