资讯专栏INFORMATION COLUMN

svn pre-commit hook两三事

wenzi / 3835人阅读

摘要:原文请猛戳说起折腾这件事还是在去年年底。我厂向来木有等流程,全赖老司机们各种强力输出。所以我便在里用检查语法错误的代码,把这种坑队友的事扼杀在摇篮里。虽然不及那么强大,但也基本够用了。

原文请猛戳:
http://galoisplusplus.coding.me/blog/2016/03/12/svn-precommit-hook/

说起折腾svn hook这件事还是在去年年底。我厂向来木有Code Review等Quality Assurance流程,全赖老司机们各种强力输出。而当时我们项目的不少老司机要么去了其他部门要么离职了,新来的小鲜肉码农们似乎对Version Control一无所知。别的不说,单是commit不写comment,便让大家头疼不已,每次在merge时都得额外花不少时间来搞清楚commit的具体内容。虽然我自从投奔git阵营后基本都是用git svn,对svn生疏已久,但觉得加个svn提交限制应非难事,所以便额外花了点时间写了个pre-commit hook,对commit的comment中的非空白字符做计数,少于一定字数的不让提交。万万没想到,当时让SA大大部署上svn服务器后,就有人commit了一个“再试一下”orz...当时我的内心是崩溃的...在推上围脖上吐槽后不久,众位大神各种支招,例如巨硬的泉哥说再搞个语义分析器666...不过最受用的还是根爷所提到的用cpplint检查代码是否符合编码规范、是否能够编译通过。恰好那段时间小鲜肉们提交了一些带有语法错误的lua代码,偶们又木有review制度,结果不写程序的策划大大们svn up下来后——「什么鬼?肿么不能运行了?!好拙计啊!AAA,快来看bug啊!BBB,SOS!」——导致别人不得不停下手头的活、额外花时间排查。所以我便在pre-commit hook里用luac检查语法错误的代码,把这种坑队友的事扼杀在摇篮里。虽然不及cpplint那么强大,但也基本够用了。最近一次改这个脚本是因为前段时间有个小鲜肉做了一张4096x4096的图集,而cocos2d-x文档里写得清清楚楚,大多数手机所支持的最大纹理尺寸其实只有2048x2048...卧槽,干得漂亮啊,一上线就造成了不少crash...木有review制度好可啪,在发现这个问题之前其他人一直毫不知情...所以我还是干脆在svn hook里再加个限制吧~

好了,不碎碎念了,这个gist便是我折腾的svn hook,主要做了这么几项功能:

commit message非空白长度检查

lua语法检查

禁止添加文件名带空格的文件

禁止被配在PROHIBITED_FILES的文件被修改

确保图片尺寸小于2048x2048

#!/bin/sh

# PRE-COMMIT HOOK
#
# The pre-commit hook is invoked before a Subversion txn is
# committed.  Subversion runs this hook by invoking a program
# (script, executable, binary, etc.) named "pre-commit" (for which
# this file is a template), with the following ordered arguments:
#
#   [1] REPOS-PATH   (the path to this repository)
#   [2] TXN-NAME     (the name of the txn about to be committed)
#
#   [STDIN] LOCK-TOKENS ** the lock tokens are passed via STDIN.
#
#   If STDIN contains the line "LOCK-TOKENS:
" (the "
" denotes a
#   single newline), the lines following it are the lock tokens for
#   this commit.  The end of the list is marked by a line containing
#   only a newline character.
#
#   Each lock token line consists of a URI-escaped path, followed
#   by the separator character "|", followed by the lock token string,
#   followed by a newline.
#
# The default working directory for the invocation is undefined, so
# the program should set one explicitly if it cares.
#
# If the hook program exits with success, the txn is committed; but
# if it exits with failure (non-zero), the txn is aborted, no commit
# takes place, and STDERR is returned to the client.   The hook
# program can use the "svnlook" utility to help it examine the txn.
#
# On a Unix system, the normal procedure is to have "pre-commit"
# invoke other programs to do the real work, though it may do the
# work itself too.
#
#   ***  NOTE: THE HOOK PROGRAM MUST NOT MODIFY THE TXN, EXCEPT  ***
#   ***  FOR REVISION PROPERTIES (like svn:log or svn:author).   ***
#
#   This is why we recommend using the read-only "svnlook" utility.
#   In the future, Subversion may enforce the rule that pre-commit
#   hooks should not modify the versioned data in txns, or else come
#   up with a mechanism to make it safe to do so (by informing the
#   committing client of the changes).  However, right now neither
#   mechanism is implemented, so hook writers just have to be careful.
#
# Note that "pre-commit" must be executable by the user(s) who will
# invoke it (typically the user httpd runs as), and that user must
# have filesystem-level permission to access the repository.
#
# On a Windows system, you should name the hook program
# "pre-commit.bat" or "pre-commit.exe",
# but the basic idea is the same.
#
# The hook program typically does not inherit the environment of
# its parent process.  For example, a common problem is for the
# PATH environment variable to not be set to its usual value, so
# that subprograms fail to launch unless invoked via absolute path.
# If you"re having unexpected problems with a hook program, the
# culprit may be unusual (or missing) environment variables.
# 
# Here is an example hook script, for a Unix /bin/sh interpreter.
# For more examples and pre-written hooks, see those in
# the Subversion repository at
# http://svn.apache.org/repos/asf/subversion/trunk/tools/hook-scripts/ and
# http://svn.apache.org/repos/asf/subversion/trunk/contrib/hook-scripts/

LOG="/tmp/svn.log"
touch ${LOG}

REPOS="$1"
TXN="$2"
echo "REPOS: $REPOS" > ${LOG}
echo "TXN: $TXN" >> ${LOG}

SVNLOOK=""

# lua compiler
LUAC=""
# lua file extension
LUA_EXT="lua"
# png file extension
PNG_EXT="png"

MSG_MIN_CHAR_NUM=3

MAX_PNG_SIZE=2048

PROHIBITED_FILES=(
)

TMP_DIR="/tmp/svn"
if [[ -d ${TMP_DIR} ]]; then
    rm -r ${TMP_DIR}
fi
mkdir -p ${TMP_DIR}

function check_lua_syntax {
local lua_file=$1
echo `${LUAC} ${lua_file} 2>&1`
}

function create_file {
local file_name=$1
# Create tmp file and copy content
tmp_file="${TMP_DIR}/${file_name}"
mkdir -p "$(dirname "${tmp_file}")" && touch "${tmp_file}"
${SVNLOOK} cat -t "${TXN}" "${REPOS}" "${file_name}" > ${tmp_file}
}

# Make sure that the log message contains some text.
commit_msg=`$SVNLOOK log -t "$TXN" "$REPOS" | sed "s/[[:space:]]//g"`
echo ${commit_msg} >> ${LOG}
if [[ `echo ${commit_msg} | wc -c` -lt ${MSG_MIN_CHAR_NUM} ]]; then
    echo "Please write a meaningful comment when committing" 1>&2
    exit 1
fi

changed_info_str=`${SVNLOOK} changed -t "${TXN}" "${REPOS}"`
IFS=$"
" read -rd "" -a changed_infos <<<"${changed_info_str}"

lua_error_msg=""
png_error_msg=""
for changed_info in "${changed_infos[@]}"; do
    # Prevent commiting file that contains space in its filename
    echo ${changed_info} >> ${LOG}
    operation=`echo ${changed_info} | awk "{print $1}"`
    if [[ ${operation} = "A" ]] && [[ `echo ${changed_info} | awk "{print NF}"` -gt 2 ]]; then
        echo "Please do not commit file that contains space in its filename!" 1>&2
        exit 1
    fi
    file_name=`echo ${changed_info} | awk "{print $2}"`
    echo "operation: ${operation}, file: ${file_name}, ext: ${ext}" >> ${LOG}

    # Check prohibit-commit files
    for prohibited_file in ${PROHIBITED_FILES[@]}; do
        if [[ ${file_name} = ${prohibited_file} ]]; then
            echo "${file_name} is not allowed to be changed!" 1>&2
            exit 1
        fi
    done

    ext=`echo ${file_name} | awk -F"." "{print $NF}"`

    if [[ ${operation} = "U" ]] || [[ ${operation} = "A" ]]; then
        tmp_file="${TMP_DIR}/${file_name}"

        # Check lua syntax
        if [[ ${ext} = ${LUA_EXT} ]]; then
            echo "Check syntax of ${tmp_file}" >> ${LOG}
            create_file ${file_name}
            error_msg=`check_lua_syntax ${tmp_file}`
            if [[ `echo ${error_msg} | sed "s/
//g"` != "" ]]; then
                lua_error_msg="${lua_error_msg}
${error_msg}"
            fi
        fi

        # Check file size
        if [[ ${ext} = ${PNG_EXT} ]]; then
            create_file ${file_name}
            png_info=`file ${tmp_file} | sed "s/,//g"`
            png_width=`echo ${png_info} | awk "{print $5}" | bc`
            png_height=`echo ${png_info} | awk "{print $7}" | bc`
            if [[ ${png_width} -gt ${MAX_PNG_SIZE} ]] || [[ ${png_height} -gt ${MAX_PNG_SIZE} ]]; then
                png_error_msg="${png_error_msg}
${file_name} is too large: ${png_width} x ${png_height}"
            fi
        fi
    fi
done

rm -r ${TMP_DIR}

if [[ ${lua_error_msg} != "" ]] || [[ ${png_error_msg} != "" ]]; then
    if [[ ${lua_error_msg} != "" ]]; then
        echo "lua error: ${lua_error_msg}" >> ${LOG}
        echo "Please fix the error in your lua program:${lua_error_msg}" 1>&2
    fi

    if [[ ${png_error_msg} != "" ]]; then
        echo "png error: ${png_error_msg}" >> ${LOG}
        echo "Please do not commit pictures which are larger than 2048 x 2048:${png_error_msg}" 1>&2
    fi

    exit 1
fi

# Check that the author of this commit has the rights to perform
# the commit on the files and directories being modified.
# commit-access-control.pl "$REPOS" "$TXN" commit-access-control.cfg || exit 1

# All checks passed, so allow the commit.
exit 0

PS. 聪哥说作为一位开发去搞svn hook怕被公司的其他开发喷越权管了运维的事,我厂倒是不存在这种问题的——人少活多时间紧,啥活都得揽啊,例如我一位舍友兼同事的大神以前开发手游可是客户端、服务器、策划、切图全都一人搞定,就差自己出美术图和特效了。最近我也在像运维一样写脚本自动化处理某些项目文件,发现我们开发各种混乱啊有木有!例如路径带空格,我的一些awk脚本就血崩了——我在以上的hook脚本里也有同样的问题,其实把列计数方式改一下,例如$7改成${NF-4},可以避免这种问题——而且还要把带空格的路径用sed替换成转义后的字符串。不过这种情况还算好的,还有些人用的单词有拼写错误,要是全错了倒也罢了,脚本hold得住,问题是有的对有的错...偶只能弃疗了...

文章版权归作者所有,未经允许请勿转载,若此文章存在违规行为,您可以联系管理员删除。

转载请注明本文地址:https://www.ucloud.cn/yun/7955.html

相关文章

  • PHP代码自动检测(git/svn集成PHP_CodeSniffer)

    摘要:背景在公司开发的时候,每次不管还是提交代码的时候都会对代码进行简单的自动检测。并且明确告知文档不可能的。猜想应该自动代码检测肯定是集成在工程代码所在的服务端是最好的。写在最后通过了解代码的自动检测,发现了很多问题。 背景 在公司开发的时候,每次不管svn还是git提交代码的时候都会对代码进行简单的自动检测。检查不了代码逻辑,但是最起码能保证整体的编码格式保持一致。这个功能还是挺有用的,...

    CoderDock 评论0 收藏0
  • 不会写shell的程序员照样是好前端——用Node.JS实现git hooks

    摘要:当退出的错误码不为的时候,表示失败,操作终止,否则操作继续。执行命令进行测试,如果测试全部通过的话,退出,错误码为,否则错误码为,同样退出。这样虽然没有解决不会随着仓库移动的问题,但也提供了一种在项目组里通用一套的方案。 git hooks想必很多攻城狮都不陌生,官方对于hooks有详细的文档,也有站内网友的文章Git Hooks (1):介绍,GIt Hooks (2):脚本分类,说...

    BWrong 评论0 收藏0

发表评论

0条评论

最新活动
阅读需要支付1元查看
<