tools: Use common hash_file implementation

Change-Id: Idf0dce913e012bfc3bcf12d6cd19d322af69505b

tools/download_file.py

@@ -21,7 +21,7 @@ from os import link, makedirs, path, remove
 import shutil
 from subprocess import check_call, CalledProcessError
 from sys import stderr
-from util import resolve_url
+from util import hash_file, resolve_url
 from zipfile import ZipFile, BadZipfile, LargeZipFile
 
 GERRIT_HOME = path.expanduser('~/.gerritcodereview')
@@ -33,17 +33,6 @@ LEGACY_CACHE_DIR = path.join(GERRIT_HOME, 'buck-cache')
 LOCAL_PROPERTIES = 'local.properties'
 
 
-def hashfile(p):
-  d = sha1()
-  with open(p, 'rb') as f:
-    while True:
-      b = f.read(8192)
-      if not b:
-        break
-      d.update(b)
-  return d.hexdigest()
-
-
 def safe_mkdirs(d):
   if path.isdir(d):
     return
@@ -148,7 +137,7 @@ if not path.exists(cache_ent):
     exit(1)
 
 if args.v:
-  have = hashfile(cache_ent)
+  have = hash_file(sha1(), cache_ent).hexdigest()
   if args.v != have:
     print((
       '%s:\n' +

tools/js/BUCK

@@ -15,5 +15,6 @@ python_binary(
 python_binary(
   name = 'run_npm_binary',
   main = 'run_npm_binary.py',
+  deps = ['//tools:util'],
   visibility = ['PUBLIC'],
 )

tools/js/run_npm_binary.py

@@ -25,16 +25,7 @@ import sys
 import tarfile
 import tempfile
 
-
-def hash_file(p):
-  d = hashlib.sha1()
-  with open(p, 'rb') as f:
-    while True:
-      b = f.read(8192)
-      if not b:
-        break
-      d.update(b)
-  return d.hexdigest()
+from tools import util
 
 
 def extract(path, outdir, bin):
@@ -80,7 +71,8 @@ def main(args):
     return 1
 
   name, version = parts
-  outdir = '%s-%s' % (path[:-len(suffix)], hash_file(path))
+  sha1 = util.hash_file(hashlib.sha1(), path).hexdigest()
+  outdir = '%s-%s' % (path[:-len(suffix)], sha1)
   rel_bin = os.path.join('package', 'bin', name)
   bin = os.path.join(outdir, rel_bin)
   if not os.path.isfile(bin):