使用方法

脚本指定了惟一一个参数，该参数可以是某个文件的路径或者某个文件夹的路径

./codenum.sh file/dir

思路

输入指定路径，遍历路径下的文件或文件夹，对文件直接统计行数，对文件夹进行遍历文件，然后再统计

源码

#!/bin/bash
#   代码统计工具
#   使用: script file/dir
#   author luodongseu

echo "------------------------Welcome!----------------------"

#传入的参数
#文件路径
FILE_PATH=$1

#全局变量
#统计对象类型: 1为文件;2为目录
typeset FILE_TYPE=1
#存储行数
typeset TOTAL_LINES=0
#存储文件数量
typeset TOTAL_FILE_NUM=0
#空行数量
typeset TOTAL_BLANK_LINES=0
#注释行数量
typeset TOTAL_COMMENT_LINES=0
#有效代码行数
typeset TOTAL_CODE_LINES=0

#日志文件
LOG_FILE=$(cd $(dirname $0);pwd)/calnum.out
echo "" > ${LOG_FILE}

########################################################
#   打印日志函数
########################################################
function log
{
    echo "[`date +"%Y-%m-%d %H:%M:%S"`]" "[$1]" $2
    echo "[`date +"%Y-%m-%d %H:%M:%S"`]" "[$1]" $2 >> ${LOG_FILE}
}

########################################################
#   判断统计对象时文件还是目录
########################################################
function check_is_dir
{
    if [ -f ${FILE_PATH} ];then
        # 是一个文件
        FILE_TYPE=1
    elif [ -d ${FILE_PATH} ];then
        # 是一个目录
        FILE_TYPE=2
    else
        # 不存在文件或目录
        log "EORROR" "File or dir is not exist!"    
        exit 1
    fi
}

########################################################
#   统计总行号
########################################################
function cal_total_num
{
    typeset TMP_TYPE=$1
    typeset TMP_PATH=$2
    typeset CUR_DIR="./"
    
    if [ ${TMP_TYPE} -eq 1 ];then
        # 单个文件统计
        
        ## 统计文件数量
        TOTAL_FILE_NUM=$(expr ${TOTAL_FILE_NUM} + 1)
        
        ## 统计行数
        typeset current_file_lines=$(cat ${TMP_PATH} | grep "" | wc -l)
        TOTAL_LINES=$(expr ${TOTAL_LINES} + ${current_file_lines})
        log "DEBUG" "File ${TMP_PATH} LINES is ${current_file_lines}."
        #log "DEBUG" "Current TOTAL_LINES is ${TOTAL_LINES}."
        
        ## 统计空白行
        typeset current_blank_lines=$(cat ${TMP_PATH} | grep -rn "^\s*$" | wc -l)
        TOTAL_BLANK_LINES=$(expr ${TOTAL_BLANK_LINES} + ${current_blank_lines})
        log "DEBUG" "File ${TMP_PATH} BLANK_LINES is ${current_blank_lines}."
        #log "DEBUG" "Current TOTAL_BLANK_LINES is ${TOTAL_BLANK_LINES}."
        
        ## 统计注释行
        typeset current_comment_lines=$(cat ${TMP_PATH} | grep -rn "^\s*#.*$" | wc -l)
        TOTAL_COMMENT_LINES=$(expr ${TOTAL_COMMENT_LINES} + ${current_comment_lines})
        log "DEBUG" "File ${TMP_PATH} COMMENT_LINES is ${current_comment_lines}."
        #log "DEBUG" "Current TOTAL_COMMENT_LINES is ${TOTAL_COMMENT_LINES}."
        
        ## 统计有效代码行
        typeset current_code_lines=$(expr ${current_file_lines} - ${current_blank_lines} - ${current_comment_lines})
        TOTAL_CODE_LINES=$(expr ${TOTAL_CODE_LINES} + ${current_code_lines})
        log "DEBUG" "File ${TMP_PATH} CODE_LINES is ${current_code_lines}."
        #log "DEBUG" "Current TOTAL_CODE_LINES is ${TOTAL_CODE_LINES}."
    else
        # 目录递归遍历
        for line in $(ls ${TMP_PATH})
        do
            if [ -f ${TMP_PATH}/$line ];then
                # 文件
                cal_total_num 1 ${TMP_PATH}/$line
            else
                # 目录
                cal_total_num 2 ${TMP_PATH}/$line
            fi
        done
    fi
}

########################################################
#   输出最终的行数结果
########################################################
function output_lines
{
    printf "%-20s%-30s%-20s%-40s\n" "Step" "Name" "Value" "Comments"
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_FILE_NUM" ${TOTAL_FILE_NUM} "#文件总数"
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_LINES" ${TOTAL_LINES} "#所有行和"
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_BLANK_LINES" ${TOTAL_BLANK_LINES} "#空白行和"
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_COMMENT_LINES" ${TOTAL_COMMENT_LINES} "#注释行和"
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_CODE_LINES" ${TOTAL_CODE_LINES} "#代码行和"
    # 输出到日志文件
    printf "%-20s%-30s%-20s%-40s\n" "Step" "Name" "Value" "Comments" >> ${LOG_FILE}
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_FILE_NUM" ${TOTAL_FILE_NUM} "#文件总数" >> ${LOG_FILE}
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_LINES" ${TOTAL_LINES} "#所有行和" >> ${LOG_FILE}
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_BLANK_LINES" ${TOTAL_BLANK_LINES} "#空白行和" >> ${LOG_FILE}
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_COMMENT_LINES" ${TOTAL_COMMENT_LINES} "#注释行和" >> ${LOG_FILE}
    printf "%-20s%-30s%-20s%-40s\n" "RESULT" "TOTAL_CODE_LINES" ${TOTAL_CODE_LINES} "#代码行和" >> ${LOG_FILE}
}

check_is_dir
cal_total_num ${FILE_TYPE} ${FILE_PATH}
output_lines

echo "------------------------End----------------------"