Am 17.05.2009 23:00, Xueming Shen schrieb:
Ulf Zibis wrote:
*** Encoder-Suggestions:
(26) Why copying String to char[] in initC2B(), String access should
be same fast?:
- char[] sb = b2cSB.toCharArray();
- char[] db = b2c[i].toCharArray();
-Ulf
because the b2c tables need to be updated before used to generate the
c2b tables, if there is
a b2cNR table (means there are multiple "bytes" mapped to a single
same "char", when do
c->b, we need to know which "bytes" to map to, this is done by
specified that in .nr map). In
theory we need only do that if b2cNR presents, but I don't want to
keep two paths. A possible
optimization is to pass in char[] instead of String, then only make a
copy when necessary.
Oops, yes, it was late after hours of thinking digital.
While thinking, why I didn't have this problem in my code....
I didn't have to manipulate the b2c map, as I transformed all the
NR's to the *.irregularities map file, which you called *.c2b, which is
in fact an overwriting of the from b2c generated c2b map. (BTW, in *.nr
the 2nd value is redundant and could be saved)
So if we have
15 --> 000A
25 --> 000A
in *.map, instead of
25 (--> 000A)
in *.nr, we could have
15 <-- 000A
in *.c2b
So avoiding the copying of the whole b2c map should be an additional
sincere argument for my suggestion (21), which I must correct:
(21) join *.nr to *.c2b files (25->000a becomes 000a->15):
Benefit[21]: reduce no. of files
Benefit[22]: simplifies initC2B() (avoids 2 loops + saves copying the
whole b2c map)
-Ulf
