From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Schindelin Subject: [PATCH 2/9] Add functions get_relative_cwd() and is_inside_dir() Date: Mon, 30 Jul 2007 00:24:24 +0100 (BST) Message-ID: References: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: gitster@pobox.com, git@vger.kernel.org, matled@gmx.net X-From: git-owner@vger.kernel.org Mon Jul 30 01:24:45 2007 Return-path: Envelope-to: gcvg-git@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1IFI7v-0002KU-Jf for gcvg-git@gmane.org; Mon, 30 Jul 2007 01:24:43 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934966AbXG2XYl (ORCPT ); Sun, 29 Jul 2007 19:24:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934906AbXG2XYl (ORCPT ); Sun, 29 Jul 2007 19:24:41 -0400 Received: from mail.gmx.net ([213.165.64.20]:58162 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S934646AbXG2XYk (ORCPT ); Sun, 29 Jul 2007 19:24:40 -0400 Received: (qmail invoked by alias); 29 Jul 2007 23:24:38 -0000 Received: from wbgn013.biozentrum.uni-wuerzburg.de (EHLO openvpn-client) [132.187.25.13] by mail.gmx.net (mp027) with SMTP; 30 Jul 2007 01:24:38 +0200 X-Authenticated: #1490710 X-Provags-ID: V01U2FsdGVkX18MSgEMjaUMOnuL+pHYmm71mlE+zRMCzVsyV6/fCV sriimF8pgwlhsW X-X-Sender: gene099@racer.site In-Reply-To: X-Y-GMX-Trusted: 0 Sender: git-owner@vger.kernel.org Precedence: bulk X-Mailing-List: git@vger.kernel.org Archived-At: The function get_relative_cwd() works just as getcwd(), only that it takes an absolute path as additional parameter, returning the prefix of the current working directory relative to the given path. If the cwd is no subdirectory of the given path, it returns NULL. is_inside_dir() is just a trivial wrapper over get_relative_cwd(). Signed-off-by: Johannes Schindelin --- dir.c | 30 ++++++++++++++++++++++++++++++ dir.h | 3 +++ 2 files changed, 33 insertions(+), 0 deletions(-) diff --git a/dir.c b/dir.c index 8d8faf5..ef67d6f 100644 --- a/dir.c +++ b/dir.c @@ -642,3 +642,33 @@ file_exists(const char *f) struct stat sb; return stat(f, &sb) == 0; } + +char *get_relative_cwd(char *buffer, int size, const char *dir) +{ + char *cwd = buffer; + + if (!dir) + return 0; + + if (!getcwd(buffer, size)) + return 0; + + 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; +} diff --git a/dir.h b/dir.h index ec0e8ab..f55a87b 100644 --- a/dir.h +++ b/dir.h @@ -61,4 +61,7 @@ extern void add_exclude(const char *string, const char *base, 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 -- 1.5.3.rc3.28.g1406