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- /*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "src/sksl/SkSLString.h"
- #include "src/sksl/SkSLUtil.h"
- #include <algorithm>
- #include <errno.h>
- #include <limits.h>
- #include <locale>
- #include <sstream>
- #include <string>
- namespace SkSL {
- String String::printf(const char* fmt, ...) {
- va_list args;
- va_start(args, fmt);
- String result;
- result.vappendf(fmt, args);
- va_end(args);
- return result;
- }
- void String::appendf(const char* fmt, ...) {
- va_list args;
- va_start(args, fmt);
- this->vappendf(fmt, args);
- va_end(args);
- }
- void String::reset() {
- this->clear();
- }
- int String::findLastOf(const char c) const {
- // Rely on find_last_of and remap the output
- size_t index = this->find_last_of(c);
- return (index == std::string::npos ? -1 : index);
- }
- void String::vappendf(const char* fmt, va_list args) {
- #ifdef SKSL_BUILD_FOR_WIN
- #define VSNPRINTF _vsnprintf
- #else
- #define VSNPRINTF vsnprintf
- #endif
- #define BUFFER_SIZE 256
- char buffer[BUFFER_SIZE];
- va_list reuse;
- va_copy(reuse, args);
- size_t size = VSNPRINTF(buffer, BUFFER_SIZE, fmt, args);
- if (BUFFER_SIZE >= size) {
- this->append(buffer, size);
- } else {
- auto newBuffer = std::unique_ptr<char[]>(new char[size + 1]);
- VSNPRINTF(newBuffer.get(), size + 1, fmt, reuse);
- this->append(newBuffer.get(), size);
- }
- va_end(reuse);
- }
- bool String::startsWith(const char* s) const {
- return !strncmp(c_str(), s, strlen(s));
- }
- bool String::endsWith(const char* s) const {
- size_t len = strlen(s);
- if (size() < len) {
- return false;
- }
- return !strncmp(c_str() + size() - len, s, len);
- }
- int String::find(const String& substring, int fromPos) const {
- return find(substring.c_str(), fromPos);
- }
- int String::find(const char* substring, int fromPos) const {
- SkASSERT(fromPos >= 0);
- size_t found = INHERITED::find(substring, (size_t) fromPos);
- return found == std::string::npos ? -1 : found;
- }
- String String::operator+(const char* s) const {
- String result(*this);
- result.append(s);
- return result;
- }
- String String::operator+(const String& s) const {
- String result(*this);
- result.append(s);
- return result;
- }
- String String::operator+(StringFragment s) const {
- String result(*this);
- result.append(s.fChars, s.fLength);
- return result;
- }
- String& String::operator+=(char c) {
- INHERITED::operator+=(c);
- return *this;
- }
- String& String::operator+=(const char* s) {
- INHERITED::operator+=(s);
- return *this;
- }
- String& String::operator+=(const String& s) {
- INHERITED::operator+=(s);
- return *this;
- }
- String& String::operator+=(StringFragment s) {
- this->append(s.fChars, s.fLength);
- return *this;
- }
- bool String::operator==(const String& s) const {
- return this->size() == s.size() && !memcmp(c_str(), s.c_str(), this->size());
- }
- bool String::operator!=(const String& s) const {
- return !(*this == s);
- }
- bool String::operator==(const char* s) const {
- return this->size() == strlen(s) && !memcmp(c_str(), s, this->size());
- }
- bool String::operator!=(const char* s) const {
- return !(*this == s);
- }
- String operator+(const char* s1, const String& s2) {
- String result(s1);
- result.append(s2);
- return result;
- }
- bool operator==(const char* s1, const String& s2) {
- return s2 == s1;
- }
- bool operator!=(const char* s1, const String& s2) {
- return s2 != s1;
- }
- bool StringFragment::operator==(StringFragment s) const {
- if (fLength != s.fLength) {
- return false;
- }
- return !memcmp(fChars, s.fChars, fLength);
- }
- bool StringFragment::operator!=(StringFragment s) const {
- if (fLength != s.fLength) {
- return true;
- }
- return memcmp(fChars, s.fChars, fLength);
- }
- bool StringFragment::operator==(const char* s) const {
- for (size_t i = 0; i < fLength; ++i) {
- if (fChars[i] != s[i]) {
- return false;
- }
- }
- return 0 == s[fLength];
- }
- bool StringFragment::operator!=(const char* s) const {
- for (size_t i = 0; i < fLength; ++i) {
- if (fChars[i] != s[i]) {
- return true;
- }
- }
- return 0 != s[fLength];
- }
- bool StringFragment::operator<(StringFragment other) const {
- int comparison = strncmp(fChars, other.fChars, std::min(fLength, other.fLength));
- if (comparison) {
- return comparison < 0;
- }
- return fLength < other.fLength;
- }
- bool operator==(const char* s1, StringFragment s2) {
- return s2 == s1;
- }
- bool operator!=(const char* s1, StringFragment s2) {
- return s2 != s1;
- }
- String to_string(int32_t value) {
- return SkSL::String::printf("%d", value);
- }
- String to_string(uint32_t value) {
- return SkSL::String::printf("%u", value);
- }
- String to_string(int64_t value) {
- std::stringstream buffer;
- buffer << value;
- return String(buffer.str().c_str());
- }
- String to_string(uint64_t value) {
- std::stringstream buffer;
- buffer << value;
- return String(buffer.str().c_str());
- }
- String to_string(double value) {
- std::stringstream buffer;
- buffer.imbue(std::locale::classic());
- buffer.precision(17);
- buffer << value;
- bool needsDotZero = true;
- const std::string str = buffer.str();
- for (int i = str.size() - 1; i >= 0; --i) {
- char c = str[i];
- if (c == '.' || c == 'e') {
- needsDotZero = false;
- break;
- }
- }
- if (needsDotZero) {
- buffer << ".0";
- }
- return String(buffer.str().c_str());
- }
- SKSL_INT stoi(const String& s) {
- char* p;
- SkDEBUGCODE(errno = 0;)
- long result = strtoul(s.c_str(), &p, 0);
- SkASSERT(*p == 0);
- SkASSERT(!errno);
- return result;
- }
- SKSL_FLOAT stod(const String& s) {
- double result;
- std::string str(s.c_str(), s.size());
- std::stringstream buffer(str);
- buffer.imbue(std::locale::classic());
- buffer >> result;
- SkASSERT(!buffer.fail());
- return result;
- }
- long stol(const String& s) {
- char* p;
- SkDEBUGCODE(errno = 0;)
- long result = strtoul(s.c_str(), &p, 0);
- SkASSERT(*p == 0);
- SkASSERT(!errno);
- return result;
- }
- } // namespace
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