eldritch horrors
b88a6e6f11
this has no performance impact in any benchmarks we've run. nul bytes are still used as implicit truncation points in many places all over: rejecting them in all locations that treat them as a string end point requires large changes such as using a proper path library everywhere Change-Id: I936158bd435f6abf009a689adfbc24496262c578
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
#include <iomanip>
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#include <ostream>
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#include <sstream>
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#include "lix/libutil/ansicolor.hh"
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#include "lix/libutil/escape-char.hh"
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#include "lix/libutil/english.hh"
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#include "lix/libutil/escape-string.hh"
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#include "lix/libutil/print-elided.hh"
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namespace nix {
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std::ostream &
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escapeString(std::ostream & output, std::string_view string, EscapeStringOptions options)
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{
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size_t charsPrinted = 0;
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if (options.outputAnsiColors) {
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output << ANSI_MAGENTA;
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}
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output << "\"";
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for (auto i = string.begin(); i != string.end(); ++i) {
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if (charsPrinted >= options.maxLength) {
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output << "\" ";
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printElided(
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output, string.length() - charsPrinted, "byte", "bytes", options.outputAnsiColors
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);
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return output;
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}
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if (*i == '\"' || *i == '\\') {
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output << "\\" << *i;
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} else if (*i == '\n') {
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output << "\\n";
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} else if (*i == '\r') {
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output << "\\r";
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} else if (*i == '\t') {
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output << "\\t";
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} else if (*i == '$' && i + 1 != string.end() && *(i + 1) == '{') {
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output << "\\" << *i;
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} else if (options.escapeNonPrinting && !isprint(*i)) {
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output << MaybeHexEscapedChar{*i};
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} else {
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output << *i;
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}
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charsPrinted++;
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}
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output << "\"";
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if (options.outputAnsiColors) {
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output << ANSI_NORMAL;
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}
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return output;
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}
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std::string escapeString(std::string_view s, EscapeStringOptions options)
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{
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std::ostringstream output;
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escapeString(output, s, options);
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return output.str();
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}
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}; // namespace nix
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