From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Schindelin Subject: [PATCH 2/5] Add functions get_relative_cwd() and is_inside_dir() Date: Thu, 26 Jul 2007 07:24:55 +0100 (BST) Message-ID: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: git@vger.kernel.org, gitster@pobox.com X-From: git-owner@vger.kernel.org Thu Jul 26 08:25:05 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 1IDwmW-0003Hl-DP for gcvg-git@gmane.org; Thu, 26 Jul 2007 08:25:04 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753373AbXGZGZA (ORCPT ); Thu, 26 Jul 2007 02:25:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753313AbXGZGZA (ORCPT ); Thu, 26 Jul 2007 02:25:00 -0400 Received: from mail.gmx.net ([213.165.64.20]:52507 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753300AbXGZGY7 (ORCPT ); Thu, 26 Jul 2007 02:24:59 -0400 Received: (qmail invoked by alias); 26 Jul 2007 06:24:57 -0000 Received: from wbgn013.biozentrum.uni-wuerzburg.de (EHLO openvpn-client) [132.187.25.13] by mail.gmx.net (mp045) with SMTP; 26 Jul 2007 08:24:57 +0200 X-Authenticated: #1490710 X-Provags-ID: V01U2FsdGVkX19/d+kaLAJ/C0LTV5nVBs8d1yUg+q3PXHItT/Miog 7qvZn4TJjOgwZ1 X-X-Sender: gene099@racer.site 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 | 27 +++++++++++++++++++++++++++ dir.h | 3 +++ 2 files changed, 30 insertions(+), 0 deletions(-) diff --git a/dir.c b/dir.c index 8d8faf5..cb95538 100644 --- a/dir.c +++ b/dir.c @@ -642,3 +642,30 @@ 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, PATH_MAX)) + return 0; + + 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.rc2.42.gda8d-dirty