urbit/jets/e/lore.c
2015-12-07 19:19:11 -05:00

66 lines
1.2 KiB
C

/* j/5/lore.c
**
*/
#include "all.h"
u3_noun
u3qe_lore(u3_atom lub)
{
c3_w len_w = u3r_met(3, lub);
c3_w pos_w = 0;
u3_noun tez = u3_nul;
while ( 1 ) {
c3_w meg_w = 0;
c3_y end_y;
c3_y byt_y;
while ( 1 ) {
if ( pos_w >= len_w ) {
byt_y = 0;
end_y = c3y;
break;
}
byt_y = u3r_byte(pos_w + meg_w, lub);
if ( (10 == byt_y) || (0 == byt_y) ) {
end_y = __(byt_y == 0);
break;
} else meg_w++;
}
if ((byt_y == 0) && ((pos_w + meg_w + 1) < len_w)) {
return u3m_bail(c3__exit);
}
{
c3_y* byts_y = alloca(meg_w);
u3r_bytes(pos_w, meg_w, byts_y, lub);
if ( _(end_y) ) {
return u3kb_flop(u3nc(u3i_bytes(meg_w, byts_y), tez));
}
if ( pos_w >= len_w ) {
return u3kb_flop(tez);
}
tez = u3nc(u3i_bytes(meg_w, byts_y), tez);
pos_w += (meg_w + 1);
}
}
}
u3_noun
u3we_lore(u3_noun cor)
{
u3_noun lub;
if ( (u3_none == (lub = u3r_at(u3x_sam, cor))) ||
(c3n == u3ud(lub)) )
{
return u3m_bail(c3__fail);
} else {
return u3qe_lore(lub);
}
}