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% pltotf.ch for C compilation with web2c.
% 
% The original version of this file was created by Pavel Curtis.
%
% History:
% 04/04/83 (PC)  Original version, made to work with version 1.2 of PLtoTF.
% 04/16/83 (PC)  Brought up to version 1.3 of PLtoTF.
% 06/30/83 (HWT) Revised changefile format for version 1.7 Tangle
% 07/28/83 (HWT) Brought up to version 2
% 12/19/86 (ETM) Brought up to version 2.1
% 07/05/87 (ETM) Brought up to version 2.3
% 03/22/88 (ETM) Converted for use with WEB to C
% 11/29/89 (KB)  Version 3.
% 01/16/90 (SR)  Version 3.2.
% 


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [0] WEAVE: print changes only
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
\pageno=\contentspagenumber \advance\pageno by 1
@y
\pageno=\contentspagenumber \advance\pageno by 1
\let\maybe=\iffalse
\def\title{PLTOTF changes for C}
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [1] Change banner string.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d banner=='This is PLtoTF, Version 3.2' {printed when the program starts}
@y
@d banner=='This is PLtoTF, C Version 3.2' {printed when the program starts}
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [2] Remove filenames in program statement.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@p program PLtoTF(@!pl_file,@!tfm_file,@!output);
@y
@p program PLtoTF;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [3] Larger constants.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!max_kerns=500; {the maximum number of distinct kern values}
@!hash_size=5003; {preferably a prime number, a bit larger than the number
  of character pairs in lig/kern steps}
@y
@!max_kerns=10000; {the maximum number of distinct kern values}
@!hash_size=15077; {preferably a prime number, a bit larger than the number
  of character pairs in lig/kern steps}
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [6] Open PL file.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
reset(pl_file);
@y
if argc < 3 then begin
    print_ln('Usage: pltotf <property list file> <tfm file>.');
    uexit(1);
end;
argv(1, pl_name);
reset(pl_file, pl_name);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [15] Change type of tfm_file and declare extra file name variables. 
% We don't have to worry about matching FILENAMESIZE here, since no
% paths are used in opening files.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!tfm_file:packed file of 0..255;
@y
@!tfm_file:packed file of 0..255;
@!tfm_name,@!pl_name:packed array[1..100] of char;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [16] Open TFM file
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@ On some systems you may have to do something special to write a
packed file of bytes. For example, the following code didn't work
when it was first tried at Stanford, because packed files have to be
opened with a special switch setting on the \PASCAL\ that was used.
@^system dependencies@>

@<Set init...@>=
rewrite(tfm_file);
@y
@ On some systems you may have to do something special to write a
packed file of bytes with Pascal.  It's no problem in C.
@^system dependencies@>

@<Set init...@>=
argv(2, tfm_name);
rewrite(tfm_file, tfm_name);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [115] Output of reals.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@ @d round_message(#)==if delta>0 then print_ln('I had to round some ',
@.I had to round...@>
  #,'s by ',(((delta+1) div 2)/@'4000000):1:7,' units.')
@y
@ @d round_message(#)==if delta>0 then begin print('I had to round some ',
@.I had to round...@>
  #,'s by '); print_real((((delta+1) div 2)/@'4000000),1,7);
  print_ln(' units.'); end
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [123] web2c can't handle these mutually recursive procedures.
% But let's do a fake definition of f here, so that it gets into web2c's
% symbol table...
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
@p function f(@!h,@!x,@!y:indx):indx; forward;@t\2@>
  {compute $f$ for arguments known to be in |hash[h]|}
@y
@p 
ifdef('notdef') 
function f(@!h,@!x,@!y:indx):indx; begin end;@t\2@>
  {compute $f$ for arguments known to be in |hash[h]|}
endif('notdef')
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [124] ... and then really define it now.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
@p function f;
@y
@p function f(@!h,@!x,@!y:indx):indx; 
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [127] Fix up output of bytes.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d out(#)==write(tfm_file,#)
@y
@d out(#)==putbyte(#,tfm_file)
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [136] Fix output of reals.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@p procedure out_scaled(x:fix_word); {outputs a scaled |fix_word|}
var @!n:byte; {the first byte after the sign}
@!m:0..65535; {the two least significant bytes}
begin if abs(x/design_units)>=16.0 then
  begin print_ln('The relative dimension ',x/@'4000000:1:3,
    ' is too large.');
@.The relative dimension...@>
  print('  (Must be less than 16*designsize');
  if design_units<>unity then print(' =',design_units/@'200000:1:3,
      ' designunits');
@y
@p procedure out_scaled(x:fix_word); {outputs a scaled |fix_word|}
var @!n:byte; {the first byte after the sign}
@!m:0..65535; {the two least significant bytes}
begin if fabs(x/design_units)>=16.0 then
  begin print('The relative dimension ');
    print_real(x/@'4000000,1,3);
    print_ln(' is too large.');
@.The relative dimension...@>
  print('  (Must be less than 16*designsize');
  if design_units<>unity then begin print(' =');
	print_real(design_units/@'200000,1,3);
	print(' designunits');
  end;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [141] char_remainder[c] is unsigned, and label_table[sort_ptr].rr
% might be -1, and if -1 is coerced to being unsigned, it will be bigger
% than anything else.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
  while label_table[sort_ptr].rr>char_remainder[c] do
@y
  while label_table[sort_ptr].rr>toint(char_remainder[c]) do
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [147] Print newline at end of program
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
end.
@y
print_ln(' '); end.
@z
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