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75 lines
1.6 KiB
C++
75 lines
1.6 KiB
C++
#pragma once
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#include <string>
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namespace spdlog {
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namespace details {
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inline void scramble(std::string& dst, std::string_view s)
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{
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if (s.empty())
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return;
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auto start = s.data();
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auto const end = s.data() + s.size();
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auto cursor = start;
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dst.reserve(dst.size() + s.size());
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auto replace = [&](std::string_view with) {
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dst.append(start, size_t(cursor - start));
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++cursor;
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start = cursor;
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dst.append(with);
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};
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while (cursor != end) {
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auto c = static_cast<unsigned char>(*cursor);
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switch (c) {
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case '\b':
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replace("\\b");
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break;
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case '\f':
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replace("\\f");
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break;
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case '\n':
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replace("\\n");
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break;
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case '\r':
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replace("\\r");
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break;
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case '\t':
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replace("\\t");
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break;
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case '\\':
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replace("\\\\");
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break;
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case '"':
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replace("\\\"");
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break;
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default:
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if (c <= '\x0f') {
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char buf[] = "\\u0000";
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buf[5] += c;
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if (c >= '\x0a')
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buf[5] += 'a' - ':';
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replace(buf);
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}
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else if (c <= '\x1f' || c == 0x7f) {
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char buf[] = "\\u0010";
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buf[5] += c - 16;
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if (c >= '\x1a')
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buf[5] += 'a' - ':';
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replace(buf);
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}
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else
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++cursor;
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}
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}
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if (cursor != start)
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dst.append({start, size_t(cursor - start)});
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}
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}
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} |