| [976] | 1 | import re
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| 2 |
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| 3 | import time
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| 4 | import datetime
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| 5 | import pytz
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| 6 |
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| 7 | from ....builtins import *
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| 8 |
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| 9 | from ...exceptions import *
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| 10 | from ...expressions import *
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| 11 | from ...autotype import *
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| 12 | from ...streams import *
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| 13 |
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| 14 | ##
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| 15 | ## nbstlutil -U records begin with the string "Image:" on a line by itself
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| 16 | ##
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| 17 | def stream(stream, format='nbstlutil list -U'):
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| 18 |
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| 19 | if format in ['nbstlutil list -U']:
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| 20 | return LineSeparatorStream(stream, separator='Image:', header=1)
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| 21 | else:
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| 22 | raise ParseError, 'Unknown format %s' % (format)
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| 23 |
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| 24 |
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| 25 | ##
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| 26 | ## Parse a nbstlutil record
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| 27 | ##
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| 28 | def parse(record, format='nbstlutil list -U', version=None, tz=None):
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| 29 |
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| 30 | re_pair = re.compile('^\s*([^:]+):\s*(.*)\s*$')
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| 31 | re_type_id = re.compile('^([0-9a-zA-Z\-_ ]+)\s+\((\d+)\)$')
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| 32 | re_id_type = re.compile('^(\d+)\s+\(([0-9a-zA-Z\-_ ]+)\)$')
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| 33 | re_in_parens = re.compile('^\((.*)\)$')
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| 34 | re_starts_with_time = re.compile('^time_.*$')
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| 35 | re_ends_with_time = re.compile('^.*_time$')
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| 36 | re_time_plus_epoch_seconds_in_parens = re.compile('^.*\d:\d\d:\d\d.*\((\d+)\)$')
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| 37 | re_epoch_seconds_plus_time_in_parens = re.compile('^(\d+)\s+\(.*\d:\d\d:\d\d.*\)$')
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| 38 |
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| 39 | image = ExtendedDict()
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| 40 |
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| 41 | if format == 'nbstlutil list -U':
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| 42 |
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| 43 | header = True
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| 44 |
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| 45 | try:
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| 46 |
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| 47 | i = 0
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| 48 |
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| 49 | #
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| 50 | # process image header
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| 51 | #
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| 52 | while header and i < len(record):
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| 53 |
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| 54 | line = record[i]
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| 55 |
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| 56 | i += 1
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| 57 |
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| 58 | #
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| 59 | # skip blank lines
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| 60 | #
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| 61 | if line == '':
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| 62 | continue
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| 63 |
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| 64 | match = re_pair.match(line)
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| 65 |
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| 66 | key = match.group(1)
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| 67 | value = match.group(2)
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| 68 | key = key.lower()
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| 69 | key = key.rstrip()
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| 70 | key = key.replace('-', '_')
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| 71 | key = key.replace(' ', '_')
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| 72 |
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| 73 | if key == 'copy':
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| 74 | header = False
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| 75 | else:
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| 76 |
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| 77 | #
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| 78 | # convert text values to python datatypes
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| 79 | #
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| 80 | while True:
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| 81 |
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| 82 | #
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| 83 | # key name starts with time_ or ends with _time
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| 84 | #
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| 85 | if re_ends_with_time.match(key) or re_starts_with_time.match(key):
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| 86 |
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| 87 | match = re_epoch_seconds_plus_time_in_parens.match(value)
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| 88 | if match:
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| 89 | value = datetime.datetime.fromtimestamp(float(match.group(1)), tz)
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| 90 | break
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| 91 |
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| 92 | match = re_time_plus_epoch_seconds_in_parens.match(value)
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| 93 | if match:
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| 94 | value = datetime.datetime.fromtimestamp(float(match.group(1)), tz)
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| 95 | break
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| 96 |
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| 97 | #
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| 98 | # separate id and type
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| 99 | #
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| 100 | match = re_id_type.match(value)
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| 101 | if match:
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| 102 | idkey = '%s_id' % (key)
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| 103 | value = match.group(2)
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| 104 | image[idkey] = int(match.group(1))
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| 105 | break
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| 106 |
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| 107 | #
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| 108 | # strip enclosing parens
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| 109 | #
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| 110 | match = re_in_parens.match(value)
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| 111 | if match:
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| 112 | value = match.group(1)
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| 113 | break
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| 114 |
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| 115 | #
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| 116 | # separate type and id
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| 117 | #
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| 118 | match = re_type_id.match(value)
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| 119 | if match:
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| 120 | idkey = '%s_id' % (key)
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| 121 | value = match.group(1)
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| 122 | image[idkey] = int(match.group(2))
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| 123 | break
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| 124 |
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| 125 | #
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| 126 | # ..otherwise autodetect and break if no datatype conversion was possible
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| 127 | #
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| 128 | value = autotype(value)
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| 129 | break
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| 130 |
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| 131 | #
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| 132 | # store value
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| 133 | #
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| 134 | image[key] = value
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| 135 |
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| 136 | #
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| 137 | # parse image copies
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| 138 | #
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| 139 | copies = ExtendedDict()
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| 140 | fragment = False
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| 141 |
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| 142 | while i < len(record):
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| 143 |
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| 144 | line = record[i]
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| 145 |
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| 146 | i += 1
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| 147 |
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| 148 | #
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| 149 | # skip blank lines
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| 150 | #
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| 151 | if line == '':
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| 152 | continue
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| 153 |
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| 154 | match = re_pair.match(line)
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| 155 |
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| 156 | key = match.group(1)
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| 157 | value = match.group(2)
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| 158 | key = key.lower()
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| 159 | key = key.rstrip()
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| 160 | key = key.replace('-', '_')
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| 161 | key = key.replace(' ', '_')
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| 162 |
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| 163 | if key == 'copy':
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| 164 | fragment = False
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| 165 |
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| 166 | if key == 'fragment':
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| 167 | fragment = True
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| 168 | #
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| 169 | # #
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| 170 | # # identify current copy
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| 171 | # #
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| 172 | # if key == 'copy_number':
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| 173 | #
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| 174 | # copy_number = int(value)
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| 175 | #
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| 176 | # if copy_number not in copies:
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| 177 | # copies[copy_number] = ExtendedDict()
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| 178 | # copies[copy_number]['copy_number'] = copy_number
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| 179 | # copies[copy_number]['fragments'] = ExtendedDict()
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| 180 | #
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| 181 | # #
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| 182 | # # identify current fragment
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| 183 | # #
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| 184 | # elif key == 'fragment':
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| 185 | #
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| 186 | # if value == 'TIR (-1)':
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| 187 | # fragment = -1
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| 188 | # elif value == 'TIR (-2)':
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| 189 | # fragment = -2
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| 190 | # else:
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| 191 | # fragment = int(value)
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| 192 | #
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| 193 | # if fragment not in copies[copy_number].fragments:
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| 194 | # copies[copy_number].fragments[fragment] = ExtendedDict()
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| 195 | # copies[copy_number].fragments[fragment]['fragment'] = fragment
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| 196 | #
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| 197 | # #
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| 198 | # # save the key and value using the copy and fragment
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| 199 | # #
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| 200 | # else:
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| 201 | #
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| 202 | # #
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| 203 | # # match timestamp with Unix time in parentheses
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| 204 | # #
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| 205 | # match = re_nbu_datetime.match(line)
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| 206 | # if match:
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| 207 | # value = datetime.datetime.fromtimestamp(float(match.group(1)), tz)
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| 208 | #
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| 209 | # #
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| 210 | # # separate type and id
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| 211 | # #
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| 212 | # elif re_type_id.match(value):
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| 213 | # match = re_type_id.match(value)
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| 214 | # idkey = '%s_id' % (key)
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| 215 | # value = match.group(1)
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| 216 | # copies[copy_number].fragments[fragment][idkey] = int(match.group(2))
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| 217 | #
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| 218 | # #
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| 219 | # # ..otherwise autodetect
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| 220 | # #
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| 221 | # else:
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| 222 | # value = autotype(value)
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| 223 | #
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| 224 | # copies[copy_number].fragments[fragment][key] = value
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| 225 | #
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| 226 | # image['copies'] = copies
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| 227 | #
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| 228 |
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| 229 | return image
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| 230 |
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| 231 | except Exception, e:
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| 232 |
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| 233 | # for line in record:
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| 234 | # print line
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| 235 |
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| 236 | raise ParseError, e
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| 237 |
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| 238 | else:
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| 239 |
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| 240 | raise ParseError, 'Unknown format %s' % (format)
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| 241 |
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