struct stat sb;
return stat(f, &sb) == 0;
}
+
+/*
+ * get_relative_cwd() gets the prefix of the current working directory
+ * relative to 'dir'. If we are not inside 'dir', it returns NULL.
+ * As a convenience, it also returns NULL if 'dir' is already NULL.
+ */
+char *get_relative_cwd(char *buffer, int size, const char *dir)
+{
+ char *cwd = buffer;
+
+ /*
+ * a lazy caller can pass a NULL returned from get_git_work_tree()
+ * and rely on this function to return NULL.
+ */
+ if (!dir)
+ return NULL;
+ if (!getcwd(buffer, size))
+ die("can't find the current directory: %s", strerror(errno));
+
+ if (!is_absolute_path(dir))
+ dir = make_absolute_path(dir);
+
+ while (*dir && *dir == *cwd) {
+ dir++;
+ cwd++;
+ }
+ if (*dir)
+ return NULL;
+ if (*cwd == '/')
+ return cwd + 1;
+ return cwd;
+}
+
+int is_inside_dir(const char *dir)
+{
+ char buffer[PATH_MAX];
+ return get_relative_cwd(buffer, sizeof(buffer), dir) != NULL;
+}
extern int file_exists(const char *);
extern struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len);
+extern char *get_relative_cwd(char *buffer, int size, const char *dir);
+extern int is_inside_dir(const char *dir);
+
#endif