global: replace hard coded hash length

[cgit.git] / ui-patch.c

diff --git a/ui-patch.c b/ui-patch.c
index fd6316b56b850e79ec48f5e22fc9417f0a7df03f..4ac03cbef1d810901c185aedbd7b4b58bbff998f 100644 (file)
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -11,16 +11,23 @@
 #include "html.h"
 #include "ui-shared.h"
 
+/* two commit hashes with two dots in between and termination */
+#define REV_RANGE_LEN 2 * GIT_MAX_HEXSZ + 3
+
 void cgit_print_patch(const char *new_rev, const char *old_rev,
                      const char *prefix)
 {
        struct rev_info rev;
        struct commit *commit;
        struct object_id new_rev_oid, old_rev_oid;
-       char rev_range[2 * 40 + 3];
-       char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
+       char rev_range[REV_RANGE_LEN];
+       const char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range, "--", prefix, NULL };
+       int rev_argc = ARRAY_SIZE(rev_argv) - 1;
        char *patchname;
 
+       if (!prefix)
+               rev_argc--;
+
        if (!new_rev)
                new_rev = ctx.qry.head;
 
@@ -29,7 +36,7 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
                                "Bad object id: %s", new_rev);
                return;
        }
-       commit = lookup_commit_reference(new_rev_oid.hash);
+       commit = lookup_commit_reference(the_repository, &new_rev_oid);
        if (!commit) {
                cgit_print_error_page(404, "Not found",
                                "Bad commit reference: %s", new_rev);
@@ -42,7 +49,7 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
                                        "Bad object id: %s", old_rev);
                        return;
                }
-               if (!lookup_commit_reference(old_rev_oid.hash)) {
+               if (!lookup_commit_reference(the_repository, &old_rev_oid)) {
                        cgit_print_error_page(404, "Not found",
                                        "Bad commit reference: %s", old_rev);
                        return;
@@ -54,9 +61,9 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
        }
 
        if (is_null_oid(&old_rev_oid)) {
-               memcpy(rev_range, oid_to_hex(&new_rev_oid), GIT_SHA1_HEXSZ + 1);
+               memcpy(rev_range, oid_to_hex(&new_rev_oid), the_hash_algo->hexsz + 1);
        } else {
-               sprintf(rev_range, "%s..%s", oid_to_hex(&old_rev_oid),
+               xsnprintf(rev_range, REV_RANGE_LEN, "%s..%s", oid_to_hex(&old_rev_oid),
                        oid_to_hex(&new_rev_oid));
        }
 
@@ -79,14 +86,13 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
        rev.max_parents = 1;
        rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
                        DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
-       setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
-                       NULL);
+       if (prefix)
+               rev.diffopt.stat_sep = fmt("(limited to '%s')\n\n", prefix);
+       setup_revisions(rev_argc, rev_argv, &rev, NULL);
        prepare_revision_walk(&rev);
 
        while ((commit = get_revision(&rev)) != NULL) {
                log_tree_commit(&rev, commit);
                printf("-- \ncgit %s\n\n", cgit_version);
        }
-
-       fflush(stdout);
 }