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Commit c035139

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thomasWeisethomasWeise
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improved pdf filtering
1 parent 5979c47 commit c035139

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‎scripts/filterPdf.sh

Lines changed: 86 additions & 91 deletions
Original file line numberDiff line numberDiff line change
@@ -14,101 +14,96 @@ fileOut="$2"
1414

1515
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We will filter '$fileIn' to '$fileOut using ghostscript."
1616

17-
tempFileA="$(mktemp)"
18-
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We will first filter '$fileIn' to '$tempFileA' using ghostscript."
17+
tempFileSrc="$(mktemp)"
18+
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We will first copy '$fileIn' to '$tempFileSrc'."
19+
cp "$fileIn" "$tempFileSrc"
20+
fileSize="$(stat -c%s "$tempFileSrc")"
21+
oldFileSize=""
22+
cycle=0
1923

20-
gs -dAntiAliasColorImages=true \
21-
-dAntiAliasGrayImages=true \
22-
-dAntiAliasMonoImages=true \
23-
-dAutoFilterColorImages=false \
24-
-dAutoFilterGrayImages=false \
25-
-dAutoRotatePages=/None \
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-dBATCH \
27-
-dCannotEmbedFontPolicy=/Error \
28-
-dColorConversionStrategy=/LeaveColorUnchanged \
29-
-dColorImageFilter=/FlateEncode \
30-
-dCompressFonts=true \
31-
-dCompressStreams=true \
32-
-dDetectDuplicateImages=true \
33-
-dDownsampleColorImages=false \
34-
-dDownsampleGrayImages=false \
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-dDownsampleMonoImages=false \
36-
-dEmbedAllFonts=true \
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-dFastWebView=false \
38-
-dGrayImageFilter=/FlateEncode \
39-
-dHaveTransparency=true \
40-
-dMaxBitmap=2147483647 \
41-
-dNOPAUSE \
42-
-dOptimize=true \
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-dPassThroughJPEGImages=true \
44-
-dPassThroughJPXImages=true \
45-
-dPDFSTOPONERROR=true \
46-
-dPDFSTOPONWARNING=true \
47-
-dPreserveCopyPage=false \
48-
-dPreserveEPSInfo=false \
49-
-dPreserveHalftoneInfo=false \
50-
-dPreserveOPIComments=false \
51-
-dPreserveOverprintSettings=false \
52-
-dPreserveSeparation=false \
53-
-dPreserveDeviceN=false \
54-
-dPrinted=false \
55-
-dQUIET \
56-
-dSAFER \
57-
-dSubsetFonts=true \
58-
-dUNROLLFORMS \
59-
-sDEVICE=pdfwrite \
60-
-sOutputFile="$tempFileA" "$fileIn" \
61-
-c "<</NeverEmbed [ ]>> setdistillerparams" \
62-
-q
24+
while :
25+
do
26+
cycle=$((cycle+1))
27+
tempFileDst="$(mktemp)"
28+
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): Now beginning filter cycle $cycle with destination '$tempFileDst'."
6329

64-
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We now filter '$tempFileA' to '$fileOut' using ghostscript."
30+
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We ghostscript to filter '$tempFileSrc' to '$tempFileDst'."
31+
gs -dAntiAliasColorImages=true \
32+
-dAntiAliasGrayImages=true \
33+
-dAntiAliasMonoImages=true \
34+
-dAutoFilterColorImages=false \
35+
-dAutoFilterGrayImages=false \
36+
-dAutoRotatePages=/None \
37+
-dBATCH \
38+
-dCannotEmbedFontPolicy=/Error \
39+
-dColorConversionStrategy=/LeaveColorUnchanged \
40+
-dColorImageFilter=/FlateEncode \
41+
-dCompatibilityLevel=1.4 \
42+
-dCompressFonts=true \
43+
-dCompressStreams=true \
44+
-dCreateJobTicket=false \
45+
-dDetectDuplicateImages=true \
46+
-dDoThumbnails=false \
47+
-dDownsampleColorImages=false \
48+
-dDownsampleGrayImages=false \
49+
-dDownsampleMonoImages=false \
50+
-dEmbedAllFonts=true \
51+
-dFastWebView=false \
52+
-dGrayImageFilter=/FlateEncode \
53+
-dHaveTransparency=true \
54+
-dMaxBitmap=2147483647 \
55+
-dNOPAUSE \
56+
-dOptimize=true \
57+
-dPassThroughJPEGImages=true \
58+
-dPassThroughJPXImages=true \
59+
-dPDFSTOPONERROR=true \
60+
-dPDFSTOPONWARNING=true \
61+
-dPreserveCopyPage=false \
62+
-dPreserveEPSInfo=false \
63+
-dPreserveHalftoneInfo=false \
64+
-dPreserveOPIComments=false \
65+
-dPreserveOverprintSettings=false \
66+
-dPreserveSeparation=false \
67+
-dPreserveDeviceN=false \
68+
-dPreserveMarkedContent=false \
69+
-dPrinted=false \
70+
-dOmitInfoDate=true \
71+
-dOmitID=true \
72+
-dOmitXMP=true \
73+
-dQUIET \
74+
-dSAFER \
75+
-dSubsetFonts=true \
76+
-dUCRandBGInfo=/Remove \
77+
-dUNROLLFORMS \
78+
-sDEVICE=pdfwrite \
79+
-sOutputFile="$tempFileDst" "$tempFileSrc" \
80+
-c "<</NeverEmbed [ ]>> setdistillerparams" \
81+
-c "/PreserveAnnotTypes [/Link] def" \
82+
-q
6583

66-
gs -dAntiAliasColorImages=true \
67-
-dAntiAliasGrayImages=true \
68-
-dAntiAliasMonoImages=true \
69-
-dAutoFilterColorImages=false \
70-
-dAutoFilterGrayImages=false \
71-
-dAutoRotatePages=/None \
72-
-dBATCH \
73-
-dCannotEmbedFontPolicy=/Error \
74-
-dColorConversionStrategy=/LeaveColorUnchanged \
75-
-dColorImageFilter=/FlateEncode \
76-
-dCompressFonts=true \
77-
-dCompressStreams=true \
78-
-dDetectDuplicateImages=true \
79-
-dDownsampleColorImages=false \
80-
-dDownsampleGrayImages=false \
81-
-dDownsampleMonoImages=false \
82-
-dEmbedAllFonts=true \
83-
-dFastWebView=false \
84-
-dGrayImageFilter=/FlateEncode \
85-
-dHaveTransparency=true \
86-
-dMaxBitmap=2147483647 \
87-
-dNOPAUSE \
88-
-dOptimize=true \
89-
-dPassThroughJPEGImages=true \
90-
-dPassThroughJPXImages=true \
91-
-dPDFSTOPONERROR=true \
92-
-dPDFSTOPONWARNING=true \
93-
-dPreserveCopyPage=false \
94-
-dPreserveEPSInfo=false \
95-
-dPreserveHalftoneInfo=false \
96-
-dPreserveOPIComments=false \
97-
-dPreserveOverprintSettings=false \
98-
-dPreserveSeparation=false \
99-
-dPreserveDeviceN=false \
100-
-dPrinted=false \
101-
-dQUIET \
102-
-dSAFER \
103-
-dSubsetFonts=true \
104-
-dUNROLLFORMS \
105-
-sDEVICE=pdfwrite \
106-
-sOutputFile="$fileOut" "$tempFileA" \
107-
-c "<</NeverEmbed [ ]>> setdistillerparams" \
108-
-q
84+
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): We filtered '$tempFileSrc' to '$tempFileDst' using ghostscript."
85+
oldFileSize="$fileSize"
86+
echo "--- the size of the old file '$tempFileSrc': $oldFileSize"
87+
fileSize="$(stat -c%s "$tempFileDst")"
88+
echo "--- the size of the new file '$tempFileDst': $fileSize"
10989

110-
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): Now deleing '$tempFileA'."
90+
if (("$cycle" > 3)) ; then
91+
if (("$fileSize" >= "$oldFileSize")) ; then
92+
echo "--- We completed $cycle cycles and the new file is not smaller than the old file, so we stop and use the old file."
93+
rm "$tempFileDst"
94+
break
95+
else
96+
echo "--- We completed $cycle cycles and the new file is smaller than the old file, so we continue."
97+
fi
98+
else
99+
echo "--- We completed only $cycle cycles, so we continue."
100+
fi
111101

112-
rm "$tempFileA"
102+
rm "$tempFileSrc"
103+
tempFileSrc="$tempFileDst"
104+
done
105+
106+
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): Now moving '$tempFileSrc' to '$fileOut'."
107+
mv "$tempFileSrc" "$fileOut"
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114109
echo "$(date +'%0Y-%0m-%0d %0R:%0S'): Successfully finished filtering '$fileIn' to '$fileOut using ghostscript."

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