doc/src/txt.im

.if false
==================================================================================
	Copyright (c) 2019 Nokia
	Copyright (c) 2018-2019 AT&T Intellectual Property.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================================
.fi

.if false
	Mnemonic:	txt.im
	Abstract:	To generate raw ASCII we just need to 'disable' the macros which
				are defined to support things like troff, markdown and rts.
				For each of those macros, we just map to real {X}fm commandd
				which do the right thing when generating real .txt output.

	Author:		E. Scott Daniels
	Date:		29 July 2019

.fi


.cd 1 6.5i i=0
.in .25i

.** paragraph headers
.dv h1 .h1 $1
.dv h2 .h2 $1
.dv h3 .h3 $1
.dv h4 .h4 $1

.dh 1 s=2,1 i=.25i m=.25i
.dh 2 s=1,1 i=.25i m=.25i
.dh 3 s=1,0 i=.25i m=.25i
.hn off

.dv fig .fi t=figure
.dv set_font_cw

.dv nf  .sp 1 ^:^: .br .ll -2 .in +2
.dv fo  .in -2 .ll +2 .sp 1

.dv indent .ll -.25i .in +.25i
.dv uindent .in -.25i .ll +.25i

.dv lic1 *
.dv lic2 +
.dv lic3 -

.dv esc : .** rst needs an escape for some things

.dv line_len .ll $1
.dv break .br
.dv space .sp 1
.dv mult_space .sp $1
.dv half_space .sp 1
.dv beg_list .bl $1
.dv end_list .el
.dv li .li
.dv item .li

.dv beg_dlist .sp 1 .bd $1
.dv end_dlist .ed

.dv center .ce $1 ^:
.dv center_start .bc start
.dv center_end	.bc end

.dv item .li
.dv ditem  .sp 1 .di $1 ^:
.dv ditem_nosp  .di $1 ^:

.** for now we allow only a single layer of defitems
.dv di .sp 1 .di $1 ^:
.dv diitem  .sp 1 .di $1 ^:

.dv ex_start .sp 1 .ll -2 .in +2 .nf
.dv ex_end .fo on .in -2 .ll +2 .sp 1
.dv ex_end_fig .fo on .in -2 .ll +2 .fg $1 ^: .sp 1
.dv ex_end_cfig .fo on .in -2 .ll +2 .fg x=center $1 ^: .sp 1

.dv proto_start .sp 1 .cc .5i .st 9 .sf Courier-bold .nf
.dv proto_end .fo on .sf ^&text_font .st ^&text_size .sp .3

.** fonts and font macros
.dv ital $1
.dv bold $1
.dv cw $1
.dv set_font_prop

.dv table .sp 1 ^[table not supported in plain txt output]  .if false
.dv tab_cell
.dv tab_row
.dv end_table .fi

.dv super .sm ^[ .sm ^&{ss_num}]
.dv ss_num 1
.dv note .dv ss_num ^[ ?%.0f ^&ss_num 1 + ] ^: .sm ^^[^&{ss_num}]
.** pure ascii out has no concept of a page, so all notes go to the close of the doc
.dv atbot atclose
.ju on