From 487ca4806cc046076293cf6cc5fbba0db282bac7 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Tue, 17 Jan 2006 21:41:51 +0000 Subject: texk 1 git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751 --- Build/source/texk/web2c/vptovf.ch | 301 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 301 insertions(+) create mode 100644 Build/source/texk/web2c/vptovf.ch (limited to 'Build/source/texk/web2c/vptovf.ch') diff --git a/Build/source/texk/web2c/vptovf.ch b/Build/source/texk/web2c/vptovf.ch new file mode 100644 index 00000000000..667d0e59a87 --- /dev/null +++ b/Build/source/texk/web2c/vptovf.ch @@ -0,0 +1,301 @@ +% vptovf.ch for C compilation with web2c. + +@x [0] WEAVE: print changes only. +\pageno=\contentspagenumber \advance\pageno by 1 +@y +\pageno=\contentspagenumber \advance\pageno by 1 +\let\maybe=\iffalse +\def\title{VP$\,$\lowercase{to}$\,$VF changes for C} +@z + +@x [2] Print the banner later. +procedure initialize; {this procedure gets things started properly} + var @@/ + begin print_ln(banner);@/ +@y +@ +procedure initialize; {this procedure gets things started properly} + var @@/ + begin + kpse_set_progname (argv[0]); + parse_arguments; +@z + +@x [3] Increase constants. +@!buf_size=60; {length of lines displayed in error messages} +@!max_header_bytes=100; {four times the maximum number of words allowed in + the \.{TFM} file header block, must be 1024 or less} +@!vf_size=10000; {maximum length of |vf| data, in bytes} +@!max_stack=100; {maximum depth of simulated \.{DVI} stack} +@!max_param_words=30; {the maximum number of \.{fontdimen} parameters allowed} +@!max_lig_steps=5000; + {maximum length of ligature program, must be at most $32767-257=32510$} +@!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 +@!buf_size=3000; {length of lines displayed in error messages} +@!max_header_bytes=1000; {four times the maximum number of words allowed in + the \.{TFM} file header block, must be 1024 or less} +@!vf_size=100000; {maximum length of |vf| data, in bytes} +@!max_stack=100; {maximum depth of simulated \.{DVI} stack} +@!max_param_words=300; {the maximum number of \.{fontdimen} parameters allowed} +@!max_lig_steps=32510; + {maximum length of ligature program, must be at most $32767-257=32510$} +@!max_kerns=5000; {the maximum number of distinct kern values} +@!hash_size=32579; {preferably a prime number, a bit larger than the number + of character pairs in lig/kern steps} +@z + +@x [6] Open VPL file. +reset(vpl_file); +@y +reset (vpl_file, vpl_name); +if verbose then begin + print (banner); + print_ln (version_string); +end; +@z + +@x [22] Open output files. +@ 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@> + +@= +rewrite(vf_file); rewrite(tfm_file); +@y +@ On some systems you may have to do something special to write a +packed file of bytes. +@^system dependencies@> + +@= +rewritebin (vf_file, vf_name); +rewritebin (tfm_file, tfm_name); +@z + +% [89] `index' is not a good choice for an identifier on Unix systems. +% Neither is `class', on AIX. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +@x +|k|th element of its list. +@y +|k|th element of its list. + +@d index == index_var +@d class == class_var +@z + +@x [118] No output unless verbose. +@; +@y +if verbose then @; +@z + +@x [144] Output of real numbers. +@ @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 + +@x [152] Fix up the mutually recursive procedures a la pltotf. +@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 + +@x [153] Finish fixing up f. +@p function f; +@y +@p function f(@!h,@!x,@!y:indx):indx; +@z + +@x [156] Change TFM-byte output to fix ranges. +@d out(#)==write(tfm_file,#) +@y +@d out(#)==putbyte(#,tfm_file) +@z + +@x [165] Fix output of reals. +@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>intcast(char_remainder[c]) do +@z + +@x [175] Change VF-byte output to fix ranges. +@d vout(#)==write(vf_file,#) +@y +@d vout(#)==putbyte(#,vf_file) +@z + +@x [181] Be quiet unless verbose. +read_input; print_ln('.');@/ +@y +read_input; +if verbose then print_ln('.'); +@z + +@x [182] System-dependent changes. +This section should be replaced, if necessary, by changes to the program +that are necessary to make \.{VPtoVF} 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) + +@ = +procedure parse_arguments; +const n_options = 3; {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 + @; + @; + 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 ('vptovf'); {|getopt| has already given an error message.} + + end else if argument_is ('help') then begin + usage_help (VPTOVF_HELP, nil); + + end else if argument_is ('version') then begin + print_version_and_exit (banner, nil, 'D.E. Knuth'); + + 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 to three remaining arguments.} + if (optind + 1 <> argc) and (optind + 2 <> argc) + and (optind + 3 <> argc) then begin + write_ln (stderr, 'vptovf: Need one to three file arguments.'); + usage ('vptovf'); + end; + + vpl_name := extend_filename (cmdline (optind), 'vpl'); + + if optind + 2 <= argc then begin + {Specified one or both of the output files.} + vf_name := extend_filename (cmdline (optind + 1), 'vf'); + if optind + 3 <= argc then begin {Both.} + tfm_name := extend_filename (cmdline (optind + 2), 'tfm'); + end else begin {Just one.} + tfm_name := extend_filename (cmdline (optind + 1), 'tfm'); + end; + end else begin {Neither.} + vf_name := basename_change_suffix (vpl_name, '.vpl', '.vf'); + tfm_name := basename_change_suffix (vpl_name, '.vpl', '.tfm'); + end; +end; + +@ Here are the options we allow. The first is one of the standard GNU options. +@.-help@> + +@ = +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@> + +@ = +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@> + +@ = +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. + +@ = +@!verbose: c_int_type; + +@ It starts off |false|. + +@ = +verbose := false; + +@ An element with all zeros always ends the list. + +@ = +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. + +@ = +@!vpl_name, @!tfm_name, @!vf_name:c_string; +@z -- cgit v1.2.3