[PATCH] git-apply: Don't barf when --stat'ing a diff with no line changes.

[git.git] / diff-tree.c

diff --git a/diff-tree.c b/diff-tree.c
index 6f8dc20..7446e09 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -11,12 +11,14 @@ static int show_tree_entry_in_recursive = 0;
 static int read_stdin = 0;
 static int diff_output_format = DIFF_FORMAT_HUMAN;
 static int detect_rename = 0;
+static int find_copies_harder = 0;
 static int diff_setup_opt = 0;
 static int diff_score_opt = 0;
 static const char *pickaxe = NULL;
 static int pickaxe_opts = 0;
 static int diff_break_opt = -1;
 static const char *orderfile = NULL;
+static const char *diff_filter = NULL;
 static const char *header = NULL;
 static const char *header_prefix = "";
 static enum cmit_fmt commit_format = CMIT_FMT_RAW;
@@ -115,7 +117,7 @@ static int compare_tree_entry(void *tree1, unsigned long size1, void *tree2, uns
                show_file("+", tree2, size2, base);
                return 1;
        }
-       if (!memcmp(sha1, sha2, 20) && mode1 == mode2)
+       if (!find_copies_harder && !memcmp(sha1, sha2, 20) && mode1 == mode2)
                return 0;
 
        /*
@@ -267,13 +269,14 @@ static void call_diff_setup(void)
 
 static int call_diff_flush(void)
 {
-       diffcore_std(0,
+       diffcore_std(NULL,
                     detect_rename, diff_score_opt,
                     pickaxe, pickaxe_opts,
                     diff_break_opt,
-                    orderfile);
+                    orderfile,
+                    diff_filter);
        if (diff_queue_is_empty()) {
-               diff_flush(DIFF_FORMAT_NO_OUTPUT, 0);
+               diff_flush(DIFF_FORMAT_NO_OUTPUT);
                return 0;
        }
        if (header) {
@@ -284,7 +287,7 @@ static int call_diff_flush(void)
                printf(fmt, header, 0);
                header = NULL;
        }
-       diff_flush(diff_output_format, 1);
+       diff_flush(diff_output_format);
        return 1;
 }
 
@@ -398,7 +401,20 @@ static int diff_tree_stdin(char *line)
 }
 
 static char *diff_tree_usage =
-"git-diff-tree [-p] [-r] [-z] [--stdin] [-M] [-C] [-R] [-S<string>] [-O<orderfile>] [-m] [-s] [-v] [-t] <tree-ish> <tree-ish>";
+"git-diff-tree [-p] [-r] [-z] [--stdin] [-m] [-s] [-v] [--pretty] [-t] [-R] [-B] [-M] [-C] [--find-copies-header] [-O<orderfile>] [-S<string>] [--pickaxe-all] <tree-ish> <tree-ish>";
+
+static enum cmit_fmt get_commit_format(const char *arg)
+{
+       if (!*arg)
+               return CMIT_FMT_DEFAULT;
+       if (!strcmp(arg, "=raw"))
+               return CMIT_FMT_RAW;
+       if (!strcmp(arg, "=medium"))
+               return CMIT_FMT_MEDIUM;
+       if (!strcmp(arg, "=short"))
+               return CMIT_FMT_SHORT;
+       usage(diff_tree_usage);
+}
 
 int main(int argc, const char **argv)
 {
@@ -454,6 +470,10 @@ int main(int argc, const char **argv)
                        orderfile = arg + 2;
                        continue;
                }
+               if (!strncmp(arg, "--diff-filter=", 14)) {
+                       diff_filter = arg + 14;
+                       continue;
+               }
                if (!strcmp(arg, "--pickaxe-all")) {
                        pickaxe_opts = DIFF_PICKAXE_ALL;
                        continue;
@@ -475,6 +495,10 @@ int main(int argc, const char **argv)
                                usage(diff_tree_usage);
                        continue;
                }
+               if (!strcmp(arg, "--find-copies-harder")) {
+                       find_copies_harder = 1;
+                       continue;
+               }
                if (!strcmp(arg, "-z")) {
                        diff_output_format = DIFF_FORMAT_MACHINE;
                        continue;
@@ -492,6 +516,12 @@ int main(int argc, const char **argv)
                        header_prefix = "diff-tree ";
                        continue;
                }
+               if (!strncmp(arg, "--pretty", 8)) {
+                       verbose_header = 1;
+                       header_prefix = "diff-tree ";
+                       commit_format = get_commit_format(arg+8);
+                       continue;
+               }
                if (!strcmp(arg, "--stdin")) {
                        read_stdin = 1;
                        continue;
@@ -502,6 +532,8 @@ int main(int argc, const char **argv)
                }
                usage(diff_tree_usage);
        }
+       if (find_copies_harder && detect_rename != DIFF_DETECT_COPY)
+               usage(diff_tree_usage);
 
        if (argc > 0) {
                int i;