Code

Merge branch 'jn/gitweb-unspecified-action' into maint-1.7.8
[git.git] / bundle.c
index ff97adcb891caf98dcc655e71e29eaec5dae0135..8a1d53ba29a434139123bd7d4e37db47ba8728cb 100644 (file)
--- a/bundle.c
+++ b/bundle.c
@@ -23,50 +23,102 @@ static void add_to_ref_list(const unsigned char *sha1, const char *name,
        list->nr++;
 }
 
-/* returns an fd */
-int read_bundle_header(const char *path, struct bundle_header *header)
+/* Eventually this should go to strbuf.[ch] */
+static int strbuf_readline_fd(struct strbuf *sb, int fd)
 {
-       char buffer[1024];
-       int fd;
-       long fpos;
-       FILE *ffd = fopen(path, "rb");
+       strbuf_reset(sb);
+
+       while (1) {
+               char ch;
+               ssize_t len = xread(fd, &ch, 1);
+               if (len <= 0)
+                       return len;
+               strbuf_addch(sb, ch);
+               if (ch == '\n')
+                       break;
+       }
+       return 0;
+}
 
-       if (!ffd)
-               return error("could not open '%s'", path);
-       if (!fgets(buffer, sizeof(buffer), ffd) ||
-                       strcmp(buffer, bundle_signature)) {
-               fclose(ffd);
-               return error("'%s' does not look like a v2 bundle file", path);
+static int parse_bundle_header(int fd, struct bundle_header *header,
+                              const char *report_path)
+{
+       struct strbuf buf = STRBUF_INIT;
+       int status = 0;
+
+       /* The bundle header begins with the signature */
+       if (strbuf_readline_fd(&buf, fd) ||
+           strcmp(buf.buf, bundle_signature)) {
+               if (report_path)
+                       error("'%s' does not look like a v2 bundle file",
+                             report_path);
+               status = -1;
+               goto abort;
        }
-       while (fgets(buffer, sizeof(buffer), ffd)
-                       && buffer[0] != '\n') {
-               int is_prereq = buffer[0] == '-';
-               int offset = is_prereq ? 1 : 0;
-               int len = strlen(buffer);
+
+       /* The bundle header ends with an empty line */
+       while (!strbuf_readline_fd(&buf, fd) &&
+              buf.len && buf.buf[0] != '\n') {
                unsigned char sha1[20];
-               struct ref_list *list = is_prereq ? &header->prerequisites
-                       : &header->references;
-               char delim;
-
-               if (len && buffer[len - 1] == '\n')
-                       buffer[len - 1] = '\0';
-               if (get_sha1_hex(buffer + offset, sha1)) {
-                       warning("unrecognized header: %s", buffer);
-                       continue;
+               int is_prereq = 0;
+
+               if (*buf.buf == '-') {
+                       is_prereq = 1;
+                       strbuf_remove(&buf, 0, 1);
+               }
+               strbuf_rtrim(&buf);
+
+               /*
+                * Tip lines have object name, SP, and refname.
+                * Prerequisites have object name that is optionally
+                * followed by SP and subject line.
+                */
+               if (get_sha1_hex(buf.buf, sha1) ||
+                   (40 <= buf.len && !isspace(buf.buf[40])) ||
+                   (!is_prereq && buf.len <= 40)) {
+                       if (report_path)
+                               error("unrecognized header: %s%s (%d)",
+                                     (is_prereq ? "-" : ""), buf.buf, (int)buf.len);
+                       status = -1;
+                       break;
+               } else {
+                       if (is_prereq)
+                               add_to_ref_list(sha1, "", &header->prerequisites);
+                       else
+                               add_to_ref_list(sha1, buf.buf + 41, &header->references);
                }
-               delim = buffer[40 + offset];
-               if (!isspace(delim) && (delim != '\0' || !is_prereq))
-                       die ("invalid header: %s", buffer);
-               add_to_ref_list(sha1, isspace(delim) ?
-                               buffer + 41 + offset : "", list);
        }
-       fpos = ftell(ffd);
-       fclose(ffd);
-       fd = open(path, O_RDONLY);
+
+ abort:
+       if (status) {
+               close(fd);
+               fd = -1;
+       }
+       strbuf_release(&buf);
+       return fd;
+}
+
+int read_bundle_header(const char *path, struct bundle_header *header)
+{
+       int fd = open(path, O_RDONLY);
+
        if (fd < 0)
                return error("could not open '%s'", path);
-       lseek(fd, fpos, SEEK_SET);
-       return fd;
+       return parse_bundle_header(fd, header, path);
+}
+
+int is_bundle(const char *path, int quiet)
+{
+       struct bundle_header header;
+       int fd = open(path, O_RDONLY);
+
+       if (fd < 0)
+               return 0;
+       memset(&header, 0, sizeof(header));
+       fd = parse_bundle_header(fd, &header, quiet ? NULL : path);
+       if (fd >= 0)
+               close(fd);
+       return (fd >= 0);
 }
 
 static int list_refs(struct ref_list *r, int argc, const char **argv)
@@ -122,11 +174,8 @@ int verify_bundle(struct bundle_header *header, int verbose)
        req_nr = revs.pending.nr;
        setup_revisions(2, argv, &revs, NULL);
 
-       memset(&refs, 0, sizeof(struct object_array));
-       for (i = 0; i < revs.pending.nr; i++) {
-               struct object_array_entry *e = revs.pending.objects + i;
-               add_object_array(e->item, e->name, &refs);
-       }
+       refs = revs.pending;
+       revs.leak_pending = 1;
 
        if (prepare_revision_walk(&revs))
                die("revision walk setup failed");
@@ -144,8 +193,8 @@ int verify_bundle(struct bundle_header *header, int verbose)
                                refs.objects[i].name);
                }
 
-       for (i = 0; i < refs.nr; i++)
-               clear_commit_marks((struct commit *)refs.objects[i].item, -1);
+       clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS);
+       free(refs.objects);
 
        if (verbose) {
                struct ref_list *r;
@@ -200,7 +249,7 @@ int create_bundle(struct bundle_header *header, const char *path,
        int bundle_fd = -1;
        int bundle_to_stdout;
        const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
-       const char **argv_pack = xmalloc(5 * sizeof(const char *));
+       const char **argv_pack = xmalloc(6 * sizeof(const char *));
        int i, ref_count = 0;
        char buffer[1024];
        struct rev_info revs;
@@ -346,7 +395,8 @@ int create_bundle(struct bundle_header *header, const char *path,
        argv_pack[1] = "--all-progress-implied";
        argv_pack[2] = "--stdout";
        argv_pack[3] = "--thin";
-       argv_pack[4] = NULL;
+       argv_pack[4] = "--delta-base-offset";
+       argv_pack[5] = NULL;
        memset(&rls, 0, sizeof(rls));
        rls.argv = argv_pack;
        rls.in = -1;
@@ -372,17 +422,22 @@ int create_bundle(struct bundle_header *header, const char *path,
        close(rls.in);
        if (finish_command(&rls))
                return error ("pack-objects died");
-       if (!bundle_to_stdout)
-               commit_lock_file(&lock);
+       if (!bundle_to_stdout) {
+               if (commit_lock_file(&lock))
+                       die_errno("cannot create '%s'", path);
+       }
        return 0;
 }
 
-int unbundle(struct bundle_header *header, int bundle_fd)
+int unbundle(struct bundle_header *header, int bundle_fd, int flags)
 {
        const char *argv_index_pack[] = {"index-pack",
-               "--fix-thin", "--stdin", NULL};
+                                        "--fix-thin", "--stdin", NULL, NULL};
        struct child_process ip;
 
+       if (flags & BUNDLE_VERBOSE)
+               argv_index_pack[3] = "-v";
+
        if (verify_bundle(header, 0))
                return -1;
        memset(&ip, 0, sizeof(ip));