Submodules: Use "ignore" settings from .gitmodules too for diff and status
[gitweb.git] / revision.c
index 34f9ab98d1872770ef4d54014c31ece6eb7c8c39..7e82efd9324e84582732485c53c6c25a24c29997 100644 (file)
@@ -12,6 +12,7 @@
 #include "patch-ids.h"
 #include "decorate.h"
 #include "log-tree.h"
+#include "string-list.h"
 
 volatile show_early_output_fn_t show_early_output;
 
@@ -134,10 +135,20 @@ static void add_pending_object_with_mode(struct rev_info *revs, struct object *o
 {
        if (revs->no_walk && (obj->flags & UNINTERESTING))
                revs->no_walk = 0;
-       if (revs->reflog_info && obj->type == OBJ_COMMIT &&
-                       add_reflog_for_walk(revs->reflog_info,
-                               (struct commit *)obj, name))
-               return;
+       if (revs->reflog_info && obj->type == OBJ_COMMIT) {
+               struct strbuf buf = STRBUF_INIT;
+               int len = interpret_branch_name(name, &buf);
+               int st;
+
+               if (0 < len && name[len] && buf.len)
+                       strbuf_addstr(&buf, name + len);
+               st = add_reflog_for_walk(revs->reflog_info,
+                                        (struct commit *)obj,
+                                        buf.buf[0] ? buf.buf: name);
+               strbuf_release(&buf);
+               if (st)
+                       return;
+       }
        add_object_array_with_mode(obj, name, &revs->pending, mode);
 }
 
@@ -268,7 +279,7 @@ static int tree_difference = REV_TREE_SAME;
 static void file_add_remove(struct diff_options *options,
                    int addremove, unsigned mode,
                    const unsigned char *sha1,
-                   const char *fullpath)
+                   const char *fullpath, unsigned dirty_submodule)
 {
        int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD;
 
@@ -281,7 +292,8 @@ static void file_change(struct diff_options *options,
                 unsigned old_mode, unsigned new_mode,
                 const unsigned char *old_sha1,
                 const unsigned char *new_sha1,
-                const char *fullpath)
+                const char *fullpath,
+                unsigned old_dirty_submodule, unsigned new_dirty_submodule)
 {
        tree_difference = REV_TREE_DIFFERENT;
        DIFF_OPT_SET(options, HAS_CHANGES);
@@ -536,6 +548,9 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
                        right_count++;
        }
 
+       if (!left_count || !right_count)
+               return;
+
        left_first = left_count < right_count;
        init_patch_ids(&ids);
        if (revs->diffopt.nr_paths) {
@@ -631,6 +646,93 @@ static int still_interesting(struct commit_list *src, unsigned long date, int sl
        return slop-1;
 }
 
+/*
+ * "rev-list --ancestry-path A..B" computes commits that are ancestors
+ * of B but not ancestors of A but further limits the result to those
+ * that are descendants of A.  This takes the list of bottom commits and
+ * the result of "A..B" without --ancestry-path, and limits the latter
+ * further to the ones that can reach one of the commits in "bottom".
+ */
+static void limit_to_ancestry(struct commit_list *bottom, struct commit_list *list)
+{
+       struct commit_list *p;
+       struct commit_list *rlist = NULL;
+       int made_progress;
+
+       /*
+        * Reverse the list so that it will be likely that we would
+        * process parents before children.
+        */
+       for (p = list; p; p = p->next)
+               commit_list_insert(p->item, &rlist);
+
+       for (p = bottom; p; p = p->next)
+               p->item->object.flags |= TMP_MARK;
+
+       /*
+        * Mark the ones that can reach bottom commits in "list",
+        * in a bottom-up fashion.
+        */
+       do {
+               made_progress = 0;
+               for (p = rlist; p; p = p->next) {
+                       struct commit *c = p->item;
+                       struct commit_list *parents;
+                       if (c->object.flags & (TMP_MARK | UNINTERESTING))
+                               continue;
+                       for (parents = c->parents;
+                            parents;
+                            parents = parents->next) {
+                               if (!(parents->item->object.flags & TMP_MARK))
+                                       continue;
+                               c->object.flags |= TMP_MARK;
+                               made_progress = 1;
+                               break;
+                       }
+               }
+       } while (made_progress);
+
+       /*
+        * NEEDSWORK: decide if we want to remove parents that are
+        * not marked with TMP_MARK from commit->parents for commits
+        * in the resulting list.  We may not want to do that, though.
+        */
+
+       /*
+        * The ones that are not marked with TMP_MARK are uninteresting
+        */
+       for (p = list; p; p = p->next) {
+               struct commit *c = p->item;
+               if (c->object.flags & TMP_MARK)
+                       continue;
+               c->object.flags |= UNINTERESTING;
+       }
+
+       /* We are done with the TMP_MARK */
+       for (p = list; p; p = p->next)
+               p->item->object.flags &= ~TMP_MARK;
+       for (p = bottom; p; p = p->next)
+               p->item->object.flags &= ~TMP_MARK;
+       free_commit_list(rlist);
+}
+
+/*
+ * Before walking the history, keep the set of "negative" refs the
+ * caller has asked to exclude.
+ *
+ * This is used to compute "rev-list --ancestry-path A..B", as we need
+ * to filter the result of "A..B" further to the ones that can actually
+ * reach A.
+ */
+static struct commit_list *collect_bottom_commits(struct commit_list *list)
+{
+       struct commit_list *elem, *bottom = NULL;
+       for (elem = list; elem; elem = elem->next)
+               if (elem->item->object.flags & UNINTERESTING)
+                       commit_list_insert(elem->item, &bottom);
+       return bottom;
+}
+
 static int limit_list(struct rev_info *revs)
 {
        int slop = SLOP;
@@ -638,6 +740,13 @@ static int limit_list(struct rev_info *revs)
        struct commit_list *list = revs->commits;
        struct commit_list *newlist = NULL;
        struct commit_list **p = &newlist;
+       struct commit_list *bottom = NULL;
+
+       if (revs->ancestry_path) {
+               bottom = collect_bottom_commits(list);
+               if (!bottom)
+                       die("--ancestry-path given but there are no bottom commits");
+       }
 
        while (list) {
                struct commit_list *entry = list;
@@ -679,6 +788,11 @@ static int limit_list(struct rev_info *revs)
        if (revs->cherry_pick)
                cherry_pick_list(newlist, revs);
 
+       if (bottom) {
+               limit_to_ancestry(bottom, newlist);
+               free_commit_list(bottom);
+       }
+
        revs->commits = newlist;
        return 0;
 }
@@ -699,12 +813,18 @@ static int handle_one_ref(const char *path, const unsigned char *sha1, int flag,
        return 0;
 }
 
+static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs,
+       unsigned flags)
+{
+       cb->all_revs = revs;
+       cb->all_flags = flags;
+}
+
 static void handle_refs(struct rev_info *revs, unsigned flags,
                int (*for_each)(each_ref_fn, void *))
 {
        struct all_refs_cb cb;
-       cb.all_revs = revs;
-       cb.all_flags = flags;
+       init_all_refs_cb(&cb, revs, flags);
        for_each(handle_one_ref, &cb);
 }
 
@@ -791,7 +911,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
        revs->ignore_merges = 1;
        revs->simplify_history = 1;
        DIFF_OPT_SET(&revs->pruning, RECURSIVE);
-       DIFF_OPT_SET(&revs->pruning, QUIET);
+       DIFF_OPT_SET(&revs->pruning, QUICK);
        revs->pruning.add_remove = file_add_remove;
        revs->pruning.change = file_change;
        revs->lifo = 1;
@@ -806,6 +926,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
 
        revs->grep_filter.status_only = 1;
        revs->grep_filter.pattern_tail = &(revs->grep_filter.pattern_list);
+       revs->grep_filter.header_tail = &(revs->grep_filter.header_list);
        revs->grep_filter.regflags = REG_NEWLINE;
 
        diff_setup(&revs->diffopt);
@@ -1041,18 +1162,22 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 
        if (!prefixcmp(arg, "--max-count=")) {
                revs->max_count = atoi(arg + 12);
+               revs->no_walk = 0;
        } else if (!prefixcmp(arg, "--skip=")) {
                revs->skip_count = atoi(arg + 7);
        } else if ((*arg == '-') && isdigit(arg[1])) {
        /* accept -<digit>, like traditional "head" */
                revs->max_count = atoi(arg + 1);
+               revs->no_walk = 0;
        } else if (!strcmp(arg, "-n")) {
                if (argc <= 1)
                        return error("-n requires an argument");
                revs->max_count = atoi(argv[1]);
+               revs->no_walk = 0;
                return 2;
        } else if (!prefixcmp(arg, "-n")) {
                revs->max_count = atoi(arg + 2);
+               revs->no_walk = 0;
        } else if (!prefixcmp(arg, "--max-age=")) {
                revs->max_age = atoi(arg + 10);
        } else if (!prefixcmp(arg, "--since=")) {
@@ -1067,6 +1192,10 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->min_age = approxidate(arg + 8);
        } else if (!strcmp(arg, "--first-parent")) {
                revs->first_parent_only = 1;
+       } else if (!strcmp(arg, "--ancestry-path")) {
+               revs->ancestry_path = 1;
+               revs->simplify_history = 0;
+               revs->limited = 1;
        } else if (!strcmp(arg, "-g") || !strcmp(arg, "--walk-reflogs")) {
                init_reflog_walk(&revs->reflog_info);
        } else if (!strcmp(arg, "--default")) {
@@ -1124,6 +1253,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->boundary = 1;
        } else if (!strcmp(arg, "--left-right")) {
                revs->left_right = 1;
+       } else if (!strcmp(arg, "--count")) {
+               revs->count = 1;
        } else if (!strcmp(arg, "--cherry-pick")) {
                revs->cherry_pick = 1;
                revs->limited = 1;
@@ -1170,9 +1301,29 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--show-notes")) {
                revs->show_notes = 1;
                revs->show_notes_given = 1;
+       } else if (!prefixcmp(arg, "--show-notes=")) {
+               struct strbuf buf = STRBUF_INIT;
+               revs->show_notes = 1;
+               revs->show_notes_given = 1;
+               if (!revs->notes_opt.extra_notes_refs)
+                       revs->notes_opt.extra_notes_refs = xcalloc(1, sizeof(struct string_list));
+               if (!prefixcmp(arg+13, "refs/"))
+                       /* happy */;
+               else if (!prefixcmp(arg+13, "notes/"))
+                       strbuf_addstr(&buf, "refs/");
+               else
+                       strbuf_addstr(&buf, "refs/notes/");
+               strbuf_addstr(&buf, arg+13);
+               string_list_append(revs->notes_opt.extra_notes_refs,
+                                  strbuf_detach(&buf, NULL));
        } else if (!strcmp(arg, "--no-notes")) {
                revs->show_notes = 0;
                revs->show_notes_given = 1;
+       } else if (!strcmp(arg, "--standard-notes")) {
+               revs->show_notes_given = 1;
+               revs->notes_opt.suppress_default_notes = 0;
+       } else if (!strcmp(arg, "--no-standard-notes")) {
+               revs->notes_opt.suppress_default_notes = 1;
        } else if (!strcmp(arg, "--oneline")) {
                revs->verbose_header = 1;
                get_commit_format("oneline", revs);
@@ -1311,9 +1462,9 @@ static void append_prune_data(const char ***prune_data, const char **av)
  * Returns the number of arguments left that weren't recognized
  * (which are also moved to the head of the argument list)
  */
-int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
+int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt)
 {
-       int i, flags, left, seen_dashdash, read_from_stdin;
+       int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0;
        const char **prune_data = NULL;
 
        /* First, search for "--" */
@@ -1361,6 +1512,30 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                handle_refs(revs, flags, for_each_remote_ref);
                                continue;
                        }
+                       if (!prefixcmp(arg, "--glob=")) {
+                               struct all_refs_cb cb;
+                               init_all_refs_cb(&cb, revs, flags);
+                               for_each_glob_ref(handle_one_ref, arg + 7, &cb);
+                               continue;
+                       }
+                       if (!prefixcmp(arg, "--branches=")) {
+                               struct all_refs_cb cb;
+                               init_all_refs_cb(&cb, revs, flags);
+                               for_each_glob_ref_in(handle_one_ref, arg + 11, "refs/heads/", &cb);
+                               continue;
+                       }
+                       if (!prefixcmp(arg, "--tags=")) {
+                               struct all_refs_cb cb;
+                               init_all_refs_cb(&cb, revs, flags);
+                               for_each_glob_ref_in(handle_one_ref, arg + 7, "refs/tags/", &cb);
+                               continue;
+                       }
+                       if (!prefixcmp(arg, "--remotes=")) {
+                               struct all_refs_cb cb;
+                               init_all_refs_cb(&cb, revs, flags);
+                               for_each_glob_ref_in(handle_one_ref, arg + 10, "refs/remotes/", &cb);
+                               continue;
+                       }
                        if (!strcmp(arg, "--reflog")) {
                                handle_reflog(revs, flags);
                                continue;
@@ -1415,16 +1590,20 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        append_prune_data(&prune_data, argv + i);
                        break;
                }
+               else
+                       got_rev_arg = 1;
        }
 
        if (prune_data)
                revs->prune_data = get_pathspec(revs->prefix, prune_data);
 
        if (revs->def == NULL)
-               revs->def = def;
+               revs->def = opt ? opt->def : NULL;
+       if (opt && opt->tweak)
+               opt->tweak(revs, opt);
        if (revs->show_merge)
                prepare_show_merge(revs);
-       if (revs->def && !revs->pending.nr) {
+       if (revs->def && !revs->pending.nr && !got_rev_arg) {
                unsigned char sha1[20];
                struct object *object;
                unsigned mode;
@@ -1455,11 +1634,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                if (!revs->full_diff)
                        diff_tree_setup_paths(revs->prune_data, &revs->diffopt);
        }
-       if (revs->combine_merges) {
+       if (revs->combine_merges)
                revs->ignore_merges = 0;
-               if (revs->dense_combined_merges && !revs->diffopt.output_format)
-                       revs->diffopt.output_format = DIFF_FORMAT_PATCH;
-       }
        revs->diffopt.abbrev = revs->abbrev;
        if (diff_setup_done(&revs->diffopt) < 0)
                die("diff_setup_done failed");
@@ -1714,7 +1890,7 @@ int prepare_revision_walk(struct rev_info *revs)
 enum rewrite_result {
        rewrite_one_ok,
        rewrite_one_noparents,
-       rewrite_one_error,
+       rewrite_one_error
 };
 
 static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp)
@@ -1760,7 +1936,7 @@ static int rewrite_parents(struct rev_info *revs, struct commit *commit)
 
 static int commit_match(struct commit *commit, struct rev_info *opt)
 {
-       if (!opt->grep_filter.pattern_list)
+       if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list)
                return 1;
        return grep_buffer(&opt->grep_filter,
                           NULL, /* we say nothing, not even filename */