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var path = require('path');
var Promise = require('../utils/promise');
var error = require('../utils/error');
var timing = require('../utils/timing');
var Templating = require('../templating');
var JSONUtils = require('../json');
var createTemplateEngine = require('./createTemplateEngine');
var callPageHook = require('./callPageHook');
/**
* Prepare and generate HTML for a page
*
* @param {Output} output
* @param {Page} page
* @return {Promise<Page>}
*/
function generatePage(output, page) {
var book = output.getBook();
var engine = createTemplateEngine(output);
return timing.measure(
'page.generate',
Promise(page)
.then(function(resultPage) {
var file = resultPage.getFile();
var filePath = file.getPath();
var parser = file.getParser();
var context = JSONUtils.encodeOutputWithPage(output, resultPage);
if (!parser) {
return Promise.reject(error.FileNotParsableError({
filename: filePath
}));
}
// Call hook "page:before"
return callPageHook('page:before', output, resultPage)
// Escape code blocks with raw tags
.then(function(currentPage) {
return parser.preparePage(currentPage.getContent());
})
// Render templating syntax
.then(function(content) {
var absoluteFilePath = path.join(book.getContentRoot(), filePath);
return Templating.render(engine, absoluteFilePath, content, context);
})
.then(function(output) {
var content = output.getContent();
return parser.parsePage(content)
.then(function(result) {
return output.setContent(result.content);
});
})
// Post processing for templating syntax
.then(function(output) {
return Templating.postRender(engine, output);
})
// Return new page
.then(function(content) {
return resultPage.set('content', content);
})
// Call final hook
.then(function(currentPage) {
return callPageHook('page', output, currentPage);
});
})
);
}
module.exports = generatePage;
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