/* @brief Draw a line of text to a cairo context.
*
* @param cr A cairo context for drawing to the screen.
* @param text The text to be drawn.
* @param line The index of the line to be drawn (counting from the top).
* @param foreground The color of the text.
* @param background The color of the background.
* @return Void.
*/
static void draw_line(cairo_t *cr, const char *text, uint32_t line, color_t *foreground, color_t *background) {
pthread_mutex_lock(&global.draw_mutex);
cairo_set_source_rgb(cr, background->r, background->g, background->b);
/* Add 2 to fix a weird offsetting bug. TODO: Fix the bug properly. */
cairo_rectangle(cr, 0, line * settings.height + 2, settings.width, settings.height);
cairo_stroke_preserve(cr);
cairo_fill(cr);
offset_t offset = calculate_line_offset(line);
/* Parse the response line as we draw it. */
char *c = (char *)text;
while (c && *c != '\0') {
draw_t d = parse_response_line(&c);
char saved = *c;
*c = '\0';
switch (d.type) {
case DRAW_IMAGE:
offset.x += draw_image(cr, d.data, offset) + settings.height / 10;
break;
case DRAW_TEXT:
default:
offset.x += draw_text(cr, d.data, offset, foreground);
break;
}
*c = saved;
}
pthread_mutex_unlock(&global.draw_mutex);
}
int processline(io *s)
{
int code;
int m;
ssize_t sz;
char line[512], msgid[512];
sz = parse_response_line(s, &code, line);
if(sz == -1)
msg_fail("parse_response_line: %s", msg_get());
switch(code) {
case 223:
break;
case 422:
exit(EXIT_SUCCESS);
default:
msg_fail("Received unexpected response code %d", code);
}
m = sscanf(line, "%*d %*d %s", msgid);
if(m == 0)
msg_fail("Failed to parse message-id from response");
printf("%s\n", msgid);
return 0;
}
void greeting(io *s)
{
size_t sz;
int code;
sz = parse_response_line(s, &code, NULL);
if(sz == -1)
msg_fail("parse_response_line: %s", msg_get());
switch(code) {
case 200:
case 201:
break;
default:
msg_fail("Received unexpected response code %d", code);
}
}
void getlatest(io *s)
{
ssize_t sz;
int code;
int high;
int i;
char line[512], msgid[512];
int m;
int n;
io_printf(s, "GROUP %s\r\n", group);
sz = parse_response_line(s, &code, line);
if(sz == -1)
msg_fail("parse_response_line: %s", msg_get());
switch(code) {
case 211:
break;
case 411:
msg_fail("No such newsgroup");
default:
msg_fail("Received unexpected response code %d", code);
}
m = sscanf(line, "%*d %*d %*d %d", &high);
if(m == 0)
msg_fail("Failed to parse latest article number from response line");
io_printf(s, "STAT %d\r\n", high);
processline(s);
for(i = 1; i < max; i++)
io_printf(s, "LAST\r\n");
for(i = 1; i < max; i++)
processline(s);
}