1 files changed, 73 insertions, 0 deletions
diff --git a/src/util/concatenate.c b/src/util/concatenate.c
new file mode 100644
index 0000000..7b6a3eb
--- /dev/null
+++ b/src/util/concatenate.c
@@ -0,0 +1,73 @@
+/*++
+/* NAME
+/*	concatenate 3
+/* SUMMARY
+/*	concatenate strings
+/* SYNOPSIS
+/*	#include <stringops.h>
+/*
+/*	char	*concatenate(str, ...)
+/*	const char *str;
+/* DESCRIPTION
+/*	The \fBconcatenate\fR routine concatenates a null-terminated
+/*	list of pointers to null-terminated character strings.
+/*	The result is dynamically allocated and should be passed to myfree()
+/*	when no longer needed.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <stdlib.h>			/* 44BSD stdarg.h uses abort() */
+#include <stdarg.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include "mymalloc.h"
+#include "stringops.h"
+#include "compat_va_copy.h"
+
+/* concatenate - concatenate null-terminated list of strings */
+
+char   *concatenate(const char *arg0,...)
+{
+    char   *result;
+    va_list ap;
+    va_list ap2;
+    ssize_t len;
+    char   *arg;
+
+    /*
+     * Initialize argument lists.
+     */
+    va_start(ap, arg0);
+    VA_COPY(ap2, ap);
+
+    /*
+     * Compute the length of the resulting string.
+     */
+    len = strlen(arg0);
+    while ((arg = va_arg(ap, char *)) != 0)
+	len += strlen(arg);
+    va_end(ap);
+
+    /*
+     * Build the resulting string. Don't care about wasting a CPU cycle.
+     */
+    result = mymalloc(len + 1);
+    strcpy(result, arg0);
+    while ((arg = va_arg(ap2, char *)) != 0)
+	strcat(result, arg);
+    va_end(ap2);
+    return (result);
+}