mirror of
https://github.com/Tautulli/Tautulli.git
synced 2025-07-10 23:42:37 -07:00
Initial Commit
This commit is contained in:
commit
88daa3fb91
1311 changed files with 256240 additions and 0 deletions
441
lib/mako/lexer.py
Normal file
441
lib/mako/lexer.py
Normal file
|
@ -0,0 +1,441 @@
|
|||
# mako/lexer.py
|
||||
# Copyright (C) 2006-2015 the Mako authors and contributors <see AUTHORS file>
|
||||
#
|
||||
# This module is part of Mako and is released under
|
||||
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
||||
|
||||
"""provides the Lexer class for parsing template strings into parse trees."""
|
||||
|
||||
import re
|
||||
import codecs
|
||||
from mako import parsetree, exceptions, compat
|
||||
from mako.pygen import adjust_whitespace
|
||||
|
||||
_regexp_cache = {}
|
||||
|
||||
class Lexer(object):
|
||||
def __init__(self, text, filename=None,
|
||||
disable_unicode=False,
|
||||
input_encoding=None, preprocessor=None):
|
||||
self.text = text
|
||||
self.filename = filename
|
||||
self.template = parsetree.TemplateNode(self.filename)
|
||||
self.matched_lineno = 1
|
||||
self.matched_charpos = 0
|
||||
self.lineno = 1
|
||||
self.match_position = 0
|
||||
self.tag = []
|
||||
self.control_line = []
|
||||
self.ternary_stack = []
|
||||
self.disable_unicode = disable_unicode
|
||||
self.encoding = input_encoding
|
||||
|
||||
if compat.py3k and disable_unicode:
|
||||
raise exceptions.UnsupportedError(
|
||||
"Mako for Python 3 does not "
|
||||
"support disabling Unicode")
|
||||
|
||||
if preprocessor is None:
|
||||
self.preprocessor = []
|
||||
elif not hasattr(preprocessor, '__iter__'):
|
||||
self.preprocessor = [preprocessor]
|
||||
else:
|
||||
self.preprocessor = preprocessor
|
||||
|
||||
@property
|
||||
def exception_kwargs(self):
|
||||
return {'source': self.text,
|
||||
'lineno': self.matched_lineno,
|
||||
'pos': self.matched_charpos,
|
||||
'filename': self.filename}
|
||||
|
||||
def match(self, regexp, flags=None):
|
||||
"""compile the given regexp, cache the reg, and call match_reg()."""
|
||||
|
||||
try:
|
||||
reg = _regexp_cache[(regexp, flags)]
|
||||
except KeyError:
|
||||
if flags:
|
||||
reg = re.compile(regexp, flags)
|
||||
else:
|
||||
reg = re.compile(regexp)
|
||||
_regexp_cache[(regexp, flags)] = reg
|
||||
|
||||
return self.match_reg(reg)
|
||||
|
||||
def match_reg(self, reg):
|
||||
"""match the given regular expression object to the current text
|
||||
position.
|
||||
|
||||
if a match occurs, update the current text and line position.
|
||||
|
||||
"""
|
||||
|
||||
mp = self.match_position
|
||||
|
||||
match = reg.match(self.text, self.match_position)
|
||||
if match:
|
||||
(start, end) = match.span()
|
||||
if end == start:
|
||||
self.match_position = end + 1
|
||||
else:
|
||||
self.match_position = end
|
||||
self.matched_lineno = self.lineno
|
||||
lines = re.findall(r"\n", self.text[mp:self.match_position])
|
||||
cp = mp - 1
|
||||
while (cp >= 0 and cp < self.textlength and self.text[cp] != '\n'):
|
||||
cp -= 1
|
||||
self.matched_charpos = mp - cp
|
||||
self.lineno += len(lines)
|
||||
#print "MATCHED:", match.group(0), "LINE START:",
|
||||
# self.matched_lineno, "LINE END:", self.lineno
|
||||
#print "MATCH:", regexp, "\n", self.text[mp : mp + 15], \
|
||||
# (match and "TRUE" or "FALSE")
|
||||
return match
|
||||
|
||||
def parse_until_text(self, *text):
|
||||
startpos = self.match_position
|
||||
text_re = r'|'.join(text)
|
||||
brace_level = 0
|
||||
while True:
|
||||
match = self.match(r'#.*\n')
|
||||
if match:
|
||||
continue
|
||||
match = self.match(r'(\"\"\"|\'\'\'|\"|\')((?<!\\)\\\1|.)*?\1',
|
||||
re.S)
|
||||
if match:
|
||||
continue
|
||||
match = self.match(r'(%s)' % text_re)
|
||||
if match:
|
||||
if match.group(1) == '}' and brace_level > 0:
|
||||
brace_level -= 1
|
||||
continue
|
||||
return \
|
||||
self.text[startpos:
|
||||
self.match_position - len(match.group(1))],\
|
||||
match.group(1)
|
||||
match = self.match(r"(.*?)(?=\"|\'|#|%s)" % text_re, re.S)
|
||||
if match:
|
||||
brace_level += match.group(1).count('{')
|
||||
brace_level -= match.group(1).count('}')
|
||||
continue
|
||||
raise exceptions.SyntaxException(
|
||||
"Expected: %s" %
|
||||
','.join(text),
|
||||
**self.exception_kwargs)
|
||||
|
||||
def append_node(self, nodecls, *args, **kwargs):
|
||||
kwargs.setdefault('source', self.text)
|
||||
kwargs.setdefault('lineno', self.matched_lineno)
|
||||
kwargs.setdefault('pos', self.matched_charpos)
|
||||
kwargs['filename'] = self.filename
|
||||
node = nodecls(*args, **kwargs)
|
||||
if len(self.tag):
|
||||
self.tag[-1].nodes.append(node)
|
||||
else:
|
||||
self.template.nodes.append(node)
|
||||
# build a set of child nodes for the control line
|
||||
# (used for loop variable detection)
|
||||
# also build a set of child nodes on ternary control lines
|
||||
# (used for determining if a pass needs to be auto-inserted
|
||||
if self.control_line:
|
||||
control_frame = self.control_line[-1]
|
||||
control_frame.nodes.append(node)
|
||||
if not (isinstance(node, parsetree.ControlLine) and
|
||||
control_frame.is_ternary(node.keyword)):
|
||||
if self.ternary_stack and self.ternary_stack[-1]:
|
||||
self.ternary_stack[-1][-1].nodes.append(node)
|
||||
if isinstance(node, parsetree.Tag):
|
||||
if len(self.tag):
|
||||
node.parent = self.tag[-1]
|
||||
self.tag.append(node)
|
||||
elif isinstance(node, parsetree.ControlLine):
|
||||
if node.isend:
|
||||
self.control_line.pop()
|
||||
self.ternary_stack.pop()
|
||||
elif node.is_primary:
|
||||
self.control_line.append(node)
|
||||
self.ternary_stack.append([])
|
||||
elif self.control_line and \
|
||||
self.control_line[-1].is_ternary(node.keyword):
|
||||
self.ternary_stack[-1].append(node)
|
||||
elif self.control_line and \
|
||||
not self.control_line[-1].is_ternary(node.keyword):
|
||||
raise exceptions.SyntaxException(
|
||||
"Keyword '%s' not a legal ternary for keyword '%s'" %
|
||||
(node.keyword, self.control_line[-1].keyword),
|
||||
**self.exception_kwargs)
|
||||
|
||||
_coding_re = re.compile(r'#.*coding[:=]\s*([-\w.]+).*\r?\n')
|
||||
|
||||
def decode_raw_stream(self, text, decode_raw, known_encoding, filename):
|
||||
"""given string/unicode or bytes/string, determine encoding
|
||||
from magic encoding comment, return body as unicode
|
||||
or raw if decode_raw=False
|
||||
|
||||
"""
|
||||
if isinstance(text, compat.text_type):
|
||||
m = self._coding_re.match(text)
|
||||
encoding = m and m.group(1) or known_encoding or 'ascii'
|
||||
return encoding, text
|
||||
|
||||
if text.startswith(codecs.BOM_UTF8):
|
||||
text = text[len(codecs.BOM_UTF8):]
|
||||
parsed_encoding = 'utf-8'
|
||||
m = self._coding_re.match(text.decode('utf-8', 'ignore'))
|
||||
if m is not None and m.group(1) != 'utf-8':
|
||||
raise exceptions.CompileException(
|
||||
"Found utf-8 BOM in file, with conflicting "
|
||||
"magic encoding comment of '%s'" % m.group(1),
|
||||
text.decode('utf-8', 'ignore'),
|
||||
0, 0, filename)
|
||||
else:
|
||||
m = self._coding_re.match(text.decode('utf-8', 'ignore'))
|
||||
if m:
|
||||
parsed_encoding = m.group(1)
|
||||
else:
|
||||
parsed_encoding = known_encoding or 'ascii'
|
||||
|
||||
if decode_raw:
|
||||
try:
|
||||
text = text.decode(parsed_encoding)
|
||||
except UnicodeDecodeError:
|
||||
raise exceptions.CompileException(
|
||||
"Unicode decode operation of encoding '%s' failed" %
|
||||
parsed_encoding,
|
||||
text.decode('utf-8', 'ignore'),
|
||||
0, 0, filename)
|
||||
|
||||
return parsed_encoding, text
|
||||
|
||||
def parse(self):
|
||||
self.encoding, self.text = self.decode_raw_stream(self.text,
|
||||
not self.disable_unicode,
|
||||
self.encoding,
|
||||
self.filename,)
|
||||
|
||||
for preproc in self.preprocessor:
|
||||
self.text = preproc(self.text)
|
||||
|
||||
# push the match marker past the
|
||||
# encoding comment.
|
||||
self.match_reg(self._coding_re)
|
||||
|
||||
self.textlength = len(self.text)
|
||||
|
||||
while (True):
|
||||
if self.match_position > self.textlength:
|
||||
break
|
||||
|
||||
if self.match_end():
|
||||
break
|
||||
if self.match_expression():
|
||||
continue
|
||||
if self.match_control_line():
|
||||
continue
|
||||
if self.match_comment():
|
||||
continue
|
||||
if self.match_tag_start():
|
||||
continue
|
||||
if self.match_tag_end():
|
||||
continue
|
||||
if self.match_python_block():
|
||||
continue
|
||||
if self.match_text():
|
||||
continue
|
||||
|
||||
if self.match_position > self.textlength:
|
||||
break
|
||||
raise exceptions.CompileException("assertion failed")
|
||||
|
||||
if len(self.tag):
|
||||
raise exceptions.SyntaxException("Unclosed tag: <%%%s>" %
|
||||
self.tag[-1].keyword,
|
||||
**self.exception_kwargs)
|
||||
if len(self.control_line):
|
||||
raise exceptions.SyntaxException(
|
||||
"Unterminated control keyword: '%s'" %
|
||||
self.control_line[-1].keyword,
|
||||
self.text,
|
||||
self.control_line[-1].lineno,
|
||||
self.control_line[-1].pos, self.filename)
|
||||
return self.template
|
||||
|
||||
def match_tag_start(self):
|
||||
match = self.match(r'''
|
||||
\<% # opening tag
|
||||
|
||||
([\w\.\:]+) # keyword
|
||||
|
||||
((?:\s+\w+|\s*=\s*|".*?"|'.*?')*) # attrname, = \
|
||||
# sign, string expression
|
||||
|
||||
\s* # more whitespace
|
||||
|
||||
(/)?> # closing
|
||||
|
||||
''',
|
||||
|
||||
re.I | re.S | re.X)
|
||||
|
||||
if match:
|
||||
keyword, attr, isend = match.groups()
|
||||
self.keyword = keyword
|
||||
attributes = {}
|
||||
if attr:
|
||||
for att in re.findall(
|
||||
r"\s*(\w+)\s*=\s*(?:'([^']*)'|\"([^\"]*)\")", attr):
|
||||
key, val1, val2 = att
|
||||
text = val1 or val2
|
||||
text = text.replace('\r\n', '\n')
|
||||
attributes[key] = text
|
||||
self.append_node(parsetree.Tag, keyword, attributes)
|
||||
if isend:
|
||||
self.tag.pop()
|
||||
else:
|
||||
if keyword == 'text':
|
||||
match = self.match(r'(.*?)(?=\</%text>)', re.S)
|
||||
if not match:
|
||||
raise exceptions.SyntaxException(
|
||||
"Unclosed tag: <%%%s>" %
|
||||
self.tag[-1].keyword,
|
||||
**self.exception_kwargs)
|
||||
self.append_node(parsetree.Text, match.group(1))
|
||||
return self.match_tag_end()
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_tag_end(self):
|
||||
match = self.match(r'\</%[\t ]*(.+?)[\t ]*>')
|
||||
if match:
|
||||
if not len(self.tag):
|
||||
raise exceptions.SyntaxException(
|
||||
"Closing tag without opening tag: </%%%s>" %
|
||||
match.group(1),
|
||||
**self.exception_kwargs)
|
||||
elif self.tag[-1].keyword != match.group(1):
|
||||
raise exceptions.SyntaxException(
|
||||
"Closing tag </%%%s> does not match tag: <%%%s>" %
|
||||
(match.group(1), self.tag[-1].keyword),
|
||||
**self.exception_kwargs)
|
||||
self.tag.pop()
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_end(self):
|
||||
match = self.match(r'\Z', re.S)
|
||||
if match:
|
||||
string = match.group()
|
||||
if string:
|
||||
return string
|
||||
else:
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_text(self):
|
||||
match = self.match(r"""
|
||||
(.*?) # anything, followed by:
|
||||
(
|
||||
(?<=\n)(?=[ \t]*(?=%|\#\#)) # an eval or line-based
|
||||
# comment preceded by a
|
||||
# consumed newline and whitespace
|
||||
|
|
||||
(?=\${) # an expression
|
||||
|
|
||||
(?=</?[%&]) # a substitution or block or call start or end
|
||||
# - don't consume
|
||||
|
|
||||
(\\\r?\n) # an escaped newline - throw away
|
||||
|
|
||||
\Z # end of string
|
||||
)""", re.X | re.S)
|
||||
|
||||
if match:
|
||||
text = match.group(1)
|
||||
if text:
|
||||
self.append_node(parsetree.Text, text)
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_python_block(self):
|
||||
match = self.match(r"<%(!)?")
|
||||
if match:
|
||||
line, pos = self.matched_lineno, self.matched_charpos
|
||||
text, end = self.parse_until_text(r'%>')
|
||||
# the trailing newline helps
|
||||
# compiler.parse() not complain about indentation
|
||||
text = adjust_whitespace(text) + "\n"
|
||||
self.append_node(
|
||||
parsetree.Code,
|
||||
text,
|
||||
match.group(1) == '!', lineno=line, pos=pos)
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_expression(self):
|
||||
match = self.match(r"\${")
|
||||
if match:
|
||||
line, pos = self.matched_lineno, self.matched_charpos
|
||||
text, end = self.parse_until_text(r'\|', r'}')
|
||||
if end == '|':
|
||||
escapes, end = self.parse_until_text(r'}')
|
||||
else:
|
||||
escapes = ""
|
||||
text = text.replace('\r\n', '\n')
|
||||
self.append_node(
|
||||
parsetree.Expression,
|
||||
text, escapes.strip(),
|
||||
lineno=line, pos=pos)
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_control_line(self):
|
||||
match = self.match(
|
||||
r"(?<=^)[\t ]*(%(?!%)|##)[\t ]*((?:(?:\\r?\n)|[^\r\n])*)"
|
||||
r"(?:\r?\n|\Z)", re.M)
|
||||
if match:
|
||||
operator = match.group(1)
|
||||
text = match.group(2)
|
||||
if operator == '%':
|
||||
m2 = re.match(r'(end)?(\w+)\s*(.*)', text)
|
||||
if not m2:
|
||||
raise exceptions.SyntaxException(
|
||||
"Invalid control line: '%s'" %
|
||||
text,
|
||||
**self.exception_kwargs)
|
||||
isend, keyword = m2.group(1, 2)
|
||||
isend = (isend is not None)
|
||||
|
||||
if isend:
|
||||
if not len(self.control_line):
|
||||
raise exceptions.SyntaxException(
|
||||
"No starting keyword '%s' for '%s'" %
|
||||
(keyword, text),
|
||||
**self.exception_kwargs)
|
||||
elif self.control_line[-1].keyword != keyword:
|
||||
raise exceptions.SyntaxException(
|
||||
"Keyword '%s' doesn't match keyword '%s'" %
|
||||
(text, self.control_line[-1].keyword),
|
||||
**self.exception_kwargs)
|
||||
self.append_node(parsetree.ControlLine, keyword, isend, text)
|
||||
else:
|
||||
self.append_node(parsetree.Comment, text)
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def match_comment(self):
|
||||
"""matches the multiline version of a comment"""
|
||||
match = self.match(r"<%doc>(.*?)</%doc>", re.S)
|
||||
if match:
|
||||
self.append_node(parsetree.Comment, match.group(1))
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
Loading…
Add table
Add a link
Reference in a new issue