134 lines
3.4 KiB
C++
134 lines
3.4 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/base/checks.h"
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#include "webrtc/base/stringutils.h"
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namespace rtc {
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bool memory_check(const void* memory, int c, size_t count) {
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const char* char_memory = static_cast<const char*>(memory);
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char char_c = static_cast<char>(c);
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for (size_t i = 0; i < count; ++i) {
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if (char_memory[i] != char_c) {
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return false;
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}
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}
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return true;
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}
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bool string_match(const char* target, const char* pattern) {
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while (*pattern) {
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if (*pattern == '*') {
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if (!*++pattern) {
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return true;
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}
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while (*target) {
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if ((toupper(*pattern) == toupper(*target))
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&& string_match(target + 1, pattern + 1)) {
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return true;
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}
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++target;
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}
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return false;
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} else {
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if (toupper(*pattern) != toupper(*target)) {
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return false;
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}
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++target;
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++pattern;
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}
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}
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return !*target;
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}
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#if defined(WEBRTC_WIN)
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int ascii_string_compare(const wchar_t* s1, const char* s2, size_t n,
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CharacterTransformation transformation) {
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wchar_t c1, c2;
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while (true) {
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if (n-- == 0) return 0;
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c1 = transformation(*s1);
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// Double check that characters are not UTF-8
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RTC_DCHECK_LT(*s2, 128);
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// Note: *s2 gets implicitly promoted to wchar_t
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c2 = transformation(*s2);
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if (c1 != c2) return (c1 < c2) ? -1 : 1;
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if (!c1) return 0;
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++s1;
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++s2;
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}
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}
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size_t asccpyn(wchar_t* buffer, size_t buflen,
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const char* source, size_t srclen) {
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if (buflen <= 0)
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return 0;
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if (srclen == SIZE_UNKNOWN) {
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srclen = strlenn(source, buflen - 1);
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} else if (srclen >= buflen) {
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srclen = buflen - 1;
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}
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#if RTC_DCHECK_IS_ON
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// Double check that characters are not UTF-8
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for (size_t pos = 0; pos < srclen; ++pos)
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RTC_DCHECK_LT(source[pos], 128);
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#endif
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std::copy(source, source + srclen, buffer);
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buffer[srclen] = 0;
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return srclen;
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}
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#endif // WEBRTC_WIN
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void replace_substrs(const char *search,
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size_t search_len,
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const char *replace,
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size_t replace_len,
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std::string *s) {
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size_t pos = 0;
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while ((pos = s->find(search, pos, search_len)) != std::string::npos) {
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s->replace(pos, search_len, replace, replace_len);
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pos += replace_len;
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}
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}
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bool starts_with(const char *s1, const char *s2) {
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return strncmp(s1, s2, strlen(s2)) == 0;
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}
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bool ends_with(const char *s1, const char *s2) {
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size_t s1_length = strlen(s1);
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size_t s2_length = strlen(s2);
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if (s2_length > s1_length) {
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return false;
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}
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const char* start = s1 + (s1_length - s2_length);
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return strncmp(start, s2, s2_length) == 0;
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}
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static const char kWhitespace[] = " \n\r\t";
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std::string string_trim(const std::string& s) {
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std::string::size_type first = s.find_first_not_of(kWhitespace);
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std::string::size_type last = s.find_last_not_of(kWhitespace);
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if (first == std::string::npos || last == std::string::npos) {
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return std::string("");
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}
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return s.substr(first, last - first + 1);
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}
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} // namespace rtc
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