/usr/share/ghostscript/9.06/Resource/Init/pdf_main.ps is in libgs9-common 9.06~dfsg-2+deb8u7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 | % Copyright (C) 2001-2012 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael,
% CA 94903, U.S.A., +1(415)492-9861, for further information.
%
% pdf_main.ps
% PDF file- and page-level operations.
/.setlanguagelevel where { pop 2 .setlanguagelevel } if
.currentglobal //true .setglobal
/pdfdict where { pop } { /pdfdict 100 dict def } ifelse
pdfdict begin
% Patch in an obsolete variable used by some third-party software.
/#? //false def
% Test whether the current output device handles pdfmark.
/.writepdfmarkdict 1 dict dup /pdfmark //null put readonly def
/.writepdfmarks { % - .writepdfmarks <bool>
currentdevice //.writepdfmarkdict .getdeviceparams
mark eq { //false } { pop pop //true } ifelse
systemdict /DOPDFMARKS known or
} bind def
% For simplicity, we use a single interpretation dictionary for all
% PDF graphics execution, even though this is too liberal.
/pdfopdict mark
objopdict { } forall
drawopdict { } forall
/endstream { exit } bind
(%%EOF) cvn { exit } bind % for filters
/obj { ( **** Warning: Content stream is not terminated by 'endstream'.\n)
pdfformaterror pop pop exit
} bind
% PDF 1.1 operators
/BX { /BXlevel BXlevel 1 add store } bind
/EX { /BXlevel BXlevel 1 sub store } bind
/PS { cvx exec } bind
% PDF 1.2 operators
/BMC {
/BMClevel BMClevel 1 add store
pop
} bind
/BDC {
/BMClevel BMClevel 1 add store
exch /OC eq {
dup type /nametype eq {
PDFfile fileposition exch % pos /Name
Page /Properties rget {
ocg-is-visible not {
OFFlevels BMClevel dup put
} if
} if
PDFfile exch setfileposition
} {
pop
} ifelse
} {
pop
} ifelse
} bind
/EMC {
OFFlevels BMClevel
2 copy known {
2 copy undef
} if
1 sub /BMClevel exch store
pop
} bind
/MP { pop } bind
/DP { pop pop } bind
/- { 0 % Bug 690016
( **** Warning: Invalid operator '-' is assumed to be a number 0.\n)
pdfformaterror
} bind
.dicttomark readonly def
% ======================== Main program ======================== %
end % pdfdict
userdict begin
/defaultfontname /Times-Roman def
% Make sure the registered encodings are loaded, so we don't run the risk
% that some of the indices for their names will overflow the packed
% representation. (Yes, this is a hack.)
SymbolEncoding pop
DingbatsEncoding pop
% Redefine 'run' so it recognizes PDF files.
systemdict begin
/.runps /run load def
/run {
dup type /filetype ne { (r) file } if
% skip leading whitespace characters (actually anything less than or equal to <sp>)
{ dup ( ) .peekstring not { //false exit } if
dup 0 get 32 le { pop dup read pop pop } { //true exit } ifelse
} loop
exch pop
{
% Appletalk PAP sends short strings with %! header expecting a response.
% 'gv' swallows the %!PS line, then sends DSC comments beginning with %%
% and also waits for a response. The following avoids those hangs.
dup 2 string .peekstring pop dup (%!) eq exch (%%) eq or {
cvx .runps
} {
dup 1023 string .peekstring pop dup length 400 ge {
% "1024 string" exceeds current %stdin buffer
% Valid PDF file cannot be smaller than 400 bytes.
(%PDF-) search {
3 1 roll pop pop
dup (%!PS) search not {
length 0 ne {
1 index exch readstring pop pop
(%stderr) (w) file dup
( **** Warning: File has some garbage before %PDF- .\n)
writestring flushfile
} {
pop
} ifelse
dup (%stdin) (r) file eq {
% Copy PDF from stdin to temporary file then run it.
//null (w+) /.tempfile .systemvar exec exch 3 1 roll
% stack: tempname stdin tempfile
64000 string
{
% stack: tempname stdin tempfile string
2 index 1 index readstring
exch 3 index exch writestring
not { exit } if
}
loop
pop exch closefile
% stack: tempname tempfile
dup 0 setfileposition
dup runpdf
closefile deletefile
} {
runpdf
} ifelse
} {
pop pop pop pop cvx .runps % (%!PS) found first
} ifelse
} {
pop cvx .runps % (%PDF-) not found
} ifelse
} {
pop cvx .runps % too short for PDF
} ifelse
} ifelse
} {
closefile % file was empty
} ifelse
} bind odef
currentdict /runpdfstring .undef
/runpdfbegin { % <file> runpdfbegin -
userdict begin
% It turns out that the PDF interpreter uses memory more
% effectively if it is run under at least one level of save.
% This is counter-intuitive, and we don't understand why it happens,
% but the improvement is significant.
/PDFTopSave save def
0 setobjectformat
/Page# //null def
/Page //null def
/DSCPageCount 0 def
/PDFSave //null def
GS_PDF_ProcSet begin
pdfdict begin
pdfopen begin
} bind def
/runpdfpagerange { % - runpdfpagerange <firstpage#> <lastpage#>
/PortfolioPage where {
pop
PortfolioPage cvi dup pdfpagecount add % a b+1
/PortfolioPage dup load % a b+1 /P ()
( ) 1 index copy pop
dup 3 index exch cvs pop % a b+1 /P (b+1)
store
1 sub % a b
/FirstPage where { pop FirstPage } { 1 } ifelse
/LastPage where { pop LastPage } {2000000000} ifelse % a b fp lp
2 index 2 index lt { % b < fp
1e10
} {
3 index 2 index gt { % a > fp
1
} {
1 index 4 index sub 1 add
} ifelse
} ifelse % a b fp lp f
3 index 2 index lt { % b < bp
3 index 5 index sub 1 add % b-a+1=count
} {
4 index 2 index gt {
0
} {
1 index 5 index sub 1 add
} ifelse
} ifelse % a b fp lp f l
6 2 roll pop pop pop pop
QUIET not {
1 index 1 index gt {
(Skipping the subfuile.) = flush
} {
(Processing pages ) print 1 index =only ( through ) print dup =only
(.) = flush
} ifelse
} if
} {
/FirstPage where {
pop FirstPage dup pdfpagecount gt {
(\nRequested FirstPage is greater than the number of pages in the file: ) print
pdfpagecount = flush
} if
} {
1
} ifelse
/LastPage where { pop LastPage pdfpagecount .min } { pdfpagecount } ifelse
1 index 1 index gt {
( No pages will be processed \(FirstPage > LastPage\).) = flush
} {
QUIET not {
(Processing pages ) print 1 index =only ( through ) print dup =only
(.) = flush
} if
} ifelse
} ifelse
} bind def
/dopdfpages { % firstpage# lastpage# dopdfpages -
<< /PDFScanRules //true >> setuserparams % set scanning rules for PDF vs. PS
<< /RenderTTNotdef systemdict
/RENDERTTNOTDEF get >> setuserparams % Should we render TT /.notdef
1 exch
{ dup /Page# exch store
QUIET not { (Page ) print dup //== exec flush } if
pdfgetpage pdfshowpage
} for
% Indicate that the number of spot colors is unknown in case the next page
% imaged is a PS file.
<< /PageSpotColors -1 >> .setpagedevice
<< /PDFScanRules //null >> setuserparams % restore scanning rules for PS
} bind def
/runpdfend {
Repaired { printrepaired } if
currentdict pdfclose
end % temporary dict
end % pdfdict
end % GS_PDF_ProcSet
PDFTopSave restore
end % userdict
2 vmreclaim % couldn't hurt
} bind def
% Copy stream to an external temporary file and
% return the file name as PS name.
/copy_embedded_file {
//true resolvestream % strm
dup 1023 string .peekstring pop % "1024 string" exceeds current %stdin buffer
dup length 400 ge { % Valid PDF file cannot be smaller than 400 bytes.
(%PDF-) search {
pop pop pop //true
} {
pop //false
} ifelse
} {
pop //false
} ifelse {
//null (w) /.tempfile % strm (name) null (w) /.tempfile
.systemvar exec % strm (name) file
3 -1 roll % (name) file strm
32768 string % (name) file strm (buf)
{ 3 copy readstring % (name) file strm (buf) file (data) bool
3 1 roll % (name) file strm (buf) bool file (data)
writestring % (name) file strm (buf) bool
not { exit } if
} loop
pop closefile % (name) file
closefile % (name)
cvn % /name
} {
closefile
} ifelse
} bind def
% Recursively enumerate /Names entries
% <node> pdf_collection_names /temp_file_name ...
/pdf_collection_names {
dup /Names knownoget {
exch pop
{ oforce
dup type /dicttype eq {
/EF knownoget {
/F knownoget {
copy_embedded_file
} if
} if
} {
pop
} ifelse
} forall
} {
/Kids knownoget {
{ oforce
dup //null ne {
pdf_collection_names
} {
pop
} ifelse
} forall
} if
} ifelse
} bind def
% Copy selected subfiles to temporary files and return the file names
% as a PostScript names to protect them from restore.
% Currently, all PDF files in the Portfolio are extracted and returned.
%
% - pdf_collection_files [ /temp_file_name ... /temp_file_name
/pdf_collection_files {
mark
Trailer /Root oget
dup /Collection oknown {
/Names knownoget {
/EmbeddedFiles knownoget {
pdf_collection_names
} if
} if
} {
pop
} ifelse
} bind def
/runpdf { % <file> runpdf -
//runpdfbegin exec
//pdf_collection_files exec
dup mark eq {
pop
process_trailer_attrs
//runpdfpagerange exec
//dopdfpages exec
//runpdfend exec
} {
//runpdfend exec
]
(1 ) 10 string copy exch
{
dup type /filetype eq {
//runpdfbegin exec
dup /PortfolioPage exch def
process_trailer_attrs
//runpdfpagerange exec
//dopdfpages exec
//runpdfend exec
closefile
} {
.namestring dup (r) file
//runpdfbegin exec
/PortfolioPage 2 index def
process_trailer_attrs
//runpdfpagerange exec
//dopdfpages exec
//runpdfend exec
deletefile
} ifelse
} forall
pop
} ifelse
} bind def
currentdict /pdf_collection_files .undef
end % systemdict
% Redefine the procedure that the C code uses for running piped input.
% It is OK to use { (%stdin) run } here, because a startjob cannot occur.
/.runstdin {
{ (%stdin) run } execute0
} bind def
end % userdict
pdfdict begin
% ======================== File parsing ======================== %
% Read the cross-reference and trailer sections.
/traileropdict mark
(<<) cvn { /dictlevelcount dictlevelcount 1 add store mark } bind
(>>) cvn { { .dicttomark } stopped {
( **** File has unbalanced >> in trailer.\n) pdfformaterror
} if
/dictlevelcount dictlevelcount 1 sub def
dictlevelcount 0 eq { exit } if
} bind
([) cvn { mark } bind % ditto
(]) cvn dup load
% /true true % see .pdfexectoken in pdf_base.ps
% /false false % ibid.
% /null null % ibid.
/R { /resolveR cvx 3 packedarray cvx } bind % see Objects below
.dicttomark readonly def
% After reading entry count: skip whitespace, exit on a digit
% (presumably the object offset, otherwise throw /syntaxerror
/xref-char-dict <<
0 {} % \000
9 1 index % \t
10 1 index % \r
12 1 index % \f
13 1 index % \n
32 1 index % ' '
48 { exit } bind % '0'
49 1 index % '1'
50 1 index % '2'
51 1 index % '3'
52 1 index % '4'
53 1 index % '5'
54 1 index % '6'
55 1 index % '7'
56 1 index % '8'
57 1 index % '9'
116 { % 't'railer
PDFfile 7 string .peekstring not { () } if
dup /trailer eq {
% Empty xref section
pop exit
} {
( **** Warning: bad string \() exch concatstrings
(\) follows xref section header.\n) concatstrings
pdfformaterror
/setxrefentry cvx /syntaxerror signalerror
} ifelse
} bind
>> readonly def
% Read original version (pre PDF 1.5) of the xref table.
% Note: The position is the location of 'xref'. The current PDFfile
% position is just after the 'XREF'.
/readorigxref % <pos> readorigxref <trailerdict>
{
pop % We do not need the position.
0 % Initialize xref table error counter
{ PDFfile token pop % first object # or trailer
dup /trailer eq { pop exit } if
PDFfile token pop % entry count
% remaining must be whitespace only (otherwise this xref Size was invalid.
{ PDFfile (0) .peekstring not { pop exit } if
0 get //xref-char-dict exch .knownget {
exec
} {
( **** Warning: xref subsection header has extra characters.\n)
pdfformaterror
/setxrefentry cvx /syntaxerror signalerror
} ifelse
PDFfile read { pop } { exit } ifelse
} loop
% This section might be adding new objects:
% ensure that Objects and Generations are big enough.
% stack: <err count> <first obj> <entry count>
2 copy add growPDFobjects
{ % stack: <err count> <obj num>
% Read xref line
PDFfile 20 string readstring pop % always read 20 chars.
token pop % object position
exch token pop % generation #
exch token pop % n or f
exch % stack: <err count> <obj#> <loc> <gen#> <tag> <remainder of line>
% check to make sure trailing garbage is just white space
//false 1 index { 32 gt or } forall {
6 -1 roll 1 add 6 1 roll % bump error count on garbage
dup (\n) search {
exch pop exch pop
} {
(\r) search {
exch pop exch pop
} if
} ifelse
length
PDFfile fileposition exch sub PDFfile exch setfileposition
} if
pop % Stack: <err count> <obj#> <loc> <gen#> <tag>
dup /n eq { % xref line tag is /n
pop % pop dup of line tag
1 index 0 eq {
( **** Warning: considering '0000000000 XXXXX n' as a free entry.\n)
pdfformaterror
} {
0 3 1 roll % Set ObjectStream object number = 0
//false setxrefentry % Save xref entry, don't change existing entries
3 -1 roll pop % Remove ObjectStream object onumber
} ifelse
}
{ % xref line tag was not /n
/f ne % verify that the tag was /f
{ /setxrefentry cvx /syntaxerror signalerror
} if
} ifelse
pop pop % pop <obj location> and <gen num>
% stack: <err count> <obj num>
1 add % increment object number
} repeat
pop % pop <obj #>
} loop
0 ne {
( **** Warning: length of some xref entries is not equal to 20 bytes.\n)
pdfformaterror
} if
/dictlevelcount 0 def
PDFfile traileropdict .pdfrun
} bind def
currentdict /xref-char-dict undef
% This dicitonary is used to read the xref dictionary. It should work for
% reading any dictionary. dictlevelcount must contain 0.
/xrefopdict mark
(<<) cvn { /dictlevelcount dictlevelcount 1 add def mark } bind
(>>) cvn { .dicttomark /dictlevelcount dictlevelcount 1 sub def
dictlevelcount 0 eq { exit} if } bind
([) cvn { mark } bind % ditto
(]) cvn dup load
% /true true % see .pdfexectoken in pdf_base.ps
% /false false % ibid.
% /null null % ibid.
/R { /resolveR cvx 3 packedarray cvx } bind % see Objects below
.dicttomark readonly def
% Get a variable length positive integer value from a stream. A value
% of zero is returned if the count is zero.
/getintn { % <stream> <count> getintn int
0 exch { 256 mul 1 index read pop add } repeat
exch pop % Discard stream
} bind def
% This array contains handlers for processing the different types of
% entries in the XRef stream.
% Stack: <Xrefdict> <xref stream> <Index array> <pair loc> <obj num>
% <field 2> <field 3>
% The handlers leave the stack unchanged.
/xref15entryhandlers [
{ % XRef entry type 0 - free or f type xref entry
% (free ) print
% (obj num: ) print 2 index pdfstring cvs print ( ) print
% (loc: ) print 1 index pdfstring cvs print ( ) print
% (gen: ) print dup === flush
} bind % Do nothing for free xref entries
% XRef entry type 1 - normal or n type xref entry
{ % field 2 = obj loc, field 3 = gen num
% (normal ) print
% (obj num: ) print 2 index pdfstring cvs print ( ) print
% (loc: ) print 1 index pdfstring cvs print ( ) print
% (gen: ) print dup === flush
0 3 1 roll % set stream number = 0
//false setxrefentry
3 -1 roll pop % remove stream number
} bind
% XRef entry type 2 - compressed object type xref entry
{ % field 2 = object stream num, field 3 = index into object stream
% (Compressed objects: ) print
% (obj num: ) print 2 index pdfstring cvs print ( ) print
% (field 2: ) print 1 index pdfstring cvs print ( ) print
% (field 3: ) print dup === flush
0 //false setxrefentry pop % set generation number = 0
} bind
] def
% Read the PDF 1.5 version of the xref table.
% Note: The position is the location of the start of the dictionary object
% In PDF 1.5, the XRef dictionary also serves as the trailer dictionary
/readpdf15xref % <pos> readpdf15xref <trailerdict>
{
/Classic-xref //false store
PDFfile exch setfileposition % move to start of object
% Get object number, revision, and 'obj' and discard
PDFfile token pop pop
PDFfile token pop pop
PDFfile token pop pop
% Get the XRef dicitionary
/dictlevelcount 0 def PDFfile xrefopdict .pdfrun
% Verify that we have an XRef dictionary
dup /Type get /XRef ne {
/readpdf15xref cvx /syntaxerror signalerror
} if
% Ensure that we we have room in the objects array, etc.
dup /Size get growPDFobjects
% Create a stream for the XRef data
PDFfile token pop pop % Skip over 'stream'
dup stream //false resolvestream
% Stack: <XRefdict> <xref stream>
% The Index array defines the ranges of object numbers in the
% XRef stream. Each value pair is consists of starting object
% number and the count of consecutive objects.
% Get the Index array, if present
1 index /Index .knownget not { % If no Index array ...
[ 0 3 index /Size get ] % Default = [ 0 Size ]
} if
% Loop through the Index array
0 2 2 index length 1 sub {
% Get start and end of object range
2 copy get % Start of the range
dup 3 index 3 index 1 add get % Number of entries in range
% Loop through the range of object numbers
add 1 sub 1 exch { % Form end of range, set increment = 1
% Stack: <Xrefdict> <xref stream> <Index array> <pair loc> <obj num>
% Get xref parameters. Note: The number of bytes for each parameter
% is defined by the entries in the W array.
4 index /W get aload pop % Get W array values
% The first field indicates type of entry. Get first field value.
% If the num. of bytes for field 1 is 0 then default field value is 1
3 -1 roll dup 0 eq { pop 1 } { 6 index exch getintn } ifelse
% Get the handler for the xref entry type. We will execute the
% handler after we get the other two field values.
xref15entryhandlers exch get
3 -1 roll 6 index exch getintn % Get second field
3 -1 roll 6 index exch getintn % Get third field
3 -1 roll exec % Execute Xref entry handler
pop pop pop % Remove field values and obj num
} for % Loop through Xref entries
pop % Remove Index array pair loc
} for % Loop through Index array entries
pop pop % Remove Index array and xref stream
} bind def
% Read the cross-reference table.
% <pos> is the position either from the startxref statement or the /Prev
% entry in the prior trailer dictionary.
/readxref % <pos> readxref <trailerdict>
{
PDFoffset add PDFfile exch
% Check that the given location is within the file.
dup PDFfilelen gt {
( **** Warning: Specified xref location is beyond end of file.\n)
pdfformaterror
/readxref cvx /invalidaccess signalerror
} if
setfileposition
% In some PDF files, this position actually points to
% white space before the xref line. Skip over this here.
{
PDFfile fileposition PDFfile read pop 32 gt { exit } if pop
} loop
dup % Make copy of the file position (before last char was read).
PDFfile exch setfileposition
% The PDF specification says that the 'xref' must be on a line
% by itself. The code here formerly used readline and linene to
% check this. However, Acrobat Reader only requires the line to
% begin with 'xref', and there are enough applications producing
% non-compliant PDF files that we have to do this too.
PDFfile pdfstring 0 4 getinterval readstring pop
(xref) eq
{
readorigxref % 'xref' -> original xref table
% if hybrid-reference PDF, also fetch the entries
% found in the XRef stream pointed by /XRefStm
dup /XRefStm knownoget {
readpdf15xref pop
} if
}
{ readpdf15xref } % otherwise assume PDF 1.5 xref stream
ifelse
} bind def
% Open a PDF file and read the header, trailer, and cross-reference.
/pdfopen { % <file> pdfopen <dict>
% Color space substitution in PDF is handled somewhat differently
% than in PostScript. A given device color space will be substituted
% if the corresponding "Default..." entry exists in the Page's
% Resource dictionary (which might be inhereted); there is no
% UseCIEColor to enable/disable color mapping.
%
% This behavior is achieved by always setting UseCIEColor to true
% in the page device dictionary. If the value of this parameter was
% originally false (i.e.: the output device does not perform color
% space substitution by default), the instances DefaultGray,
% DefaultRGB, and DefaultCMYK of the (local) ColorSpace category
% are redefined to be DeviceGray, DeviceRGB, and DeviceCMYK,
% respectively. This is not done if UseCIEColor is true by default,
% as in that case color substitution is presumably desired even
% if the file does not request it.
currentpagedevice /UseCIEColor .knownget dup { pop } if not
{ .currentglobal //false .setglobal
/DefaultGray { /DeviceGray } cvlit /ColorSpace defineresource pop
/DefaultRGB { /DeviceRGB } cvlit /ColorSpace defineresource pop
/DefaultCMYK { /DeviceCMYK } cvlit /ColorSpace defineresource pop
.setglobal
}
if
pdfopenfile begin
pdfopencache
currentdict end
} bind def
/process_trailer_attrs { % - process_trailer_attrs -
writeoutputintents
.writepdfmarks {
% Copy bookmarks (outline) to the output.
Trailer /Root oget /Outlines knownoget {
/First knownoget {
{ dup writeoutline /Next knownoget not { exit } if } loop
} if
} if
} if % end .writepdfmarks
% Initialize OC groups
Trailer /Root oget /OCProperties knownoget {
% By default, OCGs are 'on'; mark only 'off' OCGs.
% If, contrary to the spec, BaseState is OFF, mark all OCGs
% and unmark ON ones. Bug 691491.
dup /OCGs knownoget not { {} } if exch
/D knownoget {
dup /BaseState knownoget { /OFF eq } { //false } ifelse {
( **** Warning: Default viewing OC config dictionary has /BaseState /OFF\n)
pdfformaterror
1 index {
oforce dup type /dicttype eq {
/OFF 0 put
} {
pop
} ifelse
} forall
/ON knownoget {
{ oforce dup type /dicttype eq {
/OFF undef
} {
pop
} ifelse
} forall
} if
} {
/OFF knownoget {
{ oforce dup type /dicttype eq {
/OFF 0 put
} {
pop
} ifelse
} forall
} if
} ifelse
} if
pop
} if
% Enumerate all AcroForm fielda and link all separate widgets
% to the parent field.
Trailer /Root oget /AcroForm knownoget {
dup /NeedAppearances knownoget not { //false } if {
/NeedAppearances //true def
dup
/Fields knownoget {
{ oforce
link_widget_annots
pop
} forall
} if
pop
} {
pop
} ifelse
} if
% Use OutputIntent ICC profile
systemdict /UsePDFX3Profile .knownget {
dup //false eq {
pop
} {
dup //true eq { pop 0 } if
dup type /integertype eq {
Trailer /Root oget /OutputIntents knownoget {
dup length 2 index le % i [] bool
2 index 0 lt or {
pop pop
(Source file has no OutputIntent with this number.\n)
} {
exch oget dup type /dicttype ne { pop << >> } if
/DestOutputProfile knownoget {
[ /ICCBased 3 -1 roll ] ICCBased-resolve
1 get .set_outputintent
()
} {
(This OutputputIntents dictionary has no profile.\n)
} ifelse
} ifelse
} {
pop (File has no /OutputIntents attribute\n)
} ifelse
} {
pop (UsePDFX3Profile must be a boolean or an integer.\n)
} ifelse
dup () eq {
pop
} {
( **** ) stderrprint stderrprint
} ifelse
} ifelse
} if
} bind def
% Verify that each entry in the xref table is pointing at an object with
% the correct object number and generation number.
/verify_xref % - verify_xref -
{ PDFfilelen
1 1 Objects llength 1 sub % stack: filesize 1 1 <number of objects - 1>
{ % Check if the object is free (i.e. not used). The values in
% Generations is the generation number plus 1. If the value in
% Generations is zero then the object is free.
% Stack: <filesize> <obj num>
Generations 1 index lget % Get the genration number
0 ne { % Skip if object number is free
ObjectStream 1 index lget % Check if object is in objectstream
0 eq { % We only check objects not in an objectstream
{ % Use stop context since we may get an error if object is invalid
dup Objects exch lget % Get the object location
PDFoffset add dup 3 index ge % Compare object location to file size
{ pop //true } % Rebuild if location not in file
{ PDFfile exch setfileposition % Go to the object location
//true % Stack: <filesize> <obj num> <true>
PDFfile token pop % Read object number from file
2 index eq { % Verify object number
PDFfile token pop % Read generation number from file
Generations 3 index % Get specified generaton number
lget 1 sub % Gen numbs are stored with 1 added.
eq { % Verify generation number
PDFfile token pop
/obj eq { % Verify 'obj' text
pop //false % We have valid object, do not rebuild
} if
} if
} if
} ifelse
} .internalstopped
{ //true } if % If we stop then we need to rebuild
% Stack: <filesize> <obj num> <need rebuild flag>
{
( **** Warning: File has an invalid xref entry: )
pdfformaterror
pdfstring cvs pdfformaterror
(. Rebuilding xref table.\n) pdfformaterror
search_objects
exit
} if % If the entry is invalid
} {
% The object is in an object stream. We currently do not rebuild
% objects in an object stream. So If we find one, then abort the
% verification of the xref table entries.
pop exit % Pop object number and then exit loop
} ifelse % If not in an object stream
} if % If object entry is not free
pop % Remove object number
} for
pop % Remove the size of the file
} bind odef
/pdfopencache { % - pdfopencache -
% Create and initialize some caches.
/PageCount pdfpagecount def
/PageNumbers PageCount 65534 .min dict def
/PageIndex PageCount 65534 .min array def
} bind def
/pdfopenfile { % <file> pdfopenfile <dict>
pdfdict readonly pop % can't do it any earlier than this
31 dict begin
/LocalResources 0 dict def
/DefaultQstate //null def % establish binding
/Printed where { pop } {
% Guess whether the output device is a printer.
/Printed currentpagedevice /OutputFile known def
} ifelse
/PSLevel1 where { pop } { /PSLevel1 //false def } ifelse
% NB: PDFfile is used outside of the PDF code to determine that a
% PDF job is being processed; to not change or hide this key.
cvlit /PDFfile exch def
/PDFsource PDFfile def
/Repaired //false def
/NeedAppearances //false def
currentglobal //true .setglobal globaldict begin
/UndefProcList 0 dict def
end .setglobal
PDFfile dup 0 setfileposition
0 () /SubFileDecode filter % to avoid file closure
pdfstring readstring pop
(%PDF-) search not {/pdfopen cvx /syntaxerror signalerror} if
length /PDFoffset exch def pop
% some badly formed PDF's (Visioneer) have something other than EOL
% after the version number. If we get an error, shorten the string
% and try again.
//false exch % error encountered
{ { cvr } stopped
{ exch pop //true exch 0 1 index length 1 sub dup 0 eq
{ pop 0 exit } if % exit if string now empty
getinterval % trim character from right end and retry
}
{ exch {
( **** Warning: PDF version number not followed by EOL.\n)
pdfformaterror
}
if exit
}
ifelse
} loop
/Classic-xref //true def
/PDFversion exch def
% Read the last cross-reference table.
count /pdfemptycount exch def
/Trailer << >> def % Initialize to an emptry dict.
{ initPDFobjects findxref readxref } .internalstopped {
recover_xref_data % Read failed. Attempt to recover xref data.
search_trailer % Search for the primary trailer
} {
/Trailer exch def % Save trailer dict after first xref table
% Read any previous cross-reference tables. When we are done,
% verify that the entries in the xref tables are valid if NoVerifyXref
% is not defined.
Trailer
{ /Prev knownoget not { % If no previous xref table then ...
Classic-xref {
/NoVerifyXref where { pop } { verify_xref } ifelse
} if
exit
} if
{ readxref } .internalstopped {
recover_xref_data % Read failed. Attempt to recover xref data.
exit % Exit loop since recover gets all obj data.
} if % If readxref stopped
% The PDF spec. says that each trailer dict should contain the required
% entries. However we have seen a PDF file that only has a Prev entry in
% the initial trailer dict. Acrobat complains but it accepts these files.
% To work with these files, we are copying any entries which we find in
% a previous trailer dict which are not present in the initial dict.
dup {
Trailer 2 index known {
pop pop % discard if key already present
} {
Trailer 3 1 roll put % add key if not present
} ifelse
} forall
} loop % Loop to previous trailer
} ifelse % Ifelse readxref stopped
/NumObjects Objects llength def % To check that obj# < NumObjects
% Scan numbers in the range 2147483648..4294967295 in Encrypt dictionary
% as unsigned integers for compatibility with Acrobat Reader. Bug 689010.
<< /PDFScanUnsigned //true >> setuserparams
{ Trailer /Encrypt knownoget {
pop
pdf_process_Encrypt % signal error
} if
} stopped
<< /PDFScanUnsigned //false >> setuserparams
{ stop } if
% Check for recursion in the page tree. Bug 689954, MOAB-06-01-2007
verify_page_tree
currentdict end
} bind def
% Look for the last (startxref) from the current position
% of the file. Return the position after (startxref) if found or -1 .
/find-startxref { % <file> find_eof <file> <position>
-1
{ 1 index dup 0 (startxref) /SubFileDecode filter flushfile
bytesavailable 9 lt { exit } if
pop dup fileposition
} loop
} bind def
% Search for the last 'startxfer' and read a following token, which
% must be a number. Don't pay any attention to %%EOF because it's
% often mangled.
% There seems to be no limit on the amount of garbage that can be
% appended to the PDF file. Current record (60K) belongs to
% PDF-Out (v 2.0 - 35). We start the search from the last 1024
% bytes and continue from the beginning of the file.
/findxref { % - findxref <xrefpos>
PDFfile dup dup dup 0 setfileposition bytesavailable
dup /PDFfilelen exch def
% Find the last %%EOF string (within 1024 bytes)
1024 sub PDFoffset .max
setfileposition find-startxref % file pos|-1 % search the last 1024 bytes
dup 0 le {
pop
dup PDFoffset setfileposition find-startxref % search from the beginnibg
dup 0 le {
( **** Error: Cannot find a 'startxref' anywhere in the file.\n)
pdfformaterror
/findxref cvx /syntaxerror signalerror
} if
} if
2 copy setfileposition
pop token not { //null } if
dup type /integertype ne {
( **** Error: invalid token after startxref.\n) pdfformaterror
/findxref cvx /syntaxerror signalerror
} if
} bind def
/stderrfile (%stderr) (w) file def
/stderrprint { % <string> stderrprint -
//stderrfile dup 3 -1 roll writestring flushfile
} bind def
/pdfformaterror { % <string> pdfformaterror -
stderrprint
/Repaired //true store
} bind def
/knownoget_safe
{ 2 copy knownoget { 3 1 roll pop pop //true } { pop pop //false } ifelse
} odef
/printProducer {
Trailer /Info { knownoget_safe } stopped { pop pop //false } if {
/Producer knownoget not { //null } if
} {
//null
} ifelse
dup //null eq {
pop
} {
( **** The file was produced by: \n **** >>>> ) stderrprint
% Handle a Unicode Producer.
(\376\377) anchorsearch {
pop dup length 2 idiv string 0 1 2 index length 1 sub {
% Stack: origstr newstr i
1 index exch 3 index 1 index 2 mul 1 add get put
} for exch pop
} if
stderrprint
( <<<<\n) stderrprint
} ifelse
} bind def
% The UndefProcList collects noisy warnings.
% This gets rid of many multiple warnings from pdf_font.ps
/printCollectedWarnings {
UndefProcList length 0 gt {
(\n **** Embedded font uses undefined procedure\(s\): ) stderrprint
UndefProcList {
exch .namestring stderrprint ( ) stderrprint
=string cvs stderrprint ( times, ) stderrprint
} forall
(\n) stderrprint
} if
} bind def
/printrepaired {
printCollectedWarnings
(\n **** This file had errors that were repaired or ignored.\n)
stderrprint
printProducer
( **** Please notify the author of the software that produced this\n)
stderrprint
( **** file that it does not conform to Adobe's published PDF\n)
stderrprint
( **** specification.\n\n)
stderrprint
} bind def
% Write the outline structure for a file. Uses linkdest (below).
% omit links to pages that don't exist.
/writeoutline % <outlinedict> writeoutline -
{ mark
0 2 index /First knownoget
{ { exch 1 add exch /Next knownoget not { exit } if } loop }
if
% stack: dict mark count
dup 0 eq
{ pop 1 index }
{ 2 index /Count knownoget { 0 lt { neg } if } if
/Count exch 3 index
}
ifelse
{
dup /A knownoget {
dup /URI known {
/A mark 3 2 roll % <<>> /A [ <<action>>
{ oforce } forall
.dicttomark
3 2 roll
} {
dup /D knownoget {
exch pop exch dup length dict copy dup /Dest 4 -1 roll put
} {
/N knownoget { % Assume /S /Named
namedactions exch .knownget { exec } if
} if
} ifelse
} ifelse
} if
linkdest
} stopped
{
cleartomark % ignore this link
( **** Warning: Outline has invalid link that was discarded.\n)
pdfformaterror
} {
/Title knownoget {
/Title exch /OUT pdfmark
} {
cleartomark
( **** Warning: Outline without /Title attribute was discarded.\n)
pdfformaterror
} ifelse
}
ifelse
/First knownoget
{ { dup writeoutline /Next knownoget not { exit } if } loop }
if
} bind def
% Close a PDF file.
/pdfclose % <dict> pdfclose -
{ begin
PDFfile closefile
end
} bind def
% ======================== Page accessing ======================== %
% Get a (possibly inherited) attribute of a page.
/pget % <pagedict> <key> pget <value> -true-
% <pagedict> <key> pget -false-
{
2 copy knownoget
{ exch pop exch pop //true }
{ exch /Parent knownoget
{ exch pget }
% finally see if the key is (misplaced) in the Root Catalog dict
{ dup Trailer /Root oget exch knownoget dup {
3 -1 roll ( **** Warning: The /) pdfformaterror 50 string cvs pdfformaterror
( key is missing from the Page tree.\n) pdfformaterror
}
{ exch pop }
ifelse
}
ifelse
}
ifelse
} bind def
% Get the value of a resource on a given page.
/rget { % <resname> <pagedict> <restype> rget <value> -true-
% <resname> <pagedict> <restype> rget -false-
LocalResources 1 index knownoget {
dup type /dicttype eq {
3 index knownoget
} {
//false exch {
4 index knownoget {
exch not exit
} if
} forall
} ifelse
} {
//false
} ifelse {
exch pop exch pop exch pop //true
} {
exch /Resources pget {
exch knownoget { % /Name [<<>> ...]
dup type /dicttype eq {
exch knownoget
} {
% GS uses array of dicts if resources don't fit in one dict.
//false 3 1 roll { % false /Name <<>>
1 index knownoget { % false /Name val
exch pop exch not % i.e. true
0 exit
} if
} forall
pop
} ifelse
} {
pop //false
} ifelse
} {
pop pop //false
} ifelse
} ifelse
} bind def
% Get the total number of pages in the document.
/pdfpagecount % - pdfpagecount <int>
{ Trailer /Root oget /Pages oget
dup /Count knownoget {
dup type /integertype eq { dup 0 le } { //true } ifelse {
pop
dup /Kids knownoget {
pop
( **** Warning: Invalid Page count.\n) pdfformaterror
% find the last page and use that as the Count
1 1 999999999 {
dup pdffindpage?
exch pop
//null eq { exit } { pop } ifelse
} for
1 sub % decrement to last page that we were able to find
2 copy /Count exch put
} {
0 % return 0 and keep 0 page count.
( **** Warning: PDF document has no pages.\n) pdfformaterror
} ifelse
} if
exch pop
} {
dup /Type oget /Page eq {
<< exch 1 array astore /Kids exch /Count 1 /Type /Pages >>
Trailer /Root oget /Pages 3 -1 roll put
1
( **** Warning: No /Pages node. The document root directly point a page.\n)
pdfformaterror
} {
( **** Warning: Page count not found; assuming 1.\n)
pdfformaterror
pop 1
} ifelse
} ifelse
} bind def
% Check for loops in the 'page tree' but accept an acyclic graph.
% - verify_page_tree -
/verify_page_tree {
Trailer /Root oget /Pages oget
10 dict begin
/verify_page_tree_recursive {
dup 1 def
dup /Kids knownoget {
{ oforce
currentdict 1 index known {
( **** Error: there's a loop in the page tree. Giving up.\n) pdfformaterror
/verify_page_tree cvx /syntaxerror signalerror
} if
verify_page_tree_recursive
} forall
} if
currentdict exch undef
} def
verify_page_tree_recursive
end
} bind def
/pdffindpage? { % <int> pdffindpage? 1 null (page not found)
% <int> pdffindpage? 1 noderef (page found)
% <int> pdffindpage? 0 null (Error: page not found)
Trailer /Root oget /Pages get
{ % We should be able to tell when we reach a leaf
% by finding a Type unequal to /Pages. Unfortunately,
% some files distributed by Adobe lack the Type key
% in some of the Pages nodes! Instead, we check for Kids.
dup oforce /Kids knownoget not { exit } if
exch pop //null
0 1 3 index length 1 sub {
2 index exch get
dup oforce dup /Kids known { /Count oget } { pop 1 } ifelse
% Stack: index kids null noderef count
dup 5 index ge { pop exch pop exit } if
5 -1 roll exch sub 4 1 roll pop
} for exch pop
% Stack: index null|noderef
dup //null eq { pop pop 1 //null exit } if
} loop
} bind def
% Find the N'th page of the document by iterating through the Pages tree.
% The first page is numbered 1.
/pdffindpageref { % <int> pdffindpage <objref>
dup pdffindpage?
% Stack: index countleft noderef
1 index 1 ne { pop pop /pdffindpage cvx /rangecheck signalerror } if
exch pop
PageIndex 2 index 1 sub 65533 .min 2 index oforce put
PageNumbers 1 index oforce 3 index dup 65534 le
{ put }
{ pop pop pop } % don't store more than 65534 pagenumbers
ifelse
exch pop
} bind def
/pdffindpage { % <int> pdffindpage <pagedict>
pdffindpageref oforce
} bind def
% Find the N'th page of the document.
% The first page is numbered 1.
/pdfgetpage % <int> pdfgetpage <pagedict>
{ PageIndex 1 index 1 sub dup 65533 lt
{ get }
{ pop pop //null }
ifelse
dup //null ne
{ exch pop oforce }
{ pop pdffindpage }
ifelse
} bind def
% Find the page number of a page object (inverse of pdfgetpage).
/pdfpagenumber % <pagedict> pdfpagenumber <int>
{ % We use the simplest and stupidest of all possible algorithms....
PageNumbers 1 index .knownget
{ exch pop
}
{ 1 1 PageCount 1 add % will give a rangecheck if not found
{ dup pdfgetpage oforce 2 index eq { exit } if pop
}
for exch pop
}
ifelse
} bind def
% Arrange the four elements that define a rectangle into a 'normal' order.
/normrect_elems % <x1> <y1> <x2> <y2> normrect_elems <llx> <lly> <urx> <ury>
{
exch 4 1 roll % <x2> <x1> <y1> <y2>
2 copy gt { exch } if % <x2> <x1> <lly> <ury>
4 2 roll 2 copy lt { exch } if % <lly> <ury> <urx> <llx>
4 1 roll exch % <llx> <lly> <urx> <ury>
} bind def
% Arrange a rectangle into a 'normal' order. I.e the lower left corner
% followed by the upper right corner.
/normrect % <rect> normrect <rect>
{
aload pop normrect_elems 4 array astore
} bind def
/fix_empty_rect_elems % </Name> <x1> <y1> <x2> <y2> fix_empty_rect_elems <x1> <y1> <x2'> <y2'>
{ dup 3 index eq { //true } { 1 index 4 index eq } ifelse {
pop pop pop pop
( **** Warning: File has an empty ) pdfformaterror pdfstring cvs pdfformaterror
(. Using the current page size instead.\n) pdfformaterror
0 0 currentpagedevice /PageSize get aload pop
} {
5 -1 roll pop
} ifelse
} bind def
/boxrect % <llx> <lly> <urx> <ury> boxrect <x> <y> <w> <h>
{ exch 3 index sub exch 2 index sub
} bind def
/resolvedest { % <name|string|other> resolvedest <other|null>
dup type /nametype eq {
Trailer /Root oget /Dests knownoget {
exch knownoget not { //null } if
} {
pop //null
} ifelse
} {
dup type /stringtype eq {
Trailer /Root oget /Names knownoget {
/Dests knownoget {
exch nameoget
} {
pop //null
} ifelse
} {
pop //null
} ifelse
} if
} ifelse
} bind def
% Procedures to do the necessary transformations of view destinations
% <PDF2PS_matrix> <rot> <view> -- <view'>
/viewdestprocs 8 dict dup begin
/Fit { exch pop exch pop } bind def
/FitH {
aload pop
0 4 -1 roll 1 and 0 eq { exch } if
4 -1 roll transform exch pop
2 array astore
} bind def
/FitV {
aload pop
0 4 -1 roll 1 and 0 ne { exch } if
4 -1 roll transform pop
2 array astore
} bind def
/FitB /Fit load def
/FitBH /FitH load def
/FitBV /FitV load def
/XYZ {
aload pop
3 1 roll
2 copy 7 -1 roll 1 and 0 ne { exch } if 4 2 roll % odd rotation switches x<->y
2 { dup //null eq { pop 0 } if exch } repeat % replace nulls with 0
7 -1 roll transform % transform coordinates
2 { 3 -1 roll //null eq { pop //null } if exch } repeat % put the nulls back
3 -1 roll
4 array astore
} bind def
/FitR {
exch pop
aload pop
2 { 5 index transform 4 2 roll } repeat normrect_elems
5 array astore
exch pop
} bind def
end readonly def
/linkdest { % <link|outline> linkdest
% ([/Page <n>] /View <view> | ) <link|outline>
dup /Dest knownoget
{ resolvedest
dup type /dicttype eq { /D knownoget not { //null } if } if
dup //null eq
{ pop }
{ dup 0 oget
//false % don't have a page# and transformation matrix (yet)
1 index type /dicttype eq {
1 index /Type knownoget {
/Page eq {
pop % the "false" flag
dup pdf_cached_PDF2PS_matrix exch
dup /Rotate pget not { 0 } if 90 idiv exch
pdfpagenumber
/FirstPage where {pop dup FirstPage lt {/rangecheck signalerror} if} if
/LastPage where {pop dup LastPage gt {/rangecheck signalerror} if} if
//true % now we have a page# and a transformation matrix
} if
} if
} if
% stack: <link|outline> <dest> ( <PDF2PS_matrix> <rot> <page#> true | <page> false )
{
/Page exch 6 2 roll
% stack: [/Page <page#>] <link|outline> <dest> <PDF2PS_matrix> <rot>
3 -1 roll dup length 1 sub 1 exch getinterval /View 4 1 roll
% stack: [/Page <page#>] <link|outline> /View <PDF2PS_matrix> <rot> <view>
//viewdestprocs 1 index 0 get get exec
3 -1 roll
} {
dup type /integertype eq {
/Page exch 1 add 4 2 roll
} {
pop
} ifelse
dup length 1 sub 1 exch getinterval /View exch 3 -1 roll
} ifelse
}
ifelse
}
if
} bind def
% <pagedict> mark ... -proc- <page#> <error>
/namedactions 8 dict dup begin
/FirstPage { 1 //false } def
/LastPage { pdfpagecount //false } def
/NextPage { counttomark 2 add index pdfpagenumber 1 add dup pdfpagecount gt } bind def
/PrevPage { counttomark 2 add index pdfpagenumber 1 sub dup 1 lt } bind def
end readonly def
% <pagedict> <annotdict> -proc- -
/annottypes 5 dict dup begin
/Text {
mark exch
{ /Rect /Open /Contents }
{ 2 copy knownoget { 3 -1 roll } { pop } ifelse }
forall pop /ANN pdfmark
} bind def
/Link {
mark exch
dup /BS knownoget { << exch { oforce } forall >> /BS exch 3 -1 roll } if
dup /F knownoget { /F exch 3 -1 roll } if
dup /C knownoget { /Color exch 3 -1 roll } if
dup /Rect knownoget { /Rect exch 3 -1 roll } if
dup /Border knownoget {
dup type /arraytype eq {
dup length 3 lt
} {
//true
} ifelse {
pop [ 0 0 0 ] % Following AR5 use invisible border.
} if
/Border exch 3 -1 roll
} if
dup /A knownoget {
dup /URI known {
/A mark 3 2 roll % <<>> /A [ <<action>>
{ oforce } forall
.dicttomark
3 2 roll
} {
dup /D knownoget {
exch pop exch dup length dict copy dup /Dest 4 -1 roll put
} {
/N knownoget { % Assume /S /Named
namedactions exch .knownget {
exec {
pop
( **** Warning: Ignoring a named action pointing out of the document page range.\n)
pdfformaterror
} {
/Page exch 3 -1 roll
} ifelse
} if
} if
} ifelse
} ifelse
} if
{ linkdest } stopped {
cleartomark
( **** Warning: Link annotation points out of the document page range.\n)
pdfformaterror
} {
pop /LNK pdfmark
} ifelse
} bind def
end readonly def
% **** The following procedure should not be changed to allow clients
% **** to directly interface with the constituent procedures. GSview
% **** and some Artifex customers rely on the pdfshowpage_init,
% **** pdfshowpage_setpage, pdfshowpage_finish so all logic should be
% **** implemented in one of those three procedures.
/pdfshowpage % <pagedict> pdfshowpage -
{ dup /Page exch store
pdfshowpage_init
pdfshowpage_setpage
pdfshowpage_finish
} bind def
/pdfpagecontents % <pagedict> pdfpagecontents <contents>
{ } bind def
/pdfshowpage_init % <pagedict> pdfshowpage_init <pagedict>
{ /DSCPageCount DSCPageCount 1 add store
} bind def
/get_media_box { % <pagedict> get_media_box <box> <bool>
/MediaBox pget {
oforce_array //true
} {
( **** Page has no /MediaBox attribute. Using the current page size.\n)
pdfformaterror
[ 0 0 currentpagedevice /PageSize get aload pop ] //false
} ifelse
} bind def
/get_any_box { % <pagedict> get_any_box <box name> <box>
//systemdict /UseTrimBox .knownget dup { and } if {
dup /TrimBox pget {
/TrimBox exch
} if
} if
dup type /arraytype ne {
//systemdict /UseCropBox .knownget dup { and } if {
dup /CropBox pget {
/CropBox exch
} if
} if
} if
dup type /arraytype ne {
/MediaBox exch get_media_box pop
} {
oforce_elems % <<pdict>> /SomeBox x0 y0 x1 y1
6 -1 roll get_media_box { % /SomeBox x0 y0 x1 y1 [MediaBox]
aload pop % /SomeBox x0 y0 x1 y1 X0 Y0 X1 Y1
5 -1 roll .min exch % /SomeBox x0 y0 x1 X0 Y0 mY1 X1
5 -1 roll .min exch % /SomeBox x0 y0 X0 Y0 mX1 mY1
4 2 roll % /SomeBox x0 y0 mX1 mY1 X0 Y0
5 -1 roll .max exch % /SomeBox x0 mX1 mY1 mY0 X0
5 -1 roll .max exch % /SomeBox mX1 mY1 mX0 mY0
4 2 roll % /SomeBox mX0 mY0 mX1 mY1
} {
pop
} ifelse
4 array astore % /SomeBox [mX0 mY0 mX1 mY1]
} ifelse
} bind def
% Compute the matrix that transforms the PDF->PS "default" user space
/pdf_PDF2PS_matrix { % <pdfpagedict> -- matrix
matrix currentmatrix matrix setmatrix exch
% stack: savedCTM <pdfpagedict>
dup get_any_box
% stack: savedCTM <pdfpagedict> /Trim|Crop|MediaBox <Trim|Crop|Media Box>
oforce_elems normrect_elems fix_empty_rect_elems 4 array astore
//systemdict /PDFFitPage known {
PDFDEBUG { (Fiting PDF to imageable area of the page.) = flush } if
currentpagedevice /.HWMargins get aload pop
currentpagedevice /PageSize get aload pop
% Adjust PageSize and .HWMargins for the page portrait/landscape orientation
2 copy gt % PageSize_is_landscape
7 index aload pop 3 -1 roll sub 3 1 roll exch sub exch
10 index /Rotate pget not { 0 } if 90 idiv 1 and 0 ne { exch } if
gt % Box_is_landscape
ne {
1 index 0 translate 90 rotate % add in a rotation
2 copy ne {
% rotate the .HWMargins
2 copy lt {
6 2 roll 4 -1 roll 6 -2 roll
} {
6 2 roll 4 1 roll 6 -2 roll
} ifelse
% rotate the page dimensions
exch
} if
} if
3 -1 roll sub 3 1 roll exch sub exch
% stack: savedCTM <pdfpagedict> <Crop|Media Box> Xmin Ymin Xmax Ymax
PDFDEBUG { ( Translate up by [ ) print 3 index =print (, ) print 2 index =print ( ]) = flush } if
3 index 3 index translate % move origin up to imageable area
2 index sub exch 3 index sub exch 4 2 roll pop pop
% stack: savedCTM <pdfpagedict> [Box] XImageable YImageable
2 index aload pop 2 index sub exch 3 index sub exch 4 2 roll pop pop
5 index /Rotate pget not { 0 } if 90 idiv 1 and 0 ne { exch } if
% stack: savedCTM <pdfpagedict> [Box] XImageable YImageable XBox YBox
4 copy
3 -1 roll exch div 3 1 roll div .min
% stack: savedCTM <pdfpagedict> [Box] XImageable YImageable XBox YBox scale
PDFDEBUG { ( Scale by ) print dup = flush } if
5 -4 roll
% stack: savedCTM <pdfpagedict> [Box] scale XImageable YImageable XBox YBox
3 index 2 index 6 index mul sub 2 div 3 index 2 index 7 index mul sub 2 div
PDFDEBUG { ( Centering translate by [ ) print 1 index =print (, ) print dup =print ( ]) = flush } if
translate pop pop pop pop
} {
//systemdict /NoUserUnit .knownget not { //false } if {
1
} {
1 index /UserUnit knownoget {
PDFDEBUG { (Scaling due to UserUnit by ) print dup = flush } if
} {
1
} ifelse
} ifelse
} ifelse
% stack: savedCTM <pdfpagedict> [Box] scale
dup scale
% Rotate according to /Rotate
aload pop boxrect
{
{ pop pop }
{ -90 rotate pop neg 0 translate }
{ 180 rotate neg exch neg exch translate }
{ 90 rotate neg 0 exch translate pop }
}
5 index /Rotate pget not { 0 } if
PDFDEBUG { dup 0 ne { (Rotating by ) print dup =print ( degrees.) = flush } if } if
90 idiv 3 and get exec
% Now translate to the origin given in the Crop|Media Box
exch neg exch neg translate
% stack: savedCTM <pdfpagedict>
pop
matrix currentmatrix exch setmatrix
} bind def
% Cache the matrix that transforms the PDF->PS "default" user space
% into <pdfpagedict> under the key //PDF2PS_matrix_key, then return it
/PDF2PS_matrix_key (PDF->PS matrix) cvn def
/pdf_cached_PDF2PS_matrix { % <pdfpagedict> -- <PDF2PS_matrix>
dup //PDF2PS_matrix_key .knownget {
exch pop
} {
dup dup pdf_PDF2PS_matrix //PDF2PS_matrix_key exch put
//PDF2PS_matrix_key get
} ifelse
} bind def
currentdict /PDF2PS_matrix_key undef
/.pdfshowpage_Install { % <pagedict> [<prevproc>] .pdfshowpage_Install -
0 get exec
pdf_cached_PDF2PS_matrix concat
} bind def
/pdfshowpage_setpage { % <pagedict> pdfshowpage_setpage <pagedict>
6 dict begin % for setpagedevice
% Stack: pdfpagedict
% UseCIEColor is always true for PDF; see the comment in runpdf above
/UseCIEColor //true def
/Orientation 0 def
currentpagedevice
% Stack: pdfpagedict currentpagedevicedict
1 index get_any_box
% Stack: pdfpagedict currentpagedevicedict /BoxName [box]
oforce_elems normrect_elems fix_empty_rect_elems boxrect 4 2 roll pop pop
3 index /Rotate pget not { 0 } if 90 idiv 1 and 0 ne { exch } if
% stack: pdfpagedict currentpagedevicedict boxwidth boxheight
//systemdict /PDFFitPage known {
% Preserve page size,
% but choose portrait/landscape depending on box width:height ratio
% (if box width == height, select portrait orientation)
gt
1 index /PageSize get aload pop
2 copy gt
4 -1 roll ne { exch } if
} {
% Set the page size.
//systemdict /NoUserUnit .knownget not { //false } if not {
3 index /UserUnit knownoget {
dup 4 -1 roll mul 3 1 roll mul
} if
} if
} ifelse
2 array astore /PageSize exch def
% Determine the number of spot colors used on the page. Note: This searches
% the pages resources. It may be high if a spot color is in a resource but
% is not actually used on the page.
/PageSpotColors 2 index countspotcolors def
% Let the device know if we will be using PDF 1.4 transparency.
% The clist logic may need to adjust the size of bands.
1 index pageusestransparency /PageUsesTransparency exch def
dup /Install .knownget {
% Don't let the Install procedure get more deeply
% nested after every page.
dup type dup /arraytype eq exch /packedarraytype eq or {
dup length 4 eq {
dup 2 get /.pdfshowpage_Install load eq {
1 get 0 get % previous procedure
} if
} if
} if
} {
{ }
} ifelse 1 array astore
2 index exch /.pdfshowpage_Install load /exec load
4 packedarray cvx
% Stack: pagedict currentpagedict installproc
/Install exch def
% Stack: pagedict currentpagedict
pop currentdict end setpagedevice
} bind def
/.free_page_resources { % - .free_page_resources -
Page /Resources pget {
/Shading knownoget {
{ {
dup type /dicttype eq {
dup /.shading_dict known {
dup /.shading_dict undef
} if
} if
pop pop
} forall
} big-res-forall
} if
} if
} bind def
/pdfshowpage_finish { % <pagedict> pdfshowpage_finish -
save /PDFSave exch store
/PDFdictstackcount countdictstack store
(before exec) VMDEBUG
% set up color space substitution (this must be inside the page save)
pdfshowpage_setcspacesub
.writepdfmarks {
% Copy the crop box.
dup /CropBox pget {
% .pdfshowpage_Install transforms the user space -
% do same here with the CropBox.
oforce_elems
2 { Page pdf_cached_PDF2PS_matrix transform 4 2 roll } repeat
normrect_elems /CropBox 5 1 roll fix_empty_rect_elems 4 array astore
mark /CropBox 3 -1 roll
/PAGE pdfmark
} if
% Copy annotations and links.
dup /Annots knownoget {
0 1 2 index length 1 sub
{ 1 index exch oget
dup type /dicttype eq {
dup /Subtype oget annottypes exch .knownget { exec } { pop } ifelse
} {
pop
} ifelse
}
for pop
} if
} if % end .writepdfmarks
% Display the actual page contents.
8 dict begin
/BXlevel 0 def
/BMClevel 0 def
/OFFlevels 0 dict def
/BGDefault currentblackgeneration def
/UCRDefault currentundercolorremoval def
%****** DOESN'T HANDLE COLOR TRANSFER YET ******
/TRDefault currenttransfer def
matrix currentmatrix 2 dict
2 index /CropBox pget {
oforce_elems normrect_elems boxrect
4 array astore 1 index /ClipRect 3 -1 roll put
} if
dictbeginpage setmatrix
/DefaultQstate qstate store
count 1 sub /pdfemptycount exch store
% If the page uses any transparency features, show it within
% a transparency group.
dup pageusestransparency dup /PDFusingtransparency exch def {
% Show the page within a PDF 1.4 device filter.
0 .pushpdf14devicefilter {
/DefaultQstate qstate store % device has changed -- reset DefaultQstate
% If the page has a Group, enclose contents in transparency group.
% (Adobe Tech Note 5407, sec 9.2)
dup /Group knownoget {
1 index /CropBox pget {
/CropBox exch
} {
1 index get_media_box pop /MediaBox exch
} ifelse
oforce_elems normrect_elems fix_empty_rect_elems 4 array astore .beginformgroup {
showpagecontents
} stopped {
.discardtransparencygroup stop
} if .endtransparencygroup
} {
showpagecontents
} ifelse
} stopped {
% todo: discard
.poppdf14devicefilter
/DefaultQstate qstate store % device has changed -- reset DefaultQstate
stop
} if .poppdf14devicefilter
/DefaultQstate qstate store % device has changed -- reset DefaultQstate
} {
showpagecontents
} ifelse
.free_page_resources
% todo: mixing drawing ops outside the device filter could cause
% problems, for example with the pnga device.
endpage
end % scratch dict
% Some PDF files don't have matching q/Q (gsave/grestore) so we need
% to clean up any left over dicts from the dictstack
PDFdictstackcount //false
{ countdictstack 2 index le { exit } if
currentdict /n known not or
end
} loop {
( **** Warning: File has unbalanced q/Q operators \(too many q's\)\n)
pdfformaterror
} if
pop
(after exec) VMDEBUG
Repaired % pass Repaired state around the restore
PDFSave restore
/Repaired exch def
} bind def
% Display the contents of a page (including annotations).
/showpagecontents { % <pagedict> showpagecontents -
dup % Save the pagedict for the Annotations
count 1 sub /pdfemptycount exch store
gsave % preserve gstate for Annotations later
/Contents knownoget not { 0 array } if
dup type /arraytype ne { 1 array astore } if {
oforce //false resolvestream pdfopdict .pdfrun
} forall
% check for extra garbage on the ostack and clean it up
count pdfemptycount sub dup 0 ne {
( **** File did not complete the page properly and may be damaged.\n)
pdfformaterror
{ pop } repeat
} {
pop
} ifelse
grestore
% Draw the annotations
//systemdict /ShowAnnots .knownget not { //true } if {
/Annots knownoget {
{ oforce
dup //null ne {
drawannot
} {
pop
} ifelse
} forall
} if
} if
//systemdict /ShowAcroForm .knownget { //true eq } { //false } ifelse {
Trailer /Root oget /AcroForm knownoget { draw_acro_form } if
} if
} bind def
/processcolorspace { % - processcolorspace <colorspace>
% The following is per the PLRM3.
currentdevice 1 dict dup /ProcessColorModel dup put .getdeviceparams
exch pop exch pop
dup type /nametype ne { cvn } if
dup { setcolorspace } .internalstopped { pop /DeviceRGB } if
} bind def
% ------ Transparency support ------ %
% Determine whether a page might invoke any transparency features:
% - Non-default BM, ca, CA, or SMask in an ExtGState
% - Image XObject with SMask
% Note: we deliberately don't check to see whether a Group is defined,
% because Adobe Illustrator 10 (and possibly other applications) define
% a page-level group whether transparency is actually used or not.
% Ignoring the presence of Group is justified because, in the absence
% of any other transparency features, they have no effect.
%
% Transparency is a 1.4 feature however we have seen files that claimed
% to be PDF 1.1 with transparency features. Bugs 689288, 691273.
/pageusestransparency { % <pagedict> pageusestransparency <bool>
NOTRANSPARENCY {
pop //false
} {
dup //false exch {
4 dict 1 index resourceusestransparency { pop not exit } if
/Parent knownoget not { exit } if
} loop
% Also check for transparency in the annotation (if not in resources).
{ pop //true } { annotsusetransparency } ifelse
} ifelse
} bind def
% Check if transparency is specified in an ExtGState dict
/extgstateusestransparency { % <gstate dict> extgstateusestransparency <bool>
//false exch % Assume no transparency
dup //null eq {
pop % bug 692050
} {
{ % establish loop context
dup /BM knownoget {
dup /Normal ne exch /Compatible ne and { pop not exit } if
} if
dup /ca knownoget { 1 ne { pop not exit } if } if
dup /CA knownoget { 1 ne { pop not exit } if } if
dup /SMask knownoget { /None ne { pop not exit } if } if
pop exit
} loop
} ifelse
} bind def
% Check if transparency is used in a Pattern
/patternusestransparency { % <Pattern dict> patternusestransparency <bool>
dup //null eq NOTRANSPARENCY or
{ pop //false }
{ //false exch % Assume no transparency
{
4 dict 1 index resourceusestransparency { pop not exit } if
dup /ExtGState knownoget { extgstateusestransparency { pop not exit } if } if
pop exit
} loop
}
ifelse
} bind def
% Check the Resources of a page or Form. Check for loops in the resource chain.
/resourceusestransparency { % <dict> <dict> resourceusestransparency <bool>
{ % Use loop to provide an exitable context.
/Resources knownoget not { 0 dict } if
2 copy .knownget {
{ % Some circular references may be missed because scanning stops
% when the 1st transparency is found.
( **** File has circular references in resource dictionaries.\n)
pdfformaterror
} if
pop //false exit
} if
2 copy //true put % In the current chain.
dup /ExtGState knownoget {
//false exch
{ { exch pop oforce extgstateusestransparency { pop //true exit } if
} forall
dup { exit } if
} big-res-forall
{ pop //true exit } if
} if
dup /Pattern knownoget {
//false exch
{ { exch pop oforce patternusestransparency { pop //true exit } if
} forall
dup { exit } if
} big-res-forall
{ pop //true exit } if
} if
dup /XObject knownoget {
dup type dup /dicttype eq exch /arraytype eq or {
//false exch
{ {
exch pop oforce
dup //null ne {
dup /Subtype get
dup /Image eq {
1 index /SMask oknown { pop pop not exit } if
1 index /SMaskInData knownoget {
0 ne { pop pop not exit } if
} if
} if
/Form eq {
3 index exch resourceusestransparency { not exit } if
} {
pop
} ifelse
} {
pop
} ifelse
} forall
dup { exit } if
} big-res-forall
{ pop //true exit } if
} {
( **** Ignoring non-dictionary /XObject attribute.\n)
pdfformaterror
pop
} ifelse
} if
2 copy //false put % Visited but not in the current chain.
pop //false exit
} loop
exch pop
} bind def
% Check if the annotations on a page use transparency
/annotsusetransparency { % <page dict> annotsusetransparency <bool>
//false exch % Assume no transparency
/Annots knownoget { % Get Annots array
{
oforce
dup //null ne {
dup /Subtype knownoget {
/Highlight eq { % Highlight annotation is always implemented
pop pop //true exit % as transparency.
} if
} if
/AP knownoget { % Get appearance dict for the annoation
/N knownogetdict { % Get the /N (i.e. normal) appearance stream
4 dict exch resourceusestransparency { pop //true exit } if
} if
} if % If AP dict known
} {
pop
} ifelse
} forall % For all annots on the page
} if
} bind def
% Add a color name to our spot color list. Ignore /All and /None
/putspotcolor { % <name> <spotcolordict> putspotcolor -
% The 'name' could be a string. If so then convert to a name.
exch dup type /stringtype eq { cvn } if
dup dup /None eq exch /All eq or { pop pop } { 0 put } ifelse
} bind def
% Determine which spot colors are used within a color space Note: This
% dict will include all colors used in Separation or DeviceN color spaces.
% Thus it may include Cyan, Magenta, Yellow, and Black.
% <colorspace> <spotcolordict> colorspacespotcolors -
/colorspacespotcolors {
exch dup type /arraytype eq {
% If we have an Indexed color space then get the base space.
dup 0 oget % <<>> [csp] /Type
dup /Indexed eq {
pop 1 oget % <<>> [base]
2 copy exch colorspacespotcolors
} {
% Stack: <spotcolordict> <colorspace> <colorspacetype>
dup /Separation eq exch /DeviceN eq or {
dup 1 oget dup type /arraytype eq {
{ oforce 2 index putspotcolor } forall
} {
2 index putspotcolor
} ifelse
} if
} ifelse
} if
pop pop
} bind def
% Enumerate resource dictionary or an array of dictionaries
% <object> <proc> big-res-forall -
/big-res-forall {
1 index type /dicttype eq { 0 get } if
forall
} bind def
% Check the Resources of a page, form, or annotation. Determine which spot
% colors are used within the resource Note: The spot color dict will include
% all colors used in Separation or DeviceN color spaces. Thus it may include
% Cyan, Magenta, Yellow, and Black. We also pass a dict that is used to check
% for loops in the resource list.
% <spotcolordict> <loopdict> <page/form/annot dict>
% resourcespotcolors <spotcolordict> <loopdict>
/resourcespotcolors {
{ % Use loop to provide an exitable context.
% Exit if no Resources entry
/Resources knownoget not { exit } if
% Exit if we have already seen this dict
2 copy known { pop exit } if
% Save the Resources dict into our loop checking dict.
2 copy 0 put
% Scan resources that might contain a color space.
dup /ColorSpace knownoget {
{ { exch pop oforce 3 index colorspacespotcolors } forall } big-res-forall
} if
dup /Pattern knownoget {
{ { exch pop oforce
dup /Shading knownoget {
exch pop
/ColorSpace oget 3 index colorspacespotcolors
} {
4 copy exch pop resourcespotcolors pop pop pop
} ifelse
} forall } big-res-forall
} if
dup /Shading knownoget {
{ { exch pop oforce /ColorSpace oget 3 index colorspacespotcolors } forall } big-res-forall
} if
/XObject knownoget {
dup type dup /dicttype eq exch /arraytype eq or {
{ { exch pop oforce
dup //null ne {
dup /Subtype oget
dup /Form eq {
pop resourcespotcolors
} {
/Image eq {
/ColorSpace knownoget {
2 index colorspacespotcolors
} if
} {
pop
} ifelse
} ifelse
} {
pop
} ifelse
} forall
} big-res-forall
} {
pop % Just ignore here, already reported by resourceusestransparency.
} ifelse
} if
exit
} loop
} bind def
% Determine which spot colors are used within the annotations. Note: This
% dict will include all colors used in Separation or DeviceN color spaces.
% Thus it may include Cyan, Magenta, Yellow, and Black.
% <spotcolordict> <loopdict> <annotsarray>
% annotsspotcolors <spotcolordict> <loopdict>
/annotsspotcolors {
{ oforce
dup //null ne {
/AP knownoget { % Get appearance dict for the annoation
/N knownogetdict { % Get the /N (i.e. normal) appearance stream
resourcespotcolors
} if % If normal appearance streamknown
} if % If AP dict known
} {
pop
} ifelse
} forall
} bind def
% Determine spot colors are used within a page. We are creating a dict to
% hold the spot color names as keys. Using a dict avoids having to worry
% about duplicate entries. The keys in the dict contain the spot color
% names. However the values have no meaning. Note: This dict will include
% all colors used in Separation or DeviceN color spaces specified in the
% page's resources. Thus it may include Cyan, Magenta, Yellow, and Black.
% There is no attempt to verify that these color spaces are actually used
% within the object streams for the page.
/pagespotcolors { % <pagedict> pagespotcolors <spotcolordict>
dup
% Create a dict to hold spot color names.
0 dict exch
% Create a dict to be used to check for reference loops.
4 dict exch
% Check for color spaces in the Resources
resourcespotcolors
% now check upwards in the object hierarchy in case of inherited resources
2 index
{
/Parent knownoget
{
dup 4 1 roll
resourcespotcolors
3 -1 roll
}
{
exit
} ifelse
} loop
% Also check for color spaces in the annotations.
3 -1 roll
/Annots knownoget { annotsspotcolors } if
pop % Discard reference loop dict
} bind def
% Determine how many (if any) spot colors are used by a page.
% Note: This count does not include Cyan, Magenta, Yellow, or Black
/countspotcolors { % <pagedict> countspotcolors <count>
pagespotcolors % Get dict with all spot colors
dup length % spot color dict length
% Remove CMYK from the spot color count.
[ /Cyan /Magenta /Yellow /Black ]
{ 2 index exch known { 1 sub } if } forall
exch pop % Remove spot color dict
} bind def
% ------ ColorSpace substitution support ------ %
%
% <pagedict> pdfshowpage_setcspacesub <pagedict>
%
% Set up color space substitution for a page. Invocations of this procedure
% must be bracketed by the save/restore operation for the page, to avoid
% unintended effects on other pages.
%
% If any color space substitution is used, and the current color space is a
% device dependent color space, make sure the current color space is updated.
% There is an optimization in the setcolorspace operator that does
% nothing if both the current and operand color spaces are the same. For
% PostScript this optimization is disabled if the UseCIEColor page device
% parameter is true. This is not the case for PDF, as performance suffers
% significantly on some PDF files if color spaces are set repeatedly. Hence,
% if color space substitution is to be used, and the current color space
% is a device dependent color space, we must make sure to "transition" the
% current color space.
%
/pdfshowpage_setcspacesub {
//false
/DefaultGray 2 index /ColorSpace //rget exec {
resolvecolorspace dup csncomp 1 eq {
/DefaultGray exch /ColorSpace defineresource pop
pop //true
} {
pop
( **** Warning: ignoring invalid /DefaultGray color space.\n)
pdfformaterror
} ifelse
} if
/DefaultRGB 2 index /ColorSpace //rget exec {
resolvecolorspace dup csncomp 3 eq {
/DefaultRGB exch /ColorSpace defineresource pop
pop //true
} {
pop
( **** Warning: ignoring invalid /DefaultCMYK color space.\n)
pdfformaterror
} ifelse
} if
/DefaultCMYK 2 index /ColorSpace //rget exec {
resolvecolorspace dup csncomp 4 eq {
/DefaultCMYK exch /ColorSpace defineresource pop
pop //true
} {
pop
( **** Warning: ignoring invalid /DefaultCMYK color space.\n)
pdfformaterror
} ifelse
} if
{ % if using color space substitution, "transition" the current color space
currentcolorspace dup length 1 eq { % always an array
0 get
dup /DeviceGray eq 1 index /DeviceRGB eq or 1 index /DeviceCMYK eq or {
/Pattern setcolorspace setcolorspace
} {
pop
} ifelse
} {
pop
} ifelse
} if
} bind def
% Write OutputIntents to device if the device handles it
/writeoutputintents {
currentdevice 1 dict dup /OutputIntent //null put readonly
.getdeviceparams
mark ne { pop pop
% device supports OutputIntent parameter
Trailer /Root oget /OutputIntents knownoget {
dup type /arraytype eq {
{ % process all output profiles present
oforce
dup length dict .copydict
dup /DestOutputProfile knownoget {
PDFfile fileposition exch
mark exch { oforce } forall .dicttomark
//true resolvestream
[ { counttomark 1 add index
64000 string readstring
not { exit } if
} loop
] exch closefile
0 1 index { length add } forall .bytestring
0 3 2 roll {
3 copy putinterval
length add
} forall pop
exch PDFfile exch setfileposition
1 index /DestOutputProfile 3 2 roll put
} if
% Convert to string array because it's easier for the device
[ 1 index /OutputCondition knownoget not { () } if
2 index /OutputConditionIdentifier knownoget not { () } if
3 index /RegistryName knownoget not { () } if
4 index /Info knownoget not { () } if
5 index /DestOutputProfile knownoget not { () } if
]
[ /OutputIntent 3 2 roll .pdfputparams pop pop
pop % done with this OutputIntent dictionary
} forall
} {
pop
( **** Warning: OutputIntent attribute of a wrong type is ignored.\n)
pdfformaterror
} ifelse
} if % OutputIntents known
% tell device there are no more OutputIntents
[ /OutputIntent [ ] .pdfputparams pop pop
} if
} bind def
end % pdfdict
.setglobal
|