From ff4b919683537625f693eedf53006364d0f8444d Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Sat, 29 Jan 2005 20:14:37 +0000
Subject: initial commit into repository

---
(limited to 'src/util.cc')

diff --git a/src/util.cc b/src/util.cc
new file mode 100644
index 0000000..2e2d305
--- a/dev/null
+++ b/src/util.cc
@@ -0,0 +1,53 @@
+#include "kingate/util.h"
+#include "kingate/exception.h"
+
+namespace kingate {
+
+    static const char *safeChars = 
+	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	"abcdefghijklmnopqrstuvwxyz"
+	"0123456789"
+	"_-" ;
+
+    string url_escape(const string& str) {
+	string rv = str;
+	string::size_type screwed = 0;
+	for(;;) {
+	    screwed = rv.find_first_not_of(safeChars,screwed);
+	    if(screwed == string::npos)
+		break;
+	    while(screwed<rv.length() && !strchr(safeChars,rv.at(screwed))) {
+		char danger = rv.at(screwed);
+		if(danger==' ') {
+		    rv.replace(screwed++,1,1,'+');
+		}else{
+		    static char tmp[4] = {'%',0,0,0};
+		    snprintf(&tmp[1],3,"%02X",0xFF&(int)danger);
+		    rv.replace(screwed,1,tmp,3);
+		    screwed+=3;
+		}
+	    }
+	}
+	return rv;
+    }
+    string url_unescape(const string& str) {
+	string rv = str;
+	string::size_type unscrewed = 0;
+	for(;;) {
+	    unscrewed = rv.find_first_of("%+",unscrewed);
+	    if(unscrewed == string::npos)
+		break;
+	    if(rv.at(unscrewed)=='+') {
+		rv.replace(unscrewed++,1,1,' ');
+	    }else{
+		if((rv.length()-unscrewed)<3)
+		    throw exception(CODEPOINT,"incorrectly escaped string");
+		// XXX: ensure it's hex?
+		int danger = strtol(rv.substr(unscrewed+1,2).c_str(),NULL,16);
+		rv.replace(unscrewed,3,1,danger);
+		unscrewed++;
+	    }
+	}
+	return rv;
+    }
+}
--
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