[PATCH] Add -p (patch) to diff-tree.

This uses the reworked diff interface to generate patches directly out
of diff-tree when -p is specified.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/diff-tree.c b/diff-tree.c
index 3579b5fd1182679a39b83eaaa9dd0e7c970f4545..cbea28d6ead4c237a6dc40ee63c0c856d5f3554b 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -1,7 +1,9 @@
 #include "cache.h"
+#include "diff.h"
 
 static int recursive = 0;
 static int line_termination = '\n';
+static int generate_patch = 0;
 
 // What paths are we interested in?
 static int nr_paths = 0;
@@ -79,10 +81,15 @@ static void show_file(const char *prefix, void *tree, unsigned long size, const
                return;
        }
 
-       printf("%s%o\t%s\t%s\t%s%s%c", prefix, mode,
-              S_ISDIR(mode) ? "tree" : "blob",
-              sha1_to_hex(sha1), base, path,
-              line_termination);
+       if (generate_patch) {
+               if (!S_ISDIR(mode))
+                       diff_addremove(prefix[0], mode, sha1, base, path);
+       }
+       else
+               printf("%s%06o\t%s\t%s\t%s%s%c", prefix, mode,
+                      S_ISDIR(mode) ? "tree" : "blob",
+                      sha1_to_hex(sha1), base, path,
+                      line_termination);
 }
 
 static int compare_tree_entry(void *tree1, unsigned long size1, void *tree2, unsigned long size2, const char *base)
@@ -128,11 +135,17 @@ static int compare_tree_entry(void *tree1, unsigned long size1, void *tree2, uns
                return retval;
        }
 
-       strcpy(old_sha1_hex, sha1_to_hex(sha1));
-       printf("*%o->%o\t%s\t%s->%s\t%s%s%c", mode1, mode2,
-              S_ISDIR(mode1) ? "tree" : "blob",
-              old_sha1_hex, sha1_to_hex(sha2), base, path1,
-              line_termination);
+       if (generate_patch) {
+               if (!S_ISDIR(mode1))
+                       diff_change(mode1, mode2, sha1, sha2, base, path1);
+       }
+       else {
+               strcpy(old_sha1_hex, sha1_to_hex(sha1));
+               printf("*%06o->%06o\t%s\t%s->%s\t%s%s%c", mode1, mode2,
+                      S_ISDIR(mode1) ? "tree" : "blob",
+                      old_sha1_hex, sha1_to_hex(sha2), base, path1,
+                      line_termination);
+       }
        return 0;
 }
 
@@ -255,6 +268,10 @@ int main(int argc, char **argv)
                        recursive = 1;
                        continue;
                }
+               if (!strcmp(arg, "-p")) {
+                       generate_patch = 1;
+                       continue;
+               }
                if (!strcmp(arg, "-z")) {
                        line_termination = '\0';
                        continue;