87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright(C) 2011 - Daniel Colascione, Microsoft Corporation
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* Public domain or equiv implied license
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* Microsoft gave their engineer permission to publish this reference code in his advisory article on MSDN/TechNet operated by MS
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* Stolen by commies and rebranded as GPL before -> https://fossies.org/linux/calibre/bypy/windows/portable.cpp
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*
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* CmdLine subsystem uses CommandLineToArgvW to parse commandline strings from Windows, just like **most** (not all) apps and crts in Windows land
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* Unix programs merely passthrough unmodified strings using execv
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*
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*/
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#include <Source/RuntimeInternal.hpp>
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#include "AuArgvQuote.hpp"
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void
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ArgvQuote(
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const AuString &argument,
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AuString &outputString,
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bool force
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)
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{
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//
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// Unless we're told otherwise, don't quote unless we actually
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// need to do so --- hopefully avoid problems if programs won't
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// parse quotes properly
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//
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if (!force &&
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argument.size() &&
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argument.find_first_of(" \t\n\v\"") == argument.npos)
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{
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outputString.append(argument);
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return;
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}
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outputString.push_back('"');
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for (auto itr = argument.begin() ; ; ++itr)
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{
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unsigned slashes = 0;
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while (itr != argument.end() && *itr == '\\')
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{
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++itr;
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++slashes;
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}
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if (itr == argument.end())
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{
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//
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// Escape all backslashes, but let the terminating
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// double quotation mark we add below be interpreted
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// as a metacharacter.
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//
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outputString.append(slashes * 2, '\\');
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break;
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}
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else if (*itr == '"')
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{
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//
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// Escape all backslashes and the following
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// double quotation mark.
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//
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outputString.append(slashes * 2 + 1, '\\');
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outputString.push_back(*itr);
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}
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else
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{
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//
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// Backslashes aren't special here.
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//
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if (AuString(" \t\n\v").find(*itr) != AuString::npos)
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{
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outputString.append(slashes, '\\');
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}
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outputString.push_back(*itr);
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}
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}
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outputString.push_back('"');
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} |