added a simple itoa

1 files changed, 41 insertions, 47 deletions

diff --git a/src/port/stdlib.c b/src/port/stdlib.c
index 5cfaa8a..3a21fe6 100644
--- a/src/port/stdlib.c
+++ b/src/port/stdlib.c
@@ -24,53 +24,47 @@
 
 #include <errno.h>		/* for errno */
 
-char *wolf_port_itoa( int value, char *string, int radix );
-
-int wolf_port_lockf( int fd, int cmd, off_t len ) {
-	struct flock fl;
-	
-	memset( (char *)&fl, 0, sizeof( fl ) );
-	/* lockf is always relative to the current file position. */
-	fl.l_whence = SEEK_CUR;
-	fl.l_start = 0;
-	fl.l_len = len;
-	
-	errno = 0;
-	
-	switch( cmd ) {
-		case F_TEST:
-			fl.l_type = F_RDLCK;
-			if( fcntl( fd, F_GETLK, &fl ) < 0 ) {
-				return -1;
-			}
-			if( fl.l_type == F_UNLCK ||
-			    fl.l_pid == getpid( ) ) {
-				return 0;
-			}
-			errno = EACCES;
-			return -1;
-			
-		case F_ULOCK:
-			fl.l_type = F_UNLCK;
-			cmd = F_SETLK;
-			break;
-		
-		case F_LOCK:
-			fl.l_type = F_WRLCK;
-			cmd = F_SETLKW;
-			break;
-		
-		case F_TLOCK:
-			fl.l_type = F_WRLCK;
-			cmd = F_SETLK; 
-			break;
-			
-		default:
-			errno = EINVAL;
-			return -1;
+static void reverse( char *s ) {
+	int i, j;
+	char c;
+
+	for( i = 0, j = (int)strlen( s )-1; i<j; i++, j-- ) {
+		c = s[i];
+		s[i] = s[j];
+		s[j] = c;
+	}
+}
+
+char *wolf_port_itoa( int value, char *string, int radix ) {
+	int sign;
+	int i;
+	int digit;
+
+	/* remember sign and make value positive */
+	sign = value;
+	if( sign < 0 ) {
+		value = -value;
 	}
-	
-	return fcntl( fd, cmd, &fl );
+
+	i = 0;
+	do {
+		digit = value % radix;
+		value = value / radix;
+		if( digit < 10 ) {
+			string[i++] = (char)( digit + '0' );
+		} else {
+			string[i++] = (char)( digit - 10 + 'A' );
+		}
+	} while( value > 0 );
+
+	if( sign < 0 ) {
+		string[i++] = '-';
+	}
+	string[i] = '\0';
+
+	reverse( string );
+
+	return string;
 }
 
-#endif /* !defined HAVE_LOCKF || defined TEST_HAVE_LOCKF */
+#endif /* !defined HAVE_ITOA || defined TEST_HAVE_ITOA */