code wiki / _hdl_build / nx_mobi_cover_gate.nx
nx_mobi_cover_gate.nx
buildroot/runtime/_hdl_build/nx_mobi_cover_gate.nx
about
nx_mobi_cover_gate.nx -- gate the EMBEDDED-cover extraction (operator: "we dont need it generate ... how does
calibre get all the book info ... i dont want to have internet connection"). The cover comes from the file ITSELF,
offline -- never generated, never downloaded. Grounded on the registered MOBI spec (mobileread-mobi-spec.ref):
First Image index @ MOBI-hdr 0x6c (rec0off+108); EXTH 201 coveroffset is ADDED to it to find the cover PDB record.
GREEN proves: (1) a MOBI carrying an embedded cover -> reader/<slug>/cover.gif extracted BYTE-EXACT (all 35
bytes of the real GIF, incl our navy color = it's THAT image, not random), (2) book.json cover wired to it,
(3) LIAR-KILL: a MOBI with NO embedded cover -> cover field stays "" and NO cover file is fabricated.
expect_exit: 0 license_tier: ORIGINAL
dependencies 1 imports · 0 importers
imports: nx_syscalls.nx
imported by: nobody (leaf or entry point)
call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown
structs
| none |
consts
| none |
functions
| 11 | func gp(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } |
| 12 | func gnum(v0: i64) -> i64 { var v: i64=v0; if v<0 { sys_write(1,"-" as *u8,1); v=0-v } let b: *u8=sys_mmap(24); var k: i64=0; if v==0 {b[0]=48 as u8;k=1} while v>0 {b[k]=(48+(v%10)) as u8; v=v/10; k=k+1} let o: *u8=sys_mmap(24); var j: i64=0; while j<k {o[j]=b[k-1-j];j=j+1} sys_write(1,o,k); return 0 } |
| 13 | func ghas(hay: *u8, hl: i64, needle: *u8) -> i64 called by 1: main |
| 20 | func rd(path: *u8, lenp: *i64) -> *u8 { lenp[0]=0; return sys_read_file(path, lenp) } |
| 21 | func spawn(path: *u8, a0: *u8, a1: *u8, redir: *u8) -> i64 |
| 42 | func main() -> i64 |