mirror of
https://github.com/curl/curl.git
synced 2025-04-18 16:30:45 +08:00
b4538ec522
- add hex and octal parsers to the Curl_str_* family - make curlx_strtoofft use these parsers - remove all use of strtol() and strtoul() in library code - generally use Curl_str_* more than strtoofft, for stricter parsing - supports 64-bit universally, instead of 'long' which differs in size between platforms Extended the unit test 1664 to verify hex and octal parsing. Closes #16336
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include <curl/curl.h>
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#include "strcase.h"
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/*
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* curl_strequal() is for doing "raw" case insensitive strings. This is meant
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* to be locale independent and only compare strings we know are safe for
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* this. See https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for
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* further explanations as to why this function is necessary.
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*/
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static int casecompare(const char *first, const char *second)
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{
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while(*first) {
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if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
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/* get out of the loop as soon as they do not match */
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return 0;
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first++;
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second++;
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}
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/* If we are here either the strings are the same or the length is different.
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We can just test if the "current" character is non-zero for one and zero
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for the other. Note that the characters may not be exactly the same even
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if they match, we only want to compare zero-ness. */
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return !*first == !*second;
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}
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static int ncasecompare(const char *first, const char *second, size_t max)
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{
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while(*first && max) {
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if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
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return 0;
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max--;
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first++;
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second++;
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}
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if(0 == max)
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return 1; /* they are equal this far */
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return Curl_raw_toupper(*first) == Curl_raw_toupper(*second);
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}
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/* --- public function --- */
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int curl_strequal(const char *first, const char *second)
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{
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if(first && second)
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/* both pointers point to something then compare them */
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return casecompare(first, second);
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/* if both pointers are NULL then treat them as equal */
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return NULL == first && NULL == second;
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}
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/* --- public function --- */
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int curl_strnequal(const char *first, const char *second, size_t max)
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{
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if(first && second)
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/* both pointers point to something then compare them */
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return ncasecompare(first, second, max);
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/* if both pointers are NULL then treat them as equal if max is non-zero */
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return NULL == first && NULL == second && max;
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}
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