/*
===========================================================================
Return to Castle Wolfenstein single player GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company.
This file is part of the Return to Castle Wolfenstein single player GPL Source Code (RTCW SP Source Code).
RTCW SP 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 3 of the License, or
(at your option) any later version.
RTCW SP 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 RTCW SP Source Code. If not, see .
In addition, the RTCW SP Source Code is also subject to certain additional terms.
You should have received a copy of these additional terms immediately following the
terms and conditions of the GNU General Public License which accompanied the RTCW SP
Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms,
you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
/*****************************************************************************
* name: l_script.c
*
* desc: lexicographical parser
*
*
*****************************************************************************/
//#define SCREWUP
//#define BOTLIB
//#define MEQCC
//#define BSPC
#ifdef SCREWUP
#include
#include
#include
#include
#include
#include "l_memory.h"
#include "l_script.h"
typedef enum {qfalse, qtrue} qboolean;
#endif //SCREWUP
#ifdef BOTLIB
//include files for usage in the bot library
#include "../game/q_shared.h"
#include "botlib.h"
#include "be_interface.h"
#include "l_script.h"
#include "l_memory.h"
#include "l_log.h"
#include "l_libvar.h"
#endif //BOTLIB
#ifdef MEQCC
//include files for usage in MrElusive's QuakeC Compiler
#include "qcc.h"
#include "l_script.h"
#include "l_memory.h"
#include "l_log.h"
#define qtrue true
#define qfalse false
#endif //MEQCC
#ifdef BSPC
//include files for usage in the BSP Converter
#include "../bspc/qbsp.h"
#include "../bspc/l_log.h"
#include "../bspc/l_mem.h"
#define qtrue true
#define qfalse false
#endif //BSPC
#define PUNCTABLE
//longer punctuations first
punctuation_t default_punctuations[] =
{
//binary operators
{">>=",P_RSHIFT_ASSIGN, NULL},
{"<<=",P_LSHIFT_ASSIGN, NULL},
//
{"...",P_PARMS, NULL},
//define merge operator
{"##",P_PRECOMPMERGE, NULL},
//logic operators
{"&&",P_LOGIC_AND, NULL},
{"||",P_LOGIC_OR, NULL},
{">=",P_LOGIC_GEQ, NULL},
{"<=",P_LOGIC_LEQ, NULL},
{"==",P_LOGIC_EQ, NULL},
{"!=",P_LOGIC_UNEQ, NULL},
//arithmatic operators
{"*=",P_MUL_ASSIGN, NULL},
{"/=",P_DIV_ASSIGN, NULL},
{"%=",P_MOD_ASSIGN, NULL},
{"+=",P_ADD_ASSIGN, NULL},
{"-=",P_SUB_ASSIGN, NULL},
{"++",P_INC, NULL},
{"--",P_DEC, NULL},
//binary operators
{"&=",P_BIN_AND_ASSIGN, NULL},
{"|=",P_BIN_OR_ASSIGN, NULL},
{"^=",P_BIN_XOR_ASSIGN, NULL},
{">>",P_RSHIFT, NULL},
{"<<",P_LSHIFT, NULL},
//reference operators
{"->",P_POINTERREF, NULL},
//C++
{"::",P_CPP1, NULL},
{".*",P_CPP2, NULL},
//arithmatic operators
{"*",P_MUL, NULL},
{"/",P_DIV, NULL},
{"%",P_MOD, NULL},
{"+",P_ADD, NULL},
{"-",P_SUB, NULL},
{"=",P_ASSIGN, NULL},
//binary operators
{"&",P_BIN_AND, NULL},
{"|",P_BIN_OR, NULL},
{"^",P_BIN_XOR, NULL},
{"~",P_BIN_NOT, NULL},
//logic operators
{"!",P_LOGIC_NOT, NULL},
{">",P_LOGIC_GREATER, NULL},
{"<",P_LOGIC_LESS, NULL},
//reference operator
{".",P_REF, NULL},
//seperators
{",",P_COMMA, NULL},
{";",P_SEMICOLON, NULL},
//label indication
{":",P_COLON, NULL},
//if statement
{"?",P_QUESTIONMARK, NULL},
//embracements
{"(",P_PARENTHESESOPEN, NULL},
{")",P_PARENTHESESCLOSE, NULL},
{"{",P_BRACEOPEN, NULL},
{"}",P_BRACECLOSE, NULL},
{"[",P_SQBRACKETOPEN, NULL},
{"]",P_SQBRACKETCLOSE, NULL},
//
{"\\",P_BACKSLASH, NULL},
//precompiler operator
{"#",P_PRECOMP, NULL},
#ifdef DOLLAR
{"$",P_DOLLAR, NULL},
#endif //DOLLAR
{NULL, 0}
};
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void PS_CreatePunctuationTable( script_t *script, punctuation_t *punctuations ) {
int i;
punctuation_t *p, *lastp, *newp;
//get memory for the table
if ( !script->punctuationtable ) {
script->punctuationtable = (punctuation_t **)
GetMemory( 256 * sizeof( punctuation_t * ) );
}
memset( script->punctuationtable, 0, 256 * sizeof( punctuation_t * ) );
//add the punctuations in the list to the punctuation table
for ( i = 0; punctuations[i].p; i++ )
{
newp = &punctuations[i];
lastp = NULL;
//sort the punctuations in this table entry on length (longer punctuations first)
for ( p = script->punctuationtable[(unsigned int) newp->p[0]]; p; p = p->next )
{
if ( strlen( p->p ) < strlen( newp->p ) ) {
newp->next = p;
if ( lastp ) {
lastp->next = newp;
} else { script->punctuationtable[(unsigned int) newp->p[0]] = newp;}
break;
} //end if
lastp = p;
} //end for
if ( !p ) {
newp->next = NULL;
if ( lastp ) {
lastp->next = newp;
} else { script->punctuationtable[(unsigned int) newp->p[0]] = newp;}
} //end if
} //end for
} //end of the function PS_CreatePunctuationTable
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
char *PunctuationFromNum( script_t *script, int num ) {
int i;
for ( i = 0; script->punctuations[i].p; i++ )
{
if ( script->punctuations[i].n == num ) {
return script->punctuations[i].p;
}
} //end for
return "unkown punctuation";
} //end of the function PunctuationFromNum
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void QDECL ScriptError( script_t *script, char *str, ... ) {
char text[1024];
va_list ap;
if ( script->flags & SCFL_NOERRORS ) {
return;
}
va_start( ap, str );
// vsprintf( text, str, ap );
Q_vsnprintf (text, sizeof(text), str, ap);
va_end( ap );
#ifdef BOTLIB
botimport.Print( PRT_ERROR, "file %s, line %d: %s\n", script->filename, script->line, text );
#endif //BOTLIB
#ifdef MEQCC
printf( "error: file %s, line %d: %s\n", script->filename, script->line, text );
#endif //MEQCC
#ifdef BSPC
Log_Print( "error: file %s, line %d: %s\n", script->filename, script->line, text );
#endif //BSPC
} //end of the function ScriptError
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void QDECL ScriptWarning( script_t *script, char *str, ... ) {
char text[1024];
va_list ap;
if ( script->flags & SCFL_NOWARNINGS ) {
return;
}
va_start( ap, str );
// vsprintf( text, str, ap );
Q_vsnprintf (text, sizeof(text), str, ap);
va_end( ap );
#ifdef BOTLIB
botimport.Print( PRT_WARNING, "file %s, line %d: %s\n", script->filename, script->line, text );
#endif //BOTLIB
#ifdef MEQCC
printf( "warning: file %s, line %d: %s\n", script->filename, script->line, text );
#endif //MEQCC
#ifdef BSPC
Log_Print( "warning: file %s, line %d: %s\n", script->filename, script->line, text );
#endif //BSPC
} //end of the function ScriptWarning
//===========================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//===========================================================================
void SetScriptPunctuations( script_t *script, punctuation_t *p ) {
#ifdef PUNCTABLE
if ( p ) {
PS_CreatePunctuationTable( script, p );
} else { PS_CreatePunctuationTable( script, default_punctuations );}
#endif //PUNCTABLE
if ( p ) {
script->punctuations = p;
} else { script->punctuations = default_punctuations;}
} //end of the function SetScriptPunctuations
//============================================================================
// Reads spaces, tabs, C-like comments etc.
// When a newline character is found the scripts line counter is increased.
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadWhiteSpace( script_t *script ) {
while ( 1 )
{
//skip white space
while ( *script->script_p <= ' ' )
{
if ( !*script->script_p ) {
return 0;
}
if ( *script->script_p == '\n' ) {
script->line++;
}
script->script_p++;
} //end while
//skip comments
if ( *script->script_p == '/' ) {
//comments //
if ( *( script->script_p + 1 ) == '/' ) {
script->script_p++;
do
{
script->script_p++;
if ( !*script->script_p ) {
return 0;
}
} //end do
while ( *script->script_p != '\n' );
script->line++;
script->script_p++;
if ( !*script->script_p ) {
return 0;
}
continue;
} //end if
//comments /* */
else if ( *( script->script_p + 1 ) == '*' ) {
script->script_p++;
do
{
script->script_p++;
if ( !*script->script_p ) {
return 0;
}
if ( *script->script_p == '\n' ) {
script->line++;
}
} //end do
while ( !( *script->script_p == '*' && *( script->script_p + 1 ) == '/' ) );
script->script_p++;
if ( !*script->script_p ) {
return 0;
}
script->script_p++;
if ( !*script->script_p ) {
return 0;
}
continue;
} //end if
} //end if
break;
} //end while
return 1;
} //end of the function PS_ReadWhiteSpace
//============================================================================
// Reads an escape character.
//
// Parameter: script : script to read from
// ch : place to store the read escape character
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadEscapeCharacter( script_t *script, char *ch ) {
int c, val, i;
//step over the leading '\\'
script->script_p++;
//determine the escape character
switch ( *script->script_p )
{
case '\\': c = '\\'; break;
case 'n': c = '\n'; break;
case 'r': c = '\r'; break;
case 't': c = '\t'; break;
case 'v': c = '\v'; break;
case 'b': c = '\b'; break;
case 'f': c = '\f'; break;
case 'a': c = '\a'; break;
case '\'': c = '\''; break;
case '\"': c = '\"'; break;
case '\?': c = '\?'; break;
case 'x':
{
script->script_p++;
for ( i = 0, val = 0; ; i++, script->script_p++ )
{
c = *script->script_p;
if ( c >= '0' && c <= '9' ) {
c = c - '0';
} else if ( c >= 'A' && c <= 'Z' ) {
c = c - 'A' + 10;
} else if ( c >= 'a' && c <= 'z' ) {
c = c - 'a' + 10;
} else { break;}
val = ( val << 4 ) + c;
} //end for
script->script_p--;
if ( val > 0xFF ) {
ScriptWarning( script, "too large value in escape character" );
val = 0xFF;
} //end if
c = val;
break;
} //end case
default: //NOTE: decimal ASCII code, NOT octal
{
if ( *script->script_p < '0' || *script->script_p > '9' ) {
ScriptError( script, "unknown escape char" );
}
for ( i = 0, val = 0; ; i++, script->script_p++ )
{
c = *script->script_p;
if ( c >= '0' && c <= '9' ) {
c = c - '0';
} else { break;}
val = val * 10 + c;
} //end for
script->script_p--;
if ( val > 0xFF ) {
ScriptWarning( script, "too large value in escape character" );
val = 0xFF;
} //end if
c = val;
break;
} //end default
} //end switch
//step over the escape character or the last digit of the number
script->script_p++;
//store the escape character
*ch = c;
//succesfully read escape character
return 1;
} //end of the function PS_ReadEscapeCharacter
//============================================================================
// Reads C-like string. Escape characters are interpretted.
// Quotes are included with the string.
// Reads two strings with a white space between them as one string.
//
// Parameter: script : script to read from
// token : buffer to store the string
// Returns: qtrue when a string was read succesfully
// Changes Globals: -
//============================================================================
int PS_ReadString( script_t *script, token_t *token, int quote ) {
int len, tmpline;
char *tmpscript_p;
if ( quote == '\"' ) {
token->type = TT_STRING;
} else { token->type = TT_LITERAL;}
len = 0;
//leading quote
token->string[len++] = *script->script_p++;
//
while ( 1 )
{
//minus 2 because trailing double quote and zero have to be appended
if ( len >= MAX_TOKEN - 2 ) {
ScriptError( script, "string longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
//if there is an escape character and
//if escape characters inside a string are allowed
if ( *script->script_p == '\\' && !( script->flags & SCFL_NOSTRINGESCAPECHARS ) ) {
if ( !PS_ReadEscapeCharacter( script, &token->string[len] ) ) {
token->string[len] = 0;
return 0;
} //end if
len++;
} //end if
//if a trailing quote
else if ( *script->script_p == quote ) {
//step over the double quote
script->script_p++;
//if white spaces in a string are not allowed
if ( script->flags & SCFL_NOSTRINGWHITESPACES ) {
break;
}
//
tmpscript_p = script->script_p;
tmpline = script->line;
//read unusefull stuff between possible two following strings
if ( !PS_ReadWhiteSpace( script ) ) {
script->script_p = tmpscript_p;
script->line = tmpline;
break;
} //end if
//if there's no leading double qoute
if ( *script->script_p != quote ) {
script->script_p = tmpscript_p;
script->line = tmpline;
break;
} //end if
//step over the new leading double quote
script->script_p++;
} //end if
else
{
if ( *script->script_p == '\0' ) {
token->string[len] = 0;
ScriptError( script, "missing trailing quote" );
return 0;
} //end if
if ( *script->script_p == '\n' ) {
token->string[len] = 0;
ScriptError( script, "newline inside string %s", token->string );
return 0;
} //end if
token->string[len++] = *script->script_p++;
} //end else
} //end while
//trailing quote
token->string[len++] = quote;
//end string with a zero
token->string[len] = '\0';
//the sub type is the length of the string
token->subtype = len;
return 1;
} //end of the function PS_ReadString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadName( script_t *script, token_t *token ) {
int len = 0;
char c;
token->type = TT_NAME;
do
{
token->string[len++] = *script->script_p++;
if ( len >= MAX_TOKEN ) {
ScriptError( script, "name longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
c = *script->script_p;
} while ( ( c >= 'a' && c <= 'z' ) ||
( c >= 'A' && c <= 'Z' ) ||
( c >= '0' && c <= '9' ) ||
c == '_' );
token->string[len] = '\0';
//the sub type is the length of the name
token->subtype = len;
return 1;
} //end of the function PS_ReadName
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void NumberValue( char *string, int subtype, unsigned long int *intvalue,
long double *floatvalue ) {
unsigned long int dotfound = 0;
*intvalue = 0;
*floatvalue = 0;
//floating point number
if ( subtype & TT_FLOAT ) {
while ( *string )
{
if ( *string == '.' ) {
if ( dotfound ) {
return;
}
dotfound = 10;
string++;
} //end if
if ( dotfound ) {
*floatvalue = *floatvalue + ( long double )( *string - '0' ) /
(long double) dotfound;
dotfound *= 10;
} //end if
else
{
*floatvalue = *floatvalue * 10.0 + ( long double )( *string - '0' );
} //end else
string++;
} //end while
*intvalue = (unsigned long) *floatvalue;
} //end if
else if ( subtype & TT_DECIMAL ) {
while ( *string ) *intvalue = *intvalue * 10 + ( *string++ - '0' );
*floatvalue = *intvalue;
} //end else if
else if ( subtype & TT_HEX ) {
//step over the leading 0x or 0X
string += 2;
while ( *string )
{
*intvalue <<= 4;
if ( *string >= 'a' && *string <= 'f' ) {
*intvalue += *string - 'a' + 10;
} else if ( *string >= 'A' && *string <= 'F' ) {
*intvalue += *string - 'A' + 10;
} else { *intvalue += *string - '0';}
string++;
} //end while
*floatvalue = *intvalue;
} //end else if
else if ( subtype & TT_OCTAL ) {
//step over the first zero
string += 1;
while ( *string ) *intvalue = ( *intvalue << 3 ) + ( *string++ - '0' );
*floatvalue = *intvalue;
} //end else if
else if ( subtype & TT_BINARY ) {
//step over the leading 0b or 0B
string += 2;
while ( *string ) *intvalue = ( *intvalue << 1 ) + ( *string++ - '0' );
*floatvalue = *intvalue;
} //end else if
} //end of the function NumberValue
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadNumber( script_t *script, token_t *token ) {
int len = 0, i;
int octal, dot;
char c;
// unsigned long int intvalue = 0;
// long double floatvalue = 0;
token->type = TT_NUMBER;
//check for a hexadecimal number
if ( *script->script_p == '0' &&
( *( script->script_p + 1 ) == 'x' ||
*( script->script_p + 1 ) == 'X' ) ) {
token->string[len++] = *script->script_p++;
token->string[len++] = *script->script_p++;
c = *script->script_p;
//hexadecimal
while ( ( c >= '0' && c <= '9' ) ||
( c >= 'a' && c <= 'f' ) ||
( c >= 'A' && c <= 'A' ) )
{
token->string[len++] = *script->script_p++;
if ( len >= MAX_TOKEN ) {
ScriptError( script, "hexadecimal number longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
c = *script->script_p;
} //end while
token->subtype |= TT_HEX;
} //end if
#ifdef BINARYNUMBERS
//check for a binary number
else if ( *script->script_p == '0' &&
( *( script->script_p + 1 ) == 'b' ||
*( script->script_p + 1 ) == 'B' ) ) {
token->string[len++] = *script->script_p++;
token->string[len++] = *script->script_p++;
c = *script->script_p;
//hexadecimal
while ( c == '0' || c == '1' )
{
token->string[len++] = *script->script_p++;
if ( len >= MAX_TOKEN ) {
ScriptError( script, "binary number longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
c = *script->script_p;
} //end while
token->subtype |= TT_BINARY;
} //end if
#endif //BINARYNUMBERS
else //decimal or octal integer or floating point number
{
octal = qfalse;
dot = qfalse;
if ( *script->script_p == '0' ) {
octal = qtrue;
}
while ( 1 )
{
token->string[len++] = *script->script_p++;
if ( len >= MAX_TOKEN ) {
ScriptError( script, "number longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
c = *script->script_p;
if ( c == '.' ) {
dot = qtrue;
} else if ( c == '8' || c == '9' ) {
octal = qfalse;
} else if ( c < '0' || c > '9' ) {
break;
}
} //end while
if ( octal ) {
token->subtype |= TT_OCTAL;
} else { token->subtype |= TT_DECIMAL;}
if ( dot ) {
token->subtype |= TT_FLOAT;
}
} //end else
for ( i = 0; i < 2; i++ )
{
c = *script->script_p;
//check for a LONG number
if ( c == 'l' || c == 'L' &&
!( token->subtype & TT_LONG ) ) {
script->script_p++;
token->subtype |= TT_LONG;
} //end if
//check for an UNSIGNED number
else if ( c == 'u' || c == 'U' &&
!( token->subtype & ( TT_UNSIGNED | TT_FLOAT ) ) ) {
script->script_p++;
token->subtype |= TT_UNSIGNED;
} //end if
} //end for
token->string[len] = '\0';
#ifdef NUMBERVALUE
NumberValue( token->string, token->subtype, &token->intvalue, &token->floatvalue );
#endif //NUMBERVALUE
if ( !( token->subtype & TT_FLOAT ) ) {
token->subtype |= TT_INTEGER;
}
return 1;
} //end of the function PS_ReadNumber
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadLiteral( script_t *script, token_t *token ) {
token->type = TT_LITERAL;
//first quote
token->string[0] = *script->script_p++;
//check for end of file
if ( !*script->script_p ) {
ScriptError( script, "end of file before trailing \'" );
return 0;
} //end if
//if it is an escape character
if ( *script->script_p == '\\' ) {
if ( !PS_ReadEscapeCharacter( script, &token->string[1] ) ) {
return 0;
}
} //end if
else
{
token->string[1] = *script->script_p++;
} //end else
//check for trailing quote
if ( *script->script_p != '\'' ) {
ScriptWarning( script, "too many characters in literal, ignored" );
while ( *script->script_p &&
*script->script_p != '\'' &&
*script->script_p != '\n' )
{
script->script_p++;
} //end while
if ( *script->script_p == '\'' ) {
script->script_p++;
}
} //end if
//store the trailing quote
token->string[2] = *script->script_p++;
//store trailing zero to end the string
token->string[3] = '\0';
//the sub type is the integer literal value
token->subtype = token->string[1];
//
return 1;
} //end of the function PS_ReadLiteral
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadPunctuation( script_t *script, token_t *token ) {
int len;
char *p;
punctuation_t *punc;
#ifdef PUNCTABLE
for ( punc = script->punctuationtable[(unsigned int)*script->script_p]; punc; punc = punc->next )
{
#else
int i;
for ( i = 0; script->punctuations[i].p; i++ )
{
punc = &script->punctuations[i];
#endif //PUNCTABLE
p = punc->p;
len = (int)strlen( p );
//if the script contains at least as much characters as the punctuation
if ( script->script_p + len <= script->end_p ) {
//if the script contains the punctuation
if ( !strncmp( script->script_p, p, len ) ) {
strncpy( token->string, p, MAX_TOKEN );
script->script_p += len;
token->type = TT_PUNCTUATION;
//sub type is the number of the punctuation
token->subtype = punc->n;
return 1;
} //end if
} //end if
} //end for
return 0;
} //end of the function PS_ReadPunctuation
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadPrimitive( script_t *script, token_t *token ) {
int len;
len = 0;
while ( *script->script_p > ' ' && *script->script_p != ';' )
{
if ( len >= MAX_TOKEN ) {
ScriptError( script, "primitive token longer than MAX_TOKEN = %d", MAX_TOKEN );
return 0;
} //end if
token->string[len++] = *script->script_p++;
} //end while
token->string[len] = 0;
//copy the token into the script structure
memcpy( &script->token, token, sizeof( token_t ) );
//primitive reading successfull
return 1;
} //end of the function PS_ReadPrimitive
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ReadToken( script_t *script, token_t *token ) {
//if there is a token available (from UnreadToken)
if ( script->tokenavailable ) {
script->tokenavailable = 0;
memcpy( token, &script->token, sizeof( token_t ) );
return 1;
} //end if
//save script pointer
script->lastscript_p = script->script_p;
//save line counter
script->lastline = script->line;
//clear the token stuff
memset( token, 0, sizeof( token_t ) );
//start of the white space
script->whitespace_p = script->script_p;
token->whitespace_p = script->script_p;
//read unusefull stuff
if ( !PS_ReadWhiteSpace( script ) ) {
return 0;
}
//end of the white space
script->endwhitespace_p = script->script_p;
token->endwhitespace_p = script->script_p;
//line the token is on
token->line = script->line;
//number of lines crossed before token
token->linescrossed = script->line - script->lastline;
//if there is a leading double quote
if ( *script->script_p == '\"' ) {
if ( !PS_ReadString( script, token, '\"' ) ) {
return 0;
}
} //end if
//if an literal
else if ( *script->script_p == '\'' ) {
//if (!PS_ReadLiteral(script, token)) return 0;
if ( !PS_ReadString( script, token, '\'' ) ) {
return 0;
}
} //end if
//if there is a number
else if ( ( *script->script_p >= '0' && *script->script_p <= '9' ) ||
( *script->script_p == '.' &&
( *( script->script_p + 1 ) >= '0' && *( script->script_p + 1 ) <= '9' ) ) ) {
if ( !PS_ReadNumber( script, token ) ) {
return 0;
}
} //end if
//if this is a primitive script
else if ( script->flags & SCFL_PRIMITIVE ) {
return PS_ReadPrimitive( script, token );
} //end else if
//if there is a name
else if ( ( *script->script_p >= 'a' && *script->script_p <= 'z' ) ||
( *script->script_p >= 'A' && *script->script_p <= 'Z' ) ||
*script->script_p == '_' ) {
if ( !PS_ReadName( script, token ) ) {
return 0;
}
} //end if
//check for punctuations
else if ( !PS_ReadPunctuation( script, token ) ) {
ScriptError( script, "can't read token" );
return 0;
} //end if
//copy the token into the script structure
memcpy( &script->token, token, sizeof( token_t ) );
//succesfully read a token
return 1;
} //end of the function PS_ReadToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ExpectTokenString( script_t *script, char *string ) {
token_t token;
if ( !PS_ReadToken( script, &token ) ) {
ScriptError( script, "couldn't find expected %s", string );
return 0;
} //end if
if ( strcmp( token.string, string ) ) {
ScriptError( script, "expected %s, found %s", string, token.string );
return 0;
} //end if
return 1;
} //end of the function PS_ExpectToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ExpectTokenType( script_t *script, int type, int subtype, token_t *token ) {
char str[MAX_TOKEN];
if ( !PS_ReadToken( script, token ) ) {
ScriptError( script, "couldn't read expected token" );
return 0;
} //end if
if ( token->type != type ) {
if ( type == TT_STRING ) {
strcpy( str, "string" );
}
if ( type == TT_LITERAL ) {
strcpy( str, "literal" );
}
if ( type == TT_NUMBER ) {
strcpy( str, "number" );
}
if ( type == TT_NAME ) {
strcpy( str, "name" );
}
if ( type == TT_PUNCTUATION ) {
strcpy( str, "punctuation" );
}
ScriptError( script, "expected a %s, found %s", str, token->string );
return 0;
} //end if
if ( token->type == TT_NUMBER ) {
if ( ( token->subtype & subtype ) != subtype ) {
if ( subtype & TT_DECIMAL ) {
strcpy( str, "decimal" );
}
if ( subtype & TT_HEX ) {
strcpy( str, "hex" );
}
if ( subtype & TT_OCTAL ) {
strcpy( str, "octal" );
}
if ( subtype & TT_BINARY ) {
strcpy( str, "binary" );
}
if ( subtype & TT_LONG ) {
strcat( str, " long" );
}
if ( subtype & TT_UNSIGNED ) {
strcat( str, " unsigned" );
}
if ( subtype & TT_FLOAT ) {
strcat( str, " float" );
}
if ( subtype & TT_INTEGER ) {
strcat( str, " integer" );
}
ScriptError( script, "expected %s, found %s", str, token->string );
return 0;
} //end if
} //end if
else if ( token->type == TT_PUNCTUATION ) {
if ( subtype < 0 ) {
ScriptError( script, "BUG: wrong punctuation subtype" );
return 0;
} //end if
if ( token->subtype != subtype ) {
ScriptError( script, "expected %s, found %s",
script->punctuations[subtype], token->string );
return 0;
} //end if
} //end else if
return 1;
} //end of the function PS_ExpectTokenType
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_ExpectAnyToken( script_t *script, token_t *token ) {
if ( !PS_ReadToken( script, token ) ) {
ScriptError( script, "couldn't read expected token" );
return 0;
} //end if
else
{
return 1;
} //end else
} //end of the function PS_ExpectAnyToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_CheckTokenString( script_t *script, char *string ) {
token_t tok;
if ( !PS_ReadToken( script, &tok ) ) {
return 0;
}
//if the token is available
if ( !strcmp( tok.string, string ) ) {
return 1;
}
//token not available
script->script_p = script->lastscript_p;
return 0;
} //end of the function PS_CheckTokenString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_CheckTokenType( script_t *script, int type, int subtype, token_t *token ) {
token_t tok;
if ( !PS_ReadToken( script, &tok ) ) {
return 0;
}
//if the type matches
if ( tok.type == type &&
( tok.subtype & subtype ) == subtype ) {
memcpy( token, &tok, sizeof( token_t ) );
return 1;
} //end if
//token is not available
script->script_p = script->lastscript_p;
return 0;
} //end of the function PS_CheckTokenType
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int PS_SkipUntilString( script_t *script, char *string ) {
token_t token;
while ( PS_ReadToken( script, &token ) )
{
if ( !strcmp( token.string, string ) ) {
return 1;
}
} //end while
return 0;
} //end of the function PS_SkipUntilString
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PS_UnreadLastToken( script_t *script ) {
script->tokenavailable = 1;
} //end of the function UnreadLastToken
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void PS_UnreadToken( script_t *script, token_t *token ) {
memcpy( &script->token, token, sizeof( token_t ) );
script->tokenavailable = 1;
} //end of the function UnreadToken
//============================================================================
// returns the next character of the read white space, returns NULL if none
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
char PS_NextWhiteSpaceChar( script_t *script ) {
if ( script->whitespace_p != script->endwhitespace_p ) {
return *script->whitespace_p++;
} //end if
else
{
return 0;
} //end else
} //end of the function PS_NextWhiteSpaceChar
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void StripDoubleQuotes( char *string ) {
if ( *string == '\"' ) {
strcpy( string, string + 1 );
} //end if
if ( string[strlen( string ) - 1] == '\"' ) {
string[strlen( string ) - 1] = '\0';
} //end if
} //end of the function StripDoubleQuotes
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void StripSingleQuotes( char *string ) {
if ( *string == '\'' ) {
strcpy( string, string + 1 );
} //end if
if ( string[strlen( string ) - 1] == '\'' ) {
string[strlen( string ) - 1] = '\0';
} //end if
} //end of the function StripSingleQuotes
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
long double ReadSignedFloat( script_t *script ) {
token_t token;
long double sign = 1;
PS_ExpectAnyToken( script, &token );
if ( !strcmp( token.string, "-" ) ) {
sign = -1;
PS_ExpectTokenType( script, TT_NUMBER, 0, &token );
} //end if
else if ( token.type != TT_NUMBER ) {
ScriptError( script, "expected float value, found %s\n", token.string );
} //end else if
return sign * token.floatvalue;
} //end of the function ReadSignedFloat
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
signed long int ReadSignedInt( script_t *script ) {
token_t token;
signed long int sign = 1;
PS_ExpectAnyToken( script, &token );
if ( !strcmp( token.string, "-" ) ) {
sign = -1;
PS_ExpectTokenType( script, TT_NUMBER, TT_INTEGER, &token );
} //end if
else if ( token.type != TT_NUMBER || token.subtype == TT_FLOAT ) {
ScriptError( script, "expected integer value, found %s\n", token.string );
} //end else if
return sign * token.intvalue;
} //end of the function ReadSignedInt
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void SetScriptFlags( script_t *script, int flags ) {
script->flags = flags;
} //end of the function SetScriptFlags
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int GetScriptFlags( script_t *script ) {
return script->flags;
} //end of the function GetScriptFlags
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void ResetScript( script_t *script ) {
//pointer in script buffer
script->script_p = script->buffer;
//pointer in script buffer before reading token
script->lastscript_p = script->buffer;
//begin of white space
script->whitespace_p = NULL;
//end of white space
script->endwhitespace_p = NULL;
//set if there's a token available in script->token
script->tokenavailable = 0;
//
script->line = 1;
script->lastline = 1;
//clear the saved token
memset( &script->token, 0, sizeof( token_t ) );
} //end of the function ResetScript
//============================================================================
// returns true if at the end of the script
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int EndOfScript( script_t *script ) {
return script->script_p >= script->end_p;
} //end of the function EndOfScript
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int NumLinesCrossed( script_t *script ) {
return script->line - script->lastline;
} //end of the function NumLinesCrossed
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int ScriptSkipTo( script_t *script, char *value ) {
int len;
char firstchar;
firstchar = *value;
len = (int)strlen( value );
do
{
if ( !PS_ReadWhiteSpace( script ) ) {
return 0;
}
if ( *script->script_p == firstchar ) {
if ( !strncmp( script->script_p, value, len ) ) {
return 1;
} //end if
} //end if
script->script_p++;
} while ( 1 );
} //end of the function ScriptSkipTo
#ifndef BOTLIB
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
int FileLength( FILE *fp ) {
int pos;
int end;
pos = ftell( fp );
fseek( fp, 0, SEEK_END );
end = ftell( fp );
fseek( fp, pos, SEEK_SET );
return end;
} //end of the function FileLength
#endif
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
script_t *LoadScriptFile( char *filename ) {
#ifdef BOTLIB
fileHandle_t fp;
char pathname[MAX_QPATH];
#else
FILE *fp;
#endif
int length;
void *buffer;
script_t *script;
#ifdef BOTLIB
Com_sprintf( pathname, MAX_QPATH, "botfiles/%s", filename );
length = botimport.FS_FOpenFile( pathname, &fp, FS_READ );
if ( !fp ) {
return NULL;
}
#else
fp = fopen( filename, "rb" );
if ( !fp ) {
return NULL;
}
length = FileLength( fp );
#endif
buffer = GetClearedMemory( sizeof( script_t ) + length + 1 );
script = (script_t *) buffer;
memset( script, 0, sizeof( script_t ) );
strcpy( script->filename, filename );
script->buffer = (char *) buffer + sizeof( script_t );
script->buffer[length] = 0;
script->length = length;
//pointer in script buffer
script->script_p = script->buffer;
//pointer in script buffer before reading token
script->lastscript_p = script->buffer;
//pointer to end of script buffer
script->end_p = &script->buffer[length];
//set if there's a token available in script->token
script->tokenavailable = 0;
//
script->line = 1;
script->lastline = 1;
//
SetScriptPunctuations( script, NULL );
//
#ifdef BOTLIB
botimport.FS_Read( script->buffer, length, fp );
botimport.FS_FCloseFile( fp );
#else
if ( fread( script->buffer, length, 1, fp ) != 1 ) {
FreeMemory( buffer );
script = NULL;
} //end if
fclose( fp );
#endif
//
return script;
} //end of the function LoadScriptFile
//============================================================================
//load a script from the given memory with the given length
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
script_t *LoadScriptMemory( char *ptr, int length, char *name ) {
void *buffer;
script_t *script;
buffer = GetClearedMemory( sizeof( script_t ) + length + 1 );
script = (script_t *) buffer;
memset( script, 0, sizeof( script_t ) );
strcpy( script->filename, name );
script->buffer = (char *) buffer + sizeof( script_t );
script->buffer[length] = 0;
script->length = length;
//pointer in script buffer
script->script_p = script->buffer;
//pointer in script buffer before reading token
script->lastscript_p = script->buffer;
//pointer to end of script buffer
script->end_p = &script->buffer[length];
//set if there's a token available in script->token
script->tokenavailable = 0;
//
script->line = 1;
script->lastline = 1;
//
SetScriptPunctuations( script, NULL );
//
memcpy( script->buffer, ptr, length );
//
return script;
} //end of the function LoadScriptMemory
//============================================================================
//
// Parameter: -
// Returns: -
// Changes Globals: -
//============================================================================
void FreeScript( script_t *script ) {
#ifdef PUNCTABLE
if ( script->punctuationtable ) {
FreeMemory( script->punctuationtable );
}
#endif //PUNCTABLE
FreeMemory( script );
} //end of the function FreeScript