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% Copyright (C) 2001-2023 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., 39 Mesa Street, Suite 108A, San Francisco,
% CA 94129, USA, for further information.
%
%
% $Id:$
%
% Extract Fonts from a PDF file
%
% Font files are written with the same name as in the PDF, which
% may be of the form ABCDEF+fontname if the font is a subset.
%
% example usage:
%
% gs -q -dNODISPLAY extractFonts.ps -c "(somefile.pdf) extractFonts quit"
%
% Copy one file to another.
% Close the files when finished
/copyfile % <infile> <outfile> copyfile -
{ 0 mark 32000 string
{ 4 index 1 index readstring
exch 5 index 1 index writestring
length 5 -1 roll add 4 1 roll
not { exit } if
} loop
cleartomark 3 -1 roll closefile
pop closefile
} bind def
/extractFonts { % (filename) extractFonts
/FontsFound 100 dict def
(r) file runpdfbegin
1 1 pdfpagecount % stack: first_page# last_page#
{
pdfgetpage % get pagedict
/Resources pget {
/Font knownoget {
{ exch pop oforce
dup /DescendantFonts knownoget {
exch pop 0 get oforce
} if
dup /FontDescriptor knownoget {
dup /FontFile known 1 index /FontFile2 known or exch /FontFile3 known or
{
% embedded font found!
dup /BaseFont oget
FontsFound 1 index known not {
1 index /Subtype oget
FontsFound 2 index 2 index put % mark the font we found
% data for different types of fonts is handled separately
% stack: -dict- BaseFont Subtype
dup /Type1 eq {
2 index /FontDescriptor oget
dup /FontFile knownoget {
true resolvestream
2 index 100 string cvs (.pfb) concatstrings
(Extracting Type1 font: ) print dup = flush
(w) file copyfile
} if
/FontFile3 knownoget {
dup /Subtype oget /Type1C ne {
(Warning: Font ) print 2 index =print ( of type: ) print dup
/Subtype oget =print ( is being written with extension .cff) = flush
} if
true resolvestream
2 index 100 string cvs (.cff) concatstrings
(Extracting Type1C font: ) print dup = flush
(w) file copyfile
} if
} if
dup /TrueType eq {
2 index /FontDescriptor oget
dup ===
/FontFile2 oget true resolvestream
2 index 100 string cvs (.ttf) concatstrings
(Extracting TrueType font: ) print dup = flush
(w) file copyfile
} if
pop pop % done with BaseFont and Subtype
} if % end if font not already in FontsFound
pop % done with the font resource dictionary
} {
pop % not embedded
} ifelse
} {
pop % no FontDescriptor, not embedded
} ifelse
} forall % traverse the Font resource dictionary
} if
} if
} for
} bind def
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