Removing trailing spaces.

The conditions used to determine whether or not an image have to be
processed depending on its size were boggus. This commit fixes the
issue, images are now processed as they should.

.gitignore

@@ -1,3 +1,5 @@
 *~
 \#*
 .\#*
+*.swp
+*.vcf

README.md

@@ -0,0 +1,17 @@
+# VCF Compressor
+
+A simple bash script that compress images inside a vCard 3.0.
+
+
+## Requirements
+
+* bash
+* imagemagick
+
+
+## Further reading
+
+* [vCard on Wikipedia](https://en.wikipedia.org/wiki/VCard)
+* vCard 3.0: [RFC 2425](https://tools.ietf.org/html/rfc2425) and [RFC 2426](https://tools.ietf.org/html/rfc2426)
+* vCard 4.0: [RFC 6350](https://tools.ietf.org/html/rfc6350)
+* CardDAV: [RFC 6352](https://tools.ietf.org/html/rfc6352)

vcf_compressor.sh

@@ -1,16 +1,16 @@
 #!/bin/bash
 ## Copyright (c) 2015 Rodolphe Breard
-## 
+##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
 ## the Free Software Foundation, either version 3 of the License, or
 ## (at your option) any later version.
-## 
+##
 ## This program is distributed in the hope that it will be useful,
 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
-## 
+##
 ## You should have received a copy of the GNU General Public License
 ## along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ##
@@ -29,21 +29,46 @@ usage () {
     echo ""
     echo "Options:"
     echo "  -o, --output"
-    echo "  -v, --verbose"
+    echo "  --version"
-    echo "  -V, --version"
     echo "  -h, --help"
     exit "$exit_status"
 }
 
-echo_verbose () {
+raw_img () {
-    if [ $verbose -gt 0 ]; then
+    line="$1"
-        echo "$@"
+
+    echo "$line" | cut -d ":" -f2 | base64 -d
+}
+
+compress_photo () {
+    line="$1"
+    max_width="300"
+    max_height="300"
+
+    prefix=$(echo "$line" | cut -d ":" -f1)
+    width=$(raw_img "$line" | identify -format '%w' -)
+    height=$(raw_img "$line" | identify -format '%h' -)
+    if [ "$width" -gt "$max_width" ] || [ "$height" -gt "$max_height" ] ; then
+        picture=$(raw_img "$line" | convert "-" -quality 50 -resize "${max_width}x${max_height}>" "-" | base64 -w0)
+        echo "$prefix:$picture"
+    else
+        echo "$line"
+    fi
+}
+
+process_line () {
+    line="$1"
+
+    echo "$line" | egrep "^PHOTO;" | grep ";ENCODING=b;" >/dev/null 2>&1
+    if [ $? -eq 0 ]; then
+        compress_photo "$line"
+    else
+        echo "$line"
     fi
 }
 
 input_file=""
 output_file=""
-verbose=0
 
 while :; do
     test $# -gt 0 || break
@@ -57,11 +82,7 @@ while :; do
                 usage
             fi
             ;;
-        -v|--verbose)
+        --version)
-            verbose=1
-            shift
-            ;;
-        -V|--version)
             version
             ;;
         -h|--help)
@@ -79,12 +100,19 @@ while :; do
     esac
 done
 test -z "$input_file" && usage
+if [ ! -f "$input_file" ]; then
+    echo "$input_file: file not found"
+    exit 1
+fi
 if [ -z "$output_file" ]; then
     dir=$(dirname "$input_file")
     name=$(basename "$input_file" ".vcf")
     output_file="$dir/$name.new.vcf"
 fi
 
-echo "in:  $input_file"
+echo -n > "$output_file"
-echo "out: $output_file"
+
-echo_verbose "verbose mode on"
+while IFS='' read -r line || [[ -n "$line" ]]; do
+    line=$(process_line "$line")
+    echo "$line" >> "$output_file"
+done < "$input_file"