On Thu, Sep 6, 2012 at 2:20 AM, Torsten Bögershausen <tboegi@xxxxxx> wrote:
> On 09/05/2012 08:15 PM, Torsten Bögershausen wrote:
>>
>> On 04.09.12 12:39, Nguyễn Thái Ngọc Duy wrote:
>>>
>>> +/* return the number of columns of string 's' in current locale */
>>> +int gettext_width(const char *s)
>>> +{
>>> + static int is_utf8 = -1;
>>> + if (is_utf8 == -1)
>>> + is_utf8 = !strcmp(charset, "UTF-8");
>>> +
>>> + return is_utf8 ? utf8_strwidth(s) : strlen(s);
>>
>>
>> Will that work for non-ASCII encodings?
>> For ISO-8859-x we can say strlen() == strwidth(),
>> but for other encodings using multibytes that doesn't work, does it?
No it does not. I think I mentioned that in the first version that I
was only interested in utf-8. Others can extend the function for their
favourite encodings.
> (Sorry the message went out before completely written)
> Something like that:
>
> int gettext_width(const char *s) {
>
> static int is_utf8 = -1;
>
> if (is_utf8 == -1)
>
> is_utf8 = !strcmp(charset, "UTF-8");
>
> if (is_utf8)
> return utf8_strwidth(s);
> else {
> char *s_utf = reencode_string(s, "UTF-8", charset);
> if (s_utf) {
> witdh = utf8_strwidth(s_utf);
> free(s_utf);
> } else
> width = strlen(s);
>
> return width;
> }
Yes, something like that, assuming that column information is intact
after the conversion. Maybe you can make that a new function, int
strwidth(const char *str, const char *charset), and make
gettext_strwidth() a thin wrapper:
int gettext_strwidth(const char *s)
{
return strwidth(s, charset);
}
--
Duy
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