var compile = function(name, pipeline, opts) {
pipeline = pipeline
.map(function(p, i) {
if (typeof p === 'string') p = {command:p}
if (typeof p === 'function') p = {exports:p, module:true}
if (!p.params) p.params = [].concat(name, opts.params || [])
if (p.command) return compileCommand(p, opts)
if (p.module) return compileModule(p, opts)
throw new Error('Unsupported pipeline #'+i+' in '+name)
})
return splicer(pipeline)
}
var compile = function(name, pipeline, opts) {
var wrap = function(i, msg, stream) {
if (!process.env.DEBUG) return stream
return splicer([debug('#'+i+ ' stdin: '+msg), stream, debug('#'+i+' stdout: '+msg)])
}
pipeline = pipeline
.map(function(p, i) {
if (typeof p === 'string') p = {command:p}
if (typeof p === 'function') p = {exports:p, module:true}
if (!p.params) p.params = [].concat(name, opts.params || [])
if (p.command) return wrap(i, '('+p.command+')', compileCommand(p, opts))
if (p.module) return wrap(i, '('+p.module+')', compileModule(p, opts))
throw new Error('Unsupported pipeline #'+i+' in '+name)
})
return splicer(pipeline)
}
result[key] = function(opts) {
if (Array.isArray(opts)) opts = {params:opts}
opts = xtend(defaults, opts)
if (list.length < 2) return compile(key, list[0] || [], opts)
var output = new stream.PassThrough()
var s = splicer(output)
var i = 0
var loop = function() {
var next = compile(key, list[i++], opts)
if (i === list.length) return s.unshift(next)
next.on('end', function() {
s.shift()
loop()
})
s.unshift(next)
}
loop()
return s
}
var compileModule = function(p, opts) {
if (!p.exports) p.exports = require(resolve.sync(p.module, {basedir:opts.cwd}))
return p.json ? splicer(ldjson.parse(), p.exports(p), ldjson.serialize()) : p.exports(p)
}
var wrap = function(i, msg, stream) {
if (!process.env.DEBUG) return stream
return splicer([debug('#'+i+ ' stdin: '+msg), stream, debug('#'+i+' stdout: '+msg)])
}