moved source files into commit repository

1 files changed, 57 insertions, 0 deletions

diff --git a/src/buffer.h b/src/buffer.h
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+/*
+ * Copyright 2003-2018 Adrian Thurston <thurston@colm.net>
+ *
+ * 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.
+ */
+
+#ifndef _COLM_BUFFER_H
+#define _COLM_BUFFER_H
+
+#define BUFFER_INITIAL_SIZE 4096
+
+/* An automatically grown buffer for collecting tokens. Always reuses space;
+ * never down resizes. */
+struct Buffer
+{
+	Buffer()
+	{
+		data = (char*) malloc( BUFFER_INITIAL_SIZE );
+		allocated = BUFFER_INITIAL_SIZE;
+		length = 0;
+	}
+	~Buffer() { free(data); }
+
+	void append( char p )
+	{
+		if ( length == allocated ) {
+			allocated *= 2;
+			data = (char*) realloc( data, allocated );
+		}
+		data[length++] = p;
+	}
+		
+	void clear() { length = 0; }
+
+	char *data;
+	int allocated;
+	int length;
+};
+
+#endif /* _COLM_BUFFER_H */
+