diff options
Diffstat (limited to 'external_libs/python/PyYAML-3.01/lib/yaml/reader.py')
| -rw-r--r-- | external_libs/python/PyYAML-3.01/lib/yaml/reader.py | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/external_libs/python/PyYAML-3.01/lib/yaml/reader.py b/external_libs/python/PyYAML-3.01/lib/yaml/reader.py deleted file mode 100644 index beb76d0a..00000000 --- a/external_libs/python/PyYAML-3.01/lib/yaml/reader.py +++ /dev/null @@ -1,222 +0,0 @@ -# This module contains abstractions for the input stream. You don't have to -# looks further, there are no pretty code. -# -# We define two classes here. -# -# Mark(source, line, column) -# It's just a record and its only use is producing nice error messages. -# Parser does not use it for any other purposes. -# -# Reader(source, data) -# Reader determines the encoding of `data` and converts it to unicode. -# Reader provides the following methods and attributes: -# reader.peek(length=1) - return the next `length` characters -# reader.forward(length=1) - move the current position to `length` characters. -# reader.index - the number of the current character. -# reader.line, stream.column - the line and the column of the current character. - -__all__ = ['Reader', 'ReaderError'] - -from error import YAMLError, Mark - -import codecs, re - -# Unfortunately, codec functions in Python 2.3 does not support the `finish` -# arguments, so we have to write our own wrappers. - -try: - codecs.utf_8_decode('', 'strict', False) - from codecs import utf_8_decode, utf_16_le_decode, utf_16_be_decode - -except TypeError: - - def utf_16_le_decode(data, errors, finish=False): - if not finish and len(data) % 2 == 1: - data = data[:-1] - return codecs.utf_16_le_decode(data, errors) - - def utf_16_be_decode(data, errors, finish=False): - if not finish and len(data) % 2 == 1: - data = data[:-1] - return codecs.utf_16_be_decode(data, errors) - - def utf_8_decode(data, errors, finish=False): - if not finish: - # We are trying to remove a possible incomplete multibyte character - # from the suffix of the data. - # The first byte of a multi-byte sequence is in the range 0xc0 to 0xfd. - # All further bytes are in the range 0x80 to 0xbf. - # UTF-8 encoded UCS characters may be up to six bytes long. - count = 0 - while count < 5 and count < len(data) \ - and '\x80' <= data[-count-1] <= '\xBF': - count -= 1 - if count < 5 and count < len(data) \ - and '\xC0' <= data[-count-1] <= '\xFD': - data = data[:-count-1] - return codecs.utf_8_decode(data, errors) - -class ReaderError(YAMLError): - - def __init__(self, name, position, character, encoding, reason): - self.name = name - self.character = character - self.position = position - self.encoding = encoding - self.reason = reason - - def __str__(self): - if isinstance(self.character, str): - return "'%s' codec can't decode byte #x%02x: %s\n" \ - " in \"%s\", position %d" \ - % (self.encoding, ord(self.character), self.reason, - self.name, self.position) - else: - return "unacceptable character #x%04x: %s\n" \ - " in \"%s\", position %d" \ - % (ord(self.character), self.reason, - self.name, self.position) - -class Reader: - # Reader: - # - determines the data encoding and converts it to unicode, - # - checks if characters are in allowed range, - # - adds '\0' to the end. - - # Reader accepts - # - a `str` object, - # - a `unicode` object, - # - a file-like object with its `read` method returning `str`, - # - a file-like object with its `read` method returning `unicode`. - - # Yeah, it's ugly and slow. - - def __init__(self, stream): - self.name = None - self.stream = None - self.stream_pointer = 0 - self.eof = True - self.buffer = u'' - self.pointer = 0 - self.raw_buffer = None - self.raw_decode = None - self.encoding = None - self.index = 0 - self.line = 0 - self.column = 0 - if isinstance(stream, unicode): - self.name = "<unicode string>" - self.check_printable(stream) - self.buffer = stream+u'\0' - elif isinstance(stream, str): - self.name = "<string>" - self.raw_buffer = stream - self.determine_encoding() - else: - self.stream = stream - self.name = getattr(stream, 'name', "<file>") - self.eof = False - self.raw_buffer = '' - self.determine_encoding() - - def peek(self, index=0): - if self.pointer+index+1 >= len(self.buffer): - self.update(index+1) - return self.buffer[self.pointer+index] - - def prefix(self, length=1): - if self.pointer+length >= len(self.buffer): - self.update(length) - return self.buffer[self.pointer:self.pointer+length] - - def forward(self, length=1): - if self.pointer+length+1 >= len(self.buffer): - self.update(length+1) - for k in range(length): - ch = self.buffer[self.pointer] - self.pointer += 1 - self.index += 1 - if ch in u'\n\x85\u2028\u2029' \ - or (ch == u'\r' and self.buffer[self.pointer+1] != u'\n'): - self.line += 1 - self.column = 0 - elif ch != u'\uFEFF': - self.column += 1 - - def get_mark(self): - if self.stream is None: - return Mark(self.name, self.index, self.line, self.column, - self.buffer, self.pointer) - else: - return Mark(self.name, self.index, self.line, self.column, - None, None) - - def determine_encoding(self): - while not self.eof and len(self.raw_buffer) < 2: - self.update_raw() - if not isinstance(self.raw_buffer, unicode): - if self.raw_buffer.startswith(codecs.BOM_UTF16_LE): - self.raw_decode = utf_16_le_decode - self.encoding = 'utf-16-le' - elif self.raw_buffer.startswith(codecs.BOM_UTF16_BE): - self.raw_decode = utf_16_be_decode - self.encoding = 'utf-16-be' - else: - self.raw_decode = utf_8_decode - self.encoding = 'utf-8' - self.update(1) - - NON_PRINTABLE = re.compile(u'[^\x09\x0A\x0D\x20-\x7E\x85\xA0-\uD7FF\uE000-\uFFFD]') - def check_printable(self, data): - match = self.NON_PRINTABLE.search(data) - if match: - character = match.group() - position = self.index+(len(self.buffer)-self.pointer)+match.start() - raise ReaderError(self.name, position, character, - 'unicode', "special characters are not allowed") - - def update(self, length): - if self.raw_buffer is None: - return - self.buffer = self.buffer[self.pointer:] - self.pointer = 0 - while len(self.buffer) < length: - if not self.eof: - self.update_raw() - if self.raw_decode is not None: - try: - data, converted = self.raw_decode(self.raw_buffer, - 'strict', self.eof) - except UnicodeDecodeError, exc: - character = exc.object[exc.start] - if self.stream is not None: - position = self.stream_pointer-len(self.raw_buffer)+exc.start - else: - position = exc.start - raise ReaderError(self.name, position, character, - exc.encoding, exc.reason) - else: - data = self.raw_buffer - converted = len(data) - self.check_printable(data) - self.buffer += data - self.raw_buffer = self.raw_buffer[converted:] - if self.eof: - self.buffer += u'\0' - self.raw_buffer = None - break - - def update_raw(self, size=1024): - data = self.stream.read(size) - if data: - self.raw_buffer += data - self.stream_pointer += len(data) - else: - self.eof = True - -#try: -# import psyco -# psyco.bind(Reader) -#except ImportError: -# pass - |