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44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
#ifndef STRING_LIMITS_H
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#define STRING_LIMITS_H
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#include <QString>
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#include <algorithm>
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#include <string>
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/** @brief Max size for short strings, like names and things that are generally a single phrase. */
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constexpr int MAX_NAME_LENGTH = 0xff;
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/** @brief Max size for chat messages and text contents. */
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constexpr int MAX_TEXT_LENGTH = 0xfff;
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/** @brief Max size for deck files and pictures (about 2 megabytes). */
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constexpr int MAX_FILE_LENGTH = 0x1fffff;
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/** @brief Returns a QString from a std::string, truncated to at most MAX_NAME_LENGTH bytes. */
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inline QString nameFromStdString(const std::string &_string)
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{
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return QString::fromUtf8(_string.data(), std::min(int(_string.size()), MAX_NAME_LENGTH));
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}
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/** @brief Returns a QString from a std::string, truncated to at most MAX_TEXT_LENGTH bytes. */
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inline QString textFromStdString(const std::string &_string)
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{
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return QString::fromUtf8(_string.data(), std::min(int(_string.size()), MAX_TEXT_LENGTH));
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}
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/** @brief Returns a QString from a std::string, truncated to at most MAX_TEXT_LENGTH bytes, keeping the tail. */
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inline QString textTailFromStdString(const std::string &_string)
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{
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if (int(_string.size()) <= MAX_TEXT_LENGTH) {
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return QString::fromUtf8(_string.data(), int(_string.size()));
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}
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int start = int(_string.size()) - MAX_TEXT_LENGTH;
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while (start < int(_string.size()) && (static_cast<unsigned char>(_string[start]) & 0xC0) == 0x80) {
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++start;
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}
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return QString::fromUtf8(_string.data() + start, int(_string.size()) - start);
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}
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/** @brief Returns a QString from a std::string, truncated to at most MAX_FILE_LENGTH bytes. */
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inline QString fileFromStdString(const std::string &_string)
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{
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return QString::fromUtf8(_string.data(), std::min(int(_string.size()), MAX_FILE_LENGTH));
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}
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#endif // STRING_LIMITS_H
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