63 lines
2.8 KiB
Python
63 lines
2.8 KiB
Python
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import sublime, sublime_plugin
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from functools import partial
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class DetectIndentationCommand(sublime_plugin.TextCommand):
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"""Examines the contents of the buffer to determine the indentation
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settings."""
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def run(self, edit, show_message = True, threshold = 10):
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sample = self.view.substr(sublime.Region(0, min(self.view.size(), 2**14)))
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starts_with_tab = 0
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spaces_list = []
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indented_lines = 0
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for line in sample.split("\n"):
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if not line: continue
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if line[0] == "\t":
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starts_with_tab += 1
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indented_lines += 1
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elif line.startswith(' '):
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spaces = 0
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for ch in line:
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if ch == ' ': spaces += 1
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else: break
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if spaces > 1 and spaces != len(line):
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indented_lines += 1
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spaces_list.append(spaces)
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evidence = [1.0, 1.0, 0.8, 0.9, 0.8, 0.9, 0.9, 0.95, 1.0]
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if indented_lines >= threshold:
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if len(spaces_list) > starts_with_tab:
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for indent in xrange(8, 1, -1):
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same_indent = filter(lambda x: x % indent == 0, spaces_list)
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if len(same_indent) >= evidence[indent] * len(spaces_list):
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if show_message:
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sublime.status_message("Detect Indentation: Setting indentation to "
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+ str(indent) + " spaces")
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self.view.settings().set('translate_tabs_to_spaces', True)
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self.view.settings().set('tab_size', indent)
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return
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for indent in xrange(8, 1, -2):
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same_indent = filter(lambda x: x % indent == 0 or x % indent == 1, spaces_list)
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if len(same_indent) >= evidence[indent] * len(spaces_list):
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if show_message:
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sublime.status_message("Detect Indentation: Setting indentation to "
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+ str(indent) + " spaces")
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self.view.settings().set('translate_tabs_to_spaces', True)
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self.view.settings().set('tab_size', indent)
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return
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elif starts_with_tab >= 0.8 * indented_lines:
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if show_message:
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sublime.status_message("Detect Indentation: Setting indentation to tabs")
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self.view.settings().set('translate_tabs_to_spaces', False)
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class DetectIndentationEventListener(sublime_plugin.EventListener):
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def on_load(self, view):
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if view.settings().get('detect_indentation'):
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is_at_front = view.window() != None
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view.run_command('detect_indentation', {'show_message': is_at_front})
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