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% Copyright (C) 1995, Digital Equipment Corporation.
% All rights reserved.
% See the file pstotext.txt for a full description.
% ocr.ps, part of BuildLectern
%
% This is a PostScript library to send the characters rendered by a
% PostScript job back on stdout. The output is intended to allow
% reconstruction of the document's words and an approximation of the words'
% bounding rectangles.
% Last modified on Fri Jan 9 21:20:00 AEST 2004 by rjl
% modified on Sat Feb 5 21:00:00 AEST 2000 by rjl
% modified on Fri Oct 2 17:13:53 PDT 1998 by mcjones
% modified on Thu Jan 25 15:24:37 PST 1996 by deutsch
% modified on Wed May 3 15:41:30 PDT 1995 by birrell
% Modified by rjl
% For Ghostscript 6 or later.
% Change ashow, widthshow and awidthshow to call show for each character.
% Add xshow, yshow, xyshow.
% Restrictions:
%
% This library redefines some names that are originally defined as
% operators, and of course the new definitions are procedures. Some
% jobs might be sensitive to this distinction. In this case, you'd
% need to make "redef" create a new operator. For example, "odef".
%
% This library reports characters rendered by show, ashow, widthshow,
% awidthshow, kshow, xshow, yshow and xyshow.
% The characters are reported even if they would
% be invisible in final hardcopy. This could happen, for example, if the
% characters get clipped, or if they get overprinted, or if they are the
% same color as their background, or if the font's glyph make no marks.
%
% PostScript doesn't specify a standard character code for the characters
% being rendered; rather, the font maps small integers into glyphs. It's
% not possible in general to determine a translation back into a standard
% character code. This library approximates this by giving mappings from
% the job's characters to indexes into a table of known glyph names. This
% handles most PostScript jobs that we've encountered, but it's not an
% absolute solution to the problem.
% Output format:
%
% The "reporting coordinate system" is the device coordinate system. The
% application interpreting this library's output needs to understand the
% device coordinate system.
%
% Positions are reported in the reporting coordinate system, but with (x,y)
% values multiplied by 100 and rounded to integers. Note that
% positions might involve negative integers.
%
% The directives, whitespace and numbers are themselves encoded in ASCII.
% The strings in the "S" directives are in currentfont's encoding: they
% should be treated as 8-bit binary data.
%
% QI 6-integers
% Specifies the inverse of the currentmatrix for
% the current output device, after rotXXX.ps and
% before the document is processed.
%
% QM m blx bly trx try 256-pairs
% Introduces a new character metrics table used by
% some font, where "m" is an integer that identifies
% the metrics table in subsequent "F" directives. "m"
% is small. (blx,bly) is the bottom left corner of the
% font's bounding box, and (trx,try) is its top right.
% The pairs are the stringwidth of each character in the
% font's encoding. All of these are reported in the
% font's character coordinate system, multiplied by 100
% and rounded to integers. The metrics
% table will be referenced in a subsequent "F"
% directive, which includes information mapping the
% font's metrics to the initial user coordinate system.
% Note that values of "m" might get reused, after a
% "restore".
%
% QE e n n-integers Introduces a new encoding, where "e" is an integer
% that identifies the encoding in subsequent "F"
% directives. "e" is small. "e" is followed by
% an integer "n" and then by a sequence of
% exactly n integers. The i'th integer
% specifies the glyph for the i'th entry of the
% font's encoding vector. The value of the
% integer is usually an index in the array
% "StandardGlyphs", defined below. Note that
% the first 256 entries of that array equal the
% corresponding entries of ISOLatin1Encoding.
% The value 9999 indicates that this entry in
% the font's encoding specifies a glyph not
% named in StandardGlyphs. Note that values of
% "e" might get reused, after a "restore".
%
% QF n x y x' y' e m Introduces a new font, where "n" is an integer
% that identifies the font in subsequent "S"
% directives. "n" is small. (x,y) is the
% position corresponding to (1000,0) in the font's
% character coordinate system, and (x',y') is the
% position corresponding to (0,1000), both as they would
% be if the character were drawn with its origin at
% the origin of the reporting coordinate system. "e" is
% an integer specifying a previously defined
% encoding vector. "m" is an integer specifying a
% previously defined metrics table. Note that values
% of "n" might get reused, after a "restore".
%
% QS n x y l s x' y' Reports rendering of string "s" in font "n".
% (x,y) is the position corresponding to the origin of
% the first character. "l" is length of the string,
% followed immediately by a single space then the string.
% (x',y') is the position that would correspond to the
% origin of a subsequent character. The
% string reported by this directive is never empty.
% The string also never contains a "space": strings
% that would have contained a "space" are split up
% into multiple directives, with the "space"
% omitted. Here "space" means the first character
% in the font's encoding that maps to the glyph
% named "/space", if there is such a character.
%
% QC copypage was invoked
%
% QZ erasepage was invoked
%
% QP showpage was invoked
%
% globals and subroutines
%
%/setglobal where
% { pop currentglobal /setglobal load true setglobal }
% { { } }
%ifelse
revision 353 ge {
NOBIND /DELAYBIND where { pop DELAYBIND or } if
{ systemdict begin
/bind /.bind load
/.forcedef where { pop .forcedef } { def } ifelse
end
}
if
} if
% put our private stuff in a local dictionary,
% but place a reference to it in systemdict
systemdict begin
/pstotextLocalDict 30 dict /.forcedef where { pop .forcedef } { def } ifelse
end
pstotextLocalDict begin % following stuff is private
/redef { systemdict begin 1 index exch .makeoperator def end } bind def
/privateDict currentdict def % for lastFontNum and lastEncoding
/fonts 200 dict def % maps font to integer "n"
/fontsUnit 200 dict def % (1000,0) and (0,1000) transformed, per font
/encodings 200 dict def % maps encoding array to integer "e"
/encodingSpace 200 dict def % space char for each encoding
/metrics 200 dict def % maps font UniqueID to integer "m"
/lastFontNum 0 def % last integer used for a font
/lastEncoding 0 def % last integer used for an encoding
/lastMetrics 0 def % last integer used for a metrics table
/tempString 20 string def % scratch for printing integers
/reportMatrix matrix identmatrix def % maps device coords to reporting coords
/inUse false def % prevents recursive invokcation of "report"
/TimesRomanGlyphs [
% ISOLatin1Encoding ...
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /space /exclam /quotedbl
/numbersign /dollar /percent /ampersand /quoteright
/parenleft /parenright /asterisk /plus /comma
/minus /period /slash /zero /one
% 50
/two /three /four /five /six
/seven /eight /nine /colon /semicolon
/less /equal /greater /question /at
/A /B /C /D /E
/F /G /H /I /J
/K /L /M /N /O
/P /Q /R /S /T
/U /V /W /X /Y
/Z /bracketleft /backslash /bracketright /asciicircum
/underscore /quoteleft /a /b /c
% 100
/d /e /f /g /h
/i /j /k /l /m
/n /o /p /q /r
/s /t /u /v /w
/x /y /z /braceleft /bar
/braceright /asciitilde /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /.notdef
/.notdef /.notdef /.notdef /.notdef /dotlessi
/grave /acute /circumflex /tilde /macron
% 150
/breve /dotaccent /dieresis /.notdef /ring
/cedilla /.notdef /hungarumlaut /ogonek /caron
/space /exclamdown /cent /sterling /currency
/yen /brokenbar /section /dieresis /copyright
/ordfeminine /guillemotleft /logicalnot /hyphen /registered
/macron /degree /plusminus /twosuperior /threesuperior
/acute /mu /paragraph /periodcentered /cedilla
/onesuperior /ordmasculine /guillemotright /onequarter /onehalf
/threequarters /questiondown /Agrave /Aacute /Acircumflex
/Atilde /Adieresis /Aring /AE /Ccedilla
% 200
/Egrave /Eacute /Ecircumflex /Edieresis /Igrave
/Iacute /Icircumflex /Idieresis /Eth /Ntilde
/Ograve /Oacute /Ocircumflex /Otilde /Odieresis
/multiply /Oslash /Ugrave /Uacute /Ucircumflex
/Udieresis /Yacute /Thorn /germandbls /agrave
/aacute /acircumflex /atilde /adieresis /aring
/ae /ccedilla /egrave /eacute /ecircumflex
/edieresis /igrave /iacute /icircumflex /idieresis
/eth /ntilde /ograve /oacute /ocircumflex
/otilde /odieresis /divide /oslash /ugrave
% 250
/uacute /ucircumflex /udieresis /yacute /thorn
/ydieresis
% Other glyphs from /Times-Roman ...
% 256
/quotedblright /Scaron /dagger /guilsinglleft
/Zcaron /daggerdbl /Lslash /ellipsis /guilsinglright
/oe /fi /bullet /perthousand /quotedblbase
/endash /emdash /trademark /florin /lslash
/scaron /Ydieresis /fl /fraction /quotedblleft
/quotesinglbase /quotesingle /zcaron /OE
% 284
] def
/dvipsGlyphs [
% Self-named glyphs for dvitops type 3 fonts ...
% 284
0 1 255 { 1 string dup 0 4 -1 roll put cvn } for
% 540
] def
/ttypeGlyphs1 [
% Glyph names used by MS TrueType encodings ...
% 540
/G00 /G01 /G02 /G03 /G04 /G05 /G06 /G07 /G08 /G09 /G0a /G0b /G0c /G0d /G0e
/G0f /G10 /G11 /G12 /G13 /G14 /G15 /G16 /G17 /G18 /G19 /G1a /G1b /G1c /G1d
/G1e /G1f /G20 /G21 /G22 /G23 /G24 /G25 /G26 /G27 /G28 /G29 /G2a /G2b /G2c
/G2d /G2e /G2f /G30 /G31 /G32 /G33 /G34 /G35 /G36 /G37 /G38 /G39 /G3a /G3b
% 600
/G3c /G3d /G3e /G3f /G40 /G41 /G42 /G43 /G44 /G45 /G46 /G47 /G48 /G49 /G4a
/G4b /G4c /G4d /G4e /G4f /G50 /G51 /G52 /G53 /G54 /G55 /G56 /G57 /G58 /G59
/G5a /G5b /G5c /G5d /G5e /G5f /G60 /G61 /G62 /G63 /G64 /G65 /G66 /G67 /G68
/G69 /G6a /G6b /G6c /G6d /G6e /G6f /G70 /G71 /G72 /G73 /G74 /G75 /G76 /G77
/G78 /G79 /G7a /G7b /G7c /G7d /G7e /G7f /G80 /G81 /G82 /G83 /G84 /G85 /G86
/G87 /G88 /G89 /G8a /G8b /G8c /G8d /G8e /G8f /G90 /G91 /G92 /G93 /G94 /G95
/G96 /G97 /G98 /G99 /G9a /G9b /G9c /G9d /G9e /G9f /Ga0 /Ga1 /Ga2 /Ga3 /Ga4
/Ga5 /Ga6 /Ga7 /Ga8 /Ga9 /Gaa /Gab /Gac /Gad /Gae /Gaf /Gb0 /Gb1 /Gb2 /Gb3
/Gb4 /Gb5 /Gb6 /Gb7 /Gb8 /Gb9 /Gba /Gbb /Gbc /Gbd /Gbe /Gbf /Gc0 /Gc1 /Gc2
/Gc3 /Gc4 /Gc5 /Gc6 /Gc7 /Gc8 /Gc9 /Gca /Gcb /Gcc /Gcd /Gce /Gcf /Gd0 /Gd1
% 750
/Gd2 /Gd3 /Gd4 /Gd5 /Gd6 /Gd7 /Gd8 /Gd9 /Gda /Gdb /Gdc /Gdd /Gde /Gdf /Ge0
/Ge1 /Ge2 /Ge3 /Ge4 /Ge5 /Ge6 /Ge7 /Ge8 /Ge9 /Gea /Geb /Gec /Ged /Gee /Gef
/Gf0 /Gf1 /Gf2 /Gf3 /Gf4 /Gf5 /Gf6 /Gf7 /Gf8 /Gf9 /Gfa /Gfb /Gfc /Gfd /Gfe
/Gff
% 796
] def
/ttypeGlyphs2 [
% 796
/G00 /G01 /G02 /G03 /G04 /G05 /G06 /G07 /G08 /G09 /G0A /G0B /G0C /G0D
/G0E /G0F /G10 /G11 /G12 /G13 /G14 /G15 /G16 /G17 /G18 /G19 /G1A /G1B /G1C
/G1D /G1E /G1F /G20 /G21 /G22 /G23 /G24 /G25 /G26 /G27 /G28 /G29 /G2A /G2B
/G2C /G2D /G2E /G2F /G30 /G31 /G32 /G33 /G34 /G35 /G36 /G37 /G38 /G39 /G3A
/G3B /G3C /G3D /G3E /G3F /G40 /G41 /G42 /G43 /G44 /G45 /G46 /G47 /G48 /G49
/G4A /G4B /G4C /G4D /G4E /G4F /G50 /G51 /G52 /G53 /G54 /G55 /G56 /G57 /G58
/G59 /G5A /G5B /G5C /G5D /G5E /G5F /G60 /G61 /G62 /G63 /G64 /G65 /G66 /G67
% 900
/G68 /G69 /G6A /G6B /G6C /G6D /G6E /G6F /G70 /G71 /G72 /G73 /G74 /G75 /G76
/G77 /G78 /G79 /G7A /G7B /G7C /G7D /G7E /G7F /G80 /G81 /G82 /G83 /G84 /G85
/G86 /G87 /G88 /G89 /G8A /G8B /G8C /G8D /G8E /G8F /G90 /G91 /G92 /G93 /G94
/G95 /G96 /G97 /G98 /G99 /G9A /G9B /G9C /G9D /G9E /G9F /GA0 /GA1 /GA2 /GA3
/GA4 /GA5 /GA6 /GA7 /GA8 /GA9 /GAA /GAB /GAC /GAD /GAE /GAF /GB0 /GB1 /GB2
/GB3 /GB4 /GB5 /GB6 /GB7 /GB8 /GB9 /GBA /GBB /GBC /GBD /GBE /GBF /GC0 /GC1
/GC2 /GC3 /GC4 /GC5 /GC6 /GC7 /GC8 /GC9 /GCA /GCB /GCC /GCD /GCE /GCF /GD0
/GD1 /GD2 /GD3 /GD4 /GD5 /GD6 /GD7 /GD8 /GD9 /GDA /GDB /GDC /GDD /GDE /GDF
/GE0 /GE1 /GE2 /GE3 /GE4 /GE5 /GE6 /GE7 /GE8 /GE9 /GEA /GEB /GEC /GED /GEE
/GEF /GF0 /GF1 /GF2 /GF3 /GF4 /GF5 /GF6 /GF7 /GF8 /GF9 /GFA /GFB /GFC /GFD
% 1050
/GFE /GFF
% 1052
] def
/oldDviGlyphs [
% More self-named glyphs for old dvitops type 3 fonts ...
% 1052
0 1 127 { 10 3 string cvrs cvn } for
% 1180
] def
/StandardGlyphs //TimesRomanGlyphs length 896 add array def
//StandardGlyphs 0 //TimesRomanGlyphs putinterval
//StandardGlyphs //TimesRomanGlyphs length //dvipsGlyphs putinterval
//StandardGlyphs //TimesRomanGlyphs length 256 add //ttypeGlyphs1 putinterval
//StandardGlyphs //TimesRomanGlyphs length 512 add //ttypeGlyphs2 putinterval
//StandardGlyphs //TimesRomanGlyphs length 768 add //oldDviGlyphs putinterval
/standardMap StandardGlyphs length dict
% Maps names to indices in StandardGlyphs.
0 StandardGlyphs {
2 index exch
2 copy known { pop pop } { 2 index put } ifelse
1 add
} forall
pop def
/printInt { % stack: n
% Prints an integer followed by a space on stdout
//tempString cvs print ( ) print
} bind def
/showxy { %stack: x y
% prints a pair of integers on stdout, converting to 1/100th's
exch
100 mul round cvi //printInt exec
100 mul round cvi //printInt exec
} bind def
/characterToReporting { % stack: x y -> x' y'
% Transforms a vector in currentfont's character coordinate
% system to the reporting coordinate system
currentfont /FontMatrix get
dtransform % to current user coordinates
dtransform % to device coordinates
//reportMatrix idtransform % to reporting coordinates
} def
/printCharacterOrigin {
% Prints the position in the reporting coordinate system at which a
% character origin would be painted using currentfont
0 0 currentfont /FontMatrix get transform
currentpoint exch 4 -1 roll add 3 1 roll add
transform //reportMatrix itransform
//showxy exec
} bind def
/printMap {
% Print map from indices in currentfont/Encoding to StandardEncoding indices
16 currentfont /Encoding get dup length //printInt exec {
exch dup 16 eq { () = pop 1 } { 1 add } ifelse exch
//standardMap exch
2 copy known {
get //printInt exec
} {
pop pop (9999 ) print
} ifelse
} forall
pop () =
} bind def
/metricsString (X) def
/printMetrics {
% Print bounding box and character metrics for currentfont
% Sadly, dvitops produces illegal type 3 fonts with no /.notdef entry. The
% use of "stopped" deals with that and any other silliness.
currentfont /FontBBox get aload pop 4 2 roll
//showxy exec
//showxy exec
currentfont /FontMatrix get
currentfont /FontType get 3 eq {
//privateDict /pm.dictCount countdictstack put
count //privateDict exch /pm.count exch put
//privateDict /pm.save save put
0 1 255 {
dup 8 mod 0 eq { () = } if
//metricsString exch 0 exch put
{ //metricsString //stringwidth exec
2 index idtransform % to font's character coordinates
} stopped {
count //privateDict /pm.count get sub { pop } repeat
countdictstack //privateDict /pm.dictCount get sub { end } repeat
//privateDict /pm.save get restore
//privateDict /pm.save save put
0 0
} if
//showxy exec
} for
//privateDict /pm.save get restore % necessary to balance the "save"
}{
currentfont /CharStrings get
currentfont /Encoding get
0 1 255 {
dup 8 mod 0 eq { () = } if
2 copy get 3 index exch known {
//metricsString exch 0 exch put
//metricsString //stringwidth exec
4 index idtransform % to font's character coordinates
} {
pop 0 0
} ifelse
//showxy exec
} for
pop pop % encoding, charstrings
} ifelse
pop % fontmatrix
} bind def
%
% The main work: reportMetrics, reportEncoding, reportFont and report
%
/reportMetrics { % stack: -> m
% privateDict is open
% Print new "m" directive for currentfont
(QM ) print
lastMetrics 1 add /lastMetrics 1 index def
dup //printInt exec
//printMetrics exec
() =
} bind def
/reportEncoding { % stack: -> e
% privateDict is open
% Print new "e" directive for currentfont
(QE ) print
lastEncoding 1 add /lastEncoding 1 index def
dup //printInt exec
//printMap exec
} bind def
/spaceString (X) def % for space char from current encoding
/reportFont { % stack: any -> unchanged
% Report currentfont to the user and record its number
% //privateDict is open
% Sets //privateDict/spaceString to font's encoding's space string, if any,
% and sets //privateDict/hasSpace to indicate whether there's a space char.
currentfont /UniqueID known not {
//reportMetrics exec
} {
//metrics currentfont /UniqueID get
2 copy known {
get
} {
//reportMetrics exec
dup 4 1 roll put % define in /metrics
} ifelse
} ifelse % stack: m
//encodings currentfont /Encoding get
2 copy known {
get
} {
//reportEncoding exec % leaves e on stack
dup 4 1 roll put % define in /encodings
% Find space character number for the encoding.
% Biased towards number 32, so avoid problems with weird encodings
//encodingSpace 1 index % dict and key for putting the result
currentfont /Encoding get
dup length 32 le {
false
} {
dup 32 get dup /space eq exch /G20 eq or
} ifelse {
pop 32
} {
% It's not character number 32: search from 0
0 exch {
dup /space eq exch dup /G20 eq exch /suppress eq or or { exit } if
1 add
} forall
} ifelse
put % put in /encodingSpace
} ifelse % stack: m e
//encodingSpace 1 index get % font's space character (256 if none)
/hasSpace 1 index 256 lt def
hasSpace { //spaceString exch 0 exch put } { pop } ifelse
(QF ) print
lastFontNum 1 add /lastFontNum 1 index def
//fonts currentfont 2 index put % record fontNum in /fonts
dup //printInt exec % print fontNum
% stack: m e f
1000 0 //characterToReporting exec 2 copy //showxy exec
0 1000 //characterToReporting exec 2 copy //showxy exec
4 array astore % stack: m e f array
//fontsUnit 3 1 roll put % stack: m e
//printInt exec % print encoding number
//printInt exec % print metrics number
() =
} bind def
/reportFontCreation { % stack: font
% Report a newly created font. Called now so that if later uses are
% inside a save/restore we don't forget it.
% NOTE: this is currently not used, since it actually slows things down
//privateDict begin
inUse not {
/inUse true def
dup currentfont exch setfont //reportFont exec setfont
/inUse false def
} if
end
} bind def
/reportSubString { % stack: args string -> args
% Report the rendering of a string, assumed to be a single word.
% privateDict is open. /n is font number, /p is call-back
dup length 0 eq {
p
} {
(QS ) print
n //printInt exec
//printCharacterOrigin exec
dup length //printInt exec
dup print ( ) print
/p load end % close privateDict during the call-back
exec % render the string; leaves args on stack
//privateDict begin
//printCharacterOrigin exec
() =
} ifelse
} bind def
/report { % stack: args string proc -> args
% Report the rendering of a string.
% Calls proc for each word and space. The call-back should expect "args"
% on the stack followed by a string, and should leave "args" on the stack.
//privateDict begin
inUse {
end exec
} {
/inUse true def
//fonts currentfont
2 copy known not { //reportFont exec } if
get % stack: probable font-number
% check if points transform as before ...
//fontsUnit 1 index get
1000 0 //characterToReporting exec
0 1000 //characterToReporting exec
4 index 3 get ne 4 1 roll
4 index 2 get ne 4 1 roll
4 index 1 get ne 4 1 roll
4 index 0 get ne 5 -1 roll pop
or or or { % if transformed points differ
//reportFont exec
pop //fonts currentfont get
} if % stack: args string proc n
/n exch def
/p exch def % stack: args string
hasSpace {
{ % begin loop
//spaceString search {
exch pop exch /s exch def
//reportSubString exec
//spaceString p
s
} {
//reportSubString exec
exit
} ifelse
} loop
} {
//reportSubString exec
} ifelse
/inUse false def
end
} ifelse
} bind def
/dontReport { % stack: proc
% Call "proc" with //privateDict/inUse set to true
//privateDict /inUse get {
exec
} {
//privateDict /inUse true put
exec
//privateDict /inUse false put
} ifelse
} bind def
/kshow.temp (X) def % scratch space for kshow
% Output from groff 1.08 sometimes uses ashow to show letters from
% two separate words, with the offset being used to add the space.
% Implement 'awidthshow' and friends as calls to 'show' to catch this.
/pstotext_awidthshow { % cx cy char ax ay string --
//kshow.temp
0 1 3 index length 1 sub
{
2 index exch get
1 index 0 2 index put
1 index show
4 index 4 index rmoveto
5 index eq
{ 6 index 6 index rmoveto } if
} for
pop pop pop pop pop pop pop
} def
/pstotext_xshow { % string numarray --
//kshow.temp
0 1 4 index length 1 sub
{
currentpoint 2 index
6 index exch get
4 index 0 2 index put pop
3 index show
moveto
% set char width from array
2 index exch get
0 rmoveto
} for
pop pop pop
} def
/pstotext_yshow { % string numarray --
//kshow.temp
0 1 4 index length 1 sub
{
currentpoint 2 index
6 index exch get
4 index 0 2 index put pop
3 index show
moveto
% set char height from array
2 index exch get
0 exch rmoveto
} for
pop pop pop
} def
/pstotext_xyshow { % string numarray --
//kshow.temp
0 1 4 index length 1 sub
{
currentpoint 2 index
6 index exch get
4 index 0 2 index put pop
3 index show
moveto
% set char width and height from array
dup add
2 index 1 index get exch
3 index exch 1 add get
rmoveto
} for
pop pop pop
} def
% Output inverse of initial currentmatrix, for possible use by postprocessor.
(QI ) print
matrix currentmatrix matrix invertmatrix
{ 100 mul round cvi //printInt exec } forall
() =
userdict begin % subsequent definitions are publicly visible
% Objects placed in systemdict must be in global memory,
% and must not reference local objects.
/setglobal where
{ pop currentglobal true setglobal }
{ }
ifelse
%
% Redefine the character rendering operations to call "report"
%
/show { { show }
//systemdict /pstotextLocalDict get /report get
exec } bind redef
%/ashow { {3 copy ashow pop}
% //systemdict /pstotextLocalDict get /report get
% exec pop pop } bind redef
% Implement as call to show to catch PostScript that uses
% these to show letters from separate words.
/ashow {
0 0 -1 6 3 roll
//systemdict /pstotextLocalDict get /pstotext_awidthshow get exec
} bind redef
/widthshow {
0 0 3 -1 roll
//systemdict /pstotextLocalDict get /pstotext_awidthshow get exec
} bind redef
/awidthshow {
//systemdict /pstotextLocalDict get /pstotext_awidthshow get exec
} bind redef
/xshow {
//systemdict /pstotextLocalDict get /pstotext_xshow get exec
} bind redef
/yshow {
//systemdict /pstotextLocalDict get /pstotext_yshow get exec
} bind redef
/xyshow {
//systemdict /pstotextLocalDict get /pstotext_xyshow get exec
} bind redef
/kshow { % stack: proc string
exch //systemdict /pstotextLocalDict get exch /kshow.proc exch put
false exch % stack: false string
{ % stack: false next | prev true next
//systemdict /pstotextLocaldict get /kshow.temp get 0 2 index put
exch { //systemdict /pstotextLocalDict get
/kshow.proc get exec
} { pop } ifelse
//systemdict /pstotextLocaldict get
/kshow.temp get //show exec
//systemdict /pstotextLocaldict get
/kshow.temp get 0 get true % stack: this true
} forall
% stack: false | last true
{ pop } if
} bind redef
%
% Redefine non-rendering operations so that they don't report
%
/stringwidth { {stringwidth}
//systemdict /pstotextLocalDict get /dontReport get
exec } bind redef
/charpath { {charpath}
//systemdict /pstotextLocalDict get /dontReport get
exec } bind redef
%
% Intercept and report the page operations
%
/copypage { (QC) = flush copypage } bind redef
/erasepage { (QZ) = flush erasepage } bind redef
/showpage { (QP) = flush showpage } bind redef
%
% Intercept font creation so as to record the font inside less save/restore's
% NOTE: disabled, because it actually slows things down
%
% /definefont { definefont //reportFontCreation exec } bind redef
% /makefont { makefont //reportFontCreation exec } bind redef
% /scalefont { scalefont //reportFontCreation exec } bind redef
%
% Clean-up
%
% restore local/global state
/setglobal where
{ pop setglobal }
{ }
ifelse
end % close nested userdict begin
end % close private dictionary
% Bind the operators we just defined, and all the others if we didn't
% do it before. Also reenable 'bind' for future files.
revision 353 ge {
.bindoperators
NOBIND currentdict systemdict ne and
{ systemdict begin .bindoperators end }
if
/DELAYBIND where { pop DELAYBIND { .bindnow } if } if
} if
systemdict readonly pop
% Restore the current local/global VM mode.
% exec
%
% Testing
%
false {
100 dict begin
(Times 12, two strings; second one sloping up with ashow:)=
/Times-Roman findfont 12 scalefont dup /t12 exch def setfont
72 300 moveto (Hello world) show
72 280 moveto 10 1 (Hello world once more) ashow
(Times 10 two strings:)=
/Times-Roman findfont 10 scalefont setfont
72 260 moveto (Third) show
72 240 moveto (Fourth) show
(Symbol 12, one string:)=
/Symbol findfont 12 scalefont setfont
72 220 moveto (symbol string) show
(Helvetica 12, two strings:)=
/Helvetica findfont 12 scalefont setfont
72 200 moveto (Fifth) show
72 180 moveto (Sixth) show
(Times 12 again, two strings; second one with kshow:)=
t12 setfont
72 160 moveto (Seventh) show
end
72 140 moveto
gsave
/dx 1.0 def
{ pop pop
dx 1 add /dx 1 index def
0 rmoveto } (Accelerated letter spacing) kshow
grestore
(Times 12 scaled by 2:)=
72 100 moveto
gsave
2 2 scale
(Ninth) show
grestore
count 0 ne { (Left on stack:)= pstack } if
flush
} if
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