From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Subject: [PATCH 04/20] dir.c: optionally compute sha-1 of a .gitignore file Date: Wed, 7 May 2014 21:51:44 +0700 Message-ID: <1399474320-6840-5-git-send-email-pclouds@gmail.com> References: <1399474320-6840-1-git-send-email-pclouds@gmail.com> Cc: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Wed May 07 16:52:28 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wi3Ct-0005bD-OC for gcvg-git-2@plane.gmane.org; Wed, 07 May 2014 16:52:28 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755781AbaEGOwY (ORCPT ); Wed, 7 May 2014 10:52:24 -0400 Received: from mail-pa0-f52.google.com ([209.85.220.52]:50199 "EHLO mail-pa0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751915AbaEGOwX (ORCPT ); Wed, 7 May 2014 10:52:23 -0400 Received: by mail-pa0-f52.google.com with SMTP id kx10so1311901pab.11 for ; Wed, 07 May 2014 07:52:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=2O4x+Q+qqXzH+8f5T40BtVTz4PtF4VK7dzZ4HP7f2kQ=; b=cHv3U1ccRU1tt3WyJXofdlhVRw8wpqnJH0+DeQmtOFd3wFncqZIdzJMo1jw8/xxG5a /spCvZfRznXAYnABTufujUm698tAobTAlMLNaUhGdpA+Sdo+cEJIjRm468seK6DdCWKM NXbh2ha8R6qNcEjXrrpSCPtojxhCPzc5U3zqttYN9mbDk/9e8mGLtxBW54GmtNqSmc/h YVVoKAUSutAjX8VwEovoDzkvVsH0sGJJuOmA/YE15Ry0G95slAjw0t8nUdKYAzT7vn4+ b6UjGD0UFxZB6gQRkDXZSDNx/hf/Ce9QXto+HpDuYh513XqcLVhwAbU5xWyXsQpxGpeF 40Lw== X-Received: by 10.66.246.229 with SMTP id xz5mr19791917pac.119.1399474342569; Wed, 07 May 2014 07:52:22 -0700 (PDT) Received: from lanh ([115.73.204.3]) by mx.google.com with ESMTPSA id tf10sm3632499pbc.70.2014.05.07.07.52.19 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 07 May 2014 07:52:21 -0700 (PDT) Received: by lanh (sSMTP sendmail emulation); Wed, 07 May 2014 21:52:23 +0700 X-Mailer: git-send-email 1.9.1.346.ga2b5940 In-Reply-To: <1399474320-6840-1-git-send-email-pclouds@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: This is not used anywhere yet. But the goal is to compare quickly if a .gitignore file has changed when one has SHA-1 of the old .gitignore. --- dir.c | 51 ++++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 44 insertions(+), 7 deletions(-) diff --git a/dir.c b/dir.c index c081754..e2edeca 100644 --- a/dir.c +++ b/dir.c @@ -466,7 +466,8 @@ void add_exclude(const char *string, const char *base, x->el = el; } -static void *read_skip_worktree_file_from_index(const char *path, size_t *size) +static void *read_skip_worktree_file_from_index(const char *path, size_t *size, + unsigned char *sha1) { int pos, len; unsigned long sz; @@ -485,6 +486,8 @@ static void *read_skip_worktree_file_from_index(const char *path, size_t *size) return NULL; } *size = xsize_t(sz); + if (sha1) + hashcpy(sha1, active_cache[pos]->sha1); return data; } @@ -525,11 +528,14 @@ static void trim_trailing_spaces(char *buf) buf[last_space] = '\0'; } -int add_excludes_from_file_to_list(const char *fname, - const char *base, - int baselen, - struct exclude_list *el, - int check_index) +static int add_excludes(const char *fname, + const char *base, + int baselen, + struct exclude_list *el, + int check_index, + unsigned char *sha1, + struct stat_data *ref_stat, + const unsigned char *ref_sha1) { struct stat st; int fd, i, lineno = 1; @@ -543,9 +549,13 @@ int add_excludes_from_file_to_list(const char *fname, if (0 <= fd) close(fd); if (!check_index || - (buf = read_skip_worktree_file_from_index(fname, &size)) == NULL) + (buf = read_skip_worktree_file_from_index(fname, &size, sha1)) == NULL) return -1; + if (ref_stat) + memset(ref_stat, 0, sizeof(*ref_stat)); if (size == 0) { + if (sha1) + hashcpy(sha1, EMPTY_BLOB_SHA1_BIN); free(buf); return 0; } @@ -556,6 +566,10 @@ int add_excludes_from_file_to_list(const char *fname, } else { size = xsize_t(st.st_size); if (size == 0) { + if (ref_stat) + fill_stat_data(ref_stat, &st); + if (sha1) + hashcpy(sha1, EMPTY_BLOB_SHA1_BIN); close(fd); return 0; } @@ -567,6 +581,21 @@ int add_excludes_from_file_to_list(const char *fname, } buf[size++] = '\n'; close(fd); + if (sha1) { + int pos; + if (!ref_stat && + (pos = cache_name_pos(fname, strlen(fname))) >= 0 && + !ce_stage(active_cache[pos]) && + ce_uptodate(active_cache[pos])) + hashcpy(sha1, active_cache[pos]->sha1); + else if (ref_stat && !match_stat_data(ref_stat, &st)) { + if (ref_sha1 != sha1) /* support ref_sha1 == sha1 */ + hashcpy(sha1, ref_sha1); + } else + hash_sha1_file(buf, size, "blob", sha1); + } + if (ref_stat) + fill_stat_data(ref_stat, &st); } el->filebuf = buf; @@ -585,6 +614,14 @@ int add_excludes_from_file_to_list(const char *fname, return 0; } +int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen, + struct exclude_list *el, int check_index) +{ + return add_excludes(fname, base, baselen, el, check_index, + NULL, NULL, NULL); +} + + struct exclude_list *add_exclude_list(struct dir_struct *dir, int group_type, const char *src) { -- 1.9.1.346.ga2b5940