medfall

commit f5c6767f4dabffe9fd2427bd4a5a315049213964
parent 7e30adcbc9f27d53dc5bb4f05c2944aaa36356c5
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Fri Sep  2 15:55:05 -0700

Add str.h

Diffstat:
str.h
 | 
85
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+), 0 deletions(-)
diff --git a/str.h b/str.h
@@ -0,0 +1,85 @@
+#ifndef _STR_H_
+#define _STR_H_
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <bsd/string.h>
+
+#include "intrinsics.h"
+
+template< size_t N >
+class str {
+public:
+	str() {
+		clear();
+	}
+
+	void clear() {
+		buf[ 0 ] = '\0';
+		length = 0;
+	}
+
+	void operator+=( const char * rhs ) {
+		size_t copied = strlcpy( buf + length, rhs, N - length );
+		length += min( copied, N - length - 1 );
+	}
+
+	void operator+=( int n ) {
+		appendf( "%d", n );
+	}
+
+	void operator+=( long n ) {
+		appendf( "%ld", n );
+	}
+
+	void operator+=( long long n ) {
+		appendf( "%lld", n );
+	}
+
+	void operator+=( unsigned int n ) {
+		appendf( "%u", n );
+	}
+
+	void operator+=( unsigned long n ) {
+		appendf( "%lu", n );
+	}
+
+	void operator+=( unsigned long long n ) {
+		appendf( "%llu", n );
+	}
+
+	void operator+=( double x ) {
+		appendf( "%f", x );
+	}
+
+	// TODO: implement our own vsnprintf with support for vectors etc
+	void sprintf( const char * fmt, ... ) {
+		va_list argp;
+		va_start( argp, fmt );
+		size_t copied = vsnprintf( buf, N, fmt, argp );
+		length = min( copied, N - 1 );
+		va_end( argp );
+	}
+
+	void appendf( const char * fmt, ... ) {
+		va_list argp;
+		va_start( argp, fmt );
+		size_t copied = vsnprintf( buf + length, N - length, fmt, argp );
+		length += min( copied, N - length - 1 );
+		va_end( argp );
+	}
+
+	const char * c_str() {
+		return buf;
+	}
+
+	size_t len() {
+		return length;
+	}
+
+private:
+	char buf[ N ];
+	size_t length;
+};
+
+#endif // _STR_H_