| -rw-r--r-- | lib/util.cc | 28 |
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); |