/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_ChannelFloat32.py is in python-sensor-msgs 1.12.5-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""autogenerated by genpy from sensor_msgs/ChannelFloat32.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct
class ChannelFloat32(genpy.Message):
_md5sum = "3d40139cdd33dfedcb71ffeeeb42ae7f"
_type = "sensor_msgs/ChannelFloat32"
_has_header = False #flag to mark the presence of a Header object
_full_text = """# This message is used by the PointCloud message to hold optional data
# associated with each point in the cloud. The length of the values
# array should be the same as the length of the points array in the
# PointCloud, and each value should be associated with the corresponding
# point.
# Channel names in existing practice include:
# "u", "v" - row and column (respectively) in the left stereo image.
# This is opposite to usual conventions but remains for
# historical reasons. The newer PointCloud2 message has no
# such problem.
# "rgb" - For point clouds produced by color stereo cameras. uint8
# (R,G,B) values packed into the least significant 24 bits,
# in order.
# "intensity" - laser or pixel intensity.
# "distance"
# The channel name should give semantics of the channel (e.g.
# "intensity" instead of "value").
string name
# The values array should be 1-1 with the elements of the associated
# PointCloud.
float32[] values
"""
__slots__ = ['name','values']
_slot_types = ['string','float32[]']
def __init__(self, *args, **kwds):
"""
Constructor. Any message fields that are implicitly/explicitly
set to None will be assigned a default value. The recommend
use is keyword arguments as this is more robust to future message
changes. You cannot mix in-order arguments and keyword arguments.
The available fields are:
name,values
:param args: complete set of field values, in .msg order
:param kwds: use keyword arguments corresponding to message field names
to set specific fields.
"""
if args or kwds:
super(ChannelFloat32, self).__init__(*args, **kwds)
#message fields cannot be None, assign default values for those that are
if self.name is None:
self.name = ''
if self.values is None:
self.values = []
else:
self.name = ''
self.values = []
def _get_types(self):
"""
internal API method
"""
return self._slot_types
def serialize(self, buff):
"""
serialize message into buffer
:param buff: buffer, ``StringIO``
"""
try:
_x = self.name
length = len(_x)
if python3 or type(_x) == unicode:
_x = _x.encode('utf-8')
length = len(_x)
buff.write(struct.pack('<I%ss'%length, length, _x))
length = len(self.values)
buff.write(_struct_I.pack(length))
pattern = '<%sf'%length
buff.write(struct.pack(pattern, *self.values))
except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))
def deserialize(self, str):
"""
unpack serialized message in str into this message instance
:param str: byte array of serialized message, ``str``
"""
try:
end = 0
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
self.name = str[start:end].decode('utf-8')
else:
self.name = str[start:end]
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sf'%length
start = end
end += struct.calcsize(pattern)
self.values = struct.unpack(pattern, str[start:end])
return self
except struct.error as e:
raise genpy.DeserializationError(e) #most likely buffer underfill
def serialize_numpy(self, buff, numpy):
"""
serialize message with numpy array types into buffer
:param buff: buffer, ``StringIO``
:param numpy: numpy python module
"""
try:
_x = self.name
length = len(_x)
if python3 or type(_x) == unicode:
_x = _x.encode('utf-8')
length = len(_x)
buff.write(struct.pack('<I%ss'%length, length, _x))
length = len(self.values)
buff.write(_struct_I.pack(length))
pattern = '<%sf'%length
buff.write(self.values.tostring())
except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))
def deserialize_numpy(self, str, numpy):
"""
unpack serialized message in str into this message instance using numpy for array types
:param str: byte array of serialized message, ``str``
:param numpy: numpy python module
"""
try:
end = 0
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
self.name = str[start:end].decode('utf-8')
else:
self.name = str[start:end]
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sf'%length
start = end
end += struct.calcsize(pattern)
self.values = numpy.frombuffer(str[start:end], dtype=numpy.float32, count=length)
return self
except struct.error as e:
raise genpy.DeserializationError(e) #most likely buffer underfill
_struct_I = genpy.struct_I
def _get_struct_I():
global _struct_I
return _struct_I
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