Merge branch 'js/gitweb-raw-blob-link-in-history' into next
[gitweb.git] / merge-recursive.c
index aa92e30f639027b5e4a661d3691493be5713f631..1494ffdb828106882053065e3ac8cc383136cf80 100644 (file)
@@ -4,6 +4,7 @@
  * The thieves were Alex Riesen and Johannes Schindelin, in June/July 2006
  */
 #include "cache.h"
+#include "config.h"
 #include "advice.h"
 #include "lockfile.h"
 #include "cache-tree.h"
@@ -67,7 +68,7 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two,
        }
        if (!oidcmp(&two->object.oid, &shifted))
                return two;
-       return lookup_tree(shifted.hash);
+       return lookup_tree(&shifted);
 }
 
 static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
@@ -235,6 +236,8 @@ static int add_cacheinfo(struct merge_options *o,
                struct cache_entry *nce;
 
                nce = refresh_cache_entry(ce, CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING);
+               if (!nce)
+                       return err(o, _("addinfo_cache failed for path '%s'"), path);
                if (nce != ce)
                        ret = add_cache_entry(nce, options);
        }
@@ -302,7 +305,7 @@ struct tree *write_tree_from_memory(struct merge_options *o)
                return NULL;
        }
 
-       result = lookup_tree(active_cache_tree->sha1);
+       result = lookup_tree(&active_cache_tree->oid);
 
        return result;
 }
@@ -382,18 +385,16 @@ static struct string_list *get_unmerged(void)
                }
                e = item->util;
                e->stages[ce_stage(ce)].mode = ce->ce_mode;
-               hashcpy(e->stages[ce_stage(ce)].oid.hash, ce->sha1);
+               oidcpy(&e->stages[ce_stage(ce)].oid, &ce->oid);
        }
 
        return unmerged;
 }
 
-static int string_list_df_name_compare(const void *a, const void *b)
+static int string_list_df_name_compare(const char *one, const char *two)
 {
-       const struct string_list_item *one = a;
-       const struct string_list_item *two = b;
-       int onelen = strlen(one->string);
-       int twolen = strlen(two->string);
+       int onelen = strlen(one);
+       int twolen = strlen(two);
        /*
         * Here we only care that entries for D/F conflicts are
         * adjacent, in particular with the file of the D/F conflict
@@ -406,8 +407,8 @@ static int string_list_df_name_compare(const void *a, const void *b)
         * since in other cases any changes in their order due to
         * sorting cause no problems for us.
         */
-       int cmp = df_name_compare(one->string, onelen, S_IFDIR,
-                                 two->string, twolen, S_IFDIR);
+       int cmp = df_name_compare(one, onelen, S_IFDIR,
+                                 two, twolen, S_IFDIR);
        /*
         * Now that 'foo' and 'foo/bar' compare equal, we have to make sure
         * that 'foo' comes before 'foo/bar'.
@@ -451,8 +452,8 @@ static void record_df_conflict_files(struct merge_options *o,
                string_list_append(&df_sorted_entries, next->string)->util =
                                   next->util;
        }
-       qsort(df_sorted_entries.items, entries->nr, sizeof(*entries->items),
-             string_list_df_name_compare);
+       df_sorted_entries.cmp = string_list_df_name_compare;
+       string_list_sort(&df_sorted_entries);
 
        string_list_clear(&o->df_conflict_file_set, 1);
        for (i = 0; i < df_sorted_entries.nr; i++) {
@@ -528,7 +529,7 @@ static struct string_list *get_renames(struct merge_options *o,
        opts.show_rename_progress = o->show_rename_progress;
        opts.output_format = DIFF_FORMAT_NO_OUTPUT;
        diff_setup_done(&opts);
-       diff_tree_sha1(o_tree->object.oid.hash, tree->object.oid.hash, "", &opts);
+       diff_tree_oid(&o_tree->object.oid, &tree->object.oid, "", &opts);
        diffcore_std(&opts);
        if (opts.needed_rename_limit > o->needed_rename_limit)
                o->needed_rename_limit = opts.needed_rename_limit;
@@ -664,7 +665,13 @@ static char *unique_path(struct merge_options *o, const char *path, const char *
        return strbuf_detach(&newpath, NULL);
 }
 
-static int dir_in_way(const char *path, int check_working_copy)
+/**
+ * Check whether a directory in the index is in the way of an incoming
+ * file.  Return 1 if so.  If check_working_copy is non-zero, also
+ * check the working directory.  If empty_ok is non-zero, also return
+ * 0 in the case where the working-tree dir exists but is empty.
+ */
+static int dir_in_way(const char *path, int check_working_copy, int empty_ok)
 {
        int pos;
        struct strbuf dirpath = STRBUF_INIT;
@@ -684,7 +691,8 @@ static int dir_in_way(const char *path, int check_working_copy)
        }
 
        strbuf_release(&dirpath);
-       return check_working_copy && !lstat(path, &st) && S_ISDIR(st.st_mode);
+       return check_working_copy && !lstat(path, &st) && S_ISDIR(st.st_mode) &&
+               !(empty_ok && is_empty_dir(path));
 }
 
 static int was_tracked(const char *path)
@@ -910,9 +918,9 @@ static int merge_3way(struct merge_options *o,
                name2 = mkpathdup("%s", branch2);
        }
 
-       read_mmblob(&orig, one->oid.hash);
-       read_mmblob(&src1, a->oid.hash);
-       read_mmblob(&src2, b->oid.hash);
+       read_mmblob(&orig, &one->oid);
+       read_mmblob(&src1, &a->oid);
+       read_mmblob(&src2, &b->oid);
 
        merge_status = ll_merge(result_buf, a->path, &orig, base_name,
                                &src1, name1, &src2, name2, &ll_opts);
@@ -987,11 +995,11 @@ static int merge_file_1(struct merge_options *o,
                                return ret;
                        result->clean = (merge_status == 0);
                } else if (S_ISGITLINK(a->mode)) {
-                       result->clean = merge_submodule(result->oid.hash,
+                       result->clean = merge_submodule(&result->oid,
                                                       one->path,
-                                                      one->oid.hash,
-                                                      a->oid.hash,
-                                                      b->oid.hash,
+                                                      &one->oid,
+                                                      &a->oid,
+                                                      &b->oid,
                                                       !o->call_depth);
                } else if (S_ISLNK(a->mode)) {
                        oidcpy(&result->oid, &a->oid);
@@ -1054,16 +1062,20 @@ static int merge_file_one(struct merge_options *o,
 }
 
 static int handle_change_delete(struct merge_options *o,
-                                const char *path,
+                                const char *path, const char *old_path,
                                 const struct object_id *o_oid, int o_mode,
-                                const struct object_id *a_oid, int a_mode,
-                                const struct object_id *b_oid, int b_mode,
+                                const struct object_id *changed_oid,
+                                int changed_mode,
+                                const char *change_branch,
+                                const char *delete_branch,
                                 const char *change, const char *change_past)
 {
-       char *renamed = NULL;
+       char *alt_path = NULL;
+       const char *update_path = path;
        int ret = 0;
-       if (dir_in_way(path, !o->call_depth)) {
-               renamed = unique_path(o, path, a_oid ? o->branch1 : o->branch2);
+
+       if (dir_in_way(path, !o->call_depth, 0)) {
+               update_path = alt_path = unique_path(o, path, change_branch);
        }
 
        if (o->call_depth) {
@@ -1074,43 +1086,43 @@ static int handle_change_delete(struct merge_options *o,
                 */
                ret = remove_file_from_cache(path);
                if (!ret)
-                       ret = update_file(o, 0, o_oid, o_mode,
-                                         renamed ? renamed : path);
-       } else if (!a_oid) {
-               if (!renamed) {
-                       output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
-                              "and %s in %s. Version %s of %s left in tree."),
-                              change, path, o->branch1, change_past,
-                              o->branch2, o->branch2, path);
-                       ret = update_file(o, 0, b_oid, b_mode, path);
-               } else {
-                       output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
-                              "and %s in %s. Version %s of %s left in tree at %s."),
-                              change, path, o->branch1, change_past,
-                              o->branch2, o->branch2, path, renamed);
-                       ret = update_file(o, 0, b_oid, b_mode, renamed);
-               }
+                       ret = update_file(o, 0, o_oid, o_mode, update_path);
        } else {
-               if (!renamed) {
-                       output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
-                              "and %s in %s. Version %s of %s left in tree."),
-                              change, path, o->branch2, change_past,
-                              o->branch1, o->branch1, path);
+               if (!alt_path) {
+                       if (!old_path) {
+                               output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
+                                      "and %s in %s. Version %s of %s left in tree."),
+                                      change, path, delete_branch, change_past,
+                                      change_branch, change_branch, path);
+                       } else {
+                               output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
+                                      "and %s to %s in %s. Version %s of %s left in tree."),
+                                      change, old_path, delete_branch, change_past, path,
+                                      change_branch, change_branch, path);
+                       }
                } else {
-                       output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
-                              "and %s in %s. Version %s of %s left in tree at %s."),
-                              change, path, o->branch2, change_past,
-                              o->branch1, o->branch1, path, renamed);
-                       ret = update_file(o, 0, a_oid, a_mode, renamed);
+                       if (!old_path) {
+                               output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
+                                      "and %s in %s. Version %s of %s left in tree at %s."),
+                                      change, path, delete_branch, change_past,
+                                      change_branch, change_branch, path, alt_path);
+                       } else {
+                               output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
+                                      "and %s to %s in %s. Version %s of %s left in tree at %s."),
+                                      change, old_path, delete_branch, change_past, path,
+                                      change_branch, change_branch, path, alt_path);
+                       }
                }
                /*
-                * No need to call update_file() on path when !renamed, since
-                * that would needlessly touch path.  We could call
-                * update_file_flags() with update_cache=0 and update_wd=0,
-                * but that's a no-op.
+                * No need to call update_file() on path when change_branch ==
+                * o->branch1 && !alt_path, since that would needlessly touch
+                * path.  We could call update_file_flags() with update_cache=0
+                * and update_wd=0, but that's a no-op.
                 */
+               if (change_branch != o->branch1 || alt_path)
+                       ret = update_file(o, 0, changed_oid, changed_mode, update_path);
        }
-       free(renamed);
+       free(alt_path);
 
        return ret;
 }
@@ -1118,28 +1130,17 @@ static int handle_change_delete(struct merge_options *o,
 static int conflict_rename_delete(struct merge_options *o,
                                   struct diff_filepair *pair,
                                   const char *rename_branch,
-                                  const char *other_branch)
+                                  const char *delete_branch)
 {
        const struct diff_filespec *orig = pair->one;
        const struct diff_filespec *dest = pair->two;
-       const struct object_id *a_oid = NULL;
-       const struct object_id *b_oid = NULL;
-       int a_mode = 0;
-       int b_mode = 0;
-
-       if (rename_branch == o->branch1) {
-               a_oid = &dest->oid;
-               a_mode = dest->mode;
-       } else {
-               b_oid = &dest->oid;
-               b_mode = dest->mode;
-       }
 
        if (handle_change_delete(o,
                                 o->call_depth ? orig->path : dest->path,
+                                o->call_depth ? NULL : orig->path,
                                 &orig->oid, orig->mode,
-                                a_oid, a_mode,
-                                b_oid, b_mode,
+                                &dest->oid, dest->mode,
+                                rename_branch, delete_branch,
                                 _("rename"), _("renamed")))
                return -1;
 
@@ -1195,7 +1196,7 @@ static int handle_file(struct merge_options *o,
                remove_file(o, 0, rename->path, 0);
                dst_name = unique_path(o, rename->path, cur_branch);
        } else {
-               if (dir_in_way(rename->path, !o->call_depth)) {
+               if (dir_in_way(rename->path, !o->call_depth, 0)) {
                        dst_name = unique_path(o, rename->path, cur_branch);
                        output(o, 1, _("%s is a directory in %s adding as %s instead"),
                               rename->path, other_branch, dst_name);
@@ -1383,14 +1384,11 @@ static int process_renames(struct merge_options *o,
                        branch1 = o->branch1;
                        branch2 = o->branch2;
                } else {
-                       struct rename *tmp;
                        renames1 = b_renames;
                        renames2Dst = &a_by_dst;
                        branch1 = o->branch2;
                        branch2 = o->branch1;
-                       tmp = ren2;
-                       ren2 = ren1;
-                       ren1 = tmp;
+                       SWAP(ren2, ren1);
                }
 
                if (ren1->processed)
@@ -1642,8 +1640,8 @@ static int blob_unchanged(struct merge_options *opt,
         * performed.  Comparison can be skipped if both files are
         * unchanged since their sha1s have already been compared.
         */
-       if (renormalize_buffer(path, o.buf, o.len, &o) |
-           renormalize_buffer(path, a.buf, a.len, &a))
+       if (renormalize_buffer(&the_index, path, o.buf, o.len, &o) |
+           renormalize_buffer(&the_index, path, a.buf, a.len, &a))
                ret = (o.len == a.len && !memcmp(o.buf, a.buf, o.len));
 
 error_return:
@@ -1658,11 +1656,27 @@ static int handle_modify_delete(struct merge_options *o,
                                 struct object_id *a_oid, int a_mode,
                                 struct object_id *b_oid, int b_mode)
 {
+       const char *modify_branch, *delete_branch;
+       struct object_id *changed_oid;
+       int changed_mode;
+
+       if (a_oid) {
+               modify_branch = o->branch1;
+               delete_branch = o->branch2;
+               changed_oid = a_oid;
+               changed_mode = a_mode;
+       } else {
+               modify_branch = o->branch2;
+               delete_branch = o->branch1;
+               changed_oid = b_oid;
+               changed_mode = b_mode;
+       }
+
        return handle_change_delete(o,
-                                   path,
+                                   path, NULL,
                                    o_oid, o_mode,
-                                   a_oid, a_mode,
-                                   b_oid, b_mode,
+                                   changed_oid, changed_mode,
+                                   modify_branch, delete_branch,
                                    _("modify"), _("modified"));
 }
 
@@ -1704,7 +1718,8 @@ static int merge_content(struct merge_options *o,
                         o->branch2 == rename_conflict_info->branch1) ?
                        pair1->two->path : pair1->one->path;
 
-               if (dir_in_way(path, !o->call_depth))
+               if (dir_in_way(path, !o->call_depth,
+                              S_ISGITLINK(pair1->two->mode)))
                        df_conflict_remains = 1;
        }
        if (merge_file_special_markers(o, &one, &a, &b,
@@ -1862,7 +1877,8 @@ static int process_entry(struct merge_options *o,
                        oid = b_oid;
                        conf = _("directory/file");
                }
-               if (dir_in_way(path, !o->call_depth)) {
+               if (dir_in_way(path, !o->call_depth,
+                              S_ISGITLINK(a_mode))) {
                        char *new_path = unique_path(o, path, add_branch);
                        clean_merge = 0;
                        output(o, 1, _("CONFLICT (%s): There is a directory with name %s in %s. "
@@ -2027,7 +2043,7 @@ int merge_recursive(struct merge_options *o,
                /* if there is no common ancestor, use an empty tree */
                struct tree *tree;
 
-               tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
+               tree = lookup_tree(&empty_tree_oid);
                merged_common_ancestors = make_virtual_commit(tree, "ancestor");
        }
 
@@ -2088,7 +2104,7 @@ static struct commit *get_ref(const struct object_id *oid, const char *name)
 {
        struct object *object;
 
-       object = deref_tag(parse_object(oid->hash), name, strlen(name));
+       object = deref_tag(parse_object(oid), name, strlen(name));
        if (!object)
                return NULL;
        if (object->type == OBJ_TREE)
@@ -2124,7 +2140,7 @@ int merge_recursive_generic(struct merge_options *o,
                }
        }
 
-       hold_locked_index(lock, 1);
+       hold_locked_index(lock, LOCK_DIE_ON_ERROR);
        clean = merge_recursive(o, head_commit, next_commit, ca,
                        result);
        if (clean < 0)
@@ -2194,11 +2210,11 @@ int parse_merge_opt(struct merge_options *o, const char *s)
                o->xdl_opts |= value;
        }
        else if (!strcmp(s, "ignore-space-change"))
-               o->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
+               DIFF_XDL_SET(o, IGNORE_WHITESPACE_CHANGE);
        else if (!strcmp(s, "ignore-all-space"))
-               o->xdl_opts |= XDF_IGNORE_WHITESPACE;
+               DIFF_XDL_SET(o, IGNORE_WHITESPACE);
        else if (!strcmp(s, "ignore-space-at-eol"))
-               o->xdl_opts |= XDF_IGNORE_WHITESPACE_AT_EOL;
+               DIFF_XDL_SET(o, IGNORE_WHITESPACE_AT_EOL);
        else if (!strcmp(s, "renormalize"))
                o->renormalize = 1;
        else if (!strcmp(s, "no-renormalize"))