获取git两次commit变化的文件

git-get-pull-files.sh

#!/bin/sh

#-------------------------------------------------
# 本脚步实现git的不同commit间的增量文件提取，使用说明：
# wkp 工作目录 默认值当前目录（以“/”结尾）
# cpp 要复制的文件前缀 默认值当前目录（以“/”结尾）
# upn 待更新的临时文件夹 默认值update_tmp
# commit 指定git commit进行比较
# 
# author: [email protected]
# update: 2016-05-12 23:46:37
#-------------------------------------------------

# git 工作目录
#wkp="/root/.jenkins/jobs/tw/workspace/"
if [ ! -n "$wkp"  ]; then
    # for jenkins
    if [ -n "$WORKSPACE"  ]; then
        wkp=$WORKSPACE/
    else
        wkp=`pwd`/
    fi
fi
#wkp=${WORKSPACE}/
if [ ! -s ${wkp} ]; then
    echo "can not found workspace (${wkp}), program exit"
    exit 1
fi
echo "workspace ${wkp}"

# 需更新的部分
if [ ! -n "$cpp"  ]; then
    #cpp="$wkp"
    #cpp="src/main/webapp/"
    cpp="./"
fi
echo "update dir ${cpp}"
#cpp=${wkp}${cpp}

# 指定增量包开始位置
if [ $commit ] && [ "$commit" != "" ] ; then
    echo "use commit ${commit}"
    lp="$commit"
fi

# 更新临时文件夹名称
if [ ! -n "$upn"  ]; then
    upn="update_tmp"
fi
upnP="${upn}/"
updateW="${wkp}${upnP}"
echo "update tmp ${upnP}"

cd $wkp

update="true"
deleteW="false"

fileP="${wkp}update_lastPull"
echo "update key update_lastPull"
if [ ! -s ${fileP} ]; then
    update="false"
fi
echo "update model: ${update}" 

if [ ! -n "$lp"  ]; then
    lp=`cat ${fileP}`
fi
hd=`cat ${wkp}.git/HEAD`
#if [[ $hd == ref:* ]]; then
#    hd=`cat ${wkp}.git/${hd:5}`
#fi
if [ "$lp" = "$hd" ]; then
    echo "no file change"
    rm -rf ${upn}_${lp}
    exit 0
fi

if [ "$update" = "true" ]; then
    if [ -s ${updateW} ]; then
        llp="${upn}_${lp}"
        echo "backup ${upn} to ${llp}"
        if [ -s ${wkp}${llp}  ]; then
            rm -rf ${llp}
        fi
        # 是否保留备份上次的增量文件,存在but变量则备份
        if [ $but ] ; then
            mv -f $upn ${llp}
        else
            rm -rf $upn
        fi

    fi
    echo "create $upnP"
    mkdir -p $updateW
    sp="\t"
    if [ "$cpp" != "./" ] ; then
        sp="$sp$cpp"
    fi
    td=`git diff --diff-filter=ADM --name-status $lp -- $cpp | awk -F"$sp" '
        {
          if ($1 == "D") { 
            { print "echo \""$2"\" >> "uw"delFiles.txt;" }
          } else {
            { print "mkdir -p \"\`dirname \""uw$2"\"\`\";" }
            { print "cp -f \""uc$2"\" \""uw$2"\";" }
          } 
        }
    ' uw="${upn}/" uc="$cpp"`
    echo "copy files to ${upnP}"
    echo $td
    eval $td
fi


echo "update to commit $hd"

if [ "$update" = "false" ]; then
    echo "create $updateW"
    mkdir -p $updateW
    if [ "$cpp" = "./" ] ; then
        cp -R `ls -A | grep -v ".git\|${upn}"` $updateW
        #cp -R `ls -A | grep -vE ".git|${upn}"` $updateW
    else
        cp -R ${cpp}* $upnP
        #cp -R ${cpp}* $updateW
    fi
fi

#echo -n "$hd" > $fileP
echo "$hd" > $fileP

if [ "$deleteW" = "true" ]; then
    echo "delete $updateW"
    rm -rf $updateW
fi

# for jenkins
exit 0