summaryrefslogtreecommitdiff
path: root/info/examples/tex-in-practice/counters.tip
diff options
context:
space:
mode:
Diffstat (limited to 'info/examples/tex-in-practice/counters.tip')
-rw-r--r--info/examples/tex-in-practice/counters.tip87
1 files changed, 87 insertions, 0 deletions
diff --git a/info/examples/tex-in-practice/counters.tip b/info/examples/tex-in-practice/counters.tip
new file mode 100644
index 0000000000..735e86d62e
--- /dev/null
+++ b/info/examples/tex-in-practice/counters.tip
@@ -0,0 +1,87 @@
+% This macro source file is from the four volume series
+% "TeX in Practice" by Stephan von Bechtolsheim, published
+% 1993 by Springer-Verlag, New York.
+% Copyright 1993 Stephan von Bechtolsheim.
+% No warranty or liability is assumed.
+% This macro may be copied freely if no fees other than
+% media cost or shipping charges are charged and as long
+% as this copyright and the following source code itself
+% is not changed. Please see the series for further information.
+%
+% Version: 1.0
+% Date: May 1, 1993
+%
+%
+% This source code is documented in 3.4.2, p. I-71.
+% Original source in file "reg1.TEX", starting line 2216.
+\wlog{L: "counters.tip" ["reg1.TEX," l. 2216, p. I-71]}%
+% This file DOES belong to format "texip."
+\InputD{newoutfr.tip}
+\InputD{printco.tip}
+\InputD{namedef.tip}
+\catcode`\@ = 11
+\def\NewCounter #1#2#3#4{%
+ \wlog{\string\NewCounter: allocating new counter "#1."}%
+ \if\NameDefinedConditional{@C-#1}%
+ \errmessage{\string\NewCounter: counter "#1" was
+ allocated previously.}%
+ \fi
+ \expandafter\newcountOF\csname @C-#1\endcsname
+ \ReassignCounter{#1}{#2}{#3}{#4}%
+ \NameDef{@ResetC-#1}{}%
+}
+\def\ReassignCounter #1#2#3#4{%
+ \if\NameDefinedConditional{@C-#1}%
+ \else
+ \errmessage{\string\ReassignCounter: counter "#1"
+ not defined before.}%
+ \fi
+ \NameDef{@TheC-#1}{%
+ \expandafter\expandafter\expandafter#2%
+ \expandafter{\csname @C-#1\endcsname}%
+ }%
+ \NameDef{@TheArabicC-#1}{%
+ \expandafter\the\csname @C-#1\endcsname
+ }%
+ \NameDef{@PriC-#1}{#3}%
+ \NameDef{@RefC-#1}{#4}%
+}
+\def\TheCounter #1{%
+ \NameUse{@TheC-#1}%
+}
+\def\TheArabicCounter #1{%
+ \NameUse{@TheArabicC-#1}%
+}
+\def\PrintCounter #1{%
+ \NameUse{@PriC-#1}%
+}
+\def\RefCounter #1{%
+ \NameUse{@RefC-#1}%
+}
+\let\RefCounterTwo = \RefCounter
+\def\CounterToRegister #1#2{%
+ #1 = \csname @C-#2\endcsname\relax
+}
+\def\AddCounterToResetList #1#2{%
+ {%
+ \def\@ResetCounter{\noexpand\@ResetCounter}%
+ \expandafter\xdef\csname @ResetC-#2\endcsname{%
+ \csname @ResetC-#2\endcsname\@ResetCounter{#1}%
+ }%
+ }%
+}
+\def\StepCounter #1{%
+ \global\expandafter\advance\csname @C-#1\endcsname by 1
+ \NameUse{@ResetC-#1}%
+}
+\def\SetCounter #1#2{%
+ \global\expandafter\csname @C-#1\endcsname = #2\relax
+}
+\def\AssignCounterToReg #1#2{%
+ #2 = \expandafter\csname @C-#1\endcsname
+ \relax
+}
+\def\@ResetCounter #1{%
+ \global\csname @C-#1\endcsname = 0
+}
+\catcode`\@ = 12