ZImageOptimizer Versions Save

• Added support for extensions.
• Added hooks for extensions. The script refactored for support redefinition of some variables using extensions.
• Added lock file to prevent cycling optimization and avoid conflicts during optimization for longer than period between optimizations.
• Min bash version raised to 4.*.
• Added autoinstall new bash version on MacOS.
• Specific supported versions of FreeBSD replaced with minimum version. Now for new versions will be supported automatic installation of dependencies without refactoring the script.
• Optimization via djpeg/cjpeg is currently temporarily disabled to prevent an increase in size of output files in lossless mode. Later, djpeg/cjpeg options for lossless compression and small output file size will be selected.
• Refactoring.

Fixed quality in cjpeg/djpeg compression. This increases the size of the output JPEGs. In the future I will try to adjust this for better compression without loss of quality.

Added check for empty temporary file after decompress image with djpeg.

Optimization with djpeg/cjpeg is skipped if decompressed file is empty. This can occur if input file has CMYK colorspace or when other decompression errors occur.

Fixes:

• added restoration of original files if their size is less or equal than optimized files size;
• added additional check for isset djpeg/cjpeg temporary files before removing it to avoid errors on RHEL7.

Fixed PNG file permissions if script does not work from files owner.

Added:

• added new parameter for excluding folders/files from search before optimizing (script removes from the search files in the full path of which includes any value from the list);
• added progrees indicator;
• added displaing total time after optimizing.

Other:

• bug fixes;
• small code refactoring.

Added support for working script on MacOS 10.10+ with automatic install dependences.

New:

• added new parameter for excluding optimizing process from output;
• added number of input and optimized files after optimizing in output.

Others:

• disabled colored text, when script executing in cron;
• small code refactoring;
• some bug fixes.

New:

• added option for search of the images changed in a certain period of time;
• added options for use of a special time marker for search only new files (based on last modify time);
• added option for set custom directory path for temporary files;
• added option for display script version.

Changes:

• -n(--no-ask) changed to -q(--quiet);
• now path to working directory may be with and without slash on the end of path;
• now path to temporary files directory may be with and without slash on the end of path;
• now paths to binary files may be with and without slash on the end of path;
• added check for no input files;
• bug fixes and code refactoring.

Features:

• added support for working script on FreeBSD
• added support for automatic install dependences on FreeBSD 10.3 / 10.4 / 11.1
• added saving space in percentage view in the end of script working

Fixes:

• added support for non-latin characters and special characters (including spaces) in path to input directory (special characters and spaces must be escaping using back slash in parameter -p/-path)
• for now input directory may be set with or without slash in the end of path
• some packages removed from list of dependences

And some minor bug fixes and code refactoring.