On Wed, May 1, 2019 at 9:40 PM Nitish Saboo <nitish.sabo...@gmail.com>
wrote:
> Actually, this is what is happening:
>
> func Nitish(key *C.char, value *C.char, value_len C.size_t){
>
> f.WriteString(C.GoString(key)+ ":")
> f.WriteString(C.GoString(value))
> f.WriteString("\n")
>
> }
>
> This callback method is getting called from C code multiple times.
>
> I am planning to write the key, value pairs in a file.But the 'value' field
> is getting appended with the previous value in the buffer.
>
> These are the contents that are getting written to the file.Please see the
> following from bottom to top.If you see for every key field (bottom to top),
> image/gif and then 'Fp5PpR2roT6uPnte47' is getting appended as I continue
> writing key-values to the file.
>
> But I need only the first word from the value field.
>
> Actual:
>
> sentfileid: - Fp5PpR2roT6uPnte47 image/gif
> sentmimetype: Fp5PpR2roT6uPnte47 image/gif
> rcvdfileid: image/gif
>
> Expected:
>
> sentfileid: -
> sentmimetype: Fp5PpR2roT6uPnte47
> rcvdfileid: image/gif
>
> Please let me know how can I achieve this ?
>
> Thanks
>
>
>
> On Wed, May 1, 2019 at 11:25 AM Nitish Saboo <nitish.sabo...@gmail.com>
> wrote:
>
>> Hi,
>> I have this method:
>>
>> func CallBack(key *C.char, value *C.char, value_len C.size_t){
>>
>> }
>>
>> and the *value* parameter in the arguments is containing the given
>> string 'Fp5PpR2roT6uPnte47 image/gif'.
>> I want to extract only first word from the string.Let me know how can I
>> do this.
>>
>> I don't want to split the string into a slice of individual characters.
>>
>
You could use something like this:
https://play.golang.org/p/fcE2UJEUFPy
That example has the option of only converting a fixed number of bytes from
the C string to the Go string, if you know how big the prefix is.
>
>> Thanks
>>
>> On Wed, May 1, 2019 at 6:27 AM Justin Israel <justinisr...@gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Wednesday, May 1, 2019 at 7:06:47 AM UTC+12, Nitish Saboo wrote:
>>>>
>>>> Apologies.I did this 'strings.Split(C.GoString(*C.char),"").
>>>> I am getting 'Incompatible types' compilation error.
>>>>
>>>
>>> Are you literally doing this?
>>> strings.Split(C.GoString(*C.char),"")
>>>
>>> Something like this should be working correctly:
>>>
>>> someCArr := getSomeCArr()
>>> chars := strings.Split(C.GoString(someCArr),"")
>>>
>>> Is your goal to split the string into a slice of individual characters?
>>> Because that is what your delim suggests.
>>>
>>>
>>>> Thanks
>>>>
>>>>
>>>> On Wed, May 1, 2019 at 12:30 AM Nitish Saboo <nitish...@gmail.com>
>>>> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I want to convert *C.char to array of strings in Go.
>>>>> I want to do this because I want the first word from the
>>>>> string.Strings are getting appended to *C.char and I want the first word
>>>>> of
>>>>> the string.
>>>>> I am doing it using 'strings.Split(C.GoString(*C.char))[0]', but it is
>>>>> giving error.
>>>>> Can someone correct me here ?
>>>>>
>>>>> Thanks
>>>>>
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>>
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