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'''
This Python script is part of the easytags plug-in for the Vim text editor. The
Python Interface to Vim is used to load this script which accelerates dynamic
syntax highlighting by reimplementing tag file reading and :syntax command
generation in Python with a focus on doing the least amount of work.
Author: Peter Odding <peter@peterodding.com>
Last Change: October 29, 2011
URL: http://peterodding.com/code/vim/easytags
'''
# TODO Cache the contents of tags files to further improve performance?
import re
import vim
import sys
def easytags_ping():
print 'it works!'
def easytags_gensyncmd(tagsfiles, filetype, tagkinds, syntaxgroup, prefix, suffix, filters, ignoresyntax):
# Get arguments from Vim.
if filters:
tagkinds = filters['kind']
# Shallow parse tags files for matching identifiers.
pattern = '^([^\t]+)\t[^\t]+\t[^\t]+\t' + tagkinds + '\tlanguage:' + filetype
compiled_pattern = re.compile(pattern, re.IGNORECASE)
matches = {}
for fname in tagsfiles:
handle = open(fname)
for line in handle:
m = compiled_pattern.match(line)
if m and ('match' not in filters or re.search(filters['match'], line)) \
and ('nomatch' not in filters or not re.search(filters['nomatch'], line)):
matches[m.group(1)] = True
handle.close()
# Generate Vim :syntax command to highlight identifiers.
patterns, commands = [], []
counter, limit = 0, 1024 * 20
to_escape = re.compile(r'[.*^$/\\~\[\]]')
for ident in matches.keys():
escaped = to_escape.sub(r'\\\0', ident)
patterns.append(escaped)
counter += len(escaped)
if counter > limit:
commands.append(_easytags_makecmd(syntaxgroup, prefix, suffix, patterns, ignoresyntax))
patterns = []
counter = 0
if patterns:
commands.append(_easytags_makecmd(syntaxgroup, prefix, suffix, patterns, ignoresyntax))
return ' | '.join(commands)
def _easytags_makecmd(syntaxgroup, prefix, suffix, patterns, ignoresyntax):
template = r'syntax match %s /%s\%%(%s\)%s/ containedin=ALLBUT,%s'
return template % (syntaxgroup, prefix, r'\|'.join(patterns), suffix, ignoresyntax)
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