.\"	$NetBSD: macros,v 1.18 2002/04/14 13:12:37 bjh21 Exp $
.\"
.\" Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Ross Harvey.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"        This product includes software developed by the NetBSD
.\"        Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\"    contributors may be used to endorse or promote products derived
.\"    from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.\"	--------------------  MACROS  --------------------
.
.
.\" Define a .CURDIR-relative include, with entertainment
.
.rn so so-real
.de so
.	tm ...reading \\$1
.	Pp
.	so-real \*[.CURDIR]/\\$1
.\"	tm ...back to INSTALL
..
.als source so
.
.\" -mdoc only has only two section levels (Sh & Ss)
.
.\" second-level subsection macro (third-level section)
.
.de Ss2
.	ie rHTML <h5><a name="\\$*">\\$*</a></h5>
.	el \{\
.		br
.		if t .ne 7P
.		Pp
.		Em "\\$*"
.		Pp
.	\}
..
.
.
.\" Standard indented literal display, with nice showmatch parens in the name.
.\" Be warned that using font change macros such as `Ic', `Em' and `Sy' inside
.\" may cause formatting problems further on; this is probably a bug in the
.\" mdoc macros...
.
.de (disp
.	Bd -literal -offset indent
..
.
.de disp)
.	Ed
..
.
.
.de br_ne
.	br
.	if t .ne \\$1
..
.
.
.
.\" Tagged lists:
.\"	(tag wid rest	Creates a tag with width wid and other args rest
.\"	tag)		End sequence
.\"
.
.de (tag
.	Bl -tag -width \\$*
..
.
.de tag)
.	El
..
.
.de (Note
.	(tag Note:
.	It Em Note:
..
.
.de Note)
.	tag)
..
.
.\" Bullet list, which swaps between bullet and hyphen at each alternate
.\" indent level.
.
.nr b_or_h 1
.
.de (bullet
.	ie \\n[b_or_h] .Bl -bullet \\$*
.	el .Bl -hyphen \\$*
.	nr b_or_h 1-\\n[b_or_h]
.	It
..
.
.de bullet)
.	El
.	nr b_or_h 1-\\n[b_or_h]
..
.
.\" Enumerated list
.\"
.
.de (enum
.	Bl -enum \\$*
.	It
..
.
.de enum)
.	El
..
.
.\" Item list
.\"
.
.de (item
.	Bl -item \\$*
.	It
..
.
.de item)
.	El
..
.
.\" Generate NetBSD/${MACHINE}, with NetBSD being done with .Nx.
.\" If there's trailing args to the macro, concatenate with no space.
.
.de Nx*M
.ie \\n[.$]>0 .Nx Ns / Ns \*M Ns \\$*
.el .Nx Ns / Ns \*M
..
.
.\" Key-cap; literal text one point size smaller
.
.de Key
.ps -1
.Li \\$*
.ps +1
..
.
.
.\" Macro for `UNIX-like', since we don't want to just use `UNIX'
.
.de Ul
.Ux -like
..
.
.\" .Bc/.Ec; begin/end two-column mode. This may not work in all
.\" cases, but was designed for common/donations. There is no
.\" support for more than two pages, nor for right-margins.
.\" Usage:
.\"   .Bc [ncol]
.\" Dependancies:
.\"  macro CF   page trap macro for bottom of column
.\"  macro CZ   code duplication; handling of diversion interpolation.
.\"  macro CC   diversion trap macro for subdividing into pages.
.\"  macro Bc   Begin columns
.\"  macro Ec   End columns
.\"  reg cl     current column number
.\"  reg CI     saved indent
.\"  reg CL	saved line-length
.\"  reg CO     saved page offset
.\"  reg CN     number of columns
.\"  reg CA     max height of columnized text
.\"  reg CB     save available space on page
.\"  reg CE     column spacing
.\"  str C0     entire columnization region [if crosses page boundary]
.\"  str C1     columnization region for page 1
.\"  str C2     columnization region for page 2
.
.de CF
.if \\n(Db .tm page trap (column bottom) at \\n(nlu.
.\"TRAP2		\" debugging: here's where the trap is.
.ie \\n+(cl<\\n(CN \{
.rt		\" return to the mk
.po +\\n(CEu		\" space to next column
.ns
\}
.el \{\
.ll \\n(CLu	\" restore linelength
.in \\n(CIu	\" restore indent
.po \\n(COu	\" restore offset
.\}
..
.de CZ
.mk		\" Save position
.if \\n(Db .tm Saved column top is \\n(nlu.
.nr cl 0 1	\" This is column #0
.nr CL \\n(.l	\" Save the linelength
.nr CI \\n(.i	\" Save the indent
.nr CO \\n(.o	\" Save the offset
.nf
.\" .ll 20n	\" this doesn't work in nf-mode.
.if \\n(Db .tm Page trap placed at \\n(CDu; next trap at \\n(nlu+\n(.tu.
.wh \\n(CDu CF			\" set the bottom of column trap
.if \\n(Db .tm CZ: \\$1 starts at \\n(nlu; trap in \\n(.tu.
.\\$1				\" throw in the diverted text
.if \\n(Db .tm CZ: \\$1 ends at \\n(nlu; trap in \\n(.tu.
.if !\\n(CN==\\n(cl .sp		\" If we didn't finish, space to force a trap.
.ch CF                          \" remove trap
.if \\n(Db .tm CZ: before .ne we are at \\n(nlu with \\n(.tu to go.
.ne 3V				\" space for two lines after
.if \\n(Db .tm CZ: after .ne we are at \\n(nlu.
..
.de CC
.if \\n(Db .tm diversion trap (page break) at \\n(nlu.
.\"TRAP1	\" debugging
.di            \" close first-page (C1) diversion
.di C2         \" open second-page (C2) diversion 
..
.de Bc
.in +\n(Dsu	\" Indent to match Bd
.nr CN 2		\" Number of columns
.if !"\\$1"" .nr CN \\$1
.ne 2v	\" we need at least two lines of space on the page.
.ev 2
.di C1	\" divert the text
.nf
..
.de Ec
.di	\" end diversion
.ev
.nr CA \\n(dnu/\\n(CN	\" save max height of columnized text
.nr CB \\n(.t-(\\n(.v*3)	\" save available space on page
.nr CE \\n(.lu/\\n(CN
.\" .tm The diversion is \\n(dnu high and \\n(dlu wide. At \\n(CN columns,
.\" .tm the max height would be \\n(CAu high, if they fit on the same page.
.\" .tm The page length is \\n(.p, and the current vposition is \\n(nl, not to
.\" .tm be confused with the page offset of \\n(.o.
.\" .tm So we have \\n(CBu of space on this page.
.ie \\n(CA>=\\n(CB \{
.rn C1 C0	\" put original in C0
.ev 2
.di C1		\" Divert the first page into new C1
.\" Diversion trap location in solid kludgite. If notCRT, we need 
.\" extra v-height. go figure.
.ie \\n(cR==0 .dt \\n(CBu*\\n(CNu+2v CC
.el .dt \\n(CBu*\\n(CNu CC
.C0
.di
.ev
.nf
.fi
.\" Trap at bottom of page
.if \\(Db .tm page trap set at \\n(nlu+\\n(.tu-2v)
.nr CD \\n(nlu+\\n(.tu-2v)	\" trap right before next trap
.\}
.el \{\
.\" Trap at the bottom of the text. All on one page.
.nr CD \\n(CAu+\\n(nlu
.\}
.CZ C1
.\" The .if dxxx construct is groff-specific
.if dC2 \{
.if \\(Db .tm max height of text is \\n(dnu/\\n(CN.
.if \\(Db .tm breakpoint (for page trap) is 1u+\\n(CAu+\\n(nlu.
.nr CA \\n(dnu/\\n(CN		\" save max height of columnized text
.nr CD \\n(CAu+\\n(nlu
.CZ C2
.\}
.rm C2	\" nuke it otherwise it might pop up later.
.\"	These should already be restored. But sometimes we don't hit
.\"	the last page trap [??]
.ll \\n(CLu	\" restore linelength
.in \\n(CIu	\" restore indent
.po \\n(COu	\" restore offset
.fi                             \" fill again.
.in -\n(Dsu	\" revert prior indent
..
.\" Unfortunately, none of the above works with -mdoc2html; so we'll
.\" just replace columns with a regular Bd -unfilled -offset indent.
.if rHTML \{
.rm Bc
.rm Ec
.de Bc
.Bd -unfilled -offset indent
..
.als Ec Ed
.\}
.
.\" Macros to support Table of Contents
.\" TOC is set (from the command line) if we're generating the TOC file;
.\" the TOC file is read from groff's stderr.
.\" Usage:
.\"   .Sh  			section header
.\"   .Ss			subsection header
.\"   .Ss2			sub2section header
.\"   .Te depth "item"		Explicit toc entry, not based on other markup
.\"   .To depth "item"		Like Te, but don't echo the item
.\" XXX To should be unnecessary if we handle parseable/callable.
.\"   .Tc			import the TOC
.\"   .Ti depth page "item"	(internal) output an entry
.if dTOC \{
.rn Ss Ss-toc
.de Ss
.Ss-toc \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
\.tm .Ti 0 \\n% \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.rn Ss2 Ss2-toc
.de Ss2
.Ss2-toc \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
\.tm .Ti 1 \\n% \\$1 \\$2 \\$3 \\$4 \\$5 \\$6 \\$7 \\$8 \\$9
..
.\}
.de Te
.ie rHTML <a name="\\$2">\\$2</a>
.el \\$2
.if dTOC \.tm .Ti \\$1 \\n% \\$2
..
.de To
.if rHTML <a name="\\$2"></a>
.if dTOC \.tm .Ti \\$1 \\n% \\$2
..
.de Ti
.ie rHTML \{.ta (\n(.lu+\w'<a href="#\\$3"></a>'u)R
\h'3n*\\$1u' <a href="#\\$3">\\$3</a>\a\\$2
.\}
.el \h'3n*\\$1u' \\$3\a\\$2
..
.de Tc
.Bd -literal
.ta (\n(.lu)R
\.tm ...reading INSTALL.\*[format].toc
.       Pp
.\" Use so-real here becuase otherwise we lose on objdirs
\.so-real INSTALL.\*[format].toc
.Ed
..
.
.
.\"	--------------------  MISC  --------------------
.
.\" set the unused target number registers to 0, so that we can turn on all
.\" the warnings but still do things like .if \n[amiga]:\n[alpha] \&stuff
.\" (The Makefile defines the target as 1, leaving the others undefined.)
.
.de define_all
.	while \\n[.$] \{\
.		if !r\\$1 .nr \\$1 0
.		shift
.	\}
..
.
.define_all \*[MACHINE_LIST]
.
.\" Supported CPUs:
.\"	alpha arm i386 m68k mips pc532 powerpc sh3 sparc sparc64 vax
.\" Define registers for MACHINE_ARCHs with multiple MACHINEs
.
.ds A \*M
.if \n[acorn26]:\n[acorn32]:\n[cats]:\n[evbarm]:\n[hpcarm]:\n[netwinder]:\n[shark] .ds A arm
.if \n[amiga]:\n[atari]:\n[hp300]:\n[luna68k]:\n[mac68k]:\n[mvme68k]:\n[news68k]:\n[next68k]:\n[sun3]:\n[x68k] .ds A m68k
.if \n[arc]:\n[cobalt]:\n[hpcmips]:\n[newsmips]:\n[pmax]:\n[sgimips] .ds A mips
.if \n[amigappc]:\n[bebox]:\n[macppc]:\n[ofppc]:\n[prep] .ds A powerpc
.if \n[evbsh3]:\n[mmeye] .ds A sh3
.if !r\*A .nr \*A 1
.
.
.\" Define _ versions, sometimes these look better as with .if r_xxx
.
.nr _\*M 1
.nr _\*A 1
.
.\" Other strings available:
.\"
.\"	\*M		${MACHINE} (e.g., `i386')
.\"	\*A		${MACHINE_ARCH} (e.g., `m68k')
.\"	\*V		Version (e.g., `1.5')
.\"	\*[.CURDIR]	${.CURDIR}