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https://github.com/jakubriegel/abacus
Table data editor with the support of formulas
https://github.com/jakubriegel/abacus
abacus cells formulas java-swing language-parser recursion spreadsheet
Last synced: about 2 months ago
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Table data editor with the support of formulas
- Host: GitHub
- URL: https://github.com/jakubriegel/abacus
- Owner: jakubriegel
- License: mit
- Created: 2021-03-10T16:09:14.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2021-04-08T21:31:04.000Z (almost 4 years ago)
- Last Synced: 2024-10-17T12:27:30.848Z (3 months ago)
- Topics: abacus, cells, formulas, java-swing, language-parser, recursion, spreadsheet
- Language: Java
- Homepage:
- Size: 456 KB
- Stars: 3
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# abacus
## About
Table data editor with the support of formulas.
## Highlights
- graphical UI
- cells edition
- formulas with custom language
- endless scroll
- basic cell and text formatting
## Formula language
### Supported expressions
The language supports following expressions:
* number value, ie. `1`, `-12.34`
* text value, ie. `abc`
* logic value: `true` or `false`
* formulas, ie. `=add(1, 2)`
### Formulas syntax
Formulas start with `=` followed by formula name and arguments. Simple formula call looks as follows:
```
=add(1, 2) # 3
```
To use text value as argument wrap in with `''`:
```
=length('abc ') # 4
```
Other cell can be referenced with its address:
```
=add(1, B5) # 1 + value of B5
```
Formulas can take other formulas as arguments:
```
=abs(add(-10, length('abc'))) # 7
```
### Available formulas
#### Math
**Basic**:
* abs(number) -> number
* add(vararg number) -> number
* ceil(number) -> number
* div(number, number) -> number
* divide(vararg number) -> number
* floor(number) -> number
* mod(number, number) -> number
* multiply(vararg number) -> number
* subtract(vararg number) -> number
**Stats**:
* max(vararg number) -> number
* mean(vararg number) -> number
* min(vararg number) -> number
* std(vararg number) -> number
#### Text
* length(text) -> number
* lower(text) -> text
* sub(text, number, number) -> text
* upper(text) -> text
#### Logic
* compare(vararg any) -> logic
* if(logic, any, any) -> any
## Running it
> Note that the app was tested only on Windows.
Requirements:
- Java 15
- physical display
Steps:
1. Checkout the code
2. Type `./gradlew run`
## Possible enhancements
**Features:**
- cell range reference
- working side menu (ie. saving, undo/redo, search)
- syntax highlighting
- event based user behaviour metrics
**Technical:**
- split app into three modules
- integration tests