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MIT License | ||
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Copyright (c) 2023 Andrew Sen | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. |
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# Algo | ||
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A Typst library for writing algorithms. On Typst v0.6.0+ you can import the `algo` package: | ||
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```typst | ||
#import "@preview/algo:0.3.1": algo, i, d, comment, code | ||
``` | ||
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Otherwise, add the `algo.typ` file to your project and import it as normal: | ||
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```typst | ||
#import "algo.typ": algo, i, d, comment, code | ||
``` | ||
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Use the `algo` function for writing pseudocode and the `code` function for writing code blocks with line numbers. Check out the [examples](#examples) below for a quick overview. See the [usage](#usage) section to read about all the options each function has. | ||
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## Examples | ||
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Here's a basic use of `algo`: | ||
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```typst | ||
#algo( | ||
title: "Fib", | ||
parameters: ("n",) | ||
)[ | ||
if $n < 0$:#i\ // use #i to indent the following lines | ||
return null#d\ // use #d to dedent the following lines | ||
if $n = 0$ or $n = 1$:#i #comment[you can also]\ | ||
return $n$#d #comment[add comments!]\ | ||
return #smallcaps("Fib")$(n-1) +$ #smallcaps("Fib")$(n-2)$ | ||
] | ||
``` | ||
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<img src="https://user-images.githubusercontent.com/40146328/235323240-e59ed7e2-ebb6-4b80-8742-eb171dd3721e.png" width="400px" /> | ||
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<br /> | ||
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Here's a use of `algo` without a title, parameters, line numbers, or syntax highlighting: | ||
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```typst | ||
#algo( | ||
line-numbers: false, | ||
strong-keywords: false | ||
)[ | ||
if $n < 0$:#i\ | ||
return null#d\ | ||
if $n = 0$ or $n = 1$:#i\ | ||
return $n$#d\ | ||
\ | ||
let $x <- 0$\ | ||
let $y <- 1$\ | ||
for $i <- 2$ to $n-1$:#i #comment[so dynamic!]\ | ||
let $z <- x+y$\ | ||
$x <- y$\ | ||
$y <- z$#d\ | ||
\ | ||
return $x+y$ | ||
] | ||
``` | ||
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<img src="https://user-images.githubusercontent.com/40146328/235323261-d6e7a42c-ffb7-4c3a-bd2a-4c8fc2df5f36.png" width="300px" /> | ||
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<br /> | ||
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And here's `algo` with more styling options: | ||
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```typst | ||
#algo( | ||
title: [ // note that title and parameters | ||
#set text(size: 15pt) // can be content | ||
#emph(smallcaps("Fib")) | ||
], | ||
parameters: ([#math.italic("n")],), | ||
comment-prefix: [#sym.triangle.stroked.r ], | ||
comment-styles: (fill: rgb(100%, 0%, 0%)), | ||
indent-size: 15pt, | ||
indent-guides: 1pt + gray, | ||
row-gutter: 5pt, | ||
column-gutter: 5pt, | ||
inset: 5pt, | ||
stroke: 2pt + black, | ||
fill: none, | ||
)[ | ||
if $n < 0$:#i\ | ||
return null#d\ | ||
if $n = 0$ or $n = 1$:#i\ | ||
return $n$#d\ | ||
\ | ||
let $x <- 0$\ | ||
let $y <- 1$\ | ||
for $i <- 2$ to $n-1$:#i #comment[so dynamic!]\ | ||
let $z <- x+y$\ | ||
$x <- y$\ | ||
$y <- z$#d\ | ||
\ | ||
return $x+y$ | ||
] | ||
``` | ||
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<img src="https://github.com/platformer/typst-algorithms/assets/40146328/89f80b5d-bdb2-420a-935d-24f43ca597d8" width="300px" /> | ||
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| ||
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Here's a basic use of `code`: | ||
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````typst | ||
#code()[ | ||
```py | ||
def fib(n): | ||
if n < 0: | ||
return None | ||
if n == 0 or n == 1: # this comment is | ||
return n # normal raw text | ||
return fib(n-1) + fib(n-2) | ||
``` | ||
] | ||
```` | ||
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<img src="https://user-images.githubusercontent.com/40146328/235324088-a3596e0b-af90-4da3-b326-2de11158baac.png" width="400px"/> | ||
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<br /> | ||
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And here's `code` with some styling options: | ||
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````typst | ||
#code( | ||
indent-guides: 1pt + gray, | ||
row-gutter: 5pt, | ||
column-gutter: 5pt, | ||
inset: 5pt, | ||
stroke: 2pt + black, | ||
fill: none, | ||
)[ | ||
```py | ||
def fib(n): | ||
if n < 0: | ||
return None | ||
if n == 0 or n == 1: # this comment is | ||
return n # normal raw text | ||
return fib(n-1) + fib(n-2) | ||
``` | ||
] | ||
```` | ||
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<img src="https://github.com/platformer/typst-algorithms/assets/40146328/c091ac43-6861-40bc-8046-03ea285712c3" width="400px"/> | ||
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## Usage | ||
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### `algo` | ||
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Makes a pseudocode element. | ||
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```typst | ||
algo( | ||
body, | ||
header: none, | ||
title: none, | ||
parameters: (), | ||
line-numbers: true, | ||
strong-keywords: true, | ||
keywords: _algo-default-keywords, // see below | ||
comment-prefix: "// ", | ||
indent-size: 20pt, | ||
indent-guides: none, | ||
indent-guides-offset: 0pt, | ||
row-gutter: 10pt, | ||
column-gutter: 10pt, | ||
inset: 10pt, | ||
fill: rgb(98%, 98%, 98%), | ||
stroke: 1pt + rgb(50%, 50%, 50%), | ||
radius: 0pt, | ||
breakable: false, | ||
block-align: center, | ||
main-text-styles: (:), | ||
comment-styles: (fill: rgb(45%, 45%, 45%)), | ||
line-number-styles: (:) | ||
) | ||
``` | ||
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**Parameters:** | ||
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* `body`: `content` — Main algorithm content. | ||
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* `header`: `content` — Algorithm header. If specified, `title` and `parameters` are ignored. | ||
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* `title`: `string` or `content` — Algorithm title. Ignored if `header` is specified. | ||
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* `Parameters`: `array` — List of algorithm parameters. Elements can be `string` or `content` values. `string` values will automatically be displayed in math mode. Ignored if `header` is specified. | ||
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* `line-numbers`: `boolean` — Whether to display line numbers. | ||
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* `strong-keywords`: `boolean` — Whether to strongly emphasize keywords. | ||
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* `keywords`: `array` — List of terms to receive strong emphasis. Elements must be `string` values. Ignored if `strong-keywords` is `false`. | ||
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The default list of keywords is stored in `_algo-default-keywords`. This list contains the following terms: | ||
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``` | ||
("if", "else", "then", "while", "for", | ||
"repeat", "do", "until", ":", "end", | ||
"and", "or", "not", "in", "to", | ||
"down", "let", "return", "goto") | ||
``` | ||
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Note that for each of the above terms, `algo-default-keywords` also contains the uppercase form of the term (e.g. "for" and "For"). | ||
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* `comment-prefix`: `content` — What to prepend comments with. | ||
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* `indent-size`: `length` — Size of line indentations. | ||
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* `indent-guides`: `stroke` — Stroke for indent guides. | ||
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* `indent-guides-offset`: `length` — Horizontal offset of indent guides. | ||
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* `row-gutter`: `length` — Space between lines. | ||
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* `column-gutter`: `length` — Space between line numbers, text, and comments. | ||
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* `inset`: `length` — Size of inner padding. | ||
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* `fill`: `color` — Fill color. | ||
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* `stroke`: `stroke` — Stroke for the element's border. | ||
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* `radius`: `length` — Corner radius. | ||
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* `breakable`: `boolean` — Whether the element can break across pages. WARNING: indent guides may look off when broken across pages. | ||
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* `block-align`: `none` or `alignment` or `2d alignment` — Alignment of the `algo` on the page. Using `none` will cause the internal `block` element to be returned as-is. | ||
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* `main-text-styles`: `dictionary` — Styling options for the main algorithm text. Supports all parameters in Typst's native `text` function. | ||
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* `comment-styles`: `dictionary` — Styling options for comment text. Supports all parameters in Typst's native `text` function. | ||
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* `line-number-styles`: `dictionary` — Styling options for line numbers. Supports all parameters in Typst's native `text` function. | ||
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### `i` and `d` | ||
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For use in an `algo` body. `#i` indents all following lines and `#d` dedents all following lines. | ||
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### `comment` | ||
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For use in an `algo` body. Adds a comment to the line in which it's placed. | ||
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```typst | ||
comment( | ||
body, | ||
inline: false | ||
) | ||
``` | ||
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**Parameters:** | ||
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* `body`: `content` — Comment content. | ||
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* `inline`: `boolean` — If true, the comment is displayed in place rather than on the right side. | ||
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NOTE: inline comments will respect both `main-text-styles` and `comment-styles`, preferring `comment-styles` when the two conflict. | ||
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NOTE: to make inline comments insensitive to `strong-keywords`, strong emphasis is disabled within them. This can be circumvented via the `text` function: | ||
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```typst | ||
#comment(inline: true)[#text(weight: 700)[...]] | ||
``` | ||
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### `no-emph` | ||
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For use in an `algo` body. Prevents the passed content from being strongly emphasized. If a word appears in your algorithm both as a keyword and as normal text, you may escape the non-keyword usages via this function. | ||
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```typst | ||
no-emph( | ||
body | ||
) | ||
``` | ||
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**Parameters:** | ||
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* `body`: `content` — Content to display without emphasis. | ||
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### `code` | ||
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Makes a code block element. | ||
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```typst | ||
code( | ||
body, | ||
line-numbers: true, | ||
indent-guides: none, | ||
indent-guides-offset: 0pt, | ||
tab-size: auto, | ||
row-gutter: 10pt, | ||
column-gutter: 10pt, | ||
inset: 10pt, | ||
fill: rgb(98%, 98%, 98%), | ||
stroke: 1pt + rgb(50%, 50%, 50%), | ||
radius: 0pt, | ||
breakable: false, | ||
block-align: center, | ||
main-text-styles: (:), | ||
line-number-styles: (:) | ||
) | ||
``` | ||
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**Parameters:** | ||
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* `body`: `content` — Main content. Expects `raw` text. | ||
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* `line-numbers`: `boolean` — Whether to display line numbers. | ||
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* `indent-guides`: `stroke` — Stroke for indent guides. | ||
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* `indent-guides-offset`: `length` — Horizontal offset of indent guides. | ||
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* `tab-size`: `integer` — Amount of spaces that should be considered an indent. If unspecified, the tab size is determined automatically from the first instance of starting whitespace. | ||
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* `row-gutter`: `length` — Space between lines. | ||
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* `column-gutter`: `length` — Space between line numbers and text. | ||
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* `inset`: `length` — Size of inner padding. | ||
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* `fill`: `color` — Fill color. | ||
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* `stroke`: `stroke` — Stroke for the element's border. | ||
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* `radius`: `length` — Corner radius. | ||
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* `breakable`: `boolean` — Whether the element can break across pages. WARNING: indent guides may look off when broken across pages. | ||
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* `block-align`: `none` or `alignment` or `2d alignment` — Alignment of the `code` on the page. Using `none` will cause the internal `block` element to be returned as-is. | ||
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* `main-text-styles`: `dictionary` — Styling options for the main raw text. Supports all parameters in Typst's native `text` function. | ||
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* `line-number-styles`: `dictionary` — Styling options for line numbers. Supports all parameters in Typst's native `text` function. | ||
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## Contributing | ||
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PRs are welcome! And if you encounter any bugs or have any requests/ideas, feel free to open an issue. |
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