X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=apply.c;h=c81b0a240a38b57a9bbd2586889304bef8f5cbbf;hb=2eb6d82eaa869a1faf4ba3326fd628f76f9f93a8;hp=c0cd1520db6ef1036678046fc5c8ada174155c49;hpb=de4971b50076b5ef901c2ae0bbee9dd2c14f06ea;p=git.git

diff --git a/apply.c b/apply.c
index c0cd1520..c81b0a24 100644
--- a/apply.c
+++ b/apply.c
@@ -28,10 +28,11 @@ static int merge_patch = 1;
 static int check_index = 0;
 static int write_index = 0;
 static int diffstat = 0;
+static int summary = 0;
 static int check = 0;
 static int apply = 1;
 static int show_files = 0;
-static const char apply_usage[] = "git-apply [--stat] [--check] [--show-files] <patch>";
+static const char apply_usage[] = "git-apply [--stat] [--summary] [--check] [--show-files] <patch>";
 
 /*
  * For "diff-stat" like behaviour, we keep track of the biggest change
@@ -60,6 +61,7 @@ struct patch {
 	unsigned int old_mode, new_mode;
 	int is_rename, is_copy, is_new, is_delete;
 	int lines_added, lines_deleted;
+	int score;
 	struct fragment *fragments;
 	char *result;
 	unsigned long resultsize;
@@ -329,11 +331,15 @@ static int gitdiff_renamedst(const char *line, struct patch *patch)
 
 static int gitdiff_similarity(const char *line, struct patch *patch)
 {
+	if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX)
+		patch->score = 0;
 	return 0;
 }
 
 static int gitdiff_dissimilarity(const char *line, struct patch *patch)
 {
+	if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX)
+		patch->score = 0;
 	return 0;
 }
 
@@ -570,8 +576,11 @@ static int find_header(char *line, unsigned long size, int *hdrsize, struct patc
 			int git_hdr_len = parse_git_header(line, len, size, patch);
 			if (git_hdr_len <= len)
 				continue;
-			if (!patch->old_name && !patch->new_name)
-				die("git diff header lacks filename information (line %d)", linenr);
+			if (!patch->old_name && !patch->new_name) {
+				if (!patch->def_name)
+					die("git diff header lacks filename information (line %d)", linenr);
+				patch->old_name = patch->new_name = patch->def_name;
+			}
 			*hdrsize = git_hdr_len;
 			return offset;
 		}
@@ -720,11 +729,11 @@ const char minuses[]= "---------------------------------------------------------
 
 static void show_stats(struct patch *patch)
 {
-	char *name = patch->old_name;
+	char *name = patch->new_name;
 	int len, max, add, del, total;
 
 	if (!name)
-		name = patch->new_name;
+		name = patch->old_name;
 
 	/*
 	 * "scale" the filename
@@ -748,9 +757,11 @@ static void show_stats(struct patch *patch)
 	del = patch->lines_deleted;
 	total = add + del;
 
-	total = (total * max + max_change / 2) / max_change;
-	add = (add * max + max_change / 2) / max_change;
-	del = total - add;
+	if (max_change > 0) {
+		total = (total * max + max_change / 2) / max_change;
+		add = (add * max + max_change / 2) / max_change;
+		del = total - add;
+	}
 	printf(" %-*s |%5d %.*s%.*s\n",
 		len, name, patch->lines_added + patch->lines_deleted,
 		add, pluses, del, minuses);
@@ -849,7 +860,6 @@ static int find_offset(const char *buf, unsigned long size, const char *fragment
 		n = (i >> 1)+1;
 		if (i & 1)
 			n = -n;
-		fprintf(stderr, "Fragment applied at offset %d\n", n);
 		return try;
 	}
 
@@ -1088,6 +1098,84 @@ static void stat_patch_list(struct patch *patch)
 	printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels);
 }
 
+static void show_file_mode_name(const char *newdelete, unsigned int mode, const char *name)
+{
+	if (mode)
+		printf(" %s mode %06o %s\n", newdelete, mode, name);
+	else
+		printf(" %s %s\n", newdelete, name);
+}
+
+static void show_mode_change(struct patch *p, int show_name)
+{
+	if (p->old_mode && p->new_mode && p->old_mode != p->new_mode) {
+		if (show_name)
+			printf(" mode change %06o => %06o %s\n",
+			       p->old_mode, p->new_mode, p->new_name);
+		else
+			printf(" mode change %06o => %06o\n",
+			       p->old_mode, p->new_mode);
+	}
+}
+
+static void show_rename_copy(struct patch *p)
+{
+	const char *renamecopy = p->is_rename ? "rename" : "copy";
+	const char *old, *new;
+
+	/* Find common prefix */
+	old = p->old_name;
+	new = p->new_name;
+	while (1) {
+		const char *slash_old, *slash_new;
+		slash_old = strchr(old, '/');
+		slash_new = strchr(new, '/');
+		if (!slash_old ||
+		    !slash_new ||
+		    slash_old - old != slash_new - new ||
+		    memcmp(old, new, slash_new - new))
+			break;
+		old = slash_old + 1;
+		new = slash_new + 1;
+	}
+	/* p->old_name thru old is the common prefix, and old and new
+	 * through the end of names are renames
+	 */
+	if (old != p->old_name)
+		printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
+		       old - p->old_name, p->old_name,
+		       old, new, p->score);
+	else
+		printf(" %s %s => %s (%d%%)\n", renamecopy,
+		       p->old_name, p->new_name, p->score);
+	show_mode_change(p, 0);
+}
+
+static void summary_patch_list(struct patch *patch)
+{
+	struct patch *p;
+
+	for (p = patch; p; p = p->next) {
+		if (p->is_new)
+			show_file_mode_name("create", p->new_mode, p->new_name);
+		else if (p->is_delete)
+			show_file_mode_name("delete", p->old_mode, p->old_name);
+		else {
+			if (p->is_rename || p->is_copy)
+				show_rename_copy(p);
+			else {
+				if (p->score) {
+					printf(" rewrite %s (%d%%)\n",
+					       p->new_name, p->score);
+					show_mode_change(p, 0);
+				}
+				else
+					show_mode_change(p, 1);
+			}
+		}
+	}
+}
+
 static void patch_stats(struct patch *patch)
 {
 	int lines = patch->lines_added + patch->lines_deleted;
@@ -1139,6 +1227,51 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
 		die("unable to add cache entry for %s", path);
 }
 
+static void create_subdirectories(const char *path)
+{
+	int len = strlen(path);
+	char *buf = xmalloc(len + 1);
+	const char *slash = path;
+
+	while ((slash = strchr(slash+1, '/')) != NULL) {
+		len = slash - path;
+		memcpy(buf, path, len);
+		buf[len] = 0;
+		if (mkdir(buf, 0755) < 0) {
+			if (errno != EEXIST)
+				break;
+		}
+	}
+	free(buf);
+}
+
+/*
+ * We optimistically assume that the directories exist,
+ * which is true 99% of the time anyway. If they don't,
+ * we create them and try again.
+ */
+static int create_regular_file(const char *path, unsigned int mode)
+{
+	int ret = open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
+
+	if (ret < 0 && errno == ENOENT) {
+		create_subdirectories(path);
+		ret = open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
+	}
+	return ret;
+}
+
+static int create_symlink(const char *buf, const char *path)
+{
+	int ret = symlink(buf, path);
+
+	if (ret < 0 && errno == ENOENT) {
+		create_subdirectories(path);
+		ret = symlink(buf, path);
+	}
+	return ret;
+}
+
 static void create_file(struct patch *patch)
 {
 	const char *path = patch->new_name;
@@ -1151,7 +1284,7 @@ static void create_file(struct patch *patch)
 	if (S_ISREG(mode)) {
 		int fd;
 		mode = (mode & 0100) ? 0777 : 0666;
-		fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, mode);
+		fd = create_regular_file(path, mode);
 		if (fd < 0)
 			die("unable to create file %s (%s)", path, strerror(errno));
 		if (write(fd, buf, size) != size)
@@ -1164,7 +1297,7 @@ static void create_file(struct patch *patch)
 		if (size && buf[size-1] == '\n')
 			size--;
 		buf[size] = 0;
-		if (symlink(buf, path) < 0)
+		if (create_symlink(buf, path) < 0)
 			die("unable to write symlink %s", path);
 		add_index_file(path, mode, buf, size);
 		return;
@@ -1256,6 +1389,9 @@ static int apply_patch(int fd)
 	if (diffstat)
 		stat_patch_list(list);
 
+	if (summary)
+		summary_patch_list(list);
+
 	free(buffer);
 	return 0;
 }
@@ -1283,6 +1419,11 @@ int main(int argc, char **argv)
 			diffstat = 1;
 			continue;
 		}
+		if (!strcmp(arg, "--summary")) {
+			apply = 0;
+			summary = 1;
+			continue;
+		}
 		if (!strcmp(arg, "--check")) {
 			apply = 0;
 			check = 1;
@@ -1292,6 +1433,10 @@ int main(int argc, char **argv)
 			check_index = 1;
 			continue;
 		}
+		if (!strcmp(arg, "--apply")) {
+			apply = 1;
+			continue;
+		}
 		if (!strcmp(arg, "--show-files")) {
 			show_files = 1;
 			continue;