X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=apply.c;h=79e23a7fb930ba7b322a0c30dc87c5b394622e49;hb=cb754fdf5a742a5479458da84d8f92bce2434ed5;hp=50be8f3e22d0906d09410b89ebc8d06f928ba631;hpb=8fc66df237afce0b4318657f166b3583831949f3;p=git.git

diff --git a/apply.c b/apply.c
index 50be8f3e..79e23a7f 100644
--- a/apply.c
+++ b/apply.c
@@ -16,6 +16,10 @@
 //  --numstat does numeric diffstat, and doesn't actually apply
 //  --index-info shows the old and new index info for paths if available.
 //
+static const char *prefix;
+static int prefix_length = -1;
+
+static int p_value = 1;
 static int allow_binary_replacement = 0;
 static int check_index = 0;
 static int write_index = 0;
@@ -28,7 +32,7 @@ static int no_add = 0;
 static int show_index_info = 0;
 static int line_termination = '\n';
 static const char apply_usage[] =
-"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] <patch>...";
+"git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [-z] [-pNUM] <patch>...";
 
 /*
  * For "diff-stat" like behaviour, we keep track of the biggest change
@@ -81,14 +85,11 @@ static void *read_patch_file(int fd, unsigned long *sizep)
 			buffer = xrealloc(buffer, alloc);
 			nr = alloc - size;
 		}
-		nr = read(fd, buffer + size, nr);
+		nr = xread(fd, buffer + size, nr);
 		if (!nr)
 			break;
-		if (nr < 0) {
-			if (errno == EAGAIN)
-				continue;
+		if (nr < 0)
 			die("git-apply: read returned %s", strerror(errno));
-		}
 		size += nr;
 	}
 	*sizep = size;
@@ -217,7 +218,6 @@ static char * find_name(const char *line, char *def, int p_value, int terminate)
  */
 static void parse_traditional_patch(const char *first, const char *second, struct patch *patch)
 {
-	int p_value = 1;
 	char *name;
 
 	first += 4;	// skip "--- "
@@ -1003,13 +1003,8 @@ static int read_old_data(struct stat *st, const char *path, void *buf, unsigned
 			return error("unable to open %s", path);
 		got = 0;
 		for (;;) {
-			int ret = read(fd, buf + got, size - got);
-			if (ret < 0) {
-				if (errno == EAGAIN)
-					continue;
-				break;
-			}
-			if (!ret)
+			int ret = xread(fd, buf + got, size - got);
+			if (ret <= 0)
 				break;
 			got += ret;
 		}
@@ -1593,16 +1588,13 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
 
 	if (S_ISLNK(mode))
 		return symlink(buf, path);
-	fd = open(path, O_CREAT | O_EXCL | O_WRONLY | O_TRUNC, (mode & 0100) ? 0777 : 0666);
+	fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666);
 	if (fd < 0)
 		return -1;
 	while (size) {
-		int written = write(fd, buf, size);
-		if (written < 0) {
-			if (errno == EINTR || errno == EAGAIN)
-				continue;
+		int written = xwrite(fd, buf, size);
+		if (written < 0)
 			die("writing file %s: %s", path, strerror(errno));
-		}
 		if (!written)
 			die("out of space writing file %s", path);
 		buf += written;
@@ -1643,7 +1635,8 @@ static void create_one_file(const char *path, unsigned mode, const char *buf, un
 			}
 			if (errno != EEXIST)
 				break;
-		}			
+			++nr;
+		}
 	}
 	die("unable to write file %s mode %o", path, mode);
 }
@@ -1706,6 +1699,12 @@ static int use_patch(struct patch *p)
 			return 0;
 		x = x->next;
 	}
+	if (0 < prefix_length) {
+		int pathlen = strlen(pathname);
+		if (pathlen <= prefix_length ||
+		    memcmp(prefix, pathname, prefix_length))
+			return 0;
+	}
 	return 1;
 }
 
@@ -1800,6 +1799,10 @@ int main(int argc, char **argv)
 			excludes = x;
 			continue;
 		}
+		if (!strncmp(arg, "-p", 2)) {
+			p_value = atoi(arg + 2);
+			continue;
+		}
 		if (!strcmp(arg, "--no-add")) {
 			no_add = 1;
 			continue;
@@ -1845,6 +1848,15 @@ int main(int argc, char **argv)
 			line_termination = 0;
 			continue;
 		}
+
+		if (check_index && prefix_length < 0) {
+			prefix = setup_git_directory();
+			prefix_length = prefix ? strlen(prefix) : 0;
+			git_config(git_default_config);
+		}
+		if (0 < prefix_length)
+			arg = prefix_filename(prefix, prefix_length, arg);
+
 		fd = open(arg, O_RDONLY);
 		if (fd < 0)
 			usage(apply_usage);