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      1 # This file is a minimal clang-format sublime-integration. To install:
      2 # - Change 'binary' if clang-format is not on the path (see below).
      3 # - Put this file into your sublime Packages directory, e.g. on Linux:
      4 #     ~/.config/sublime-text-2/Packages/User/clang-format-sublime.py
      5 # - Add a key binding:
      6 #     { "keys": ["ctrl+shift+c"], "command": "clang_format" },
      7 #
      8 # With this integration you can press the bound key and clang-format will
      9 # format the current lines and selections for all cursor positions. The lines
     10 # or regions are extended to the next bigger syntactic entities.
     11 #
     12 # It operates on the current, potentially unsaved buffer and does not create
     13 # or save any files. To revert a formatting, just undo.
     14 
     15 from __future__ import print_function
     16 import sublime
     17 import sublime_plugin
     18 import subprocess
     19 
     20 # Change this to the full path if clang-format is not on the path.
     21 binary = 'clang-format'
     22 
     23 # Change this to format according to other formatting styles. See the output of
     24 # 'clang-format --help' for a list of supported styles. The default looks for
     25 # a '.clang-format' or '_clang-format' file to indicate the style that should be
     26 # used.
     27 style = 'file'
     28 
     29 class ClangFormatCommand(sublime_plugin.TextCommand):
     30   def run(self, edit):
     31     encoding = self.view.encoding()
     32     if encoding == 'Undefined':
     33       encoding = 'utf-8'
     34     regions = []
     35     command = [binary, '-style', style]
     36     for region in self.view.sel():
     37       regions.append(region)
     38       region_offset = min(region.a, region.b)
     39       region_length = abs(region.b - region.a)
     40       command.extend(['-offset', str(region_offset),
     41                       '-length', str(region_length),
     42                       '-assume-filename', str(self.view.file_name())])
     43     old_viewport_position = self.view.viewport_position()
     44     buf = self.view.substr(sublime.Region(0, self.view.size()))
     45     p = subprocess.Popen(command, stdout=subprocess.PIPE,
     46                          stderr=subprocess.PIPE, stdin=subprocess.PIPE)
     47     output, error = p.communicate(buf.encode(encoding))
     48     if error:
     49       print(error)
     50     self.view.replace(
     51         edit, sublime.Region(0, self.view.size()),
     52         output.decode(encoding))
     53     self.view.sel().clear()
     54     for region in regions:
     55       self.view.sel().add(region)
     56     # FIXME: Without the 10ms delay, the viewport sometimes jumps.
     57     sublime.set_timeout(lambda: self.view.set_viewport_position(
     58       old_viewport_position, False), 10)
     59