+++ /dev/null
-#!/usr/bin/python
-#
-# Copyright (C) 2010-2012 W. Trevor King <wking@drexel.edu>
-#
-# This file is part of Hooke.
-#
-# Hooke is free software: you can redistribute it and/or modify it under the
-# terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation, either version 3 of the License, or (at your option) any
-# later version.
-#
-# Hooke is distributed in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-# A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License
-# along with Hooke. If not, see <http://www.gnu.org/licenses/>.
-
-"""igorbinarywave provides pure Python interface between IGOR Binary
-Wave files and Numpy arrays.
-
-This is basically a stand-alone package that we bundle into Hooke for
-convenience. It is used by the mfp*d drivers, whose data is saved in
-IBW files.
-"""
-
-# Based on WaveMetric's Technical Note 003, "Igor Binary Format"
-# ftp://ftp.wavemetrics.net/IgorPro/Technical_Notes/TN003.zip
-# From ftp://ftp.wavemetrics.net/IgorPro/Technical_Notes/TN000.txt
-# We place no restrictions on copying Technical Notes, with the
-# exception that you cannot resell them. So read, enjoy, and
-# share. We hope IGOR Technical Notes will provide you with lots of
-# valuable information while you are developing IGOR applications.
-
-import array
-import struct
-import sys
-import types
-
-import numpy
-
-
-__version__ = '0.1'
-
-
-class Field (object):
- """Represent a Structure field.
-
- See Also
- --------
- Structure
- """
- def __init__(self, format, name, default=None, help=None, count=1):
- self.format = format # See the struct documentation
- self.name = name
- self.default = None
- self.help = help
- self.count = count
- self.total_count = numpy.prod(count)
-
-class Structure (struct.Struct):
- """Represent a C structure.
-
- A convenient wrapper around struct.Struct that uses Fields and
- adds dict-handling methods for transparent name assignment.
-
- See Also
- --------
- Field
-
- Examples
- --------
-
- Represent the C structure::
-
- struct thing {
- short version;
- long size[3];
- }
-
- As
-
- >>> from pprint import pprint
- >>> thing = Structure(name='thing',
- ... fields=[Field('h', 'version'), Field('l', 'size', count=3)])
- >>> thing.set_byte_order('>')
- >>> b = array.array('b', range(2+4*3))
- >>> d = thing.unpack_dict_from(buffer=b)
- >>> pprint(d)
- {'size': array([ 33752069, 101124105, 168496141]), 'version': 1}
- >>> [hex(x) for x in d['size']]
- ['0x2030405L', '0x6070809L', '0xa0b0c0dL']
-
- You can even get fancy with multi-dimensional arrays.
-
- >>> thing = Structure(name='thing',
- ... fields=[Field('h', 'version'), Field('l', 'size', count=(3,2))])
- >>> thing.set_byte_order('>')
- >>> b = array.array('b', range(2+4*3*2))
- >>> d = thing.unpack_dict_from(buffer=b)
- >>> d['size'].shape
- (3, 2)
- >>> pprint(d)
- {'size': array([[ 33752069, 101124105],
- [168496141, 235868177],
- [303240213, 370612249]]),
- 'version': 1}
- """
- def __init__(self, name, fields, byte_order='='):
- # '=' for native byte order, standard size and alignment
- # See http://docs.python.org/library/struct for details
- self.name = name
- self.fields = fields
- self.set_byte_order(byte_order)
-
- def __str__(self):
- return self.name
-
- def set_byte_order(self, byte_order):
- """Allow changing the format byte_order on the fly.
- """
- if (hasattr(self, 'format') and self.format != None
- and self.format.startswith(byte_order)):
- return # no need to change anything
- format = []
- for field in self.fields:
- format.extend([field.format]*field.total_count)
- struct.Struct.__init__(self, format=byte_order+''.join(format).replace('P', 'L'))
-
- def _flatten_args(self, args):
- # handle Field.count > 0
- flat_args = []
- for a,f in zip(args, self.fields):
- if f.total_count > 1:
- flat_args.extend(a)
- else:
- flat_args.append(a)
- return flat_args
-
- def _unflatten_args(self, args):
- # handle Field.count > 0
- unflat_args = []
- i = 0
- for f in self.fields:
- if f.total_count > 1:
- data = numpy.array(args[i:i+f.total_count])
- data = data.reshape(f.count)
- unflat_args.append(data)
- else:
- unflat_args.append(args[i])
- i += f.total_count
- return unflat_args
-
- def pack(self, *args):
- return struct.Struct.pack(self, *self._flatten_args(args))
-
- def pack_into(self, buffer, offset, *args):
- return struct.Struct.pack_into(self, buffer, offset,
- *self._flatten_args(args))
-
- def _clean_dict(self, dict):
- for f in self.fields:
- if f.name not in dict:
- if f.default != None:
- dict[f.name] = f.default
- else:
- raise ValueError('%s field not set for %s'
- % f.name, self.__class__.__name__)
- return dict
-
- def pack_dict(self, dict):
- dict = self._clean_dict(dict)
- return self.pack(*[dict[f.name] for f in self.fields])
-
- def pack_dict_into(self, buffer, offset, dict={}):
- dict = self._clean_dict(dict)
- return self.pack_into(buffer, offset,
- *[dict[f.name] for f in self.fields])
-
- def unpack(self, string):
- return self._unflatten_args(struct.Struct.unpack(self, string))
-
- def unpack_from(self, buffer, offset=0):
- return self._unflatten_args(
- struct.Struct.unpack_from(self, buffer, offset))
-
- def unpack_dict(self, string):
- return dict(zip([f.name for f in self.fields],
- self.unpack(string)))
-
- def unpack_dict_from(self, buffer, offset=0):
- return dict(zip([f.name for f in self.fields],
- self.unpack_from(buffer, offset)))
-
-
-# Numpy doesn't support complex integers by default, see
-# http://mail.python.org/pipermail/python-dev/2002-April/022408.html
-# http://mail.scipy.org/pipermail/numpy-discussion/2007-October/029447.html
-# So we roll our own types. See
-# http://docs.scipy.org/doc/numpy/user/basics.rec.html
-# http://docs.scipy.org/doc/numpy/reference/generated/numpy.dtype.html
-complexInt8 = numpy.dtype([('real', numpy.int8), ('imag', numpy.int8)])
-complexInt16 = numpy.dtype([('real', numpy.int16), ('imag', numpy.int16)])
-complexInt32 = numpy.dtype([('real', numpy.int32), ('imag', numpy.int32)])
-complexUInt8 = numpy.dtype([('real', numpy.uint8), ('imag', numpy.uint8)])
-complexUInt16 = numpy.dtype([('real', numpy.uint16), ('imag', numpy.uint16)])
-complexUInt32 = numpy.dtype([('real', numpy.uint32), ('imag', numpy.uint32)])
-
-
-# Begin IGOR constants and typedefs from IgorBin.h
-
-# From IgorMath.h
-TYPE_TABLE = { # (key: integer flag, value: numpy dtype)
- 0:None, # Text wave, not handled in ReadWave.c
- 1:numpy.complex, # NT_CMPLX, makes number complex.
- 2:numpy.float32, # NT_FP32, 32 bit fp numbers.
- 3:numpy.complex64,
- 4:numpy.float64, # NT_FP64, 64 bit fp numbers.
- 5:numpy.complex128,
- 8:numpy.int8, # NT_I8, 8 bit signed integer. Requires Igor Pro
- # 2.0 or later.
- 9:complexInt8,
- 0x10:numpy.int16,# NT_I16, 16 bit integer numbers. Requires Igor
- # Pro 2.0 or later.
- 0x11:complexInt16,
- 0x20:numpy.int32,# NT_I32, 32 bit integer numbers. Requires Igor
- # Pro 2.0 or later.
- 0x21:complexInt32,
-# 0x40:None, # NT_UNSIGNED, Makes above signed integers
-# # unsigned. Requires Igor Pro 3.0 or later.
- 0x48:numpy.uint8,
- 0x49:complexUInt8,
- 0x50:numpy.uint16,
- 0x51:complexUInt16,
- 0x60:numpy.uint32,
- 0x61:complexUInt32,
-}
-
-# From wave.h
-MAXDIMS = 4
-
-# From binary.h
-BinHeaderCommon = Structure( # WTK: this one is mine.
- name='BinHeaderCommon',
- fields=[
- Field('h', 'version', help='Version number for backwards compatibility.'),
- ])
-
-BinHeader1 = Structure(
- name='BinHeader1',
- fields=[
- Field('h', 'version', help='Version number for backwards compatibility.'),
- Field('l', 'wfmSize', help='The size of the WaveHeader2 data structure plus the wave data plus 16 bytes of padding.'),
- Field('h', 'checksum', help='Checksum over this header and the wave header.'),
- ])
-
-BinHeader2 = Structure(
- name='BinHeader2',
- fields=[
- Field('h', 'version', help='Version number for backwards compatibility.'),
- Field('l', 'wfmSize', help='The size of the WaveHeader2 data structure plus the wave data plus 16 bytes of padding.'),
- Field('l', 'noteSize', help='The size of the note text.'),
- Field('l', 'pictSize', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('h', 'checksum', help='Checksum over this header and the wave header.'),
- ])
-
-BinHeader3 = Structure(
- name='BinHeader3',
- fields=[
- Field('h', 'version', help='Version number for backwards compatibility.'),
- Field('h', 'wfmSize', help='The size of the WaveHeader2 data structure plus the wave data plus 16 bytes of padding.'),
- Field('l', 'noteSize', help='The size of the note text.'),
- Field('l', 'formulaSize', help='The size of the dependency formula, if any.'),
- Field('l', 'pictSize', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('h', 'checksum', help='Checksum over this header and the wave header.'),
- ])
-
-BinHeader5 = Structure(
- name='BinHeader5',
- fields=[
- Field('h', 'version', help='Version number for backwards compatibility.'),
- Field('h', 'checksum', help='Checksum over this header and the wave header.'),
- Field('l', 'wfmSize', help='The size of the WaveHeader5 data structure plus the wave data.'),
- Field('l', 'formulaSize', help='The size of the dependency formula, if any.'),
- Field('l', 'noteSize', help='The size of the note text.'),
- Field('l', 'dataEUnitsSize', help='The size of optional extended data units.'),
- Field('l', 'dimEUnitsSize', help='The size of optional extended dimension units.', count=MAXDIMS),
- Field('l', 'dimLabelsSize', help='The size of optional dimension labels.', count=MAXDIMS),
- Field('l', 'sIndicesSize', help='The size of string indicies if this is a text wave.'),
- Field('l', 'optionsSize1', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('l', 'optionsSize2', default=0, help='Reserved. Write zero. Ignore on read.'),
- ])
-
-
-# From wave.h
-MAX_WAVE_NAME2 = 18 # Maximum length of wave name in version 1 and 2
- # files. Does not include the trailing null.
-MAX_WAVE_NAME5 = 31 # Maximum length of wave name in version 5
- # files. Does not include the trailing null.
-MAX_UNIT_CHARS = 3
-
-# Header to an array of waveform data.
-
-WaveHeader2 = Structure(
- name='WaveHeader2',
- fields=[
- Field('h', 'type', help='See types (e.g. NT_FP64) above. Zero for text waves.'),
- Field('P', 'next', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('c', 'bname', help='Name of wave plus trailing null.', count=MAX_WAVE_NAME2+2),
- Field('h', 'whVersion', default=0, help='Write 0. Ignore on read.'),
- Field('h', 'srcFldr', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('P', 'fileName', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('c', 'dataUnits', default=0, help='Natural data units go here - null if none.', count=MAX_UNIT_CHARS+1),
- Field('c', 'xUnits', default=0, help='Natural x-axis units go here - null if none.', count=MAX_UNIT_CHARS+1),
- Field('l', 'npnts', help='Number of data points in wave.'),
- Field('h', 'aModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('d', 'hsA', help='X value for point p = hsA*p + hsB'),
- Field('d', 'hsB', help='X value for point p = hsA*p + hsB'),
- Field('h', 'wModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('h', 'swModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('h', 'fsValid', help='True if full scale values have meaning.'),
- Field('d', 'topFullScale', help='The min full scale value for wave.'), # sic, 'min' should probably be 'max'
- Field('d', 'botFullScale', help='The min full scale value for wave.'),
- Field('c', 'useBits', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('c', 'kindBits', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('P', 'formula', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('l', 'depID', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('L', 'creationDate', help='DateTime of creation. Not used in version 1 files.'),
- Field('c', 'wUnused', default=0, help='Reserved. Write zero. Ignore on read.', count=2),
- Field('L', 'modDate', help='DateTime of last modification.'),
- Field('P', 'waveNoteH', help='Used in memory only. Write zero. Ignore on read.'),
- Field('f', 'wData', help='The start of the array of waveform data.', count=4),
- ])
-
-WaveHeader5 = Structure(
- name='WaveHeader5',
- fields=[
- Field('P', 'next', help='link to next wave in linked list.'),
- Field('L', 'creationDate', help='DateTime of creation.'),
- Field('L', 'modDate', help='DateTime of last modification.'),
- Field('l', 'npnts', help='Total number of points (multiply dimensions up to first zero).'),
- Field('h', 'type', help='See types (e.g. NT_FP64) above. Zero for text waves.'),
- Field('h', 'dLock', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('c', 'whpad1', default=0, help='Reserved. Write zero. Ignore on read.', count=6),
- Field('h', 'whVersion', default=1, help='Write 1. Ignore on read.'),
- Field('c', 'bname', help='Name of wave plus trailing null.', count=MAX_WAVE_NAME5+1),
- Field('l', 'whpad2', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('P', 'dFolder', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- # Dimensioning info. [0] == rows, [1] == cols etc
- Field('l', 'nDim', help='Number of of items in a dimension -- 0 means no data.', count=MAXDIMS),
- Field('d', 'sfA', help='Index value for element e of dimension d = sfA[d]*e + sfB[d].', count=MAXDIMS),
- Field('d', 'sfB', help='Index value for element e of dimension d = sfA[d]*e + sfB[d].', count=MAXDIMS),
- # SI units
- Field('c', 'dataUnits', default=0, help='Natural data units go here - null if none.', count=MAX_UNIT_CHARS+1),
- Field('c', 'dimUnits', default=0, help='Natural dimension units go here - null if none.', count=(MAXDIMS, MAX_UNIT_CHARS+1)),
- Field('h', 'fsValid', help='TRUE if full scale values have meaning.'),
- Field('h', 'whpad3', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('d', 'topFullScale', help='The max and max full scale value for wave'), # sic, probably "max and min"
- Field('d', 'botFullScale', help='The max and max full scale value for wave.'), # sic, probably "max and min"
- Field('P', 'dataEUnits', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('P', 'dimEUnits', default=0, help='Used in memory only. Write zero. Ignore on read.', count=MAXDIMS),
- Field('P', 'dimLabels', default=0, help='Used in memory only. Write zero. Ignore on read.', count=MAXDIMS),
- Field('P', 'waveNoteH', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('l', 'whUnused', default=0, help='Reserved. Write zero. Ignore on read.', count=16),
- # The following stuff is considered private to Igor.
- Field('h', 'aModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('h', 'wModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('h', 'swModified', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('c', 'useBits', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('c', 'kindBits', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('P', 'formula', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('l', 'depID', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('h', 'whpad4', default=0, help='Reserved. Write zero. Ignore on read.'),
- Field('h', 'srcFldr', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('P', 'fileName', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('P', 'sIndices', default=0, help='Used in memory only. Write zero. Ignore on read.'),
- Field('f', 'wData', help='The start of the array of data. Must be 64 bit aligned.', count=1),
- ])
-
-# End IGOR constants and typedefs from IgorBin.h
-
-# Begin functions from ReadWave.c
-
-def need_to_reorder_bytes(version):
- # If the low order byte of the version field of the BinHeader
- # structure is zero then the file is from a platform that uses
- # different byte-ordering and therefore all data will need to be
- # reordered.
- return version & 0xFF == 0
-
-def byte_order(needToReorderBytes):
- little_endian = sys.byteorder == 'little'
- if needToReorderBytes:
- little_endian = not little_endian
- if little_endian:
- return '<' # little-endian
- return '>' # big-endian
-
-def version_structs(version, byte_order):
- if version == 1:
- bin = BinHeader1
- wave = WaveHeader2
- elif version == 2:
- bin = BinHeader2
- wave = WaveHeader2
- elif version == 3:
- bin = BinHeader3
- wave = WaveHeader2
- elif version == 5:
- bin = BinHeader5
- wave = WaveHeader5
- else:
- raise ValueError('This does not appear to be a valid Igor binary wave file. The version field = %d.\n', version);
- checkSumSize = bin.size + wave.size
- if version == 5:
- checkSumSize -= 4 # Version 5 checksum does not include the wData field.
- bin.set_byte_order(byte_order)
- wave.set_byte_order(byte_order)
- return (bin, wave, checkSumSize)
-
-def checksum(buffer, byte_order, oldcksum, numbytes):
- x = numpy.ndarray(
- (numbytes/2,), # 2 bytes to a short -- ignore trailing odd byte
- dtype=numpy.dtype(byte_order+'h'),
- buffer=buffer)
- oldcksum += x.sum()
- if oldcksum > 2**31: # fake the C implementation's int rollover
- oldcksum %= 2**32
- if oldcksum > 2**31:
- oldcksum -= 2**31
- return oldcksum & 0xffff
-
-# Translated from ReadWave()
-def loadibw(filename, strict=True):
- if hasattr(filename, 'read'):
- f = filename # filename is actually a stream object
- else:
- f = open(filename, 'rb')
- try:
- b = buffer(f.read(BinHeaderCommon.size))
- version = BinHeaderCommon.unpack_dict_from(b)['version']
- needToReorderBytes = need_to_reorder_bytes(version)
- byteOrder = byte_order(needToReorderBytes)
-
- if needToReorderBytes:
- BinHeaderCommon.set_byte_order(byteOrder)
- version = BinHeaderCommon.unpack_dict_from(b)['version']
- bin_struct,wave_struct,checkSumSize = version_structs(version, byteOrder)
-
- b = buffer(b + f.read(bin_struct.size + wave_struct.size - BinHeaderCommon.size))
- c = checksum(b, byteOrder, 0, checkSumSize)
- if c != 0:
- raise ValueError('Error in checksum - should be 0, is %d. This does not appear to be a valid Igor binary wave file.' % c)
- bin_info = bin_struct.unpack_dict_from(b)
- wave_info = wave_struct.unpack_dict_from(b, offset=bin_struct.size)
- if wave_info['type'] == 0:
- raise NotImplementedError('Text wave')
- if version in [1,2,3]:
- tail = 16 # 16 = size of wData field in WaveHeader2 structure
- waveDataSize = bin_info['wfmSize'] - wave_struct.size
- # = bin_info['wfmSize']-16 - (wave_struct.size - tail)
- else:
- assert version == 5, version
- tail = 4 # 4 = size of wData field in WaveHeader5 structure
- waveDataSize = bin_info['wfmSize'] - (wave_struct.size - tail)
- # dtype() wrapping to avoid numpy.generic and
- # getset_descriptor issues with the builtin Numpy types
- # (e.g. int32). It has no effect on our local complex
- # integers.
- t = numpy.dtype(TYPE_TABLE[wave_info['type']])
- assert waveDataSize == wave_info['npnts'] * t.itemsize, \
- ('%d, %d, %d, %s' % (waveDataSize, wave_info['npnts'], t.itemsize, t))
- tail_data = array.array('f', b[-tail:])
- data_b = buffer(buffer(tail_data) + f.read(waveDataSize-tail))
- if version == 5:
- shape = [n for n in wave_info['nDim'] if n > 0]
- else:
- shape = (wave_info['npnts'],)
- data = numpy.ndarray(
- shape=shape,
- dtype=t.newbyteorder(byteOrder),
- buffer=data_b,
- order='F',
- )
-
- if version == 1:
- pass # No post-data information
- elif version == 2:
- # Post-data info:
- # * 16 bytes of padding
- # * Optional wave note data
- pad_b = buffer(f.read(16)) # skip the padding
- if max(pad_b) != 0:
- if strict:
- assert max(pad_b) == 0, pad_b
- else:
- print sys.stderr, 'warning: post-data padding not zero: %s.' % pad_b
- bin_info['note'] = str(f.read(bin_info['noteSize'])).strip()
- elif version == 3:
- # Post-data info:
- # * 16 bytes of padding
- # * Optional wave note data
- # * Optional wave dependency formula
- """Excerpted from TN003:
-
- A wave has a dependency formula if it has been bound by a
- statement such as "wave0 := sin(x)". In this example, the
- dependency formula is "sin(x)". The formula is stored with
- no trailing null byte.
- """
- pad_b = buffer(f.read(16)) # skip the padding
- if max(pad_b) != 0:
- if strict:
- assert max(pad_b) == 0, pad_b
- else:
- print sys.stderr, 'warning: post-data padding not zero: %s.' % pad_b
- bin_info['note'] = str(f.read(bin_info['noteSize'])).strip()
- bin_info['formula'] = str(f.read(bin_info['formulaSize'])).strip()
- elif version == 5:
- # Post-data info:
- # * Optional wave dependency formula
- # * Optional wave note data
- # * Optional extended data units data
- # * Optional extended dimension units data
- # * Optional dimension label data
- # * String indices used for text waves only
- """Excerpted from TN003:
-
- dataUnits - Present in versions 1, 2, 3, 5. The dataUnits
- field stores the units for the data represented by the
- wave. It is a C string terminated with a null
- character. This field supports units of 0 to 3 bytes. In
- version 1, 2 and 3 files, longer units can not be
- represented. In version 5 files, longer units can be
- stored using the optional extended data units section of
- the file.
-
- xUnits - Present in versions 1, 2, 3. The xUnits field
- stores the X units for a wave. It is a C string
- terminated with a null character. This field supports
- units of 0 to 3 bytes. In version 1, 2 and 3 files,
- longer units can not be represented.
-
- dimUnits - Present in version 5 only. This field is an
- array of 4 strings, one for each possible wave
- dimension. Each string supports units of 0 to 3
- bytes. Longer units can be stored using the optional
- extended dimension units section of the file.
- """
- bin_info['formula'] = str(f.read(bin_info['formulaSize'])).strip()
- bin_info['note'] = str(f.read(bin_info['noteSize'])).strip()
- bin_info['dataEUnits'] = str(f.read(bin_info['dataEUnitsSize'])).strip()
- bin_info['dimEUnits'] = [
- str(f.read(size)).strip() for size in bin_info['dimEUnitsSize']]
- bin_info['dimLabels'] = []
- for size in bin_info['dimLabelsSize']:
- labels = str(f.read(size)).split(chr(0)) # split null-delimited strings
- bin_info['dimLabels'].append([L for L in labels if len(L) > 0])
- if wave_info['type'] == 0: # text wave
- bin_info['sIndices'] = f.read(bin_info['sIndicesSize'])
-
- finally:
- if not hasattr(filename, 'read'):
- f.close()
-
- return data, bin_info, wave_info
-
-
-def saveibw(filename):
- raise NotImplementedError
-
-
-if __name__ == '__main__':
- """IBW -> ASCII conversion
- """
- import optparse
- import sys
-
- p = optparse.OptionParser(version=__version__)
-
- p.add_option('-f', '--infile', dest='infile', metavar='FILE',
- default='-', help='Input IGOR Binary Wave (.ibw) file.')
- p.add_option('-o', '--outfile', dest='outfile', metavar='FILE',
- default='-', help='File for ASCII output.')
- p.add_option('-v', '--verbose', dest='verbose', default=0,
- action='count', help='Increment verbosity')
- p.add_option('-n', '--not-strict', dest='strict', default=True,
- action='store_false', help='Attempt to parse invalid IBW files.')
- p.add_option('-t', '--test', dest='test', default=False,
- action='store_true', help='Run internal tests and exit.')
-
- options,args = p.parse_args()
-
- if options.test == True:
- import doctest
- num_failures,num_tests = doctest.testmod(verbose=options.verbose)
- sys.exit(min(num_failures, 127))
-
- if len(args) > 0 and options.infile == None:
- options.infile = args[0]
- if options.infile == '-':
- options.infile = sys.stdin
- if options.outfile == '-':
- options.outfile = sys.stdout
-
- data,bin_info,wave_info = loadibw(options.infile, strict=options.strict)
- numpy.savetxt(options.outfile, data, fmt='%g', delimiter='\t')
- if options.verbose > 0:
- import pprint
- pprint.pprint(bin_info)
- pprint.pprint(wave_info)
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