def read_cuesheet_string(cuesheet):
"""given a unicode string of cuesheet data returns a Cuesheet object
raises SheetException if some error occurs parsing the file"""
import audiotools.ply.lex as lex
import audiotools.ply.yacc as yacc
from audiotools.ply.yacc import NullLogger
import audiotools.cue.tokrules
import audiotools.cue.yaccrules
from sys import version_info
str_type = str if (version_info[0] >= 3) else unicode
assert (isinstance(cuesheet, str_type))
lexer = lex.lex(module=audiotools.cue.tokrules)
lexer.input(cuesheet)
parser = yacc.yacc(module=audiotools.cue.yaccrules,
debug=0,
errorlog=NullLogger(),
write_tables=0)
try:
return parser.parse(lexer=lexer)
except ValueError as err:
raise SheetException(str(err))
def read_tocfile(filename):
"""returns a Sheet from a TOC filename on disk
raises TOCException if some error occurs reading or parsing the file
"""
try:
return read_tocfile_string(open(filename, "rb").read())
except IOError:
raise SheetException("unable to open file")
def read_cuesheet(filename):
"""returns a Cuesheet from a cuesheet filename on disk
raises SheetException if some error occurs reading or parsing the file
"""
from audiotools import SheetException
try:
return read_cuesheet_string(open(filename, "rb").read())
except IOError:
raise SheetException("unable to open file")
def read_tocfile_string(tocfile):
"""given a plain string of .toc data, returns a TOCFile object
raises SheetException if some error occurs parsing the file"""
import audiotools.ply.lex as lex
import audiotools.ply.yacc as yacc
from audiotools.ply.yacc import NullLogger
import audiotools.toc.tokrules
import audiotools.toc.yaccrules
lexer = lex.lex(module=audiotools.toc.tokrules)
lexer.input(tocfile)
parser = yacc.yacc(module=audiotools.toc.yaccrules,
debug=0,
errorlog=NullLogger(),
write_tables=0)
try:
return parser.parse(lexer=lexer)
except ValueError as err:
raise SheetException(str(err))
