1 # accept a filename on the commandline, read it and print it out to screen
 2 # only ascii right now, just like the rest of Mu
 3 #
 4 # To run:
 5 #   $ ./translate_mu apps/print-file.mu
 6 #   $ echo abc > x
 7 #   $ ./a.elf x
 8 #   abc
 9 
10 fn main _args: (addr array addr array byte) -> _/ebx: int {
11   var args/eax: (addr array addr array byte) <- copy _args
12   var n/ecx: int <- length args
13   compare n, 1
14   {
15     break-if->
16     print-string 0, "usage: cat <filename>\n"
17     return 0
18   }
19   {
20     break-if-<=
21     var filename/edx: (addr addr array byte) <- index args 1
22     var in: (handle buffered-file)
23     {
24       var addr-in/eax: (addr handle buffered-file) <- address in
25       open *filename, 0, addr-in
26     }
27     var _in-addr/eax: (addr buffered-file) <- lookup in
28     var in-addr/ecx: (addr buffered-file) <- copy _in-addr
29     {
30       var c/eax: byte <- read-byte-buffered in-addr
31       compare c, 0xffffffff  # EOF marker
32       break-if-=
33       var g/eax: grapheme <- copy c
34       print-grapheme 0, g
35       loop
36     }
37   }
38   return 0
39 }