1 files changed, 131 insertions, 0 deletions
diff --git a/sipgen/heap.c b/sipgen/heap.c
new file mode 100644
index 0000000..a4b42ba
--- /dev/null
+++ b/sipgen/heap.c
@@ -0,0 +1,131 @@
+/*
+ * Wrappers around standard functions that use the heap.
+ *
+ * Copyright (c) 2010 Riverbank Computing Limited <info@riverbankcomputing.com>
+ *
+ * This file is part of SIP.
+ *
+ * This copy of SIP is licensed for use under the terms of the SIP License
+ * Agreement.  See the file LICENSE for more details.
+ *
+ * This copy of SIP may also used under the terms of the GNU General Public
+ * License v2 or v3 as published by the Free Software Foundation which can be
+ * found in the files LICENSE-GPL2 and LICENSE-GPL3 included in this package.
+ *
+ * SIP is supplied WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "sip.h"
+
+
+static void nomem(void);
+
+
+/*
+ * Wrap malloc() and handle any errors.
+ */
+void *sipMalloc(size_t n)
+{
+	void *h;
+
+	if ((h = malloc(n)) == NULL)
+		nomem();
+
+    memset(h, 0, n);
+
+	return h;
+}
+
+
+/*
+ * Wrap calloc() and handle any errors.
+ */
+void *sipCalloc(size_t nr, size_t n)
+{
+	void *h;
+
+	if ((h = calloc(nr, n)) == NULL)
+		nomem();
+
+    return h;
+}
+
+
+/*
+ * Wrap strdup() and handle any errors.
+ */
+char *sipStrdup(const char *s)
+{
+	char *h;
+
+	if ((h = strdup(s)) == NULL)
+		nomem();
+
+	return h;
+}
+
+
+/*
+ * Return a string on the heap which is the concatenation of all the arguments.
+ */
+char *concat(const char *s, ...)
+{
+	const char *sp;
+	char *new;
+	size_t len;
+	va_list ap;
+
+	/* Find the length of the final string. */
+
+	len = 1;
+	va_start(ap,s);
+
+	for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
+		len += strlen(sp);
+
+	va_end(ap);
+
+	/* Create the new string. */
+
+	new = sipMalloc(len);
+	*new = '\0';
+
+	va_start(ap,s);
+
+	for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
+		strcat(new,sp);
+
+	va_end(ap);
+
+	return new;
+}
+
+
+/*
+ * Append a string to another that is on the heap.
+ */
+
+void append(char **s, const char *new)
+{
+	if ((*s = realloc(*s,strlen(*s) + strlen(new) + 1)) == NULL)
+		nomem();
+
+	strcat(*s,new);
+}
+
+
+/*
+ * Display a standard error message when the heap is exhausted.
+ */
+
+static void nomem(void)
+{
+	fatal("Unable to allocate memory on the heap\n");
+}