/* -----------------------------------------------------------------------------

   PicoModel Library

   Copyright (c) 2002, Randy Reddig & seaw0lf
   All rights reserved.

   Redistribution and use in source and binary forms, with or without modification,
   are permitted provided that the following conditions are met:

   Redistributions of source code must retain the above copyright notice, this list
   of conditions and the following disclaimer.

   Redistributions in binary form must reproduce the above copyright notice, this
   list of conditions and the following disclaimer in the documentation and/or
   other materials provided with the distribution.

   Neither the names of the copyright holders nor the names of its contributors may
   be used to endorse or promote products derived from this software without
   specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   ----------------------------------------------------------------------------- */



/* marker */
#ifndef PICOINTERNAL_H
#define PICOINTERNAL_H

#include "globaldefs.h"

#ifdef __cplusplus
extern "C"
{
#endif


/* dependencies */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <math.h>

#include "picomodel.h"


/* os dependent replacements */
#if GDEF_OS_WINDOWS
	#define _pico_stricmp stricmp
	#define _pico_strnicmp strnicmp
#else
	#define _pico_stricmp strcasecmp
	#define _pico_strnicmp strncasecmp
#endif


/* constants */
#define PICO_PI 3.14159265358979323846

#define PICO_SEEK_SET    0
#define PICO_SEEK_CUR    1
#define PICO_SEEK_END    2

#define PICO_IOEOF  1
#define PICO_IOERR  2

extern const picoColor_t picoColor_white;

/* types */
#ifndef byte
	typedef unsigned char byte;
#endif

typedef struct picoParser_s
{
	const char *buffer;
	int bufSize;
	char *token;
	int tokenSize;
	int tokenMax;
	const char *cursor;
	const char *max;
	int curLine;
}
picoParser_t;

typedef struct picoMemStream_s
{
	const picoByte_t *buffer;
	int bufSize;
	const picoByte_t *curPos;
	int flag;
}
picoMemStream_t;


/* variables */
extern const picoModule_t   *picoModules[];

extern void                 *( *_pico_ptr_malloc )( size_t );
extern void ( *_pico_ptr_free )( void* );
extern void ( *_pico_ptr_load_file )( const char*, unsigned char**, int* );
extern void ( *_pico_ptr_free_file )( void* );
extern void ( *_pico_ptr_print )( int, const char* );



/* prototypes */

/* memory */
void            *_pico_alloc( size_t size );
void            *_pico_calloc( size_t num, size_t size );
void            *_pico_realloc( void **ptr, size_t oldSize, size_t newSize );
char            *_pico_clone_alloc( const char *str );
void            _pico_free( void *ptr );

/* files */
void            _pico_load_file( const char *name, unsigned char **buffer, int *bufSize );
void            _pico_free_file( void *buffer );

/* strings */
void            _pico_first_token( char *str );
char            *_pico_strltrim( char *str );
char            *_pico_strrtrim( char *str );
int             _pico_strchcount( char *str, int ch );
void            _pico_printf( int level, const char *format, ... );
const char      *_pico_stristr( const char *str, const char *substr );
void            _pico_unixify( char *path );
int             _pico_nofname( const char *path, char *dest, int destSize );
const char      *_pico_nopath( const char *path );
char            *_pico_setfext( char *path, const char *ext );
int             _pico_getline( char *buf, int bufsize, char *dest, int destsize );
char            *_pico_strlwr( char *str );
void            _pico_deduce_shadernames( picoModel_t *model );

/* vectors */
void            _pico_zero_bounds( picoVec3_t mins, picoVec3_t maxs );
void            _pico_expand_bounds( picoVec3_t p, picoVec3_t mins, picoVec3_t maxs );
void            _pico_zero_vec( picoVec3_t vec );
void            _pico_zero_vec2( picoVec2_t vec );
void            _pico_zero_vec4( picoVec4_t vec );
void            _pico_set_vec( picoVec3_t v, float a, float b, float c );
void            _pico_set_vec4( picoVec4_t v, float a, float b, float c, float d );
void            _pico_set_color( picoColor_t c, int r, int g, int b, int a );
void            _pico_copy_color( const picoColor_t src, picoColor_t dest );
void            _pico_copy_vec( picoVec3_t src, picoVec3_t dest );
void            _pico_copy_vec2( picoVec2_t src, picoVec2_t dest );
picoVec_t       _pico_normalize_vec( picoVec3_t vec );
void            _pico_add_vec( picoVec3_t a, picoVec3_t b, picoVec3_t dest );
void            _pico_subtract_vec( picoVec3_t a, picoVec3_t b, picoVec3_t dest );
picoVec_t       _pico_dot_vec( picoVec3_t a, picoVec3_t b );
void            _pico_cross_vec( picoVec3_t a, picoVec3_t b, picoVec3_t dest );
picoVec_t       _pico_calc_plane( picoVec4_t plane, picoVec3_t a, picoVec3_t b, picoVec3_t c );
void            _pico_scale_vec( picoVec3_t v, float scale, picoVec3_t dest );
void            _pico_scale_vec4( picoVec4_t v, float scale, picoVec4_t dest );

/* endian */
int             _pico_big_long( int src );
short           _pico_big_short( short src );
float           _pico_big_float( float src );

int             _pico_little_long( int src );
short           _pico_little_short( short src );
float           _pico_little_float( float src );

/* pico ascii parser */
picoParser_t    *_pico_new_parser( const picoByte_t *buffer, int bufSize );
void            _pico_free_parser( picoParser_t *p );
int             _pico_parse_ex( picoParser_t *p, int allowLFs, int handleQuoted );
char            *_pico_parse_first( picoParser_t *p );
char            *_pico_parse( picoParser_t *p, int allowLFs );
void            _pico_parse_skip_rest( picoParser_t *p );
int             _pico_parse_skip_braced( picoParser_t *p );
int             _pico_parse_check( picoParser_t *p, int allowLFs, char *str );
int             _pico_parse_checki( picoParser_t *p, int allowLFs, char *str );
int             _pico_parse_int( picoParser_t *p, int *out );
int             _pico_parse_int_def( picoParser_t *p, int *out, int def );
int             _pico_parse_float( picoParser_t *p, float *out );
int             _pico_parse_float_def( picoParser_t *p, float *out, float def );
int             _pico_parse_vec( picoParser_t *p, picoVec3_t out );
int             _pico_parse_vec_def( picoParser_t *p, picoVec3_t out, picoVec3_t def );
int             _pico_parse_vec2( picoParser_t *p, picoVec2_t out );
int             _pico_parse_vec2_def( picoParser_t *p, picoVec2_t out, picoVec2_t def );
int             _pico_parse_vec4( picoParser_t *p, picoVec4_t out );
int             _pico_parse_vec4_def( picoParser_t *p, picoVec4_t out, picoVec4_t def );

/* pico memory stream */
picoMemStream_t *_pico_new_memstream( const picoByte_t *buffer, int bufSize );
void            _pico_free_memstream( picoMemStream_t *s );
int             _pico_memstream_read( picoMemStream_t *s, void *buffer, int len );
int             _pico_memstream_getc( picoMemStream_t *s );
int             _pico_memstream_seek( picoMemStream_t *s, long offset, int origin );
long            _pico_memstream_tell( picoMemStream_t *s );
#define         _pico_memstream_eof( _pico_memstream )      ( ( _pico_memstream )->flag & PICO_IOEOF )
#define         _pico_memstream_error( _pico_memstream )    ( ( _pico_memstream )->flag & PICO_IOERR )

/* end marker */
#ifdef __cplusplus
}
#endif

#endif
