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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,
const 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;
printf("%06o\t%s\t%s\t", mode,
S_ISDIR(mode) ? "tree" : "blob",
sha1_to_hex(sha1));
print_path_prefix(prefix);
fputs(path, stdout);
putchar(line_termination);
if (! recursive || ! S_ISDIR(mode))
continue;
if (! (eltbuf = read_sha1_file(sha1, elttype, &eltsize)) ) {
error("cannot read %s", sha1_to_hex(sha1));
continue;
}
this_prefix.name = path;
list_recursive(eltbuf, elttype, eltsize, &this_prefix);
free(eltbuf);
}
}
static int list(unsigned char *sha1)
{
void *buffer;
unsigned long size;
buffer = read_object_with_reference(sha1, "tree", &size, 0);
if (!buffer)
die("unable to read sha1 file");
list_recursive(buffer, "tree", size, NULL);
return 0;
}
static const char *ls_tree_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(ls_tree_usage);
}
argc--; argv++;
}
if (argc != 2)
usage(ls_tree_usage);
if (get_sha1(argv[1], sha1) < 0)
usage(ls_tree_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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