Method previewDocument

src/rmarkdown/preview.ts:311–368

(filePath: string, fileName?: string, viewer?: vscode.ViewColumn, currentViewColumn?: vscode.ViewColumn)

    }

    private async previewDocument(filePath: string, fileName?: string, viewer?: vscode.ViewColumn, currentViewColumn?: vscode.ViewColumn): Promise<DisposableProcess | undefined> {
        const knitWorkingDir = this.getKnitDir(knitDir, filePath);
        const knitWorkingDirText = knitWorkingDir ? `${knitWorkingDir}` : '';
        this.rPath = await getRpath();

        const lim = '<<<vsc>>>';
        const re = new RegExp(`.*${lim}(.*)${lim}.*`, 'ms');
        const outputFile = path.join(tmpDir(), crypto.createHash('sha256').update(filePath).digest('hex') + '.html');
        const scriptValues = {
            'VSCR_KNIT_DIR': knitWorkingDirText,
            'VSCR_LIM': lim,
            'VSCR_FILE_PATH': filePath.replace(/\\/g, '/'),
            'VSCR_OUTPUT_FILE': outputFile.replace(/\\/g, '/'),
            'VSCR_TMP_DIR': tmpDir().replace(/\\/g, '/')
        };


        const callback = (dat: string, childProcess?: DisposableProcess) => {
            const outputUrl = re.exec(dat)?.[0]?.replace(re, '$1');
            if (outputUrl) {
                if (viewer !== undefined && fileName) {
                    const autoRefresh = config().get<boolean>('rmarkdown.preview.autoRefresh', false);
                    void this.openPreview(
                        vscode.Uri.file(outputUrl),
                        filePath,
                        fileName,
                        childProcess,
                        viewer,
                        currentViewColumn ?? vscode.ViewColumn.Active,
                        autoRefresh
                    );
                }
                return true;
            }
            return false;
        };

        const onRejected = (filePath: string) => {
            if (this.previewStore.has(filePath)) {
                this.previewStore.delete(filePath);
            }
        };

        if (knitWorkingDir && fileName) {
            return await this.knitWithProgress(
                {
                    workingDirectory: knitWorkingDir,
                    fileName: fileName,
                    filePath: filePath,
                    scriptPath: extensionContext.asAbsolutePath('R/rmarkdown/preview.R'),
                    scriptArgs: scriptValues,
                    rOutputFormat: 'html preview',
                    callback: callback,
                    onRejection: onRejected
                }
            );
        }
    }