[PATCH] Update git-diff-cache documentation.

diff --git a/diff-tree.c b/diff-tree.c
index 3428a6ee9db212b8fbf13d81602fe44394dae4cb..a7e7345bd622e1885471345c759d0fe9ae20c6d9 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -18,7 +18,7 @@ static const char *header_prefix = "";
 
 // What paths are we interested in?
 static int nr_paths = 0;
-static char **paths = NULL;
+static const char **paths = NULL;
 static int *pathlens = NULL;
 
 static int diff_tree_sha1(const unsigned char *old, const unsigned char *new, const char *base);
@@ -67,11 +67,6 @@ static void show_file(const char *prefix, void *tree, unsigned long size, const
        const char *path;
        const unsigned char *sha1 = extract(tree, size, &path, &mode);
 
-       if (header) {
-               printf("%s", header);
-               header = NULL;
-       }
-
        if (silent)
                return;
 
@@ -137,10 +132,6 @@ static int compare_tree_entry(void *tree1, unsigned long size1, void *tree2, uns
                return retval;
        }
 
-       if (header) {
-               printf("%s", header);
-               header = NULL;
-       }
        if (silent)
                return 0;
 
@@ -268,16 +259,38 @@ static int diff_tree_sha1(const unsigned char *old, const unsigned char *new, co
 
 static void call_diff_setup(void)
 {
-       diff_setup(reverse_diff, diff_output_format);
+       diff_setup(reverse_diff);
 }
 
-static void call_diff_flush(void)
+static int call_diff_flush(void)
 {
        if (detect_rename)
-               diff_detect_rename(detect_rename, diff_score_opt);
+               diffcore_rename(detect_rename, diff_score_opt);
        if (pickaxe)
-               diff_pickaxe(pickaxe);
-       diff_flush(NULL, 0);
+               diffcore_pickaxe(pickaxe);
+       if (diff_queue_is_empty()) {
+               diff_flush(DIFF_FORMAT_NO_OUTPUT, 0);
+               return 0;
+       }
+       if (nr_paths)
+               diffcore_pathspec(paths);
+       if (header) {
+               if (diff_output_format == DIFF_FORMAT_MACHINE) {
+                       const char *ep, *cp;
+                       for (cp = header; *cp; cp = ep) {
+                               ep = strchr(cp, '\n');
+                               if (ep == 0) ep = cp + strlen(cp);
+                               printf("%.*s%c", ep-cp, cp, 0);
+                               if (*ep) ep++;
+                       }
+               }
+               else {
+                       printf("%s", header);
+               }
+               header = NULL;
+       }
+       diff_flush(diff_output_format, 1);
+       return 1;
 }
 
 static int diff_tree_sha1_top(const unsigned char *old,
@@ -462,7 +475,7 @@ static int diff_tree_stdin(char *line)
 static char *diff_tree_usage =
 "git-diff-tree [-p] [-r] [-z] [--stdin] [-M] [-C] [-R] [-S<string>] [-m] [-s] [-v] <tree-ish> <tree-ish>";
 
-int main(int argc, char **argv)
+int main(int argc, const char **argv)
 {
        int nr_sha1;
        char line[1000];
@@ -470,7 +483,7 @@ int main(int argc, char **argv)
 
        nr_sha1 = 0;
        for (;;) {
-               char *arg;
+               const char *arg;
 
                argv++;
                argc--;
@@ -509,12 +522,12 @@ int main(int argc, char **argv)
                        continue;
                }
                if (!strncmp(arg, "-M", 2)) {
-                       detect_rename = 1;
+                       detect_rename = DIFF_DETECT_RENAME;
                        diff_score_opt = diff_scoreopt_parse(arg);
                        continue;
                }
                if (!strncmp(arg, "-C", 2)) {
-                       detect_rename = 2;
+                       detect_rename = DIFF_DETECT_COPY;
                        diff_score_opt = diff_scoreopt_parse(arg);
                        continue;
                }