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// Iffy |
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// |
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// Douglas Thrift |
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// |
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// $Id$ |
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#include "Tag.hpp" |
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#include "Matcher.hpp" |
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#include <menes-api/exename.hpp> |
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#include <menes-api/files.hpp> |
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#include <menes-app/application.hpp> |
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#include <menes-ext/stack.hpp> |
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struct IffyCommand : public app::Application |
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{ |
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virtual int Run(const app::ArgumentList& args) |
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{ |
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Iffy::program = api::GetExecutablePath().GetName(); |
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ext::String in("-"), out("-"); |
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for (size_t index(0); index < args.GetSize(); ++index) |
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{ |
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Matcher matcher; |
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if (args[index] == "-D") |
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{ |
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if (!Iffy::debug) Iffy::debug = true; |
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} |
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else if (args[index] == matcher("^-in=(.+)$")) |
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{ |
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in = matcher[1]; |
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} |
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else if (args[index] == matcher("^-out=(.+)$")) |
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{ |
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out = matcher[1]; |
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} |
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else |
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{ |
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api::Cout << "Usage: " << Iffy::program << " [-in=in] [-out=out] [-D]\n"; |
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return 1; |
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} |
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} |
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Iffy(in, out); |
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return 0; |
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} |
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} iffy; |
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Iffy::Iffy(const ext::String& in, const ext::String& out) |
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{ |
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if (in == "-" && out == "-") |
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{ |
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iffy(api::Cin, api::Cout); |
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} |
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else if (in == "-") |
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{ |
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api::FileWriter fout(out); |
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iffy(api::Cin, fout); |
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} |
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else if (out == "-") |
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{ |
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api::FileReader fin(in); |
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iffy(fin, api::Cout); |
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} |
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else |
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{ |
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api::FileReader fin(in); |
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api::FileWriter fout(out); |
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iffy(fin, fout); |
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} |
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} |
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ext::String Iffy::program; |
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bool Iffy::debug(false); |
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void Iffy::iffy(ios::Reader& in, ios::Writer& out) |
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{ |
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ext::String segment; |
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bool text(true); |
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ios::FormatWriter fout(out); |
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ext::Stack<ext::String> opens; |
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while (read(in, segment, text)) if (text) |
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{ |
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fout << segment << ios::Flush; |
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text = false; |
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} |
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else |
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{ |
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Tag tag(segment); |
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if (tag == "br") tag = STANDALONE; |
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switch (tag) |
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{ |
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case OPEN: |
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opens.Push(tag); |
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break; |
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case CLOSE: |
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if (tag != opens.Top()) tag = opens.Top(); |
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opens.Pop(); |
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break; |
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default: |
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break; |
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} |
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fout << tag << ios::Flush; |
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text = true; |
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} |
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} |
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bool Iffy::read(ios::Reader& in, ext::String& segment, bool text) |
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{ |
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segment.Clear(); |
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byte_t atom; |
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while (in.Get(atom)) |
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{ |
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if (atom == (text ? '<' : '>')) return true; |
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segment.InsertLast(atom); |
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} |
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return !segment.IsEmpty(); |
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} |
