Add configurable extension

Author: dignifiedquire

src/index.js

@@ -8,7 +8,7 @@ function Repo (repoPath, options) {
 
   // If options.stores is an abstract-blob-store instead of a map, use it for
   // all stores.
-  if (options.stores.prototype && options.stores.prototype.createWriteSteam) {
+  if (options.stores.prototype && options.stores.prototype.createWriteStream) {
     const store = options.stores
     options.stores = {
       keys: store,

src/stores/datastore.js

@@ -4,8 +4,9 @@ const PREFIX_LENGTH = 8
 
 exports = module.exports
 
-function multihashToPath (multihash) {
-  const filename = multihash.toString('hex') + '.data'
+function multihashToPath (multihash, extension) {
+  extension = extension || 'data'
+  const filename = `${multihash.toString('hex')}.${extension}`
   const folder = filename.slice(0, PREFIX_LENGTH)
   const path = folder + '/' + filename
 
@@ -16,21 +17,36 @@ exports.setUp = (basePath, blobStore, locks) => {
   const store = blobStore(basePath + '/blocks')
 
   return {
-    createReadStream: (multihash) => {
-      const path = multihashToPath(multihash)
+    createReadStream: (multihash, extension) => {
+      const path = multihashToPath(multihash, extension)
       return store.createReadStream(path)
     },
 
-    createWriteStream: (multihash, cb) => {
-      const path = multihashToPath(multihash)
+    createWriteStream: (multihash, extension, cb) => {
+      if (typeof extension === 'function') {
+        cb = extension
+        extension = undefined
+      }
+
+      const path = multihashToPath(multihash, extension)
       return store.createWriteStream(path, cb)
     },
-    exists: (multihash, cb) => {
-      const path = multihashToPath(multihash)
+    exists: (multihash, extension, cb) => {
+      if (typeof extension === 'function') {
+        cb = extension
+        extension = undefined
+      }
+
+      const path = multihashToPath(multihash, extension)
       return store.exists(path, cb)
     },
-    remove: (multihash, cb) => {
-      const path = multihashToPath(multihash)
+    remove: (multihash, extension, cb) => {
+      if (typeof extension === 'function') {
+        cb = extension
+        extension = undefined
+      }
+
+      const path = multihashToPath(multihash, extension)
       return store.remove(path, cb)
     }
   }