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-rw-r--r--mdoc2man.awk370
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+#!/usr/bin/awk
+#
+# $Id: mdoc2man.awk,v 1.9 2009/10/24 00:52:42 dtucker Exp $
+#
+# Version history:
+# v4+ Adapted for OpenSSH Portable (see cvs Id and history)
+# v3, I put the program under a proper license
+# Dan Nelson <dnelson@allantgroup.com> added .An, .Aq and fixed a typo
+# v2, fixed to work on GNU awk --posix and MacOS X
+# v1, first attempt, didn't work on MacOS X
+#
+# Copyright (c) 2003 Peter Stuge <stuge-mdoc2man@cdy.org>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+
+BEGIN {
+ optlist=0
+ oldoptlist=0
+ nospace=0
+ synopsis=0
+ reference=0
+ block=0
+ ext=0
+ extopt=0
+ literal=0
+ prenl=0
+ breakw=0
+ line=""
+}
+
+function wtail() {
+ retval=""
+ while(w<nwords) {
+ if(length(retval))
+ retval=retval OFS
+ retval=retval words[++w]
+ }
+ return retval
+}
+
+function add(str) {
+ for(;prenl;prenl--)
+ line=line "\n"
+ line=line str
+}
+
+! /^\./ {
+ for(;prenl;prenl--)
+ print ""
+ print
+ if(literal)
+ print ".br"
+ next
+}
+
+/^\.\\"/ { next }
+
+{
+ option=0
+ parens=0
+ angles=0
+ sub("^\\.","")
+ nwords=split($0,words)
+ for(w=1;w<=nwords;w++) {
+ skip=0
+ if(match(words[w],"^Li|Pf$")) {
+ skip=1
+ } else if(match(words[w],"^Xo$")) {
+ skip=1
+ ext=1
+ if(length(line)&&!(match(line," $")||prenl))
+ add(OFS)
+ } else if(match(words[w],"^Xc$")) {
+ skip=1
+ ext=0
+ if(!extopt)
+ prenl++
+ w=nwords
+ } else if(match(words[w],"^Bd$")) {
+ skip=1
+ if(match(words[w+1],"-literal")) {
+ literal=1
+ prenl++
+ w=nwords
+ }
+ } else if(match(words[w],"^Ed$")) {
+ skip=1
+ literal=0
+ } else if(match(words[w],"^Ns$")) {
+ skip=1
+ if(!nospace)
+ nospace=1
+ sub(" $","",line)
+ } else if(match(words[w],"^No$")) {
+ skip=1
+ sub(" $","",line)
+ add(words[++w])
+ } else if(match(words[w],"^Dq$")) {
+ skip=1
+ add("``")
+ add(words[++w])
+ while(w<nwords&&!match(words[w+1],"^[\\.,]"))
+ add(OFS words[++w])
+ add("''")
+ if(!nospace&&match(words[w+1],"^[\\.,]"))
+ nospace=1
+ } else if(match(words[w],"^Sq|Ql$")) {
+ skip=1
+ add("`" words[++w] "'")
+ if(!nospace&&match(words[w+1],"^[\\.,]"))
+ nospace=1
+ } else if(match(words[w],"^Oo$")) {
+ skip=1
+ extopt=1
+ if(!nospace)
+ nospace=1
+ add("[")
+ } else if(match(words[w],"^Oc$")) {
+ skip=1
+ extopt=0
+ add("]")
+ }
+ if(!skip) {
+ if(!nospace&&length(line)&&!(match(line," $")||prenl))
+ add(OFS)
+ if(nospace==1)
+ nospace=0
+ }
+ if(match(words[w],"^Dd$")) {
+ if(match(words[w+1],"^\\$Mdocdate:")) {
+ w++;
+ if(match(words[w+4],"^\\$$")) {
+ words[w+4] = ""
+ }
+ }
+ date=wtail()
+ next
+ } else if(match(words[w],"^Dt$")) {
+ id=wtail()
+ next
+ } else if(match(words[w],"^Ux$")) {
+ add("UNIX")
+ skip=1
+ } else if(match(words[w],"^Ox$")) {
+ add("OpenBSD")
+ skip=1
+ } else if(match(words[w],"^Os$")) {
+ add(".TH " id " \"" date "\" \"" wtail() "\"")
+ } else if(match(words[w],"^Sh$")) {
+ add(".SH")
+ synopsis=match(words[w+1],"SYNOPSIS")
+ } else if(match(words[w],"^Xr$")) {
+ add("\\fB" words[++w] "\\fP(" words[++w] ")" words[++w])
+ } else if(match(words[w],"^Rs$")) {
+ split("",refauthors)
+ nrefauthors=0
+ reftitle=""
+ refissue=""
+ refdate=""
+ refopt=""
+ refreport=""
+ reference=1
+ next
+ } else if(match(words[w],"^Re$")) {
+ prenl++
+ for(i=nrefauthors-1;i>0;i--) {
+ add(refauthors[i])
+ if(i>1)
+ add(", ")
+ }
+ if(nrefauthors>1)
+ add(" and ")
+ if(nrefauthors>0)
+ add(refauthors[0] ", ")
+ add("\\fI" reftitle "\\fP")
+ if(length(refissue))
+ add(", " refissue)
+ if(length(refreport)) {
+ add(", " refreport)
+ }
+ if(length(refdate))
+ add(", " refdate)
+ if(length(refopt))
+ add(", " refopt)
+ add(".")
+ reference=0
+ } else if(reference) {
+ if(match(words[w],"^%A$")) { refauthors[nrefauthors++]=wtail() }
+ if(match(words[w],"^%T$")) {
+ reftitle=wtail()
+ sub("^\"","",reftitle)
+ sub("\"$","",reftitle)
+ }
+ if(match(words[w],"^%N$")) { refissue=wtail() }
+ if(match(words[w],"^%D$")) { refdate=wtail() }
+ if(match(words[w],"^%O$")) { refopt=wtail() }
+ if(match(words[w],"^%R$")) { refreport=wtail() }
+ } else if(match(words[w],"^Nm$")) {
+ if(synopsis) {
+ add(".br")
+ prenl++
+ }
+ n=words[++w]
+ if(!length(name))
+ name=n
+ if(!length(n))
+ n=name
+ add("\\fB" n "\\fP")
+ if(!nospace&&match(words[w+1],"^[\\.,]"))
+ nospace=1
+ } else if(match(words[w],"^Nd$")) {
+ add("\\- " wtail())
+ } else if(match(words[w],"^Fl$")) {
+ add("\\fB\\-" words[++w] "\\fP")
+ if(!nospace&&match(words[w+1],"^[\\.,]"))
+ nospace=1
+ } else if(match(words[w],"^Ar$")) {
+ add("\\fI")
+ if(w==nwords)
+ add("file ...\\fP")
+ else {
+ add(words[++w] "\\fP")
+ while(match(words[w+1],"^\\|$"))
+ add(OFS words[++w] " \\fI" words[++w] "\\fP")
+ }
+ if(!nospace&&match(words[w+1],"^[\\.,]"))
+ nospace=1
+ } else if(match(words[w],"^Cm$")) {
+ add("\\fB" words[++w] "\\fP")
+ while(w<nwords&&match(words[w+1],"^[\\.,:;)]"))
+ add(words[++w])
+ } else if(match(words[w],"^Op$")) {
+ option=1
+ if(!nospace)
+ nospace=1
+ add("[")
+ } else if(match(words[w],"^Pp$")) {
+ prenl++
+ } else if(match(words[w],"^An$")) {
+ prenl++
+ } else if(match(words[w],"^Ss$")) {
+ add(".SS")
+ } else if(match(words[w],"^Pa$")&&!option) {
+ add("\\fI")
+ w++
+ if(match(words[w],"^\\."))
+ add("\\&")
+ add(words[w] "\\fP")
+ while(w<nwords&&match(words[w+1],"^[\\.,:;)]"))
+ add(words[++w])
+ } else if(match(words[w],"^Dv$")) {
+ add(".BR")
+ } else if(match(words[w],"^Em|Ev$")) {
+ add(".IR")
+ } else if(match(words[w],"^Pq$")) {
+ add("(")
+ nospace=1
+ parens=1
+ } else if(match(words[w],"^Aq$")) {
+ add("<")
+ nospace=1
+ angles=1
+ } else if(match(words[w],"^S[xy]$")) {
+ add(".B " wtail())
+ } else if(match(words[w],"^Ic$")) {
+ plain=1
+ add("\\fB")
+ while(w<nwords) {
+ w++
+ if(match(words[w],"^Op$")) {
+ w++
+ add("[")
+ words[nwords]=words[nwords] "]"
+ }
+ if(match(words[w],"^Ar$")) {
+ add("\\fI" words[++w] "\\fP")
+ } else if(match(words[w],"^[\\.,]")) {
+ sub(" $","",line)
+ if(plain) {
+ add("\\fP")
+ plain=0
+ }
+ add(words[w])
+ } else {
+ if(!plain) {
+ add("\\fB")
+ plain=1
+ }
+ add(words[w])
+ }
+ if(!nospace)
+ add(OFS)
+ }
+ sub(" $","",line)
+ if(plain)
+ add("\\fP")
+ } else if(match(words[w],"^Bl$")) {
+ oldoptlist=optlist
+ if(match(words[w+1],"-bullet"))
+ optlist=1
+ else if(match(words[w+1],"-enum")) {
+ optlist=2
+ enum=0
+ } else if(match(words[w+1],"-tag"))
+ optlist=3
+ else if(match(words[w+1],"-item"))
+ optlist=4
+ else if(match(words[w+1],"-bullet"))
+ optlist=1
+ w=nwords
+ } else if(match(words[w],"^El$")) {
+ optlist=oldoptlist
+ } else if(match(words[w],"^Bk$")) {
+ if(match(words[w+1],"-words")) {
+ w++
+ breakw=1
+ }
+ } else if(match(words[w],"^Ek$")) {
+ breakw=0
+ } else if(match(words[w],"^It$")&&optlist) {
+ if(optlist==1)
+ add(".IP \\(bu")
+ else if(optlist==2)
+ add(".IP " ++enum ".")
+ else if(optlist==3) {
+ add(".TP")
+ prenl++
+ if(match(words[w+1],"^Pa$|^Ev$")) {
+ add(".B")
+ w++
+ }
+ } else if(optlist==4)
+ add(".IP")
+ } else if(match(words[w],"^Sm$")) {
+ if(match(words[w+1],"off"))
+ nospace=2
+ else if(match(words[w+1],"on"))
+ nospace=0
+ w++
+ } else if(!skip) {
+ add(words[w])
+ }
+ }
+ if(match(line,"^\\.[^a-zA-Z]"))
+ sub("^\\.","",line)
+ if(parens)
+ add(")")
+ if(angles)
+ add(">")
+ if(option)
+ add("]")
+ if(ext&&!extopt&&!match(line," $"))
+ add(OFS)
+ if(!ext&&!extopt&&length(line)) {
+ print line
+ prenl=0
+ line=""
+ }
+}