From 67e9f03f23a454f273aeb6f83e338c057c3efb93 Mon Sep 17 00:00:00 2001
From: oy <Tom_Adams@web.de>
Date: Fri, 1 Oct 2010 00:55:16 +0200
Subject: when setting a config string variable check if it's a utf8 string and
 encode it if the check fails. Closes #10

---
 src/base/system.c | 18 ++++++++++++++++++
 src/base/system.h | 16 ++++++++++++++++
 2 files changed, 34 insertions(+)

(limited to 'src/base')

diff --git a/src/base/system.c b/src/base/system.c
index bf473650..25e89896 100644
--- a/src/base/system.c
+++ b/src/base/system.c
@@ -1454,6 +1454,24 @@ int str_utf8_decode(const char **ptr)
 	
 }
 
+int str_utf8_check(const char *str)
+{
+	while(*str)
+	{
+		if((*str&0x80) == 0x0)
+			str++;	
+		else if((*str&0xE0) == 0xC0 && (*(str+1)&0xC0) == 0x80)
+			str += 2;
+		else if((*str&0xF0) == 0xE0 && (*(str+1)&0xC0) == 0x80 && (*(str+2)&0xC0) == 0x80)
+			str += 3;
+		else if((*str&0xF8) == 0xF0 && (*(str+1)&0xC0) == 0x80 && (*(str+2)&0xC0) == 0x80 && (*(str+3)&0xC0) == 0x80)
+			str += 4;
+		else
+			return 0;
+	}
+	return 1;
+}
+
 
 unsigned str_quickhash(const char *str)
 {
diff --git a/src/base/system.h b/src/base/system.h
index f71a03ec..62fe02e9 100644
--- a/src/base/system.h
+++ b/src/base/system.h
@@ -1147,6 +1147,22 @@ int str_utf8_decode(const char **ptr);
 */
 int str_utf8_encode(char *ptr, int chr);
 
+/*
+	Function: str_utf8_check
+		Checks if a strings contains just valid utf8 characters.
+	
+	Parameters:
+		str - Pointer to a possible utf8 string.
+		
+	Returns:
+		0 - invalid characters found.
+		1 - only valid characters found.
+
+	Remarks:
+		- The string is treated as zero-terminated utf8 string.
+*/
+int str_utf8_check(const char *str);
+
 #ifdef __cplusplus
 }
 #endif
-- 
cgit 1.4.1