openmohaa/code/qcommon/script.h

/*
===========================================================================
Copyright (C) 2015 the OpenMoHAA team

This file is part of OpenMoHAA source code.

OpenMoHAA source code 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 2 of the License,
or (at your option) any later version.

OpenMoHAA source code 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 OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

// script.h: C++ implementation of tokenization/interpretation.

#ifndef __SCRIPT_H__
#define __SCRIPT_H__

#include "class.h"
#include "vector.h"
#include "str.h"

#if defined(ARCHIVE_SUPPORTED)
#include "archive.h"
#endif

#define TOKENCOMMENT  (';')
#define TOKENCOMMENT2 ('#')
#define TOKENEOL      ('\n')
// #define TOKENNULL			('\0')
#define TOKENSPACE   (' ')
#define TOKENSPECIAL ('$')

#define MAXTOKEN     512

typedef struct {
    qboolean tokenready;
    int offset;
    int line;
    char token[MAXTOKEN];
} scriptmarker_t;

typedef struct {
    // const char		*macroName;
    // const char		*macroText;
    str macroName;
    str macroText;
} macro;

class Script : public Class
{
protected:
    qboolean tokenready;

    str filename;
    const char* script_p;
    const char* end_p;
    Container<macro*> macrolist;

    int line;
    char token[MAXTOKEN];

    qboolean releaseBuffer;
    qboolean hasError;

    qboolean AtComment(void);
    void CheckOverflow(void);

public:
    const char* buffer;
    size_t length;

    CLASS_PROTOTYPE(Script);

#if defined(ARCHIVE_SUPPORTED)
    void Archive(Archiver& arc) override;
#endif

    ~Script();
    Script(const char* filename);
    Script();

    void Close(void);
    const char* Filename(void);
    int GetLineNumber(void);
    void Reset(void);
    void MarkPosition(scriptmarker_t* mark);
    void RestorePosition(const scriptmarker_t* mark);
    qboolean SkipToEOL(void);
    void SkipWhiteSpace(qboolean crossline);
    void SkipNonToken(qboolean crossline);
    qboolean TokenAvailable(qboolean crossline);
    qboolean CommentAvailable(qboolean crossline);
    void UnGetToken(void);
    qboolean AtString(qboolean crossline);
    qboolean AtOpenParen(qboolean crossline);
    qboolean AtCloseParen(qboolean crossline);
    qboolean AtComma(qboolean crossline);
    qboolean AtDot(qboolean crossline);
    qboolean AtAssignment(qboolean crossline);
    const char* GetToken(qboolean crossline);
    const char* GetLine(qboolean crossline);
    const char* GetRaw(void);
    const char* GetString(qboolean crossline);
    qboolean GetSpecific(const char* string);
    qboolean GetBoolean(qboolean crossline);
    int GetInteger(qboolean crossline);
    double GetDouble(qboolean crossline);
    float GetFloat(qboolean crossline);
    Vector GetVector(qboolean crossline);
    int LinesInFile(void);
    void Parse(const char* data, size_t length, const char* name);
    void LoadFile(const char* name);
    void LoadFile(const char* name, int length, const char* buf);
    const char* Token(void);
    void AddMacroDefinition(qboolean crossline);
    const char* GetMacroString(const char* theMacroName);
    char* EvaluateMacroString(const char* theMacroString);
    float EvaluateMacroMath(float value, float newval, char oper);
    const char* GetExprToken(const char* ptr, char* token);
    const char* GrabNextToken(qboolean crossline);
    qboolean isMacro(void);

    qboolean EndOfFile();
    qboolean isValid(void);

    Container<macro*>* GetMacroList() { return &macrolist; }
    void AddMacro(const char* name, const char* value);
};

#if defined(ARCHIVE_SUPPORTED)

inline void Script::Archive(Archiver& arc)
{
    int pos;

    arc.ArchiveBoolean(&tokenready);

    arc.ArchiveString(&filename);
    if (arc.Loading()) {
        //
        // load the file in
        //
        LoadFile(filename.c_str());
    }

    if (!arc.Loading()) {
        //
        // save out current pointer as an offset
        //
        pos = script_p - buffer;
    }
    arc.ArchiveInteger(&pos);
    if (arc.Loading()) {
        //
        // restore the script pointer
        //
        script_p = buffer + pos;
    }

    // const char	*end_p;
    // Container<macro *> macrolist;

    arc.ArchiveInteger(&line);
    arc.ArchiveRaw(&token, sizeof(token));

    // qboolean		releaseBuffer;
}
#endif

#endif