23 lines
1.5 KiB
Rexx
23 lines
1.5 KiB
Rexx
/*REXX program converts & displays a URL─encoded string ──► its original unencoded form.*/
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url. =
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url.1='http%3A%2F%2Ffoo%20bar%2F'
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url.2='mailto%3A%22Ivan%20Aim%22%20%3Civan%2Eaim%40email%2Ecom%3E'
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url.3='%6D%61%69%6C%74%6F%3A%22%49%72%6D%61%20%55%73%65%72%22%20%3C%69%72%6D%61%2E%75%73%65%72%40%6D%61%69%6C%2E%63%6F%6D%3E'
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do j=1 until url.j==''; say /*process each URL; display blank line.*/
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say url.j /*display the original URL. */
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say URLdecode(url.j) /* " " decoded " */
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end /*j*/
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exit /*stick a fork in it, we're all done. */
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/*──────────────────────────────────────────────────────────────────────────────────────*/
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URLdecode: procedure; parse arg yyy /*get encoded URL from argument list. */
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yyy= translate(yyy, , '+') /*a special case for an encoded blank. */
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URL=
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do until yyy==''
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parse var yyy plain '%' +1 code +2 yyy
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URL= URL || plain
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if datatype(code, 'X') then URL= URL || x2c(code)
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else URL= URL'%'code
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end /*until*/
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return URL
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