mirror of
https://github.com/kevinbentley/Descent3.git
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92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
/*
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* Descent 3
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* Copyright (C) 2024 Parallax Software
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// InfFile.h: interface for the InfFile class.
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//
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//////////////////////////////////////////////////////////////////////
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#ifndef INFFILE_H
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#define INFFILE_H
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#if _MSC_VER >= 1000
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#pragma once
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#endif // _MSC_VER >= 1000
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#include "pstypes.h"
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#include "psclass.h"
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struct CFILE;
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enum InfFileError {
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INFFILE_LINELEN = 256,
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INFFILE_CUSTOM = -128,
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INFFILE_ERROR = -1,
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INFFILE_COMMENT = -2,
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INFFILE_EOL = -3,
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INFFILE_SYMBOL = 1024,
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};
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class InfFile {
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public:
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InfFile();
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virtual ~InfFile();
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// opens an inf file, pass in a lexical analyzer that will return a command index.
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// tag_check is a string that must appear at the very beginning of the file.
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// lexfn is a function to match a command to a number. num <= 0 and num >=1024 are taken.
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bool Open(const char *filename, const char *tag_check, int (*lexfn)(const char *command));
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// closes the file
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void Close();
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// read a command line. returns false on eof.
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bool ReadLine();
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// parses a line of 'code'. return value from the lexfn
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// check INFFILE constants above. (any value less than 0, you should read in a new line.)
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int ParseLine(char *operand, int oprlen);
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private:
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CFILE *m_fp; // file object.
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int (*m_lexfn)(const char *); // lexical analyzer.
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char m_linetext[INFFILE_LINELEN];
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char *m_lineptr; // pointer to current text line.
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char *m_endptr; // pointer to last character in text line
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int m_line; // line #
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struct sym_info // full runtime symbol
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{
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char name[PSPATHNAME_LEN];
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char *text;
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};
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// inf file symbol list
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tList<sym_info> m_sym_list; // symbol list.
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private:
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void AddSymbol(const char *name, const char *text);
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const char *GetSymbolText(const char *name);
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void FreeSymbols();
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public:
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// line number
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int line() const { return m_line; };
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};
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#endif
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