cli: add --human flag to repo stat & stats repo

- Added a `humanize` object to /src/cli/utils with `Bytes` method
that takes bytes and returns Human readable size.
- Used `humanize.Bytes()` method in /commands/stats/repo and
/commands/repo/stat if `--human` flag is passed.

License: MIT
Signed-off-by: Chirag Shinde <[email protected]>

Author: chirag-shinde

src/cli/commands/repo/stat.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const print = require('../../utils').print
+const humanize = require('../../utils').humanize
 
 module.exports = {
   command: 'stat',
@@ -17,7 +18,11 @@ module.exports = {
   handler (argv) {
     argv.resolve((async () => {
       const ipfs = await argv.getIpfs()
-      const stats = await ipfs.repo.stat({ human: argv.human })
+      const stats = await ipfs.repo.stat()
+      if (argv.human) {
+        stats.repoSize = humanize.Bytes(stats.repoSize)
+        stats.storageMax = humanize.Bytes(stats.storageMax)
+      }
       print(`repo status
   number of objects: ${stats.numObjects}
   repo size: ${stats.repoSize}

src/cli/commands/stats/repo.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const print = require('../../utils').print
+const humanize = require('../../utils').humanize
 
 module.exports = {
   command: 'repo',
@@ -17,7 +18,11 @@ module.exports = {
   handler (argv) {
     argv.resolve((async () => {
       const ipfs = await argv.getIpfs()
-      const stats = await ipfs.stats.repo({ human: argv.human })
+      const stats = await ipfs.stats.repo()
+      if (argv.human) {
+        stats.repoSize = humanize.Bytes(stats.repoSize)
+        stats.storageMax = humanize.Bytes(stats.storageMax)
+      }
       print(`repo status
   number of objects: ${stats.numObjects}
   repo size: ${stats.repoSize}

src/cli/utils.js

@@ -135,3 +135,18 @@ exports.singleton = create => {
   })
   return getter
 }
+exports.humanize = {
+  Bytes: (bytes) => {
+    const thresh = 1024
+    if (Math.abs(bytes) < thresh) {
+      return bytes + ' B'
+    }
+    const units = ['kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
+    let unit = -1
+    do {
+      bytes /= thresh
+      ++unit
+    } while (Math.abs(bytes) >= thresh && unit < units.length - 1)
+    return bytes.toFixed(1) + ' ' + units[unit]
+  }
+}