[PATCH 4/9] git-cat-file: Add --stdin option
This lets you specify object names on stdin instead of on the command line.
Signed-off-by: Adam Roben <aroben@apple.com>
---
Documentation/git-cat-file.txt | 6 +++++-
builtin-cat-file.c | 26 ++++++++++++++++++++++----
t/t1005-cat-file.sh | 14 ++++++++++++++
3 files changed, 41 insertions(+), 5 deletions(-)
diff --git a/Documentation/git-cat-file.txt b/Documentation/git-cat-file.txt
index afa095c..588d71a 100644
--- a/Documentation/git-cat-file.txt
+++ b/Documentation/git-cat-file.txt
@@ -8,7 +8,7 @@ git-cat-file - Provide content or type/size information for repository objects
SYNOPSIS
--------
-'git-cat-file' [-t | -s | -e | -p | <type>] <object>
+'git-cat-file' [-t | -s | -e | -p | <type>] [--stdin | <object>]
DESCRIPTION
-----------
@@ -23,6 +23,10 @@ OPTIONS
For a more complete list of ways to spell object names, see
"SPECIFYING REVISIONS" section in gitlink:git-rev-parse[1].
+--stdin::
+ Read object names from stdin instead of specifying one on the
+ command line.
+
-t::
Instead of the content, show the object type identified by
<object>.
diff --git a/builtin-cat-file.c b/builtin-cat-file.c
index 3a0be4a..0f1ffe5 100644
--- a/builtin-cat-file.c
+++ b/builtin-cat-file.c
@@ -143,12 +143,14 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
return 0;
}
-static const char cat_file_usage[] = "git-cat-file [-t|-s|-e|-p|<type>] <sha1>";
+static const char cat_file_usage[] = "git-cat-file [-t|-s|-e|-p|<type>] [--stdin | <sha1>]";
int cmd_cat_file(int argc, const char **argv, const char *prefix)
{
int i, opt = 0;
+ int read_stdin = 0;
const char *exp_type = 0, *obj_name = 0;
+ struct strbuf buf;
git_config(git_default_config);
@@ -161,6 +163,11 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
continue;
}
+ if (!strcmp(arg, "--stdin")) {
+ read_stdin = 1;
+ continue;
+ }
+
if (arg[0] == '-')
usage(cat_file_usage);
@@ -169,15 +176,26 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
continue;
}
- if (obj_name)
+ if (obj_name || read_stdin)
usage(cat_file_usage);
obj_name = arg;
break;
}
- if (!exp_type || !obj_name)
+ if (!read_stdin) {
+ if (!exp_type || !obj_name)
usage(cat_file_usage);
+ return cat_one_file(opt, exp_type, obj_name);
+ }
- return cat_one_file(opt, exp_type, obj_name);
+ strbuf_init(&buf, 0);
+ while (strbuf_getline(&buf, stdin, '\n') != EOF) {
+ int error = cat_one_file(opt, exp_type, buf.buf);
+ if (error)
+ return error;
+ }
+ strbuf_release(&buf);
+
+ return 0;
}
diff --git a/t/t1005-cat-file.sh b/t/t1005-cat-file.sh
index 2fdc446..49eb89d 100755
--- a/t/t1005-cat-file.sh
+++ b/t/t1005-cat-file.sh
@@ -88,4 +88,18 @@ test_expect_success \
"Reach a blob from a tag pointing to it" \
"test \"$hello_content\" = \"$(git cat-file blob $tag_sha1)\""
+sha1s="$hello_sha1
+$tree_sha1
+$commit_sha1
+$tag_sha1"
+
+sizes="$hello_size
+$tree_size
+$commit_size
+$tag_size"
+
+test_expect_success \
+ "Pass object hashes on stdin" \
+ "test \"$sizes\" = \"$(echo "$sha1s" | git cat-file -s --stdin)\""
+
test_done
--
1.5.3.4.1333.ga2f32
Adam Roben <aroben@apple.com>