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-rw-r--r--lib/util.cc28
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/util.cc b/lib/util.cc
index a6e08e2..3e7f3aa 100644
--- a/lib/util.cc
+++ b/lib/util.cc
@@ -189,12 +189,40 @@ namespace opkele {
string rv;
for_each(str.begin(),str.end(),
__url_encoder(rv));
return rv;
}
+ string url_decode(const string& str) {
+ string rv;
+ back_insert_iterator<string> ii(rv);
+ for(string::const_iterator i=str.begin(),ie=str.end();
+ i!=ie;++i) {
+ switch(*i) {
+ case '+':
+ *(ii++) = ' '; break;
+ case '%':
+ ++i;
+ static char tmp[3] = {0,0,0};
+ if(i==ie)
+ throw failed_conversion(OPKELE_CP_ "trailing percent in the url-encoded string");
+ tmp[0] == *(i++);
+ if(i==ie)
+ throw failed_conversion(OPKELE_CP_ "not enough hexadecimals after the percent sign in url-encoded string");
+ tmp[1] == *i;
+ if(!(isxdigit(tmp[0]) && isxdigit(tmp[1])))
+ throw failed_conversion(OPKELE_CP_ "non-hex follows percent in url-encoded string");
+ *(ii++) = strtol(tmp,0,16);
+ break;
+ default:
+ *(ii++) = *i; break;
+ }
+ }
+ return rv;
+ }
+
string attr_escape(const string& str) {
static const char *unsafechars = "<>&\n\"'";
string rv;
string::size_type p=0;
while(true) {
string::size_type us = str.find_first_of(unsafechars,p);