Enhanced AppImage downloader with --extract option

If the full size AppImage is extracted locally, the extracted executable
will run as fast as a packaged release - but will take more disk space.

diff --git a/README.md b/README.md
index 0512814..884c3a2 100644 (file)
--- a/README.md
+++ b/README.md
@@ -126,6 +126,13 @@ This script file will download the latest Continuous Build AppImages for you:
 wget https://raw.githubusercontent.com/BestImageViewer/geeqie/master/scripts/geeqie-download-appimage.sh
 chmod +x geeqie-download-appimage.sh
 ```
+You should read the contents of the file before running it. The option ```--help``` gives some information about its functions.
+
+The script downloads both the full size and the minimal versions of the AppIamge, and sets symbolic links to these files.
+
+The full version takes a noticeable time to load, and runs slightly slower than a normal packaged release.
+The above script has the option ```--extract``` which extracts the contents of the full size AppImage to a local sub-directory.
+If the executable is run from there the loading and run time is the same as for a packaged release.
 
 ### Installation scripts
 

diff --git a/scripts/geeqie-download-appimage.sh b/scripts/geeqie-download-appimage.sh
index c7bab7e..95e54e8 100755 (executable)
--- a/scripts/geeqie-download-appimage.sh
+++ b/scripts/geeqie-download-appimage.sh
@@ -21,19 +21,113 @@
 
 ## @file
 ## @brief Download full and minimal AppImages from the Continuous build release on GitHub.
+## Optionally extract the full size AppImage.
 ##
+## $1: -e | --extract Extract full size AppImage
 ## The user should modify the symbolic links as appropriate.
 ##
 ## Downloads will not be made unless the server version is newer than the local file.
 ##
 
+show_help()
+{
+printf "Download the latest Geeqie AppImages from the
+Continuous Build release on GitHub.
+
+The Continuous Build release is updated each
+time the source code is updated.
+
+You should read the contents of this file before
+running it and modify it to your requirements.
+
+The default action is to download both the
+minimal and full size AppImages to \$HOME/bin.
+Symbolic links will be set so that:
+\"geeqie\" points to the minimal version
+and
+\"Geeqie\" points to the full version.
+
+No downloads will be made unless the file on the
+server at GitHub is newer than the local file.
+
+The full size AppImage is about 120MB and the
+minimal AppImage is about 10MB. Therefore the full
+size version will load much slower and will have
+a slightly slower run speed.
+
+However the minimal version has limited capabilities
+compared to the full size version.
+
+The extract option (-e or --extract) will extract
+The contents of the full size image into a sub-directory
+of \$HOME/bin, and then set the symbolic link to the
+extracted executable. This will take up disk space, but the
+extracted executable will run as fast as a packaged release.
+
+When a new file is downloaded the extracted files will
+be replaced by the newly downloaded files\n\n"
+}
+
+extract=0
+
+while :; do
+    case $1 in
+        -h|-\?|--help)
+            show_help
+            exit
+            ;;
+        -e|--extract)    # AppImage extraction is required
+            extract=1
+            ;;
+        --)              # End of all options.
+            shift
+            break
+            ;;
+        -?*)
+            printf 'ERROR: Unknown option %s\n' "$1" >&2
+            exit
+            ;;
+        *)
+            break
+    esac
+
+    shift
+done
+
 cd "$HOME/bin/" || exit
 architecture=$(arch)
 
-wget --quiet --show-progress --backups=3 --timestamping "https://github.com/BestImageViewer/geeqie/releases/download/continuous/Geeqie-latest-$architecture.AppImage";
-chmod +x "Geeqie-latest-$architecture.AppImage"
-ln --symbolic --force "Geeqie-latest-$architecture.AppImage" Geeqie
+# Download full size AppImage
+log_file=$(mktemp "${TMPDIR:-/tmp}/geeqie.XXXXXXXXXX")
+
+wget --no-verbose --show-progress --backups=3 --output-file="$log_file" --timestamping "https://github.com/BestImageViewer/geeqie/releases/download/continuous/Geeqie-latest-$architecture.AppImage";
+
+download_size=$(stat --printf "%s" "$log_file")
+rm "$log_file"
+
+# If a new file was downloaded, check if extraction is required
+if [ "$download_size" -gt 0 ]
+then
+       chmod +x "Geeqie-latest-$architecture.AppImage"
+
+       if [ "$extract" -eq 1 ]
+       then
+               rm -rf "Geeqie-latest-$architecture-AppImage"
+               mkdir "Geeqie-latest-$architecture-AppImage"
+               cd "Geeqie-latest-$architecture-AppImage" || exit
+
+               printf "Extracting AppImage\n"
+               ../"Geeqie-latest-$architecture.AppImage" --appimage-extract | cut -c 1-50 | tr '\n' '\r'
+
+               printf "\n"
+               cd ..
+               ln --symbolic --force "./Geeqie-latest-$architecture-AppImage/squashfs-root/AppRun" Geeqie
+       else
+               ln --symbolic --force "Geeqie-latest-$architecture.AppImage" Geeqie
+       fi
+fi
 
+# Download minimal AppImage
 wget --quiet --show-progress --backups=3 --timestamping "https://github.com/BestImageViewer/geeqie/releases/download/continuous/Geeqie-minimal-latest-$architecture.AppImage";
 chmod +x "Geeqie-minimal-latest-$architecture.AppImage"
 ln --symbolic --force "Geeqie-minimal-latest-$architecture.AppImage" geeqie