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150 lines
4.7 KiB
Plaintext
150 lines
4.7 KiB
Plaintext
---
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title: String Functions
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---
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<% function 'quote($string)', returns: 'string' do %>
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Returns `$string` as a quoted string.
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<% example(autogen_css: false) do %>
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@debug quote(Helvetica); // "Helvetica"
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@debug quote("Helvetica"); // "Helvetica"
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===
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@debug quote(Helvetica) // "Helvetica"
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@debug quote("Helvetica") // "Helvetica"
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<% end %>
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<% end %>
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<% function 'str-index($string, $substring)', returns: 'number' do %>
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Returns the first [index][] of `$substring` in `$string`, or `null` if
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`$string` doesn't contain `$substring`.
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[index]: ../values/strings#string-indexes
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<% example(autogen_css: false) do %>
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@debug str-index("Helvetica Neue", "Helvetica"); // 1
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@debug str-index("Helvetica Neue", "Neue"); // 11
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===
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@debug str-index("Helvetica Neue", "Helvetica") // 1
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@debug str-index("Helvetica Neue", "Neue") // 11
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<% end %>
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<% end %>
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<% function 'str-insert($string, $insert, $index)', returns: 'string' do %>
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Returns a copy of `$string` with `$insert` inserted at [`$index`][].
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[`$index`]: ../values/strings#string-indexes
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<% example(autogen_css: false) do %>
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@debug str-insert("Roboto Bold", " Mono", 7); // "Roboto Mono Bold"
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@debug str-insert("Roboto Bold", " Mono", -6); // "Roboto Mono Bold"
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===
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@debug str-insert("Roboto Bold", " Mono", 7) // "Roboto Mono Bold"
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@debug str-insert("Roboto Bold", " Mono", -6) // "Roboto Mono Bold"
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<% end %>
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If of `$index` is higher than the length of `$string`, `$insert` is added to
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the end. If `$index` is smaller than the negative length of the string,
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`$insert` is added to the beginning.
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<% example(autogen_css: false) do %>
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@debug str-insert("Roboto", " Bold", 100); // "Roboto Bold"
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@debug str-insert("Bold", "Roboto ", -100); // "Roboto Bold"
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===
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@debug str-insert("Roboto", " Bold", 100) // "Roboto Bold"
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@debug str-insert("Bold", "Roboto ", -100) // "Roboto Bold"
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<% end %>
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<% end %>
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<% function 'str-length($string)', returns: 'number' do %>
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Returns the number of characters in `$string`.
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<% example(autogen_css: false) do %>
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@debug str-length("Helvetica Neue"); // 14
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@debug str-length(bold); // 4
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@debug str-index(""); // 0
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===
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@debug str-length("Helvetica Neue") // 14
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@debug str-length(bold) // 4
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@debug str-index("") // 0
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<% end %>
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<% end %>
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<% function 'str-slice($string, $start-at, $end-at: -1)', returns: 'string' do %>
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Returns the slice of `$string` starting at [index][] `$start-at` and ending at
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index `$end-at` (both inclusive).
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[index]: ../values/strings#string-indexes
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<% example(autogen_css: false) do %>
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@debug str-slice("Helvetica Neue", 11); // "Neue"
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@debug str-slice("Helvetica Neue", 1, 3); // "Hel"
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@debug str-slice("Helvetica Neue", 1, -6); // "Helvetica"
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===
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@debug str-slice("Helvetica Neue", 11) // "Neue"
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@debug str-slice("Helvetica Neue", 1, 3) // "Hel"
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@debug str-slice("Helvetica Neue", 1, -6) // "Helvetica"
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<% end %>
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<% end %>
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<% function 'to-upper-case($string)', returns: 'string' do %>
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Returns a copy of `$string` with the [ASCII][] letters converted to upper case.
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[ASCII]: https://en.wikipedia.org/wiki/ASCII
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<% example(autogen_css: false) do %>
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@debug to-upper-case("Bold"); // "BOLD"
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@debug to-upper-case(sans-serif); // SANS-SERIF
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===
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@debug to-upper-case("Bold") // "BOLD"
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@debug to-upper-case(sans-serif) // SANS-SERIF
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<% end %>
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<% end %>
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<% function 'to-lower-case($string)', returns: 'string' do %>
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Returns a copy of `$string` with the [ASCII][] letters converted to lower case.
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[ASCII]: https://en.wikipedia.org/wiki/ASCII
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<% example(autogen_css: false) do %>
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@debug to-upper-case("Bold"); // "bold"
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@debug to-upper-case(SANS-SERIF); // sans-serif
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===
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@debug to-upper-case("Bold") // "bold"
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@debug to-upper-case(SANS-SERIF) // sans-serif
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<% end %>
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<% end %>
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<% function 'unique-id()', returns: 'string' do %>
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Returns a randomly-generated unquoted string that's guaranteed to be a valid
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CSS identifier and to be unique within the current Sass compilation.
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<% example(autogen_css: false) do %>
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@debug unique-id(); // uabtrnzug
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@debug unique-id(); // u6w1b1def
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===
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@debug unique-id(); // uabtrnzug
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@debug unique-id(); // u6w1b1def
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<% end %>
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<% end %>
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<% function 'unquote()', returns: 'string' do %>
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Returns `$string` as an unquoted string. This can produce strings that aren't
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valid CSS, so use with caution.
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<% example(autogen_css: false) do %>
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@debug unquote("Helvetica"); // Helvetica
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@debug unquote(".widget:hover"); // .widget:hover
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===
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@debug unquote("Helvetica") // Helvetica
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@debug unquote(".widget:hover") // .widget:hover
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<% end %>
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<% end %>
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