PDF Tool Helper is a aggregation of PDF utils in a GUI (made with JavaFX).
I started this project because i was in need of something simple and powerful.
Since i did not find any Free software, with a GUI, able to fulfill my needs, i created one.
PDF Tool Helper is not more than a GUI (made with JavaFX) wrapper around pdfbox (pdfbox.apache.org).
As said, this project makes use of pdfbox.
Currently, Convert, Crop, Insert, Merge and Change Quality are supported operations.
A few TextFields around the program expects a valid RangeEx as input, but what is it?
RangeEx, short of Range Expression, is a simple expression system, by me designed, that represents a finite amount of numbers.
An underscore represents an interval of numbers, going from the number on the left to the number on the right of the underscore.
Generalizing, an input "X_Y", with X and Y being positive integers and X < Y, will result in all the numbers from X to Y, including Y.
Should always be used between two numbers.
Examples:
"1_4" will result in [1, 2, 3, 4].
"10_15" will result in [10, 11, 12, 13, 14, 15].
"6" or "3" will result in an undefined behavior.
A plus represents an addition of the number that follows it.
Generalizing, an input "+X", with X being a positive integer, will result in an interval with only the value X.
Every plus signal should be followed by a valid number.
Examples:
"+1" will result in [1].
"+7" will result in [7].
"+" or "++0" will result in an undefined behavior.
A minus represents a subtraction of the number that follows it from a interval.
Generalizing, an input "-X", with X being a positive integer, will result in the current input interval but without X.
Every minus signal should be followed by a valid number.
Example:
"1_4-3" will result in [1, 2, 4].
"5_7-6" will result in [5, 7].
One or more spaces (" ") are a valid input to separate things.
This way, "1_3 6_8" will result in [1, 2, 3, 6, 7, 8].
The same result can also be achieved with "1_3+6_8".
Keeping in mind the order of the operations is important:
Every range (underscore) is evaluated first;
Then every addition (plus) is added to the previous interval;
Then every subtraction (minus) is removed from the interval.
Because of this order, are valid unintuitive RangeEx:
"+13 +10", the same as "+13+10", resulting in [10, 13].
"-2 1_3", the same as "-2+1_3", resulting in [1, 3].
"-5 +5 +5 +3", the same as "-5+5+5+3", resulting in [3], since subtraction is the last thing that happens.
"3_7 -4 +20 25_28 +50", the same as "3_7-4+20+25_28+50", resulting in [3, 5, 6, 7, 20, 25, 26, 27, 28, 50].
Because of this, RangeEx allows the user to specifically select pages of a file, even not continuous ones.
'*' can be used as a wild card, matching every possibility. Keep in mind that other operations will be ignored.