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commentwork and minor corrections

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This commit is contained in:
Karsten Wolf 2014-08-05 09:42:42 +02:00
parent 8a8f57e568
commit 689fa83f86
1 changed files with 7 additions and 11 deletions
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16
PIL/EpsImagePlugin.py
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@ -27,8 +27,6 @@ import unicodedata
from PIL import Image, ImageFile, _binary from PIL import Image, ImageFile, _binary
import pdb
# #
# -------------------------------------------------------------------- # --------------------------------------------------------------------
@ -83,12 +81,12 @@ def makeunicode( s, enc="latin-1", normalizer='NFC'):
def Ghostscript(tile, size, fp): def Ghostscript(tile, size, fp):
"""Render an image using Ghostscript""" """Render an image using Ghostscript"""
# size is either pts or pixels
# Unpack decoder tile # Unpack decoder tile
decoder, tile, offset, data = tile[0] decoder, tile, offset, data = tile[0]
length, bbox = data length, bbox = data
# bbox is in points == 1/72 inch
# size is in pixels, a device unit
xpointsize = bbox[2] - bbox[0] xpointsize = bbox[2] - bbox[0]
ypointsize = bbox[3] - bbox[1] ypointsize = bbox[3] - bbox[1]
xdpi = size[0] / (xpointsize / 72.0) xdpi = size[0] / (xpointsize / 72.0)
@ -107,16 +105,15 @@ def Ghostscript(tile, size, fp):
with open(infile, 'wb') as f: with open(infile, 'wb') as f:
# fetch length of fp # fetch length of fp
fp.seek(0, 2) fp.seek(0, 2)
fsize = fp.tell() lengthfile = fp.tell()
# ensure start position # ensure start position
# go back # go back
fp.seek(0) fp.seek(0)
lengthfile = fsize
while lengthfile > 0: while lengthfile > 0:
s = fp.read(min(lengthfile, 4*1024*1024)) s = fp.read( 4*1024*1024 )
if not s: if not s:
break break
length -= len(s) lengthfile -= len(s)
f.write(s) f.write(s)
# Build ghostscript command # Build ghostscript command
@ -222,11 +219,10 @@ class EpsImageFile(ImageFile.ImageFile):
fp.seek(0) fp.seek(0)
sb = fp.readbinary(160) sb = fp.readbinary(160)
if s[:4] == "%!PS":
offset = 0 offset = 0
if s[:4] == "%!PS":
fp.seek(0, 2) fp.seek(0, 2)
length = fp.tell() length = fp.tell()
offset = 0
elif i32(sb[0:4]) == 0xC6D3D0C5: elif i32(sb[0:4]) == 0xC6D3D0C5:
offset = i32(sb[4:8]) offset = i32(sb[4:8])
length = i32(sb[8:12]) length = i32(sb[8:12])