MAC环境下，使用Beyond Compare命令行生成两个文件夹差异的html，按目录递归生成。

#1. 创建compare
#2. 创建compare/old
#3. compare/new
#4. sh tree.sh ~/Desktop/compare
#5. 生成 ~/Desktop/report

#环境初始化
function init()
{
    echo "#########环境初始化#########################"

    WORK_DIR=$(cd $(dirname $0); pwd)
    #echo $WORK_DIR

    BasePath=$1
    BasePathLength=${#BasePath}

    #命令行是否/结尾问题
    FINAL=${BasePath:0-1}
    #echo "FINAL:"$FINAL
    #echo "BasePath...:"$BasePath
    if [ ${FINAL} == "/" ]; then
        #命令行是/结尾
        BasePath=${BasePath:0:$BasePathLength-1}
        #echo "BasePath......:"$BasePath
        BaseOldPath="$1old"
        BaseNewPath="$1new"
        echo "YES"
    else
        #命令行否/结尾
        BaseOldPath="$1/old"
        BaseNewPath="$1/new"
        echo "NO"
    fi

    BaseReportPath=$WORK_DIR/report

    #生成report目录
    if [ ! -d $BaseReportPath ]; then
        echo "新建目录"
        mkdir $BaseReportPath
    else
        echo "目录存在，重新生成"
        rm -rf $BaseReportPath
        mkdir $BaseReportPath
    fi

    #检查目录
    if [ -d $BaseReportPath ]; then
        echo "report目录创建成功"
    else
        echo "report目录创建失败,退出"
        exit
    fi

    BasePatchPath=$WORK_DIR/diff_to_html



    echo "强制写入比对配置文件"

    echo "text-report layout:side-by-side &
      options:display-all,line-numbers,display-context &
      output-to:%3 output-options:html-color %1 %2" > $BasePatchPath

    if [ -f $BasePatchPath ]; then
        echo "临时写入比对配置文件成功"
    else
        echo "临时写入比对配置文件失败,退出"
        exit
    fi

    BaseEmptyPath=$WORK_DIR/empty
    echo "" > $BaseEmptyPath


    echo "##########路径参数###########"
    echo "BasePath...............:$BasePath"
    echo "BaseOldPath............:$BaseOldPath"
    echo "BaseNewPath............:$BaseNewPath"
    echo "BaseReportPath.........:$BaseReportPath"
    echo "BasePatchPath..........:$BasePatchPath"
    echo "BaseEmptyPath..........:$BaseEmptyPath"
    echo "#####################"

    echo "#########环境初始化 ok############################"


}

#目录检查
# BasePath...............:~/Desktop/compare
# BaseOldPath............:~/Desktop/compare/old
# BaseNewPath............:~/Desktop/compare/new

function checkCompareDir(){

echo "##############checkCompareDir start########################"
 if [ ! -d $BasePath ]; then
    echo $BasePath"目录不存在，请检查！"
    exit 0
 fi

 if [ ! -d $BaseOldPath ]; then
    echo $BaseOldPath"子目录不存在，请检查！"
    exit 0
 fi

 if [ ! -d $BaseNewPath ]; then
    echo $BaseNewPath"子目录不存在，请检查！"
    exit 0
 fi   

echo "##############checkCompareDir end########################"

}

function listFiles()
{
    #1st param, the dir name
    for file in `ls $1`;
    do
        #echo "path....:$1/$file"
            if [ -d "$1/$file" ]; then
                # echo "$2$file"
                # echo "$1/$file"
                #递归

                listFiles "$1/$file"
            else
                
                #比较文件A
                compareFileAPath=$1/$file
                #echo "compareFileAPath..............:$compareFileAPath"
                if [[ "${compareFileAPath}" =~ $BaseNewPath ]]; then
                    #echo "compareFileAPath is new"
                    compareFileBPath=$compareFileAPath
                    compareFileAPath=${compareFileBPath/$BaseNewPath/$BaseOldPath}

                    if [ ! -d $compareFileAPath ]; then
                        echo "A path不存在"
                        fulldir=$1
                        #临时html路径，compareFileAPath替换BaseOldPath赋值BaseReportPath
                        tempHtmlPath=${compareFileBPath/$BaseNewPath/$BaseReportPath}
                        # echo "tempHtmlPath....................:$tempHtmlPath"

                        #html文件路径,tempHtmlPath拼接.html
                        htmlPath=$tempHtmlPath.html
                        # echo "htmlPath......................:$htmlPath"

                        #替换生成Html文件对应的目录
                        htmldir=${fulldir/$BaseNewPath/$BaseReportPath}
                        #echo "htmldir......................:$htmldir"
                        
                        #如果Html文件夹不存在，创建对应文件夹
                        if [ ! -d $htmldir ]; then
                            #echo "create.....:$htmldir"
                            mkdir $htmldir
                        fi
                    fi

                else

                    echo "#old############"
                    fulldir=$1
                    # echo "fulldir..............:$fulldir"
                    
                    #比较文件B，compareFileAPath替换BaseOldPath赋值BaseNewPath
                    compareFileBPath=${compareFileAPath/$BaseOldPath/$BaseNewPath}
                    # echo "compareFileBPath..............:$compareFileBPath"

                    #临时html路径，compareFileAPath替换BaseOldPath赋值BaseReportPath
                    tempHtmlPath=${compareFileBPath/$BaseNewPath/$BaseReportPath}
                    # echo "tempHtmlPath....................:$tempHtmlPath"

                    #html文件路径,tempHtmlPath拼接.html
                    htmlPath=$tempHtmlPath.html
                    # echo "htmlPath......................:$htmlPath"

                    #替换生成Html文件对应的目录
                    htmldir=${fulldir/$BaseNewPath/$BaseReportPath}
                    # echo "htmldir......................:$htmldir"
                    
                    #如果Html文件夹不存在，创建对应文件夹
                    if [ ! -d $htmldir ]; then
                        echo "create.....:$htmldir"
                        mkdir $htmldir
                    fi
                fi


                echo "#################file compare start#####################"

                if [ -f $compareFileBPath ]; then
                    #echo "compare aciton...B存在:$compareFileBPath"
                        if [ ! -f $compareFileAPath ]; then
                            echo "#################NEW#####################"
                            bcompare -silent @$BasePatchPath $BaseEmptyPath $compareFileBPath $htmlPath
                        else  
                            #A存在
                            echo "#################UPDATE#####################"
                            #echo "compare aciton...$compareFileAPath"
                            # echo "compareFileAPath.......:$compareFileAPath"
                            # echo "compareFileBPath.......:$compareFileBPath"
                            if [[ "${compareFileAPath}" =~ $BaseOldPath ]]; then
                                bcompare -silent @$BasePatchPath $compareFileAPath $compareFileBPath $htmlPath
                            fi
                        fi
                fi
                echo "###################file compare end#########################"

                


            fi
    done
}

#清理函数
function clear(){
    #echo "删除比对配置文件"
    rm -rf $BasePatchPath
    rm -rf $BaseEmptyPath 
}

#######main run

init $1

checkCompareDir

listFiles $BasePath

clear