@sap/cds-dk/lib/init/template.js

Command line client and development toolkit for the SAP Cloud Application Programming Model

const Mustache = require('mustache')
const cds = require('../cds')
const { copy, read, write, exists, readdir, path, isdir, mkdirp } = cds.utils

async function renderAndCopy(from, into = '.', replacements = {}, overwrite = cds.cli.options.force) {
  const srcRoot = path.resolve(from)
  const destRoot = path.resolve(cds.root, into)

  async function walk(src, dest) {
    if (isdir(src)) {
      await mkdirp(dest)
      const entries = await readdir(src)
      return Promise.all(entries.map(name => {
        const renderedName = Mustache.render(name, replacements)
        return walk(path.join(src, name), path.join(dest, renderedName))
      }))
    }

    const extension = path.extname(src)

    if (extension === '.hbs') {
      const destFile = dest.replace(/\.hbs$/, '')
      if (overwrite || !exists(destFile)) {
        const content = await render(src, replacements)
        await write(destFile, content, { spaces: 2 })
      }
      return
    }

    if (overwrite || !exists(dest)) {
      await copy(src, dest)
    }
  }

  return walk(srcRoot, destRoot)
}

async function render(templatePath, values = {}) {
  const content = await read(templatePath, 'utf-8')
  return Mustache.render(content, values)
}

module.exports = {
  render,
  renderAndCopy
}