From 8fa61211042cfe88f6f68041b7f7f1afbbfee3f7 2020-06-29 04:16:43
From: Branko Majic <branko@majic.rs>
Date: 2020-06-29 04:16:43
Subject: [PATCH] Checked-in a script for resizing images up to a maximum height/width.

---

diff --git a/multimedia/imgresize.sh b/multimedia/imgresize.sh
new file mode 100755
index 0000000000000000000000000000000000000000..3ea48af669a3d1e0d965477a5503c3ff7ea05132
--- /dev/null
+++ b/multimedia/imgresize.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+#
+# imgresize.sh
+#
+# Copyright (C) 2009, Branko Majic <branko@majic.rs>
+#
+# 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/>.
+#
+
+program="imgresize.sh"
+version="0.2"
+
+function usage() {
+    cat <<EOF
+$program $version, a non-interactive utility for resizing the images for upload
+on websites with limited space.
+
+Usage: $program [OPTIONS] max inputDir outputDir
+
+$program is a non-interactive utility for resizing the JPEG images for upload on
+websites with limited space. It is basically a wrapper around convert utility
+from ImageMagick package. All JPEG images within the input directory get
+resized.
+
+Images with heigth or width bigger than the maximum value specified get resized
+along the bigger side so that it fits in the specified value. Images that do not
+exceed the specified maximum value get their quality reduced.
+
+$program accepts the following options:
+
+    -v        show script version and licensing information
+    -h        show usage help
+
+
+Please report bugs and send feature requests to <branko@majic.rs>.
+EOF
+}
+
+function version() {
+        cat <<EOF
+$program, version $version
+
++-----------------------------------------------------------------------+
+| Copyright (C) 2009, Branko Majic <branko@majic.rs>                    |
+|                                                                       |
+| 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/>. |
++-----------------------------------------------------------------------+
+
+EOF
+}
+
+# If no arguments were given, just show usage help.
+if [[ -z $1 ]]; then
+    usage
+    exit 0
+fi
+
+# Parse the arguments
+while getopts "vh" opt; do
+    case "$opt" in
+        v) version
+           exit 0;;
+        h) usage
+           exit 0;;
+        *) usage
+           exit 1;;
+    esac
+done
+i=$OPTIND
+shift $(($i-1))
+
+max="$1"
+inputDir="$2"
+outputDir="$3"
+
+for file in $(find "$inputDir" -iregex '.*jpg'); do
+    fileName="$(basename "$file")"
+    geometry="$(identify "$file" | sed -e "s#$file ##" | awk '{print $2}')"
+    width="$(echo "$geometry" | sed 's/x.*//')"
+    height="$(echo "$geometry" | sed 's/.*x//')"
+    if (( $width > $height && $width > $max )); then
+        convert -resize $max -quality 85 "$file" "$outputDir/$fileName"
+    elif (( $height > $width && $height > $max)); then
+        convert -resize x$max -quality 85 "$file" "$outputDir/$fileName"
+    else
+        convert "$file" -quality 85 "$outputDir/$fileName"
+    fi
+done
+