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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
int line_termination = '\n';
int recursive = 0;
struct path_prefix {
struct path_prefix *prev;
const char *name;
};
static void print_path_prefix(struct path_prefix *prefix)
{
if (prefix) {
if (prefix->prev)
print_path_prefix(prefix->prev);
fputs(prefix->name, stdout);
putchar('/');
}
}
static void list_recursive(void *buffer,
unsigned char *type,
unsigned long size,
struct path_prefix *prefix)
{
struct path_prefix this_prefix;
this_prefix.prev = prefix;
if (strcmp(type, "tree"))
die("expected a 'tree' node");
while (size) {
int namelen = strlen(buffer)+1;
void *eltbuf;
char elttype[20];
unsigned long eltsize;
unsigned char *sha1 = buffer + namelen;
char *path = strchr(buffer, ' ') + 1;
unsigned int mode;
if (size < namelen + 20 || sscanf(buffer, "%o", &mode) != 1)
die("corrupt 'tree' file");
buffer = sha1 + 20;
size -= namelen + 20;
/* XXX: We do some ugly mode heuristics here.
* It seems not worth it to read each file just to get this
* and the file size. -- pasky@ucw.cz
* ... that is, when we are not recursive -- junkio@cox.net
*/
eltbuf = (recursive ? read_sha1_file(sha1, elttype, &eltsize) :
NULL);
if (! eltbuf) {
if (recursive)
error("cannot read %s", sha1_to_hex(sha1));
type = S_ISDIR(mode) ? "tree" : "blob";
}
else
type = elttype;
printf("%03o\t%s\t%s\t", mode, type, sha1_to_hex(sha1));
print_path_prefix(prefix);
fputs(path, stdout);
putchar(line_termination);
if (eltbuf && !strcmp(type, "tree")) {
this_prefix.name = path;
list_recursive(eltbuf, elttype, eltsize, &this_prefix);
}
free(eltbuf);
}
}
static int list(unsigned char *sha1)
{
void *buffer;
unsigned long size;
char type[20];
buffer = read_sha1_file(sha1, type, &size);
if (!buffer)
die("unable to read sha1 file");
list_recursive(buffer, type, size, NULL);
return 0;
}
static void _usage(void)
{
usage("ls-tree [-r] [-z] <key>");
}
int main(int argc, char **argv)
{
unsigned char sha1[20];
while (1 < argc && argv[1][0] == '-') {
switch (argv[1][1]) {
case 'z':
line_termination = 0;
break;
case 'r':
recursive = 1;
break;
default:
_usage();
}
argc--; argv++;
}
if (argc != 2)
_usage();
if (get_sha1_hex(argv[1], sha1) < 0)
_usage();
sha1_file_directory = getenv(DB_ENVIRONMENT);
if (!sha1_file_directory)
sha1_file_directory = DEFAULT_DB_ENVIRONMENT;
if (list(sha1) < 0)
die("list failed");
return 0;
}
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