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Use "with" to open and close input files

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Ryan C. Thompson 2014-11-06 00:53:16 -08:00
parent b726afbb5a
commit d09cd0f197
1 changed files with 40 additions and 42 deletions
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82
src/img2pdf.py
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@ -206,51 +206,51 @@ def convert(images, dpi, x, y, title=None, author=None, creator=None, producer=N
for imfilename in images: for imfilename in images:
debug_out("Reading %s"%imfilename, verbose) debug_out("Reading %s"%imfilename, verbose)
im = open(imfilename, "rb") with open(imfilename, "rb") as im:
rawdata = im.read() rawdata = im.read()
im.seek(0) im.seek(0)
try: try:
imgdata = Image.open(im) imgdata = Image.open(im)
except IOError as e: except IOError as e:
# test if it is a jpeg2000 image # test if it is a jpeg2000 image
if rawdata[:12] != "\x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A": if rawdata[:12] != "\x00\x00\x00\x0C\x6A\x50\x20\x20\x0D\x0A\x87\x0A":
error_out("cannot read input image (not jpeg2000)") error_out("cannot read input image (not jpeg2000)")
error_out("PIL: %s"%e) error_out("PIL: %s"%e)
exit(1) exit(1)
# image is jpeg2000 # image is jpeg2000
width, height, ics = parsejp2(rawdata) width, height, ics = parsejp2(rawdata)
imgformat = "JPEG2000" imgformat = "JPEG2000"
if dpi: if dpi:
ndpi = dpi, dpi ndpi = dpi, dpi
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose) debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
else: else:
ndpi = (96, 96) # TODO: read real dpi ndpi = (96, 96) # TODO: read real dpi
debug_out("input dpi = %d x %d"%ndpi, verbose) debug_out("input dpi = %d x %d"%ndpi, verbose)
if colorspace: if colorspace:
color = colorspace color = colorspace
debug_out("input colorspace (forced) = %s"%(ics)) debug_out("input colorspace (forced) = %s"%(ics))
else:
color = ics
debug_out("input colorspace = %s"%(ics), verbose)
else: else:
color = ics width, height = imgdata.size
debug_out("input colorspace = %s"%(ics), verbose) imgformat = imgdata.format
else:
width, height = imgdata.size
imgformat = imgdata.format
if dpi: if dpi:
ndpi = dpi, dpi ndpi = dpi, dpi
debug_out("input dpi (forced) = %d x %d"%ndpi, verbose) debug_out("input dpi (forced) = %d x %d"%ndpi, verbose)
else: else:
ndpi = imgdata.info.get("dpi", (96, 96)) ndpi = imgdata.info.get("dpi", (96, 96))
debug_out("input dpi = %d x %d"%ndpi, verbose) debug_out("input dpi = %d x %d"%ndpi, verbose)
if colorspace: if colorspace:
color = colorspace color = colorspace
debug_out("input colorspace (forced) = %s"%(color), verbose) debug_out("input colorspace (forced) = %s"%(color), verbose)
else: else:
color = imgdata.mode color = imgdata.mode
debug_out("input colorspace = %s"%(color), verbose) debug_out("input colorspace = %s"%(color), verbose)
debug_out("width x height = %d x %d"%(width,height), verbose) debug_out("width x height = %d x %d"%(width,height), verbose)
debug_out("imgformat = %s"%imgformat, verbose) debug_out("imgformat = %s"%imgformat, verbose)
@ -286,8 +286,6 @@ def convert(images, dpi, x, y, title=None, author=None, creator=None, producer=N
pdf.addimage(color, width, height, imgformat, imgdata, pdf_x, pdf_y) pdf.addimage(color, width, height, imgformat, imgdata, pdf_x, pdf_y)
im.close()
return pdf.tostring() return pdf.tostring()