Since git-show is pure Porcelain, it is the ideal candidate to
pretty print other things than commits, too.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@xxxxxx>
---
Documentation/git-show.txt | 40 ++++++++++++++++++---
builtin-log.c | 82 +++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 114 insertions(+), 8 deletions(-)
diff --git a/Documentation/git-show.txt b/Documentation/git-show.txt
index 4c880a8..1d9d781 100644
--- a/Documentation/git-show.txt
+++ b/Documentation/git-show.txt
@@ -3,20 +3,27 @@ git-show(1)
NAME
----
-git-show - Show one commit with difference it introduces
+git-show - Show blobs, trees, tags and commits with difference they introduce
SYNOPSIS
--------
-'git-show' <option>...
+'git-show' [options] <object>...
DESCRIPTION
-----------
-Shows commit log and textual diff for a single commit. The
-command internally invokes 'git-rev-list' piped to
-'git-diff-tree', and takes command line options for both of
-these commands. It also presents the merge commit in a special
-format as produced by 'git-diff-tree --cc'.
+Shows one or more objects.
+
+For commits it shows the log message and textual diff. It also
+presents the merge commit in a special format as produced by
+'git-diff-tree --cc'.
+
+For tags, it shows the tag message and the referenced objects.
+
+For trees, it shows the names (equivalent to gitlink:git-ls-tree[1]
+with \--name-only).
+
+For plain blobs, it shows the plain contents.
This manual page describes only the most frequently used options.
@@ -28,6 +35,25 @@ OPTIONS
include::pretty-formats.txt[]
+
+EXAMPLES
+--------
+
+git show v1.0.0::
+ Shows the tag `v1.0.0`.
+
+git show v1.0.0^{tree}::
+ Shows the tree pointed to by the tag `v1.0.0`.
+
+git show next~10:Documentation/README
+ Shows the contents of the file `Documentation/README` as
+ they were current in the 10th last commit of the branch
+ `next`.
+
+git show master:Makefile master:t/Makefile
+ Concatenates the contents of said Makefiles in the head
+ of the branch `master`.
+
Author
------
Written by Linus Torvalds <torvalds@xxxxxxxx> and
diff --git a/builtin-log.c b/builtin-log.c
index 6821a08..17014f7 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -10,6 +10,7 @@
#include "revision.h"
#include "log-tree.h"
#include "builtin.h"
+#include "tag.h"
#include <time.h>
#include <sys/time.h>
@@ -71,9 +72,43 @@ int cmd_whatchanged(int argc, const char **argv, const char *prefix)
return cmd_log_walk(&rev);
}
+static int show_object(const unsigned char *sha1, int suppress_header)
+{
+ unsigned long size;
+ char type[20];
+ char *buf = read_sha1_file(sha1, type, &size);
+ int offset = 0;
+
+ if (!buf)
+ return error("Could not read object %s", sha1_to_hex(sha1));
+
+ if (suppress_header)
+ while (offset < size && buf[offset++] != '\n') {
+ int new_offset = offset;
+ while (new_offset < size && buf[new_offset++] != '\n')
+ ; /* do nothing */
+ offset = new_offset;
+ }
+
+ if (offset < size)
+ fwrite(buf + offset, size - offset, 1, stdout);
+ free(buf);
+ return 0;
+}
+
+static int show_tree_object(const unsigned char *sha1,
+ const char *base, int baselen,
+ const char *pathname, unsigned mode, int stage)
+{
+ printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
+ return 0;
+}
+
int cmd_show(int argc, const char **argv, const char *prefix)
{
struct rev_info rev;
+ struct object_array_entry *objects;
+ int i, count, ret = 0;
git_config(git_log_config);
init_revisions(&rev, prefix);
@@ -85,7 +120,52 @@ int cmd_show(int argc, const char **argv, const char *prefix)
rev.ignore_merges = 0;
rev.no_walk = 1;
cmd_log_init(argc, argv, prefix, &rev);
- return cmd_log_walk(&rev);
+
+ count = rev.pending.nr;
+ objects = rev.pending.objects;
+ for (i = 0; i < count && !ret; i++) {
+ struct object *o = objects[i].item;
+ const char *name = objects[i].name;
+ switch (o->type) {
+ case OBJ_BLOB:
+ ret = show_object(o->sha1, 0);
+ break;
+ case OBJ_TAG: {
+ struct tag *t = (struct tag *)o;
+
+ printf("%stag %s%s\n\n",
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_COMMIT),
+ t->tag,
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_RESET));
+ ret = show_object(o->sha1, 1);
+ objects[i].item = (struct object *)t->tagged;
+ i--;
+ break;
+ }
+ case OBJ_TREE:
+ printf("%stree %s%s\n\n",
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_COMMIT),
+ name,
+ diff_get_color(rev.diffopt.color_diff,
+ DIFF_RESET));
+ read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
+ show_tree_object);
+ break;
+ case OBJ_COMMIT:
+ rev.pending.nr = rev.pending.alloc = 0;
+ rev.pending.objects = NULL;
+ add_object_array(o, name, &rev.pending);
+ ret = cmd_log_walk(&rev);
+ break;
+ default:
+ ret = error("Unknown type: %d", o->type);
+ }
+ }
+ free(objects);
+ return ret;
}
int cmd_log(int argc, const char **argv, const char *prefix)
-
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