2013/2/8 Torsten Bögershausen <tbo...@web.de>:
> On 08.02.13 03:10, Jiang Xin wrote:
>> + /* If no error occurs, returns columns really required with
>> utf8_strwidth. */
>> + if (0 <= columns)
>> + columns = utf8_strwidth(buf.buf);
>> + strbuf_release(&buf);
>> + return columns;
>> +}
>> +
>
> I don't think we handle the return code from fputs() correctly.
>
> Please dee below for specifications on fprintf(),
> something like the following could do:
>
> int utf8_fprintf(FILE *stream, const char *format, ...)
> {
> struct strbuf buf = STRBUF_INIT;
> va_list arg;
> int columns = 0;
>
> va_start (arg, format);
> strbuf_vaddf(&buf, format, arg);
> va_end (arg);
>
> if (EOF != fputs(buf.buf, stream))
> columns = utf8_strwidth(buf.buf);
> strbuf_release(&buf);
> return columns;
> }
As fputs() returns a non-negative number (as opposed to 0) on
successful completion,
Test fputs() return value as "fputs() >=0" is correct, while "fputs()
== 0", "fputs() != 0"
are wrong. I think it's OK, must I send a new re-roll for this?
EOF is defined as (-1) in stdio.h:
#define EOF (-1)
> And as a side note: would fprintf_strwidth() be a better name?
This is a nice candidate.
--
Jiang Xin
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