1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
This is a change file of DVItype for FPC, Wolfgang Helbig, Oct. 2020
[0] About DVItype-FPC
@x
\pageno=\contentspagenumber \advance\pageno by 1
@y
\pageno=\contentspagenumber \advance\pageno by 1
\input webmac-fpc
% \let\maybe=\iftrue % uncomment to print changed modules only.
\def\name{\tt DVItype}
\N0\*. About \namefpc.\fi
This is an adaption of Donald~E. Knuth's \.{DVItype} to the Free Pascal
Compiler and Unix.
\namefpc\ expects the name of the input file (\.{.dvi}) as the first
and the name of the output file (\.{.typ} as the second parameter
on the command line.
\hint
Comments and questions are welcome!
\bigskip
\address
@z
[1] Change the banner line
@x
@d banner=='This is DVItype, Version 3.6' {printed when the program starts}
@y
@d banner=='This is DVItype-FPC, 2nd ed.' {printed when the program starts}
@z
[2] othercases
@x
@d othercases == others: {default for cases not listed explicitly}
@y
@d othercases == @+ else {default for cases not listed explicitly}
@z
[3] filenames from commandline
@x
@d print(#)==write(#)
@d print_ln(#)==write_ln(#)
@p program DVI_type(@!dvi_file,@!output);
@y
@d print(#)==write(typ_file, #)
@d print_ln(#)==write_ln(typ_file, #)
@p @{$MODE@,ISO@}
@/
@{$Q+@}
@/
@{$R+@}
@/
@{$I+@}
@#
program DVI_type(@!input, @!output);
@z
[9] text file.
@x
@!text_file=packed file of text_char;
@y
@!text_file=text;
@z
[22] check io_result.
@x
@!dvi_file:byte_file; {the stuff we are \.{DVI}typing}
@!tfm_file:byte_file; {a font metric file}
@y
@!dvi_file:byte_file; {the stuff we are \.{DVI}typing}
@!tfm_file:byte_file; {a font metric file}
@!tfm_open:boolean; {tfm file is open}
@!typ_file: text; {output file}
@z
[23] open dvi file
@x
begin reset(dvi_file);
@y
begin assign(dvi_file, param_str(1));
@#
@{$I-@}
@#
io_result; reset(dvi_file);
if io_result <> 0 then begin
write_ln('Could not open dvi file: ', param_str(1));
halt(1);
end;
@#
@{$I+@}
@#
@z
[23] open tfm file
@x
procedure open_tfm_file; {prepares to read packed bytes in |tfm_file|}
begin reset(tfm_file,cur_name);
end;
@y
procedure open_tfm_file; {prepares to read packed bytes in |tfm_file|}
begin
io_result; assign(tfm_file, cur_name);
@#
@{$I-@}
@#
reset(tfm_file);
tfm_open := io_result = 0;
if not tfm_open then write_ln(cur_name, ' failed to open');
end;
@#
procedure open_typ_file;
begin
if paramcount <> 2 then begin
write_ln('Usage: ', param_str(0), ' dvi_file typ_file');
halt(1);
end;
io_result; assign(typ_file, param_str(2)); rewrite(typ_file);
if io_result <> 0 then begin
write_ln('Could not open type file: ', param_str(2));
halt(1);
end;
end;
@#
@{$I+@}
@#
@z
[24] cur_name is shortstring;
@x
@!cur_name:packed array[1..name_length] of char; {external name,
@y
@!cur_name: shortstring; {external name,
@z
[25] random file access
@x
@p function dvi_length:integer;
begin set_pos(dvi_file,-1); dvi_length:=cur_pos(dvi_file);
end;
@#
procedure move_to_byte(n:integer);
begin set_pos(dvi_file,n); cur_loc:=n;
end;
@y
@p function dvi_length:integer;
begin dvi_length:=file_size(dvi_file);
end;
@#
procedure move_to_byte(n:integer);
begin seek(dvi_file,n); cur_loc:=n;
end;
@z
[43] options
@x
out_mode:=the_works; max_pages:=1000000; start_vals:=0; start_there[0]:=false;
@y
out_mode:=2; max_pages:=1000000; start_vals:=9;
for i := 0 to 9 do start_there[i] := false;
@z
[45] standard io files
@x
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
and |term_out| for terminal output.
@^system dependencies@>
@d term_in == input
@d term_out == output
@<Glob...@>=
@!buffer:array[0..terminal_line_length] of ASCII_code;
@z
[46] no break known to fpc
@x
@d update_terminal == break(term_out) {empty the terminal output buffer}
@y
@d update_terminal == {empty the terminal output buffer}
@z
[47] input_ln
@x
@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
@p procedure input_ln; {inputs a line from the terminal}
var k:0..terminal_line_length;
begin
k:=0;
while (k<terminal_line_length) and not eoln do
begin buffer[k]:=xord[input^]; incr(k); get(input);
end;
readln;
buffer[k]:=" ";
end;
@z
[62] check if tfm file open.
@x
if eof(tfm_file) then
@y
if not tfm_open then
@z
[64] default directory
@x
@d default_directory_name=='TeXfonts:' {change this to the correct name}
@y
@d default_directory_name=='TeXfonts/' {change this to the correct name}
@z
[66] lower case letters in Unix
@x
for k:=1 to name_length do cur_name[k]:=' ';
if p=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_name[nf] to font_name[nf+1]-1 do
begin incr(r);
if r+4>name_length then
abort('DVItype capacity exceeded (max font name length=',
name_length:1,')!');
@.DVItype capacity exceeded...@>
if (names[k]>="a")and(names[k]<="z") then
cur_name[r]:=xchr[names[k]-@'40]
else cur_name[r]:=xchr[names[k]];
end;
cur_name[r+1]:='.'; cur_name[r+2]:='T'; cur_name[r+3]:='F'; cur_name[r+4]:='M'
@y
setlength(cur_name, 255);
if p=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_name[nf] to font_name[nf+1]-1 do
begin incr(r);
if r+4>name_length then
abort('DVItype capacity exceeded (max font name length=',
name_length:1,')!');
@.DVItype capacity exceeded...@>
cur_name[r]:=xchr[names[k]];
end;
cur_name[r+1]:='.'; cur_name[r+2]:='t'; cur_name[r+3]:='f'; cur_name[r+4]:='m'
;setlength(cur_name, r+4)
@z
[105] premature eof on tfm file
@x
while (m=223)and not eof(dvi_file) do m:=get_byte;
@y
while (m=223)and not eof(dvi_file) do m:=get_byte;
inc(cur_loc); {FPC-BUG: eof off by one}
@z
[107] open typ file
@x
@p begin initialize; {get all variables initialized}
@y
@p begin open_typ_file; {initialze prints banner on typ file}
initialize; {get all variables initialized}
@z
[107 close type file
@x
final_end:end.
@y
close(typ_file);
final_end:end.
@z
|
