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}
# Implementation
## Filesystem Data
namespace eval ::vfs::kitdll::data {}
set ::vfs::kitdll::data(joe) "Test\n"
set ::vfs::kitdll::data(bob) "joe"
set {::vfs::kitdll::metadata()} [list type directory ino 0 mode 0555 nlink 2 uid 0 gid 0 size 0 atime 0 mtime 0 ctime 0]
set ::vfs::kitdll::metadata(joe) [list type file ino 1 mode 0444 nlink 1 uid 0 gid 0 size 5 atime 0 mtime 0 ctime 0]
set ::vfs::kitdll::metadata(bob) [list type link ino 4 mode 0444 nlink 1 uid 0 gid 0 size 5 atime 0 mtime 0 ctime 0]
set ::vfs::kitdll::metadata(sub) [list type directory ino 2 mode 0555 nlink 1 uid 0 gid 0 size 0 atime 0 mtime 0 ctime 0]
set ::vfs::kitdll::metadata(sub/sub2) [list type directory ino 3 mode 0555 nlink 1 uid 0 gid 0 size 0 atime 0 mtime 0 ctime 0]
proc ::vfs::kitdll::data::getData {hashkey file {start 0} {end "end"}} {
if {![info exists ::vfs::kitdll::data($file)]} {
return -code error "Invalid operation"
}
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lappend newchildren $tail
}
return $newchildren
}
## VFS
## VFS and Chan I/O
### Helpers
namespace eval ::vfs::kitdll::vfsdata {}
set ::vfs::kitdll::vfsdata::fileidx -1
### Dispatchers
### Implemented
#### Single Handler
proc ::vfs::kitdll::vfshandler {hashkey subcmd args} {
set cmd $args
set cmd [linsert $cmd 0 "::vfs::kitdll::vfsop_${subcmd}" $hashkey]
return [eval $cmd]
}
proc ::vfs::kitdll::chanhandler {hashkey subcmd args} {
set cmd $args
set cmd [linsert $cmd 0 "::vfs::kitdll::chanop_${subcmd}" $hashkey]
return [eval $cmd]
}
#### Actual handlers
##### Finished
### Actual handlers
#### Channel operation handlers
proc ::vfs::kitdll::chanop_initialize {hashkey chanId mode} {
return [list initialize finalize watch read seek]
}
proc ::vfs::kitdll::chanop_finalize {hashkey chanId} {
unset -nocomplain ::vfs::kitdll::chandata([list $hashkey $chanId])
return
}
proc ::vfs::kitdll::chanop_watch {hashkey chanId eventSpec} {
array set chaninfo $::vfs::kitdll::chandata([list $hashkey $chanId])
set chaninfo(watching) $eventSpec
set ::vfs::kitdll::chandata([list $hashkey $chanId]) [array get chaninfo]
if {[lsearch -exact $chaninfo(watching) "read"] != -1} {
after 0 [list catch "chan postevent $chanId [list {read}]"]
}
return
}
proc ::vfs::kitdll::chanop_read {hashkey chanId bytes} {
array set chaninfo $::vfs::kitdll::chandata([list $hashkey $chanId])
set pos $chaninfo(pos)
set len $chaninfo(len)
if {[lsearch -exact $chaninfo(watching) "read"] != -1} {
after 0 [list catch "chan postevent $chanId [list {read}]"]
}
if {$pos == $len} {
return ""
}
set end [expr {$pos + $bytes}]
if {$end > $len} {
set end $len
}
set data [::vfs::kitdll::data::getData $hashkey $chaninfo(file) $pos $end]
set dataLen [string length $data]
incr pos $dataLen
set chaninfo(pos) $pos
set ::vfs::kitdll::chandata([list $hashkey $chanId]) [array get chaninfo]
return $data
}
#### VFS operation handlers
proc ::vfs::kitdll::vfsop_stat {hashkey root relative actualpath} {
catch {
set ret [::vfs::kitdll::data::getMetadata $hashkey $relative]
}
if {![info exists ret]} {
vfs::filesystem posixerror $::vfs::posix(ENOENT)
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return 1
}
proc ::vfs::kitdll::vfsop_matchindirectory {hashkey root relative actualpath pattern types} {
set ret [list]
if {$pattern == ""} {
catch {
set test [::vfs::kitdll::data::getMetadata $hashkey $relative]
}
catch {
array set metadata [::vfs::kitdll::data::getMetadata $hashkey $relative]
}
if {![info exists test]} {
set children [list]
}
if {![info exists metadata]} {
return [list]
}
if {$pattern == ""} {
set children [list $relative]
} else {
set children [::vfs::kitdll::data::getChildren $hashkey $relative]
}
foreach child $children {
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return [format {0%o} $metadata(mode)]
}
}
return -code error "Invalid index"
}
proc ::vfs::kitdll::chanop_initialize {hashkey chanId mode} {
return [list initialize finalize watch read seek]
}
proc ::vfs::kitdll::chanop_finalize {hashkey chanId} {
unset -nocomplain ::vfs::kitdll::chandata([list $hashkey $chanId])
return
}
proc ::vfs::kitdll::chanop_watch {hashkey chanId eventSpec} {
array set chaninfo $::vfs::kitdll::chandata([list $hashkey $chanId])
set chaninfo(watching) $eventSpec
set ::vfs::kitdll::chandata([list $hashkey $chanId]) [array get chaninfo]
if {[lsearch -exact $chaninfo(watching) "read"] != -1} {
after 0 [list catch "chan postevent $chanId [list {read}]"]
}
return
}
proc ::vfs::kitdll::chanop_read {hashkey chanId bytes} {
array set chaninfo $::vfs::kitdll::chandata([list $hashkey $chanId])
set pos $chaninfo(pos)
set len $chaninfo(len)
if {[lsearch -exact $chaninfo(watching) "read"] != -1} {
after 0 [list catch "chan postevent $chanId [list {read}]"]
}
if {$pos == $len} {
return ""
}
set end [expr {$pos + $bytes}]
if {$end > $len} {
set end $len
}
set data [::vfs::kitdll::data::getData $hashkey $chaninfo(file) $pos $end]
set dataLen [string length $data]
incr pos $dataLen
set chaninfo(pos) $pos
set ::vfs::kitdll::chandata([list $hashkey $chanId]) [array get chaninfo]
return $data
}
proc ::vfs::kitdll::vfsop_open {hashkey root relative actualpath mode permissions} {
if {$mode != "" && $mode != "r"} {
vfs::filesystem posixerror $::vfs::posix(EROFS)
}
catch {
array set metadata [::vfs::kitdll::data::getMetadata $hashkey $relative]
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return [list $chan]
}
return -code error "No way to generate a channel, need either Tcl 8.5+, \"rechan\""
}
### No-Ops since we are a readonly filesystem
##### No-Ops since we are a readonly filesystem
proc ::vfs::kitdll::vfsop_createdirectory {args} {
vfs::filesystem posixerror $::vfs::posix(EROFS)
}
proc ::vfs::kitdll::vfsop_deletefile {args} {
vfs::filesystem posixerror $::vfs::posix(EROFS)
}
proc ::vfs::kitdll::vfsop_removedirectory {args} {
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