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161 lines
5.2 KiB
Markdown
161 lines
5.2 KiB
Markdown
---
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title: Code 代码高亮
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description:
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type: 0
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group: ⚙ 组件
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menuName: Code
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icon:
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order: 38
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---
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使用代码高亮的方式来显示一段代码。
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## 基本用法
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```schema: scope="body"
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{
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"type": "code",
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"language": "html",
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"value": "<div>html</div>"
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}
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```
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## 语言设置
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默认语言是 html，可以通过 language 指定以下语言：
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`bat`、 `c`、 `coffeescript`、 `cpp`、 `csharp`、 `css`、 `dockerfile`、 `fsharp`、 `go`、 `handlebars`、 `html`、 `ini`、 `java`、 `javascript`、 `json`、 `less`、 `lua`、 `markdown`、 `msdax`、 `objective-c`、 `php`、 `plaintext`、 `postiats`、 `powershell`、 `pug`、 `python`、 `r`、 `razor`、 `ruby`、 `sb`、 `scss`、`shell`、 `sol`、 `sql`、 `swift`、 `typescript`、 `vb`、 `xml`、 `yaml`
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```schema
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{
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"body": {
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"type": "code",
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"language": "javascript",
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"value": "(function () {\n let amis = amisRequire('amis/embed');\n let amisJSON = {\n type: 'page',\n title: '表单页面',\n body: {\n type: 'form',\n mode: 'horizontal',\n api: '/saveForm',\n body: [\n {\n label: 'Name',\n type: 'input-text',\n name: 'name'\n },\n {\n label: 'Email',\n type: 'input-email',\n name: 'email'\n }\n ]\n }\n };\n let amisScoped = amis.embed('#root', amisJSON);\n})();"
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}
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}
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```
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language 支持从上下文获取数据
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```schema
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{
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"type": "page",
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"data": {
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"lang": "javascript"
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},
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"body": {
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"type": "code",
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"language": "${lang}",
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"value": "function amis() {\n console.log('amis');\n}"
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}
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}
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```
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## 动态数据
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可以使用 name 来从上下文来获取数据，比如
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```schema
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{
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"type": "page",
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"data": {
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"sourcecode": "<div>html</div>"
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},
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"body": {
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"type": "code",
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"language": "html",
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"name": "sourcecode"
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}
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}
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```
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因此它还能放在表单、crud 中实现代码的展现。
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## 主题及 tab 大小
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通过 `editorTheme` 设置主题，`tagSize` 设置 tab 宽度
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```schema: scope="body"
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{
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"type": "code",
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"language": "javascript",
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"tagSize": 4,
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"value": "function amis() {\n\tconsole.log('amis');\n}"
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}
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```
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## 超出换行
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> 1.5.1 及以上版本
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通过 `wordWrap` 设置是否折行，默认是折行
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```schema: scope="body"
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{
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"type": "code",
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"language": "typescript",
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"tagSize": 4,
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"wordWrap": false,
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"value": "function amis() {\n\tconsole.log('amis')\tconsole.log('amis')\tconsole.log('amis')\tconsole.log('amis')\tconsole.log('amis')\tconsole.log('amis');\n}"
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}
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```
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## 自定义语言高亮
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还可以通过 `customLang` 参数来自定义高亮，比如下面这个示例
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```schema: scope="body"
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{
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"type": "code",
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"customLang": {
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"name": "myLog",
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"tokens": [
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{
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"name": "custom-error",
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"regex": "\\[error.*",
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"color": "#ff0000",
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"fontStyle": "bold"
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},
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{
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"name": "custom-notice",
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"regex": "\\[notice.*",
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"color": "#FFA500"
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},
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{
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"name": "custom-info",
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"regex": "\\[info.*",
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"color": "#808080"
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},
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{
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"name": "custom-date",
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"regex": "\\[[a-zA-Z 0-9:]+\\]",
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"color": "#008800"
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}
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]
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},
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"value": "[Sun Mar 7 16:02:00 2021] [notice] Apache/1.3.29 (Unix) configured -- resuming normal operations\n[Sun Mar 7 16:02:00 2021] [info] Server built: Feb 27 2021 13:56:37\n[Sun Mar 7 16:02:00 2021] [notice] Accept mutex: sysvsem (Default: sysvsem)\n[Sun Mar 7 17:21:44 2021] [info] [client xx.xx.xx.xx] (104)Connection reset by peer: client stopped connection\n[Sun Mar 7 17:23:53 2021] statistics: Use of uninitialized value in concatenation (.) or string at /home/httpd line 528.\n[Sun Mar 7 17:23:53 2021] statistics: Can't create file /home/httpd/twiki/data/Main/WebStatistics.txt - Permission denied\n[Sun Mar 7 17:27:37 2021] [info] [client xx.xx.xx.xx] (104)Connection reset by peer: client stopped connection\n[Sun Mar 7 17:31:39 2021] [info] [client xx.xx.xx.xx] (104)Connection reset by peer: client stopped connection\n[Sun Mar 7 21:16:17 2021] [error] [client xx.xx.xx.xx] File does not exist: /home/httpd/twiki/view/Main/WebHome"
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}
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```
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`customLang` 中主要是 `tokens` 设置，这里是语言词法配置，它有 4 个配置项：
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- `name`：词法名称
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- `regex`：词法的正则匹配，注意因为是在字符串中，这里正则中如果遇到 `\` 需要写成 `\\`
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- `regexFlags`: 可选，正则的标志参数
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- `color`：颜色
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- `fontStyle`: 可选，字体样式，比如 `bold` 代表加粗
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## 属性表
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| 属性名 | 类型 | 默认值 | 说明 |
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| ----------- | -------- | ------ | ---------------------------------- |
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| className | `string` | | 外层 CSS 类名 |
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| value | `string` | | 显示的颜色值 |
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| name | `string` | | 在其他组件中，时，用作变量映射 |
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| language | `string` | | 所使用的高亮语言，默认是 plaintext |
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| tabSize | `number` | 4 | 默认 tab 大小 |
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| editorTheme | `string` | 'vs' | 主题，还有 'vs-dark' |
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| wordWrap | `string` | `true` | 是否折行 |
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