Make fetch/pull scripts terminate cleanly on errors

diff --git a/diff-files.c b/diff-files.c
index d3b80a07255511097fd0eebe94fc844f63d5e152..5c895cca75666818dc6ebc2bfa9aa0875af73756 100644 (file)
--- a/diff-files.c
+++ b/diff-files.c
@@ -7,31 +7,18 @@
 #include "diff.h"
 
 static const char *diff_files_usage =
-"git-diff-files [-p] [-q] [-r] [-z] [-M] [-C] [-R] [-S<string>] [paths...]";
+"git-diff-files [-p] [-q] [-r] [-z] [-M] [-C] [-R] [-S<string>] [-O<orderfile>] [paths...]";
 
-static int generate_patch = 0;
-static int line_termination = '\n';
+static int diff_output_format = DIFF_FORMAT_HUMAN;
 static int detect_rename = 0;
-static int reverse_diff = 0;
+static int diff_setup_opt = 0;
 static int diff_score_opt = 0;
-static char *pickaxe = 0;
+static const char *pickaxe = NULL;
+static int pickaxe_opts = 0;
+static int diff_break_opt = -1;
+static const char *orderfile = NULL;
 static int silent = 0;
 
-static int matches_pathspec(struct cache_entry *ce, char **spec, int cnt)
-{
-       int i;
-       int namelen = ce_namelen(ce);
-       for (i = 0; i < cnt; i++) {
-               int speclen = strlen(spec[i]);
-               if (! strncmp(spec[i], ce->name, speclen) &&
-                   speclen <= namelen &&
-                   (ce->name[speclen] == 0 ||
-                    ce->name[speclen] == '/'))
-                       return 1;
-       }
-       return 0;
-}
-
 static void show_unmerge(const char *path)
 {
        diff_unmerge(path);
@@ -49,7 +36,7 @@ static void show_modified(int oldmode, int mode,
        diff_change(oldmode, mode, old_sha1, sha1, path, NULL);
 }
 
-int main(int argc, char **argv)
+int main(int argc, const char **argv)
 {
        static const unsigned char null_sha1[20] = { 0, };
        int entries = read_cache();
@@ -57,7 +44,7 @@ int main(int argc, char **argv)
 
        while (1 < argc && argv[1][0] == '-') {
                if (!strcmp(argv[1], "-p"))
-                       generate_patch = 1;
+                       diff_output_format = DIFF_FORMAT_PATCH;
                else if (!strcmp(argv[1], "-q"))
                        silent = 1;
                else if (!strcmp(argv[1], "-r"))
@@ -65,19 +52,31 @@ int main(int argc, char **argv)
                else if (!strcmp(argv[1], "-s"))
                        ; /* no-op */
                else if (!strcmp(argv[1], "-z"))
-                       line_termination = 0;
+                       diff_output_format = DIFF_FORMAT_MACHINE;
                else if (!strcmp(argv[1], "-R"))
-                       reverse_diff = 1;
-               else if (!strcmp(argv[1], "-S"))
+                       diff_setup_opt |= DIFF_SETUP_REVERSE;
+               else if (!strncmp(argv[1], "-S", 2))
                        pickaxe = argv[1] + 2;
+               else if (!strncmp(argv[1], "-O", 2))
+                       orderfile = argv[1] + 2;
+               else if (!strcmp(argv[1], "--pickaxe-all"))
+                       pickaxe_opts = DIFF_PICKAXE_ALL;
+               else if (!strncmp(argv[1], "-B", 2)) {
+                       if ((diff_break_opt =
+                            diff_scoreopt_parse(argv[1])) == -1)
+                               usage(diff_files_usage);
+               }
                else if (!strncmp(argv[1], "-M", 2)) {
-                       diff_score_opt = diff_scoreopt_parse(argv[1]);
-                       detect_rename = generate_patch = 1;
+                       if ((diff_score_opt =
+                            diff_scoreopt_parse(argv[1])) == -1)
+                               usage(diff_files_usage);
+                       detect_rename = DIFF_DETECT_RENAME;
                }
                else if (!strncmp(argv[1], "-C", 2)) {
-                       diff_score_opt = diff_scoreopt_parse(argv[1]);
-                       detect_rename = 2;
-                       generate_patch = 1;
+                       if ((diff_score_opt =
+                            diff_scoreopt_parse(argv[1])) == -1)
+                               usage(diff_files_usage);
+                       detect_rename = DIFF_DETECT_COPY;
                }
                else
                        usage(diff_files_usage);
@@ -92,20 +91,14 @@ int main(int argc, char **argv)
                exit(1);
        }
 
-       diff_setup(detect_rename, diff_score_opt, pickaxe,
-                  reverse_diff, (generate_patch ? -1 : line_termination),
-                  NULL, 0);
+       diff_setup(diff_setup_opt);
 
        for (i = 0; i < entries; i++) {
                struct stat st;
-               unsigned int oldmode, mode;
+               unsigned int oldmode;
                struct cache_entry *ce = active_cache[i];
                int changed;
 
-               if (1 < argc &&
-                   ! matches_pathspec(ce, argv+1, argc-1))
-                       continue;
-
                if (ce_stage(ce)) {
                        show_unmerge(ce->name);
                        while (i < entries &&
@@ -126,16 +119,19 @@ int main(int argc, char **argv)
                        continue;
                }
                changed = ce_match_stat(ce, &st);
-               if (!changed)
+               if (!changed && detect_rename < DIFF_DETECT_COPY)
                        continue;
 
                oldmode = ntohl(ce->ce_mode);
-               mode = (S_ISLNK(st.st_mode) ? S_IFLNK :
-                       S_IFREG | ce_permissions(st.st_mode));
-
-               show_modified(oldmode, mode, ce->sha1, null_sha1,
+               show_modified(oldmode, DIFF_FILE_CANON_MODE(st.st_mode),
+                             ce->sha1, null_sha1,
                              ce->name);
        }
-       diff_flush();
+       diffcore_std((1 < argc) ? argv + 1 : NULL,
+                    detect_rename, diff_score_opt,
+                    pickaxe, pickaxe_opts,
+                    diff_break_opt,
+                    orderfile);
+       diff_flush(diff_output_format, 1);
        return 0;
 }