Document git read-tree --trivial

diff --git a/builtin-name-rev.c b/builtin-name-rev.c
index 2c3d14c1ba68293404d3c743316d744d022ed901..61eba343ab781341a0baf127b323508a0c2af332 100644 (file)
--- a/builtin-name-rev.c
+++ b/builtin-name-rev.c
@@ -4,6 +4,8 @@
 #include "tag.h"
 #include "refs.h"
 
+#define CUTOFF_DATE_SLOP 86400 /* one day */
+
 static const char name_rev_usage[] =
        "git-name-rev [--tags | --refs=<pattern>] ( --all | --stdin | committish [committish...] )\n";
 
@@ -57,13 +59,20 @@ static void name_rev(struct commit *commit,
                        parents;
                        parents = parents->next, parent_number++) {
                if (parent_number > 1) {
-                       char *new_name = xmalloc(strlen(tip_name)+8);
-
+                       int len = strlen(tip_name);
+                       char *new_name = xmalloc(len +
+                               1 + decimal_length(generation) +  /* ~<n> */
+                               1 + 2 +                           /* ^NN */
+                               1);
+
+                       if (len > 2 && !strcmp(tip_name + len - 2, "^0"))
+                               len -= 2;
                        if (generation > 0)
-                               sprintf(new_name, "%s~%d^%d", tip_name,
+                               sprintf(new_name, "%.*s~%d^%d", len, tip_name,
                                                generation, parent_number);
                        else
-                               sprintf(new_name, "%s^%d", tip_name, parent_number);
+                               sprintf(new_name, "%.*s^%d", len, tip_name,
+                                               parent_number);
 
                        name_rev(parents->item, new_name,
                                merge_traversals + 1 , 0, 0);
@@ -76,6 +85,7 @@ static void name_rev(struct commit *commit,
 
 struct name_ref_data {
        int tags_only;
+       int name_only;
        const char *ref_filter;
 };
 
@@ -103,6 +113,10 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
 
                if (!prefixcmp(path, "refs/heads/"))
                        path = path + 11;
+               else if (data->tags_only
+                   && data->name_only
+                   && !prefixcmp(path, "refs/tags/"))
+                       path = path + 10;
                else if (!prefixcmp(path, "refs/"))
                        path = path + 5;
 
@@ -127,17 +141,22 @@ static const char* get_rev_name(struct object *o)
 
        if (!n->generation)
                return n->tip_name;
-
-       snprintf(buffer, sizeof(buffer), "%s~%d", n->tip_name, n->generation);
-
-       return buffer;
+       else {
+               int len = strlen(n->tip_name);
+               if (len > 2 && !strcmp(n->tip_name + len - 2, "^0"))
+                       len -= 2;
+               snprintf(buffer, sizeof(buffer), "%.*s~%d", len, n->tip_name,
+                               n->generation);
+
+               return buffer;
+       }
 }
 
 int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
        struct object_array revs = { 0, 0, NULL };
        int as_is = 0, all = 0, transform_stdin = 0;
-       struct name_ref_data data = { 0, NULL };
+       struct name_ref_data data = { 0, 0, NULL };
 
        git_config(git_default_config);
 
@@ -153,6 +172,9 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                        if (!strcmp(*argv, "--")) {
                                as_is = 1;
                                continue;
+                       } else if (!strcmp(*argv, "--name-only")) {
+                               data.name_only = 1;
+                               continue;
                        } else if (!strcmp(*argv, "--tags")) {
                                data.tags_only = 1;
                                continue;
@@ -196,6 +218,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                add_object_array((struct object *)commit, *argv, &revs);
        }
 
+       if (cutoff)
+               cutoff = cutoff - CUTOFF_DATE_SLOP;
        for_each_ref(name_ref, &data);
 
        if (transform_stdin) {
@@ -251,16 +275,18 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
                        struct object * obj = get_indexed_object(i);
                        if (!obj)
                                continue;
-                       printf("%s %s\n", sha1_to_hex(obj->sha1), get_rev_name(obj));
+                       if (!data.name_only)
+                               printf("%s ", sha1_to_hex(obj->sha1));
+                       printf("%s\n", get_rev_name(obj));
                }
        } else {
                int i;
-               for (i = 0; i < revs.nr; i++)
-                       printf("%s %s\n",
-                               revs.objects[i].name,
-                               get_rev_name(revs.objects[i].item));
+               for (i = 0; i < revs.nr; i++) {
+                       if (!data.name_only)
+                               printf("%s ", revs.objects[i].name);
+                       printf("%s\n", get_rev_name(revs.objects[i].item));
+               }
        }
 
        return 0;
 }
-