stub file viewer

2 files changed, 29 insertions, 0 deletions

diff --git a/app/relay/remote.js b/app/relay/remote.js
index 1c9875f..a0639a5 100644
--- a/app/relay/remote.js
+++ b/app/relay/remote.js
@@ -146,6 +146,16 @@ remote.on('system', (data) => {
         })
       })
       break
+    case 'read_file':
+      runner.read_file(data.payload, (file) => {
+        remote.emit('system_res', {
+          type: 'read_file',
+          query: data.payload,
+          uuid: data.uuid,
+          file,
+        })
+      })
+      break
     case 'get_status':
       remote.emit('system_res', {
         type: 'relay_status',
diff --git a/app/relay/runner.js b/app/relay/runner.js
index 44f2554..f1e3497 100644
--- a/app/relay/runner.js
+++ b/app/relay/runner.js
@@ -11,6 +11,7 @@ import readdir from 'fs-readdir-promise'
 
 import * as q from './queue'
 
+const MAX_TRANSFER_SIZE = 1024 * 1024 * 2.5
 const idle_state = { status: 'IDLE', task: {} }
 
 export const state = {
@@ -169,6 +170,24 @@ export function module_dir(opt, dir){
   return path.join(module.cwd, dir.replace(/\.\.?\//g, ''))
 }
 
+export function read_file(opt, cb) {
+  const fn = module_dir(opt, opt.fn)
+  if (!fn) return cb([])
+  stat_promise(fn).then(stat => {
+    if (stat.size > MAX_TRANSFER_SIZE) {
+      return cb({ error: 'file too large'})
+    }
+    fs.readFile(fn, (err, buf) => cb({
+      error: err,
+      name: opt.fn,
+      path: fn,
+      date: stat.ctime,
+      size: stat.size,
+      buf
+    }))
+  }).catch(() => cb({ error: 'error reading file' }))
+}
+
 export function list_directory(opt, cb) {
   const dir = module_dir(opt, opt.dir)
   if (!dir) return cb([])