#!/bin/bash

# --------------------------------------------------------------------------- #
# 獲取文件名后綴
# Parameter1: 文件名
# output: Yes
# return: None
# --------------------------------------------------------------------------- #
function FileSuffix() {
    local filename="$1"
    if [ -n "$filename" ]; then
        echo "${filename##*.}"
    fi
}

# --------------------------------------------------------------------------- #
# 獲取文件名前綴
# Parameter1: 文件名
# output: Yes
# return: None
# --------------------------------------------------------------------------- #
function FilePrefix() {
    local filename="$1"
    if [ -n "$filename" ]; then
        echo "${filename%.*}"
    fi
}

# --------------------------------------------------------------------------- #
# 判斷文件后綴是否是指定后綴
# Parameter1: 文件名
# parameter2: 后綴名
# output: None
# return: 0: 表示文件后綴是指定后綴；1: 表示文件后綴不是指定后綴
# --------------------------------------------------------------------------- #
function IsSuffix() {
    local filename="$1"
    local suffix="$2"
    if [ "$(FileSuffix ${filename})" = "$suffix" ]; then
        return 0
    else
        return 1
    fi
}

file="demo.txt"

IsSuffix ${file} "txt"
ret=$?

if [  $ret -eq 0 ]; then
    echo "the suffix of the ${file} is txt"
fi

file=$1
if [ "${file##*.}"x = "css"x ]||[ "${file##*.}"x = "js"x ];then

? ? do something
fi

for n in `find . -name "*.py" -o -name "*.sh" -o -name "*.css" -o -name "*.js" -o -name "*.html"`; do

? ?something
done