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Delete LIBC_CALLS_HEFTY

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- fork() no longer requires malloc()
- readdir() moved to LIBC_STDIO
- Custom APIs moved to LIBC_X
This commit is contained in:
Justine Tunney 2021-02-02 22:17:53 -08:00
parent c843243322
commit 23a14b537c
44 changed files with 95 additions and 168 deletions
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48
libc/x/replaceuser.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/bits/safemacros.h"
#include "libc/calls/calls.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
/**
* Replaces tilde in path w/ user home folder.
*
* @param path is NULL propagating
* @return must be free()'d
*/
char *replaceuser(const char *path) {
char *res, *p;
const char *home;
size_t pathlen, homelen;
res = NULL;
if (path && *path++ == '~' && !isempty((home = getenv("HOME")))) {
while (*path == '/') path++;
pathlen = strlen(path);
homelen = strlen(home);
while (homelen && home[homelen - 1] == '/') homelen--;
if ((p = res = malloc(pathlen + 1 + homelen + 1))) {
p = mempcpy(p, home, homelen);
*p++ = '/';
memcpy(p, path, pathlen + 1);
}
}
return res;
}