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update-index: --stdin and -z

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The new option --stdin reads list of paths to be updated from the
standard input.  As usual, -z means the paths are terminated with NUL
characters, as opposed to LF without that option.

This is useful to use git-diff-files -z and git-ls-files -z when the
platform xargs does not support -0 option, and obviously saves one
process even when xargs can take -0.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2005-09-26 18:13:08 -07:00
parent 1ddea77e44
commit ee1bec3d10
1 changed files with 41 additions and 13 deletions
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54
update-index.c
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@ -4,6 +4,7 @@
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
#include "strbuf.h"
/*
* Default to not allowing changes to the list of files. The
@ -277,11 +278,30 @@ static int add_cacheinfo(const char *arg1, const char *arg2, const char *arg3)
static struct cache_file cache_file;
static void update_one(const char *path, const char *prefix, int prefix_length)
{
const char *p = prefix_path(prefix, prefix_length, path);
if (!verify_path(p)) {
fprintf(stderr, "Ignoring path %s\n", path);
return;
}
if (force_remove) {
if (remove_file_from_cache(p))
die("git-update-index: unable to remove %s", path);
return;
}
if (add_file_to_cache(p))
die("Unable to process file %s", path);
}
int main(int argc, const char **argv)
{
int i, newfd, entries, has_errors = 0;
int i, newfd, entries, has_errors = 0, line_termination = '\n';
int allow_options = 1;
int read_from_stdin = 0;
const char *prefix = setup_git_directory();
int prefix_length = prefix ? strlen(prefix) : 0;
newfd = hold_index_file_for_update(&cache_file, get_index_file());
if (newfd < 0)
@ -335,25 +355,33 @@ int main(int argc, const char **argv)
force_remove = 1;
continue;
}
if (!strcmp(path, "-z")) {
line_termination = 0;
continue;
}
if (!strcmp(path, "--stdin")) {
if (i != argc - 1)
die("--stdin must be at the end");
read_from_stdin = 1;
break;
}
if (!strcmp(path, "--ignore-missing")) {
not_new = 1;
continue;
}
die("unknown option %s", path);
}
path = prefix_path(prefix, prefix ? strlen(prefix) : 0, path);
if (!verify_path(path)) {
fprintf(stderr, "Ignoring path %s\n", argv[i]);
continue;
update_one(path, prefix, prefix_length);
}
if (read_from_stdin) {
struct strbuf buf;
strbuf_init(&buf);
while (1) {
read_line(&buf, stdin, line_termination);
if (buf.eof)
break;
update_one(buf.buf, prefix, prefix_length);
}
if (force_remove) {
if (remove_file_from_cache(path))
die("git-update-index: unable to remove %s", path);
continue;
}
if (add_file_to_cache(path))
die("Unable to process file %s", path);
}
if (write_cache(newfd, active_cache, active_nr) ||
commit_index_file(&cache_file))