88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
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/*
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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 "rtc_base/stringutils.h"
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namespace rtc {
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size_t strcpyn(char* buffer,
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size_t buflen,
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const char* source,
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size_t srclen /* = SIZE_UNKNOWN */) {
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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 = strlen(source);
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}
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if (srclen >= buflen) {
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srclen = buflen - 1;
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}
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memcpy(buffer, source, srclen);
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buffer[srclen] = 0;
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return srclen;
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}
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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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std::string ToHex(const int i) {
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char buffer[50];
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snprintf(buffer, sizeof(buffer), "%x", i);
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return std::string(buffer);
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}
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std::string LeftPad(char padding, unsigned length, std::string s) {
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if (s.length() >= length)
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return s;
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return std::string(length - s.length(), padding) + s;
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}
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} // namespace rtc
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