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https://github.com/micl2e2/bwrap

A fast, lightweight, embedded system-friendly library for wrapping text.
https://github.com/micl2e2/bwrap
embedded-systems formatting newline no-std no-std-alloc rust text-wrapping unicode wordwrap
Last synced: about 2 months ago
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A fast, lightweight, embedded system-friendly library for wrapping text.
Host: GitHub
URL: https://github.com/micl2e2/bwrap
Owner: micl2e2
License: gpl-3.0
Created: 2023-06-09T08:13:42.000Z (over 1 year ago)
Default Branch: master
Last Pushed: 2024-02-17T14:43:27.000Z (7 months ago)
Last Synced: 2024-05-17T23:01:49.686Z (4 months ago)
Topics: embedded-systems, formatting, newline, no-std, no-std-alloc, rust, text-wrapping, unicode, wordwrap
Language: Rust
Homepage: https://crates.io/crates/bwrap
Size: 317 KB
Stars: 61
Watchers: 3
Forks: 2
Open Issues: 1
Metadata Files:
- Readme: README.md
- Changelog: ChangeLog
- License: LICENSE-DEPS/LICENSE-MIT_unicode-width
Awesome Lists containing this project

README

        # bwrap

[![crates][api_crate]][url_crate] [![unsafe][api_unsafe]][url_unsafe]

[![dep_status][api_depstatus]][url_depstatus] ![api_license][url_license]

[api_crate]: https://img.shields.io/crates/v/bwrap.svg

[url_crate]: https://crates.io/crates/bwrap

[api_license]: Crates.io

[url_license]: https://img.shields.io/crates/l/bwrap

[api_unsafe]: https://img.shields.io/badge/unsafe-forbidden-success.svg

[url_unsafe]: https://github.com/rust-secure-code/safety-dance/

[api_depstatus]: https://deps.rs/repo/github/micl2e2/bwrap/status.svg

[url_depstatus]: https://deps.rs/repo/github/micl2e2/bwrap

# Table of Contents

- [About](#about)

- [Benchmark](#benchmark)

- [Features](#features)

- [Examples](#examples)

  - [Multilingual](#multilingual)

    - [English, Ukrainian, Greek, etc.](#english-ukrainian-greek-etc)

    - [Chinese, Japanese, Thai, etc.](#chinese-japanese-thai-etc)

  - [Text Appending](#text-appending)

    - [Indentation](#indentation)

    - [Trailing notation](#trailing_notation)

- [Contributing](#contributing)

- [License](#license)

# About

Bwrap is a fast, lightweight, embedded system-friendly library for

wrapping text. While bwrap offers great flexibility in wrapping text,

neither resource consumption nor performance compromises: 

1.  No heap allocation happens by default.

2.  The time/space complexity is *O(n)* by default, or *O(n(p+a))* if

    there is appending/prepending. (*n*, *p*, *a* is the number of

    input/prepending/appending bytes respectively) 

For the sake of readability, we **b**etter **wrap** our text. 

# Benchmark

Below are the performance comparisons among several text-wrapping

libraries in different dimensions:

**Time:**



**Memory:**



Note:

1.  The benchmark is reproduciable, details about benchmark samples or

    methods are elaborated in

    [bench-wrap-libs](https://github.com/micl2e2/bench-wrap-libs). 

2.  The data above is obtained on an i5-3337u/8G machine and is for

    reference only. It is possible to have a slightly different result

    on a different machine or with different idle system resource. 

# Features

`use_std`: Use Rust standard library(libstd) for automatic memory management.

# Examples

Note that the following examples require `use_std` feature.

## Multilingual

bwrap suuport multiple languages, it categorizes languages into two

categories: **space-sensitive** and **space-insensitive**. The former

is for the languages that depend on ASCII SPACE to delimit words, such

as English, Ukrainian, Greek and so on. The latter is for the

languages that are space-insensitive, such as Chinese, Japanese, Thai

and so on. 

### English, Ukrainian, Greek, etc.

-   English

    Original:

    

    ```

    one two three four five six seven eight nine ten one two three four five six seven eight nine ten one two three four five six seven eight nine ten

    ```

    

    **Wrapped**:

    

    ```

    one two three four five six seven eight nine ten

    one two three four five six seven eight nine ten

    one two three four five six seven eight nine ten

    ```

    

    Source code:

    

    ```rust

    let line = "one two three four five six seven eight nine ten one two three four five six seven eight nine ten one two three four five six seven eight nine ten";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap!(line, 50));

    ```

-   Ukrainian

    Original:

    

    ```

    один два три чотири п'ять шість сім вісім дев'ять десять один два три чотири п'ять шість сім вісім дев'ять десять один два три чотири п'ять шість сім вісім дев'ять десять

    ```

    

    **Wrapped**:

    

    ```

    один два три чотири п'ять шість сім вісім дев'ять десять

    один два три чотири п'ять шість сім вісім дев'ять десять

    один два три чотири п'ять шість сім вісім дев'ять десять

    ```

    

    Source code:

    

    ```rust

    let line = "один два три чотири п'ять шість сім вісім дев'ять десять один два три чотири п'ять шість сім вісім дев'ять десять один два три чотири п'ять шість сім вісім дев'ять десять";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap!(line, 60));

    ```

-   Greek

    Original:

    

    ```

    ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα

    ```

    

    **Wrapped**:

    

    ```

    ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα

    ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα

    ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα

    ```

    

    Source code:

    

    ```rust

    let line = "ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα ένα δύο τρία τέσσερα πέντε έξι επτά οκτώ εννέα δέκα";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap!(line, 51));

    ```

### Chinese, Japanese, Thai, etc.

-   Chinese

    Original:

    

    ```

    一二三四五六七八九十一二三四五六七八九十一二三四五六七八九十

    ```

    

    **Wrapped**:

    

    ```

    一二三四五六七八九十

    一二三四五六七八九十

    一二三四五六七八九十

    ```

    

    Source code:

    

    ```rust

    let line = "一二三四五六七八九十一二三四五六七八九十一二三四五六七八九十";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap_maybrk!(line, 20));

    ```

-   Japanese

    Original:

    

    ```

    ありがとうございますありがとうございますありがとうございます

    ```

    

    **Wrapped**:

    

    ```

    ありがとうございます

    ありがとうございます

    ありがとうございます

    ```

    

    Source code:

    

    ```rust

    let line = "ありがとうございますありがとうございますありがとうございます";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap_maybrk!(line, 20));

    ```

-   Thai

    Original:

    

    ```

    หนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบหนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบหนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบ

    ```

    

    **Wrapped**:

    

    ```

    หนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบ

    หนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบ

    หนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบ

    ```

    

    Source code:

    

    ```rust

    let line = "หนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบหนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบหนึ่งสองสามสี่ห้าหกเจ็ดแปดเก้าสิบ";

    println!("ORIGINAL:\n\n{}\n", line);

    println!("WRAPPED:\n\n{}", bwrap::wrap_maybrk!(line, 25));

    ```

## Text Appending

bwrap can append or prepend whatever string to newly added newline

character. With this feature, one can effectively achieve indentation,

line trailing notation or similar. 

### Indentation

Original:

```

Here is our schedule:

- Do A, and do B, and do C, and do D, and do E, and do F

- Do G, and do H, and do I, and do J, and do K, and do L

```

**Wrapped**:

```

Here is our schedule:

- Do A, and do B, and do C, and do

  D, and do E, and do F

- Do G, and do H, and do I, and do

  J, and do K, and do L

```

Source code:

```rust

let line = "Here is our schedule:\n- Do A, and do B, and do C, and do D, and do E, and do F\n- Do G, and do H, and do I, and do J, and do K, and do L";

println!("ORIGINAL:\n\n{}\n", line);

println!("WRAPPED:\n\n{}", bwrap::wrap_nobrk!(line, 35, "  "));

```

### Trailing notation

Original:

```

VGhpcyBpcyBhIHNlY3JldCBtZXNzYWdlLCBwbGVhc2UgZGVsZXRlIGFmdGVyIHJlYWQK

```

**Wrapped**:

```

VGhpcyBpcy |

BhIHNlY3Jl |

dCBtZXNzYW |

dlLCBwbGVh |

c2UgZGVsZX |

RlIGFmdGVy |

IHJlYWQK  

```

Source code:

```rust

let line = "VGhpcyBpcyBhIHNlY3JldCBtZXNzYWdlLCBwbGVhc2UgZGVsZXRlIGFmdGVyIHJlYWQK";

println!("ORIGINAL:\n\n{}\n", line);

println!("WRAPPED:\n\n{}", bwrap::wrap_maybrk!(line, 10, " |"));

```

# Contributing

bwrap is still far from perfect, any form of contribution is welcomed!

This is not an exhaustive list:

- Ask question (label [![](https://img.shields.io/static/v1?label=&message=question&color=purple)](https://github.com/micl2e2/bwrap/issues/new))

- Bug Report (label [![](https://img.shields.io/static/v1?label=&message=bug&color=red)](https://github.com/micl2e2/bwrap/issues/new))

- Feature Request (label [![](https://img.shields.io/static/v1?label=&message=enhancement&color=lightblue)](https://github.com/micl2e2/bwrap/issues/new))

- Documentation Improvement (label [![](https://img.shields.io/static/v1?label=&message=enhancement&color=lightblue)](https://github.com/micl2e2/bwrap/issues/new))

- Code Contribution

# License

bwrap can be licensed under either [MIT

License](https://github.com/micl2e2/bwrap/blob/master/LICENSE-MIT) **or**

[GNU General Public License Version

3.0](https://github.com/micl2e2/bwrap/blob/master/LICENSE-GPL). The

choice is **entirely** up to you.