--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/strescape.c	Fri Jan 03 17:57:12 2003 +0200
@@ -0,0 +1,90 @@
+/*
+    Copyright (c) 2003 Timo Sirainen
+
+    Permission is hereby granted, free of charge, to any person obtaining
+    a copy of this software and associated documentation files (the
+    "Software"), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, sublicense, and/or sell copies of the Software, and to
+    permit persons to whom the Software is furnished to do so, subject to
+    the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "lib.h"
+#include "str.h"
+#include "strescape.h"
+
+const char *str_escape(const char *str)
+{
+	char *ret, *p;
+	size_t i, esc;
+
+	/* get length of string and number of chars to escape */
+	esc = 0;
+	for (i = 0; str[i] != '\0'; i++) {
+		if (IS_ESCAPED_CHAR(str[i]))
+			esc++;
+	}
+
+	if (esc == 0)
+		return str;
+
+	/* @UNSAFE: escape them */
+	p = ret = t_malloc(i + esc + 1);
+	for (; *str != '\0'; str++) {
+		if (IS_ESCAPED_CHAR(*str))
+			*p++ = '\\';
+		*p++ = *str;
+	}
+	*p = '\0';
+	return ret;
+}
+
+void str_append_unescaped(String *dest, const char *src, size_t src_size)
+{
+	size_t start = 0, i = 0;
+
+	while (i < src_size) {
+		start = i;
+		for (; i < src_size; i++) {
+			if (src[i] == '\\')
+				break;
+		}
+
+		str_append_n(dest, src + start, i-start);
+
+		if (src[i] == '\\')
+			i++;
+		start = i;
+	}
+}
+
+void str_unescape(char *str)
+{
+	/* @UNSAFE */
+	char *dest;
+
+	while (*str != '\\') {
+		if (*str == '\0')
+			return;
+		str++;
+	}
+
+	for (dest = str; *str != '\0'; str++) {
+		if (*str != '\\' || str[1] == '\0')
+			*dest++ = *str;
+	}
+
+	*dest = '\0';
+}