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configure.py: sanitize restrictive policies of IM on some distributions.
Some distros banned GS for Imagemigick conversions. In effect eps->png conversion is broken and this can't be fixed locally by the user. Our workaround is to allow eps->pdf->png conversion from different tools when IM bans the conversion. https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg217834.html
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@ -1087,13 +1087,15 @@ def checkConverterEntries():
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# Only define a converter from pdf6 for graphics
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checkProg('a PDF to EPS converter', ['pdftops -eps -f 1 -l 1 $$i $$o'],
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rc_entry = [ r'\converter pdf6 eps "%%" ""' ])
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# Define a converter from pdf6 to png for Macs where pdftops is missing.
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# sips:Define a converter from pdf6 to png for Macs where pdftops is missing.
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# The converter utility sips allows to force the dimensions of the resulting
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# png image. The value of 800 pixel for the width is arbitrary and not
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# related to the current screen resolution or width.
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# There is no converter parameter for this information.
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#
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#pdftoppm: Some systems ban IM eps->png conversion. We will offer eps->pdf->png route instead.
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checkProg('a PDF to PNG converter',
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['sips --resampleWidth 800 --setProperty format png $$i --out $$o'],
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['sips --resampleWidth 800 --setProperty format png $$i --out $$o' , 'pdftoppm -r 72 -png -singlefile $$i > $$o'],
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rc_entry = [ r'\converter pdf6 png "%%" ""' ])
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# Create one converter for a PDF produced using TeX fonts and one for a
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# PDF produced using non-TeX fonts. This does not produce non-unique
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@ -1190,8 +1192,23 @@ def checkConverterEntries():
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checkProg('an EPS -> PDF converter', ['epstopdf'],
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rc_entry = [ r'\converter eps pdf6 "epstopdf --outfile=$$o $$i" ""'])
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#
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checkProg('an EPS -> PNG converter', ['magick $$i[0] $$o', 'convert $$i[0] $$o'],
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rc_entry = [ r'\converter eps png "%%" ""'])
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# Due to more restrictive policies, it is possible that (image)magick
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# does not allow conversions from eps to png.
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# So before setting the converter test it it on a mock file
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_, cmd = checkProg('an EPS -> PNG converter', ['magick', 'convert'])
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if cmd:
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writeToFile('mock.eps', r'%!PS')
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try:
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subprocess.check_call([cmd, "mock.eps", "mock.png"])
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removeFiles(['mock.eps', 'mock.png'])
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rc_entry = r'\converter eps png "%s $$i[0] $$o" ""'
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addToRC(rc_entry % cmd)
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except:
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removeFiles(['mock.eps'])
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#needs empty record otherwise default converter will be issued
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rc_entry = r'\converter eps png "" ""'
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addToRC(rc_entry)
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logger.info('ImageMagick seems to ban conversions from EPS. Disabling direct EPS->PNG.')
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#
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# no agr -> pdf6 converter, since the pdf library used by gracebat is not
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# free software and therefore not compiled in in many installations.
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