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Overview
| Comment: | Add end-of-file handling to halfpipe. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
a0a2c6e9cac723e205f1b6f972b2be24 |
| User & Date: | pooryorick 2022-01-25 16:49:04.753 |
Context
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2022-03-09
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| 21:35 | sha1: Pass to the compiler the path to the local .h files. check-in: cecfc78bcd user: pooryorick tags: trunk | |
|
2022-03-06
| ||
| 16:06 | Changes to accomodate an accelerated version. check-in: 1941af032d user: pooryorick tags: module-aes | |
|
2022-01-25
| ||
| 16:49 | Add end-of-file handling to halfpipe. check-in: a0a2c6e9ca user: pooryorick tags: trunk | |
|
2022-01-18
| ||
| 07:43 | coroutine: Reduce quoting and add procedure markers. check-in: cb716671f7 user: pooryorick tags: trunk | |
Changes
Changes to modules/virtchannel_base/halfpipe.tcl.
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}
oo::class create ::tcl::chan::halfpipe::implementation {
superclass ::tcl::chan::events ; # -> initialize, finalize, watch
method initialize {args} {
my allow write
next {*}$args
}
method finalize {c} {
my Call -close-command $c
next $c
}
method read {c n} {
set max [string length $read]
set last [expr {$at + $n - 1}]
set result {}
# last+1 <= max
# <=> at+n <= max
# <=> n <= max-at
if {$n <= ($max - $at)} {
| > | | | 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 |
}
oo::class create ::tcl::chan::halfpipe::implementation {
superclass ::tcl::chan::events ; # -> initialize, finalize, watch
method initialize {args} {
my allow write
set eof 0
next {*}$args
}
method finalize {c} {
my Call -close-command $c
next $c
}
method read {c n} {
set max [string length $read]
set last [expr {$at + $n - 1}]
set result {}
# last+1 <= max
# <=> at+n <= max
# <=> n <= max-at
if {$n <= ($max - $at)} {
# There is enough data in the buffer to fill the request, so take
# it from there and move the read pointer forward.
append result [string range $read $at $last]
incr at $n
incr $size -$n
} else {
# We need the whole remaining read buffer, and more. For
# the latter we make the write buffer the new read buffer,
|
| ︙ | ︙ | |||
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append result $read
set at 0
set read {}
set size 0
}
}
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append result $read
set at 0
set read {}
set size 0
}
}
my Readable
if {$result eq {} && !$eof} {
return -code error EAGAIN
}
return $result
}
method write {c bytes} {
my Call -write-command $c $bytes
return [string length $bytes]
}
# # ## ### ##### ######## #############
method put bytes {
append write $bytes
set n [string length $bytes]
if {$n == 0} {
my variable eof
set eof 1
} else {
incr size $n
}
my Readable
return $n
}
# # ## ### ##### ######## #############
variable at eof read write size options
# at : first location in read buffer not yet read
# eof : indicates whether the end of the data has been reached
# read : read buffer
# write : buffer for received data, i.e.
# written into the halfpipe from
# the other side.
# size : combined length of receive and read buffers
# == amount of stored data
# options : configuration array
|
| ︙ | ︙ | |||
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set read {}
set write {}
set size 0
next
}
method Readable {} {
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set read {}
set write {}
set size 0
next
}
method Readable {} {
if {$size || $eof} {
my allow read
} else {
my variable channel
my disallow read
my Call -empty-command $channel
}
return
|
| ︙ | ︙ |