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#!/bin/bash
#Filename:format_table.sh
#Revision:0.2
#Date:2017/8/23
#Author:sunlinyao
#Description:shell下格式化输出为表格样式
#使用时首先需要调用set_title对表格初始化
#追加表格数据可使用append_cell和append_line，append_cell不会自动换行，换行必须要使用append_line
#append_line参数是可选的，并且会自动对之前的append_cell换行
#使用output_table可输出表格
#暂不支持修改/插入/删除数据
#可使用. format_table.sh 或者source format_table.sh来引入改脚本的函数
#"(*)"会自动着色为红色字体
#注：以Centos6.5标准写的，在其他系统上可能结果有差异，欢迎大家测试使用以及反馈八阿哥
# [root@virnet ~]# bash format_table.sh
# +----+------+---------------+
# |ID|Name|Creation time|
# +----+------+---------------+
# |1|TF|2017-01-01|
# |2||2017-01-02(*)|
# |3|SF||
# |3|SF|(*)|
# |4|TS||
# |5|||
# +----+------+---------------+sep="#"
function append_cell(){
#对表格追加单元格
#append_cell col0 "col 1" ""
#append_cell col3
local i
for i in "$@"
do
line+="|$i${sep}"
done
}
function check_line(){
if [ -n "$line" ]
then
c_c=$(echo $line|tr -cd "${sep}"|wc -c)
difference=$((${column_count}-${c_c}))
if [ $difference -gt 0 ]
then
line+=$(seq -s " " $difference|sed -r s/[0-9]\+/\|${sep}/g|sed -rs/${sep}\ /${sep}/g)
fi
content+="${line}|\n"
fi}
function append_line(){
check_line
line=""
local i
for i in "$@"
do
line+="|$i${sep}"
done
check_line
line=""
}
function segmentation(){
local seg=""
local i
for i in $(seq $column_count)
do
seg+="+${sep}"
done
seg+="${sep}+\n"
echo $seg
}
function set_title(){
#表格标头，以空格分割，包含空格的字符串用引号，如
#set_title Column_0 "Column 1" "" Column3
[ -n "$title" ] && echo "Warring:表头已经定义过,重写表头和内容"
column_count=0
title=""
local i
for i in "$@"
do
title+="|${i}${sep}"
let column_count++
done
title+="|\n"
seg=`segmentation`
title="${seg}${title}${seg}"
content=""
}
function output_table(){
if [ ! -n "${title}" ]
then
echo "未设置表头，退出" && return 1
fi
append_line
table="${title}${content}$(segmentation)"
echo -e $table|column -s "${sep}" -t|awk '{if($0 ~ /^+/){gsub(" ","-",$0);
print $0}else{gsub("\\(\\*\\)","\033[31m(*)\033[0m",$0);
print $0}}'}if [ "$SHLVL" -eq "2" ]
then
set_title ID Name "Creation time"
append_line 1 "TF" "2017-01-01"
append_cell 2 "" "2017-01-02(*)"
append_line
append_cell 3 "SF"
append_line
append_cell 3 "SF" "(*)"
append_line 4 "TS"
append_cell 5
output_table
fi
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