summaryrefslogtreecommitdiff
path: root/dviware/dvisvgm/src/InputReader.hpp
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/InputReader.hpp
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/InputReader.hpp')
-rw-r--r--dviware/dvisvgm/src/InputReader.hpp107
1 files changed, 107 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/InputReader.hpp b/dviware/dvisvgm/src/InputReader.hpp
new file mode 100644
index 0000000000..0ca4f10772
--- /dev/null
+++ b/dviware/dvisvgm/src/InputReader.hpp
@@ -0,0 +1,107 @@
+/*************************************************************************
+** InputReader.hpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** This program is free software; you can redistribute it and/or **
+** modify it under the terms of the GNU General Public License as **
+** published by the Free Software Foundation; either version 3 of **
+** the License, or (at your option) any later version. **
+** **
+** This program is distributed in the hope that it will be useful, but **
+** WITHOUT ANY WARRANTY; without even the implied warranty of **
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
+** GNU General Public License for more details. **
+** **
+** You should have received a copy of the GNU General Public License **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#ifndef INPUTREADER_HPP
+#define INPUTREADER_HPP
+
+#include <istream>
+#include <map>
+#include <string>
+#include <vector>
+#include "InputBuffer.hpp"
+
+class InputReader {
+ public:
+ virtual ~InputReader() =default;
+ virtual int get () =0;
+ virtual int peek () const =0;
+ virtual int peek (size_t n) const =0;
+ virtual bool eof () const =0;
+ virtual bool check (char c) const {return peek() == c;}
+ virtual bool check (const char *s, bool consume=true);
+ virtual void skip (size_t n);
+ virtual bool skipUntil (const char *str);
+ virtual std::string readUntil (const char *str);
+ virtual int find (char c) const;
+ virtual void skipSpace ();
+ virtual int getInt ();
+ virtual bool parseInt (int &val, bool accept_sign=true);
+ virtual bool parseUInt (int base, unsigned &val);
+ virtual bool parseUInt (unsigned &val);
+ virtual char parseDouble (double &val);
+ virtual double getDouble ();
+ virtual std::string getWord ();
+ virtual char getPunct ();
+ virtual std::string getQuotedString (const char *quotechars);
+ virtual std::string getString ();
+ virtual std::string getString (size_t n);
+ virtual std::string getString (const char *delim);
+ virtual std::string getLine ();
+ virtual int parseAttributes (std::map<std::string,std::string> &attr, bool requireValues, const char *quotechars=nullptr);
+ virtual operator bool () const {return !eof();}
+};
+
+
+class StreamInputReader : public InputReader {
+ public:
+ explicit StreamInputReader (std::istream &is) : _is(is) {}
+ int get () override {return _is.get();}
+ int peek () const override {return _is.peek();}
+ int peek (size_t n) const override;
+ bool eof () const override {return !_is || _is.eof();}
+ std::istream& getStream () {return _is;}
+
+ private:
+ std::istream &_is;
+};
+
+
+class BufferInputReader : public InputReader {
+ public:
+ explicit BufferInputReader (InputBuffer &ib) : _ib(&ib) {}
+ void assign (InputBuffer &ib) {_ib = &ib;}
+ int get () override {return _ib->get();}
+ int peek () const override {return _ib->peek();}
+ int peek (size_t n) const override {return _ib->peek(n);}
+ bool eof () const override {return _ib->eof();}
+
+ private:
+ InputBuffer *_ib;
+};
+
+
+/** Implementation of the Knuth-Morris-Pratt search algorithm.
+ * http://www.inf.fh-flensburg.de/lang/algorithmen/pattern/kmpen.htm */
+class StringMatcher {
+ public:
+ StringMatcher () : _charsRead(0) {}
+ explicit StringMatcher (const std::string &pattern) : _charsRead(0) {setPattern(pattern);}
+ void setPattern (const std::string &pattern);
+ bool match (InputReader &ir);
+ std::string read (InputReader &ir);
+ size_t charsRead () const {return _charsRead;}
+
+ private:
+ std::string _pattern;
+ std::vector<size_t> _borders;
+ size_t _charsRead;
+};
+
+#endif