[FFmpeg-devel] [PATCH 1/2] lavu: add locale-independent sscanf implementation

[Carl Eugen Hoyos]

2018-11-11 17:41 GMT+01:00, Paul B Mahol <onemda at gmail.com>:

> +static long long scanexp(FFFILE *f, int pok)
> +{
> +    int c;
> +    int x;
> +    long long y;
> +    int neg = 0;
> +
> +    c = shgetc(f);
> +    if (c=='+' || c=='-') {
> +        neg = (c=='-');
> +        c = shgetc(f);
> +        if (c-'0'>=10U && pok) shunget(f);
> +    }
> +    if (c-'0'>=10U) {
> +        shunget(f);
> +        return LLONG_MIN;
> +    }
> +    for (x=0; c-'0'<10U && x<INT_MAX/10; c = shgetc(f))
> +        x = 10*x + c-'0';
> +    for (y=x; c-'0'<10U && y<LLONG_MAX/100; c = shgetc(f))
> +        y = 10*y + c-'0';
> +    for (; c-'0'<10U; c = shgetc(f));
> +    shunget(f);
> +    return neg ? -y : y;
> +}

Did you write this function?
The style looks a little unusual for FFmpeg...

Carl Eugen