diff lwlib/lw_strbuf.c @ 308:670ea8f90212 ccdev

Converted preproc logic to library and moved some utility stuff to lwlib The strbuf and strpool stuff is generally useful so move it to lwlib where other such things live. Also, package the preprocessor logic into a library for easy use in multiple places.
author William Astle <lost@l-w.ca>
date Sat, 21 Sep 2013 13:33:54 -0600
parents lwcc/strbuf.c@4b17780f2777
children
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwlib/lw_strbuf.c	Sat Sep 21 13:33:54 2013 -0600
@@ -0,0 +1,56 @@
+/*
+lwlib/lw_strbuf.c
+
+Copyright © 2013 William Astle
+
+This file is part of LWTOOLS.
+
+LWTOOLS is free software: you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+
+#include "lw_alloc.h"
+#include "lw_strbuf.h"
+
+struct lw_strbuf *lw_strbuf_new(void)
+{
+	struct lw_strbuf *lw_strbuf;
+	
+	lw_strbuf = lw_alloc(sizeof(struct lw_strbuf));
+	lw_strbuf -> str = NULL;
+	lw_strbuf -> bo = 0;
+	lw_strbuf -> bl = 0;
+	return lw_strbuf;
+}
+
+void lw_strbuf_add(struct lw_strbuf *lw_strbuf, int c)
+{
+	if (lw_strbuf -> bo >= lw_strbuf -> bl)
+	{
+		lw_strbuf -> bl += 100;
+		lw_strbuf -> str = lw_realloc(lw_strbuf -> str, lw_strbuf -> bl);
+	}
+	lw_strbuf -> str[lw_strbuf -> bo++] = c;
+}
+
+char *lw_strbuf_end(struct lw_strbuf *lw_strbuf)
+{
+	char *rv;
+
+	lw_strbuf_add(lw_strbuf, 0);
+	rv = lw_strbuf -> str;
+	lw_free(lw_strbuf);
+	return rv;
+}