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#!BPY
# flt_filewalker.py is an utility module for OpenFlight IO scripts for blender.
# Copyright (C) 2005 Greg MacDonald
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
__bpydoc__ ="""\
File read/write module used by OpenFlight I/O and tool scripts. OpenFlight is a
registered trademark of MultiGen-Paradigm, Inc.
"""
import Blender
from struct import *
import re
class FltIn:
def __init__(self, filename):
self.file = open(filename, 'rb')
self.position = 0
self.next_position = 100000
self.opcode = 0
self.length = 0
self.level = 0
self.repeat = False # Repeat the last record.
def begin_record(self):
if self.repeat == True:
self.repeat = False
else:
self.position += self.length
try:
self.file.seek(self.position)
input = self.file.read(4)
except:
print 'Parse Error!'
return False
if not input:
self.close_file()
return False
self.opcode = unpack('>h', input[:2])[0]
self.length = unpack('>H', input[-2:])[0]
self.next_position = self.position + self.length
return True
def repeat_record(self):
self.repeat = True
def get_opcode(self):
return self.opcode
def get_level(self):
return self.level
def up_level(self):
self.level += 1
def down_level(self):
self.level -= 1
def read_string(self, length):
s = ''
if self.file.tell() + length <= self.next_position:
start = self.file.tell()
for i in xrange(length):
char = self.file.read(1)
if char == '\x00':
break
s = s + char
self.file.seek(start+length)
# else:
# print 'Warning: string truncated'
return s
def read_int(self):
if self.file.tell() + 4 <= self.next_position:
return unpack('>i', self.file.read(4))[0]
else:
#print 'Warning: int truncated'
return 0
def read_uint(self):
if self.file.tell() + 4 <= self.next_position:
return unpack('>I', self.file.read(4))[0]
else:
#print 'Warning: uint truncated'
return 0
def read_double(self):
if self.file.tell() + 8 <= self.next_position:
return unpack('>d', self.file.read(8))[0]
else:
#print 'Warning: double truncated'
return 0.0
def read_float(self):
if self.file.tell() + 4 <= self.next_position:
return unpack('>f', self.file.read(4))[0]
else:
#print 'Warning: float truncated'
return 0.0
def read_ushort(self):
if self.file.tell() + 2 <= self.next_position:
return unpack('>H', self.file.read(2))[0]
else:
#print 'Warning: ushort truncated'
return 0
def read_short(self):
if self.file.tell() + 2 <= self.next_position:
return unpack('>h', self.file.read(2))[0]
else:
#print 'Warning: short trunated'
return 0
def read_uchar(self):
if self.file.tell() + 1 <= self.next_position:
return unpack('>B', self.file.read(1))[0]
else:
#print 'Warning: uchar truncated'
return 0
def read_char(self):
if self.file.tell() + 1 <= self.next_position:
return unpack('>b', self.file.read(1))[0]
else:
#print 'Warning: char truncated'
return 0
def read_ahead(self, i):
if self.file.tell() + i <= self.next_position:
self.file.seek(i, 1)
# else:
# print 'Warning: attempt to seek past record'
def get_length(self):
return self.length
def close_file(self):
self.file.close()
class FltOut:
# Length includes terminating null
def write_string(self, string, length):
if len(string) > length - 1:
str_len = length - 1
else:
str_len = len(string)
pad_len = length - str_len
self.file.write(string[:str_len])
self.pad(pad_len)
def write_int(self, a):
self.file.write( pack('>i', a) )
def write_uint(self, a):
self.file.write( pack('>I', a) )
def write_double(self, a):
self.file.write( pack('>d', a) )
def write_float(self, a):
self.file.write( pack('>f', a) )
def write_ushort(self, a):
self.file.write( pack('>H', a) )
def write_short(self, a):
self.file.write( pack('>h', a) )
def write_uchar(self, a):
self.file.write( pack('>B', a) )
def write_char(self, a):
self.file.write( pack('>b', a) )
def pad(self, reps):
for i in xrange(reps):
self.file.write('\x00')
def close_file(self):
self.file.close()
def __init__(self, filename):
self.file = open(filename, 'wb')
self.filename = filename
class FileFinder:
def add_file_to_search_path(self, filename):
dir = Blender.sys.dirname(filename)
if dir != None and dir != '':
self.search_dirs.append(dir)
def strip_path(self, full_path):
# One of my flt files had a windows path with unix seperation. Basename
# returned the whole path + filename, which isn't expected. So my
# attempt to fix it is to replace all / or \ with the platform specific
# dir seperator.
#
# note: \\\\ is actually just one \ indirected twice, once for python
# then again for re.sub
if Blender.sys.sep == '\\':
full_path = re.sub('/', '\\\\', full_path)
elif Blender.sys.sep == '/':
full_path = re.sub('\\\\', '/', full_path)
filename = Blender.sys.basename(full_path)
return filename
def find(self, full_path):
if full_path == '':
return None
# Seperate out the path.
dirname = Blender.sys.dirname(full_path)
# Try it first.
if Blender.sys.exists(full_path):
if not dirname in self.search_dirs:
self.search_dirs.append(dirname)
return full_path
# Maybe it's relative.
for path in self.search_dirs:
rel_full_path = Blender.sys.join(path, full_path)
if Blender.sys.exists(rel_full_path):
return rel_full_path
# Search previous directories that have worked.
filename = self.strip_path(full_path)
for path in self.search_dirs:
t = Blender.sys.join(path, filename)
if Blender.sys.exists(t):
return t
# Ask user where it is.
self.user_input = Blender.Draw.PupStrInput(filename + "? ", '', 100)
#self.user_input = None
if self.user_input != None:
t = Blender.sys.join(self.user_input, filename)
if Blender.sys.exists(t):
user_dirname = Blender.sys.dirname(t)
if not user_dirname in self.search_dirs:
self.search_dirs.append(user_dirname)
return t
# Couldn't find it.
return None
def __init__(self):
self.user_input = ''
self.current_file = ''
self.search_dirs = []
dir = Blender.Get('texturesdir')
if dir != None and dir != '':
self.search_dirs.append(dir)
dir = Blender.sys.dirname(Blender.Get('filename'))
if dir != None and dir != '':
print dir
self.search_dirs.append(dir)
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