Add Tool Path for gofmt

We shouldn't be using the host install gofmt, but the one in the tree
instead.

Bug: None
Test: repo upload w/Tool Path in GLOBAL-PREUPLOAD.cfg
Change-Id: Icfceaeea4b8a77c54b7d90c7d7efa233be4a46ae

2 files changed, 4 insertions, 1 deletions

diff --git a/README.md b/README.md
index b19a68b..d656ef3 100644
--- a/README.md
+++ b/README.md
@@ -176,6 +176,7 @@ distros/versions.  The following tools are recognized:
 * `clang-format`: used for the `clang_format` builtin hook.
 * `cpplint`: used for the `cpplint` builtin hook.
 * `git-clang-format`: used for the `clang_format` builtin hook.
+* `gofmt`: used for the `gofmt` builtin hook.
 * `pylint`: used for the `pylint` builtin hook.
 
 Some variables are available to make it easier to handle OS differences.  These
diff --git a/rh/hooks.py b/rh/hooks.py
index b77ee42..1f59dd2 100644
--- a/rh/hooks.py
+++ b/rh/hooks.py
@@ -330,7 +330,8 @@ def check_gofmt(project, commit, _desc, diff, options=None):
     if not filtered:
         return
 
-    cmd = ['gofmt', '-l'] + options.args((), filtered)
+    gofmt = options.tool_path('gofmt')
+    cmd = [gofmt, '-l'] + options.args((), filtered)
     ret = []
     for d in filtered:
         data = rh.git.get_file_content(commit, d.file)
@@ -442,5 +443,6 @@ TOOL_PATHS = {
     'clang-format': 'clang-format',
     'cpplint': os.path.join(TOOLS_DIR, 'cpplint.py'),
     'git-clang-format': 'git-clang-format',
+    'gofmt': 'gofmt',
     'pylint': 'pylint',
 }