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scan2pdf

SNIPPET_TEXT:

1. #!/bin/bash
2. # Skript:       scan2pdf
3. # Version:      0.3.4
4. # Purpose:      Scan multiple pages to one final multi-page PDF while trying
5. #               to keep a good balance between quality and file size.
6. # Feedback:     puntarenas<at>fastmail.fm
7.  
8. # Default options, modify to your needs
9. TARGETDIR="$HOME/scan2pdf"
10. TEMPDIR="/tmp"
11. BUTTON="false"
12. AUTHOR=""
13. TITLE=""
14. KEYWORD=""
15.  
16.  
17. # Internal variables, do not modify
18. SCRIPTNAME=$(basename $0 )
19. EXIT_SUCCESS=0
20. EXIT_FAILURE=1
21. EXIT_ERROR=2
22. EXIT_BUG=10
23. CLEANUP="false"
24.  
25. # Echo usage and quit
26. function usage {
27.         echo ""
28.         echo "Note: scan2pdf creates its PDF files in $TARGETDIR,"
29.         echo "using $TEMPDIR for temporary files."
30.         echo ""
31.         echo "Usage: $SCRIPTNAME [-h] [-b] [-c] [-a \"author\"] [-t \"title\"] [-k \"keywords\"] file" >&2
32.         echo ""
33.         echo "-h        show this help"
34.         echo "-b        use the scanners button for batch mode scanning"
35.         echo "-c        force cleanup of temporary files"
36.         echo ""
37.         echo "PDF options (optional):"
38.         echo ""
39.         echo "-a        Author to show up in the document properties, quotes needed"
40.         echo "-t        Title to show up in the document properties, quotes needed"
41.         echo "-k        Keywords to show up in the document properties, quotes needed"
42.         echo ""
43.         echo "file      Name of the resulting PDF without suffix (required)"
44.         echo ""
45.  
46.         [[ $# -eq 1 ]] && exit $1 || exit $EXIT_FAILURE
47. }
48.  
49. # Check if target file or temporary files already exist
50. function initcheck {
51.         if [[ -f $TARGETDIR/$PDFNAME.pdf ]] ; then echo ""
52.                 echo "The  file $TARGETDIR/$PDFNAME.pdf already exists."
53.                 echo "Please choose another filename."
54.                 exit $EXIT_ERROR
55.         fi
56.  
57.         if [[ -f $TEMPDIR/scan2pdfout*.pgm ]] || [[ -f $TEMPDIR/scan2pdftiff*.tif ]] || [[ -f $TEMPDIR/scan2pdftemp.tif ]] ||  [[ -f $TEMPDIR/scan2pdftemp.pdf ]] ; then echo ""
58.                 echo "An error occured, temporary files were not deleted."
59.                 echo "Call $SCRIPTNAME -c to cleanup"
60.                 exit $EXIT_ERROR
61.         fi
62. }
63.  
64. # Clean up the temporary directory
65. function cleanup {
66.         echo "Cleaning up..."
67.         rm $TEMPDIR/scan2pdfout*.pgm
68.         rm $TEMPDIR/scan2pdftiff*.tif
69.         rm $TEMPDIR/scan2pdftemp.tif
70.         rm $TEMPDIR/scan2pdftemp.pdf
71. }
72.  
73. # Start batch scanning for scanners with button support
74. function button {
75.         echo ""
76.         echo "Please insert the first page and push your scanner button to begin."
77.         echo "<Ctrl><c> twice quits batch mode and starts PDF conversion."
78.         echo ""
79.         scanimage --mode=Grayscale --batch=$TEMPDIR/scan2pdfout%d.pgm --batch-start=101 --wait-for-button --resolution=300
80.         # Delete last image as it is invalid
81.         ls $TEMPDIR/scan2pdfout*.pgm | sort | tail -1 | xargs rm
82.         usedata
83. }
84.  
85. # Start batch scanning for scanners without button support
86. function nobutton {
87.         echo ""
88.         echo "Please enter the first page and press any key to scan"
89.         read -s -n 1
90.         i="101"
91.         # Scan first page and increase $i
92.         echo "Scanning page $[$i-100] ..."
93.         scanimage --mode=Grayscale --resolution=300 > $TEMPDIR/scan2pdfout$i.pgm
94.         echo ""
95.         i=$[$i+1]
96.         # FIXME: Empty the keyboard buffer
97.         while read -e -s -t 1 junk; do junk=""; done
98.         # Scan next page or start conversion
99.         echo "Please enter page $[$i-100] and press any key to scan"
100.         echo "Press <q> to quit batch mode and start conversion"
101.         while true ; do
102.                 read -s -n 1 scanit
103.                 if [[ $scanit = "q" ]]; then
104.                         break
105.                 else    echo "Scanning page $[$i-100] ..."
106.                         scanimage --mode=Grayscale --resolution=300 > $TEMPDIR/scan2pdfout$i.pgm
107.                         echo ""
108.                         i=$[$i+1]
109.                         echo "Please enter page $[$i-100] and press any key to scan"
110.                         echo "Press <q> to quit batch mode and start conversion"
111.                 fi
112.                 # FIXME: Empty the keyboard buffer
113.                 while read -e -s -t 5 junk; do junk=""; echo "junk"; done
114.         done
115.         echo ""
116.         usedata
117. }
118.  
119. # Convert raw data and combine it to one single PDF
120. function usedata {
121.         # Create TIFFs
122.         echo "Creating TIFF images..."
123.         ls $TEMPDIR/scan2pdfout*.pgm | while read p; do echo $p; q=`echo $( basename $p )| sed 's/scan2pdfout\(.*\)\.pgm/scan2pdftiff\1.tif/'`; echo $q; cat $p | pgmtopbm -t -v 0.6 | pnmtotiff -g4 > $TEMPDIR/$q ; done
124.         # Create one big TIFF
125.         echo "Combining TIFF images..."
126.         tiffcp -c lzw $TEMPDIR/scan2pdftiff* $TEMPDIR/scan2pdftemp.tif
127.         # Create PDF
128.         echo "Creating PDF document..."
129.         tiff2pdf -z $TEMPDIR/scan2pdftemp.tif -o $TEMPDIR/scan2pdftemp.pdf -a "$AUTHOR" -t "$TITLE" -k "$KEYWORD"
130.         #Optimize for faster viewing
131.         echo "Optimizing PDF..."
132.         pdfopt $TEMPDIR/scan2pdftemp.pdf $TARGETDIR/$PDFNAME.pdf
133.         # Check if anything looks fine
134.         if [[ -f $TARGETDIR/$PDFNAME.pdf ]] ; then
135.                 cleanup
136.                 echo "$PDFNAME.pdf was created at $TARGETDIR"
137.                 exit $EXIT_SUCCESS
138.         else    echo ""
139.                 echo "An error occured, temporary files were not deleted."
140.                 echo "Call $SCRIPTNAME -c to cleanup"
141.                 exit $EXIT_ERROR
142.         fi
143. }
144.        
145. # Check for Options using getopts
146. while getopts ':hbn:ca:t:k:' OPTION ; do
147.         case $OPTION in
148.         h)      usage $EXIT_SUCCESS
149.                 ;;
150.         b)      BUTTON="true"
151.                 ;;
152.         c)      CLEANUP="true"
153.                 ;;
154.         a)      AUTHOR="$OPTARG"
155.                 ;;
156.         t)      TITLE="$OPTARG"
157.                 ;;
158.         k)      KEYWORD="$OPTARG"
159.                 ;;
160.        
161.         \?)     echo "Unknown option \"-$OPTARG\"." >&2
162.                 usage $EXIT_ERROR
163.                 ;;
164.  
165.         :)      echo "Option \"-$OPTARG\" needs an argument." >&2
166.                 usage $EXIT_ERROR
167.                 ;;
168.         *)        echo "This should never happen..." >&2
169.                 usage $EXIT_BUG
170.                 ;;
171.         esac
172. done
173.  
174. # Skip already handled arguments
175. shift $(( OPTIND - 1 ))
176.  
177. # Check for cleanup request
178. if [[ $CLEANUP = true ]]; then cleanup
179.         exit $EXIT_SUCCESS
180. fi
181.  
182. # Test for at least one remaining argument here and set $PDFNAME
183. if (( $# < 1 )) ; then
184.         usage $EXIT_ERROR
185.         else PDFNAME=$1
186. fi
187.  
188. # Check for the target directory
189. if [[ ! -d $TARGETDIR ]] ; then mkdir $TARGETDIR
190.         if [[ ! -d $TARGETDIR ]] ; then exit $EXIT_ERROR
191.         fi
192. fi
193.  
194. # Check for the temporary directory
195. if [[ ! -d $TEMPDIR ]] ; then mkdir $TEMPDIR
196.         if [[ ! -d $TEMPDIR ]] ; then exit $EXIT_ERROR
197.         fi
198. fi
199.  
200. # Check if target or temporary files already exist
201. initcheck
202.  
203. # Use the scanners button for batch-mode?
204. if [[ $BUTTON = true ]] ; then button
205.         else nobutton
206. fi
207.  
208. # Still buggy :(
209. echo "This should never happen!"       
210. exit $EXIT_BUG

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