/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_JointState.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/JointState.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct
import std_msgs.msg
class JointState(genpy.Message):
_md5sum = "3066dcd76a6cfaef579bd0f34173e9fd"
_type = "sensor_msgs/JointState"
_has_header = True #flag to mark the presence of a Header object
_full_text = """# This is a message that holds data to describe the state of a set of torque controlled joints.
#
# The state of each joint (revolute or prismatic) is defined by:
# * the position of the joint (rad or m),
# * the velocity of the joint (rad/s or m/s) and
# * the effort that is applied in the joint (Nm or N).
#
# Each joint is uniquely identified by its name
# The header specifies the time at which the joint states were recorded. All the joint states
# in one message have to be recorded at the same time.
#
# This message consists of a multiple arrays, one for each part of the joint state.
# The goal is to make each of the fields optional. When e.g. your joints have no
# effort associated with them, you can leave the effort array empty.
#
# All arrays in this message should have the same size, or be empty.
# This is the only way to uniquely associate the joint name with the correct
# states.
Header header
string[] name
float64[] position
float64[] velocity
float64[] effort
================================================================================
MSG: std_msgs/Header
# Standard metadata for higher-level stamped data types.
# This is generally used to communicate timestamped data
# in a particular coordinate frame.
#
# sequence ID: consecutively increasing ID
uint32 seq
#Two-integer timestamp that is expressed as:
# * stamp.sec: seconds (stamp_secs) since epoch (in Python the variable is called 'secs')
# * stamp.nsec: nanoseconds since stamp_secs (in Python the variable is called 'nsecs')
# time-handling sugar is provided by the client library
time stamp
#Frame this data is associated with
# 0: no frame
# 1: global frame
string frame_id
"""
__slots__ = ['header','name','position','velocity','effort']
_slot_types = ['std_msgs/Header','string[]','float64[]','float64[]','float64[]']
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:
header,name,position,velocity,effort
: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(JointState, self).__init__(*args, **kwds)
#message fields cannot be None, assign default values for those that are
if self.header is None:
self.header = std_msgs.msg.Header()
if self.name is None:
self.name = []
if self.position is None:
self.position = []
if self.velocity is None:
self.velocity = []
if self.effort is None:
self.effort = []
else:
self.header = std_msgs.msg.Header()
self.name = []
self.position = []
self.velocity = []
self.effort = []
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
buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
_x = self.header.frame_id
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.name)
buff.write(_struct_I.pack(length))
for val1 in self.name:
length = len(val1)
if python3 or type(val1) == unicode:
val1 = val1.encode('utf-8')
length = len(val1)
buff.write(struct.pack('<I%ss'%length, length, val1))
length = len(self.position)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(struct.pack(pattern, *self.position))
length = len(self.velocity)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(struct.pack(pattern, *self.velocity))
length = len(self.effort)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(struct.pack(pattern, *self.effort))
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:
if self.header is None:
self.header = std_msgs.msg.Header()
end = 0
_x = self
start = end
end += 12
(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
self.header.frame_id = str[start:end].decode('utf-8')
else:
self.header.frame_id = str[start:end]
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
self.name = []
for i in range(0, length):
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
val1 = str[start:end].decode('utf-8')
else:
val1 = str[start:end]
self.name.append(val1)
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.position = struct.unpack(pattern, str[start:end])
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.velocity = struct.unpack(pattern, str[start:end])
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.effort = 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
buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
_x = self.header.frame_id
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.name)
buff.write(_struct_I.pack(length))
for val1 in self.name:
length = len(val1)
if python3 or type(val1) == unicode:
val1 = val1.encode('utf-8')
length = len(val1)
buff.write(struct.pack('<I%ss'%length, length, val1))
length = len(self.position)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(self.position.tostring())
length = len(self.velocity)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(self.velocity.tostring())
length = len(self.effort)
buff.write(_struct_I.pack(length))
pattern = '<%sd'%length
buff.write(self.effort.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:
if self.header is None:
self.header = std_msgs.msg.Header()
end = 0
_x = self
start = end
end += 12
(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
self.header.frame_id = str[start:end].decode('utf-8')
else:
self.header.frame_id = str[start:end]
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
self.name = []
for i in range(0, length):
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
start = end
end += length
if python3:
val1 = str[start:end].decode('utf-8')
else:
val1 = str[start:end]
self.name.append(val1)
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.position = numpy.frombuffer(str[start:end], dtype=numpy.float64, count=length)
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.velocity = numpy.frombuffer(str[start:end], dtype=numpy.float64, count=length)
start = end
end += 4
(length,) = _struct_I.unpack(str[start:end])
pattern = '<%sd'%length
start = end
end += struct.calcsize(pattern)
self.effort = numpy.frombuffer(str[start:end], dtype=numpy.float64, 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
_struct_3I = None
def _get_struct_3I():
global _struct_3I
if _struct_3I is None:
_struct_3I = struct.Struct("<3I")
return _struct_3I
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