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[pod] Added the possibility, for function 'document', to import, into an ODT result, external documents of various formats: doc, xls, ppt, etc. This new 'ConvertImporter' uses LibreOffice to first convert the doc into PDF, and then uses the PdfImporter to split the PDF into images (one image per page) and include in in the pod result.

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This commit is contained in:
Gaetan Delannay 2013-04-19 15:30:18 +02:00
parent 0a8e06f1d9
commit eaf7156b47
4 changed files with 55 additions and 23 deletions
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28
pod/doc_importers.py
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@ -36,6 +36,7 @@ PDF_TO_IMG_ERROR = 'A PDF file could not be converted into images. Please ' \
'system and the "gs" program is in the path.'
CONVERT_ERROR = 'Program "convert", from imagemagick, must be installed and ' \
'in the path for converting a SVG file into a PNG file.'
TO_PDF_ERROR = 'ConvertImporter error while converting a doc to PDF: %s.'
# ------------------------------------------------------------------------------
class DocImporter:
@ -116,7 +117,8 @@ class DocImporter:
'''In the case parameter "at" was used, we may want to move the file at
p_at within the ODT result in p_importPath (for images) or do
nothing (for docs). In the latter case, the file to import stays
at _at, and is not copied into p_importPath.'''
at _at, and is not copied into p_importPath. So the previously
computed p_importPath is not used at all.'''
return at
class OdtImporter(DocImporter):
@ -135,18 +137,18 @@ class PdfImporter(DocImporter):
'''This class allows to import the content of a PDF file into a pod
template. It calls gs to split the PDF into images and calls the
ImageImporter for importing it into the result.'''
imagePrefix = 'PdfPart'
def getImportFolder(self): return '%s/docImports' % self.tempFolder
def run(self):
imagePrefix = os.path.splitext(os.path.basename(self.importPath))[0]
# Split the PDF into images with Ghostscript
imagesFolder = os.path.dirname(self.importPath)
cmd = 'gs -dNOPAUSE -dBATCH -sDEVICE=jpeg -r125x125 ' \
'-sOutputFile=%s/%s%%d.jpg %s' % \
(imagesFolder, self.imagePrefix, self.importPath)
(imagesFolder, imagePrefix, self.importPath)
os.system(cmd)
# Check that at least one image was generated
succeeded = False
firstImage = '%s1.jpg' % self.imagePrefix
firstImage = '%s1.jpg' % imagePrefix
for fileName in os.listdir(imagesFolder):
if fileName == firstImage:
succeeded = True
@ -157,10 +159,10 @@ class PdfImporter(DocImporter):
i = 0
while not noMoreImages:
i += 1
nextImage = '%s/%s%d.jpg' % (imagesFolder, self.imagePrefix, i)
nextImage = '%s/%s%d.jpg' % (imagesFolder, imagePrefix, i)
if os.path.exists(nextImage):
# Use internally an Image importer for doing this job.
imgImporter =ImageImporter(None, nextImage, 'jpg',self.renderer)
imgImporter= ImageImporter(None, nextImage, 'jpg',self.renderer)
imgImporter.setImageInfo('paragraph', True, None, None, None)
self.res += imgImporter.run()
os.remove(nextImage)
@ -168,6 +170,20 @@ class PdfImporter(DocImporter):
noMoreImages = True
return self.res
class ConvertImporter(DocImporter):
'''This class allows to import the content of any file that LibreOffice (LO)
can convert into PDF: doc, rtf, xls. It first calls LO to convert the
document into PDF, then calls a PdfImporter.'''
def getImportFolder(self): return '%s/docImports' % self.tempFolder
def run(self):
# Convert the document into PDF with LibreOffice
output = self.renderer.callLibreOffice(self.importPath, 'pdf')
if output: raise PodError(TO_PDF_ERROR % output)
pdfFile = '%s.pdf' % os.path.splitext(self.importPath)[0]
# Launch a PdfImporter to import this PDF into the POD result.
pdfImporter = PdfImporter(None, pdfFile, 'pdf', self.renderer)
return pdfImporter.run()
# Compute size of images -------------------------------------------------------
jpgTypes = ('jpg', 'jpeg')
pxToCm = 44.173513561