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![Linus Torvalds](/assets/img/avatar_default.png)
We may not actually have a valid HEAD at all times, so relax the validity tests for a .git subdirectory accordingly. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
110 lines
2 KiB
C
110 lines
2 KiB
C
#include "cache.h"
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const char **get_pathspec(const char *prefix, char **pathspec)
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{
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char *entry = *pathspec;
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char **p;
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int prefixlen;
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if (!prefix) {
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char **p;
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if (!entry)
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return NULL;
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p = pathspec;
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do {
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if (*entry != '.')
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continue;
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/* fixup ? */
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} while ((entry = *++p) != NULL);
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return (const char **) pathspec;
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}
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if (!entry) {
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static const char *spec[2];
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spec[0] = prefix;
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spec[1] = NULL;
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return spec;
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}
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/* Otherwise we have to re-write the entries.. */
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prefixlen = strlen(prefix);
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p = pathspec;
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do {
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int speclen, len = prefixlen;
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char *n;
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for (;;) {
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if (!strcmp(entry, ".")) {
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entry++;
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break;
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}
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if (!strncmp(entry, "./", 2)) {
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entry += 2;
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continue;
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}
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if (!strncmp(entry, "../", 3)) {
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do {
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if (!len)
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die("'%s' is outside repository", *p);
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len--;
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} while (len && prefix[len-1] != '/');
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entry += 3;
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continue;
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}
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break;
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}
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speclen = strlen(entry);
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n = xmalloc(speclen + len + 1);
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memcpy(n, prefix, len);
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memcpy(n + len, entry, speclen+1);
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*p = n;
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} while ((entry = *++p) != NULL);
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return (const char **) pathspec;
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}
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const char *setup_git_directory(void)
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{
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static char cwd[PATH_MAX+1];
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int len, offset;
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/*
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* If GIT_DIR is set explicitly, we're not going
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* to do any discovery
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*/
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if (gitenv(GIT_DIR_ENVIRONMENT))
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return NULL;
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if (!getcwd(cwd, sizeof(cwd)) || cwd[0] != '/')
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die("Unable to read current working directory");
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offset = len = strlen(cwd);
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for (;;) {
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/*
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* We always want to see a .git/refs/ subdirectory
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*/
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if (!access(".git/refs/", X_OK)) {
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/*
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* Then we need either a GIT_OBJECT_DIRECTORY define
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* or a .git/objects/ directory
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*/
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if (gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK))
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break;
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}
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chdir("..");
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do {
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if (!offset)
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die("Not a git repository");
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} while (cwd[--offset] != '/');
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}
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if (offset == len)
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return NULL;
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/* Make "offset" point to past the '/', and add a '/' at the end */
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offset++;
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cwd[len++] = '/';
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cwd[len] = 0;
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return cwd + offset;
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}
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