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1 | #!/usr/bin/awk | |
2 | # | |
3 | # Version history: | |
4 | # v3, I put the program under a proper license | |
5 | # Dan Nelson <dnelson@allantgroup.com> added .An, .Aq and fixed a typo | |
6 | # v2, fixed to work on GNU awk --posix and MacOS X | |
7 | # v1, first attempt, didn't work on MacOS X | |
8 | # | |
9 | # Copyright (c) 2003 Peter Stuge <stuge-mdoc2man@cdy.org> | |
10 | # | |
11 | # Permission to use, copy, modify, and distribute this software for any | |
12 | # purpose with or without fee is hereby granted, provided that the above | |
13 | # copyright notice and this permission notice appear in all copies. | |
14 | # | |
15 | # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
16 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
17 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
18 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
19 | # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
20 | # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
21 | # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
22 | ||
23 | ||
24 | BEGIN { | |
25 | optlist=0 | |
26 | oldoptlist=0 | |
27 | nospace=0 | |
28 | synopsis=0 | |
29 | reference=0 | |
30 | block=0 | |
31 | ext=0 | |
32 | extopt=0 | |
33 | literal=0 | |
34 | prenl=0 | |
35 | breakw=0 | |
36 | line="" | |
37 | } | |
38 | ||
39 | function wtail() { | |
40 | retval="" | |
41 | while(w<nwords) { | |
42 | if(length(retval)) | |
43 | retval=retval OFS | |
44 | retval=retval words[++w] | |
45 | } | |
46 | return retval | |
47 | } | |
48 | ||
49 | function add(str) { | |
50 | for(;prenl;prenl--) | |
51 | line=line "\n" | |
52 | line=line str | |
53 | } | |
54 | ||
55 | ! /^\./ { | |
56 | for(;prenl;prenl--) | |
57 | print "" | |
58 | ||
59 | if(literal) | |
60 | print ".br" | |
61 | next | |
62 | } | |
63 | ||
64 | /^\.\\"/ { next } | |
65 | ||
66 | { | |
67 | option=0 | |
68 | parens=0 | |
69 | angles=0 | |
70 | sub("^\\.","") | |
71 | nwords=split($0,words) | |
72 | for(w=1;w<=nwords;w++) { | |
73 | skip=0 | |
74 | if(match(words[w],"^Li|Pf$")) { | |
75 | skip=1 | |
76 | } else if(match(words[w],"^Xo$")) { | |
77 | skip=1 | |
78 | ext=1 | |
79 | if(length(line)&&!(match(line," $")||prenl)) | |
80 | add(OFS) | |
81 | } else if(match(words[w],"^Xc$")) { | |
82 | skip=1 | |
83 | ext=0 | |
84 | if(!extopt) | |
85 | prenl++ | |
86 | w=nwords | |
87 | } else if(match(words[w],"^Bd$")) { | |
88 | skip=1 | |
89 | if(match(words[w+1],"-literal")) { | |
90 | literal=1 | |
91 | prenl++ | |
92 | w=nwords | |
93 | } | |
94 | } else if(match(words[w],"^Ed$")) { | |
95 | skip=1 | |
96 | literal=0 | |
97 | } else if(match(words[w],"^Ns$")) { | |
98 | skip=1 | |
99 | if(!nospace) | |
100 | nospace=1 | |
101 | sub(" $","",line) | |
102 | } else if(match(words[w],"^No$")) { | |
103 | skip=1 | |
104 | sub(" $","",line) | |
105 | add(words[++w]) | |
106 | } else if(match(words[w],"^Dq$")) { | |
107 | skip=1 | |
108 | add("``") | |
109 | add(words[++w]) | |
110 | while(w<nwords&&!match(words[w+1],"^[\\.,]")) | |
111 | add(OFS words[++w]) | |
112 | add("''") | |
113 | if(!nospace&&match(words[w+1],"^[\\.,]")) | |
114 | nospace=1 | |
115 | } else if(match(words[w],"^Sq|Ql$")) { | |
116 | skip=1 | |
117 | add("`" words[++w] "'") | |
118 | if(!nospace&&match(words[w+1],"^[\\.,]")) | |
119 | nospace=1 | |
120 | } else if(match(words[w],"^Oo$")) { | |
121 | skip=1 | |
122 | extopt=1 | |
123 | if(!nospace) | |
124 | nospace=1 | |
125 | add("[") | |
126 | } else if(match(words[w],"^Oc$")) { | |
127 | skip=1 | |
128 | extopt=0 | |
129 | add("]") | |
130 | } | |
131 | if(!skip) { | |
132 | if(!nospace&&length(line)&&!(match(line," $")||prenl)) | |
133 | add(OFS) | |
134 | if(nospace==1) | |
135 | nospace=0 | |
136 | } | |
137 | if(match(words[w],"^Dd$")) { | |
138 | date=wtail() | |
139 | next | |
140 | } else if(match(words[w],"^Dt$")) { | |
141 | id=wtail() | |
142 | next | |
143 | } else if(match(words[w],"^Ox$")) { | |
144 | add("OpenBSD") | |
145 | skip=1 | |
146 | } else if(match(words[w],"^Os$")) { | |
147 | add(".TH " id " \"" date "\" \"" wtail() "\"") | |
148 | } else if(match(words[w],"^Sh$")) { | |
149 | add(".SH") | |
150 | synopsis=match(words[w+1],"SYNOPSIS") | |
151 | } else if(match(words[w],"^Xr$")) { | |
152 | add("\\fB" words[++w] "\\fP(" words[++w] ")" words[++w]) | |
153 | } else if(match(words[w],"^Rs$")) { | |
154 | split("",refauthors) | |
155 | nrefauthors=0 | |
156 | reftitle="" | |
157 | refissue="" | |
158 | refdate="" | |
159 | refopt="" | |
160 | reference=1 | |
161 | next | |
162 | } else if(match(words[w],"^Re$")) { | |
163 | prenl++ | |
164 | for(i=nrefauthors-1;i>0;i--) { | |
165 | add(refauthors[i]) | |
166 | if(i>1) | |
167 | add(", ") | |
168 | } | |
169 | if(nrefauthors>1) | |
170 | add(" and ") | |
171 | add(refauthors[0] ", \\fI" reftitle "\\fP") | |
172 | if(length(refissue)) | |
173 | add(", " refissue) | |
174 | if(length(refdate)) | |
175 | add(", " refdate) | |
176 | if(length(refopt)) | |
177 | add(", " refopt) | |
178 | add(".") | |
179 | reference=0 | |
180 | } else if(reference) { | |
181 | if(match(words[w],"^%A$")) { refauthors[nrefauthors++]=wtail() } | |
182 | if(match(words[w],"^%T$")) { | |
183 | reftitle=wtail() | |
184 | sub("^\"","",reftitle) | |
185 | sub("\"$","",reftitle) | |
186 | } | |
187 | if(match(words[w],"^%N$")) { refissue=wtail() } | |
188 | if(match(words[w],"^%D$")) { refdate=wtail() } | |
189 | if(match(words[w],"^%O$")) { refopt=wtail() } | |
190 | } else if(match(words[w],"^Nm$")) { | |
191 | if(synopsis) { | |
192 | add(".br") | |
193 | prenl++ | |
194 | } | |
195 | n=words[++w] | |
196 | if(!length(name)) | |
197 | name=n | |
198 | if(!length(n)) | |
199 | n=name | |
200 | add("\\fB" n "\\fP") | |
201 | if(!nospace&&match(words[w+1],"^[\\.,]")) | |
202 | nospace=1 | |
203 | } else if(match(words[w],"^Nd$")) { | |
204 | add("\\- " wtail()) | |
205 | } else if(match(words[w],"^Fl$")) { | |
206 | add("\\fB\\-" words[++w] "\\fP") | |
207 | if(!nospace&&match(words[w+1],"^[\\.,]")) | |
208 | nospace=1 | |
209 | } else if(match(words[w],"^Ar$")) { | |
210 | add("\\fI") | |
211 | if(w==nwords) | |
212 | add("file ...\\fP") | |
213 | else { | |
214 | add(words[++w] "\\fP") | |
215 | while(match(words[w+1],"^\\|$")) | |
216 | add(OFS words[++w] " \\fI" words[++w] "\\fP") | |
217 | } | |
218 | if(!nospace&&match(words[w+1],"^[\\.,]")) | |
219 | nospace=1 | |
220 | } else if(match(words[w],"^Cm$")) { | |
221 | add("\\fB" words[++w] "\\fP") | |
222 | while(w<nwords&&match(words[w+1],"^[\\.,:;)]")) | |
223 | add(words[++w]) | |
224 | } else if(match(words[w],"^Op$")) { | |
225 | option=1 | |
226 | if(!nospace) | |
227 | nospace=1 | |
228 | add("[") | |
229 | } else if(match(words[w],"^Pp$")) { | |
230 | prenl++ | |
231 | } else if(match(words[w],"^An$")) { | |
232 | prenl++ | |
233 | } else if(match(words[w],"^Ss$")) { | |
234 | add(".SS") | |
235 | } else if(match(words[w],"^Pa$")&&!option) { | |
236 | add("\\fI") | |
237 | w++ | |
238 | if(match(words[w],"^\\.")) | |
239 | add("\\&") | |
240 | add(words[w] "\\fP") | |
241 | while(w<nwords&&match(words[w+1],"^[\\.,:;)]")) | |
242 | add(words[++w]) | |
243 | } else if(match(words[w],"^Dv$")) { | |
244 | add(".BR") | |
245 | } else if(match(words[w],"^Em|Ev$")) { | |
246 | add(".IR") | |
247 | } else if(match(words[w],"^Pq$")) { | |
248 | add("(") | |
249 | nospace=1 | |
250 | parens=1 | |
251 | } else if(match(words[w],"^Aq$")) { | |
252 | add("<") | |
253 | nospace=1 | |
254 | angles=1 | |
255 | } else if(match(words[w],"^S[xy]$")) { | |
256 | add(".B " wtail()) | |
257 | } else if(match(words[w],"^Ic$")) { | |
258 | plain=1 | |
259 | add("\\fB") | |
260 | while(w<nwords) { | |
261 | w++ | |
262 | if(match(words[w],"^Op$")) { | |
263 | w++ | |
264 | add("[") | |
265 | words[nwords]=words[nwords] "]" | |
266 | } | |
267 | if(match(words[w],"^Ar$")) { | |
268 | add("\\fI" words[++w] "\\fP") | |
269 | } else if(match(words[w],"^[\\.,]")) { | |
270 | sub(" $","",line) | |
271 | if(plain) { | |
272 | add("\\fP") | |
273 | plain=0 | |
274 | } | |
275 | add(words[w]) | |
276 | } else { | |
277 | if(!plain) { | |
278 | add("\\fB") | |
279 | plain=1 | |
280 | } | |
281 | add(words[w]) | |
282 | } | |
283 | if(!nospace) | |
284 | add(OFS) | |
285 | } | |
286 | sub(" $","",line) | |
287 | if(plain) | |
288 | add("\\fP") | |
289 | } else if(match(words[w],"^Bl$")) { | |
290 | oldoptlist=optlist | |
291 | if(match(words[w+1],"-bullet")) | |
292 | optlist=1 | |
293 | else if(match(words[w+1],"-enum")) { | |
294 | optlist=2 | |
295 | enum=0 | |
296 | } else if(match(words[w+1],"-tag")) | |
297 | optlist=3 | |
298 | else if(match(words[w+1],"-item")) | |
299 | optlist=4 | |
300 | else if(match(words[w+1],"-bullet")) | |
301 | optlist=1 | |
302 | w=nwords | |
303 | } else if(match(words[w],"^El$")) { | |
304 | optlist=oldoptlist | |
305 | } else if(match(words[w],"^Bk$")) { | |
306 | if(match(words[w+1],"-words")) { | |
307 | w++ | |
308 | breakw=1 | |
309 | } | |
310 | } else if(match(words[w],"^Ek$")) { | |
311 | breakw=0 | |
312 | } else if(match(words[w],"^It$")&&optlist) { | |
313 | if(optlist==1) | |
314 | add(".IP \\(bu") | |
315 | else if(optlist==2) | |
316 | add(".IP " ++enum ".") | |
317 | else if(optlist==3) { | |
318 | add(".TP") | |
319 | prenl++ | |
320 | if(match(words[w+1],"^Pa$|^Ev$")) { | |
321 | add(".B") | |
322 | w++ | |
323 | } | |
324 | } else if(optlist==4) | |
325 | add(".IP") | |
326 | } else if(match(words[w],"^Sm$")) { | |
327 | if(match(words[w+1],"off")) | |
328 | nospace=2 | |
329 | else if(match(words[w+1],"on")) | |
330 | nospace=0 | |
331 | w++ | |
332 | } else if(!skip) { | |
333 | add(words[w]) | |
334 | } | |
335 | } | |
336 | if(match(line,"^\\.[^a-zA-Z]")) | |
337 | sub("^\\.","",line) | |
338 | if(parens) | |
339 | add(")") | |
340 | if(angles) | |
341 | add(">") | |
342 | if(option) | |
343 | add("]") | |
344 | if(ext&&!extopt&&!match(line," $")) | |
345 | add(OFS) | |
346 | if(!ext&&!extopt&&length(line)) { | |
347 | print line | |
348 | prenl=0 | |
349 | line="" | |
350 | } | |
351 | } |