diff options
Diffstat (limited to 'setup.c')
| -rw-r--r-- | setup.c | 24 |
1 files changed, 20 insertions, 4 deletions
@@ -5,7 +5,19 @@ static int inside_git_dir = -1; static int inside_work_tree = -1; -static char *prefix_path_gently(const char *prefix, int len, const char *path) +/* + * Normalize "path", prepending the "prefix" for relative paths. If + * remaining_prefix is not NULL, return the actual prefix still + * remains in the path. For example, prefix = sub1/sub2/ and path is + * + * foo -> sub1/sub2/foo (full prefix) + * ../foo -> sub1/foo (remaining prefix is sub1/) + * ../../bar -> bar (no remaining prefix) + * ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix) + * `pwd`/../bar -> sub1/bar (no remaining prefix) + */ +char *prefix_path_gently(const char *prefix, int len, + int *remaining_prefix, const char *path) { const char *orig = path; char *sanitized; @@ -13,13 +25,17 @@ static char *prefix_path_gently(const char *prefix, int len, const char *path) const char *temp = real_path(path); sanitized = xmalloc(len + strlen(temp) + 1); strcpy(sanitized, temp); + if (remaining_prefix) + *remaining_prefix = 0; } else { sanitized = xmalloc(len + strlen(path) + 1); if (len) memcpy(sanitized, prefix, len); strcpy(sanitized + len, path); + if (remaining_prefix) + *remaining_prefix = len; } - if (normalize_path_copy(sanitized, sanitized)) + if (normalize_path_copy_len(sanitized, sanitized, remaining_prefix)) goto error_out; if (is_absolute_path(orig)) { size_t root_len, len, total; @@ -44,7 +60,7 @@ static char *prefix_path_gently(const char *prefix, int len, const char *path) char *prefix_path(const char *prefix, int len, const char *path) { - char *r = prefix_path_gently(prefix, len, path); + char *r = prefix_path_gently(prefix, len, NULL, path); if (!r) die("'%s' is outside repository", path); return r; @@ -53,7 +69,7 @@ char *prefix_path(const char *prefix, int len, const char *path) int path_inside_repo(const char *prefix, const char *path) { int len = prefix ? strlen(prefix) : 0; - char *r = prefix_path_gently(prefix, len, path); + char *r = prefix_path_gently(prefix, len, NULL, path); if (r) { free(r); return 1; |