read image metadata

read_metadata.sh

#!/bin/bash

# Needs a few tools to be installed: perl, exiftool and jq.
# Usage: see usage() function next line.

usage()
{
  echo "Usage: $0 [ -u http://ex.org/base/dir/ ] [ -o /dest/path ] [ -l ] -p </complete/path/to/pics>"
  echo "       -p : the absolute path to images. Mandatory."
  echo "       -u : base URL, where manifest.json is located,"
  echo "            default: \"http://localhost:8100\""
  echo "       -o : output directory,"
  echo "            default: \"./new\""
  exit 2
}

if [ "$1" == "" ] ; then
  usage
fi

while getopts "u:o:lp:" option; do
  case "${option}" in
    p)
      PICSPATH=${OPTARG} ; export PICSPATH;
      if [ ! -d $PICSPATH ] # Directory?
      then
        echo "-p value need to be an existing directory"
        usage
      fi;;
    u)
      BASEURL=${OPTARG};;
    o)
      OUT=${OPTARG};;
    l)
      ;;
    :)     # If expected argument omitted...
      echo "Error: -${OPTARG} requires an argument."
      usage;;
    \?)
      echo "Invalid option: -$OPTARG" >&2;;
  esac
done

if [ "$BASEURL" == "" ] ; then
  BASEURL="http://localhost:8100"
fi
echo "base url: $BASEURL"

CURRENT_PATH=$(pwd) ; export CURRENT_PATH ; echo "Current path: $CURRENT_PATH"

if [ "$OUT" == "" ] ; then
  OUT="$CURRENT_PATH/new"
fi
echo "Output directory: $OUT"

# Relative path
echo "Pics path: $PICSPATH"
REL_PATH=$(echo $PICSPATH|perl -ne 'print $1 if m/$ENV{CURRENT_PATH}(.*)/')
echo "Base dir: $REL_PATH"
#exit 2


# exiftool quick doc:
# -qq : -q : quiet and -qq very quiet
# -m : ignore errors
#
# jq playground: https://jqterm.com/

find $PICSPATH -iname "*.JPG" | while read f
do
  # ... loop body
  FILENAME=$(echo $f|perl -ne 'print $2 if m/(.*)\/(.*)$/') ; export FILENAME
  REL_PIC_PATH=$(echo $f|perl -ne 'print $1 if m/$ENV{PICSPATH}(.*)/')
  echo "File: $f"                               # /home/user/path/to/pics/IMG_123.JPG
  echo "Filename: $FILENAME"                    # IMG_123.JPG
  #echo "Output dir: $OUT"                       # /home/user/new
  echo "Creating dir: $OUT$REL_PIC_PATH/full/full/0/"      # /home/user/new/IMG_123.JPG/full/full/0/
  mkdir -p $OUT$REL_PIC_PATH/full/full/0/
  echo "Creating file: $OUT$REL_PIC_PATH/full/full/0/default.jpg" # /home/user/new/IMG_123.JPG/full/full/0/IMG_123.JPG
  cp $f $OUT$REL_PIC_PATH/full/full/0/default.jpg
  echo "Extract tags in info.json in $OUT$REL_PIC_PATH/ directory"
  exiftool -qq -m \
   -ImageHeight -ImageWidth -Creator -CopyrightNotice -license \
   -j "$OUT$REL_PIC_PATH/full/full/0/default.jpg" | tr -d "[" | tr -d "]" \
   | jq --slurp 'add' template.info.json - > $OUT$REL_PIC_PATH/info.pre.json
  perl -pi -e \
    's/"License"/"license"/;s/"ImageHeight"/"height"/;s/"ImageWidth"/"width"/;s///' \
    $OUT$REL_PIC_PATH/info.pre.json
  # {
  #  "@context": "http://iiif.io/api/image/2/context.json",
  #  "@id": "...",
  #  "protocol": "http://iiif.io/api/image",
  #  "SourceFile": "/media/DONNEES/dev.opensource/iiif.static/new/ADIs/20171003.1057.Dolive.3E2086.1652/IMG_5698.JPG/full/full/0/IMG_5698.JPG",
  #  "height": 3456,
  #  "width": 5184,
  #  "Creator": "Charles Nepote",
  #  "CopyrightNotice": "Licence Creative Commons CC-BY 4.0 : https://creativecommons.org/licenses/by/4.0/deed.fr",
  #  "license": "http://creativecommons.org/licenses/by/4.0/"
  # }

  jq '."@id" = "'$BASEURL$REL_PIC_PATH/full/full/0/default.jpg'"' $OUT$REL_PIC_PATH/info.pre.json \
    | jq '. + { "profile" : [ "http://iiif.io/api/image/2/level0.json" ]}' - \
    | jq '. + { "sizes" : [ {"width" : .width, "height": .height } ] }' - \
    > $OUT$REL_PIC_PATH/info.json

  # Target
  # {
  #   "@context" : "http://iiif.io/api/image/2/context.json",
  #   "@id" : "http://www.example.org/IMG_001/",
  #   "protocol" : "http://iiif.io/api/image",
  #   "width" : 6000,
  #   "height" : 4000,
  #   "profile" : [ "http://iiif.io/api/image/2/level2.json" ],
  #   "attribution" : "Provided by Example Organization",
  #   "logo" : "http://example.org/images/logo.png",
  #   "license" : "http://rightsstatements.org/vocab/InC-EDU/1.0/"
  # }
  echo "    "

  # Add key-values for manifest.json
  # https://ronallo.com/iiif-workshop/presentation/image-service.html
  #
  # exiftool -qq -m \
  #  -Title -ImageHeight -ImageWidth -Creator -CopyrightNotice -license -Description \
  #  -j "$OUT/$f/$FILENAME" | tr -d "[" | tr -d "]" \
  #  | jq --slurp 'add' template.manifest.json - > $OUT/$f/manifest.pre.json

done

# python -m SimpleHTTPServer 8000