转换相对URL绝对URL [英] Convert relative URL to absolute URL
本文介绍了转换相对URL绝对URL的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
输入:
- 基础网址:
www.example.com/1/2/index.php
- 相对网址:
../../的index.php
- Base URL:
www.example.com/1/2/index.php
- Relative URL:
../../index.php
输出:
- 绝对网址:
www.example.com/index.php
- Absolute URL:
www.example.com/index.php
这将是完美的,它会使用来完成的 SED
It would be perfect, of it would be done using sed.
据我了解,这个正则表达式应该删除一个 somefolder /
在URL中的每个 ../
。
As I understand, this regex should delete one somefolder/
in for every ../
in the URL.
推荐答案
如果你唯一的要求就是打开 ..
进入上一级,那么这是一种可能解。它不使用常规的前pressions或sed或为此事JVM)
If your only requirement is to turn ..
into "up one level" then this is a possible solution. It doesn't use regular expressions or sed, or a JVM for that matter ;)
#!/bin/bash
domain="www.example.com"
origin="1/2/3/4/index.php"
rel="../../index.php"
awk -v rel=$rel -v origin=$origin -v file=$(basename $rel) -v dom=$domain '
BEGIN {
n = split(rel, a, "/")
for(i = 1; i <= n; ++i) {
if(a[i] == "..") ++c
}
abs = dom
m=split(origin, b, "/")
for(i = 1; i < m - c; ++i) {
abs=abs"/"b[i]
}
print abs"/"file
}'
这是另一种方法,使用 AWK
,信贷爱德华为提的真实路径-m
:
An alternative approach to using awk
, credit to Edward for mentioning realpath -m
:
#!/bin/bash
rel="../../index.php"
origin="www.example.com/1/2/index.php"
directory=$(dirname $origin)
fullpath=$(realpath -m "$directory/$rel")
echo ${fullpath#$(pwd)/}
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