rana-cli/wakatime/stats.py

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# -*- coding: utf-8 -*-
"""
wakatime.stats
~~~~~~~~~~~~~~
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Stats about files
:copyright: (c) 2013 Alan Hamlett.
:license: BSD, see LICENSE for more details.
"""
import logging
import os
import sys
from .compat import u, open
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from .dependencies import DependencyParser
from .packages.pygments.lexers import (
ClassNotFound,
find_lexer_class,
get_lexer_by_name,
guess_lexer_for_filename,
)
from .packages.pygments.modeline import get_filetype_from_buffer
try:
from .packages import simplejson as json # pragma: nocover
except (ImportError, SyntaxError): # pragma: nocover
import json
log = logging.getLogger('WakaTime')
def get_file_stats(file_name, entity_type='file', lineno=None, cursorpos=None,
plugin=None, alternate_language=None):
if entity_type != 'file':
stats = {
'language': None,
'dependencies': [],
'lines': None,
'lineno': lineno,
'cursorpos': cursorpos,
}
else:
language = standardize_language(alternate_language, plugin)
lexer = get_lexer(language)
if not language:
language, lexer = guess_language(file_name)
parser = DependencyParser(file_name, lexer)
dependencies = parser.parse()
stats = {
'language': language,
'dependencies': dependencies,
'lines': number_lines_in_file(file_name),
'lineno': lineno,
'cursorpos': cursorpos,
}
return stats
def get_lexer(language):
"""Return a Pygments Lexer object for the given language string."""
if not language:
return None
lexer_cls = find_lexer_class(language)
if lexer_cls:
return lexer_cls()
return None
def guess_language(file_name):
"""Guess lexer and language for a file.
Returns (language, lexer) tuple where language is a unicode string.
"""
language = get_language_from_extension(file_name)
lexer = smart_guess_lexer(file_name)
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if language is None and lexer is not None:
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language = u(lexer.name)
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return language, lexer
def smart_guess_lexer(file_name):
"""Guess Pygments lexer for a file.
Looks for a vim modeline in file contents, then compares the accuracy
of that lexer with a second guess. The second guess looks up all lexers
matching the file name, then runs a text analysis for the best choice.
"""
lexer = None
text = get_file_head(file_name)
lexer1, accuracy1 = guess_lexer_using_filename(file_name, text)
lexer2, accuracy2 = guess_lexer_using_modeline(text)
if lexer1:
lexer = lexer1
if (lexer2 and accuracy2 and
(not accuracy1 or accuracy2 > accuracy1)):
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lexer = lexer2 # pragma: nocover
return lexer
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def guess_lexer_using_filename(file_name, text):
"""Guess lexer for given text, limited to lexers for this file's extension.
Returns a tuple of (lexer, accuracy).
"""
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lexer, accuracy = None, None
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try:
lexer = guess_lexer_for_filename(file_name, text)
except:
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pass
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if lexer is not None:
try:
accuracy = lexer.analyse_text(text)
except:
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pass
return lexer, accuracy
def guess_lexer_using_modeline(text):
"""Guess lexer for given text using Vim modeline.
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Returns a tuple of (lexer, accuracy).
"""
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lexer, accuracy = None, None
file_type = None
try:
file_type = get_filetype_from_buffer(text)
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except: # pragma: nocover
pass
if file_type is not None:
try:
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lexer = get_lexer_by_name(file_type)
except ClassNotFound:
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pass
if lexer is not None:
try:
accuracy = lexer.analyse_text(text)
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except: # pragma: nocover
pass
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return lexer, accuracy
def get_language_from_extension(file_name):
"""Returns a matching language for the given file extension.
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"""
filepart, extension = os.path.splitext(file_name)
if os.path.exists(u('{0}{1}').format(u(filepart), u('.c'))) or os.path.exists(u('{0}{1}').format(u(filepart), u('.C'))):
return 'C'
extension = extension.lower()
if extension == '.h':
directory = os.path.dirname(file_name)
available_files = os.listdir(directory)
available_extensions = list(zip(*map(os.path.splitext, available_files)))[1]
available_extensions = [ext.lower() for ext in available_extensions]
if '.cpp' in available_extensions:
return 'C++'
if '.c' in available_extensions:
return 'C'
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return None
def number_lines_in_file(file_name):
lines = 0
try:
with open(file_name, 'r', encoding='utf-8') as fh:
for line in fh:
lines += 1
except: # pragma: nocover
try:
with open(file_name, 'r', encoding=sys.getfilesystemencoding()) as fh:
for line in fh:
lines += 1
except:
return None
return lines
def standardize_language(language, plugin):
"""Maps a string to the equivalent Pygments language."""
if not language:
return None
# standardize language for this plugin
if plugin:
plugin = plugin.split(' ')[-1].split('/')[0].split('-')[0]
standardized = get_language_from_json(language, plugin)
if standardized is not None:
return standardized
# standardize language against default languages
standardized = get_language_from_json(language, 'default')
return standardized
def get_language_from_json(language, key):
"""Finds the given language in a json file."""
file_name = os.path.join(
os.path.dirname(__file__),
'languages',
'{0}.json').format(key.lower())
try:
with open(file_name, 'r', encoding='utf-8') as fh:
languages = json.loads(fh.read())
if languages.get(language.lower()):
return languages[language.lower()]
except:
pass
return None
def get_file_head(file_name):
"""Returns the first 512000 bytes of the file's contents."""
text = None
try:
with open(file_name, 'r', encoding='utf-8') as fh:
text = fh.read(512000)
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except:
try:
with open(file_name, 'r', encoding=sys.getfilesystemencoding()) as fh:
text = fh.read(512000) # pragma: nocover
except:
log.traceback(logging.DEBUG)
return text