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pdfScale.sh
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pdfScale.sh
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#!/usr/bin/env bash
# pdfScale.sh
#
# Scale PDF to specified percentage of original size.
#
# Gustavo Arnosti Neves - 2016 / 07 / 10
# Latest Version - 2018 / 05 / 26
#
# This script: https://github.com/tavinus/pdfScale
# Based on: http://ma.juii.net/blog/scale-page-content-of-pdf-files
# And: https://gist.github.com/MichaelJCole/86e4968dbfc13256228a
VERSION="2.3.9"
###################### EXTERNAL PROGRAMS #######################
GSBIN="" # GhostScript Binary
BCBIN="" # BC Math Binary
IDBIN="" # Identify Binary
PDFINFOBIN="" # PDF Info Binary
MDLSBIN="" # MacOS mdls Binary
##################### ENVIRONMENT SET-UP #######################
LC_MEASUREMENT="C" # To make sure our numbers have .decimals
LC_ALL="C" # Some languages use , as decimal token
LC_CTYPE="C"
LC_NUMERIC="C"
TRUE=0 # Silly stuff
FALSE=1
########################### GLOBALS ############################
SCALE="0.95" # scaling factor (0.95 = 95%, e.g.)
VERBOSE=0 # verbosity Level
PDFSCALE_NAME="$(basename $0)" # simplified name of this script
OSNAME="$(uname 2>/dev/null)" # Check where we are running
GS_RUN_STATUS="" # Holds GS error messages, signals errors
INFILEPDF="" # Input PDF file name
OUTFILEPDF="" # Output PDF file name
JUST_IDENTIFY=$FALSE # Flag to just show PDF info
ABORT_ON_OVERWRITE=$FALSE # Flag to abort if OUTFILEPDF already exists
ADAPTIVEMODE=$TRUE # Automatically try to guess best mode
AUTOMATIC_SCALING=$TRUE # Default scaling in $SCALE, disabled in resize mode
MODE="" # Which page size detection to use
RESIZE_PAPER_TYPE="" # Pre-defined paper to use
CUSTOM_RESIZE_PAPER=$FALSE # If we are using a custom-defined paper
FLIP_DETECTION=$TRUE # If we should run the Flip-detection
FLIP_FORCE=$FALSE # If we should force Flipping
AUTO_ROTATION='/PageByPage' # GS call auto-rotation setting
PGWIDTH="" # Input PDF Page Width
PGHEIGHT="" # Input PDF Page Height
RESIZE_WIDTH="" # Resized PDF Page Width
RESIZE_HEIGHT="" # Resized PDF Page Height
############################# Image resolution (dpi)
IMAGE_RESOLUTION=300 # 300 is /Printer default
############################# Image compression setting
# default screen ebook printer prepress
# ColorImageDownsampleType /Subsample /Average /Bicubic /Bicubic /Bicubic
IMAGE_DOWNSAMPLE_TYPE='/Bicubic'
############################# default PDF profile
# /screen /ebook /printer /prepress /default
# -dPDFSETTINGS=/screen (screen-view-only quality, 72 dpi images)
# -dPDFSETTINGS=/ebook (low quality, 150 dpi images)
# -dPDFSETTINGS=/printer (high quality, 300 dpi images)
# -dPDFSETTINGS=/prepress (high quality, color preserving, 300 dpi imgs)
# -dPDFSETTINGS=/default (almost identical to /screen)
PDF_SETTINGS='/printer'
############################# default Scaling alignment
VERT_ALIGN="CENTER"
HOR_ALIGN="CENTER"
############################# Translation Offset to apply
XTRANSOFFSET=0.0
YTRANSOFFSET=0.0
############################# Execution Flags
SIMULATE=$FALSE # Avoid execution
PRINT_GS_CALL=$FALSE # Print GS Call to stdout
GS_CALL_STRING="" # Buffer
############################# Project Info
PROJECT_NAME="pdfScale"
PROJECT_URL="https://github.com/tavinus/$PROJECT_NAME"
PROJECT_BRANCH='master'
HTTPS_INSECURE=$FALSE
ASSUME_YES=$FALSE
RUN_SELF_INSTALL=$FALSE
TARGET_LOC="/usr/local/bin/pdfscale"
########################## EXIT FLAGS ##########################
EXIT_SUCCESS=0
EXIT_ERROR=1
EXIT_INVALID_PAGE_SIZE_DETECTED=10
EXIT_FILE_NOT_FOUND=20
EXIT_INPUT_NOT_PDF=21
EXIT_INVALID_OPTION=22
EXIT_NO_INPUT_FILE=23
EXIT_INVALID_SCALE=24
EXIT_MISSING_DEPENDENCY=25
EXIT_IMAGEMAGIK_NOT_FOUND=26
EXIT_MAC_MDLS_NOT_FOUND=27
EXIT_PDFINFO_NOT_FOUND=28
EXIT_NOWRITE_PERMISSION=29
EXIT_NOREAD_PERMISSION=30
EXIT_TEMP_FILE_EXISTS=40
EXIT_INVALID_PAPER_SIZE=50
EXIT_INVALID_IMAGE_RESOLUTION=51
############################# MAIN #############################
# Main function called at the end
main() {
printPDFSizes # may exit here
local finalRet=$EXIT_ERROR
if isMixedMode; then
initMain " Mixed Tasks: Resize & Scale"
local tempFile=""
local tempSuffix="$RANDOM$RANDOM""_TEMP_$RANDOM$RANDOM.pdf"
outputFile="$OUTFILEPDF" # backup outFile name
tempFile="${OUTFILEPDF%.pdf}.$tempSuffix" # set a temp file name
if isFile "$tempFile"; then
printError $'Error! Temporary file name already exists!\n'"File: $tempFile"$'\nAborting execution to avoid overwriting the file.\nPlease Try again...'
exit $EXIT_TEMP_FILE_EXISTS
fi
OUTFILEPDF="$tempFile" # set output to tmp file
pageResize # resize to tmp file
finalRet=$?
INFILEPDF="$tempFile" # get tmp file as input
OUTFILEPDF="$outputFile" # reset final target
PGWIDTH=$RESIZE_WIDTH # we already know the new page size
PGHEIGHT=$RESIZE_HEIGHT # from the last command (Resize)
vPrintPageSizes ' New'
vPrintScaleFactor
pageScale # scale the resized pdf
finalRet=$(($finalRet+$?))
# remove tmp file
if isFile "$tempFile"; then
rm "$tempFile" >/dev/null 2>&1 || printError "Error when removing temporary file: $tempFile"
fi
elif isResizeMode; then
initMain " Single Task: Resize PDF Paper"
vPrintScaleFactor "Disabled (resize only)"
pageResize
finalRet=$?
else
initMain " Single Task: Scale PDF Contents"
local scaleMode=""
isManualScaledMode && scaleMode='(manual)' || scaleMode='(auto)'
vPrintScaleFactor "$SCALE $scaleMode"
pageScale
finalRet=$?
fi
if [[ $finalRet -eq $EXIT_SUCCESS ]] && isEmpty "$GS_RUN_STATUS"; then
if isDryRun; then
vprint " Final Status: Simulation completed successfully"
else
vprint " Final Status: File created successfully"
fi
else
vprint " Final Status: Error detected. Exit status: $finalRet"
printError "PdfScale: ERROR!"$'\n'"Ghostscript Debug Info:"$'\n'"$GS_RUN_STATUS"
fi
if isNotEmpty "$GS_CALL_STRING" && shouldPrintGSCall; then
printf "%s" "$GS_CALL_STRING"
fi
return $finalRet
}
# Initializes PDF processing for all modes of operation
initMain() {
printVersion 1 'verbose'
isNotEmpty "$1" && vprint "$1"
local sim="FALSE"
isDryRun && sim="TRUE (Simulating)"
vprint " Dry-Run: $sim"
vPrintFileInfo
getPageSize
vPrintPageSizes ' Source'
}
# Prints PDF Info and exits with $EXIT_SUCCESS, but only if $JUST_IDENTIFY is $TRUE
printPDFSizes() {
if [[ $JUST_IDENTIFY -eq $TRUE ]]; then
VERBOSE=0
printVersion 3 " - Paper Sizes"
getPageSize || initError "Could not get pagesize!"
local paperType="$(getGSPaperName $PGWIDTH $PGHEIGHT)"
isEmpty "$paperType" && paperType="Custom Paper Size"
printf '%s\n' "------------+-----------------------------"
printf " File | %s\n" "$(basename "$INFILEPDF")"
printf " Paper Type | %s\n" "$paperType"
printf '%s\n' "------------+-----------------------------"
printf '%s\n' " | WIDTH x HEIGHT"
printf " Points | %+8s x %-8s\n" "$PGWIDTH" "$PGHEIGHT"
printf " Milimeters | %+8s x %-8s\n" "$(pointsToMilimeters $PGWIDTH)" "$(pointsToMilimeters $PGHEIGHT)"
printf " Inches | %+8s x %-8s\n" "$(pointsToInches $PGWIDTH)" "$(pointsToInches $PGHEIGHT)"
exit $EXIT_SUCCESS
fi
return $EXIT_SUCCESS
}
###################### GHOSTSCRIPT CALLS #######################
# Runs the ghostscript scaling script
pageScale() {
# Compute translation factors to position pages
CENTERXTRANS=$(echo "scale=6; 0.5*(1.0-$SCALE)/$SCALE*$PGWIDTH" | "$BCBIN")
CENTERYTRANS=$(echo "scale=6; 0.5*(1.0-$SCALE)/$SCALE*$PGHEIGHT" | "$BCBIN")
BXTRANS=$CENTERXTRANS
BYTRANS=$CENTERYTRANS
if [[ "$VERT_ALIGN" = "TOP" ]]; then
BYTRANS=$(echo "scale=6; 2*$CENTERYTRANS" | "$BCBIN")
elif [[ "$VERT_ALIGN" = "BOTTOM" ]]; then
BYTRANS=0
fi
if [[ "$HOR_ALIGN" = "LEFT" ]]; then
BXTRANS=0
elif [[ "$HOR_ALIGN" = "RIGHT" ]]; then
BXTRANS=$(echo "scale=6; 2*$CENTERXTRANS" | "$BCBIN")
fi
vprint " Vert-Align: $VERT_ALIGN"
vprint " Hor-Align: $HOR_ALIGN"
XTRANS=$(echo "scale=6; $BXTRANS + $XTRANSOFFSET" | "$BCBIN")
YTRANS=$(echo "scale=6; $BYTRANS + $YTRANSOFFSET" | "$BCBIN")
vprint "$(printf ' Translation X: %.2f = %.2f + %.2f (offset)' $XTRANS $BXTRANS $XTRANSOFFSET)"
vprint "$(printf ' Translation Y: %.2f = %.2f + %.2f (offset)' $YTRANS $BYTRANS $YTRANSOFFSET)"
local increase=$(echo "scale=0; (($SCALE - 1) * 100)/1" | "$BCBIN")
vprint " Run Scaling: $increase %"
GS_RUN_STATUS="$GS_RUN_STATUS""$(gsPageScale 2>&1)"
GS_CALL_STRING="$GS_CALL_STRING"$'[GS SCALE CALL STARTS]\n'"$(gsPrintPageScale)"$'\n[GS SCALE CALL ENDS]\n'
return $? # Last command is always returned I think
}
# Runs GS call for scaling, nothing else should run here
gsPageScale() {
if isDryRun; then
return $TRUE
fi
# Scale page
"$GSBIN" \
-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dSAFER \
-dCompatibilityLevel="1.5" -dPDFSETTINGS="$PDF_SETTINGS" \
-dColorImageResolution=$IMAGE_RESOLUTION -dGrayImageResolution=$IMAGE_RESOLUTION \
-dColorImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" -dGrayImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" \
-dColorConversionStrategy=/LeaveColorUnchanged \
-dSubsetFonts=true -dEmbedAllFonts=true \
-dDEVICEWIDTHPOINTS=$PGWIDTH -dDEVICEHEIGHTPOINTS=$PGHEIGHT \
-sOutputFile="$OUTFILEPDF" \
-c "<</BeginPage{$SCALE $SCALE scale $XTRANS $YTRANS translate}>> setpagedevice" \
-f "$INFILEPDF"
}
# Prints GS call for scaling
gsPrintPageScale() {
local _call_str=""
# Print Scale page command
read -d '' _call_str<< _EOF_
"$GSBIN" \
-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dSAFER \
-dCompatibilityLevel="1.5" -dPDFSETTINGS="$PDF_SETTINGS" \
-dColorImageResolution=$IMAGE_RESOLUTION -dGrayImageResolution=$IMAGE_RESOLUTION \
-dColorImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" -dGrayImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" \
-dColorConversionStrategy=/LeaveColorUnchanged \
-dSubsetFonts=true -dEmbedAllFonts=true \
-dDEVICEWIDTHPOINTS=$PGWIDTH -dDEVICEHEIGHTPOINTS=$PGHEIGHT \
-sOutputFile="$OUTFILEPDF" \
-c "<</BeginPage{$SCALE $SCALE scale $XTRANS $YTRANS translate}>> setpagedevice" \
-f "$INFILEPDF"
_EOF_
echo -ne "$_call_str"
}
# Runs the ghostscript paper resize script
pageResize() {
# Get paper sizes from source if not resizing
isResizePaperSource && { RESIZE_WIDTH=$PGWIDTH; RESIZE_HEIGHT=$PGHEIGHT; }
# Get new paper sizes if not custom or source paper
isNotCustomPaper && ! isResizePaperSource && getGSPaperSize "$RESIZE_PAPER_TYPE"
vprint " Auto Rotate: $(basename $AUTO_ROTATION)"
runFlipDetect
vprint " Run Resizing: $(uppercase "$RESIZE_PAPER_TYPE") ( "$RESIZE_WIDTH" x "$RESIZE_HEIGHT" ) pts"
GS_RUN_STATUS="$GS_RUN_STATUS""$(gsPageResize 2>&1)"
GS_CALL_STRING="$GS_CALL_STRING"$'[GS RESIZE CALL STARTS]\n'"$(gsPrintPageResize)"$'\n[GS RESIZE CALL ENDS]\n'
return $?
}
# Runs GS call for resizing, nothing else should run here
gsPageResize() {
if isDryRun; then
return $TRUE
fi
# Change page size
"$GSBIN" \
-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dSAFER \
-dCompatibilityLevel="1.5" -dPDFSETTINGS="$PDF_SETTINGS" \
-dColorImageResolution=$IMAGE_RESOLUTION -dGrayImageResolution=$IMAGE_RESOLUTION \
-dColorImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" -dGrayImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" \
-dColorConversionStrategy=/LeaveColorUnchanged \
-dSubsetFonts=true -dEmbedAllFonts=true \
-dDEVICEWIDTHPOINTS=$RESIZE_WIDTH -dDEVICEHEIGHTPOINTS=$RESIZE_HEIGHT \
-dAutoRotatePages=$AUTO_ROTATION \
-dFIXEDMEDIA -dPDFFitPage \
-sOutputFile="$OUTFILEPDF" \
-f "$INFILEPDF"
return $?
}
# Prints GS call for resizing
gsPrintPageResize() {
# Print Resize page command
local _call_str=""
# Print Scale page command
read -d '' _call_str<< _EOF_
"$GSBIN" \
-q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dSAFER \
-dCompatibilityLevel="1.5" -dPDFSETTINGS="$PDF_SETTINGS" \
-dColorImageResolution=$IMAGE_RESOLUTION -dGrayImageResolution=$IMAGE_RESOLUTION \
-dColorImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" -dGrayImageDownsampleType="$IMAGE_DOWNSAMPLE_TYPE" \
-dColorConversionStrategy=/LeaveColorUnchanged \
-dSubsetFonts=true -dEmbedAllFonts=true \
-dDEVICEWIDTHPOINTS=$RESIZE_WIDTH -dDEVICEHEIGHTPOINTS=$RESIZE_HEIGHT \
-dAutoRotatePages=$AUTO_ROTATION \
-dFIXEDMEDIA -dPDFFitPage \
-sOutputFile="$OUTFILEPDF" \
-f "$INFILEPDF"
_EOF_
echo -ne "$_call_str"
}
# Returns $TRUE if we should use the source paper size, $FALSE otherwise
isResizePaperSource() {
[[ "$RESIZE_PAPER_TYPE" = 'source' ]] && return $TRUE
return $FALSE
}
# Filp-Detect Logic
runFlipDetect() {
if isFlipForced; then
vprint " Flip Detect: Forced Mode!"
applyFlipRevert
elif isFlipDetectionEnabled && shouldFlip; then
vprint " Flip Detect: Wrong orientation detected!"
applyFlipRevert
elif ! isFlipDetectionEnabled; then
vprint " Flip Detect: Disabled"
else
vprint " Flip Detect: No change needed"
fi
}
# Inverts $RESIZE_HEIGHT with $RESIZE_WIDTH
applyFlipRevert() {
local tmpInverter=""
tmpInverter=$RESIZE_HEIGHT
RESIZE_HEIGHT=$RESIZE_WIDTH
RESIZE_WIDTH=$tmpInverter
vprint " Inverting Width <-> Height"
}
# Returns the $FLIP_DETECTION flag
isFlipDetectionEnabled() {
return $FLIP_DETECTION
}
# Returns the $FLIP_FORCE flag
isFlipForced() {
return $FLIP_FORCE
}
# Returns $TRUE if the the paper size will invert orientation from source, $FALSE otherwise
shouldFlip() {
[[ $PGWIDTH -gt $PGHEIGHT && $RESIZE_WIDTH -lt $RESIZE_HEIGHT ]] || [[ $PGWIDTH -lt $PGHEIGHT && $RESIZE_WIDTH -gt $RESIZE_HEIGHT ]] && return $TRUE
return $FALSE
}
########################## INITIALIZERS #########################
# Loads external dependencies and checks for errors
initDeps() {
GREPBIN="$(which grep 2>/dev/null)"
GSBIN="$(which gs 2>/dev/null)"
BCBIN="$(which bc 2>/dev/null)"
IDBIN=$(which identify 2>/dev/null)
MDLSBIN="$(which mdls 2>/dev/null)"
PDFINFOBIN="$(which pdfinfo 2>/dev/null)"
vprint "Checking for basename, grep, ghostscript and bcmath"
basename "" >/dev/null 2>&1 || printDependency 'basename'
isNotAvailable "$GREPBIN" && printDependency 'grep'
isNotAvailable "$GSBIN" && printDependency 'ghostscript'
isNotAvailable "$BCBIN" && printDependency 'bc'
return $TRUE
}
# Checks for dependencies errors, run after getting options
checkDeps() {
if [[ $MODE = "IDENTIFY" ]]; then
vprint "Checking for imagemagick's identify"
if isNotAvailable "$IDBIN"; then printDependency 'imagemagick'; fi
fi
if [[ $MODE = "PDFINFO" ]]; then
vprint "Checking for pdfinfo"
if isNotAvailable "$PDFINFOBIN"; then printDependency 'pdfinfo'; fi
fi
if [[ $MODE = "MDLS" ]]; then
vprint "Checking for MacOS mdls"
if isNotAvailable "$MDLSBIN"; then
initError 'mdls executable was not found! Is this even MacOS?' $EXIT_MAC_MDLS_NOT_FOUND
fi
fi
return $TRUE
}
######################### CLI OPTIONS ##########################
# Parse options
getOptions() {
local _optArgs=() # things that do not start with a '-'
local _tgtFile="" # to set $OUTFILEPDF
local _currParam="" # to enable case-insensitiveness
while [ ${#} -gt 0 ]; do
if [[ "${1:0:2}" = '--' ]]; then
# Long Option, get lowercase version
_currParam="$(lowercase ${1})"
elif [[ "${1:0:1}" = '-' ]]; then
# short Option, just assign
_currParam="${1}"
else
# file name arguments, store as is and reset loop
_optArgs+=("$1")
shift
continue
fi
case "$_currParam" in
-v|--verbose)
((VERBOSE++))
shift
;;
-n|--no-overwrite|--nooverwrite)
ABORT_ON_OVERWRITE=$TRUE
shift
;;
-h|--help)
printHelp
exit $EXIT_SUCCESS
;;
-V|--version)
printVersion 3
exit $EXIT_SUCCESS
;;
-i|--identify|--info)
JUST_IDENTIFY=$TRUE
shift
;;
-s|--scale|--setscale|--set-scale)
shift
parseScale "$1"
shift
;;
-m|--mode|--paperdetect|--paper-detect|--pagesizemode|--page-size-mode)
shift
parseMode "$1"
shift
;;
-r|--resize)
shift
parsePaperResize "$1"
shift
;;
-p|--printpapers|--print-papers|--listpapers|--list-papers)
printPaperInfo
exit $EXIT_SUCCESS
;;
-f|--flipdetection|--flip-detection|--flip-mode|--flipmode|--flipdetect|--flip-detect)
shift
parseFlipDetectionMode "$1"
shift
;;
-a|--autorotation|--auto-rotation|--autorotate|--auto-rotate)
shift
parseAutoRotationMode "$1"
shift
;;
--pdf-settings)
shift
parsePDFSettings "$1"
shift
;;
--image-downsample)
shift
parseImageDownSample "$1"
shift
;;
--image-resolution)
shift
parseImageResolution "$1"
shift
;;
--horizontal-alignment|--hor-align|--xalign|--x-align)
shift
parseHorizontalAlignment "$1"
shift
;;
--vertical-alignment|--ver-align|--vert-align|--yalign|--y-align)
shift
parseVerticalAlignment "$1"
shift
;;
--xtrans|--xtrans-offset|--xoffset)
shift
parseXTransOffset "$1"
shift
;;
--ytrans|--ytrans-offset|--yoffset)
shift
parseYTransOffset "$1"
shift
;;
--simulate|--dry-run)
SIMULATE=$TRUE
shift
;;
--install|--self-install)
RUN_SELF_INSTALL=$TRUE
shift
if [[ ${1:0:1} != "-" ]]; then
TARGET_LOC="$1"
shift
fi
;;
--upgrade|--self-upgrade)
RUN_SELF_UPGRADE=$TRUE
shift
;;
--insecure|--no-check-certificate)
HTTPS_INSECURE=$TRUE
shift
;;
--yes|--assume-yes)
ASSUME_YES=$TRUE
shift
;;
--print-gs-call|--gs-call)
PRINT_GS_CALL=$TRUE
shift
;;
*)
initError "Invalid Parameter: \"$1\"" $EXIT_INVALID_OPTION
;;
esac
done
shouldInstall && selfInstall "$TARGET_LOC" # WILL EXIT HERE
shouldUpgrade && selfUpgrade # WILL EXIT HERE
isEmpty "${_optArgs[2]}" || initError "Seems like you passed an extra file name?"$'\n'"Invalid option: ${_optArgs[2]}" $EXIT_INVALID_OPTION
if [[ $JUST_IDENTIFY -eq $TRUE ]]; then
isEmpty "${_optArgs[1]}" || initError "Seems like you passed an extra file name?"$'\n'"Invalid option: ${_optArgs[1]}" $EXIT_INVALID_OPTION
VERBOSE=0 # remove verboseness if present
fi
# Validate input PDF file
INFILEPDF="${_optArgs[0]}"
isEmpty "$INFILEPDF" && initError "Input file is empty!" $EXIT_NO_INPUT_FILE
isPDF "$INFILEPDF" || initError "Input file is not a PDF file: $INFILEPDF" $EXIT_INPUT_NOT_PDF
isFile "$INFILEPDF" || initError "Input file not found: $INFILEPDF" $EXIT_FILE_NOT_FOUND
isReadable "$INFILEPDF" || initError "No read access to input file: $INFILEPDF"$'\nPermission Denied' $EXIT_NOREAD_PERMISSION
checkDeps
if [[ $JUST_IDENTIFY -eq $TRUE ]]; then
return $TRUE # no need to get output file, so return already
fi
_tgtFile="${_optArgs[1]}"
local _autoName="${INFILEPDF%.*}" # remove possible stupid extension, like .pDF
if isMixedMode; then
isEmpty "$_tgtFile" && OUTFILEPDF="${_autoName}.$(uppercase $RESIZE_PAPER_TYPE).SCALED.pdf"
elif isResizeMode; then
isEmpty "$_tgtFile" && OUTFILEPDF="${_autoName}.$(uppercase $RESIZE_PAPER_TYPE).pdf"
else
isEmpty "$_tgtFile" && OUTFILEPDF="${_autoName}.SCALED.pdf"
fi
isNotEmpty "$_tgtFile" && OUTFILEPDF="${_tgtFile%.pdf}.pdf"
validateOutFile
}
# Returns $TRUE if the install flag is set
shouldInstall() {
return $RUN_SELF_INSTALL
}
# Returns $TRUE if the upgrade flag is set
shouldUpgrade() {
return $RUN_SELF_UPGRADE
}
# Install pdfScale
selfInstall() {
CURRENT_LOC="$(readlink -f $0)"
TARGET_LOC="$1"
isEmpty "$TARGET_LOC" && TARGET_LOC="/usr/local/bin/pdfscale"
VERBOSE=0
NEED_SUDO=$FALSE
printVersion 3 " - Self Install"
echo ""
echo "Current location : $CURRENT_LOC"
echo "Target location : $TARGET_LOC"
if [[ "$CURRENT_LOC" = "$TARGET_LOC" ]]; then
echo $'\n'"Error! Source and Target locations are the same!"
echo "Cannot copy to itself..."
exit $EXIT_INVALID_OPTION
fi
TARGET_FOLDER="$(dirname $TARGET_LOC)"
local _answer="NO"
if isNotDir "$TARGET_FOLDER"; then
echo $'\nThe target folder does not exist\n > '"$TARGET_FOLDER"
if assumeYes; then
echo ''
_answer="y"
else
read -p $'\nCreate the target folder? Y/y to continue > ' _answer
_answer="$(lowercase $_answer)"
fi
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
_answer="no"
if mkdir -p "$TARGET_FOLDER" 2>/dev/null; then
echo " > Folder Created!"
else
echo $'\n'"There was an error when trying to create the folder."
if assumeYes; then
echo $'\nTrying again with sudo, enter password if needed > '
_answer="y"
else
read -p $'\nDo you want to try again with sudo (as root)? Y/y to continue > ' _answer
_answer="$(lowercase $_answer)"
fi
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
NEED_SUDO=$TRUE
if sudo mkdir -p "$TARGET_FOLDER" 2>/dev/null; then
echo "Folder Created!"
else
echo "There was an error when trying to create the folder."
exit $EXIT_ERROR
fi
else
echo "Exiting..."
exit $EXIT_ERROR
fi
fi
else
echo "Exiting... (cancelled by user)"
exit $EXIT_ERROR
fi
fi
_answer="no"
if isFile "$TARGET_LOC"; then
echo $'\n'"The target file already exists: $TARGET_LOC"
if assumeYes; then
_answer="y"
else
read -p "Y/y to overwrite, anything else to cancel > " _answer
_answer="$(lowercase $_answer)"
fi
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
echo "Target will be replaced!"
else
echo "Exiting... (cancelled by user)"
exit $EXIT_ERROR
fi
fi
if [[ $NEED_SUDO -eq $TRUE ]]; then
if sudo cp "$CURRENT_LOC" "$TARGET_LOC"; then
echo $'\nSuccess! Program installed!'
echo " > $TARGET_LOC"
exit $EXIT_SUCCESS
else
echo "There was an error when trying to install the program."
exit $EXIT_ERROR
fi
fi
if cp "$CURRENT_LOC" "$TARGET_LOC"; then
echo $'\nSuccess! Program installed!'
echo " > $TARGET_LOC"
exit $EXIT_SUCCESS
else
_answer="no"
echo "There was an error when trying to install pdfScale."
if assumeYes; then
echo $'\nTrying again with sudo, enter password if needed > '
_answer="y"
else
read -p $'Do you want to try again with sudo (as root)? Y/y to continue > ' _answer
_answer="$(lowercase $_answer)"
fi
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
NEED_SUDO=$TRUE
if sudo cp "$CURRENT_LOC" "$TARGET_LOC"; then
echo $'\nSuccess! Program installed!'
echo " > $TARGET_LOC"
exit $EXIT_SUCCESS
else
echo "There was an error when trying to install the program."
exit $EXIT_ERROR
fi
else
echo "Exiting... (cancelled by user)"
exit $EXIT_ERROR
fi
fi
exit $EXIT_ERROR
}
# Tries to download with curl or wget
getUrl() {
useInsecure && echo $'\nHTTPS Insecure flag is enabled!\nCertificates will be ignored by curl/wget\n'
local url="$1"
local target="$2"
local _stat=""
if isEmpty "$url" || isEmpty "$target"; then
echo "Error! Invalid parameters for download."
echo "URL > $url"
echo "TARGET > $target"
exit $EXIT_INVALID_OPTION
fi
WGET_BIN="$(which wget 2>/dev/null)"
CURL_BIN="$(which curl 2>/dev/null)"
if isExecutable "$WGET_BIN"; then
useInsecure && WGET_BIN="$WGET_BIN --no-check-certificate"
echo "Downloading file with wget"
_stat="$($WGET_BIN -O "$target" "$url" 2>&1)"
if [[ $? -eq 0 ]]; then
return $TRUE
else
echo "Error when downloading file!"
echo " > $url"
echo "Status:"
echo "$_stat"
exit $EXIT_ERROR
fi
elif isExecutable "$CURL_BIN"; then
useInsecure && CURL_BIN="$CURL_BIN --insecure"
echo "Downloading file with curl"
_stat="$($CURL_BIN -o "$target" "$url" 2>&1)"
if [[ $? -eq 0 ]]; then
return $TRUE
else
echo "Error when downloading file!"
echo " > $url"
echo "Status:"
echo "$_stat"
exit $EXIT_ERROR
fi
else
echo "Error! Could not find Wget or Curl to perform download."
echo "Please install either curl or wget and try again."
exit $EXIT_FILE_NOT_FOUND
fi
}
# Tries to remove temporary files from upgrade
clearUpgrade() {
echo $'\nCleaning up downloaded files from /tmp'
if isFile "$TMP_TARGET"; then
echo -n " > $TMP_TARGET > "
rm "$TMP_TARGET" 2>/dev/null && echo "Ok" || echo "Fail"
else
echo " > no temporary tarball was found to remove"
fi
if isDir "$TMP_EXTRACTED"; then
echo -n " > $TMP_EXTRACTED > "
rm -rf "$TMP_EXTRACTED" 2>/dev/null && echo "Ok" || echo "Fail"
else
echo " > no temporary master folder was found to remove"
fi
}
# Exit upgrade with message and status code
# $1 Mensagem (printed if not empty)
# $2 Status (defaults to $EXIT_ERROR)
exitUpgrade() {
isDir "$_cwd" && cd "$_cwd"
isNotEmpty "$1" && echo "$1"
clearUpgrade
isNotEmpty "$2" && exit $2
exit $EXIT_ERROR
}
# Downloads current version from github's MASTER branch
selfUpgrade() {
CURRENT_LOC="$(readlink -f $0)"
_cwd="$(pwd)"
local _cur_tstamp="$(date '+%Y%m%d-%H%M%S')"
TMP_DIR='/tmp'
TMP_TARGET="$TMP_DIR/pdfScale_$_cur_tstamp.tar.gz"
TMP_EXTRACTED="$TMP_DIR/$PROJECT_NAME-$PROJECT_BRANCH"
local _answer="no"
printVersion 3 " - Self Upgrade"
echo $'\n'"Preparing download to temp folder"
echo " > $TMP_TARGET"
getUrl "$PROJECT_URL/archive/$PROJECT_BRANCH.tar.gz" "$TMP_TARGET"
if isNotFile "$TMP_TARGET"; then
echo "Error! Could not find downloaded file!"
exit $EXIT_FILE_NOT_FOUND
fi
echo $'\n'"Extracting compressed file"
cd "$TMP_DIR"
if ! (tar xzf "$TMP_TARGET" 2>/dev/null || gtar xzf "$TMP_TARGET" 2>/dev/null); then
exitUpgrade "Extraction error."
fi
if ! cd "$TMP_EXTRACTED" 2>/dev/null; then
exitUpgrade $'Error when accessing temporary folder\n > '"$TMP_EXTRACTED"
fi
if ! chmod +x pdfScale.sh; then
exitUpgrade $'Error when setting new pdfScale to executable\n > '"$TMP_EXTRACTED/pdfScale.sh"
fi
local newver="$(./pdfScale.sh --version 2>/dev/null)"
local curver="$(printVersion 3 2>/dev/null)"
newver=($newver)
curver=($curver)
newver=${newver[1]#v}
curver=${curver[1]#v}
echo $'\n'" Current Version is: $curver"
echo "Downloaded Version is: $newver"$'\n'
if [[ "$newver" = "$curver" ]]; then
echo "Seems like we have downloaded the same version that is installed."
elif isBiggerVersion "$newver" "$curver"; then
echo "Seems like the downloaded version is newer that the one installed."
elif isBiggerVersion "$curver" "$newver"; then
echo "Seems like the downloaded version is older that the one installed."
echo "It is basically a miracle or you have came from the future with this version!"
echo "BE CAREFUL NOT TO DELETE THE BETA/ALPHA VERSION WITH THIS UPDATE!"
else
exitUpgrade "An unidentified error has ocurred. Exiting..."
fi
if assumeYes; then
echo $'\n'"Assume yes activated, current version will be replaced with master branch"
_answer="y"
else
echo $'\n'"Are you sure that you want to replace the current installation with the downloaded one?"
read -p "Y/y to continue, anything else to cancel > " _answer
_answer="$(lowercase $_answer)"
fi
echo
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
echo "Upgrading..."
if cp "./pdfScale.sh" "$CURRENT_LOC" 2>/dev/null; then
exitUpgrade $'\n'"Success! Upgrade finished!"$'\n'" > $CURRENT_LOC" $EXIT_SUCCESS
else
_answer="no"
echo $'\n'"There was an error when copying the new version."
if assumeYes; then
echo $'\nAssume yes activated, retrying with sudo.\nEnter password if needed > \n'
_answer="y"
else
echo "Do you want to retry using sudo (as root)?"
read -p "Y/y to continue, anything else to cancel > " _answer
fi
_answer="$(lowercase $_answer)"
if [[ "$_answer" = "y" || "$_answer" = "yes" ]]; then
echo "Upgrading with sudo..."
if sudo cp "./pdfScale.sh" "$CURRENT_LOC" 2>/dev/null; then
exitUpgrade $'\n'"Success! Upgrade finished!"$'\n'" > $CURRENT_LOC" $EXIT_SUCCESS
else
exitUpgrade "There was an error when copying the new version."
fi
else
exitUpgrade "Exiting... (cancelled by user)"
fi
fi
exitUpgrade "An unidentified error has ocurred. Exiting..."
else
exitUpgrade "Exiting... (cancelled by user)"
fi
exitUpgrade "An unidentified error has ocurred. Exiting..."
}
# Compares versions with x.x.x format
isBiggerVersion() {
local OIFS=$IFS
IFS='.'
local _first=($1)
local _second=($2)
local _ret=$FALSE
if [[ ${_first[0]} -gt ${_second[0]} ]]; then
_ret=$TRUE
elif [[ ${_first[0]} -lt ${_second[0]} ]]; then
_ret=$FALSE
elif [[ ${_first[1]} -gt ${_second[1]} ]]; then
_ret=$TRUE
elif [[ ${_first[1]} -lt ${_second[1]} ]]; then
_ret=$FALSE
elif [[ ${_first[2]} -gt ${_second[2]} ]]; then
_ret=$TRUE
elif [[ ${_first[2]} -lt ${_second[2]} ]]; then
_ret=$FALSE
fi
IFS=$OIFS
return $_ret
}
# Checks if output file is valid and writable
validateOutFile() {
local _tgtDir="$(dirname "$OUTFILEPDF")"
isDir "$_tgtDir" || initError "Output directory does not exist!"$'\n'"Target Dir: $_tgtDir" $EXIT_NOWRITE_PERMISSION
isAbortOnOverwrite && isFile "$OUTFILEPDF" && initError $'Output file already exists and --no-overwrite was used!\nRemove the "-n" or "--no-overwrite" option if you want to overwrite the file\n'"Target File: $OUTFILEPDF" $EXIT_NOWRITE_PERMISSION
isTouchable "$OUTFILEPDF" || initError "Could not get write permission for output file!"$'\n'"Target File: $OUTFILEPDF"$'\nPermission Denied' $EXIT_NOWRITE_PERMISSION
}
# Returns $TRUE if we should not overwrite $OUTFILEPDF, $FALSE otherwise
isAbortOnOverwrite() {
return $ABORT_ON_OVERWRITE
}
# Returns $TRUE if we should print the GS call to stdout
shouldPrintGSCall() {
return $PRINT_GS_CALL
}
# Returns $TRUE if we are simulating, dry-run (no GS execution)
isDryRun() {
return $SIMULATE
}
# Parses and validates the scaling factor
parseScale() {
AUTOMATIC_SCALING=$FALSE
if ! isFloatBiggerThanZero "$1"; then
printError "Invalid factor: $1"
printError "The factor must be a floating point number greater than 0"
printError "Example: for 80% use 0.8"
exit $EXIT_INVALID_SCALE
fi
SCALE="$1"
}
# Parse a forced mode of operation
parseMode() {
local param="$(lowercase $1)"
case "${param}" in
c|catgrep|'cat+grep'|grep|g)
ADAPTIVEMODE=$FALSE
MODE="CATGREP"
return $TRUE
;;
i|imagemagick|identify)
ADAPTIVEMODE=$FALSE
MODE="IDENTIFY"
return $TRUE
;;
m|mdls|quartz|mac)
ADAPTIVEMODE=$FALSE
MODE="MDLS"
return $TRUE
;;
p|pdfinfo)
ADAPTIVEMODE=$FALSE
MODE="PDFINFO"
return $TRUE
;;
a|auto|automatic|adaptive)
ADAPTIVEMODE=$TRUE
MODE=""
return $TRUE
;;
*)