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|
use std
pkg fileutil =
type walkiter = struct
dirstk : std.dir#[:]
curdir : byte[:][:]
;;
impl iterable walkiter -> byte[:]
const bywalk : (dir : byte[:] -> walkiter)
;;
const bywalk = {p
match std.diropen(p)
| `std.Ok d:
-> [.dirstk = std.sldup([d][:]), .curdir = std.sldup([std.sldup(p)][:])]
| `std.Err e:
-> [.dirstk = [][:], .curdir = [][:]]
;;
}
impl iterable walkiter -> byte[:] =
__iternext__ = {itp, valp
var cur, p
:nextfile
if itp.dirstk.len < 1
-> false
;;
cur = itp.dirstk[itp.dirstk.len - 1]
match std.dirread(cur)
| `std.Some ".": goto nextfile
| `std.Some "..": goto nextfile
| `std.Some ent:
p = std.pathcat(itp.curdir[itp.curdir.len - 1], ent)
if std.fisdir(p)
match std.diropen(p)
| `std.Ok d:
std.slpush(&itp.dirstk, d)
std.slpush(&itp.curdir, p)
| `std.Err e: /* ? */
std.slfree(p)
;;
goto nextfile
;;
valp# = p
-> true
| `std.None:
std.dirclose(cur)
std.slfree(itp.curdir[itp.curdir.len - 1])
std.slpop(&itp.curdir)
std.slpop(&itp.dirstk)
goto nextfile
;;
}
__iterfin__ = {itp, valp
std.slfree(valp#)
}
;;
generic last = {sl : @a[:]
-> sl[sl.len - 1]
}
|
