X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=checkout-index.c;h=f54c606414c27a7fc42a557fb0dee438b2abffec;hb=0c1fc940eeae051e890304c40d1e66a478afadc8;hp=dab3778a9585bcfde98be436255542df13aacddb;hpb=8fc66df237afce0b4318657f166b3583831949f3;p=git.git

diff --git a/checkout-index.c b/checkout-index.c
index dab3778a..f54c6064 100644
--- a/checkout-index.c
+++ b/checkout-index.c
@@ -22,6 +22,10 @@
  *
  *	find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
  *
+ * or:
+ *
+ *	find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
+ *
  * which will force all existing *.h files to be replaced with
  * their cached copies. If an empty command line implied "all",
  * then this would force-refresh everything in the cache, which
@@ -33,6 +37,12 @@
  * but get used to it in scripting!).
  */
 #include "cache.h"
+#include "strbuf.h"
+#include "quote.h"
+
+static const char *prefix;
+static int prefix_length;
+static int checkout_stage; /* default to checkout stage0 */
 
 static struct checkout state = {
 	.base_dir = "",
@@ -45,20 +55,36 @@ static struct checkout state = {
 
 static int checkout_file(const char *name)
 {
-	int pos = cache_name_pos(name, strlen(name));
-	if (pos < 0) {
-		if (!state.quiet) {
-			pos = -pos - 1;
-			fprintf(stderr,
-				"git-checkout-index: %s is %s.\n",
-				name,
-				(pos < active_nr &&
-				 !strcmp(active_cache[pos]->name, name)) ?
-				"unmerged" : "not in the cache");
-		}
-		return -1;
+	int namelen = strlen(name);
+	int pos = cache_name_pos(name, namelen);
+	int has_same_name = 0;
+
+	if (pos < 0)
+		pos = -pos - 1;
+
+	while (pos < active_nr) {
+		struct cache_entry *ce = active_cache[pos];
+		if (ce_namelen(ce) != namelen ||
+		    memcmp(ce->name, name, namelen))
+			break;
+		has_same_name = 1;
+		if (checkout_stage == ce_stage(ce))
+			return checkout_entry(ce, &state);
+		pos++;
+	}
+
+	if (!state.quiet) {
+		fprintf(stderr, "git-checkout-index: %s ", name);
+		if (!has_same_name)
+			fprintf(stderr, "is not in the cache");
+		else if (checkout_stage)
+			fprintf(stderr, "does not exist at stage %d",
+				checkout_stage);
+		else
+			fprintf(stderr, "is unmerged");
+		fputc('\n', stderr);
 	}
-	return checkout_entry(active_cache[pos], &state);
+	return -1;
 }
 
 static int checkout_all(void)
@@ -67,7 +93,11 @@ static int checkout_all(void)
 
 	for (i = 0; i < active_nr ; i++) {
 		struct cache_entry *ce = active_cache[i];
-		if (ce_stage(ce))
+		if (ce_stage(ce) != checkout_stage)
+			continue;
+		if (prefix && *prefix &&
+		    (ce_namelen(ce) <= prefix_length ||
+		     memcmp(prefix, ce->name, prefix_length)))
 			continue;
 		if (checkout_entry(ce, &state) < 0)
 			errs++;
@@ -81,7 +111,7 @@ static int checkout_all(void)
 }
 
 static const char checkout_cache_usage[] =
-"git-checkout-index [-u] [-q] [-a] [-f] [-n] [--prefix=<string>] [--] <file>...";
+"git-checkout-index [-u] [-q] [-a] [-f] [-n] [--stage=[123]] [--prefix=<string>] [--] <file>...";
 
 static struct cache_file cache_file;
 
@@ -90,6 +120,12 @@ int main(int argc, char **argv)
 	int i;
 	int newfd = -1;
 	int all = 0;
+	int read_from_stdin = 0;
+	int line_termination = '\n';
+
+	prefix = setup_git_directory();
+	git_config(git_default_config);
+	prefix_length = prefix ? strlen(prefix) : 0;
 
 	if (read_cache() < 0) {
 		die("invalid cache");
@@ -128,11 +164,30 @@ int main(int argc, char **argv)
 				die("cannot open index.lock file.");
 			continue;
 		}
-		if (!memcmp(arg, "--prefix=", 9)) {
+		if (!strcmp(arg, "-z")) {
+			line_termination = 0;
+			continue;
+		}
+		if (!strcmp(arg, "--stdin")) {
+			if (i != argc - 1)
+				die("--stdin must be at the end");
+			read_from_stdin = 1;
+			i++; /* do not consider arg as a file name */
+			break;
+		}
+		if (!strncmp(arg, "--prefix=", 9)) {
 			state.base_dir = arg+9;
 			state.base_dir_len = strlen(state.base_dir);
 			continue;
 		}
+		if (!strncmp(arg, "--stage=", 8)) {
+			int ch = arg[8];
+			if ('1' <= ch && ch <= '3')
+				checkout_stage = arg[8] - '0';
+			else
+				die("stage should be between 1 and 3");
+			continue;
+		}
 		if (arg[0] == '-')
 			usage(checkout_cache_usage);
 		break;
@@ -155,7 +210,29 @@ int main(int argc, char **argv)
 
 		if (all)
 			die("git-checkout-index: don't mix '--all' and explicit filenames");
-		checkout_file(arg);
+		if (read_from_stdin)
+			die("git-checkout-index: don't mix '--stdin' and explicit filenames");
+		checkout_file(prefix_path(prefix, prefix_length, arg));
+	}
+
+	if (read_from_stdin) {
+		struct strbuf buf;
+		if (all)
+			die("git-checkout-index: don't mix '--all' and '--stdin'");
+		strbuf_init(&buf);
+		while (1) {
+			char *path_name;
+			read_line(&buf, stdin, line_termination);
+			if (buf.eof)
+				break;
+			if (line_termination && buf.buf[0] == '"')
+				path_name = unquote_c_style(buf.buf, NULL);
+			else
+				path_name = buf.buf;
+			checkout_file(prefix_path(prefix, prefix_length, path_name));
+			if (path_name != buf.buf)
+				free(path_name);
+		}
 	}
 
 	if (all)