index: make the index file format extensible.

diff --git a/diff-files.c b/diff-files.c
index 4cafd3ea20080c408ffba1584202e8feb6d53764..ffbef48b2e05869a0a74ea7df53ee80106aa81b3 100644 (file)
--- a/diff-files.c
+++ b/diff-files.c
@@ -5,12 +5,14 @@
  */
 #include "cache.h"
 #include "diff.h"
+#include "commit.h"
+#include "revision.h"
 
 static const char diff_files_usage[] =
 "git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
 COMMON_DIFF_OPTIONS_HELP;
 
-static struct diff_options diff_options;
+static struct rev_info rev;
 static int silent = 0;
 static int diff_unmerged_stage = 2;
 static int combine_merges = 0;
@@ -18,12 +20,12 @@ static int dense_combined_merges = 0;
 
 static void show_unmerge(const char *path)
 {
-       diff_unmerge(&diff_options, path);
+       diff_unmerge(&rev.diffopt, path);
 }
 
 static void show_file(int pfx, struct cache_entry *ce)
 {
-       diff_addremove(&diff_options, pfx, ntohl(ce->ce_mode),
+       diff_addremove(&rev.diffopt, pfx, ntohl(ce->ce_mode),
                       ce->sha1, ce->name, NULL);
 }
 
@@ -31,7 +33,7 @@ static void show_modified(int oldmode, int mode,
                          const unsigned char *old_sha1, const unsigned char *sha1,
                          char *path)
 {
-       diff_change(&diff_options, oldmode, mode, old_sha1, sha1, path, NULL);
+       diff_change(&rev.diffopt, oldmode, mode, old_sha1, sha1, path, NULL);
 }
 
 int main(int argc, const char **argv)
@@ -41,7 +43,7 @@ int main(int argc, const char **argv)
        int entries, i;
 
        git_config(git_diff_config);
-       diff_setup(&diff_options);
+       diff_setup(&rev.diffopt);
        while (1 < argc && argv[1][0] == '-') {
                if (!strcmp(argv[1], "--")) {
                        argv++;
@@ -74,7 +76,7 @@ int main(int argc, const char **argv)
                        dense_combined_merges = combine_merges = 1;
                else {
                        int diff_opt_cnt;
-                       diff_opt_cnt = diff_opt_parse(&diff_options,
+                       diff_opt_cnt = diff_opt_parse(&rev.diffopt,
                                                      argv+1, argc-1);
                        if (diff_opt_cnt < 0)
                                usage(diff_files_usage);
@@ -88,15 +90,14 @@ int main(int argc, const char **argv)
                }
                argv++; argc--;
        }
-       if (combine_merges) {
-               diff_options.output_format = DIFF_FORMAT_PATCH;
-       }
+       if (dense_combined_merges)
+               rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 
        /* Find the directory, and set up the pathspec */
        pathspec = get_pathspec(prefix, argv + 1);
        entries = read_cache();
 
-       if (diff_setup_done(&diff_options) < 0)
+       if (diff_setup_done(&rev.diffopt) < 0)
                usage(diff_files_usage);
 
        /* At this point, if argc == 1, then we are doing everything.
@@ -119,7 +120,7 @@ int main(int argc, const char **argv)
                if (ce_stage(ce)) {
                        struct {
                                struct combine_diff_path p;
-                               unsigned char fill[4][20];
+                               struct combine_diff_parent filler[5];
                        } combine;
                        int num_compare_stages = 0;
 
@@ -128,7 +129,10 @@ int main(int argc, const char **argv)
                        combine.p.path = xmalloc(combine.p.len + 1);
                        memcpy(combine.p.path, ce->name, combine.p.len);
                        combine.p.path[combine.p.len] = 0;
-                       memset(combine.p.sha1, 0, 100);
+                       combine.p.mode = 0;
+                       memset(combine.p.sha1, 0, 20);
+                       memset(&combine.p.parent[0], 0,
+                              sizeof(combine.filler));
 
                        while (i < entries) {
                                struct cache_entry *nce = active_cache[i];
@@ -142,9 +146,14 @@ int main(int argc, const char **argv)
                                 */
                                stage = ce_stage(nce);
                                if (2 <= stage) {
+                                       int mode = ntohl(nce->ce_mode);
                                        num_compare_stages++;
-                                       memcpy(combine.p.parent_sha1[stage-2],
+                                       memcpy(combine.p.parent[stage-2].sha1,
                                               nce->sha1, 20);
+                                       combine.p.parent[stage-2].mode =
+                                               canon_mode(mode);
+                                       combine.p.parent[stage-2].status =
+                                               DIFF_STATUS_MODIFIED;
                                }
 
                                /* diff against the proper unmerged stage */
@@ -160,7 +169,7 @@ int main(int argc, const char **argv)
                        if (combine_merges && num_compare_stages == 2) {
                                show_combined_diff(&combine.p, 2,
                                                   dense_combined_merges,
-                                                  NULL, 0);
+                                                  &rev);
                                free(combine.p.path);
                                continue;
                        }
@@ -185,12 +194,12 @@ int main(int argc, const char **argv)
                        show_file('-', ce);
                        continue;
                }
-               changed = ce_match_stat(ce, &st);
-               if (!changed && !diff_options.find_copies_harder)
+               changed = ce_match_stat(ce, &st, 0);
+               if (!changed && !rev.diffopt.find_copies_harder)
                        continue;
                oldmode = ntohl(ce->ce_mode);
 
-               newmode = DIFF_FILE_CANON_MODE(st.st_mode);
+               newmode = canon_mode(st.st_mode);
                if (!trust_executable_bit &&
                    S_ISREG(newmode) && S_ISREG(oldmode) &&
                    ((newmode ^ oldmode) == 0111))
@@ -199,7 +208,7 @@ int main(int argc, const char **argv)
                              ce->sha1, (changed ? null_sha1 : ce->sha1),
                              ce->name);
        }
-       diffcore_std(&diff_options);
-       diff_flush(&diff_options);
+       diffcore_std(&rev.diffopt);
+       diff_flush(&rev.diffopt);
        return 0;
 }