Function stbi__pnm_getinteger

lite/example/cpp_example/mge/cv/stb_image.h:8265–8274

}

static int stbi__pnm_getinteger(stbi__context* s, char* c) {
    int value = 0;

    while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) {
        value = value * 10 + (*c - '0');
        *c = (char)stbi__get8(s);
    }

    return value;
}

static int stbi__pnm_info(stbi__context* s, int* x, int* y, int* comp) {
    int maxv, dummy;