1991-12-11 17:29:59 +00:00
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#
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# flp - Module to load fl forms from fd files
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#
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# Jack Jansen, December 1991
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#
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import string
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1992-03-31 19:04:48 +00:00
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import os
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1991-12-11 17:29:59 +00:00
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import sys
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import FL
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SPLITLINE = '--------------------'
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FORMLINE = '=============== FORM ==============='
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ENDLINE = '=============================='
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error = 'flp.error'
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##################################################################
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# Part 1 - The parsing routines #
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##################################################################
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#
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# Externally visible function. Load form.
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#
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def parse_form(filename, formname):
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1992-02-19 14:50:10 +00:00
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forms = checkcache(filename)
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1994-08-23 13:29:21 +00:00
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if forms is None:
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forms = parse_forms(filename)
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if forms.has_key(formname):
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return forms[formname]
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1992-02-19 14:50:10 +00:00
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else:
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raise error, 'No such form in fd file'
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1991-12-11 17:29:59 +00:00
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#
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# Externally visible function. Load all forms.
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#
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def parse_forms(filename):
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1992-02-19 14:50:10 +00:00
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forms = checkcache(filename)
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if forms != None: return forms
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1991-12-11 17:29:59 +00:00
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fp = _open_formfile(filename)
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nforms = _parse_fd_header(fp)
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forms = {}
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for i in range(nforms):
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form = _parse_fd_form(fp, None)
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forms[form[0].Name] = form
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1992-02-19 14:50:10 +00:00
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writecache(filename, forms)
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1991-12-11 17:29:59 +00:00
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return forms
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1992-02-19 14:50:10 +00:00
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#
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# Internal: see if a cached version of the file exists
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#
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MAGIC = '.fdc'
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1993-05-24 14:16:22 +00:00
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_internal_cache = {} # Used by frozen scripts only
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1992-02-19 14:50:10 +00:00
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def checkcache(filename):
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1993-05-24 14:16:22 +00:00
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if _internal_cache.has_key(filename):
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altforms = _internal_cache[filename]
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return _unpack_cache(altforms)
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1992-02-19 14:50:10 +00:00
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import marshal
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fp, filename = _open_formfile2(filename)
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fp.close()
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cachename = filename + 'c'
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try:
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fp = open(cachename, 'r')
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except IOError:
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1992-03-25 14:53:05 +00:00
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#print 'flp: no cache file', cachename
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1992-02-19 14:50:10 +00:00
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return None
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try:
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if fp.read(4) != MAGIC:
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print 'flp: bad magic word in cache file', cachename
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return None
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cache_mtime = rdlong(fp)
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file_mtime = getmtime(filename)
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if cache_mtime != file_mtime:
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1992-03-25 14:53:05 +00:00
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#print 'flp: outdated cache file', cachename
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1992-02-19 14:50:10 +00:00
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return None
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1992-03-25 14:53:05 +00:00
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#print 'flp: valid cache file', cachename
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1992-02-19 14:50:10 +00:00
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altforms = marshal.load(fp)
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1993-05-24 14:16:22 +00:00
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return _unpack_cache(altforms)
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finally:
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fp.close()
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def _unpack_cache(altforms):
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1992-02-19 14:50:10 +00:00
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forms = {}
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for name in altforms.keys():
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altobj, altlist = altforms[name]
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1993-12-17 15:25:27 +00:00
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obj = _newobj()
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1992-02-19 14:50:10 +00:00
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obj.make(altobj)
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list = []
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for altobj in altlist:
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1993-12-17 15:25:27 +00:00
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nobj = _newobj()
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1992-02-19 14:50:10 +00:00
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nobj.make(altobj)
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list.append(nobj)
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forms[name] = obj, list
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return forms
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def rdlong(fp):
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s = fp.read(4)
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if len(s) != 4: return None
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a, b, c, d = s[0], s[1], s[2], s[3]
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return ord(a)<<24 | ord(b)<<16 | ord(c)<<8 | ord(d)
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def wrlong(fp, x):
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a, b, c, d = (x>>24)&0xff, (x>>16)&0xff, (x>>8)&0xff, x&0xff
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fp.write(chr(a) + chr(b) + chr(c) + chr(d))
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def getmtime(filename):
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1992-03-31 19:04:48 +00:00
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import os
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1992-02-19 14:50:10 +00:00
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from stat import ST_MTIME
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try:
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1992-03-31 19:04:48 +00:00
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return os.stat(filename)[ST_MTIME]
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except os.error:
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1992-02-19 14:50:10 +00:00
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return None
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#
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# Internal: write cached version of the form (parsing is too slow!)
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#
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def writecache(filename, forms):
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import marshal
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fp, filename = _open_formfile2(filename)
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fp.close()
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cachename = filename + 'c'
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try:
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fp = open(cachename, 'w')
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except IOError:
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print 'flp: can\'t create cache file', cachename
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return # Never mind
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fp.write('\0\0\0\0') # Seek back and write MAGIC when done
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wrlong(fp, getmtime(filename))
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1993-05-24 14:16:22 +00:00
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altforms = _pack_cache(forms)
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marshal.dump(altforms, fp)
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fp.seek(0)
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fp.write(MAGIC)
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fp.close()
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#print 'flp: wrote cache file', cachename
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#
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# External: print some statements that set up the internal cache.
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# This is for use with the "freeze" script. You should call
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# flp.freeze(filename) for all forms used by the script, and collect
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# the output on a file in a module file named "frozenforms.py". Then
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# in the main program of the script import frozenforms.
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# (Don't forget to take this out when using the unfrozen version of
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# the script!)
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#
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def freeze(filename):
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forms = parse_forms(filename)
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altforms = _pack_cache(forms)
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print 'import flp'
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print 'flp._internal_cache[', `filename`, '] =', altforms
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#
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# Internal: create the data structure to be placed in the cache
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#
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def _pack_cache(forms):
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1992-02-19 14:50:10 +00:00
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altforms = {}
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for name in forms.keys():
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obj, list = forms[name]
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altobj = obj.__dict__
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altlist = []
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for obj in list: altlist.append(obj.__dict__)
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altforms[name] = altobj, altlist
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1993-05-24 14:16:22 +00:00
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return altforms
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1991-12-11 17:29:59 +00:00
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#
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# Internal: Locate form file (using PYTHONPATH) and open file
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#
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def _open_formfile(filename):
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1992-02-19 14:50:10 +00:00
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return _open_formfile2(filename)[0]
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def _open_formfile2(filename):
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1991-12-11 17:29:59 +00:00
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if filename[-3:] <> '.fd':
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filename = filename + '.fd'
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1992-01-01 19:35:13 +00:00
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if filename[0] == '/':
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1991-12-11 17:29:59 +00:00
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try:
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fp = open(filename,'r')
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except IOError:
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fp = None
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else:
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for pc in sys.path:
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1992-03-31 19:04:48 +00:00
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pn = os.path.join(pc, filename)
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1991-12-11 17:29:59 +00:00
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try:
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fp = open(pn, 'r')
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1992-02-19 14:50:10 +00:00
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filename = pn
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1991-12-11 17:29:59 +00:00
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break
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except IOError:
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fp = None
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1992-01-01 19:35:13 +00:00
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if fp == None:
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1991-12-11 17:29:59 +00:00
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raise error, 'Cannot find forms file ' + filename
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1992-02-19 14:50:10 +00:00
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return fp, filename
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1991-12-11 17:29:59 +00:00
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#
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# Internal: parse the fd file header, return number of forms
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#
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def _parse_fd_header(file):
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# First read the magic header line
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datum = _parse_1_line(file)
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if datum <> ('Magic', 12321):
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raise error, 'Not a forms definition file'
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# Now skip until we know number of forms
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while 1:
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datum = _parse_1_line(file)
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1992-01-01 19:35:13 +00:00
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if type(datum) == type(()) and datum[0] == 'Numberofforms':
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1991-12-11 17:29:59 +00:00
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break
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return datum[1]
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#
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# Internal: parse fd form, or skip if name doesn't match.
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# the special value None means 'allways parse it'.
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#
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def _parse_fd_form(file, name):
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datum = _parse_1_line(file)
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if datum <> FORMLINE:
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raise error, 'Missing === FORM === line'
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form = _parse_object(file)
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1992-01-01 19:35:13 +00:00
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if form.Name == name or name == None:
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1991-12-11 17:29:59 +00:00
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objs = []
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for j in range(form.Numberofobjects):
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obj = _parse_object(file)
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objs.append(obj)
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return (form, objs)
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else:
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for j in range(form.Numberofobjects):
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_skip_object(file)
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return None
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#
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# Internal class: a convient place to store object info fields
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#
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1991-12-26 13:03:39 +00:00
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class _newobj:
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1992-12-14 12:57:56 +00:00
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def add(self, name, value):
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1992-02-19 14:50:10 +00:00
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self.__dict__[name] = value
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def make(self, dict):
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for name in dict.keys():
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self.add(name, dict[name])
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1991-12-11 17:29:59 +00:00
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#
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# Internal parsing routines.
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#
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def _parse_string(str):
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1992-03-25 14:53:05 +00:00
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if '\\' in str:
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s = '\'' + str + '\''
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try:
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return eval(s)
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except:
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pass
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1991-12-16 13:10:14 +00:00
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return str
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1991-12-11 17:29:59 +00:00
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def _parse_num(str):
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1991-12-16 13:10:14 +00:00
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return eval(str)
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1991-12-11 17:29:59 +00:00
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def _parse_numlist(str):
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slist = string.split(str)
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nlist = []
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for i in slist:
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nlist.append(_parse_num(i))
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return nlist
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# This dictionary maps item names to parsing routines.
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# If no routine is given '_parse_num' is default.
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_parse_func = { \
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'Name': _parse_string, \
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'Box': _parse_numlist, \
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'Colors': _parse_numlist, \
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'Label': _parse_string, \
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'Name': _parse_string, \
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'Callback': _parse_string, \
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'Argument': _parse_string }
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# This function parses a line, and returns either
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# a string or a tuple (name,value)
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1992-08-25 12:31:03 +00:00
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import regex
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prog = regex.compile('^\([^:]*\): *\(.*\)')
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1991-12-16 13:10:14 +00:00
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1991-12-11 17:29:59 +00:00
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def _parse_line(line):
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1992-08-25 12:31:03 +00:00
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if prog.match(line) < 0:
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1991-12-16 13:10:14 +00:00
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return line
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1992-08-25 12:31:03 +00:00
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a = prog.regs
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1991-12-16 13:10:14 +00:00
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name = line[:a[1][1]]
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1992-01-01 19:35:13 +00:00
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if name[0] == 'N':
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1991-12-16 13:10:14 +00:00
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name = string.joinfields(string.split(name),'')
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name = string.lower(name)
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1991-12-11 17:29:59 +00:00
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name = string.upper(name[0]) + name[1:]
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1991-12-16 13:10:14 +00:00
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value = line[a[2][0]:]
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1991-12-11 17:29:59 +00:00
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try:
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pf = _parse_func[name]
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except KeyError:
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pf = _parse_num
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value = pf(value)
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return (name, value)
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def _readline(file):
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line = file.readline()
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1991-12-16 13:10:14 +00:00
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if not line:
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raise EOFError
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return line[:-1]
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1991-12-11 17:29:59 +00:00
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def _parse_1_line(file):
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1991-12-16 13:10:14 +00:00
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line = _readline(file)
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1992-01-01 19:35:13 +00:00
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while line == '':
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1991-12-11 17:29:59 +00:00
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line = _readline(file)
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return _parse_line(line)
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def _skip_object(file):
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line = ''
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while not line in (SPLITLINE, FORMLINE, ENDLINE):
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pos = file.tell()
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line = _readline(file)
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1992-01-01 19:35:13 +00:00
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if line == FORMLINE:
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1991-12-11 17:29:59 +00:00
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file.seek(pos)
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def _parse_object(file):
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1993-12-17 15:25:27 +00:00
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obj = _newobj()
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1991-12-11 17:29:59 +00:00
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while 1:
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pos = file.tell()
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datum = _parse_1_line(file)
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if datum in (SPLITLINE, FORMLINE, ENDLINE):
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1992-01-01 19:35:13 +00:00
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if datum == FORMLINE:
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1991-12-11 17:29:59 +00:00
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file.seek(pos)
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return obj
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1992-12-14 12:57:56 +00:00
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if type(datum) <> type(()) or len(datum) <> 2:
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1991-12-11 17:29:59 +00:00
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raise error, 'Parse error, illegal line in object: '+datum
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1992-12-14 12:57:56 +00:00
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obj.add(datum[0], datum[1])
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1991-12-11 17:29:59 +00:00
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#################################################################
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# Part 2 - High-level object/form creation routines #
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#################################################################
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#
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# External - Create a form an link to an instance variable.
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#
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def create_full_form(inst, (fdata, odatalist)):
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form = create_form(fdata)
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1995-08-28 02:54:01 +00:00
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exec 'inst.'+fdata.Name+' = form\n'
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1991-12-11 17:29:59 +00:00
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for odata in odatalist:
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create_object_instance(inst, form, odata)
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#
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# External - Merge a form into an existing form in an instance
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# variable.
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#
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def merge_full_form(inst, form, (fdata, odatalist)):
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1995-08-28 02:54:01 +00:00
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exec 'inst.'+fdata.Name+' = form\n'
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1991-12-11 17:29:59 +00:00
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if odatalist[0].Class <> FL.BOX:
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raise error, 'merge_full_form() expects FL.BOX as first obj'
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for odata in odatalist[1:]:
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create_object_instance(inst, form, odata)
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#################################################################
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# Part 3 - Low-level object/form creation routines #
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#################################################################
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#
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# External Create_form - Create form from parameters
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#
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def create_form(fdata):
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1992-02-19 14:50:10 +00:00
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import fl
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return fl.make_form(FL.NO_BOX, fdata.Width, fdata.Height)
|
1991-12-11 17:29:59 +00:00
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#
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# External create_object - Create an object. Make sure there are
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# no callbacks. Returns the object created.
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#
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def create_object(form, odata):
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obj = _create_object(form, odata)
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if odata.Callback:
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raise error, 'Creating free object with callback'
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return obj
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#
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# External create_object_instance - Create object in an instance.
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#
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def create_object_instance(inst, form, odata):
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obj = _create_object(form, odata)
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if odata.Callback:
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cbfunc = eval('inst.'+odata.Callback)
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obj.set_call_back(cbfunc, odata.Argument)
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if odata.Name:
|
1995-08-28 02:54:01 +00:00
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exec 'inst.' + odata.Name + ' = obj\n'
|
1991-12-11 17:29:59 +00:00
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#
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# Internal _create_object: Create the object and fill options
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#
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def _create_object(form, odata):
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|
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crfunc = _select_crfunc(form, odata.Class)
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obj = crfunc(odata.Type, odata.Box[0], odata.Box[1], odata.Box[2], \
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|
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odata.Box[3], odata.Label)
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|
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if not odata.Class in (FL.BEGIN_GROUP, FL.END_GROUP):
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|
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obj.boxtype = odata.Boxtype
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obj.col1 = odata.Colors[0]
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|
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obj.col2 = odata.Colors[1]
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|
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obj.align = odata.Alignment
|
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|
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obj.lstyle = odata.Style
|
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|
|
obj.lsize = odata.Size
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|
|
obj.lcol = odata.Lcol
|
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|
|
return obj
|
|
|
|
#
|
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|
|
# Internal crfunc: helper function that returns correct create function
|
|
|
|
#
|
|
|
|
def _select_crfunc(fm, cl):
|
1992-01-01 19:35:13 +00:00
|
|
|
if cl == FL.BEGIN_GROUP: return fm.bgn_group
|
|
|
|
elif cl == FL.END_GROUP: return fm.end_group
|
|
|
|
elif cl == FL.BITMAP: return fm.add_bitmap
|
|
|
|
elif cl == FL.BOX: return fm.add_box
|
|
|
|
elif cl == FL.BROWSER: return fm.add_browser
|
|
|
|
elif cl == FL.BUTTON: return fm.add_button
|
|
|
|
elif cl == FL.CHART: return fm.add_chart
|
|
|
|
elif cl == FL.CHOICE: return fm.add_choice
|
|
|
|
elif cl == FL.CLOCK: return fm.add_clock
|
|
|
|
elif cl == FL.COUNTER: return fm.add_counter
|
|
|
|
elif cl == FL.DIAL: return fm.add_dial
|
|
|
|
elif cl == FL.FREE: return fm.add_free
|
|
|
|
elif cl == FL.INPUT: return fm.add_input
|
|
|
|
elif cl == FL.LIGHTBUTTON: return fm.add_lightbutton
|
|
|
|
elif cl == FL.MENU: return fm.add_menu
|
|
|
|
elif cl == FL.POSITIONER: return fm.add_positioner
|
|
|
|
elif cl == FL.ROUNDBUTTON: return fm.add_roundbutton
|
|
|
|
elif cl == FL.SLIDER: return fm.add_slider
|
|
|
|
elif cl == FL.VALSLIDER: return fm.add_valslider
|
|
|
|
elif cl == FL.TEXT: return fm.add_text
|
|
|
|
elif cl == FL.TIMER: return fm.add_timer
|
1991-12-11 17:29:59 +00:00
|
|
|
else:
|
|
|
|
raise error, 'Unknown object type: ' + `cl`
|
|
|
|
|
|
|
|
|
|
|
|
def test():
|
1992-02-19 14:50:10 +00:00
|
|
|
import time
|
1994-08-01 11:34:53 +00:00
|
|
|
t0 = time.time()
|
1991-12-11 17:29:59 +00:00
|
|
|
if len(sys.argv) == 2:
|
|
|
|
forms = parse_forms(sys.argv[1])
|
1994-08-01 11:34:53 +00:00
|
|
|
t1 = time.time()
|
1992-02-19 14:50:10 +00:00
|
|
|
print 'parse time:', 0.001*(t1-t0), 'sec.'
|
|
|
|
keys = forms.keys()
|
|
|
|
keys.sort()
|
|
|
|
for i in keys:
|
1991-12-11 17:29:59 +00:00
|
|
|
_printform(forms[i])
|
|
|
|
elif len(sys.argv) == 3:
|
|
|
|
form = parse_form(sys.argv[1], sys.argv[2])
|
1994-08-01 11:34:53 +00:00
|
|
|
t1 = time.time()
|
|
|
|
print 'parse time:', round(t1-t0, 3), 'sec.'
|
1991-12-11 17:29:59 +00:00
|
|
|
_printform(form)
|
|
|
|
else:
|
|
|
|
print 'Usage: test fdfile [form]'
|
|
|
|
|
|
|
|
def _printform(form):
|
|
|
|
f = form[0]
|
|
|
|
objs = form[1]
|
|
|
|
print 'Form ', f.Name, ', size: ', f.Width, f.Height, ' Nobj ', f.Numberofobjects
|
|
|
|
for i in objs:
|
|
|
|
print ' Obj ', i.Name, ' type ', i.Class, i.Type
|
|
|
|
print ' Box ', i.Box, ' btype ', i.Boxtype
|
|
|
|
print ' Label ', i.Label, ' size/style/col/align ', i.Size,i.Style, i.Lcol, i.Alignment
|
|
|
|
print ' cols ', i.Colors
|
|
|
|
print ' cback ', i.Callback, i.Argument
|
1992-02-19 14:50:10 +00:00
|
|
|
|
|
|
|
# Local variables:
|
|
|
|
# py-indent-offset: 4
|
|
|
|
# end:
|