cgiparam

来自「将konqueror浏览器移植到ARM9 2410中」· 代码 · 共 47 行

#!/bin/sh

# This file is part of the KDE project
# Copyright (C) 2002 Paul Chitescu <[e-mail]>
# License: Open Source, Use On Your Own Risk
#
# Generic 8-bit CGI GET query parameter extractor
#
# Requires: sh, awk
#
# Usage: cgiparam param_name, var=`cgiparam param_name`, etc.

# set the decimal ASCII substitution code for null codes (%00)
# comment the line if you can and want process null characters
subst0=63

# you shouldn't need to change anything below
exec awk -v "name=$1" -v "subst0=$subst0" '
BEGIN {
  n=tolower(name);
  if (n == "") exit;
  tmp=ENVIRON["QUERY_STRING"];
  gsub("&","?",tmp);
  split(tmp,vars,"?");
  for (v in vars) {
    i=index(vars[v],"=");
    if (i && (n == tolower(substr(vars[v],1,i-1)))) {
      tmp=substr(vars[v],i+1);
      gsub("+"," ",tmp);
      b=1;
      do {
        i=match(substr(tmp,b),"%[[:xdigit:]][[:xdigit:]]");
        if (i) {
          i=i+b;
	  b=i;
          hex="0x" toupper(substr(tmp,i,2));
	  hex=0+hex;
	  if (subst0 && !hex) hex=subst0;
	  tmp=sprintf("%s%c%s",substr(tmp,1,i-2),hex,substr(tmp,i+2));
	}
      } while (i);
      print tmp;
      exit;
    }
  }
}'