streamstache

Mustache + Streams for node and browsers.

Example

Given this template:

<div>{foo}</div>
<div>{bar}</div>

var streamstache = require('streamstache');
var fs = require('fs');

var tmpl = streamstache(fs.readFileSync(__dirname + '/multi.html'));
tmpl.pipe(process.stdout);

tmpl.foo = 'bar';

setTimeout(function() {
  tmpl.bar = fs.createReadStream(__dirname + '/lorem.txt');
}, 500);

The output is:

<div>bar</div>
<div>Lorem ipsum dolor sit amet...</div>

Because streamstache is streaming, the output arrives in 2 chunks, as bar is only set after 500ms. The first chunk is:

<div>bar</div>
<div>

The second and last chunk then is:

Lorem ipsum dolor sit amet...</div>

Syntax

Interpolation

{<key>}: Gets replaced with the String or Stream set under key.

Reserved keys:

get
set
setEncoding
pipe

Blocks

Blocks are denoted with {#<key>}...{/<key>} but take on different roles depending on the content in the scope at key.

Array Blocks

When the value for a block is an array, the content is looped over for each element in the array with the scope augmented by the array element value.

Stream Blocks

When the value for a block is a stream, the content is looped over each time a new row arrives, augmenting the scope with the row value until the stream ends.

Boolean Blocks

When the value for a block is anything else, it is treated as a boolean. When a boolean is false, the content between {#key} and {/key} is hidden. Otherwise, the content is shown.

API

todo.

streamstache(tpl[, scope])

streamstache#{key} = value

streamstache#set(key, value)

streamstache#{key}

streamstache#get(key)

streamstache#setEncoding(encoding)

streamstache#pipe(stream)

TODO

figure out the syntax and feature set to support
iteration over streams

Installation

For node or browserify install with npm:

npm install streamstache

For browser usage as a standalone library, grab a build from the dist directory.

License

(MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

juliangruber / streamstache