clang-format detection cleanup.

.travis.yml

@@ -10,6 +10,12 @@ os:
   - linux
   # - osx
 
+addons:
+  apt:
+    packages:
+      - clang-3.7
+      - clang-format-3.7
+
 git:
   # We handle submodules ourselves in xenia-build setup.
   submodules: false

xenia-build

@@ -215,6 +215,27 @@ def git_submodule_update():
         ])
 
 
+def get_clang_format_binary():
+  """Finds a clang-format binary. Aborts if none is found.
+
+  Returns:
+    A path to the clang-format executable.
+  """
+  attempts = [
+      'C:\\Program Files (x86)\\LLVM\\bin\\clang-format.exe',
+      'clang-format-3.7',
+      'clang-format',
+      ]
+  for binary in attempts:
+    if os.path.exists(binary):
+      return binary
+  print 'ERROR: clang-format is not on PATH'
+  print 'LLVM is available from http://llvm.org/releases/download.html'
+  print 'At least version 3.7 is required.'
+  print 'See docs/style_guide.md for instructions on how to get it.'
+  sys.exit(1)
+
+
 def run_premake(target_os, action):
   """Runs premake on the main project with the given format.
 
@@ -744,15 +765,7 @@ class LintCommand(Command):
         help='Lints all files changed relative to origin/master.')
 
   def execute(self, args, pass_args, cwd):
-    clang_format_binary = 'clang-format'
-    win32_binary = 'C:\\Program Files (x86)\\LLVM\\bin\\clang-format.exe'
-    if os.path.exists(win32_binary):
-      clang_format_binary = win32_binary
-    if not has_bin(clang_format_binary):
-      print 'ERROR: clang-format is not on PATH'
-      print 'LLVM is available from http://llvm.org/releases/download.html'
-      print 'See docs/style_guide.md for instructions on how to get it'
-      return 1
+    clang_format_binary = get_clang_format_binary()
 
     difftemp = '.difftemp.txt'
 
@@ -791,7 +804,7 @@ class LintCommand(Command):
               difftemp,
               ])
           shell_call([
-              'type',
+              'type' if sys.platform=='win32' else 'cat',
               difftemp,
               ])
           if os.path.exists(difftemp): os.remove(difftemp)
@@ -851,15 +864,7 @@ class FormatCommand(Command):
         help='Formats all files changed relative to origin/master.')
 
   def execute(self, args, pass_args, cwd):
-    clang_format_binary = 'clang-format'
-    win32_binary = 'C:\\Program Files (x86)\\LLVM\\bin\\clang-format.exe'
-    if os.path.exists(win32_binary):
-      clang_format_binary = win32_binary
-    if not has_bin(clang_format_binary):
-      print 'ERROR: clang-format is not on PATH'
-      print 'LLVM is available from http://llvm.org/releases/download.html'
-      print 'See docs/style_guide.md for instructions on how to get it'
-      return 1
+    clang_format_binary = get_clang_format_binary()
 
     if args['all']:
       all_files = [os.path.join(root, name)

xeniarc

@@ -2,4 +2,4 @@
 #
 # Useful bash aliases and completions.
 
-alias xb='python xenia-build.py'
+alias xb='python xenia-build'