Re: Reading in dictionary from txt file: options for speed
Re: Reading in dictionary from txt file: options for speed
- Subject: Re: Reading in dictionary from txt file: options for speed
- From: Miles <email@hidden>
- Date: Thu, 16 Apr 2009 15:52:43 -0700
Also, any idea why these lines would give different results in different
projects?
NSString *searchStr = @"\njoy\n";
NSData *strData = [searchStr
dataUsingEncoding:NSUTF8StringEncoding];
const char *strBytes = [strData bytes];
When this code is in the project you sent, strBytes shows '\njoy\n' in the
debugger (which is what I'd expect), but when i copy the exact code to a
different project strBytes shows extra memory stuff after it, like
'\njoy\n\x1b\x14\xc0'
Seems very odd.
On Thu, Apr 16, 2009 at 12:01 PM, Miles <email@hidden> wrote:
>
> It looks like I have the search working like this, but I have to
> double-space the dictionary file to have a leading \n.
>
> NSString *searchStr = @"\njoy\n";
> NSData *strData = [searchStr
> dataUsingEncoding:NSUTF8StringEncoding];
> const char *strBytes = [strData bytes];
> const char *fileBytes = [stringFileContents bytes];
> char *ptr = strstr(fileBytes, strBytes);
>
> Is that what you were thinking?
> Thanks!
>
>
>
>
>
> On Thu, Apr 16, 2009 at 11:47 AM, WT <email@hidden> wrote:
>
>> Marcel,
>>
>> since he'll be dealing with the string's raw bytes, won't Miles have to
>> manually add a null byte to terminate the search string?
>>
>> Wagner
>>
>>
>> On Apr 16, 2009, at 7:57 PM, Marcel Weiher wrote:
>>
>>
>>> On Apr 16, 2009, at 10:10 , Miles wrote:
>>>
>>> Marcel, NOW we're talking. This has really been such an eye-opening
>>>> thread.
>>>>
>>>> Now it's googling time to try to figure out how to search for a string
>>>> in there.
>>>>
>>>
>>> 1. Get the bytes out of your search string in the encoding that your
>>> dictionary is in
>>> 2. surround with '\n' characters to make sure you find whole words,
>>> not substrings
>>> (you will need to add a leading '\n' to your strings file
>>> 3. Use strnstr() -- man strnstr()
>>>
>>> Cheers,
>>>
>>> Marcel
>>>
>>>
>>
>
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