mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-03-03 07:29:23 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Added wcstok and wmemcmp (#183)

Browse source
This commit is contained in:
Gautham 2021-06-10 08:04:27 +05:30 • committed by GitHub
parent f721d61b54
commit 05350eca60
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 102 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
libc/str/str.h
View file

@ -165,6 +165,7 @@ char *strncpy(char *, const char *, size_t) memcpyesque;
char *strtok(char *, const char *) paramsnonnull((2)) libcesque;
char *strtok_r(char *, const char *, char **) paramsnonnull((2, 3));
uint16_t *strcpyzbw(uint16_t *, const char *) memcpyesque;
wchar_t *wcstok(wchar_t *, const wchar_t *, wchar_t **) paramsnonnull((2, 3));
char *wstrtrunc(uint16_t *) memcpyesque;
char *wstrntrunc(uint16_t *, size_t) memcpyesque;
bool startswith(const char *, const char *) strlenesque;

61
libc/str/wcstok.c Normal file
View file

@ -0,0 +1,61 @@
/*-*- 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│
╞══════════════════════════════════════════════════════════════════════════════╡
│ This is free and unencumbered software released into the public domain. │
│ │
│ Anyone is free to copy, modify, publish, use, compile, sell, or │
│ distribute this software, either in source code form or as a compiled │
│ binary, for any purpose, commercial or non-commercial, and by any │
│ means. │
│ │
│ In jurisdictions that recognize copyright laws, the author or authors │
│ of this software dedicate any and all copyright interest in the │
│ software to the public domain. We make this dedication for the benefit │
│ of the public at large and to the detriment of our heirs and │
│ successors. We intend this dedication to be an overt act of │
│ relinquishment in perpetuity of all present and future rights to this │
│ software under copyright law. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │
│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │
│ OTHER DEALINGS IN THE SOFTWARE. │
│ │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
/**
* Extracts non-empty tokens from string.
*
* @param s is mutated and should be NULL on subsequent calls
* @param sep is a NUL-terminated set of wchars to consider separators
* @param state tracks progress between calls
* @return pointer to next token or NULL for end
*/
wchar_t *wcstok(wchar_t *s, const wchar_t *sep, wchar_t **state) {
size_t leadingseps, tokenlen;
if (!s) {
s = *state;
if (!s) {
return NULL;
}
}
leadingseps = wcsspn(s, sep);
s += leadingseps;
if (*s) {
tokenlen = wcscspn(s, sep);
if (s[tokenlen]) {
s[tokenlen] = L'\0';
*state = &s[tokenlen + 1];
return s;
} else if (tokenlen) {
s[tokenlen] = L'\0';
*state = NULL;
return s;
}
}
return (*state = NULL);
}

40
libc/str/wmemcmp.c Normal file
View file

@ -0,0 +1,40 @@
/*-*- 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│
╞══════════════════════════════════════════════════════════════════════════════╡
│ This is free and unencumbered software released into the public domain. │
│ │
│ Anyone is free to copy, modify, publish, use, compile, sell, or │
│ distribute this software, either in source code form or as a compiled │
│ binary, for any purpose, commercial or non-commercial, and by any │
│ means. │
│ │
│ In jurisdictions that recognize copyright laws, the author or authors │
│ of this software dedicate any and all copyright interest in the │
│ software to the public domain. We make this dedication for the benefit │
│ of the public at large and to the detriment of our heirs and │
│ successors. We intend this dedication to be an overt act of │
│ relinquishment in perpetuity of all present and future rights to this │
│ software under copyright law. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
│ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │
│ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
│ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │
│ OTHER DEALINGS IN THE SOFTWARE. │
│ │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/str.h"
/**
* Compares NUL-terminated wide strings w/ limit.
*
* @param a is first non-null NUL-terminated string pointer
* @param b is second non-null NUL-terminated string pointer
* @return is <0, 0, or >0 based on uint8_t comparison
* @asyncsignalsafe
*/
int wmemcmp(const wchar_t *a, const wchar_t *b, size_t n) {
return wcsncmp(a, b, n);
}