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Ported preview feature from rst-vscode.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,176 @@ | ||
| "use strict"; | ||
| import { workspace, window, ExtensionContext, commands, | ||
| TextEditor, TextDocumentContentProvider, EventEmitter, | ||
| Event, Uri, TextDocumentChangeEvent, ViewColumn, | ||
| TextEditorSelectionChangeEvent, | ||
| TextDocument, Disposable } from "vscode"; | ||
| import { exec } from "child_process"; | ||
| import * as fs from "fs"; | ||
| import * as path from "path"; | ||
| let fileUrl = require("file-url"); | ||
|
|
||
| export function activate(context: ExtensionContext) { | ||
|
|
||
| let previewUri: Uri; | ||
|
|
||
| let provider: RstDocumentContentProvider; | ||
| let registration: Disposable; | ||
|
|
||
| workspace.onDidChangeTextDocument((e: TextDocumentChangeEvent) => { | ||
| if (e.document === window.activeTextEditor.document) { | ||
| provider.update(previewUri); | ||
| } | ||
| }); | ||
|
|
||
| workspace.onDidSaveTextDocument((e: TextDocument) => { | ||
| if (e === window.activeTextEditor.document) { | ||
| provider.update(previewUri); | ||
| } | ||
| }); | ||
|
|
||
| function sendHTMLCommand(displayColumn: ViewColumn): PromiseLike<void> { | ||
| let previewTitle = `Preview: '${path.basename(window.activeTextEditor.document.fileName)}'`; | ||
| provider = new RstDocumentContentProvider(); | ||
| registration = workspace.registerTextDocumentContentProvider("restructuredtext-preview", provider); | ||
| previewUri = Uri.parse(`restructuredtext-preview://preview/${previewTitle}`); | ||
| return commands.executeCommand("vscode.previewHtml", previewUri, displayColumn).then((success) => { | ||
| }, (reason) => { | ||
| console.warn(reason); | ||
| window.showErrorMessage(reason); | ||
| }); | ||
| } | ||
|
|
||
| let previewToSide = commands.registerCommand("restructuredtext.previewToSide", () => { | ||
| let displayColumn: ViewColumn; | ||
| switch (window.activeTextEditor.viewColumn) { | ||
| case ViewColumn.One: | ||
| displayColumn = ViewColumn.Two; | ||
| break; | ||
| case ViewColumn.Two: | ||
| case ViewColumn.Three: | ||
| displayColumn = ViewColumn.Three; | ||
| break; | ||
| } | ||
| return sendHTMLCommand(displayColumn); | ||
| }); | ||
|
|
||
| let preview = commands.registerCommand("restructuredtext.preview", () => { | ||
| return sendHTMLCommand(window.activeTextEditor.viewColumn); | ||
| }); | ||
|
|
||
| context.subscriptions.push(previewToSide, preview, registration); | ||
| } | ||
|
|
||
| // this method is called when your extension is deactivated | ||
| export function deactivate() { | ||
| } | ||
|
|
||
| class RstDocumentContentProvider implements TextDocumentContentProvider { | ||
| private _onDidChange = new EventEmitter<Uri>(); | ||
| private resultText = ""; | ||
|
|
||
| public provideTextDocumentContent(uri: Uri): string | Thenable<string> { | ||
| return this.createRstSnippet(); | ||
| } | ||
|
|
||
| get onDidChange(): Event<Uri> { | ||
| return this._onDidChange.event; | ||
| } | ||
|
|
||
| public update(uri: Uri) { | ||
| this._onDidChange.fire(uri); | ||
| } | ||
|
|
||
| private createRstSnippet(): string | Thenable<string> { | ||
| let editor = window.activeTextEditor; | ||
| if (!(editor.document.languageId === "restructuredtext")) { | ||
| return this.errorSnippet("Active editor doesn't show a reStructuredText document - no properties to preview."); | ||
| } | ||
| return this.preview(editor); | ||
| } | ||
|
|
||
| private errorSnippet(error: string): string { | ||
| return ` | ||
| <body> | ||
| ${error} | ||
| </body>`; | ||
| } | ||
|
|
||
| private buildPage(document: string, headerArgs: string[]): string { | ||
| return ` | ||
| <html lang="en"> | ||
| <head> | ||
| ${headerArgs.join("\n")} | ||
| </head> | ||
| <body> | ||
| ${document} | ||
| </body> | ||
| </html>`; | ||
| } | ||
|
|
||
| private createStylesheet(file: string) { | ||
| let href = fileUrl( | ||
| path.join( | ||
| __dirname, | ||
| "..", | ||
| "..", | ||
| "src", | ||
| "static", | ||
| file | ||
| ) | ||
| ); | ||
| return `<link href="${href}" rel="stylesheet" />`; | ||
| } | ||
|
|
||
| private fixLinks(document: string, documentPath: string): string { | ||
| return document.replace( | ||
| new RegExp("((?:src|href)=[\'\"])(.*?)([\'\"])", "gmi"), (subString: string, p1: string, p2: string, p3: string): string => { | ||
| return [ | ||
| p1, | ||
| fileUrl(path.join( | ||
| path.dirname(documentPath), | ||
| p2 | ||
| )), | ||
| p3 | ||
| ].join(""); | ||
| } | ||
| ); | ||
| } | ||
|
|
||
| public preview(editor: TextEditor): Thenable<string> { | ||
| let doc = editor.document; | ||
| return new Promise<string>((resolve, reject) => { | ||
| let cmd = [ | ||
| "python", | ||
| path.join( | ||
| __dirname, | ||
| "..", | ||
| "..", | ||
| "src", | ||
| "preview.py" | ||
| ), | ||
| doc.fileName | ||
| ].join(" "); | ||
| exec(cmd, (error: Error, stdout: Buffer, stderr: Buffer) => { | ||
| if (error) { | ||
| let errorMessage = [ | ||
| error.name, | ||
| error.message, | ||
| error.stack, | ||
| "", | ||
| stderr.toString() | ||
| ].join("\n"); | ||
| console.error(errorMessage); | ||
| reject(errorMessage); | ||
| } else { | ||
| let result = this.fixLinks(stdout.toString(), editor.document.fileName); | ||
| let headerArgs = [ | ||
| this.createStylesheet("basic.css"), | ||
| this.createStylesheet("default.css") | ||
| ]; | ||
| resolve(this.buildPage(result, headerArgs)); | ||
| } | ||
| }); | ||
| }); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| import sys | ||
| from docutils import core | ||
| filepath = sys.argv[1] | ||
|
|
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| page_string = open(filepath, 'r').read() | ||
|
|
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| # page_string = page_string.encode('utf-8', errors="ignore") | ||
|
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| overrides = {'initial_header_level': 1, | ||
| 'halt_level': 5} | ||
|
|
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| parts = core.publish_parts( | ||
| source=page_string, source_path=filepath, writer_name='html', settings_overrides=overrides) | ||
|
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| html_document = parts['html_body'] | ||
| #remove bom | ||
| html_document = html_document.replace('\ufeff', '') | ||
|
|
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| print(html_document) |
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