added a strlcat

2 files changed, 25 insertions, 0 deletions

diff --git a/src/libc/string.c b/src/libc/string.c
index 904f33c..2dd351d 100644
--- a/src/libc/string.c
+++ b/src/libc/string.c
@@ -88,3 +88,27 @@ size_t strlcpy( char *d, const char *s, size_t n )
 	
 	return len;
 }
+
+size_t strlcat( char *d, const char *s, size_t n )
+{
+	size_t len = 0;
+	const char *ss = s;
+	char *dd = d;
+	
+	while( len < n && *dd != '\0' ) {
+		len++;
+		dd++;
+	}
+	
+	if( len == n ) {
+		return len + strlen( s );
+	}
+	
+	while( len + 1 < n && ( *dd++ = *ss++ ) ) {
+		len++;
+	}
+	
+	*dd = '\0';
+	
+	return len;
+}	
diff --git a/src/libc/string.h b/src/libc/string.h
index fc29ae9..6c0fa01 100644
--- a/src/libc/string.h
+++ b/src/libc/string.h
@@ -10,5 +10,6 @@ void *memcpy( void *d, const void *s, size_t n );
 size_t strlen( const char *s );
 int strcmp( const char *s1, const char *s2 );
 size_t strlcpy( char *d, const char *s, size_t n );
+size_t strlcat( char *d, const char *s, size_t n );
 
 #endif // STRING_H