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-rw-r--r--lib/libc/stdio/vasprintf.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/lib/libc/stdio/vasprintf.c b/lib/libc/stdio/vasprintf.c
deleted file mode 100644
index 7b75b2c..0000000
--- a/lib/libc/stdio/vasprintf.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*-
- * Copyright (c) 1996 Peter Wemm <peter@freebsd.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- */
-
-#if defined(LIBC_RCS) && !defined(lint)
-static char rcsid[] = "$Id: vasprintf.c,v 1.6 1997/07/06 07:54:56 peter Exp $";
-#endif /* LIBC_RCS and not lint */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#if __STDC__
-#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
-
-#define CHUNK_SPARE 128 /* how much spare to allocate to avoid realloc calls */
-
-struct bufcookie {
- char *base; /* start of buffer */
- size_t size;
- size_t left;
-};
-
-static int writehook __P((void *cookie, const char *, int));
-
-static int
-writehook(cookie, buf, len)
- void *cookie;
- const char *buf;
- int len;
-{
- struct bufcookie *h = (struct bufcookie *)cookie;
- char *newbuf;
-
- if (len == 0)
- return 0;
-
- if (len > h->left) {
- /* grow malloc region */
- /*
- * XXX this is linearly expanded, which is slow for obscenely
- * large strings.
- */
- h->left = h->left + len + CHUNK_SPARE;
- h->size = h->size + len + CHUNK_SPARE;
- newbuf = realloc(h->base, h->size);
- if (newbuf == NULL) {
- free(h->base);
- h->base = NULL;
- return (-1);
- } else
- h->base = newbuf;
- }
- /* "write" it */
- (void)memcpy(h->base + h->size - h->left, buf, (size_t)len);
- h->left -= len;
- return (len);
-}
-
-
-int
-vasprintf(str, fmt, ap)
- char **str;
- const char *fmt;
- va_list ap;
-{
- int ret;
- FILE *f;
- struct bufcookie h;
-
- h.base = malloc(CHUNK_SPARE);
- if (h.base == NULL)
- return (-1);
- h.size = CHUNK_SPARE;
- h.left = CHUNK_SPARE;
-
- f = funopen(&h, NULL, writehook, NULL, NULL);
- if (f == NULL) {
- free(h.base);
- return (-1);
- }
- ret = vfprintf(f, fmt, ap);
- fclose(f);
-
- /*
- * clean up the wreckage. Did writehook fail or did something else
- * in stdio explode perhaps?
- */
- if (h.base == NULL) /* realloc failed in writehook */
- return (-1);
- if (ret < 0) { /* something else? */
- free(h.base);
- return (-1);
- }
-
- /*
- * At this point, we have a non-null terminated string in a
- * buffer. There may not be enough room to null-terminate it
- * (h.left == 0) - if realloc failes to expand it, it's fatal.
- * If we were merely trying to shrink the buffer, a realloc failure
- * is not [yet] fatal. Note that when realloc returns NULL,
- * the original buffer is left allocated and valid.
- */
- if (h.left == 1) /* exact fit, do not realloc */
- *str = h.base;
- else {
- *str = realloc(h.base, (size_t)(h.size - h.left + 1));
- if (*str == NULL) {
- /* failed to expand? - fatal */
- if (h.left == 0) {
- free(h.base);
- return (-1);
- }
- *str = h.base; /* use oversize original buffer */
- }
- }
- (*str)[h.size - h.left] = '\0';
- return (ret);
-}
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