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// The data required for writing the various not-quoted escape sequences.
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// This file is shared between GRFCodec and NFORenum.
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// NFORenum defines NFORENUM. GRFCodec does not.
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#define START_ESCAPES()\
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#define ESCAPE(byte,str,action,off)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,off},
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#define ESCAPE_79(byte,str,off)\
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ESCAPE(byte,str,7,off)
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#define ESCAPE_AD(byte,str,action,off,adtl)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,off},
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#define ESCAPE_OVR(byte,str,action,ovr)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,0},
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#define START_ESCAPES()\
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bool (*additional)(const U8*,uint);\
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bool (*override)(const U8*,uint);\
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#define ESCAPE(byte,str,action,off)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,off,NULL,NULL},
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#define ESCAPE_79(byte,str,off)\
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ESCAPE(byte,str,7,off) ESCAPE(byte,str,9,off)
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#define ESCAPE_AD(byte,str,action,off,adtl)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,off,__ESC_AD__##adtl,NULL},
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#define ESCAPE_OVR(byte,str,action,ovr)\
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{(char)0x##byte,(char*)("\\" str),(char)0x##action,0,NULL,__ESC_OVR__##ovr},
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#define CALLBACK_AD(name)\
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bool __ESC_AD__##name(const U8*data,uint len)
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#define CALLBACK_OVR(name)\
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bool __ESC_OVR__##name(const U8*data,uint pos)
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#define END_ESCAPES() };\
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static const unsigned int num_esc=sizeof(escapes)/sizeof(escapes[0]);
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// ***********************************************************************
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// Define callback functions for ESCAPE_* here
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// Use the same value for the argument to the CALLBACK_* macro and the last
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// argument to ESCAPE_*
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// The signature for CALLBACK_AD is:
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// bool func(const U8*data, uint len)
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// The signature for CALLBACK_OVR is:
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// bool func(const U8*data, uint pos)
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// ***********************************************************************
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return len==9&&data[2]==0&&data[4]==0xFE&&data[5]==0xFF;
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if(pos<7||!(data[3]&0x80)||data[3]==0x80||data[3]==0x83)return false;
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uint w = 1<<((data[3]>>2)&3);
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uint loc=4;//Start at first <var>
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while(true){//read <var> [<param>] <varadjust> [<op> ...]. loc reports byte to be checked.
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if((data[loc++/*<var>*/]&0xE0)==0x60)loc++;//<param>
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if(loc>=pos)return false;
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if(!(data[loc]&0x20))return false;//end of advanced
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if(data[loc++/*<shift>*/]&0xC0)
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loc+=2*w;//<add> and <div>/<mod>
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if(loc==pos)return true;//This is an operation byte
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if(loc++/*<op>*/>pos)return false;//past proposed op byte
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// ***********************************************************************
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// Define escape sequences here.
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// The arguments to ESCAPE* are:
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// byte: the byte value for this escape sequence, in hex.
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// str: the string for this escape sequence, excluding the \.
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// action: the action for this escape sequence, eg 2, 7, D, &c.
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// Note that 7 and 9 are usually paired, with ESCAPE_79, which does
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// not take an action argument.
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// off: the offset in the action where this escape sequence appears
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// ESCAPE_AD takes an additional argument; the CALLBACK to call if the
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// byte, action, and off checks all pass.
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// EXCAPE_OVR takes an argument in place of off, the CALLBACK to call
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// instead of running the off check.
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// ***********************************************************************
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ESCAPE_OVR(00,"2+",2,Is2Op)
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ESCAPE_OVR(01,"2-",2,Is2Op)
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ESCAPE_OVR(02,"2<",2,Is2Op)
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ESCAPE_OVR(03,"2>",2,Is2Op)
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ESCAPE_OVR(04,"2u<",2,Is2Op)
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ESCAPE_OVR(05,"2u>",2,Is2Op)
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ESCAPE_OVR(06,"2/",2,Is2Op)
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ESCAPE_OVR(07,"2%",2,Is2Op)
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ESCAPE_OVR(08,"2u/",2,Is2Op)
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ESCAPE_OVR(09,"2u%",2,Is2Op)
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ESCAPE_OVR(0A,"2*",2,Is2Op)
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ESCAPE_OVR(0B,"2&",2,Is2Op)
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ESCAPE_OVR(0C,"2|",2,Is2Op)
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ESCAPE_OVR(0D,"2^",2,Is2Op)
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ESCAPE_OVR(0E,"2sto",2,Is2Op)
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ESCAPE_OVR(0E,"2s",2,Is2Op)
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ESCAPE_OVR(0F,"2rst",2,Is2Op)
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ESCAPE_OVR(0F,"2r",2,Is2Op)
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ESCAPE_OVR(10,"2psto",2,Is2Op)
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ESCAPE_OVR(11,"2ror",2,Is2Op)
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ESCAPE_OVR(11,"2rot",2,Is2Op)
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ESCAPE_OVR(12,"2cmp",2,Is2Op)
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ESCAPE_OVR(13,"2ucmp",2,Is2Op)
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ESCAPE_OVR(14,"2<<",2,Is2Op)
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ESCAPE_OVR(15,"2u>>",2,Is2Op)
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ESCAPE_OVR(16,"2>>",2,Is2Op)
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ESCAPE_79(08,"7gG",3)
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ESCAPE_79(09,"7GG",3)
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ESCAPE_79(0A,"7gg",3)
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ESCAPE(05,"Du<<",D,2)
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ESCAPE_AD(00,"DR",D,3,IsGRM)
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ESCAPE_AD(01,"DF",D,3,IsGRM)
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ESCAPE_AD(02,"DC",D,3,IsGRM)
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ESCAPE_AD(03,"DM",D,3,IsGRM)
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ESCAPE_AD(04,"DnF",D,3,IsGRM)
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ESCAPE_AD(05,"DnC",D,3,IsGRM)
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ESCAPE_AD(06,"DO",D,3,IsGRM)
added
removed
src/escapes.h
