196 lines
3.8 KiB
PostScript
196 lines
3.8 KiB
PostScript
%
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% Redefiniton of the PostScript file output operators so results go to paper.
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% Complicated and slow, but the implementation doesn't place many demands on
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% included PostScript. About all that's required is gentle treatment of the
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% graphics state between write calls.
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%
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/#copies 1 store
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/aspectratio 1 def
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/font /Courier def
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/formsperpage 1 def
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/landscape false def
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/magnification 1 def
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/orientation 0 def
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/pointsize 10 def
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/rotation 1 def
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/xoffset .1 def
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/yoffset .1 def
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/roundpage true def
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/useclippath true def
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/pagebbox [0 0 612 792] def
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/inch {72 mul} def
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/min {2 copy gt {exch} if pop} def
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/HardcopySetup {
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landscape {/orientation 90 orientation add def} if
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font findfont 1 1.1 div scalefont setfont
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pagedimensions
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xcenter ycenter translate
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orientation rotation mul rotate
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width 2 div neg height 2 div translate
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xoffset inch yoffset inch neg translate
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pointsize 1.1 mul dup scale
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magnification dup aspectratio mul scale
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height width div 1 min dup scale
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0 -1 translate
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0 0 moveto
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} def
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/pagedimensions {
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useclippath {
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/pagebbox [clippath pathbbox newpath] def
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roundpage currentdict /roundpagebbox known and {roundpagebbox} if
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} if
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pagebbox aload pop
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4 -1 roll exch 4 1 roll 4 copy
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landscape {4 2 roll} if
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sub /width exch def
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sub /height exch def
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add 2 div /xcenter exch def
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add 2 div /ycenter exch def
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} def
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%
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% Unbind the operators in an executable array or packedarray. Leaves the
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% unbound array or the original object on the stack.
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%
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/Unbind {
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0 index xcheck
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1 index type /arraytype eq
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2 index type /packedarraytype eq or and {
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dup length array copy cvx
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dup 0 exch {
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dup type /operatortype eq {
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( ) cvs cvn cvx
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} if
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dup type /dicttype eq {
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dup maxlength dict exch {
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Unbind
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3 copy put pop pop
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} forall
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} if
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0 index xcheck
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1 index type /arraytype eq
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2 index type /packedarraytype eq or and {
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Unbind
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} if
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3 copy put pop
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1 add
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} forall
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pop
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} if
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} def
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%
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% New write operator - don't bind the definition! Expands tabs and backspaces,
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% wraps long lines, and starts a new page whenever necessary. The code that
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% handles newlines assumes lines are separated by one vertical unit.
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%
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/write {
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true exch
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%%case '\b':
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dup 8#10 eq {
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( ) stringwidth pop neg 0 rmoveto
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currentpoint pop 0 lt {
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currentpoint exch pop 0 exch moveto
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} if
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exch pop false exch
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} if
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%%case '\t':
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dup 8#11 eq {
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currentpoint pop ( ) stringwidth pop div round cvi
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8 mod 8 exch sub {
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2 index 8#40 write
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} repeat
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exch pop false exch
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} if
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%%case '\n':
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dup 8#12 eq {
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currentpoint 0 exch 1 sub moveto pop
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gsave clippath pathbbox pop pop exch pop grestore
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currentpoint exch pop 1 sub ge {
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2 index 8#14 write
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} if
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exch pop false exch
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} if
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%%case '\f':
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dup 8#14 eq {
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gsave showpage grestore
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0 0 moveto
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exch pop false exch
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} if
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%%case '\r':
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dup 8#15 eq {
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currentpoint 0 exch moveto pop
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exch pop false exch
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} if
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%%case EOF:
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dup -1 eq {
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currentpoint 0 ne exch 0 ne or {
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2 index 8#14 write
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} if
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exch pop false exch
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} if
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%%default:
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exch {
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dup
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gsave clippath pathbbox pop 3 1 roll pop pop grestore
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( ) stringwidth pop currentpoint pop add le {
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2 index 8#12 write
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} if
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( ) dup 0 4 -1 roll put show
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} if
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pop % the character
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pop % and file object
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} def
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%
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% All the other file output operators call our redefined write operator.
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%
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/print {
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(%stdout) (w) file exch {1 index exch write} forall
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pop
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} def
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/writestring {
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{1 index exch write} forall
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pop
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} def
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/writehexstring {
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(0123456789ABCDEF) 3 1 roll {
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dup
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3 index exch -4 bitshift 16#F and get 2 index exch write
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2 index exch 16#F and get 1 index exch write
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} forall
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pop pop
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} def
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%
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% Unbind and redefine the remaining file output procedures.
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%
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/= dup load Unbind def
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/== dup load Unbind def
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/stack dup load Unbind def
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/pstack dup load Unbind def
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