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128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
8 years ago
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#!/usr/bin/env python
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# encoding: utf-8
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"""Parses snipMate files."""
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import os
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import glob
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from UltiSnips import _vim
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from UltiSnips.snippet.definition import SnipMateSnippetDefinition
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from UltiSnips.snippet.source.file._base import SnippetFileSource
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from UltiSnips.snippet.source.file._common import handle_extends
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from UltiSnips.text import LineIterator, head_tail
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def _splitall(path):
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"""Split 'path' into all its components."""
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# From http://my.safaribooksonline.com/book/programming/
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# python/0596001673/files/pythoncook-chp-4-sect-16
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allparts = []
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while True:
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parts = os.path.split(path)
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if parts[0] == path: # sentinel for absolute paths
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allparts.insert(0, parts[0])
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break
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elif parts[1] == path: # sentinel for relative paths
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allparts.insert(0, parts[1])
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break
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else:
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path = parts[0]
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allparts.insert(0, parts[1])
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return allparts
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def snipmate_files_for(ft):
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"""Returns all snipMate files we need to look at for 'ft'."""
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if ft == 'all':
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ft = '_'
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patterns = [
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'%s.snippets' % ft,
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os.path.join(ft, '*.snippets'),
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os.path.join(ft, '*.snippet'),
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os.path.join(ft, '*/*.snippet'),
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]
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ret = set()
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for rtp in _vim.eval('&runtimepath').split(','):
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path = os.path.realpath(os.path.expanduser(
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os.path.join(rtp, 'snippets')))
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for pattern in patterns:
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for fn in glob.glob(os.path.join(path, pattern)):
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ret.add(fn)
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return ret
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def _parse_snippet_file(content, full_filename):
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"""Parses 'content' assuming it is a .snippet file and yields events."""
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filename = full_filename[:-len('.snippet')] # strip extension
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segments = _splitall(filename)
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segments = segments[segments.index('snippets') + 1:]
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assert len(segments) in (2, 3)
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trigger = segments[1]
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description = segments[2] if 2 < len(segments) else ''
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# Chomp \n if any.
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if content and content.endswith(os.linesep):
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content = content[:-len(os.linesep)]
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yield 'snippet', (SnipMateSnippetDefinition(trigger, content,
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description, full_filename),)
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def _parse_snippet(line, lines, filename):
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"""Parse a snippet defintions."""
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start_line_index = lines.line_index
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trigger, description = head_tail(line[len('snippet'):].lstrip())
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content = ''
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while True:
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next_line = lines.peek()
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if next_line is None:
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break
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if next_line.strip() and not next_line.startswith('\t'):
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break
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line = next(lines)
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if line[0] == '\t':
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line = line[1:]
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content += line
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content = content[:-1] # Chomp the last newline
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return 'snippet', (SnipMateSnippetDefinition(
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trigger, content, description, '%s:%i' % (filename, start_line_index)),)
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def _parse_snippets_file(data, filename):
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"""Parse 'data' assuming it is a .snippets file.
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Yields events in the file.
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"""
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lines = LineIterator(data)
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for line in lines:
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if not line.strip():
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continue
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head, tail = head_tail(line)
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if head == 'extends':
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yield handle_extends(tail, lines.line_index)
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elif head in 'snippet':
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snippet = _parse_snippet(line, lines, filename)
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if snippet is not None:
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yield snippet
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elif head and not head.startswith('#'):
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yield 'error', ('Invalid line %r' % line.rstrip(), lines.line_index)
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class SnipMateFileSource(SnippetFileSource):
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"""Manages all snipMate snippet definitions found in rtp."""
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def _get_all_snippet_files_for(self, ft):
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return snipmate_files_for(ft)
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def _parse_snippet_file(self, filedata, filename):
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if filename.lower().endswith('snippet'):
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for event, data in _parse_snippet_file(filedata, filename):
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yield event, data
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else:
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for event, data in _parse_snippets_file(filedata, filename):
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yield event, data
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