Make path-limiting be incremental when possible.

diff --git a/diff-stages.c b/diff-stages.c
index cbaba552b380403d3830b80ed3e65faacb4addc8..9968d6ce1c4b361962900040afdfe431e39deb61 100644 (file)
--- a/diff-stages.c
+++ b/diff-stages.c
@@ -5,19 +5,9 @@
 #include "cache.h"
 #include "diff.h"
 
-static int diff_output_format = DIFF_FORMAT_RAW;
-static int diff_line_termination = '\n';
-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 struct diff_options diff_options;
 
-static char *diff_stages_usage =
+static const char diff_stages_usage[] =
 "git-diff-stages [<common diff options>] <stage1> <stage2> [<path>...]"
 COMMON_DIFF_OPTIONS_HELP;
 
@@ -47,15 +37,16 @@ static void diff_stages(int stage1, int stage2)
                if (!one && !two)
                        continue;
                if (!one)
-                       diff_addremove('+', ntohl(two->ce_mode),
+                       diff_addremove(&diff_options, '+', ntohl(two->ce_mode),
                                       two->sha1, name, NULL);
                else if (!two)
-                       diff_addremove('-', ntohl(one->ce_mode),
+                       diff_addremove(&diff_options, '-', ntohl(one->ce_mode),
                                       one->sha1, name, NULL);
                else if (memcmp(one->sha1, two->sha1, 20) ||
                         (one->ce_mode != two->ce_mode) ||
-                        find_copies_harder)
-                       diff_change(ntohl(one->ce_mode), ntohl(two->ce_mode),
+                        diff_options.find_copies_harder)
+                       diff_change(&diff_options,
+                                   ntohl(one->ce_mode), ntohl(two->ce_mode),
                                    one->sha1, two->sha1, name, NULL);
        }
 }
@@ -64,45 +55,29 @@ int main(int ac, const char **av)
 {
        int stage1, stage2;
 
+       setup_git_directory();
+
+       git_config(git_diff_config);
        read_cache();
+       diff_setup(&diff_options);
        while (1 < ac && av[1][0] == '-') {
                const char *arg = av[1];
                if (!strcmp(arg, "-r"))
                        ; /* as usual */
-               else if (!strcmp(arg, "-p") || !strcmp(arg, "-u"))
-                       diff_output_format = DIFF_FORMAT_PATCH;
-               else if (!strncmp(arg, "-B", 2)) {
-                       if ((diff_break_opt = diff_scoreopt_parse(arg)) == -1)
-                               usage(diff_stages_usage);
-               }
-               else if (!strncmp(arg, "-M", 2)) {
-                       detect_rename = DIFF_DETECT_RENAME;
-                       if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
+               else {
+                       int diff_opt_cnt;
+                       diff_opt_cnt = diff_opt_parse(&diff_options,
+                                                     av+1, ac-1);
+                       if (diff_opt_cnt < 0)
                                usage(diff_stages_usage);
-               }
-               else if (!strncmp(arg, "-C", 2)) {
-                       detect_rename = DIFF_DETECT_COPY;
-                       if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
+                       else if (diff_opt_cnt) {
+                               av += diff_opt_cnt;
+                               ac -= diff_opt_cnt;
+                               continue;
+                       }
+                       else
                                usage(diff_stages_usage);
                }
-               else if (!strcmp(arg, "--find-copies-harder"))
-                       find_copies_harder = 1;
-               else if (!strcmp(arg, "-z"))
-                       diff_line_termination = 0;
-               else if (!strcmp(arg, "--name-only"))
-                       diff_output_format = DIFF_FORMAT_NAME;
-               else if (!strcmp(arg, "-R"))
-                       diff_setup_opt |= DIFF_SETUP_REVERSE;
-               else if (!strncmp(arg, "-S", 2))
-                       pickaxe = arg + 2;
-               else if (!strncmp(arg, "-O", 2))
-                       orderfile = arg + 2;
-               else if (!strncmp(arg, "--diff-filter=", 14))
-                       diff_filter = arg + 14;
-               else if (!strcmp(arg, "--pickaxe-all"))
-                       pickaxe_opts = DIFF_PICKAXE_ALL;
-               else
-                       usage(diff_stages_usage);
                ac--; av++;
        }
 
@@ -110,21 +85,17 @@ int main(int ac, const char **av)
            sscanf(av[1], "%d", &stage1) != 1 ||
            ! (0 <= stage1 && stage1 <= 3) ||
            sscanf(av[2], "%d", &stage2) != 1 ||
-           ! (0 <= stage2 && stage2 <= 3) ||
-           (find_copies_harder && detect_rename != DIFF_DETECT_COPY))
+           ! (0 <= stage2 && stage2 <= 3))
                usage(diff_stages_usage);
 
        av += 3; /* The rest from av[0] are for paths restriction. */
-       diff_setup(diff_setup_opt);
+       diff_options.paths = av;
 
-       diff_stages(stage1, stage2);
+       if (diff_setup_done(&diff_options) < 0)
+               usage(diff_stages_usage);
 
-       diffcore_std(av,
-                    detect_rename, diff_score_opt,
-                    pickaxe, pickaxe_opts,
-                    diff_break_opt,
-                    orderfile,
-                    diff_filter);
-       diff_flush(diff_output_format, diff_line_termination);
+       diff_stages(stage1, stage2);
+       diffcore_std(&diff_options);
+       diff_flush(&diff_options);
        return 0;
 }