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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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# \subsection{\emph{rio} - simple text metaformat}
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# \emph{r} stands for `restricted', `reproducible', or `rfc822-like'.
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from .iterablefile import IterableFile
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from brzlib import osutils
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from brzlib.iterablefile import IterableFile
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# XXX: some redundancy is allowing to write stanzas in isolation as well as
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# through a writer object.
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class RioWriter(object):
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def __init__(self, to_file):
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self._soft_nl = False
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self._to_file = to_file
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def write_stanza(self, stanza):
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self._to_file.write(b'\n')
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self._to_file.write('\n')
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stanza.write(self._to_file)
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self._soft_nl = True
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"""Append a name and value to the stanza."""
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if not valid_tag(tag):
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raise ValueError("invalid tag %r" % (tag,))
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if isinstance(value, bytes):
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value = value.decode('ascii')
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elif isinstance(value, str):
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if isinstance(value, str):
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value = unicode(value)
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elif isinstance(value, unicode):
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## elif isinstance(value, (int, long)):
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## value = str(value) # XXX: python2.4 without L-suffix
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raise TypeError("invalid type for rio value: %r of type %s"
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% (value, type(value)))
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# max() complains if sequence is empty
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for text_tag, text_value in self.items:
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tag = text_tag.encode('ascii')
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value = text_value.encode('utf-8')
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result.append(tag + b': \n')
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for tag, value in self.items:
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result.append(tag + ': \n')
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# don't want splitlines behaviour on empty lines
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val_lines = value.split(b'\n')
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result.append(tag + b': ' + val_lines[0] + b'\n')
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val_lines = value.split('\n')
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result.append(tag + ': ' + val_lines[0].encode('utf-8') + '\n')
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for line in val_lines[1:]:
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result.append(b'\t' + line + b'\n')
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result.append('\t' + line.encode('utf-8') + '\n')
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result.append(tag + b': ' + value + b'\n')
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result.append(tag + ': ' + value.encode('utf-8') + '\n')
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def to_string(self):
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"""Return stanza as a single string"""
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return b''.join(self.to_lines())
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return ''.join(self.to_lines())
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def to_unicode(self):
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"""Return stanza as a single Unicode string.
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max_rio_width = max_width - 4
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for pline in stanza.to_lines():
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for line in pline.split(b'\n')[:-1]:
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line = re.sub(b'\\\\', b'\\\\\\\\', line)
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for line in pline.split('\n')[:-1]:
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line = re.sub('\\\\', '\\\\\\\\', line)
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while len(line) > 0:
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partline = line[:max_rio_width]
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line = line[max_rio_width:]
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if len(line) > 0 and line[:1] != [b' ']:
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if len(line) > 0 and line[0] != [' ']:
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break_index = partline.rfind(b' ', -20)
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break_index = partline.rfind(' ', -20)
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if break_index < 3:
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break_index = partline.rfind(b'-', -20)
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break_index = partline.rfind('-', -20)
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if break_index < 3:
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break_index = partline.rfind(b'/', -20)
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break_index = partline.rfind('/', -20)
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if break_index >= 3:
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line = partline[break_index:] + line
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partline = partline[:break_index]
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if len(line) > 0:
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partline = re.sub(b'\r', b'\\\\r', partline)
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partline = re.sub('\r', '\\\\r', partline)
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blank_line = False
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if len(line) > 0:
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elif re.search(b' $', partline):
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elif re.search(' $', partline):
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blank_line = True
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lines.append(b'# ' + partline + b'\n')
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lines.append('# ' + partline + '\n')
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lines.append(b'# \n')
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def _patch_stanza_iter(line_iter):
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map = {b'\\\\': b'\\',
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def mapget(match):
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return map[match.group(0)]
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for line in line_iter:
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if line.startswith(b'# '):
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if line.startswith('# '):
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elif line.startswith(b'#'):
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elif line.startswith('#'):
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raise ValueError("bad line %r" % (line,))
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if last_line is not None and len(line) > 2:
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line = re.sub(b'\r', b'', line)
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line = re.sub(b'\\\\(.|\n)', mapget, line)
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line = re.sub('\r', '', line)
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line = re.sub('\\\\(.|\n)', mapget, line)
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if last_line is None:
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last_line += line
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if last_line[-1:] == b'\n':
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if last_line[-1] == '\n':
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if last_line is not None: