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Diffstat (limited to 'Build/source/texk/web2c/omegaware/ovf2ovp.ch')
| -rw-r--r-- | Build/source/texk/web2c/omegaware/ovf2ovp.ch | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/omegaware/ovf2ovp.ch b/Build/source/texk/web2c/omegaware/ovf2ovp.ch new file mode 100644 index 00000000000..4c2c3effb3d --- /dev/null +++ b/Build/source/texk/web2c/omegaware/ovf2ovp.ch @@ -0,0 +1,610 @@ +% +% This file is part of the Omega project, which +% is based in the web2c distribution of TeX. +% +% Copyright (c) 1994--1998 John Plaice and Yannis Haralambous +% applies only to the changes to the original vftovp.ch. +% +% vftovp.ch for C compilation with web2c. +% Written by kb@cs.umb.edu. +% This file is in the public domain. + +@x [0] WEAVE: print changes only. +\pageno=\contentspagenumber \advance\pageno by 1 +@y +\pageno=\contentspagenumber \advance\pageno by 1 +%\let\maybe=\iffalse +%\def\title{VF$\,$\lowercase{to}$\,$VP changes for C} +@z + +@x still [2] Set up for path reading. +procedure initialize; {this procedure gets things started properly} + var @!k:integer; {all-purpose index for initialization} + begin print_ln(banner);@/ +@y +@<Define |parse_arguments|@> +procedure initialize; {this procedure gets things started properly} + var @!k:integer; {all-purpose index for initialization} + begin + kpse_set_progname (argv[0]); + kpse_init_prog ('VFTOVP', 0, nil, nil); + parse_arguments; +@z + +% [4] No name_length. +% Also, AIX defines `class' in <math.h>, so let's take this opportunity to +% define that away. +@x +@<Constants...@>= +@y +@d class == class_var +@<Constants...@>= +@z + +@x +@!name_length=50; {a file name shouldn't be longer than this} +@y +@z + +@x [11] Open the files. +@ 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); reset(vf_file); +@y +@ We don't have to do anything special to read a packed file of bytes, +but we do want to use environment variables to find the input files. +@^system dependencies@> + +@<Set init...@>= +{See comments at |kpse_find_vf| in \.{kpathsea/tex-file.h} for why we + don't use it.} +vf_file := kpse_open_file (vf_name, kpse_ovf_format); +tfm_file := kpse_open_file (tfm_name, kpse_ofm_format); + +if verbose then begin + print (banner); + print_ln (version_string); +end; +@z + +@x [21] Open VPL file. +@!vpl_file:text; + +@ @<Set init...@>= +rewrite(vpl_file); +@y +@!vpl_file:text; + +@ If an explicit filename isn't given, we write to |stdout|. + +@<Set init...@>= +if optind + 3 > argc then begin + vpl_file := stdout; +end else begin + vpl_name := extend_filename (cmdline (optind + 2), 'ovp'); + rewrite (vpl_file, vpl_name); +end; +@z + +% [24] `index' is not a good choice of identifier in C. +@x +@<Types...@>= +@!index=0..tfm_size; {address of a byte in |tfm|} +@y +@d index == index_type + +@<Types...@>= +@!index=0..tfm_size; {address of a byte in |tfm|} +@z + +% [24] abort() should cause a bad exit code. +@x +@d abort(#)==begin print_ln(#); + print_ln('Sorry, but I can''t go on; are you sure this is a OFM?'); + goto final_end; + end +@y +@d abort(#)==begin print_ln(#); + write_ln(stderr, 'Sorry, but I can''t go on; are you sure this is a OFM?'); + uexit(1); + end +@z + +% [31] Ditto for vf_abort. +@x +@d vf_abort(#)==begin + print_ln(#); + print_ln('Sorry, but I can''t go on; are you sure this is a OVF?'); + goto final_end; + end +@y +@d vf_abort(#)==begin + write_ln(stderr, #); + write_ln(stderr, 'Sorry, but I can''t go on; are you sure this is a OVF?'); + uexit(1); + end +@z + +@x [32] Be quiet if not -verbose. +for k:=0 to vf_ptr-1 do print(xchr[vf[k]]); +print_ln(' '); reg_count:=0; +@y +if verbose then begin + for k:=0 to vf_ptr-1 do print(xchr[vf[k]]); + print_ln(' '); +end; +reg_count:=0; +@z + +@x [35] Be quiet if not -verbose. +@<Print the name of the local font@>; +@y +if verbose then begin + @<Print the name of the local font@>; +end; +@z + +@x [36] Output of real numbers. +print_ln(' at ',(((vf[k]*256+vf[k+1])*256+vf[k+2])/@'4000000)*real_dsize:2:2, + 'pt') +@y +print(' at '); +print_real((((vf[k]*256+vf[k+1])*256+vf[k+2])/@'4000000)*real_dsize, 2, 2); +print_ln('pt') +@z + +@x [37] No arbitrary max on cur_name. +@!cur_name:packed array[1..name_length] of char; {external name, + with no lower case letters} +@y +@!cur_name:^char; {external tfm name} +@z + +@x [39] Open another TFM file. +reset(tfm_file,cur_name); +@^system dependencies@> +if eof(tfm_file) then + print_ln('---not loaded, font metric file can''t be opened!') +@.font metric file can\'t be opened@> +else begin font_bc:=0; font_ec:=65536; {will cause error if not modified soon} +@y +tfm_file := kpse_open_file (cur_name, kpse_ofm_format); +@^system dependencies@> +if eof(tfm_file) then + print_ln('---not loaded, font metric file can''t be opened!') +@.font metric file can\'t be opened@> +else begin font_bc:=0; font_ec:=65536; {will cause error if not modified soon} +@z + +@x [40] Be quiet if not -verbose. + print_ln('Check sum in OVF file being replaced by font metric check sum'); +@y + if verbose then + print_ln('Check sum in OVF file being replaced by font metric check sum'); +@z + +@x [42] Remove initialization of now-defunct array. +@ @<Set init...@>= +default_directory:=default_directory_name; +@y +@ (No initialization to be done. Keep this module to preserve numbering.) +@z + +@x [44] Don't append `.tfm' here, and keep lowercase. +for k:=1 to name_length do cur_name[k]:=' '; +if a=0 then begin + for k:=1 to default_directory_name_length do + cur_name[k]:=default_directory[k]; + r:=default_directory_name_length; + end +else r:=0; +for k:=font_start[font_ptr]+14 to vf_ptr-1 do begin + incr(r); + if r+4>name_length then vf_abort('Font name too long for me!'); +@.Font name too long for me@> + if (vf[k]>="a")and(vf[k]<="z") then + cur_name[r]:=xchr[vf[k]-@'40] + else cur_name[r]:=xchr[vf[k]]; + end; +cur_name[r+1]:='.'; cur_name[r+2]:='T'; cur_name[r+3]:='F'; cur_name[r+4]:='M' +@y +@ The string |cur_name| is supposed to be set to the external name of the +\.{TFM} file for the current font. We do not impose an arbitrary limit +on the filename length. +@^system dependencies@> + +@d name_start == (font_start[font_ptr] + 14) +@d name_end == vf_ptr + +@<Move font name into the |cur_name| string@>= +r := name_end - name_start; +cur_name := xmalloc (r + 1); +{|strncpy| might be faster, but it's probably a good idea to keep the + |xchr| translation.} +for k := name_start to name_end do begin + cur_name[k - name_start] := xchr[vf[k]]; +end; +cur_name[r] := 0; {Append null byte since this is C.} +@z + +@x [49] Change strings to C char pointers, so we can initialize them. +@!ASCII_04,@!ASCII_10,@!ASCII_14,HEX: packed array [1..32] of char; + {strings for output in the user's external character set} +@!xchr:packed array [0..255] of char; +@!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,HEX: c_string; + {strings for output in the user's external character set} +@!ASCII_all: packed array[0..256] of char; +@!xchr:packed array [0..255] of char; +@!MBL_string,@!RI_string,@!RCE_string: c_string; + {handy string constants for |face| codes} +@z + +@x [50] The Pascal strings are indexed starting at 1, so we pad with a blank. +ASCII_04:=' !"#$%&''()*+,-./0123456789:;<=>?';@/ +ASCII_10:='@@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_';@/ +ASCII_14:='`abcdefghijklmnopqrstuvwxyz{|}~?';@/ +HEX:='0123456789ABCDEF';@/ +@y +ASCII_04:=' !"#$%&''()*+,-./0123456789:;<=>?';@/ +ASCII_10:=' @@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_';@/ +ASCII_14:=' `abcdefghijklmnopqrstuvwxyz{|}~?';@/ +HEX:=' 0123456789ABCDEF';@/ +strcpy (ASCII_all, ASCII_04); +strcat (ASCII_all, '@@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_'); +strcat (ASCII_all, '`abcdefghijklmnopqrstuvwxyz{|}~');@/ +@z + +@x +MBL_string:='MBL'; RI_string:='RI '; RCE_string:='RCE'; +@y +MBL_string:=' MBL'; RI_string:=' RI '; RCE_string:=' RCE'; +@z + +% [60] How we output the character code depends on |charcode_format|. +@x +begin if font_type>vanilla then + out_hex_char(c) +else if (c>="0")and(c<="9") then + out(' C ',c-"0":1) +else if (c>="A")and(c<="Z") then + out(' C ',ASCII_10[c-"A"+2]) +else if (c>="a")and(c<="z") then + out(' C ',ASCII_14[c-"a"+2]) +else out_hex_char(c); +end; +@y +begin if (font_type > vanilla) or (charcode_format = charcode_hex) then + out_hex_char(c) +else if (charcode_format = charcode_ascii) and (c > " ") and (c <= "~") + and (c <> "(") and (c <> ")") then + out(' C ', ASCII_all[c - " " + 1]) +{default case, use hex} +else out_hex_char(c); +end; +@z + +% [61] 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)], vpl_file); + put_byte(RI_string[1+s], vpl_file); + put_byte(RCE_string[1+(b div 3)], vpl_file); +@z + +@x [62] Force 32-bit constant arithmetic for 16-bit machines. +f:=((tfm[k+1] mod 16)*@'400+tfm[k+2])*@'400+tfm[k+3]; +@y +f:=((tfm[k+1] mod 16)*intcast(@'400)+tfm[k+2])*@'400+tfm[k+3]; +@z + +% [100] No progress reports unless verbose. +@x + incr(chars_on_line); + end; + for cprime:=c to (c+no_repeats(c)) do begin + print_hex(cprime); {progress report} +@y + if verbose then incr(chars_on_line); + end; + for cprime:=c to (c+no_repeats(c)) do begin + if verbose then print_hex(cprime); {progress report} +@z + +% [112] No nonlocal goto's. +@x + print_ln('Sorry, I haven''t room for so many ligature/kern pairs!'); +@.Sorry, I haven't room...@> + goto final_end; +@y + write_ln(stderr, 'Sorry, I haven''t room for so many ligature/kern pairs!'); +@.Sorry, I haven't room...@> + uexit(1); +@z + +% still [112] We can't have a function named `f', because of the local +% variable in do_simple_things. It would be better, but harder, to fix +% web2c. +@x + r:=f(r,(hash[r]-1)div xmax_char,(hash[r]-1)mod xmax_char); +@y + r:=lig_f(r,(hash[r]-1)div xmax_char,(hash[r]-1)mod xmax_char); +@z + +@x + out('(INFINITE LIGATURE LOOP MUST BE BROKEN!)'); goto final_end; +@y + out('(INFINITE LIGATURE LOOP MUST BE BROKEN!)'); uexit(1); +@z + +% [116] 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:index):index; forward;@t\2@> + {compute $f$ for arguments known to be in |hash[h]|} +@y +@p +ifdef('notdef') +function lig_f(@!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:=lig_f(h,x,y); +@z + +@x [117] ... and then really define it now. +@p function f; +@y +@p function lig_f(@!h,@!x,@!y:index):index; +@z + +@x +f:=lig_z[h]; +@y +lig_f:=lig_z[h]; +@z + +@x [124] Some cc's can't handle 136 case labels. + o:=vf[vf_ptr]; incr(vf_ptr); + case o of + @<Cases of \.{DVI} instructions that can appear in character packets@>@; +@y + o:=vf[vf_ptr]; incr(vf_ptr); + if ((o<=set_char_0+127))or + ((o>=set1)and(o<=set1+3))or((o>=put1)and(o<=put1+3)) then +begin if o>=set1 then + if o>=put1 then c:=get_bytes(o-put1+1,false) + else c:=get_bytes(o-set1+1,false) + else c:=o; + if f=font_ptr then + bad_vf('Character ',c:1,' in undeclared font will be ignored') +@.Character...will be ignored@> + else begin vf[font_start[f+1]-1]:=c; {store |c| in the ``hole'' we left} + k:=font_chars[f];@+while vf[k]<>c do incr(k); + if k=font_start[f+1]-1 then + bad_vf('Character ',c:1,' in font ',f:1,' will be ignored') + else begin if o>=put1 then out('(PUSH)'); + left; out('SETCHAR'); out_char(c); + if o>=put1 then out(')(POP'); + right; + end; + end; + end + else case o of + @<Cases of \.{DVI} instructions that can appear in character packets@> +@z + +@x [125] `signed' is a reserved word in ANSI C. +@p function get_bytes(@!k:integer;@!signed:boolean):integer; +@y +@d signed == is_signed {|signed| is a reserved word in ANSI C} +@p function get_bytes(@!k:integer;@!signed:boolean):integer; +@z + +@x [126] No nonlocal goto's. + begin print_ln('Stack overflow!'); goto final_end; +@y + begin write_ln(stderr, 'Stack overflow!'); uexit(1); +@z + +@x [129] This code moved outside the case statement +@ Before we typeset a character we make sure that it exists. + +@<Cases...@>= +sixty_four_cases(set_char_0),sixty_four_cases(set_char_0+64), + four_cases(set1),four_cases(put1):begin if o>=set1 then + if o>=put1 then c:=get_bytes(o-put1+1,false) + else c:=get_bytes(o-set1+1,false) + else c:=o; + if f=font_ptr then + bad_vf('Character ',c:1,' in undeclared font will be ignored') +@.Character...will be ignored@> + else begin vf[font_start[f+1]-1]:=c; {store |c| in the ``hole'' we left} + k:=font_chars[f];@+while vf[k]<>c do incr(k); + if k=font_start[f+1]-1 then + bad_vf('Character ',c:1,' in font ',f:1,' will be ignored') + else begin if o>=put1 then out('(PUSH)'); + left; out('SETCHAR'); out_char(c); + if o>=put1 then out(')(POP'); + right; + end; + end; + end; +@y +@ Before we typeset a character we make sure that it exists. +(These cases moved outside the case statement, section 124.) +@z + +@x [134] No final newline unless verbose. +print_ln('.');@/ +@y +if verbose then print_ln('.');@/ +@z + +@x [135] System-dependent changes. +This section should be replaced, if necessary, by changes to the program +that are necessary to make \.{VFtoVP} work at a particular installation. +It is usually best to design your change file so that all changes to +previous sections preserve the section numbering; then everybody's version +will be consistent with the printed program. More extensive changes, +which introduce new sections, can be inserted here; then only the index +itself will get a new section number. +@^system dependencies@> +@y +Parse a Unix-style command line. + +@d argument_is (#) == (strcmp (long_options[option_index].name, #) = 0) + +@<Define |parse_arguments|@> = +procedure parse_arguments; +const n_options = 4; {Pascal won't count array lengths for us.} +var @!long_options: array[0..n_options] of getopt_struct; + @!getopt_return_val: integer; + @!option_index: c_int_type; + @!current_option: 0..n_options; +begin + @<Initialize the option variables@>; + @<Define the option table@>; + repeat + getopt_return_val := getopt_long_only (argc, argv, '', long_options, + address_of (option_index)); + if getopt_return_val = -1 then begin + {End of arguments; we exit the loop below.} ; + end else if getopt_return_val = "?" then begin + usage ('ovf2ovp'); + + end else if argument_is ('help') then begin + usage_help (OVF2OVP_HELP, nil); + + end else if argument_is ('version') then begin + print_version_and_exit + (banner, nil, 'J. Plaice, Y. Haralambous, D.E. Knuth'); + + end else if argument_is ('charcode-format') then begin + if strcmp (optarg, 'ascii') = 0 then + charcode_format := charcode_ascii + else if strcmp (optarg, 'hex') = 0 then + charcode_format := charcode_hex + else + write_ln (stderr, 'Bad character code format', optarg, '.'); + + end; {Else it was a flag; |getopt| has already done the assignment.} + until getopt_return_val = -1; + + {Now |optind| is the index of first non-option on the command line. + We must have one two three remaining arguments.} + if (optind + 1 <> argc) and (optind + 2 <> argc) + and (optind + 3 <> argc) then begin + write_ln (stderr, 'ovf2ovp: Need one to three file arguments.'); + usage ('ovf2ovp'); + end; + + vf_name := cmdline (optind); + if optind + 2 <= argc then begin + tfm_name := cmdline (optind + 1); {The user specified the TFM name.} + end else begin + {User did not specify TFM name; default it from the VF name.} + tfm_name := basename_change_suffix (vf_name, '.ovf', '.ofm'); + end; +end; + +@ Here are the options we allow. The first is one of the standard GNU options. +@.-help@> + +@<Define the option...@> = +current_option := 0; +long_options[current_option].name := 'help'; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := 0; +long_options[current_option].val := 0; +incr (current_option); + +@ Another of the standard options. +@.-version@> + +@<Define the option...@> = +long_options[current_option].name := 'version'; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := 0; +long_options[current_option].val := 0; +incr (current_option); + +@ Print progress information? +@.-verbose@> + +@<Define the option...@> = +long_options[current_option].name := 'verbose'; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := address_of (verbose); +long_options[current_option].val := 1; +incr (current_option); + +@ The global variable |verbose| determines whether or not we print +progress information. + +@<Glob...@> = +@!verbose: c_int_type; + +@ It starts off |false|. + +@<Initialize the option...@> = +verbose := false; + +@ Here is an option to change how we output character codes. +@.-charcode-format@> + +@<Define the option...@> = +long_options[current_option].name := 'charcode-format'; +long_options[current_option].has_arg := 1; +long_options[current_option].flag := 0; +long_options[current_option].val := 0; +incr (current_option); + +@ We use an ``enumerated'' type to store the information. + +@<Type...@> = +@!charcode_format_type = charcode_ascii..charcode_default; + +@ +@<Const...@> = +@!charcode_ascii = 0; +@!charcode_hex = 1; +@!charcode_default = 2; + +@ +@<Global...@> = +@!charcode_format: charcode_format_type; + +@ It starts off as the default, which is hex for OFM2OPL. + +@<Initialize the option...@> = +charcode_format := charcode_default; + +@ An element with all zeros always ends the list. + +@<Define the option...@> = +long_options[current_option].name := 0; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := 0; +long_options[current_option].val := 0; + +@ Global filenames. + +@<Global...@> = +@!vf_name, @!tfm_name, @!vpl_name:c_string; +@z |