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Remove printf() linking hack

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Justine Tunney 2023-06-17 10:13:50 -07:00
parent ba03cd95c5
commit b881c0ec9e
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107 changed files with 1520 additions and 2577 deletions
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58
libc/stdio/vasprintf.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/fmt/fmt.h"
#include "libc/mem/mem.h"
/**
* Formats string w/ dynamic memory allocation.
* @see xasprintf() for a better API
* @threadsafe
*/
int(vasprintf)(char **strp, const char *fmt, va_list va) {
va_list vb;
size_t size;
char *p, *p2;
int wrote, rc = -1;
if ((p = malloc((size = 512)))) {
va_copy(vb, va);
wrote = (vsnprintf)(p, size, fmt, va);
if (wrote < size) {
if ((p2 = realloc(p, wrote + 1))) {
p = p2;
rc = wrote;
}
} else {
size = wrote + 1;
if ((p2 = realloc(p, size))) {
p = p2;
wrote = (vsnprintf)(p, size, fmt, vb);
_unassert(wrote == size - 1);
rc = wrote;
}
}
va_end(vb);
}
if (rc != -1) {
*strp = p;
return rc;
} else {
return -1;
}
}