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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)
-