reprism/src/languages/http.js

Modular Syntax highlighting for the web

export default {
  language: 'http',
  init: Prism => {
    Prism.languages.http = {
      'request-line': {
        pattern: /^(?:POST|GET|PUT|DELETE|OPTIONS|PATCH|TRACE|CONNECT)\shttps?:\/\/\S+\sHTTP\/[0-9.]+/m,
        inside: {
          // HTTP Verb
          property: /^(?:POST|GET|PUT|DELETE|OPTIONS|PATCH|TRACE|CONNECT)\b/,
          // Path or query argument
          'attr-name': /:\w+/,
        },
      },
      'response-status': {
        pattern: /^HTTP\/1.[01] \d+.*/m,
        inside: {
          // Status, e.g. 200 OK
          property: {
            pattern: /(^HTTP\/1.[01] )\d+.*/i,
            lookbehind: true,
          },
        },
      },
      // HTTP header name
      'header-name': {
        pattern: /^[\w-]+:(?=.)/m,
        alias: 'keyword',
      },
    }

    // Create a mapping of Content-Type headers to language definitions
    const httpLanguages = {
      'application/json': Prism.languages.javascript,
      'application/xml': Prism.languages.markup,
      'text/xml': Prism.languages.markup,
      'text/html': Prism.languages.markup,
    }

    // Insert each content type parser that has its associated language
    // currently loaded.
    for (const contentType in httpLanguages) {
      if (httpLanguages[contentType]) {
        const options = {}
        options[contentType] = {
          pattern: new RegExp(
            `(content-type:\\s*${
              contentType
            }[\\w\\W]*?)(?:\\r?\\n|\\r){2}[\\w\\W]*`,
            'i'
          ),
          lookbehind: true,
          inside: {
            rest: httpLanguages[contentType],
          },
        }
        Prism.languages.insertBefore('http', 'header-name', options)
      }
    }
  },
}