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# coding: utf-8
from __future__ import absolute_import
import warnings
import textwrap
from ruamel.yaml.compat import utf8
if False: # MYPY
from typing import Any, Dict, Optional, List, Text # NOQA
__all__ = [
'FileMark', 'StringMark', 'CommentMark', 'YAMLError', 'MarkedYAMLError',
'ReusedAnchorWarning', 'UnsafeLoaderWarning', 'MarkedYAMLWarning',
'MarkedYAMLFutureWarning',
]
class StreamMark(object):
__slots__ = 'name', 'index', 'line', 'column',
def __init__(self, name, index, line, column):
# type: (Any, int, int, int) -> None
self.name = name
self.index = index
self.line = line
self.column = column
def __str__(self):
# type: () -> Any
where = " in \"%s\", line %d, column %d" \
% (self.name, self.line + 1, self.column + 1)
return where
class FileMark(StreamMark):
__slots__ = ()
class StringMark(StreamMark):
__slots__ = 'name', 'index', 'line', 'column', 'buffer', 'pointer',
def __init__(self, name, index, line, column, buffer, pointer):
# type: (Any, int, int, int, Any, Any) -> None
StreamMark.__init__(self, name, index, line, column)
self.buffer = buffer
self.pointer = pointer
def get_snippet(self, indent=4, max_length=75):
# type: (int, int) -> Any
if self.buffer is None: # always False
return None
head = ''
start = self.pointer
while (start > 0 and
self.buffer[start - 1] not in u'\0\r\n\x85\u2028\u2029'):
start -= 1
if self.pointer - start > max_length / 2 - 1:
head = ' ... '
start += 5
break
tail = ''
end = self.pointer
while (end < len(self.buffer) and
self.buffer[end] not in u'\0\r\n\x85\u2028\u2029'):
end += 1
if end - self.pointer > max_length / 2 - 1:
tail = ' ... '
end -= 5
break
snippet = utf8(self.buffer[start:end])
caret = '^'
caret = '^ (line: {})'.format(self.line + 1)
return ' ' * indent + head + snippet + tail + '\n' \
+ ' ' * (indent + self.pointer - start + len(head)) + caret
def __str__(self):
# type: () -> Any
snippet = self.get_snippet()
where = " in \"%s\", line %d, column %d" \
% (self.name, self.line + 1, self.column + 1)
if snippet is not None:
where += ":\n" + snippet
return where
class CommentMark(object):
__slots__ = 'column',
def __init__(self, column):
# type: (Any) -> None
self.column = column
class YAMLError(Exception):
pass
class MarkedYAMLError(YAMLError):
def __init__(self, context=None, context_mark=None,
problem=None, problem_mark=None, note=None, warn=None):
# type: (Any, Any, Any, Any, Any, Any) -> None
self.context = context
self.context_mark = context_mark
self.problem = problem
self.problem_mark = problem_mark
self.note = note
# warn is ignored
def __str__(self):
# type: () -> Any
lines = [] # type: List[str]
if self.context is not None:
lines.append(self.context)
if self.context_mark is not None \
and (self.problem is None or self.problem_mark is None or
self.context_mark.name != self.problem_mark.name or
self.context_mark.line != self.problem_mark.line or
self.context_mark.column != self.problem_mark.column):
lines.append(str(self.context_mark))
if self.problem is not None:
lines.append(self.problem)
if self.problem_mark is not None:
lines.append(str(self.problem_mark))
if self.note is not None and self.note:
note = textwrap.dedent(self.note) # type: ignore
lines.append(note)
return '\n'.join(lines)
class YAMLStreamError(Exception):
pass
class YAMLWarning(Warning):
pass
class MarkedYAMLWarning(YAMLWarning):
def __init__(self, context=None, context_mark=None,
problem=None, problem_mark=None, note=None, warn=None):
# type: (Any, Any, Any, Any, Any, Any) -> None
self.context = context
self.context_mark = context_mark
self.problem = problem
self.problem_mark = problem_mark
self.note = note
self.warn = warn
def __str__(self):
# type: () -> Any
lines = [] # type: List[str]
if self.context is not None:
lines.append(self.context)
if self.context_mark is not None \
and (self.problem is None or self.problem_mark is None or
self.context_mark.name != self.problem_mark.name or
self.context_mark.line != self.problem_mark.line or
self.context_mark.column != self.problem_mark.column):
lines.append(str(self.context_mark))
if self.problem is not None:
lines.append(self.problem)
if self.problem_mark is not None:
lines.append(str(self.problem_mark))
if self.note is not None and self.note:
note = textwrap.dedent(self.note) # type: ignore
lines.append(note)
if self.warn is not None and self.warn:
warn = textwrap.dedent(self.warn) # type: ignore
lines.append(warn)
return '\n'.join(lines)
class ReusedAnchorWarning(YAMLWarning):
pass
class UnsafeLoaderWarning(YAMLWarning):
text = """
The default 'Loader' for 'load(stream)' without further arguments can be unsafe.
Use 'load(stream, Loader=ruamel.yaml.Loader)' explicitly if that is OK.
Alternatively include the following in your code:
import warnings
warnings.simplefilter('ignore', ruamel.yaml.error.UnsafeLoaderWarning)
In most other cases you should consider using 'safe_load(stream)'"""
pass
warnings.simplefilter('once', UnsafeLoaderWarning)
class MantissaNoDotYAML1_1Warning(YAMLWarning):
def __init__(self, node, flt_str):
self.node = node
self.flt = flt_str
def __str__(self):
line = self.node.start_mark.line
col = self.node.start_mark.column
return """
In YAML 1.1 floating point values should have a dot ('.') in their mantissa.
See the Floating-Point Language-Independent Type for YAML™ Version 1.1 specification
( http://yaml.org/type/float.html ). This dot is not required for JSON nor for YAML 1.2
Correct your float: "{}" on line: {}, column: {}
or alternatively include the following in your code:
import warnings
warnings.simplefilter('ignore', ruamel.yaml.error.MantissaNoDotYAML1_1Warning)
""".format(self.flt, line, col)
warnings.simplefilter('once', MantissaNoDotYAML1_1Warning)
class YAMLFutureWarning(Warning):
pass
class MarkedYAMLFutureWarning(YAMLFutureWarning):
def __init__(self, context=None, context_mark=None,
problem=None, problem_mark=None, note=None, warn=None):
# type: (Any, Any, Any, Any, Any, Any) -> None
self.context = context
self.context_mark = context_mark
self.problem = problem
self.problem_mark = problem_mark
self.note = note
self.warn = warn
def __str__(self):
# type: () -> Any
lines = [] # type: List[str]
if self.context is not None:
lines.append(self.context)
if self.context_mark is not None \
and (self.problem is None or self.problem_mark is None or
self.context_mark.name != self.problem_mark.name or
self.context_mark.line != self.problem_mark.line or
self.context_mark.column != self.problem_mark.column):
lines.append(str(self.context_mark))
if self.problem is not None:
lines.append(self.problem)
if self.problem_mark is not None:
lines.append(str(self.problem_mark))
if self.note is not None and self.note:
note = textwrap.dedent(self.note) # type: ignore
lines.append(note)
if self.warn is not None and self.warn:
warn = textwrap.dedent(self.warn) # type: ignore
lines.append(warn)
return '\n'.join(lines)
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