⟦e56aa2d34⟧

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% tftopl.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 1.0 of TFtoPL,
%                released with version 0.96 of TeX in February, 1983.
% 04/16/83 (PC)  Brought up to version 1.0 released with version 0.97 of TeX
%                in April, 1983.
% 06/30/83 (HWT) Revised changefile format, for use with version 1.7 Tangle.
% 07/28/83 (HWT) Brought up to version 2
% 11/21/83 (HWT) Brought up to version 2.1
% 03/24/84 (HWT) Brought up to version 2.2
% 07/12/84 (HWT) Brought up to version 2.3
% 07/05/87 (ETM) Brought up to version 2.5
% 03/22/88 (ETM) Converted for use with WEB to C.
% 11/30/89 (KB)  Version 3.
% 01/16/90 (SR)  Version 3.1.
%


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

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [1] Change banner string
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@d banner=='This is TFtoPL, Version 3.1' {printed when the program starts}
@y
@d banner=='This is TFtoPL, C Version 3.1' {printed when the program starts}
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [2] Fix files in program statement
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@p program TFtoPL(@!tfm_file,@!pl_file,@!output);
@y
@p program TFtoPL;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [6] Declare tfm_name.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!tfm_file:packed file of 0..255;
@y
@!tfm_file:packed file of 0..255;
@!tfm_name:packed array [1..FILENAMESIZE] of char;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [7] Open the TFM file.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@ On some systems you may have to do something special to read 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...@>=
reset(tfm_file);
@y
@ On some systems you may have to do something special to read a
packed file of bytes.  With C under Unix, we just open the file by name
and read characters from it.

@<Set init...@>=
if argc < 3 then begin
    print_ln('Usage: tftopl <tfm file> <property list file>.');
    uexit(1);
end;
argv(1, tfm_name);
reset(tfm_file, tfm_name);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [16] Declare pl_name
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!pl_file:text;
@y
@!pl_file:text;
@!pl_name: array[1..FILENAMESIZE] of char;
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [17] Open PL file
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@ @<Set init...@>=
rewrite(pl_file);
@y
@ @<Set init...@>=
argv(2, pl_name);
rewrite(pl_file, pl_name);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [27, 28] Change strings to C char pointers. The Pascal strings are
% indexed starting at 1, so we pad with a blank.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@!ASCII_04,@!ASCII_10,@!ASCII_14: packed array [1..32] of char;
  {strings for output in the user's external character set}
@!MBL_string,@!RI_string,@!RCE_string:packed array [1..3] of char;
  {handy string constants for |face| codes}
@y
@!ASCII_04,@!ASCII_10,@!ASCII_14: ccharpointer;
  {strings for output in the user's external character set}
@!MBL_string,@!RI_string,@!RCE_string: ccharpointer;
  {handy string constants for |face| codes}
@z

@x
ASCII_04:=' !"#$%&''()*+,-./0123456789:;<=>?';@/
ASCII_10:='@@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_';@/
ASCII_14:='`abcdefghijklmnopqrstuvwxyz{|}~ ';@/
MBL_string:='MBL'; RI_string:='RI '; RCE_string:='RCE';
@y
ASCII_04:='  !"#$%&''()*+,-./0123456789:;<=>?';@/
ASCII_10:=' @@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_';@/
ASCII_14:=' `abcdefghijklmnopqrstuvwxyz{|}~ ';@/
MBL_string:=' MBL'; RI_string:=' RI '; RCE_string:=' RCE';
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [39] Don't output the face code as an integer.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
  out(MBL_string[1+(b mod 3)]);
  out(RI_string[1+s]);
  out(RCE_string[1+(b div 3)]);
@y
  put_byte(MBL_string[1+(b mod 3)], pl_file);
  put_byte(RI_string[1+s], pl_file);
  put_byte(RCE_string[1+(b div 3)], pl_file);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [40] Force 32-bit constant arithmetic for 16-bit machines
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
f:=((tfm[k+1] mod 16)*@'400+tfm[k+2])*@'400+tfm[k+3];
@y
f:=((tfm[k+1] mod 16)*toint(@'400)+tfm[k+2])*@'400+tfm[k+3];
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [90] Change name of the function `f'.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
     r:=f(r,(hash[r]-1)div 256,(hash[r]-1)mod 256);
@y
     r:=f_fn(r,(hash[r]-1)div 256,(hash[r]-1)mod 256);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [94] 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. We also have to change the name, because there is also a
% variable named `f', and some C compilers can't deal with that.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
@p function f(@!h,@!x,@!y:index):index; forward;@t\2@>
  {compute $f$ for arguments known to be in |hash[h]|}
@y
@p 
ifdef('notdef') 
function f_fn(@!h,@!x,@!y:index):index; begin end;@t\2@>
  {compute $f$ for arguments known to be in |hash[h]|}
endif('notdef')
@z
@x
else eval:=f(h,x,y);
@y
else eval:=f_fn(h,x,y);
@z

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [95] The real definition of f.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
@x
@p function f;
@y
@p function f_fn(@!h,@!x,@!y:index):index; 
@z
@x
f:=lig_z[h];
@y
f_fn:=lig_z[h];
@z


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% [99] Add printing of newline at end of program
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@x
final_end:end.
@y
final_end:print_ln(' '); end.
@z
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