From: Fredrik Kuivinen Date: Fri, 10 Mar 2006 09:21:39 +0000 (+0100) Subject: rev-lib: Make it easy to do rename tracking (take 2) X-Git-Tag: v1.3.0-rc1~39^2~1 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=8efdc326c9681e814d79e8da6097c187388dc0c4;p=git.git rev-lib: Make it easy to do rename tracking (take 2) prune_fn in the rev_info structure is called in place of try_to_simplify_commit. This makes it possible to do rename tracking with a custom try_to_simplify_commit-like function. This commit also introduces init_revisions which initialises the rev_info structure with default values. Signed-off-by: Fredrik Kuivinen Signed-off-by: Junio C Hamano --- diff --git a/rev-list.c b/rev-list.c index 8e4d83efb..812d237f4 100644 --- a/rev-list.c +++ b/rev-list.c @@ -190,7 +190,7 @@ static int count_distance(struct commit_list *entry) if (commit->object.flags & (UNINTERESTING | COUNTED)) break; - if (!revs.paths || (commit->object.flags & TREECHANGE)) + if (!revs.prune_fn || (commit->object.flags & TREECHANGE)) nr++; commit->object.flags |= COUNTED; p = commit->parents; @@ -224,7 +224,7 @@ static struct commit_list *find_bisection(struct commit_list *list) nr = 0; p = list; while (p) { - if (!revs.paths || (p->item->object.flags & TREECHANGE)) + if (!revs.prune_fn || (p->item->object.flags & TREECHANGE)) nr++; p = p->next; } @@ -234,7 +234,7 @@ static struct commit_list *find_bisection(struct commit_list *list) for (p = list; p; p = p->next) { int distance; - if (revs.paths && !(p->item->object.flags & TREECHANGE)) + if (revs.prune_fn && !(p->item->object.flags & TREECHANGE)) continue; distance = count_distance(p); diff --git a/revision.c b/revision.c index c8d93ff10..01386ed6d 100644 --- a/revision.c +++ b/revision.c @@ -199,31 +199,27 @@ static int everybody_uninteresting(struct commit_list *orig) return 1; } -#define TREE_SAME 0 -#define TREE_NEW 1 -#define TREE_DIFFERENT 2 -static int tree_difference = TREE_SAME; +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 *base, const char *path) { - int diff = TREE_DIFFERENT; + int diff = REV_TREE_DIFFERENT; /* - * Is it an add of a new file? It means that - * the old tree didn't have it at all, so we - * will turn "TREE_SAME" -> "TREE_NEW", but - * leave any "TREE_DIFFERENT" alone (and if - * it already was "TREE_NEW", we'll keep it - * "TREE_NEW" of course). + * Is it an add of a new file? It means that the old tree + * didn't have it at all, so we will turn "REV_TREE_SAME" -> + * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone + * (and if it already was "REV_TREE_NEW", we'll keep it + * "REV_TREE_NEW" of course). */ if (addremove == '+') { diff = tree_difference; - if (diff != TREE_SAME) + if (diff != REV_TREE_SAME) return; - diff = TREE_NEW; + diff = REV_TREE_NEW; } tree_difference = diff; } @@ -234,7 +230,7 @@ static void file_change(struct diff_options *options, const unsigned char *new_sha1, const char *base, const char *path) { - tree_difference = TREE_DIFFERENT; + tree_difference = REV_TREE_DIFFERENT; } static struct diff_options diff_opt = { @@ -243,19 +239,19 @@ static struct diff_options diff_opt = { .change = file_change, }; -static int compare_tree(struct tree *t1, struct tree *t2) +int rev_compare_tree(struct tree *t1, struct tree *t2) { if (!t1) - return TREE_NEW; + return REV_TREE_NEW; if (!t2) - return TREE_DIFFERENT; - tree_difference = TREE_SAME; + return REV_TREE_DIFFERENT; + tree_difference = REV_TREE_SAME; if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", &diff_opt) < 0) - return TREE_DIFFERENT; + return REV_TREE_DIFFERENT; return tree_difference; } -static int same_tree_as_empty(struct tree *t1) +int rev_same_tree_as_empty(struct tree *t1) { int retval; void *tree; @@ -288,7 +284,7 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) return; if (!commit->parents) { - if (!same_tree_as_empty(commit->tree)) + if (!rev_same_tree_as_empty(commit->tree)) commit->object.flags |= TREECHANGE; return; } @@ -298,8 +294,8 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) struct commit *p = parent->item; parse_commit(p); - switch (compare_tree(p->tree, commit->tree)) { - case TREE_SAME: + switch (rev_compare_tree(p->tree, commit->tree)) { + case REV_TREE_SAME: if (p->object.flags & UNINTERESTING) { /* Even if a merge with an uninteresting * side branch brought the entire change @@ -314,13 +310,14 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) commit->parents = parent; return; - case TREE_NEW: - if (revs->remove_empty_trees && same_tree_as_empty(p->tree)) { + case REV_TREE_NEW: + if (revs->remove_empty_trees && + rev_same_tree_as_empty(p->tree)) { *pp = parent->next; continue; } /* fallthrough */ - case TREE_DIFFERENT: + case REV_TREE_DIFFERENT: tree_changed = 1; pp = &parent->next; continue; @@ -368,8 +365,8 @@ static void add_parents_to_list(struct rev_info *revs, struct commit *commit, st * simplify the commit history and find the parent * that has no differences in the path set if one exists. */ - if (revs->paths) - try_to_simplify_commit(revs, commit); + if (revs->prune_fn) + revs->prune_fn(revs, commit); parent = commit->parents; while (parent) { @@ -391,9 +388,6 @@ static void limit_list(struct rev_info *revs) struct commit_list *newlist = NULL; struct commit_list **p = &newlist; - if (revs->paths) - diff_tree_setup_paths(revs->paths); - while (list) { struct commit_list *entry = list; struct commit *commit = list->item; @@ -445,6 +439,23 @@ static void handle_all(struct rev_info *revs, unsigned flags) for_each_ref(handle_one_ref); } +void init_revisions(struct rev_info *revs) +{ + memset(revs, 0, sizeof(*revs)); + revs->lifo = 1; + revs->dense = 1; + revs->prefix = setup_git_directory(); + revs->max_age = -1; + revs->min_age = -1; + revs->max_count = -1; + + revs->prune_fn = NULL; + revs->prune_data = NULL; + + revs->topo_setter = topo_sort_default_setter; + revs->topo_getter = topo_sort_default_getter; +} + /* * Parse revision information, filling in the "rev_info" structure, * and removing the used arguments from the argument list. @@ -458,13 +469,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch const char **unrecognized = argv + 1; int left = 1; - memset(revs, 0, sizeof(*revs)); - revs->lifo = 1; - revs->dense = 1; - revs->prefix = setup_git_directory(); - revs->max_age = -1; - revs->min_age = -1; - revs->max_count = -1; + init_revisions(revs); /* First, search for "--" */ seen_dashdash = 0; @@ -474,7 +479,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch continue; argv[i] = NULL; argc = i; - revs->paths = get_pathspec(revs->prefix, argv + i + 1); + revs->prune_data = get_pathspec(revs->prefix, argv + i + 1); seen_dashdash = 1; break; } @@ -638,7 +643,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch if (lstat(argv[j], &st) < 0) die("'%s': %s", arg, strerror(errno)); } - revs->paths = get_pathspec(revs->prefix, argv + i); + revs->prune_data = get_pathspec(revs->prefix, argv + i); break; } commit = get_commit_reference(revs, arg, sha1, flags ^ local_flags); @@ -652,8 +657,13 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch commit = get_commit_reference(revs, def, sha1, 0); add_one_commit(commit, revs); } - if (revs->paths) + + if (revs->prune_data) { + diff_tree_setup_paths(revs->prune_data); + revs->prune_fn = try_to_simplify_commit; revs->limited = 1; + } + return left; } @@ -663,7 +673,9 @@ void prepare_revision_walk(struct rev_info *revs) if (revs->limited) limit_list(revs); if (revs->topo_order) - sort_in_topological_order(&revs->commits, revs->lifo); + sort_in_topological_order_fn(&revs->commits, revs->lifo, + revs->topo_setter, + revs->topo_getter); } static int rewrite_one(struct commit **pp) @@ -719,7 +731,7 @@ struct commit *get_revision(struct rev_info *revs) return NULL; if (revs->no_merges && commit->parents && commit->parents->next) goto next; - if (revs->paths && revs->dense) { + if (revs->prune_fn && revs->dense) { if (!(commit->object.flags & TREECHANGE)) goto next; rewrite_parents(commit); diff --git a/revision.h b/revision.h index 31e8f6156..6c2becad1 100644 --- a/revision.h +++ b/revision.h @@ -7,6 +7,10 @@ #define SHOWN (1u<<3) #define TMP_MARK (1u<<4) /* for isolated cases; clean after use */ +struct rev_info; + +typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit); + struct rev_info { /* Starting list */ struct commit_list *commits; @@ -14,7 +18,8 @@ struct rev_info { /* Basic information */ const char *prefix; - const char **paths; + void *prune_data; + prune_fn_t *prune_fn; /* Traversal flags */ unsigned int dense:1, @@ -33,9 +38,20 @@ struct rev_info { int max_count; unsigned long max_age; unsigned long min_age; + + topo_sort_set_fn_t topo_setter; + topo_sort_get_fn_t topo_getter; }; +#define REV_TREE_SAME 0 +#define REV_TREE_NEW 1 +#define REV_TREE_DIFFERENT 2 + /* revision.c */ +extern int rev_same_tree_as_empty(struct tree *t1); +extern int rev_compare_tree(struct tree *t1, struct tree *t2); + +extern void init_revisions(struct rev_info *revs); extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def); extern void prepare_revision_walk(struct rev_info *revs); extern struct commit *get_revision(struct rev_info *revs);