File: latex.c

package info (click to toggle)
c2man 2.41-11
  • links: PTS
  • area: main
  • in suites: potato
  • size: 800 kB
  • ctags: 863
  • sloc: ansic: 6,559; sh: 5,236; yacc: 839; lex: 621; makefile: 229; perl: 81
file content (356 lines) | stat: -rw-r--r-- 7,391 bytes parent folder | download | duplicates (6)
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
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
/* $Id: latex.c,v 2.0.1.12 1995/07/07 00:46:47 greyham Exp $
 * functions for LaTeX style output.
 */
#include "c2man.h"
#include "manpage.h"
#include "output.h"
#include <ctype.h>

static boolean verbatim = FALSE;	/* skip quoting in verbatim section */

void latex_char(c)
const int c;
{
    int i;

    switch (c)
    {
    case '$':
    case '#':
    case '&':
    case '^':
    case '_':
	if (!verbatim)
	    putchar('\\');
	putchar(c);
	break;
    case '>':
    case '<':
	if (!verbatim)
	    putchar('$');
	putchar(c);
	if (!verbatim)
	    putchar('$');
	break;
    case '\t':
	for (i = 0; i < NUM_TAB_SPACES; i++)
	    putchar(' ');
	break;
    default:
	putchar(c);
	break;
    }
}

void latex_text(text)
const char *text;
{
    while(*text)
	latex_char(*text++);
}

void latex_comment() { put_string("% "); }

void latex_header(firstpage, input_files, grouped, name, terse, section)
ManualPage *firstpage;
int input_files;
boolean grouped;
const char *name;
const char *terse;
const char *section;
{
    if (make_embeddable) return;

    put_string("\\documentstyle{article}\n");
    output_warning();
	put_string("\\begin{document}\n");
}

void latex_dash()	{ put_string("---"); }

void latex_section(name)
const char *name;
{
    put_string("\\section*{");
    latex_text(name);
    put_string("}\n");
}

void latex_sub_section(name)
const char *name;
{
    put_string("\\subsection*{");
    latex_text(name);
    put_string("}\n");
}

void latex_break_line() { /* put_string("\\newline\n"); */ }
void latex_blank_line() { put_string("\n"); }

void latex_code_start() { put_string("\\begin{verbatim}\n"); verbatim = TRUE; }
void latex_code_end()	{ put_string("\\end{verbatim}\n"); verbatim = FALSE; }

void latex_code(text)
const char *text;
{
    put_string("\\verb`");
    put_string(text);
    put_string("`");
}

void latex_tag_list_start()	{ put_string("\\begin{description}\n"); }
void latex_tag_entry_start()	{ put_string("\\item["); }
void latex_tag_entry_end()	{ put_string("]\\hfill\\newline\n"); }
void latex_tag_entry_end_extra(text)
const char *text;
{
    put_string("(");
    latex_text(text);
    put_string(")");
	latex_tag_entry_end();
}
void latex_tag_list_end()	{ put_string("\\end{description}\n"); }
	
void latex_table_start(longestag)
const char *longestag;
{ put_string("\\begin{description}\n"); }

void latex_table_entry(name, description)
const char *name;
const char *description;
{
    put_string("\\item[");
    latex_text(name);
    put_string("]\n");
    if (description)
	output_comment(description);
    else
	latex_char('\n');
}

void latex_table_end()	{ put_string("\\end{description}\n"); }

void latex_list_entry(text)
const char *text;
{
    latex_text(text);
}
void latex_list_separator() { put_string(",\n"); }
void latex_list_end()	{ latex_char('\n'); }

void latex_include(filename)
const char *filename;
{
	put_string("\\include{");
	latex_text(filename);
	put_string("}\n");
}

void latex_file_end() { put_string("\\end{document}\n"); }

void latex_name(name)
const char *name;
{
    if (name) latex_text(name);
    else      latex_section("NAME");
}

void latex_terse_sep()
{
    latex_char(' ');
    latex_dash();
    latex_char(' ');
}

void latex_reference(text)
const char *text;
{
    latex_text(text);
    latex_char('(');
    latex_text(manual_section);
    latex_char(')');
}

/* ideally, this should be made aware of embedded latex commands */
void latex_description(text)
const char *text;
{
    enum { TEXT, PERIOD, CAPITALISE } state = CAPITALISE;
    boolean new_line = TRUE;
    
    /* correct punctuation a bit as it goes out */
    for (;*text;text++)
    {
	int c = *text;

	if (new_line && (c == '-' || c == '*'))
	{
	    output->break_line();
	    state = CAPITALISE;
	}
	else if (c == '.')
	    state = PERIOD;
	else if (isspace(c) && state == PERIOD)
	    state = CAPITALISE;
	else if (isalnum(c))
	{   
	    if (islower(c) && state == CAPITALISE)	c = toupper(c);
	    state = TEXT;
	}
           
	output->character(c);
	new_line = c == '\n';
    }

    /* do a full stop if there wasn't one */
    if (state == TEXT)	output->character('.');
}

/* ideally, this should be made aware of embedded latex commands */
void
latex_returns(comment)
const char *comment;
{
    enum { TEXT, PERIOD, CAPITALISE } state = CAPITALISE;
    char lastchar = '\n';
    boolean tag_list_started = FALSE;

    /* for each line... */
    while (*comment)
    {
	boolean tagged = FALSE;

	{
	    const char *c = comment;

	    /* search along until the end of a word */
	    while (*c && *c != ':' && !isspace(*c))
		c++;

	    /* skip all spaces or tabs after the first word */
	    while (*c && *c != '\n')
	    {
		if (*c == '\t' || *c == ':')
		{
		    tagged = TRUE;
		    break;
		}
		else if (!isspace(*c))
		    break;

		c++;
	    }
	}

	/* is it tagged?; explicitly reject dot commands */
	if (tagged)
	{
	    /* output lingering newline if necessary */
	    if (lastchar != '\n')
	    {
		if (state == TEXT && !ispunct(lastchar))	output->character('.');
		output->character(lastchar = '\n');
	    }

	    if (!tag_list_started)
	    {
		output->tag_list_start();
		tag_list_started = TRUE;
	    }

	    /* output the taggy bit */
	    output->tag_entry_start();
	    while (*comment && *comment != ':' && !isspace(*comment))
		output->character(*comment++);
	    output->tag_entry_end();

	    /* skip any extra tabs or spaces */
	    while (*comment == ':' || (isspace(*comment) && *comment != '\n'))
		comment++;

	    state = CAPITALISE;
	}

	/* terminate the previous line if necessary */
	if (lastchar != '\n')	output->character(lastchar = '\n');

	/* correct punctuation a bit as the line goes out */
	for (;*comment && *comment != '\n'; comment++)
	{
	    char c = *comment;

	    if (c == '.')
		state = PERIOD;
	    else if (isspace(c) && state == PERIOD)
		state = CAPITALISE;
	    else if (isalnum(c))
	    {   
		if (islower(c) && state == CAPITALISE && fixup_comments)
		    c = toupper(c);
		state = TEXT;
	    }

	    output->character(lastchar = c);
	}

	/* if it ended in punctuation, just output the nl straight away. */
	if (ispunct(lastchar))
	{
	    if (lastchar == '.')	state = CAPITALISE;
	    output->character(lastchar = '\n');
	}

	if (*comment)	comment++;
    }

    /* output lingering newline if necessary */
    if (lastchar != '\n')
    {
	if (state == TEXT && !ispunct(lastchar) && fixup_comments)
	    output->character('.');
	output->character('\n');
    }

    if (tag_list_started)
	output->tag_list_end();
}

struct Output latex_output =
{
    latex_comment,
    latex_header,
    latex_dash,
    latex_section,
    latex_sub_section,
    latex_break_line,
    latex_blank_line,
    latex_code_start,
    latex_code_end,
    latex_code,
    latex_tag_list_start,
    latex_tag_list_end,
    latex_tag_entry_start,
    latex_tag_entry_start,	/* entry_start_extra */
    latex_tag_entry_end,
    latex_tag_entry_end_extra,
    latex_table_start,
    latex_table_entry,
    latex_table_end,
    dummy,		/* latex_indent */
    dummy,		/* latex_list_start */
    latex_list_entry,
    latex_list_separator,
    latex_list_end,
    latex_include,
    latex_file_end,
    latex_text,
    latex_char,
    NULL,		/* latex_parse_option */
    dummy,		/* latex_print_option */
    latex_name,
    latex_terse_sep,
    latex_reference,
    latex_text,
    latex_description,
    latex_returns
};