ref: 90186dc24eaf17b8f20f650a9c8ec097d1e30828
parent: 812c550f75aadbea39740d3fe37139f54139efb2
author: sl <[email protected]>
date: Sun Jul 19 23:59:49 EDT 2009
Add url_encode function to cgilib.rc
--- a/bin/cgilib.rc
+++ b/bin/cgilib.rc
@@ -107,6 +107,46 @@
'
}
+fn url_encode {+ awk '
+ BEGIN {+ # We assume an awk implementation that is just plain dumb.
+ # We will convert an character to its ASCII value with the
+ # table ord[], and produce two-digit hexadecimal output
+ # without the printf("%02X") feature.+
+ EOL = "%0A" # "end of line" string (encoded)
+ split ("1 2 3 4 5 6 7 8 9 A B C D E F", hextab, " ")+ hextab [0] = 0
+ for ( i=1; i<=255; ++i ) ord [ sprintf ("%c", i) "" ] = i + 0+ if ("'^$"EncodeEOL^'" == "yes") EncodeEOL = 1; else EncodeEOL = 0+ }
+ {+ encoded = ""
+ for ( i=1; i<=length ($0); ++i ) {+ c = substr ($0, i, 1)
+ if ( c ~ /[a-zA-Z0-9.-]/ ) {+ encoded = encoded c # safe character
+ } else if ( c == " " ) {+ encoded = encoded "+" # special handling
+ } else {+ # unsafe character, encode it as a two-digit hex-number
+ lo = ord [c] % 16
+ hi = int (ord [c] / 16);
+ encoded = encoded "%" hextab [hi] hextab [lo]
+ }
+ }
+ if ( EncodeEOL ) {+ printf ("%s", encoded EOL)+ } else {+ print encoded
+ }
+ }
+ END {+ #if ( EncodeEOL ) print ""
+ }
+' $*
+}
# Cookies
fn set_cookie {