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OCRmyPDF.sh: fixes #27

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The fix should now be compatible to most implementation of grep
This commit is contained in:
fritz-hh
2013-05-02 16:51:46 +02:00
parent edaa70b97f
commit 9271fe73a8
1 changed files with 5 additions and 6 deletions
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OCRmyPDF.sh
+5 -6
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@@ -152,7 +152,7 @@ cd "`dirname $0`"
today=$(date +"%Y%m%d_%H%M")
fld=$(basename "$FILE_INPUT_PDF" | sed 's/[.][^.]*//')
TMP_FLD="./tmp/$today.filename.$fld"
FILE_TMP="$TMP_FLD/tmp.txt" # temporary file with a very short life used for several things)
FILE_TMP="$TMP_FLD/tmp.txt" # temporary file with a very short lifetime (may be used for several things)
FILE_SIZE_PAGES="$TMP_FLD/page-sizes.txt" # size in pt of the respective page of the input PDF file
FILES_OCRed_PDFS="${TMP_FLD}/*-ocred.pdf" # string matching all 1 page PDF files that need to be merged
FILE_OUTPUT_PDF_CAT="${TMP_FLD}/ocred.pdf" # concatenated OCRed PDF files
@@ -169,9 +169,9 @@ mkdir -p "${TMP_FLD}"
# get the size of each pdf page (width / height) in pt (inch*72)
[ $VERBOSITY -ge $LOG_DEBUG ] && echo "Input file: Extracting size of each page (in pt)"
! identify -format "%w %h\n" "$FILE_INPUT_PDF" > "$FILE_SIZE_PAGES" \
! identify -format "%w %h\n" "$FILE_INPUT_PDF" > "$FILE_TMP" \
&& echo "Could not get size of PDF pages. Exiting..." >&2 && exit $EXIT_BAD_INPUT_FILE
sed -i "" '/^$/d' "$FILE_SIZE_PAGES" # removing empty lines (last one should be)
sed '/^$/d' "$FILE_TMP" > "$FILE_SIZE_PAGES" # removing empty lines (last one should be)
numpages=`cat "$FILE_SIZE_PAGES" | wc -l | sed 's/^ *//g'`
numpages=`printf "%04d" $numpages` # add leading zeros to the page number
@@ -223,9 +223,8 @@ while read pageSize ; do
# - the truncated PDF with/height in pt
# - the precision of dpi value
epsilon=`echo "scale=5;($widthCurImg*72/$widthPDF^2)+($heightCurImg*72/$heightPDF^2)+0.00002" | bc` # max inaccuracy due to truncation of PDF size in pt
diff1=`echo "($dpi_x - $dpi_y) < $epsilon " | bc`
diff2=`echo "($dpi_y - $dpi_x) < $epsilon " | bc`
[ $diff1 -eq 0 -o $diff2 -eq 0 ] && echo "Resolutions difference ($dpi_x/$dpi_y) higher than expected ($epsilon). Exiting..." >&2 && exit $EXIT_BAD_INPUT_FILE
[ `echo "($dpi_x - $dpi_y) < $epsilon " | bc` -eq 0 -o `echo "($dpi_y - $dpi_x) < $epsilon " | bc` -eq 0 ] \
&& echo "Resolutions difference ($dpi_x/$dpi_y) higher than expected ($epsilon). Exiting..." >&2 && exit $EXIT_BAD_INPUT_FILE
dpi=`echo "scale=5;($dpi_x+$dpi_y)/2+0.5" | bc` # adding 0.5 is required for rounding
dpi=`echo "scale=0;$dpi/1" | bc` # round to the nearest integer