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