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.ig
hdmisc.tmac
This file is part of groff, the GNU roff type-setting system.
Copyright (C) 2005-2020 Free Software Foundation, Inc.
written by Joachim Walsdorff <Joachim.Walsdorff@urz.uni-heidelberg.de>.
groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or
(at your option) any later version.
groff is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
..
.
.
.if d t*getarg \
. nx
.
.
.\" ******************************************************************
.\" ** Some macros and default settings needed by hdtbl **
.\" ******************************************************************
.
.
.\" Utility macro: .getarg <key> ...
.\"
.\" Get macro argument. This macro searches <key> in the
.\" remaining arguments and assigns its value to a string
.\" register named <key>. The following syntax forms are
.\" recognized.
.\"
.\" <key>=<val> Assign <val> to string <key>.
.\" <val> must not contain spaces.
.\" <key>='<val>' Assign <val> to string <key>.
.\" <val> can contain spaces.
.\" <key>= Assign '=' to string <key>.
.\" <key> Assign 'key' to string <key>.
.\"
.\" After return, the string 'args' contains the remaining
.\" arguments.
.\"
.\" Example: With the definition of string 'foo' as
.\"
.\" .ds foo aaa=xxx bbb ccc='yyy zzz' ddd= eee
.\"
.\" a call to 'getarg' with
.\"
.\" .getarg ccc \*[foo]
.\"
.\" sets string 'ccc' to value 'yyy zzz'. The string 'args'
.\" now contains 'aaa=xxx bbb ddd= eee'. An additional call
.\" like
.\"
.\" .getarg ddd \*[args]
.\"
.\" sets string 'ddd' to value '=', and 'args' contains
.\" 'aaa=xxx bbb eee'.
.de t*getarg
. ds \\$1
. ds args
.
. if (\\n[.$] < 2) \
. return
.
. ds $1 \\$1\"
. shift
.
. length * \\*[$1]
. while \\n[.$] \{\
. ds * "\\$1\"
. ds ** "\\$1\"
. length ** \\*[**]
. shift
. if (\\n[*] > \\n[**]) \{\
. as args " "\\*[**]"\" value too short, repeat
. continue
. \}
. substring * 0 (\\n[*] - 1)
. \" The surrounding \? escapes emulate string comparison.
. ie !"\?\\*[$1]\?"\?\\*[*]\?" \{\
. as args " "\\*[**]"\" key not found, repeat
. continue
. \}
. el \{\
. ie "\?\\*[**]\?"\?\\*[$1]\?" \
. ds \\*[$1] \\*[$1]\" return key as string
. el \{\
. ie "\?\\*[**]\?"\?\\*[$1]=\?" \
. ds \\*[$1] =\" return '='
. el \{\
. substring ** (\\n[*] + 1) -1
. ds * \\*[**]\"
. substring * 0 0
.
. \" check whether value starts with quote
. if "\?\\*[*]\?"\?'\?" \{\
. substring ** 1 -1
. ds * \\*[**]\"
. substring * -1 -1
.
. \" search final quote
. ie "\?\\*[*]\?"\?'\?" \
. substring ** 0 -2
. el \{\
. as \\*[$1] \\*[**] \" not found, append argument
.
. while 1 \{\
. ds ** \\$1\" get next argument
. ds * \\$1\"
. shift
. substring * -1 -1
.
. if "\?\\*[*]\?"\?'\?" \{\
. substring ** 0 -2
. break \" break if no final quote
. \}
.
. as \\*[$1] \\*[**] \" otherwise append and repeat
. \}
. \}\}
.
. as \\*[$1] \\*[**]\"
. \}
.
. as args " \\$@\"
. \}\}
.
. return
. \}
..
.
.
.\" Utility macro: .index <string1> <string2>
.\"
.\" Check whether <string2> is a substring of <string1> and
.\" return its position in number register 't*index', starting
.\" with 1. If not found, return 0. If <string2> is empty,
.\" set 't*index' to -999.
.de t*index
. if "\\$2"" \{\
. nr t*index -999
. return
. \}
.
. length ** \\$1
. length $2 \\$2
. nr * 0-1 1
.
. while (\\n+[*] < \\n[**]) \{\
. ds * \\$1\"
. substring * \\n[*] (\\n[*] + \\n[$2] - 1)
. \" The surrounding \? escapes emulate string comparison.
. if "\?\\*[*]\?"\?\\$2\?" \
. break
. \}
.
. ie (\\n[*] == \\n[**]) \
. nr t*index 0
. el \
. nr t*index (\\n[*] + 1)
..
.
.
.\" ******************************************************************
.\" ******** non-accumulating space .t*SP [v] **********
.\" ** **
.\" ** nl vor erster Seite -1, oben auf Seite 0 resp. tH **
.\" ** .k nach .sp oder .br 0, **
.\" ** sonst Laenge der angefangenen Zeile **
.\" ** Der Merker M# fuer vorangegangenes .t*SP wird in .HM am **
.\" ** Seitenanfang zurueckgesetzt. **
.\" ** ganz richtig ist .sp + .br = .br + .sp = .sp **
.\" ******************************************************************
.de t*SP
. if (\\n[nl] < 0) \
. br \" start very first page
. nr * \\n[.p] \" save current page length
.
. ie "\\$1"" \
. pl +1 \" without arg increase page length by 1v
. el \
. pl +\\$1 \" otherwise use \\$1
.
. nr ** (\\n[.p] - \\n[*]) \" ** now holds arg for .t*SP in base units
. pl \\n[*]u \" restore page length
.
. \" we do nothing at start of new page or column
. if ((\\n[nl] - \\n[tH]) & (\\n[nl] - \\n[<<]) : \\n[.k]) \{\
. ie ((\\n[.d] - \\n[M#]) : \\n[.k]) \{\
. sp \\n[**]u \" execute .sp
. nr S# \\n[**] \" store ** in S#
. \}
. el \{\
. if (\\n[**] - \\n[S#]) \{\
. sp (\\n[**]u - \\n[S#]u)\" emit difference to previous .t*SP
. nr S# \\n[**] \" store ** in S#
. \}\}
.
. nr M# \\n[.d] \" store vertical position .d in M#
. \}
..
.
.
.\" ******************************************************************
.\" ** Perform all arguments once **
.\" ** P1 is nestable **
.\" ******************************************************************
.de t*P1
. \" 'while' command is about five times faster than recursion!
. while \\n[.$] \{\
. nop \\$1
. shift
. \}
..
.
.
.\" ******************************************************************
.\" ** Hilfsmakro zum Einstellen von Schriftgroesse und **
.\" ** Zeilenabstand, bezogen auf Anfangswerte \n[t*s] **
.\" ** und \n[t*v] sowie fuer Hyphenation: **
.\" ** .t*pv s v hy# hart; macht .br **
.\" ** Bei 4. Argument setzen der Register s und v und hy. **
.\" ** Fuer angefangene Zeile die vorgefundenen Einstellungen **
.\" ** **
.\" ** Auxiliary macro to set internal registers for font size **
.\" ** and line spacing, relative to initial values \n[t*s] and **
.\" ** \n[t*v]. Optionally sets hyphenation. A fourth argument **
.\" ** initializes internal registers to global default values. **
.\" ******************************************************************
.de t*pv
. br
.
. if \\n[.$] \
. ps (\\n[t*s]u * \\$1z / 1z)
.
. ie (\\n[.$] - 1) \
. vs (\\n[t*v]u * \\$2p / 1p)
. el \{\
. vs (\\n[t*v]u * \\$1p / 1p)
. return
. \}
.
. if !""\\$3" \
. hy \\$3
.
. if !""\\$4" \{\
. nr t*v \\n[.v]
. nr t*s \\n[.ps]
. nr t*hy \\n[.hy]
. \}
..
.
.
.\" ******************************************************************
.\" ** Hilfsmakros pop/pops/popr (pop stackelement): **
.\" ** pop or popr: pop register **
.\" ** pops: pop string **
.\" ** .pop[s|r] reg|string stackname **
.\" ** reg|string: name of reg/string to get the **
.\" ** popped element **
.\" ** stack: name of stack **
.\" ******************************************************************
.de *pop
. ie "\\$1"pops" \
. ds \\$2 \\$4\" pop first stackelement
. el \
. nr \\$2 \\$4
.
. ds $3 \\$3\" remember stackname
. shift 4 \" shift four args
.
. ds \\*[$3] "\\$@\" fill stack with remaining elements
..
.
.de pop
. *pop \\$0 \\$1 \\$2 \\*[\\$2]
..
.
.als popr pop
.als pops pop
.
.
.\" ******************************************************************
.\" ** process diversion **
.\" ******************************************************************
.de t*DI
. nr * \\n[.u]
. nf \" diversion is already formatted - output it unchanged
. \\$1 \" output the diversion ...
. rm \\$1 \" ... and remove it
. if \\n[*] \
. fi \" reactivate formatting
..
.
.\" ******************************************************************
.\" ** error checking at end **
.\" ******************************************************************
.de t*EM
.
. if !"\\*[t*kept]"" \{\
. tm1 "hdtbl: Not all tables have been printed.
. tm1 " Add '.bp' at the end of your document.
. \}
. if !"\\*[t*held]"" \{\
. tm1 "hdtbl: There are held tables which haven't been printed.
. tm1 " Add '.t*free' at the end of your document.
. \}
. if \\n[t*#] \
. tm hdtbl: Missing '.ETB' macro; last .TBL in \\*[t*FN] at line \\*[t*LN].
..
.
.
.\" Local Variables:
.\" mode: nroff
.\" fill-column: 72
.\" End:
.\" vim: set filetype=groff textwidth=72:
|
