No funny names on cygwin...
[git.git] / rev-list.c
index fdb531c..c60aa72 100644 (file)
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "refs.h"
 #include "tag.h"
 #include "commit.h"
 #include "tree.h"
 #define SHOWN          (1u << 3)
 
 static const char rev_list_usage[] =
-       "usage: git-rev-list [OPTION] commit-id <commit-id>\n"
+       "git-rev-list [OPTION] commit-id <commit-id>\n"
                      "  --max-count=nr\n"
                      "  --max-age=epoch\n"
                      "  --min-age=epoch\n"
+                     "  --parents\n"
                      "  --bisect\n"
                      "  --objects\n"
                      "  --unpacked\n"
                      "  --header\n"
                      "  --pretty\n"
-                     "  --merge-order [ --show-breaks ]";
+                     "  --no-merges\n"
+                     "  --merge-order [ --show-breaks ]\n"
+                     "  --topo-order";
 
 static int unpacked = 0;
 static int bisect_list = 0;
@@ -30,7 +34,7 @@ static int blob_objects = 0;
 static int verbose_header = 0;
 static int show_parents = 0;
 static int hdr_termination = 0;
-static const char *prefix = "";
+static const char *commit_prefix = "";
 static unsigned long max_age = -1;
 static unsigned long min_age = -1;
 static int max_count = -1;
@@ -39,19 +43,20 @@ static int merge_order = 0;
 static int show_breaks = 0;
 static int stop_traversal = 0;
 static int topo_order = 0;
+static int no_merges = 0;
 
 static void show_commit(struct commit *commit)
 {
        commit->object.flags |= SHOWN;
        if (show_breaks) {
-               prefix = "| ";
+               commit_prefix = "| ";
                if (commit->object.flags & DISCONTINUITY) {
-                       prefix = "^ ";     
+                       commit_prefix = "^ ";     
                } else if (commit->object.flags & BOUNDARY) {
-                       prefix = "= ";
+                       commit_prefix = "= ";
                } 
         }                      
-       printf("%s%s", prefix, sha1_to_hex(commit->object.sha1));
+       printf("%s%s", commit_prefix, sha1_to_hex(commit->object.sha1));
        if (show_parents) {
                struct commit_list *parents = commit->parents;
                while (parents) {
@@ -59,7 +64,11 @@ static void show_commit(struct commit *commit)
                        parents = parents->next;
                }
        }
-       putchar('\n');
+       if (commit_format == CMIT_FMT_ONELINE)
+               putchar(' ');
+       else
+               putchar('\n');
+
        if (verbose_header) {
                static char pretty_header[16384];
                pretty_print_commit(commit_format, commit->buffer, ~0, pretty_header, sizeof(pretty_header));
@@ -78,10 +87,12 @@ static int filter_commit(struct commit * commit)
                return CONTINUE;
        if (max_age != -1 && (commit->date < max_age)) {
                stop_traversal=1;
-               return merge_order?CONTINUE:STOP;
+               return CONTINUE;
        }
        if (max_count != -1 && !max_count--)
                return STOP;
+       if (no_merges && (commit->parents && commit->parents->next))
+               return CONTINUE;
        return DO;
 }
 
@@ -137,11 +148,16 @@ static struct object_list **process_tree(struct tree *tree, struct object_list *
                die("bad tree object %s", sha1_to_hex(obj->sha1));
        obj->flags |= SEEN;
        p = add_object(obj, p, name);
-       for (entry = tree->entries ; entry ; entry = entry->next) {
+       entry = tree->entries;
+       tree->entries = NULL;
+       while (entry) {
+               struct tree_entry_list *next = entry->next;
                if (entry->directory)
                        p = process_tree(entry->item.tree, p, entry->name);
                else
                        p = process_blob(entry->item.blob, p, entry->name);
+               free(entry);
+               entry = next;
        }
        return p;
 }
@@ -179,7 +195,17 @@ static void show_commit_list(struct commit_list *list)
                die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
        }
        while (objects) {
-               printf("%s %s\n", sha1_to_hex(objects->item->sha1), objects->name);
+               /* An object with name "foo\n0000000000000000000000000000000000000000"
+                * can be used confuse downstream git-pack-objects very badly.
+                */
+               const char *ep = strchr(objects->name, '\n');
+               if (ep) {
+                       printf("%s %.*s\n", sha1_to_hex(objects->item->sha1),
+                              (int) (ep - objects->name),
+                              objects->name);
+               }
+               else
+                       printf("%s %s\n", sha1_to_hex(objects->item->sha1), objects->name);
                objects = objects->next;
        }
 }
@@ -208,12 +234,15 @@ static void mark_tree_uninteresting(struct tree *tree)
        if (parse_tree(tree) < 0)
                die("bad tree %s", sha1_to_hex(obj->sha1));
        entry = tree->entries;
+       tree->entries = NULL;
        while (entry) {
+               struct tree_entry_list *next = entry->next;
                if (entry->directory)
                        mark_tree_uninteresting(entry->item.tree);
                else
                        mark_blob_uninteresting(entry->item.blob);
-               entry = entry->next;
+               free(entry);
+               entry = next;
        }
 }
 
@@ -221,13 +250,22 @@ static void mark_parents_uninteresting(struct commit *commit)
 {
        struct commit_list *parents = commit->parents;
 
-       if (tree_objects)
-               mark_tree_uninteresting(commit->tree);
        while (parents) {
                struct commit *commit = parents->item;
                commit->object.flags |= UNINTERESTING;
 
                /*
+                * Normally we haven't parsed the parent
+                * yet, so we won't have a parent of a parent
+                * here. However, it may turn out that we've
+                * reached this commit some other way (where it
+                * wasn't uninteresting), in which case we need
+                * to mark its parents recursively too..
+                */
+               if (commit->parents)
+                       mark_parents_uninteresting(commit);
+
+               /*
                 * A missing commit is ok iff its parent is marked 
                 * uninteresting.
                 *
@@ -241,8 +279,9 @@ static void mark_parents_uninteresting(struct commit *commit)
        }
 }
 
-static int everybody_uninteresting(struct commit_list *list)
+static int everybody_uninteresting(struct commit_list *orig)
 {
+       struct commit_list *list = orig;
        while (list) {
                struct commit *commit = list->item;
                list = list->next;
@@ -325,6 +364,19 @@ static struct commit_list *find_bisection(struct commit_list *list)
        return best;
 }
 
+static void mark_edges_uninteresting(struct commit_list *list)
+{
+       for ( ; list; list = list->next) {
+               struct commit_list *parents = list->item->parents;
+
+               for ( ; parents; parents = parents->next) {
+                       struct commit *commit = parents->item;
+                       if (commit->object.flags & UNINTERESTING)
+                               mark_tree_uninteresting(commit->tree);
+               }
+       }
+}
+
 static struct commit_list *limit_list(struct commit_list *list)
 {
        struct commit_list *newlist = NULL;
@@ -333,6 +385,8 @@ static struct commit_list *limit_list(struct commit_list *list)
                struct commit *commit = pop_most_recent_commit(&list, SEEN);
                struct object *obj = &commit->object;
 
+               if (max_age != -1 && (commit->date < max_age))
+                       obj->flags |= UNINTERESTING;
                if (unpacked && has_sha1_pack(obj->sha1))
                        obj->flags |= UNINTERESTING;
                if (obj->flags & UNINTERESTING) {
@@ -341,8 +395,12 @@ static struct commit_list *limit_list(struct commit_list *list)
                                break;
                        continue;
                }
+               if (min_age != -1 && (commit->date > min_age))
+                       continue;
                p = &commit_list_insert(commit, p)->next;
        }
+       if (tree_objects)
+               mark_edges_uninteresting(newlist);
        if (bisect_list)
                newlist = find_bisection(newlist);
        return newlist;
@@ -373,6 +431,8 @@ static struct commit *get_commit_reference(const char *name, unsigned int flags)
                if (tag_objects && !(object->flags & UNINTERESTING))
                        add_pending_object(object, tag->tag);
                object = parse_object(tag->tagged->sha1);
+               if (!object)
+                       die("bad object %s", sha1_to_hex(tag->tagged->sha1));
        }
 
        /*
@@ -422,14 +482,41 @@ static struct commit *get_commit_reference(const char *name, unsigned int flags)
        die("%s is unknown object", name);
 }
 
+static void handle_one_commit(struct commit *com, struct commit_list **lst)
+{
+       if (!com || com->object.flags & SEEN)
+               return;
+       com->object.flags |= SEEN;
+       commit_list_insert(com, lst);
+}
+
+/* for_each_ref() callback does not allow user data -- Yuck. */
+static struct commit_list **global_lst;
+
+static int include_one_commit(const char *path, const unsigned char *sha1)
+{
+       struct commit *com = get_commit_reference(path, 0);
+       handle_one_commit(com, global_lst);
+       return 0;
+}
+
+static void handle_all(struct commit_list **lst)
+{
+       global_lst = lst;
+       for_each_ref(include_one_commit);
+       global_lst = NULL;
+}
+
 int main(int argc, char **argv)
 {
        struct commit_list *list = NULL;
        int i, limited = 0;
 
+       setup_git_directory();
        for (i = 1 ; i < argc; i++) {
                int flags;
                char *arg = argv[i];
+               char *dotdot;
                struct commit *commit;
 
                if (!strncmp(arg, "--max-count=", 12)) {
@@ -438,10 +525,12 @@ int main(int argc, char **argv)
                }
                if (!strncmp(arg, "--max-age=", 10)) {
                        max_age = atoi(arg + 10);
+                       limited = 1;
                        continue;
                }
                if (!strncmp(arg, "--min-age=", 10)) {
                        min_age = atoi(arg + 10);
+                       limited = 1;
                        continue;
                }
                if (!strcmp(arg, "--header")) {
@@ -452,7 +541,14 @@ int main(int argc, char **argv)
                        commit_format = get_commit_format(arg+8);
                        verbose_header = 1;
                        hdr_termination = '\n';
-                       prefix = "commit ";
+                       if (commit_format == CMIT_FMT_ONELINE)
+                               commit_prefix = "";
+                       else
+                               commit_prefix = "commit ";
+                       continue;
+               }
+               if (!strncmp(arg, "--no-merges", 11)) {
+                       no_merges = 1;
                        continue;
                }
                if (!strcmp(arg, "--parents")) {
@@ -463,6 +559,10 @@ int main(int argc, char **argv)
                        bisect_list = 1;
                        continue;
                }
+               if (!strcmp(arg, "--all")) {
+                       handle_all(&list);
+                       continue;
+               }
                if (!strcmp(arg, "--objects")) {
                        tag_objects = 1;
                        tree_objects = 1;
@@ -488,23 +588,40 @@ int main(int argc, char **argv)
                        continue;
                }
 
+               if (show_breaks && !merge_order)
+                       usage(rev_list_usage);
+
                flags = 0;
+               dotdot = strstr(arg, "..");
+               if (dotdot) {
+                       char *next = dotdot + 2;
+                       struct commit *exclude = NULL;
+                       struct commit *include = NULL;
+                       *dotdot = 0;
+                       if (!*next)
+                               next = "HEAD";
+                       exclude = get_commit_reference(arg, UNINTERESTING);
+                       include = get_commit_reference(next, 0);
+                       if (exclude && include) {
+                               limited = 1;
+                               handle_one_commit(exclude, &list);
+                               handle_one_commit(include, &list);
+                               continue;
+                       }
+                       *dotdot = '.';
+               }
                if (*arg == '^') {
                        flags = UNINTERESTING;
                        arg++;
                        limited = 1;
                }
-               if (show_breaks && !merge_order)
-                       usage(rev_list_usage);
                commit = get_commit_reference(arg, flags);
-               if (!commit)
-                       continue;
-               if (commit->object.flags & SEEN)
-                       continue;
-               commit->object.flags |= SEEN;
-               commit_list_insert(commit, &list);
+               handle_one_commit(commit, &list);
        }
 
+       save_commit_buffer = verbose_header;
+       track_object_refs = 0;
+
        if (!merge_order) {             
                sort_by_date(&list);
                if (limited)
@@ -513,9 +630,13 @@ int main(int argc, char **argv)
                        sort_in_topological_order(&list);
                show_commit_list(list);
        } else {
+#ifndef NO_OPENSSL
                if (sort_list_in_merge_order(list, &process_commit)) {
-                         die("merge order sort failed\n");
+                       die("merge order sort failed\n");
                }
+#else
+               die("merge order sort unsupported, OpenSSL not linked");
+#endif
        }
 
        return 0;