python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-01-12 18:26:17 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix hang by using temp file and command line args instead of stdin

Browse Source
This commit is contained in:
wiredfool 2014-01-21 23:18:24 -08:00
parent 8ce2faa8c9
commit a549e77bd8
1 changed files with 24 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
PIL/EpsImagePlugin.py
View File

@ -67,16 +67,29 @@ def Ghostscript(tile, size, fp, scale=1):
import tempfile, os, subprocess
file = tempfile.mktemp()
outfile = tempfile.mktemp()
infile = tempfile.mktemp()
with open(infile, 'wb') as f:
fp.seek(offset)
while length >0:
s = fp.read(100*1024)
if not s:
break
length = length - len(s)
f.write(s)
# Build ghostscript command
command = ["gs",
"-q", # quite mode
"-g%dx%d" % size, # set output geometry (pixels)
"-r%d" % (72*scale), # set input DPI (dots per inch)
"-dNOPAUSE -dSAFER", # don't pause between pages, safe mode
"-sDEVICE=ppmraw", # ppm driver
"-sOutputFile=%s" % file,# output file
"-q", # quiet mode
"-g%dx%d" % size, # set output geometry (pixels)
"-r%d" % (72*scale), # set input DPI (dots per inch)
"-dNOPAUSE -dSAFER", # don't pause between pages, safe mode
"-sDEVICE=ppmraw", # ppm driver
"-sOutputFile=%s" % outfile, # output file
"-c", "%d %d translate" % (-bbox[0], -bbox[1]),
# adjust for image origin
"-f", infile, # input file
]
if gs_windows_binary is not None:
@ -87,23 +100,15 @@ def Ghostscript(tile, size, fp, scale=1):
# push data through ghostscript
try:
gs = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
# adjust for image origin
if bbox[0] != 0 or bbox[1] != 0:
gs.stdin.write(("%d %d translate\n" % (-bbox[0], -bbox[1])).encode('ascii'))
fp.seek(offset)
while length > 0:
s = fp.read(8192)
if not s:
break
length = length - len(s)
gs.stdin.write(s)
gs.stdin.close()
status = gs.wait()
if status:
raise IOError("gs failed (status %d)" % status)
im = Image.core.open_ppm(file)
im = Image.core.open_ppm(outfile)
finally:
try: os.unlink(file)
try:
os.unlink(outfile)
os.unlink(infile)
except: pass
return im