void ug_option_entry_print_help (UgOptionEntry* entry,
const char* prog_name,
const char* parameter_string,
const char* summary_string)
{
UgBuffer buffer;
ug_buffer_init (&buffer, 4096);
buffer.more = buffer_more;
ug_buffer_write (&buffer, "\n" "Usage:\n ", -1);
ug_buffer_write (&buffer, prog_name, -1);
ug_buffer_write (&buffer, " [OPTION...] ", -1);
ug_buffer_write (&buffer, parameter_string, -1);
ug_buffer_write (&buffer, "\n\n", -1);
if (summary_string) {
ug_buffer_write (&buffer, summary_string, -1);
ug_buffer_write (&buffer, "\n\n", -1);
}
for (; entry->long_name; entry++)
print_entry (&buffer, entry, 28);
buffer_more (&buffer);
ug_buffer_write (&buffer, "\n\n", -1);
ug_buffer_clear (&buffer, TRUE);
}
void buffer_read_buf(struct buffer_t *buffer, void *buf, int size)
{
if(!buffer)
return;
size = min(size, buffer_more(buffer));
memcpy(buf, &buffer->buf[buffer->readpos], size);
buffer->readpos += size;
}
char buffer_read_char(struct buffer_t *buffer)
{
if(!buffer)
return 0;
if(buffer_more(buffer) >= 1)
return buffer->buf[buffer->readpos++];
return (char)BUF_EOB;
}
uint8_t buffer_read_uint8(struct buffer_t *buffer)
{
if(!buffer)
return 0;
uint8_t val;
if(buffer_more(buffer) >= 1)
val = *(uint8_t*)&buffer->buf[buffer->readpos++];
else
val = (uint8_t)BUF_EOB;
return val;
}
float buffer_read_float(struct buffer_t *buffer)
{
if(!buffer)
return 0.0F;
float val;
if(buffer_more(buffer) >= 4)
{
val = *(float*)&buffer->buf[buffer->readpos];
buffer->readpos += 4;
}
else
val = 0.0f;
return val;
}
int buffer_read_int(struct buffer_t *buffer)
{
if(!buffer)
return 0;
int val;
if(buffer_more(buffer) >= 4)
{
val = *(int*)&buffer->buf[buffer->readpos];
buffer->readpos += 4;
}
else
val = (int)BUF_EOB;
return val;
}
uint16_t buffer_read_uint16(struct buffer_t *buffer)
{
if(!buffer)
return 0;
uint16_t val;
if(buffer_more(buffer) >= 2)
{
val = *(uint16_t*)&buffer->buf[buffer->readpos];
buffer->readpos += 2;
}
else
val = (uint16_t)BUF_EOB;
return val;
}
double buffer_read_double(struct buffer_t *buffer)
{
if(!buffer)
return 0;
double val;
if(buffer_more(buffer) >= 8)
{
val = *(double*)&buffer->buf[buffer->readpos];
buffer->readpos += 8;
}
else
val = (double)BUF_EOB;
return val;
}
struct string_t *buffer_read_string(struct buffer_t *buffer)
{
if(!buffer)
return NULL;
struct string_t *s = new_string();
while(buffer_more(buffer))
{
char c = buffer->buf[buffer->readpos++];
if(c == 0)
break;
string_cat_char(s, c);
}
return s;
}
