101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
#ifndef STRING_UTIL_HPP
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#define STRING_UTIL_HPP
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#include <cctype>
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#include <random>
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#include <string>
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#include <vector>
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namespace osrm::util
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{
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inline bool RequiresJSONStringEscaping(const std::string &string)
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{
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for (const char letter : string)
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{
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switch (letter)
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{
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case '\\':
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case '"':
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case '/':
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case '\b':
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case '\f':
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case '\n':
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case '\r':
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case '\t':
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return true;
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default:
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continue;
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}
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}
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return false;
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}
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inline void EscapeJSONString(const std::string &input, std::string &output)
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{
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for (const char letter : input)
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{
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switch (letter)
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{
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case '\\':
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output += "\\\\";
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break;
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case '"':
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output += "\\\"";
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break;
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case '/':
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output += "\\/";
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break;
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case '\b':
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output += "\\b";
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break;
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case '\f':
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output += "\\f";
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break;
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case '\n':
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output += "\\n";
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break;
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case '\r':
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output += "\\r";
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break;
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case '\t':
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output += "\\t";
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break;
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default:
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output.append(1, letter);
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break;
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}
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}
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}
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inline std::size_t URIDecode(const std::string &input, std::string &output)
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{
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auto src_iter = std::begin(input);
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const auto src_end = std::end(input);
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output.resize(input.size() + 1);
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std::size_t decoded_length = 0;
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for (decoded_length = 0; src_iter != src_end; ++decoded_length)
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{
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if (src_iter[0] == '%' && src_iter[1] && src_iter[2] && isxdigit(src_iter[1]) &&
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isxdigit(src_iter[2]))
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{
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std::string::value_type a = src_iter[1];
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std::string::value_type b = src_iter[2];
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a -= src_iter[1] < 58 ? 48 : src_iter[1] < 71 ? 55 : 87;
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b -= src_iter[2] < 58 ? 48 : src_iter[2] < 71 ? 55 : 87;
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output[decoded_length] = 16 * a + b;
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src_iter += 3;
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continue;
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}
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output[decoded_length] = *src_iter++;
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}
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output.resize(decoded_length);
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return decoded_length;
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}
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inline std::size_t URIDecodeInPlace(std::string &URI) { return URIDecode(URI, URI); }
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} // namespace osrm::util
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#endif // STRING_UTIL_HPP
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