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Diffstat (limited to 'crypto/heimdal/lib/roken/concat.c')
-rw-r--r-- | crypto/heimdal/lib/roken/concat.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/roken/concat.c b/crypto/heimdal/lib/roken/concat.c new file mode 100644 index 0000000..ca295c0 --- /dev/null +++ b/crypto/heimdal/lib/roken/concat.c @@ -0,0 +1,112 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +RCSID("$Id: concat.c,v 1.4 1999/12/02 16:58:45 joda Exp $"); +#endif +#include "roken.h" + +int +roken_concat (char *s, size_t len, ...) +{ + int ret; + va_list args; + + va_start(args, len); + ret = roken_vconcat (s, len, args); + va_end(args); + return ret; +} + +int +roken_vconcat (char *s, size_t len, va_list args) +{ + const char *a; + + while ((a = va_arg(args, const char*))) { + size_t n = strlen (a); + + if (n >= len) + return -1; + memcpy (s, a, n); + s += n; + len -= n; + } + *s = '\0'; + return 0; +} + +size_t +roken_vmconcat (char **s, size_t max_len, va_list args) +{ + const char *a; + char *p, *q; + size_t len = 0; + *s = NULL; + p = malloc(1); + if(p == NULL) + return 0; + len = 1; + while ((a = va_arg(args, const char*))) { + size_t n = strlen (a); + + if(max_len && len + n > max_len){ + free(p); + return 0; + } + q = realloc(p, len + n); + if(q == NULL){ + free(p); + return 0; + } + p = q; + memcpy (p + len - 1, a, n); + len += n; + } + p[len - 1] = '\0'; + *s = p; + return len; +} + +size_t +roken_mconcat (char **s, size_t max_len, ...) +{ + int ret; + va_list args; + + va_start(args, max_len); + ret = roken_vmconcat (s, max_len, args); + va_end(args); + return ret; +} |