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/*++
/* 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);
}
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