diff options
author | Karl Berry <karl@freefriends.org> | 2006-01-17 21:41:51 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2006-01-17 21:41:51 +0000 |
commit | 487ca4806cc046076293cf6cc5fbba0db282bac7 (patch) | |
tree | 847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/web2c/gftype.ch | |
parent | a3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff) |
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/web2c/gftype.ch')
-rw-r--r-- | Build/source/texk/web2c/gftype.ch | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/Build/source/texk/web2c/gftype.ch b/Build/source/texk/web2c/gftype.ch new file mode 100644 index 00000000000..9c52f5099fa --- /dev/null +++ b/Build/source/texk/web2c/gftype.ch @@ -0,0 +1,380 @@ +% gftype.ch for C compilation with web2c. +% +% 09/27/88 Pierre A. MacKay version 2.2. +% 11/10/88 (PAM) Bugs reported by Irwin Meisels. +% Corrected floating-point printout, and restored options +% info printout to make trap look better. +% 12/02/89 Karl Berry version 3. +% (more recent changes in the ChangeLog) +% +% The C version of GFtype uses command line switches to +% request mnemonic ouput or pixel image output. +% The default is a restrained output which merely assures you +% that all characters are there and reports their position, tfm_width +% and escapement. The -m switch turns on mnemonics, the -i switch +% turns on images. There is no terminal input to this program. +% Output is to stdout, and may, of course, be redirected. + +@x [0] WEAVE: print changes only. +\pageno=\contentspagenumber \advance\pageno by 1 +@y +\pageno=\contentspagenumber \advance\pageno by 1 +\let\maybe=\iffalse +\def\title{GF$\,$\lowercase{type} changes for C} +@z + +@x [3] No global labels. +@d print(#)==write(#) +@d print_ln(#)==write_ln(#) +@d print_nl==write_ln + +@p program GF_type(@!gf_file,@!output); +label @<Labels in the outer block@>@/ +const @<Constants in the outer block@>@/ +type @<Types in the outer block@>@/ +var @<Globals in the outer block@>@/ +procedure initialize; {this procedure gets things started properly} + var i:integer; {loop index for initializations} + begin print_ln(banner);@/ +@y +@d print(#)==write(stdout, #) +@d print_ln(#)==write_ln(stdout, #) +@d print_nl==write_ln(stdout) + +@p program GF_type(@!gf_file,@!output); +const @<Constants in the outer block@>@/ +type @<Types in the outer block@>@/ +var @<Globals in the outer block@>@/ +@<Define |parse_arguments|@> +procedure initialize; {this procedure gets things started properly} + var i:integer; {loop index for initializations} +begin + kpse_set_progname (argv[0]); + kpse_init_prog ('GFTYPE', 0, nil, nil); + parse_arguments; + print(banner);print_ln(version_string); +@z + +@x [4] Eliminate the |final_end| label. +@ If the program has to stop prematurely, it goes to the +`|final_end|'. + +@d final_end=9999 {label for the end of it all} + +@<Labels...@>=final_end; +@y +@ This module is deleted, because it is only useful for +a non-local goto, which we can't use in C. +@z + +@x [5] Remove |terminal_line_length|. +@<Constants...@>= +@!terminal_line_length=150; {maximum number of characters input in a single + line of input from the terminal} +@y +@<Constants...@>= +@z + +@x [7] Remove jump_out, and make `abort' end with a newline. +@d abort(#)==begin print(' ',#); jump_out; + end +@d bad_gf(#)==abort('Bad GF file: ',#,'!') +@.Bad GF file@> + +@p procedure jump_out; +begin goto final_end; +end; +@y +@d abort(#)==begin write_ln(stderr, #); uexit(1); end +@d bad_gf(#)==abort('Bad GF file: ',#,'!') +@.Bad GF file@> +@z + +@x [22] Redo open_gf_file to do path searching. +@ To prepare this file for input, we |reset| it. + +@p procedure open_gf_file; {prepares to read packed bytes in |gf_file|} +begin reset(gf_file); +cur_loc:=0; +end; +@y + +@ In C, we do path searching based on the user's environment or the +default path. + +@p procedure open_gf_file; {prepares to read packed bytes in |gf_file|} +begin + gf_file := kpse_open_file (cmdline (optind), kpse_gf_format); + cur_loc := 0; + @<Print all the selected options@>; +end; +@z + +@x [25] Since we set these from getopt, they have to be ints, more's the pity. +@!wants_mnemonics: boolean; {controls mnemonic output} +@!wants_pixels: boolean; {controls pixel output} +@y +@!wants_mnemonics: c_int_type; {controls mnemonic output} +@!wants_pixels: c_int_type; {controls pixel output} +@z + +% [26] Initialize wants_pixels and wants_mnemonics to false implicitly +% by virtue of being global variables. Can't do it here, since this is +% after the option parsing. +@x +wants_mnemonics:=true; wants_pixels:=true; +@y +@z + +@x [27] No input, and no dialog. +@ The |input_ln| routine waits for the user to type a line at his or her +terminal; then it puts ASCII-code equivalents for the characters on that line +into the |buffer| array. The |term_in| file is used for terminal input, +and |term_out| for terminal output. +@^system dependencies@> + +@<Glob...@>= +@!buffer:array[0..terminal_line_length] of ASCII_code; +@!term_in:text_file; {the terminal, considered as an input file} +@!term_out:text_file; {the terminal, considered as an output file} +@y +@ There is no terminal input. The options for running this +program are offered through command line options. +@z + +@x [29] `input_ln' is not needed. +@p procedure input_ln; {inputs a line from the terminal} +var k:0..terminal_line_length; +begin update_terminal; reset(term_in); +if eoln(term_in) then read_ln(term_in); +k:=0; +while (k<terminal_line_length)and not eoln(term_in) do + begin buffer[k]:=xord[term_in^]; incr(k); get(term_in); + end; +buffer[k]:=" "; +end; +@y +@z + +@x [30--34] Eliminate `dialog' and its friends. +@ This is humdrum. + +@p function lower_casify(@!c:ASCII_code):ASCII_code; +begin +if (c>="A") and (c<="Z") then lower_casify:=c+"a"-"A" +else lower_casify:=c; +end; + +@ The selected options are put into global variables by the |dialog| +procedure, which is called just as \.{GFtype} begins. +@^system dependencies@> + +@p procedure dialog; +label 1,2; +begin rewrite(term_out); {prepare the terminal for output} +write_ln(term_out,banner);@/ +@<Determine whether the user |wants_mnemonics|@>; +@<Determine whether the user |wants_pixels|@>; +@<Print all the selected options@>; +end; + +@ @<Determine whether the user |wants_mnemonics|@>= +1: write(term_out,'Mnemonic output? (default=no, ? for help): '); +@.Mnemonic output?@> +input_ln; +buffer[0]:=lower_casify(buffer[0]); +if buffer[0]<>"?" then + wants_mnemonics:=(buffer[0]="y")or(buffer[0]="1")or(buffer[0]="t") +else begin write(term_out,'Type Y for complete listing,'); + write_ln(term_out,' N for errors/images only.'); + goto 1; + end + +@ @<Determine whether the user |wants_pixels|@>= +2: write(term_out,'Pixel output? (default=yes, ? for help): '); +@.Pixel output?@> +input_ln; +buffer[0]:=lower_casify(buffer[0]); +if buffer[0]<>"?" then + wants_pixels:=(buffer[0]="y")or(buffer[0]="1")or(buffer[0]="t") + or(buffer[0]=" ") +else begin write(term_out,'Type Y to list characters pictorially'); + write_ln(term_out,' with *''s, N to omit this option.'); + goto 2; + end + +@ After the dialog is over, we print the options so that the user +can see what \.{GFtype} thought was specified. + +@y +@ This was so humdrum that we got rid of it. (module 30) + +@ The dialog procedure module is eliminated. (module 31) + +@ So is its first part. (module 32) + +@ So is its second part. (module 33) + +@ After the command-line switches have been processed, +we print the options so that the user +can see what \.{GFtype} thought was specified. +@z + +@x [45] Change chr to xchr (should be changed in the web source). + print(chr(ord('0')+(s div unity))); s:=10*(s mod unity); delta:=delta*10; +@y + print(xchr[ord('0')+(s div unity)]); s:=10*(s mod unity); delta:=delta*10; +@z + +@x [48] Break up the first oversized case statement (or yacc breaks). +sixty_four_cases(new_row_0), sixty_four_cases(new_row_0+64), + thirty_seven_cases(new_row_0+128): first_par:=o-new_row_0; +@y +sixty_four_cases(new_row_0): first_par:=o-new_row_0; +sixty_four_cases(new_row_0+64): first_par:=o-new_row_0; +thirty_seven_cases(new_row_0+128): first_par:=o-new_row_0; +@z + +@x [64] Break up the second oversized case statement. +sixty_four_cases(new_row_0), sixty_four_cases(new_row_0+64), + thirty_seven_cases(new_row_0+128): + @<Translate a |new_row| command@>; +@t\4@>@<Cases for commands |no_op|, |pre|, |post|, |post_post|, |boc|, + and |eoc|@>@; +four_cases(xxx1): @<Translate an |xxx| command@>; +yyy: @<Translate a |yyy| command@>; +othercases error('undefined command ',o:1,'!') +@.undefined command@> +endcases +@y +sixty_four_cases(new_row_0): @<Translate a |new_row| command@>; +sixty_four_cases(new_row_0+64): @<Translate a |new_row| command@>; +thirty_seven_cases(new_row_0+128): @<Translate a |new_row| command@>; +@t\4@>@<Cases for commands |no_op|, |pre|, |post|, |post_post|, |boc|, + and |eoc|@>@; +four_cases(xxx1): @<Translate an |xxx| command@>; +yyy: @<Translate a |yyy| command@>; +othercases error('undefined command ',o:1,'!') +@.undefined command@> +endcases +@z + +@x [65] No label and no dialog; finish last line written. +@p begin initialize; {get all variables initialized} +dialog; {set up all the options} +@<Process the preamble@>; +@<Translate all the characters@>; +print_nl; +read_postamble; +print('The file had ',total_chars:1,' character'); +if total_chars<>1 then print('s'); +print(' altogether.'); +@.The file had n characters...@> +final_end:end. +@y +@p begin initialize; {get all variables initialized} +@<Process the preamble@>; +@<Translate all the characters@>; +print_nl; +read_postamble; +print('The file had ',total_chars:1,' character'); +if total_chars<>1 then print('s'); +print_ln(' altogether.'); +@.The file had n characters...@> +end. +@z + +@x System-dependent changes. +This section should be replaced, if necessary, by changes to the program +that are necessary to make \.{GFtype} 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 + @<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 ('gftype'); + + end else if argument_is ('help') then begin + usage_help (GFTYPE_HELP, nil); + + end else if argument_is ('version') then begin + print_version_and_exit (banner, nil, 'D.R. Fuchs'); + + end; {Else it was a flag.} + until getopt_return_val = -1; + + {Now |optind| is the index of first non-option on the command line. + We must have one remaining argument.} + if (optind + 1 <> argc) then begin + write_ln (stderr, 'gftype: Need exactly one file argument.'); + usage ('gftype'); + 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); + +@ Translate commands? +@<Define the option...@> = +long_options[current_option].name := 'mnemonics'; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := address_of (wants_mnemonics); +long_options[current_option].val := 1; +incr (current_option); + +@ Show pixels? +@<Define the option...@> = +long_options[current_option].name := 'images'; +long_options[current_option].has_arg := 0; +long_options[current_option].flag := address_of (wants_pixels); +long_options[current_option].val := 1; +incr (current_option); + +@ 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; +@z |