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txt2raw.pl
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txt2raw.pl
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#!/usr/bin/perl
die "\ntxt2raw.pl V1.0 - Copyright 2005, Vini Matangrano\n"
. "Special thanks to Thomas Okken for invaluable contribution\n\n"
. "Usage: txt2raw.pl <infile> [<outfile>]\n"
. "A new file 'filename.raw' will be created.\n"
. "\nNotes (aka \"Don't blame me, I warned you!\"):\n\n"
. "1) There's not much error checking - use the script at your own risk.\n\n"
. "2) Everything is CASE-SENSITIVE.\n\n"
. "3) Keywords and parameters are distinguished by the spaces in between "
. "them. I tried to follow HP-42S format as closely as possible. Please be "
. "careful while typing - e.g., type\n\"STO+ ST Z\", don't type\n\"STO + "
. "ST Z\", or \"STO+STZ\", or \"STO +STZ\", etc..\n\n"
. "4) Weird characters. The following sequences will be translated into the "
. "appropriate instructions:\n'x' (lowercase x) = multiplication (obs: "
. "Free42's '×' is also supported),\n'/' = division (obs: Free42's '÷' is "
. "also supported),\n"
. "'|-' = concatenation character,\n'\\Sigma' = greek sigma "
. "(statistics functions),\n'v' (lowercase v) = down arrow, as in \"Rv"
. "\",\n'^' = up arrow,\n'<-' = left arrow,\n'->' = right arrow.\n\n"
. "5) The substitutions above will only affect keywords, not the strings. "
. "To enter special characters in strings, a txt2raw.prm file is provided, "
. "and it can be edited to fit your needs.\n\n"
. "6) Integer numbers at the beginning of lines that contain other words ("
. "numeric or not) are interpreted as line numbers and therefore will be "
. "ignored - this allows us to build programs from scratch without having to "
. "type line numbers. If a '>' follows the number (as we see in program "
. "listings before LBL instructions), it will be ignored as well.\n\n"
. "7) I know, this is not state-of-the-art, but at least it's free...\n"
unless ($#ARGV == 0 or $#ARGV == 1);
### My list of possible errors:
@errors = (
"No errors",
"Keyword not found",
"Bad parameters",
"String too long"
);
### List of "fixed" opcodes
%opcodes = (
"CLX" => "77",
"ENTER" => "83",
"X<>Y" => "71",
"Rv" => "75",
"+/-" => "54",
"/" => "43",
"x" => "42",
"-" => "41",
"+" => "40",
"LASTX" => "76",
"SIN" => "59",
"COS" => "5A",
"TAN" => "5B",
"ASIN" => "5C",
"ACOS" => "5D",
"ATAN" => "5E",
"LOG" => "56",
"10^X" => "57",
"LN" => "50",
"E^X" => "55",
"SQRT" => "52",
"X^2" => "51",
"1/X" => "60",
"Y^X" => "53",
"%" => "4C",
"PI" => "72",
"COMPLEX" => "A0 72",
"ALL" => "A2 5D",
"NULL" => "00",
"CLA" => "87",
"DEG" => "80",
"RAD" => "81",
"GRAD" => "82",
"RECT" => "A2 5A",
"POLAR" => "A2 59",
"CPXRES" => "A2 6A",
"REALRES" => "A2 6B",
"KEYASN" => "A2 63",
"LCLBL" => "A2 64",
"RDX." => "A2 5B",
"RDX," => "A2 5C",
"CL\\Sigma" => "70",
"CLST" => "73",
"CLRG" => "8A",
"CLKEYS" => "A2 62",
"CLLCD" => "A7 63",
"CLMENU" => "A2 6D",
"->DEG" => "6B",
"->RAD" => "6A",
"->HR" => "6D",
"->HMS" => "6C",
"->REC" => "4E",
"->POL" => "4F",
"IP" => "68",
"FP" => "69",
"RND" => "6E",
"ABS" => "61",
"SIGN" => "7A",
"MOD" => "4B",
"COMB" => "A0 6F",
"PERM" => "A0 70",
"N!" => "62",
"GAMMA" => "A0 74",
"RAN" => "A0 71",
"SEED" => "A0 73",
"RTN" => "85",
"AVIEW" => "7E",
"PROMPT" => "8E",
"PSE" => "89",
"AIP" => "A6 31",
"XTOA" => "A6 6F",
"AGRAPH" => "A7 64",
"PIXEL" => "A7 65",
"BEEP" => "86",
"GETKEY" => "A2 6E",
"MENU" => "A2 5E",
"X=0?" => "67",
"X!=0?" => "63",
"X<0?" => "66",
"X>0?" => "64",
"X<=0?" => "7B",
"X>=0?" => "A2 5F",
"X=Y?" => "78",
"X!=Y?" => "79",
"X<Y?" => "44",
"X>Y?" => "45",
"X<=Y?" => "46",
"X>=Y?" => "A2 60",
"PR\\Sigma" => "A7 52",
"PRSTK" => "A7 53",
"PRA" => "A7 48",
"PRX" => "A7 54",
"PRUSR" => "A7 61",
"ADV" => "8F",
"PRLCD" => "A7 62",
"DELAY" => "A7 60",
"PRON" => "A7 5E",
"PROFF" => "A7 5F",
"MAN" => "A7 5B",
"NORM" => "A7 5C",
"TRACE" => "A7 5D",
"\\Sigma+" => "47",
"\\Sigma-" => "48",
"END" => "C0 00 0D",
".END." => "C0 00 0D",
"STOP" => "84",
"NEWMAT" => "A6 DA",
"R^" => "74",
"REAL?" => "A2 65",
"CPX?" => "A2 67",
"STR?" => "A2 68",
"MAT?" => "A2 66",
"DIM?" => "A6 E7",
"ON" => "A2 70",
"OFF" => "8D",
"\\SigmaREG?" => "A6 78",
"CLD" => "7F",
"ACOSH" => "A0 66",
"ALENG" => "A6 41",
"ALL\\Sigma" => "A0 AE",
"AND" => "A5 88",
"AOFF" => "8B",
"AON" => "8C",
"AROT" => "A6 46",
"ASHF" => "88",
"ASINH" => "A0 64",
"ATANH" => "A0 65",
"ATOX" => "A6 47",
"BASE+" => "A0 E6",
"BASE-" => "A0 E7",
"BASEx" => "A0 E8",
"BASE/" => "A0 E9",
"BASE+/-" => "A0 EA",
"BEST" => "A0 9F",
"BINM" => "A0 E5",
"BIT?" => "A5 8C",
"CORR" => "A0 A7",
"COSH" => "A0 62",
"CROSS" => "A6 CA",
"CUSTOM" => "A2 6F",
"DECM" => "A0 E3",
"DELR" => "A0 AB",
"DET" => "A6 CC",
"DOT" => "A6 CB",
"EDIT" => "A6 E1",
"EXITALL" => "A2 6C",
"EXPF" => "A0 A0",
"E^X-1" => "58",
"FCSTX" => "A0 A8",
"FCSTY" => "A0 A9",
"FNRM" => "A6 CF",
"GETM" => "A6 E8",
"GROW" => "A6 E3",
"HEXM" => "A0 E2",
"HMS+" => "49",
"HMS-" => "4A",
"I+" => "A6 D2",
"I-" => "A6 D3",
"INSR" => "A0 AA",
"INVRT" => "A6 CE",
"J+" => "A6 D4",
"J-" => "A6 D5",
"LINF" => "A0 A1",
"LIN\\Sigma" => "A0 AD",
"LN1+X" => "65",
"LOGF" => "A0 A2",
"MEAN" => "7C",
"NOT" => "A5 87",
"OCTM" => "A0 E4",
"OLD" => "A6 DB",
"OR" => "A5 89",
"POSA" => "A6 5C",
"PUTM" => "A6 E9",
"PWRF" => "A0 A3",
"RCLEL" => "A6 D7",
"RCLIJ" => "A6 D9",
"RNRM" => "A6 ED",
"ROTXY" => "A5 8B",
"RSUM" => "A6 D0",
"R<>R" => "A6 D1",
"SDEV" => "7D",
"SINH" => "A0 61",
"SLOPE" => "A0 A4",
"STOEL" => "A6 D6",
"STOIJ" => "A6 D8",
"SUM" => "A0 A5",
"TANH" => "A0 63",
"TRANS" => "A6 C9",
"UVEC" => "A6 CD",
"WMEAN" => "A0 AC",
"WRAP" => "A6 E2",
"XOR" => "A5 8A",
"YINT" => "A0 A6",
"->DEC" => "5F",
"->OCT" => "6F",
"<-" => "A6 DC",
"^" => "A6 DE",
"v" => "A6 DF",
"->" => "A6 DD",
"%CH" => "4D",
"`str`" => "Fn",
"[MAX]" => "A6 EB",
"[MIN]" => "A6 EA",
"[FIND]" => "A6 EC"
);
### List of "modifiable" opcodes
%modified = (
"STO" => {"sr" => "3r",
"rr" => "91 rr",
"ST" => "91 7t",
"`str`" => "Fn 81",
"IND sr" => "91 8r",
"IND rr" => "91 8r",
"IND ST" => "91 Ft",
"IND `str`" => "Fn 89"},
"STO+" => {"sr" => "92 rr",
"rr" => "92 rr",
"ST" => "92 7t",
"`str`" => "Fn 82",
"IND sr" => "92 8r",
"IND rr" => "92 8r",
"IND ST" => "92 Ft",
"IND `str`" => "Fn 8A"},
"STO-" => {"sr" => "93 rr",
"rr" => "93 rr",
"ST" => "93 7t",
"`str`" => "Fn 83",
"IND sr" => "93 8r",
"IND rr" => "93 8r",
"IND ST" => "93 Ft",
"IND `str`" => "Fn 8B"},
"STOx" => {"sr" => "94 rr",
"rr" => "94 rr",
"ST" => "94 7t",
"`str`" => "Fn 84",
"IND sr" => "94 8r",
"IND rr" => "94 8r",
"IND ST" => "94 Ft",
"IND `str`" => "Fn 8C"},
"STO/" => {"sr" => "95 rr",
"rr" => "95 rr",
"ST" => "95 7t",
"`str`" => "Fn 85",
"IND sr" => "95 8r",
"IND rr" => "95 8r",
"IND ST" => "95 Ft",
"IND `str`" => "Fn 8D"},
"RCL" => {"sr" => "2r",
"rr" => "90 rr",
"ST" => "90 7t",
"`str`" => "Fn 91",
"IND sr" => "90 8r",
"IND rr" => "90 8r",
"IND ST" => "90 Ft",
"IND `str`" => "Fn 99"},
"RCL+" => {"sr" => "F2 D1 rr",
"rr" => "F2 D1 rr",
"ST" => "F2 D1 7t",
"`str`" => "Fn 92",
"IND sr" => "F2 D1 8r",
"IND rr" => "F2 D1 8r",
"IND ST" => "F2 D1 Ft",
"IND `str`" => "Fn 9A"},
"RCL-" => {"sr" => "F2 D2 rr",
"rr" => "F2 D2 rr",
"ST" => "F2 D2 7t",
"`str`" => "Fn 93",
"IND sr" => "F2 D2 8r",
"IND rr" => "F2 D2 8r",
"IND ST" => "F2 D2 Ft",
"IND `str`" => "Fn 9B"},
"RCLx" => {"sr" => "F2 D3 rr",
"rr" => "F2 D3 rr",
"ST" => "F2 D3 7t",
"`str`" => "Fn 94",
"IND sr" => "F2 D3 8r",
"IND rr" => "F2 D3 8r",
"IND ST" => "F2 D3 Ft",
"IND `str`" => "Fn 9C"},
"RCL/" => {"sr" => "F2 D4 rr",
"rr" => "F2 D4 rr",
"ST" => "F2 D4 7t",
"`str`" => "Fn 95",
"IND sr" => "F2 D4 8r",
"IND rr" => "F2 D4 8r",
"IND ST" => "F2 D4 Ft",
"IND `str`" => "Fn 9D"},
"LBL" => {"sl" => "0l",
"ll" => "CF nn",
"xl" => "CF xx",
"`str`" => "C0 00 Fn 00"},
"GTO" => {"sl" => "Bl 00",
"ll" => "D0 00 nn",
"xl" => "D0 00 xx",
"`str`" => "1D Fn",
"IND sl" => "AE nn",
"IND ll" => "AE nn",
"IND ST" => "AE 7t",
"IND `str`" => "Fn AE"},
"XEQ" => {"sl" => "E0 00 nn",
"ll" => "E0 00 nn",
"xl" => "E0 00 xx",
"`str`" => "1E Fn",
"IND sl" => "AE 8r",
"IND ll" => "AE 8r",
"IND ST" => "AE Ft",
"IND `str`" => "Fn AF"},
"ASTO" => {"sr" => "9A rr",
"rr" => "9A rr",
"ST" => "9A 7t",
"`str`" => "Fn B2",
"IND sr" => "9A 8r",
"IND rr" => "9A 8r",
"IND ST" => "9A Ft",
"IND `str`" => "Fn BA"},
"ARCL" => {"sr" => "9B rr",
"rr" => "9B rr",
"ST" => "9B 7t",
"`str`" => "Fn B3",
"IND sr" => "9B 8r",
"IND rr" => "9B 8r",
"IND ST" => "9B Ft",
"IND `str`" => "Fn BB"},
"FIX" => {"sd" => "9C nn",
"10" => "F1 D5",
"11" => "F1 E5",
"IND rr" => "9C 8r",
"IND ST" => "9C Ft",
"IND `str`" => "Fn DC"},
"SCI" => {"sd" => "9D nn",
"10" => "F1 D6",
"11" => "F1 E6",
"IND rr" => "9D 8r",
"IND ST" => "9D Ft",
"IND `str`" => "Fn DD"},
"ENG" => {"sd" => "9E nn",
"10" => "F1 D7",
"11" => "F1 E7",
"IND rr" => "9E 8r",
"IND ST" => "9E Ft",
"IND `str`" => "Fn DE"},
"ISG" => {"sr" => "96 rr",
"rr" => "96 rr",
"ST" => "96 7t",
"`str`" => "Fn 96",
"IND sr" => "96 8r",
"IND rr" => "96 8r",
"IND ST" => "96 Ft",
"IND `str`" => "Fn 9E"},
"DSE" => {"sr" => "97 rr",
"rr" => "97 rr",
"ST" => "97 7t",
"`str`" => "Fn 97",
"IND sr" => "97 8r",
"IND rr" => "97 8r",
"IND ST" => "97 Ft",
"IND `str`" => "Fn 9F"},
"KEY `key` GTO" => {"sl" => "F3 E3 kk rr",
"ll" => "F3 E3 kk rr",
"xl" => "F3 E3 kk xx",
"`str`" => "Fn C3 kk",
"IND sl" => "F3 E3 kk 8r",
"IND ll" => "F3 E3 kk 8r",
"IND ST" => "F3 E3 kk Ft",
"IND `str`" => "Fn CB kk"},
"KEY `key` XEQ" => {"sl" => "F3 E2 kk rr",
"ll" => "F3 E2 kk rr",
"xl" => "F3 E2 kk xx",
"`str`" => "Fn C2 kk",
"IND sl" => "F3 E2 kk 8r",
"IND ll" => "F3 E2 kk 8r",
"IND ST" => "F3 E2 kk Ft",
"IND `str`" => "Fn CA kk"},
"DIM" => {"`str`" => "Fn C4",
"IND sr" => "F2 EC 8r",
"IND rr" => "F2 EC 8r",
"IND ST" => "F2 EC Ft",
"IND `str`" => "Fn CC"},
"EDITN" => {"`str`" => "Fn C6",
"IND sr" => "F2 EF 8r",
"IND rr" => "F2 EF 8r",
"IND ST" => "F2 EF Ft",
"IND `str`" => "Fn CE"},
"INDEX" => {"`str`" => "Fn 87",
"IND sr" => "F2 DA 8r",
"IND rr" => "F2 DA 8r",
"IND ST" => "F2 DA Ft",
"IND `str`" => "Fn 8F"},
"X<>" => {"sr" => "CE rr",
"rr" => "CE rr",
"ST" => "CE 7t",
"`str`" => "Fn 86",
"IND sr" => "CE 8r",
"IND rr" => "CE 8r",
"IND ST" => "CE Ft",
"IND `str`" => "Fn 8E"},
"SF" => {"sr" => "A8 rr",
"rr" => "A8 rr",
"IND sr" => "A8 8r",
"IND rr" => "A8 8r",
"IND ST" => "A8 Ft",
"IND `str`" => "Fn A8"},
"CF" => {"sr" => "A9 rr",
"rr" => "A9 rr",
"IND sr" => "A9 8r",
"IND rr" => "A9 8r",
"IND ST" => "A9 Ft",
"IND `str`" => "Fn A9"},
"FS?" => {"sr" => "AC rr",
"rr" => "AC rr",
"IND sr" => "AC 8r",
"IND rr" => "AC 8r",
"IND ST" => "AC Ft",
"IND `str`" => "Fn AC"},
"FC?" => {"sr" => "AD rr",
"rr" => "AD rr",
"IND sr" => "AD 8r",
"IND rr" => "AD 8r",
"IND ST" => "AD Ft",
"IND `str`" => "Fn AD"},
"FS?C" => {"sr" => "AA rr",
"rr" => "AA rr",
"IND sr" => "AA 8r",
"IND rr" => "AA 8r",
"IND ST" => "AA Ft",
"IND `str`" => "Fn AA"},
"FC?C" => {"sr" => "AB rr",
"rr" => "AB rr",
"IND sr" => "AB 8r",
"IND rr" => "AB 8r",
"IND ST" => "AB Ft",
"IND `str`" => "Fn AB"},
"VIEW" => {"sr" => "98 rr",
"rr" => "98 rr",
"ST" => "98 7t",
"`str`" => "Fn 80",
"IND sr" => "98 8r",
"IND rr" => "98 8r",
"IND ST" => "98 Ft",
"IND `str`" => "Fn 88"},
"INPUT" => {"sr" => "F2 D0 rr",
"rr" => "F2 D0 rr",
"ST" => "F2 D0 7t",
"`str`" => "Fn C5",
"IND sr" => "F2 EE 8r",
"IND rr" => "F2 EE 8r",
"IND ST" => "F2 EE Ft",
"IND `str`" => "Fn CD"},
"CLV" => {"`str`" => "Fn B0",
"IND sr" => "F2 D8 8r",
"IND rr" => "F2 D8 8r",
"IND ST" => "F2 D8 Ft",
"IND `str`" => "Fn B8"},
"CLP" => {"`str`" => "Fn F0"},
"TONE" => {"sr" => "9F rr",
"rr" => "9F rr",
"IND sr" => "9F 8r",
"IND rr" => "9F 8r",
"IND ST" => "9F Ft",
"IND `str`" => "Fn DF"},
"MVAR" => {"`str`" => "Fn 90"},
"VARMENU" => {"`str`" => "Fn C1",
"IND sr" => "F2 F8 8r",
"IND rr" => "F2 F8 8r",
"IND ST" => "F2 F8 Ft",
"IND `str`" => "Fn C9"},
"PRV" => {"`str`" => "Fn B1",
"IND sr" => "F2 D9 8r",
"IND rr" => "F2 D9 8r",
"IND ST" => "F2 D9 Ft",
"IND `str`" => "Fn B9"},
"\\SigmaREG" => {"sr" => "99 rr",
"rr" => "99 rr",
"IND sr" => "99 8r",
"IND rr" => "99 8r",
"IND ST" => "99 Ft",
"IND `str`" => "Fn DB"},
"INTEG" => {"`str`" => "Fn B6",
"IND sr" => "F2 EA 8r",
"IND rr" => "F2 EA 8r",
"IND ST" => "F2 EA Ft",
"IND `str`" => "Fn BE"},
"PGMSLV" => {"`str`" => "Fn B5",
"IND sr" => "F2 E9 8r",
"IND rr" => "F2 E9 8r",
"IND ST" => "F2 E9 Ft",
"IND `str`" => "Fn BD"},
"PGMINT" => {"`str`" => "Fn B4",
"IND sr" => "F2 E8 8r",
"IND rr" => "F2 E8 8r",
"IND ST" => "F2 E8 Ft",
"IND `str`" => "Fn BC"},
"SOLVE" => {"`str`" => "Fn B7",
"IND sr" => "F2 EB 8r",
"IND rr" => "F2 EB 8r",
"IND ST" => "F2 EB Ft",
"IND `str`" => "Fn BF"},
"ASSIGN" => {"`str`" => "Fn C0 aa"},
"SIZE" => {"sr" => "F3 F7 ww ww",
"rr" => "F3 F7 ww ww"},
"|-" => {"`str`" => "Fn 7F"}
);
### "Values" of stack registers
%stack = (
"T" => 0,
"Z" => 1,
"Y" => 2,
"X" => 3,
"L" => 4
);
### Opening input and output files
if ($#ARGV == 1) {
$infile = $ARGV[0];
$outfile = $ARGV[1];
} elsif ($#ARGV == 0) {
$outfile = $infile = $ARGV[0];
$outfile =~ s/\.txt$/.raw/ or $outfile .= ".raw";
}
open (FILE, $infile) or die "Can't open source file: $infile\n";
open (OUTF, ">$outfile");
binmode OUTF;
if (open (PRM, "txt2raw.prm"))
{
$prm = 0;
while (<PRM>)
{
next if (/^\s*$/);
next if (/^#/);
s/\\(\d{3})/chr($1)/e;
s/\\/\\\\/g;
s/^\s+//;
chomp;
$special[$prm] = [ split ];
$prm++;
}
close (PRM);
}
$error = 0;
### Main loop
while (<FILE>)
{
last if ($error != 0);
$line++;
next if (/^#/); ### Comment line - CM
s/\/\/.*//; ### C++ style comment - CM
next unless (/[\w\"\-\+\/×÷%]/); ### Some lines can be ignored
next if (/\{ \d+\-Byte Prgm \}/);
print;
chomp;
### Strings will be temporarily replaced with a special token
### This also helps isolating the concatenation character
if (/\".*\"/)
{
$strings{$line} = $&;
s/(\".*\")/ `str` /;
}
### Same for keys
if (/KEY\s+(\d) /)
{
$keys{$line} = $1;
s/KEY\s+\d /KEY `key` /;
}
### Let's eliminate useless spaces
s/^\s+//;
s/\s+$//;
### Split up the code line, ignore line numbers if any
@words = split /\s+/;
shift @words if (($#words > 0) && ($words[0] =~ /^\d+$/));
$opc = shift (@words);
### Do we have a string?
if ($opc eq "`str`")
{
$aux = string($opcodes{$opc}, $strings{$line});
outp ($aux);
next;
}
### This is for compatibility with Free42 print-out feature
$opc =~ s/^\d+\>//;
$opc =~ s/×/x/;
$opc =~ s/÷/\//;
### Do we have a number?
if ($opc =~ /^\-?\d+(\.\d+|)(E\-?\d{1,3}|)$/)
{
$res = number ($opc);
outp ($res);
next;
}
### Do we have a "fixed" opcode? If so, go ahead and spit it out
if (defined ($aux = $opcodes{$opc}))
{
outp ($aux);
next;
}
### Do we have a KEY... GTO/XEQ instruction?
if ($words[0] eq "`key`")
{
$opc .= " " . shift @words;
$opc .= " " . shift @words;
}
### Do we have a "modifiable" opcode? If so, process parameters before spitting
if (defined ($modified{$opc}))
{
$aux = process ($opc, $line, @words);
unless (defined($aux))
{
$error = 2 if ($error == 0);
last;
}
outp ($aux, $line, @words);
next;
}
### If everything above failed, all we can do now is cry...
$error = 1;
}
close (FILE);
close (OUTF);
$opc =~ s/`str`/$strings{$line}/;
die "Error: $errors[$error]!\nLine $line ('$opc').\nAborting...\n" if ($error);
print "\n$errors[$error].\n";
#############################################################################
### Parameter processing.
sub process {
my $opc = shift;
my $line = shift;
my @words = @_;
my $num;
my %auxh = %{$modified{$opc}};
my $key = "";
### This might seem stupid, but I'm not doing it for applause, anyway.
### Now that it's done, I wonder if I should have tried to go backwards, i.e.,
### join all parameters and try to match a valid instruction, then on failure,
### try one less parameter, and so on. But it's already done, and I'm quite
### lazy. Maybe someday...
### Instead, what I have done is to try one parameter at a time, from left
### to right, to find a valid "key" to the %modified hash. The last parameter,
### if it is a number or a string, will be saved for later substitution.
if ($words[0] eq "IND")
{
$key .= ($key eq "" ? "" : " ") . shift(@words);
}
if ($words[0] eq "ST")
{
$key .= ($key eq "" ? "" : " ") . shift(@words);
}
if ($words[0] eq "`str`")
{
$key .= ($key eq "" ? "" : " ") . shift(@words);
}
if ($words[0] eq "TO")
{
shift(@words);
$num = shift(@words) - 1;
}
if ($words[0] =~ /^\d+$/)
{
$num = shift @words;
if ($opc =~ /(LBL|GTO|XEQ)/)
{
$key .= ($key eq "" ? "" : " ") . ($num < 15 ? "sl" : "ll");
}
else
{
if ($opc =~ /(FIX|SCI|ENG)/)
{
$key .= ($key eq "IND" ? " rr" : ($num < 10 ? "sd" : $num));
}
else
{
$key .= ($key eq "IND" ? " " : "") . ($num < 16 ? "sr" : "rr");
}
}
}
if (uc($words[0]) =~ /^[A-J]$/)
{
$key = "xl";
$num = ord(shift(@words)) + 37;
$num -= 11 if ($num > 133);
}
if ($words[0] =~ /^[LXYZT]$/)
{
$num = $stack{shift(@words)};
}
### We finally have (hopefully) the key to %modified hash. Let's retrieve the
### hex code for the instruction.
my $aux = $auxh{$key};
### If we have a string parameter, substitute it here (and update the
### instruction length).
if ($key =~ /`str`/)
{
$aux = string($aux, $strings{$line});
}
### If we have to do any other substitutions, we do them now. Some of them are
### redundant, but I kept them this way for the sake of readability and
### some flexibility.
$aux =~ s/ww ww/hxa($num \/ 256) . " " . hxa($num % 256)/e;
$aux =~ s/ll/"CF " . hxa($num)/e;
$aux =~ s/([\dA-F])l/hxa(hex($1 . "0") + 1 + $num)/e;
$aux =~ s/xx/hxa($num)/e;
$aux =~ s/rr/hxa($num)/e;
$aux =~ s/nn/hxa($num)/e;
$aux =~ s/(\d)r/hxa($1*16 + $num)/e;
$aux =~ s/([\dA-F])t/$1 . $num/e;
$aux =~ s/kk/hxa($keys{$line})/e;
return $aux;
}
#############################################################################
### Changing strings into corresponding opcodes (also adjusting the
### instruction length in "Fn" byte). Special characters will be
### translated as defined in txt2raw.prm file.
sub string {
my $aux = shift;
my $str = shift;
my $len = length ($str);
my $pos = index ($aux, "Fn");
my $i;
$str = substr ($str, 1, $len - 2);
for ($i = 0; $i <= $#special; $i++)
{
$str =~ s/$special[$i][0]/chr($special[$i][1])/eg;
}
$len = length ($str);
if ($len > ($aux eq "Fn 7F" ? 14 : ($aux eq "Fn" ? 15 : 7)))
{
$error = 3;
return undef;
}
for ($i = 0; $i < $len; $i++)
{
$aux .= " " . hxa( ord( substr($str,$i,1) ));
}
$aux =~ s/ aa(.*)/$1 nn/;
my $dist = (length ($aux) - $pos - 2) / 3;
$aux = substr ($aux, 0, $pos) . hxa(240 + $dist) . substr ($aux, $pos + 2);
return $aux;
}
#############################################################################
### Changing numbers into corresponding opcodes.
sub number {
my $num = shift;
$num =~ s/(\d)/ 1$1/g;
$num =~ s/\./ 1A/g;
$num =~ s/E/ 1B/;
$num =~ s/\-/ 1C/g;
$num =~ s/ //;
$num .= " 00";
return $num;
}
#############################################################################
### Sending binary data to output file.
sub outp {
my $str = shift;
my $byte;
foreach $byte (split /\s/, $str)
{
print OUTF chr (hex ($byte));
}
}
#############################################################################
### Changing integers into hex string (one single byte).
sub hxa {
use integer;
my $byte = shift;
my $aux = $byte % 16;
my $hx = chr(48 + $aux + ($aux > 9 ? 7 : 0));
$byte /= 16;
$aux = $byte % 16;
$hx = chr(48 + $aux + ($aux > 9 ? 7 : 0)) . $hx;
return $hx;
}