Staging
v0.5.1
v0.5.1
Revision 883653babd8ee7ea23e6a5c392bb739348b1eb61 authored by Junio C Hamano on 13 September 2006, 06:53:27 UTC, committed by Junio C Hamano on 13 September 2006, 07:54:43 UTC
Fetch over http from a repository that uses alternates to borrow from neighbouring repositories were quite broken, apparently for some time now. We parse input and count bytes to allocate the new buffer, and when we copy into that buffer we know exactly how many bytes we want to copy from where. Using strlcpy for it was simply stupid, and the code forgot to take it into account that strlcpy terminated the string with NUL. Signed-off-by: Junio C Hamano <junkio@cox.net>
1 parent 60a6bf5
checkout-index.c
/*
* Check-out files from the "current cache directory"
*
* Copyright (C) 2005 Linus Torvalds
*
* Careful: order of argument flags does matter. For example,
*
* git-checkout-index -a -f file.c
*
* Will first check out all files listed in the cache (but not
* overwrite any old ones), and then force-checkout "file.c" a
* second time (ie that one _will_ overwrite any old contents
* with the same filename).
*
* Also, just doing "git-checkout-index" does nothing. You probably
* meant "git-checkout-index -a". And if you want to force it, you
* want "git-checkout-index -f -a".
*
* Intuitiveness is not the goal here. Repeatability is. The
* reason for the "no arguments means no work" thing is that
* from scripts you are supposed to be able to do things like
*
* find . -name '*.h' -print0 | xargs -0 git-checkout-index -f --
*
* or:
*
* find . -name '*.h' -print0 | git-checkout-index -f -z --stdin
*
* which will force all existing *.h files to be replaced with
* their cached copies. If an empty command line implied "all",
* then this would force-refresh everything in the cache, which
* was not the point.
*
* Oh, and the "--" is just a good idea when you know the rest
* will be filenames. Just so that you wouldn't have a filename
* of "-a" causing problems (not possible in the above example,
* but get used to it in scripting!).
*/
#include "cache.h"
#include "strbuf.h"
#include "quote.h"
#include "cache-tree.h"
#define CHECKOUT_ALL 4
static const char *prefix;
static int prefix_length;
static int line_termination = '\n';
static int checkout_stage; /* default to checkout stage0 */
static int to_tempfile;
static char topath[4][MAXPATHLEN+1];
static struct checkout state;
static void write_tempfile_record (const char *name)
{
int i;
if (CHECKOUT_ALL == checkout_stage) {
for (i = 1; i < 4; i++) {
if (i > 1)
putchar(' ');
if (topath[i][0])
fputs(topath[i], stdout);
else
putchar('.');
}
} else
fputs(topath[checkout_stage], stdout);
putchar('\t');
write_name_quoted("", 0, name + prefix_length,
line_termination, stdout);
putchar(line_termination);
for (i = 0; i < 4; i++) {
topath[i][0] = 0;
}
}
static int checkout_file(const char *name)
{
int namelen = strlen(name);
int pos = cache_name_pos(name, namelen);
int has_same_name = 0;
int did_checkout = 0;
int errs = 0;
if (pos < 0)
pos = -pos - 1;
while (pos < active_nr) {
struct cache_entry *ce = active_cache[pos];
if (ce_namelen(ce) != namelen ||
memcmp(ce->name, name, namelen))
break;
has_same_name = 1;
pos++;
if (ce_stage(ce) != checkout_stage
&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
continue;
did_checkout = 1;
if (checkout_entry(ce, &state,
to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
errs++;
}
if (did_checkout) {
if (to_tempfile)
write_tempfile_record(name);
return errs > 0 ? -1 : 0;
}
if (!state.quiet) {
fprintf(stderr, "git-checkout-index: %s ", name);
if (!has_same_name)
fprintf(stderr, "is not in the cache");
else if (checkout_stage)
fprintf(stderr, "does not exist at stage %d",
checkout_stage);
else
fprintf(stderr, "is unmerged");
fputc('\n', stderr);
}
return -1;
}
static int checkout_all(void)
{
int i, errs = 0;
struct cache_entry* last_ce = NULL;
for (i = 0; i < active_nr ; i++) {
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce) != checkout_stage
&& (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
continue;
if (prefix && *prefix &&
(ce_namelen(ce) <= prefix_length ||
memcmp(prefix, ce->name, prefix_length)))
continue;
if (last_ce && to_tempfile) {
if (ce_namelen(last_ce) != ce_namelen(ce)
|| memcmp(last_ce->name, ce->name, ce_namelen(ce)))
write_tempfile_record(last_ce->name);
}
if (checkout_entry(ce, &state,
to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
errs++;
last_ce = ce;
}
if (last_ce && to_tempfile)
write_tempfile_record(last_ce->name);
if (errs)
/* we have already done our error reporting.
* exit with the same code as die().
*/
exit(128);
return 0;
}
static const char checkout_cache_usage[] =
"git-checkout-index [-u] [-q] [-a] [-f] [-n] [--stage=[123]|all] [--prefix=<string>] [--temp] [--] <file>...";
static struct lock_file lock_file;
int main(int argc, char **argv)
{
int i;
int newfd = -1;
int all = 0;
int read_from_stdin = 0;
state.base_dir = "";
prefix = setup_git_directory();
git_config(git_default_config);
prefix_length = prefix ? strlen(prefix) : 0;
if (read_cache() < 0) {
die("invalid cache");
}
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--")) {
i++;
break;
}
if (!strcmp(arg, "-a") || !strcmp(arg, "--all")) {
all = 1;
continue;
}
if (!strcmp(arg, "-f") || !strcmp(arg, "--force")) {
state.force = 1;
continue;
}
if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
state.quiet = 1;
continue;
}
if (!strcmp(arg, "-n") || !strcmp(arg, "--no-create")) {
state.not_new = 1;
continue;
}
if (!strcmp(arg, "-u") || !strcmp(arg, "--index")) {
state.refresh_cache = 1;
if (newfd < 0)
newfd = hold_lock_file_for_update
(&lock_file, get_index_file(), 1);
if (newfd < 0)
die("cannot open index.lock file.");
continue;
}
if (!strcmp(arg, "-z")) {
line_termination = 0;
continue;
}
if (!strcmp(arg, "--stdin")) {
if (i != argc - 1)
die("--stdin must be at the end");
read_from_stdin = 1;
i++; /* do not consider arg as a file name */
break;
}
if (!strcmp(arg, "--temp")) {
to_tempfile = 1;
continue;
}
if (!strncmp(arg, "--prefix=", 9)) {
state.base_dir = arg+9;
state.base_dir_len = strlen(state.base_dir);
continue;
}
if (!strncmp(arg, "--stage=", 8)) {
if (!strcmp(arg + 8, "all")) {
to_tempfile = 1;
checkout_stage = CHECKOUT_ALL;
} else {
int ch = arg[8];
if ('1' <= ch && ch <= '3')
checkout_stage = arg[8] - '0';
else
die("stage should be between 1 and 3 or all");
}
continue;
}
if (arg[0] == '-')
usage(checkout_cache_usage);
break;
}
if (state.base_dir_len || to_tempfile) {
/* when --prefix is specified we do not
* want to update cache.
*/
if (state.refresh_cache) {
close(newfd); newfd = -1;
rollback_lock_file(&lock_file);
}
state.refresh_cache = 0;
}
/* Check out named files first */
for ( ; i < argc; i++) {
const char *arg = argv[i];
const char *p;
if (all)
die("git-checkout-index: don't mix '--all' and explicit filenames");
if (read_from_stdin)
die("git-checkout-index: don't mix '--stdin' and explicit filenames");
p = prefix_path(prefix, prefix_length, arg);
checkout_file(p);
if (p < arg || p > arg + strlen(arg))
free((char*)p);
}
if (read_from_stdin) {
struct strbuf buf;
if (all)
die("git-checkout-index: don't mix '--all' and '--stdin'");
strbuf_init(&buf);
while (1) {
char *path_name;
const char *p;
read_line(&buf, stdin, line_termination);
if (buf.eof)
break;
if (line_termination && buf.buf[0] == '"')
path_name = unquote_c_style(buf.buf, NULL);
else
path_name = buf.buf;
p = prefix_path(prefix, prefix_length, path_name);
checkout_file(p);
if (p < path_name || p > path_name + strlen(path_name))
free((char *)p);
if (path_name != buf.buf)
free(path_name);
}
}
if (all)
checkout_all();
if (0 <= newfd &&
(write_cache(newfd, active_cache, active_nr) ||
close(newfd) || commit_lock_file(&lock_file)))
die("Unable to write new index file");
return 0;
}
Computing file changes ...