diff options
Diffstat (limited to 'Mac/Lib/preferences.py')
| -rw-r--r-- | Mac/Lib/preferences.py | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/Mac/Lib/preferences.py b/Mac/Lib/preferences.py deleted file mode 100644 index 8b77012..0000000 --- a/Mac/Lib/preferences.py +++ /dev/null @@ -1,219 +0,0 @@ -# -# General parser/loaders for preferences files and such -# -from Carbon import Res -import macfs -import struct -import MACFS - -READ=1 -READWRITE=3 -Error = "Preferences.Error" - -debug = 0 - -class NullLoader: - def __init__(self, data=None): - self.data = data - - def load(self): - if self.data is None: - raise Error, "No default given" - return self.data - - def save(self, data): - raise Error, "Cannot save to default value" - - def delete(self, deep=0): - if debug: - print 'Attempt to delete default value' - raise Error, "Cannot delete default value" - -_defaultdefault = NullLoader() - -class ResLoader: - def __init__(self, filename, resid, resnum=None, resname=None, default=_defaultdefault): - self.filename = filename - self.fss = macfs.FSSpec(self.filename) - self.resid = resid - self.resnum = resnum - self.resname = resname - self.default = default - self.data = None - - def load(self): - oldrh = Res.CurResFile() - try: - rh = Res.FSpOpenResFile(self.fss, READ) - except Res.Error: - self.data = self.default.load() - return self.data - try: - if self.resname: - handle = Res.Get1NamedResource(self.resid, self.resname) - else: - handle = Res.Get1Resource(self.resid, self.resnum) - except Res.Error: - self.data = self.default.load() - else: - if debug: - print 'Loaded', (self.resid, self.resnum, self.resname), 'from', self.fss.as_pathname() - self.data = handle.data - Res.CloseResFile(rh) - Res.UseResFile(oldrh) - return self.data - - def save(self, data): - if self.data is None or self.data != data: - oldrh = Res.CurResFile() - rh = Res.FSpOpenResFile(self.fss, READWRITE) - try: - handle = Res.Get1Resource(self.resid, self.resnum) - except Res.Error: - handle = Res.Resource(data) - handle.AddResource(self.resid, self.resnum, '') - if debug: - print 'Added', (self.resid, self.resnum), 'to', self.fss.as_pathname() - else: - handle.data = data - handle.ChangedResource() - if debug: - print 'Changed', (self.resid, self.resnum), 'in', self.fss.as_pathname() - Res.CloseResFile(rh) - Res.UseResFile(oldrh) - - def delete(self, deep=0): - if debug: - print 'Deleting in', self.fss.as_pathname(), `self.data`, deep - oldrh = Res.CurResFile() - rh = Res.FSpOpenResFile(self.fss, READWRITE) - try: - handle = Res.Get1Resource(self.resid, self.resnum) - except Res.Error: - if deep: - if debug: print 'deep in', self.default - self.default.delete(1) - else: - handle.RemoveResource() - if debug: - print 'Deleted', (self.resid, self.resnum), 'from', self.fss.as_pathname() - self.data = None - Res.CloseResFile(rh) - Res.UseResFile(oldrh) - -class AnyResLoader: - def __init__(self, resid, resnum=None, resname=None, default=_defaultdefault): - self.resid = resid - self.resnum = resnum - self.resname = resname - self.default = default - self.data = None - - def load(self): - try: - if self.resname: - handle = Res.GetNamedResource(self.resid, self.resname) - else: - handle = Res.GetResource(self.resid, self.resnum) - except Res.Error: - self.data = self.default.load() - else: - self.data = handle.data - return self.data - - def save(self, data): - raise Error, "Cannot save AnyResLoader preferences" - - def delete(self, deep=0): - raise Error, "Cannot delete AnyResLoader preferences" - -class StructLoader: - def __init__(self, format, loader): - self.format = format - self.loader = loader - - def load(self): - data = self.loader.load() - return struct.unpack(self.format, data) - - def save(self, data): - data = apply(struct.pack, (self.format,)+data) - self.loader.save(data) - - def delete(self, deep=0): - self.loader.delete(deep) - -class PstringLoader: - def __init__(self, loader): - self.loader = loader - - def load(self): - data = self.loader.load() - len = ord(data[0]) - return data[1:1+len] - - def save(self, data): - if len(data) > 255: - raise Error, "String too big for pascal-style" - self.loader.save(chr(len(data))+data) - - def delete(self, deep=0): - self.loader.delete(deep) - -class VersionLoader(StructLoader): - def load(self): - while 1: - data = self.loader.load() - if debug: - print 'Versionloader:', `data` - try: - rv = struct.unpack(self.format, data) - rv = self.versioncheck(rv) - return rv - except (struct.error, Error): - self.delete(1) - - def versioncheck(self, data): - return data - -class StrListLoader: - def __init__(self, loader): - self.loader = loader - - def load(self): - data = self.loader.load() - num, = struct.unpack('h', data[:2]) - data = data[2:] - rv = [] - for i in range(num): - strlen = ord(data[0]) - if strlen < 0: strlen = strlen + 256 - str = data[1:strlen+1] - data = data[strlen+1:] - rv.append(str) - return rv - - def save(self, list): - rv = struct.pack('h', len(list)) - for str in list: - rv = rv + chr(len(str)) + str - self.loader.save(rv) - - def delete(self, deep=0): - self.loader.delete(deep) - -def preferencefile(filename, creator=None, type=None): - create = creator != None and type != None - vrefnum, dirid = macfs.FindFolder(MACFS.kOnSystemDisk, 'pref', create) - fss = macfs.FSSpec((vrefnum, dirid, ":Python:" + filename)) - oldrf = Res.CurResFile() - if create: - try: - rh = Res.FSpOpenResFile(fss, READ) - except Res.Error: - Res.FSpCreateResFile(fss, creator, type, MACFS.smAllScripts) - else: - Res.CloseResFile(rh) - Res.UseResFile(oldrf) - return fss - |