Sometimes, we only want to get the objects from output of `ls-tree`
and commands like `sed` or `cut` is usually used to intercept the
origin output to achieve this purpose in practical.
This commit supply an option names `--oid-only` to let `git ls-tree`
only print out the OID of the object. `--oid-only` and `--name-only`
are mutually exclusive in use.
Signed-off-by: Teng Long <dyroneteng@xxxxxxxxx>
---
Documentation/git-ls-tree.txt | 8 +++++--
builtin/ls-tree.c | 27 ++++++++++++++++-------
t/t3104-ls-tree-oid.sh | 40 +++++++++++++++++++++++++++++++++++
3 files changed, 65 insertions(+), 10 deletions(-)
create mode 100755 t/t3104-ls-tree-oid.sh
diff --git a/Documentation/git-ls-tree.txt b/Documentation/git-ls-tree.txt
index db02d6d79a..bc711dc00a 100644
--- a/Documentation/git-ls-tree.txt
+++ b/Documentation/git-ls-tree.txt
@@ -10,7 +10,8 @@ SYNOPSIS
--------
[verse]
'git ls-tree' [-d] [-r] [-t] [-l] [-z]
- [--name-only] [--name-status] [--full-name] [--full-tree] [--abbrev[=<n>]]
+ [--name-only] [--name-status] [--oid-only]
+ [--full-name] [--full-tree] [--abbrev[=<n>]]
<tree-ish> [<path>...]
DESCRIPTION
@@ -59,7 +60,10 @@ OPTIONS
--name-only::
--name-status::
List only filenames (instead of the "long" output), one per line.
-
+ Cannot be used with `--oid-only` together.
+--oid-only::
+ List only OIDs of the objects, one per line. Cannot be used with
+ `--name-only` or `--name-status` together.
--abbrev[=<n>]::
Instead of showing the full 40-byte hexadecimal object
lines, show the shortest prefix that is at least '<n>'
diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c
index 3a442631c7..1e4a82e669 100644
--- a/builtin/ls-tree.c
+++ b/builtin/ls-tree.c
@@ -18,19 +18,26 @@ static int line_termination = '\n';
#define LS_RECURSIVE 1
#define LS_TREE_ONLY 2
#define LS_SHOW_TREES 4
-#define LS_NAME_ONLY 8
-#define LS_SHOW_SIZE 16
+#define LS_SHOW_SIZE 8
static int abbrev;
static int ls_options;
static struct pathspec pathspec;
static int chomp_prefix;
static const char *ls_tree_prefix;
-static const char * const ls_tree_usage[] = {
+static const char * const ls_tree_usage[] = {
N_("git ls-tree [<options>] <tree-ish> [<path>...]"),
NULL
};
+enum {
+ MODE_UNSPECIFIED = 0,
+ MODE_NAME_ONLY,
+ MODE_OID_ONLY
+};
+
+static int cmdmode = MODE_UNSPECIFIED;
+
static int show_recursive(const char *base, int baselen, const char *pathname)
{
int i;
@@ -90,7 +97,12 @@ static int show_tree(const struct object_id *oid, struct strbuf *base,
else if (ls_options & LS_TREE_ONLY)
return 0;
- if (!(ls_options & LS_NAME_ONLY)) {
+ if (cmdmode == 2) {
+ printf("%s\n", find_unique_abbrev(oid, abbrev));
+ return 0;
+ }
+
+ if (cmdmode == 0) {
if (ls_options & LS_SHOW_SIZE) {
char size_text[24];
if (!strcmp(type, blob_type)) {
@@ -135,10 +147,9 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
N_("terminate entries with NUL byte"), 0),
OPT_BIT('l', "long", &ls_options, N_("include object size"),
LS_SHOW_SIZE),
- OPT_BIT(0, "name-only", &ls_options, N_("list only filenames"),
- LS_NAME_ONLY),
- OPT_BIT(0, "name-status", &ls_options, N_("list only filenames"),
- LS_NAME_ONLY),
+ OPT_CMDMODE('n', "name-only", &cmdmode, N_("list only filenames"), MODE_NAME_ONLY),
+ OPT_CMDMODE('s', "name-status", &cmdmode, N_("list only filenames"), MODE_NAME_ONLY),
+ OPT_CMDMODE('o', "oid-only", &cmdmode, N_("list only oids"), MODE_OID_ONLY),
OPT_SET_INT(0, "full-name", &chomp_prefix,
N_("use full path names"), 0),
OPT_BOOL(0, "full-tree", &full_tree,
diff --git a/t/t3104-ls-tree-oid.sh b/t/t3104-ls-tree-oid.sh
new file mode 100755
index 0000000000..4c02cdd3c3
--- /dev/null
+++ b/t/t3104-ls-tree-oid.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+test_description='git ls-tree oids handling.'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ echo 111 >1.txt &&
+ echo 222 >2.txt &&
+ mkdir -p path0/a/b/c &&
+ echo 333 >path0/a/b/c/3.txt &&
+ find *.txt path* \( -type f -o -type l \) -print |
+ xargs git update-index --add &&
+ tree=$(git write-tree) &&
+ echo $tree
+'
+
+test_expect_success 'usage: --oid-only' '
+ git ls-tree --oid-only $tree >current &&
+ git ls-tree $tree | awk "{print \$3}" >expected &&
+ test_cmp current expected
+'
+
+test_expect_success 'usage: --oid-only with -r' '
+ git ls-tree --oid-only -r $tree >current &&
+ git ls-tree -r $tree | awk "{print \$3}" >expected &&
+ test_cmp current expected
+'
+
+test_expect_success 'usage: --oid-only with --abbrev' '
+ git ls-tree --oid-only --abbrev=6 $tree >current &&
+ git ls-tree --abbrev=6 $tree | awk "{print \$3}" > expected &&
+ test_cmp current expected
+'
+
+test_expect_failure 'usage: incompatible options: --name-only with --oid-only' '
+ test_incompatible_usage git ls-tree --oid-only --name-only
+'
+
+test_done
--
2.33.1.10.g438dd9044d.dirty
