parse_color: refactor color storage
[gitweb.git] / builtin / fast-export.c
index 8e19058744756e9978eac6244156ed1c27f1e20e..92b4624a4b93ff50c661e44242d508aed31877eb 100644 (file)
@@ -17,6 +17,7 @@
 #include "utf8.h"
 #include "parse-options.h"
 #include "quote.h"
+#include "remote.h"
 
 static const char *fast_export_usage[] = {
        N_("git fast-export [rev-list-opts]"),
@@ -30,6 +31,9 @@ static int fake_missing_tagger;
 static int use_done_feature;
 static int no_data;
 static int full_tree;
+static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
+static struct refspec *refspecs;
+static int refspecs_nr;
 
 static int parse_opt_signed_tag_mode(const struct option *opt,
                                     const char *arg, int unset)
@@ -278,6 +282,7 @@ static const char *find_encoding(const char *begin, const char *end)
 static void handle_commit(struct commit *commit, struct rev_info *rev)
 {
        int saved_output_format = rev->diffopt.output_format;
+       const char *commit_buffer;
        const char *author, *author_end, *committer, *committer_end;
        const char *encoding, *message;
        char *reencoded = NULL;
@@ -286,8 +291,9 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
 
        rev->diffopt.output_format = DIFF_FORMAT_CALLBACK;
 
-       parse_commit(commit);
-       author = strstr(commit->buffer, "\nauthor ");
+       parse_commit_or_die(commit);
+       commit_buffer = get_commit_buffer(commit, NULL);
+       author = strstr(commit_buffer, "\nauthor ");
        if (!author)
                die ("Could not find author in commit %s",
                     sha1_to_hex(commit->object.sha1));
@@ -307,7 +313,7 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
        if (commit->parents &&
            get_object_mark(&commit->parents->item->object) != 0 &&
            !full_tree) {
-               parse_commit(commit->parents->item);
+               parse_commit_or_die(commit->parents->item);
                diff_tree_sha1(commit->parents->item->tree->object.sha1,
                               commit->tree->object.sha1, "", &rev->diffopt);
        }
@@ -334,6 +340,7 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
                          ? strlen(message) : 0),
               reencoded ? reencoded : message ? message : "");
        free(reencoded);
+       unuse_commit_buffer(commit, commit_buffer);
 
        for (i = 0, p = commit->parents; p; p = p->next) {
                int mark = get_object_mark(&p->item->object);
@@ -475,7 +482,7 @@ static void handle_tag(const char *name, struct tag *tag)
                }
        }
 
-       if (!prefixcmp(name, "refs/tags/"))
+       if (starts_with(name, "refs/tags/"))
                name += 10;
        printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n",
               name, tagged_mark,
@@ -484,10 +491,32 @@ static void handle_tag(const char *name, struct tag *tag)
               (int)message_size, (int)message_size, message ? message : "");
 }
 
-static void get_tags_and_duplicates(struct rev_cmdline_info *info,
-                                   struct string_list *extra_refs)
+static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name)
+{
+       switch (e->item->type) {
+       case OBJ_COMMIT:
+               return (struct commit *)e->item;
+       case OBJ_TAG: {
+               struct tag *tag = (struct tag *)e->item;
+
+               /* handle nested tags */
+               while (tag && tag->object.type == OBJ_TAG) {
+                       parse_object(tag->object.sha1);
+                       string_list_append(&extra_refs, full_name)->util = tag;
+                       tag = (struct tag *)tag->tagged;
+               }
+               if (!tag)
+                       die("Tag %s points nowhere?", e->name);
+               return (struct commit *)tag;
+               break;
+       }
+       default:
+               return NULL;
+       }
+}
+
+static void get_tags_and_duplicates(struct rev_cmdline_info *info)
 {
-       struct tag *tag;
        int i;
 
        for (i = 0; i < info->nr; i++) {
@@ -502,60 +531,54 @@ static void get_tags_and_duplicates(struct rev_cmdline_info *info,
                if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1)
                        continue;
 
-               switch (e->item->type) {
-               case OBJ_COMMIT:
-                       commit = (struct commit *)e->item;
-                       break;
-               case OBJ_TAG:
-                       tag = (struct tag *)e->item;
-
-                       /* handle nested tags */
-                       while (tag && tag->object.type == OBJ_TAG) {
-                               parse_object(tag->object.sha1);
-                               string_list_append(extra_refs, full_name)->util = tag;
-                               tag = (struct tag *)tag->tagged;
-                       }
-                       if (!tag)
-                               die ("Tag %s points nowhere?", e->name);
-                       switch(tag->object.type) {
-                       case OBJ_COMMIT:
-                               commit = (struct commit *)tag;
-                               break;
-                       case OBJ_BLOB:
-                               export_blob(tag->object.sha1);
-                               continue;
-                       default: /* OBJ_TAG (nested tags) is already handled */
-                               warning("Tag points to object of unexpected type %s, skipping.",
-                                       typename(tag->object.type));
-                               continue;
+               if (refspecs) {
+                       char *private;
+                       private = apply_refspecs(refspecs, refspecs_nr, full_name);
+                       if (private) {
+                               free(full_name);
+                               full_name = private;
                        }
-                       break;
-               default:
+               }
+
+               commit = get_commit(e, full_name);
+               if (!commit) {
                        warning("%s: Unexpected object of type %s, skipping.",
                                e->name,
                                typename(e->item->type));
                        continue;
                }
 
+               switch(commit->object.type) {
+               case OBJ_COMMIT:
+                       break;
+               case OBJ_BLOB:
+                       export_blob(commit->object.sha1);
+                       continue;
+               default: /* OBJ_TAG (nested tags) is already handled */
+                       warning("Tag points to object of unexpected type %s, skipping.",
+                               typename(commit->object.type));
+                       continue;
+               }
+
                /*
                 * This ref will not be updated through a commit, lets make
                 * sure it gets properly updated eventually.
                 */
                if (commit->util || commit->object.flags & SHOWN)
-                       string_list_append(extra_refs, full_name)->util = commit;
+                       string_list_append(&extra_refs, full_name)->util = commit;
                if (!commit->util)
                        commit->util = full_name;
        }
 }
 
-static void handle_tags_and_duplicates(struct string_list *extra_refs)
+static void handle_tags_and_duplicates(void)
 {
        struct commit *commit;
        int i;
 
-       for (i = extra_refs->nr - 1; i >= 0; i--) {
-               const char *name = extra_refs->items[i].string;
-               struct object *object = extra_refs->items[i].util;
+       for (i = extra_refs.nr - 1; i >= 0; i--) {
+               const char *name = extra_refs.items[i].string;
+               struct object *object = extra_refs.items[i].util;
                switch (object->type) {
                case OBJ_TAG:
                        handle_tag(name, (struct tag *)object);
@@ -653,14 +676,27 @@ static void import_marks(char *input_file)
        fclose(f);
 }
 
+static void handle_deletes(void)
+{
+       int i;
+       for (i = 0; i < refspecs_nr; i++) {
+               struct refspec *refspec = &refspecs[i];
+               if (*refspec->src)
+                       continue;
+
+               printf("reset %s\nfrom %s\n\n",
+                               refspec->dst, sha1_to_hex(null_sha1));
+       }
+}
+
 int cmd_fast_export(int argc, const char **argv, const char *prefix)
 {
        struct rev_info revs;
        struct object_array commits = OBJECT_ARRAY_INIT;
-       struct string_list extra_refs = STRING_LIST_INIT_NODUP;
        struct commit *commit;
        char *export_filename = NULL, *import_filename = NULL;
        uint32_t lastimportid;
+       struct string_list refspecs_list = STRING_LIST_INIT_NODUP;
        struct option options[] = {
                OPT_INTEGER(0, "progress", &progress,
                            N_("show progress after <n> objects")),
@@ -674,13 +710,15 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
                             N_("Dump marks to this file")),
                OPT_STRING(0, "import-marks", &import_filename, N_("file"),
                             N_("Import marks from this file")),
-               OPT_BOOLEAN(0, "fake-missing-tagger", &fake_missing_tagger,
-                            N_("Fake a tagger when tags lack one")),
-               OPT_BOOLEAN(0, "full-tree", &full_tree,
-                            N_("Output full tree for each commit")),
-               OPT_BOOLEAN(0, "use-done-feature", &use_done_feature,
+               OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger,
+                        N_("Fake a tagger when tags lack one")),
+               OPT_BOOL(0, "full-tree", &full_tree,
+                        N_("Output full tree for each commit")),
+               OPT_BOOL(0, "use-done-feature", &use_done_feature,
                             N_("Use the done feature to terminate the stream")),
                OPT_BOOL(0, "no-data", &no_data, N_("Skip output of blob data")),
+               OPT_STRING_LIST(0, "refspec", &refspecs_list, N_("refspec"),
+                            N_("Apply refspec to exported refs")),
                OPT_END()
        };
 
@@ -694,11 +732,27 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        revs.topo_order = 1;
        revs.show_source = 1;
        revs.rewrite_parents = 1;
+       argc = parse_options(argc, argv, prefix, options, fast_export_usage,
+                       PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN);
        argc = setup_revisions(argc, argv, &revs, NULL);
-       argc = parse_options(argc, argv, prefix, options, fast_export_usage, 0);
        if (argc > 1)
                usage_with_options (fast_export_usage, options);
 
+       if (refspecs_list.nr) {
+               const char **refspecs_str;
+               int i;
+
+               refspecs_str = xmalloc(sizeof(*refspecs_str) * refspecs_list.nr);
+               for (i = 0; i < refspecs_list.nr; i++)
+                       refspecs_str[i] = refspecs_list.items[i].string;
+
+               refspecs_nr = refspecs_list.nr;
+               refspecs = parse_fetch_refspec(refspecs_nr, refspecs_str);
+
+               string_list_clear(&refspecs_list, 1);
+               free(refspecs_str);
+       }
+
        if (use_done_feature)
                printf("feature done\n");
 
@@ -709,7 +763,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (import_filename && revs.prune_data.nr)
                full_tree = 1;
 
-       get_tags_and_duplicates(&revs.cmdline, &extra_refs);
+       get_tags_and_duplicates(&revs.cmdline);
 
        if (prepare_revision_walk(&revs))
                die("revision walk setup failed");
@@ -725,7 +779,8 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
                }
        }
 
-       handle_tags_and_duplicates(&extra_refs);
+       handle_tags_and_duplicates();
+       handle_deletes();
 
        if (export_filename && lastimportid != last_idnum)
                export_marks(export_filename);
@@ -733,5 +788,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
        if (use_done_feature)
                printf("done\n");
 
+       free_refspec(refspecs_nr, refspecs);
+
        return 0;
 }