Imported Upstream version 2.20.0
[platform/upstream/git.git] / list-objects.c
index 41736d2..c41cc80 100644 (file)
@@ -7,24 +7,62 @@
 #include "tree-walk.h"
 #include "revision.h"
 #include "list-objects.h"
+#include "list-objects-filter.h"
+#include "list-objects-filter-options.h"
+#include "packfile.h"
+#include "object-store.h"
+#include "trace.h"
 
-static void process_blob(struct rev_info *revs,
+struct traversal_context {
+       struct rev_info *revs;
+       show_object_fn show_object;
+       show_commit_fn show_commit;
+       void *show_data;
+       filter_object_fn filter_fn;
+       void *filter_data;
+};
+
+static void process_blob(struct traversal_context *ctx,
                         struct blob *blob,
-                        show_object_fn show,
-                        struct name_path *path,
-                        const char *name,
-                        void *cb_data)
+                        struct strbuf *path,
+                        const char *name)
 {
        struct object *obj = &blob->object;
+       size_t pathlen;
+       enum list_objects_filter_result r = LOFR_MARK_SEEN | LOFR_DO_SHOW;
 
-       if (!revs->blob_objects)
+       if (!ctx->revs->blob_objects)
                return;
        if (!obj)
                die("bad blob object");
        if (obj->flags & (UNINTERESTING | SEEN))
                return;
-       obj->flags |= SEEN;
-       show(obj, path, name, cb_data);
+
+       /*
+        * Pre-filter known-missing objects when explicitly requested.
+        * Otherwise, a missing object error message may be reported
+        * later (depending on other filtering criteria).
+        *
+        * Note that this "--exclude-promisor-objects" pre-filtering
+        * may cause the actual filter to report an incomplete list
+        * of missing objects.
+        */
+       if (ctx->revs->exclude_promisor_objects &&
+           !has_object_file(&obj->oid) &&
+           is_promisor_object(&obj->oid))
+               return;
+
+       pathlen = path->len;
+       strbuf_addstr(path, name);
+       if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn)
+               r = ctx->filter_fn(LOFS_BLOB, obj,
+                                  path->buf, &path->buf[pathlen],
+                                  ctx->filter_data);
+       if (r & LOFR_MARK_SEEN)
+               obj->flags |= SEEN;
+       if (r & LOFR_DO_SHOW)
+               ctx->show_object(obj, path->buf, ctx->show_data);
+       strbuf_setlen(path, pathlen);
 }
 
 /*
@@ -49,31 +87,66 @@ static void process_blob(struct rev_info *revs,
  * the link, and how to do it. Whether it necessarily makes
  * any sense what-so-ever to ever do that is another issue.
  */
-static void process_gitlink(struct rev_info *revs,
+static void process_gitlink(struct traversal_context *ctx,
                            const unsigned char *sha1,
-                           show_object_fn show,
-                           struct name_path *path,
-                           const char *name,
-                           void *cb_data)
+                           struct strbuf *path,
+                           const char *name)
 {
        /* Nothing to do */
 }
 
-static void process_tree(struct rev_info *revs,
+static void process_tree(struct traversal_context *ctx,
                         struct tree *tree,
-                        show_object_fn show,
-                        struct name_path *path,
                         struct strbuf *base,
-                        const char *name,
-                        void *cb_data)
+                        const char *name);
+
+static void process_tree_contents(struct traversal_context *ctx,
+                                 struct tree *tree,
+                                 struct strbuf *base)
 {
-       struct object *obj = &tree->object;
        struct tree_desc desc;
        struct name_entry entry;
-       struct name_path me;
-       enum interesting match = revs->diffopt.pathspec.nr == 0 ?
-               all_entries_interesting: entry_not_interesting;
+       enum interesting match = ctx->revs->diffopt.pathspec.nr == 0 ?
+               all_entries_interesting : entry_not_interesting;
+
+       init_tree_desc(&desc, tree->buffer, tree->size);
+
+       while (tree_entry(&desc, &entry)) {
+               if (match != all_entries_interesting) {
+                       match = tree_entry_interesting(&entry, base, 0,
+                                                      &ctx->revs->diffopt.pathspec);
+                       if (match == all_entries_not_interesting)
+                               break;
+                       if (match == entry_not_interesting)
+                               continue;
+               }
+
+               if (S_ISDIR(entry.mode)) {
+                       struct tree *t = lookup_tree(the_repository, entry.oid);
+                       t->object.flags |= NOT_USER_GIVEN;
+                       process_tree(ctx, t, base, entry.path);
+               }
+               else if (S_ISGITLINK(entry.mode))
+                       process_gitlink(ctx, entry.oid->hash,
+                                       base, entry.path);
+               else {
+                       struct blob *b = lookup_blob(the_repository, entry.oid);
+                       b->object.flags |= NOT_USER_GIVEN;
+                       process_blob(ctx, b, base, entry.path);
+               }
+       }
+}
+
+static void process_tree(struct traversal_context *ctx,
+                        struct tree *tree,
+                        struct strbuf *base,
+                        const char *name)
+{
+       struct object *obj = &tree->object;
+       struct rev_info *revs = ctx->revs;
        int baselen = base->len;
+       enum list_objects_filter_result r = LOFR_MARK_SEEN | LOFR_DO_SHOW;
+       int failed_parse;
 
        if (!revs->tree_objects)
                return;
@@ -81,50 +154,52 @@ static void process_tree(struct rev_info *revs,
                die("bad tree object");
        if (obj->flags & (UNINTERESTING | SEEN))
                return;
-       if (parse_tree_gently(tree, revs->ignore_missing_links) < 0) {
+
+       failed_parse = parse_tree_gently(tree, 1);
+       if (failed_parse) {
                if (revs->ignore_missing_links)
                        return;
-               die("bad tree object %s", sha1_to_hex(obj->sha1));
-       }
-       obj->flags |= SEEN;
-       show(obj, path, name, cb_data);
-       me.up = path;
-       me.elem = name;
-       me.elem_len = strlen(name);
-
-       if (!match) {
-               strbuf_addstr(base, name);
-               if (base->len)
-                       strbuf_addch(base, '/');
+
+               /*
+                * Pre-filter known-missing tree objects when explicitly
+                * requested.  This may cause the actual filter to report
+                * an incomplete list of missing objects.
+                */
+               if (revs->exclude_promisor_objects &&
+                   is_promisor_object(&obj->oid))
+                       return;
+
+               if (!revs->do_not_die_on_missing_tree)
+                       die("bad tree object %s", oid_to_hex(&obj->oid));
        }
 
-       init_tree_desc(&desc, tree->buffer, tree->size);
+       strbuf_addstr(base, name);
+       if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn)
+               r = ctx->filter_fn(LOFS_BEGIN_TREE, obj,
+                                  base->buf, &base->buf[baselen],
+                                  ctx->filter_data);
+       if (r & LOFR_MARK_SEEN)
+               obj->flags |= SEEN;
+       if (r & LOFR_DO_SHOW)
+               ctx->show_object(obj, base->buf, ctx->show_data);
+       if (base->len)
+               strbuf_addch(base, '/');
 
-       while (tree_entry(&desc, &entry)) {
-               if (match != all_entries_interesting) {
-                       match = tree_entry_interesting(&entry, base, 0,
-                                                      &revs->diffopt.pathspec);
-                       if (match == all_entries_not_interesting)
-                               break;
-                       if (match == entry_not_interesting)
-                               continue;
-               }
+       if (r & LOFR_SKIP_TREE)
+               trace_printf("Skipping contents of tree %s...\n", base->buf);
+       else if (!failed_parse)
+               process_tree_contents(ctx, tree, base);
 
-               if (S_ISDIR(entry.mode))
-                       process_tree(revs,
-                                    lookup_tree(entry.sha1),
-                                    show, &me, base, entry.path,
-                                    cb_data);
-               else if (S_ISGITLINK(entry.mode))
-                       process_gitlink(revs, entry.sha1,
-                                       show, &me, entry.path,
-                                       cb_data);
-               else
-                       process_blob(revs,
-                                    lookup_blob(entry.sha1),
-                                    show, &me, entry.path,
-                                    cb_data);
+       if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn) {
+               r = ctx->filter_fn(LOFS_END_TREE, obj,
+                                  base->buf, &base->buf[baselen],
+                                  ctx->filter_data);
+               if (r & LOFR_MARK_SEEN)
+                       obj->flags |= SEEN;
+               if (r & LOFR_DO_SHOW)
+                       ctx->show_object(obj, base->buf, ctx->show_data);
        }
+
        strbuf_setlen(base, baselen);
        free_tree_buffer(tree);
 }
@@ -139,7 +214,7 @@ static void mark_edge_parents_uninteresting(struct commit *commit,
                struct commit *parent = parents->item;
                if (!(parent->object.flags & UNINTERESTING))
                        continue;
-               mark_tree_uninteresting(parent->tree);
+               mark_tree_uninteresting(revs->repo, get_commit_tree(parent));
                if (revs->edge_hint && !(parent->object.flags & SHOWN)) {
                        parent->object.flags |= SHOWN;
                        show_edge(parent);
@@ -156,7 +231,8 @@ void mark_edges_uninteresting(struct rev_info *revs, show_edge_fn show_edge)
                struct commit *commit = list->item;
 
                if (commit->object.flags & UNINTERESTING) {
-                       mark_tree_uninteresting(commit->tree);
+                       mark_tree_uninteresting(revs->repo,
+                                               get_commit_tree(commit));
                        if (revs->edge_hint_aggressive && !(commit->object.flags & SHOWN)) {
                                commit->object.flags |= SHOWN;
                                show_edge(commit);
@@ -171,7 +247,8 @@ void mark_edges_uninteresting(struct rev_info *revs, show_edge_fn show_edge)
                        struct commit *commit = (struct commit *)obj;
                        if (obj->type != OBJ_COMMIT || !(obj->flags & UNINTERESTING))
                                continue;
-                       mark_tree_uninteresting(commit->tree);
+                       mark_tree_uninteresting(revs->repo,
+                                               get_commit_tree(commit));
                        if (!(obj->flags & SHOWN)) {
                                obj->flags |= SHOWN;
                                show_edge(commit);
@@ -185,27 +262,15 @@ static void add_pending_tree(struct rev_info *revs, struct tree *tree)
        add_pending_object(revs, &tree->object, "");
 }
 
-void traverse_commit_list(struct rev_info *revs,
-                         show_commit_fn show_commit,
-                         show_object_fn show_object,
-                         void *data)
+static void traverse_trees_and_blobs(struct traversal_context *ctx,
+                                    struct strbuf *base)
 {
        int i;
-       struct commit *commit;
-       struct strbuf base;
 
-       strbuf_init(&base, PATH_MAX);
-       while ((commit = get_revision(revs)) != NULL) {
-               /*
-                * an uninteresting boundary commit may not have its tree
-                * parsed yet, but we are not going to show them anyway
-                */
-               if (commit->tree)
-                       add_pending_tree(revs, commit->tree);
-               show_commit(commit, data);
-       }
-       for (i = 0; i < revs->pending.nr; i++) {
-               struct object_array_entry *pending = revs->pending.objects + i;
+       assert(base->len == 0);
+
+       for (i = 0; i < ctx->revs->pending.nr; i++) {
+               struct object_array_entry *pending = ctx->revs->pending.objects + i;
                struct object *obj = pending->item;
                const char *name = pending->name;
                const char *path = pending->path;
@@ -213,24 +278,90 @@ void traverse_commit_list(struct rev_info *revs,
                        continue;
                if (obj->type == OBJ_TAG) {
                        obj->flags |= SEEN;
-                       show_object(obj, NULL, name, data);
+                       ctx->show_object(obj, name, ctx->show_data);
                        continue;
                }
                if (!path)
                        path = "";
                if (obj->type == OBJ_TREE) {
-                       process_tree(revs, (struct tree *)obj, show_object,
-                                    NULL, &base, path, data);
+                       process_tree(ctx, (struct tree *)obj, base, path);
                        continue;
                }
                if (obj->type == OBJ_BLOB) {
-                       process_blob(revs, (struct blob *)obj, show_object,
-                                    NULL, path, data);
+                       process_blob(ctx, (struct blob *)obj, base, path);
                        continue;
                }
                die("unknown pending object %s (%s)",
-                   sha1_to_hex(obj->sha1), name);
+                   oid_to_hex(&obj->oid), name);
+       }
+       object_array_clear(&ctx->revs->pending);
+}
+
+static void do_traverse(struct traversal_context *ctx)
+{
+       struct commit *commit;
+       struct strbuf csp; /* callee's scratch pad */
+       strbuf_init(&csp, PATH_MAX);
+
+       while ((commit = get_revision(ctx->revs)) != NULL) {
+               /*
+                * an uninteresting boundary commit may not have its tree
+                * parsed yet, but we are not going to show them anyway
+                */
+               if (get_commit_tree(commit)) {
+                       struct tree *tree = get_commit_tree(commit);
+                       tree->object.flags |= NOT_USER_GIVEN;
+                       add_pending_tree(ctx->revs, tree);
+               }
+               ctx->show_commit(commit, ctx->show_data);
+
+               if (ctx->revs->tree_blobs_in_commit_order)
+                       /*
+                        * NEEDSWORK: Adding the tree and then flushing it here
+                        * needs a reallocation for each commit. Can we pass the
+                        * tree directory without allocation churn?
+                        */
+                       traverse_trees_and_blobs(ctx, &csp);
        }
-       object_array_clear(&revs->pending);
-       strbuf_release(&base);
+       traverse_trees_and_blobs(ctx, &csp);
+       strbuf_release(&csp);
+}
+
+void traverse_commit_list(struct rev_info *revs,
+                         show_commit_fn show_commit,
+                         show_object_fn show_object,
+                         void *show_data)
+{
+       struct traversal_context ctx;
+       ctx.revs = revs;
+       ctx.show_commit = show_commit;
+       ctx.show_object = show_object;
+       ctx.show_data = show_data;
+       ctx.filter_fn = NULL;
+       ctx.filter_data = NULL;
+       do_traverse(&ctx);
+}
+
+void traverse_commit_list_filtered(
+       struct list_objects_filter_options *filter_options,
+       struct rev_info *revs,
+       show_commit_fn show_commit,
+       show_object_fn show_object,
+       void *show_data,
+       struct oidset *omitted)
+{
+       struct traversal_context ctx;
+       filter_free_fn filter_free_fn = NULL;
+
+       ctx.revs = revs;
+       ctx.show_object = show_object;
+       ctx.show_commit = show_commit;
+       ctx.show_data = show_data;
+       ctx.filter_fn = NULL;
+
+       ctx.filter_data = list_objects_filter__init(omitted, filter_options,
+                                                   &ctx.filter_fn, &filter_free_fn);
+       do_traverse(&ctx);
+       if (ctx.filter_data && filter_free_fn)
+               filter_free_fn(ctx.filter_data);
 }