102 lines
2.6 KiB
Smalltalk
102 lines
2.6 KiB
Smalltalk
"
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(C) 2010-2012 by Holger Hans Peter Freyther
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All Rights Reserved
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"
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Collection subclass: MessageBuffer [
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| chunks |
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<category: 'OsmoNetwork-Message'>
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<comment: 'A network buffer/creation class. Modeled after the msgb of osmocore'>
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MessageBuffer class >> new [
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<category: 'creation'>
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^self basicNew initialize
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]
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initialize [
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<category: 'accessing'>
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chunks := OrderedCollection new.
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]
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toMessage [
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<category: 'creation'>
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^ self
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]
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prependByteArray: aByteArray [
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<category: 'creation'>
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chunks addFirst: aByteArray.
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]
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putByte: aByte [
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<category: 'creation'>
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chunks add: (ByteArray with: aByte)
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]
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putByteArray: aByteArray [
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<category: 'creation'>
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chunks add: aByteArray.
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]
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put16: aInt [
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| data low high |
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<category: 'creation'>
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low := (aInt bitAnd: 16rFF).
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high := (aInt bitShift: -8) bitAnd: 16rFF.
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data := ByteArray with: low with: high.
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chunks add: data.
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]
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putLen16: aInt [
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| data low high |
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<category: 'creation'>
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low := (aInt bitShift: -8) bitAnd: 16rFF.
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high := aInt bitAnd: 16rFF.
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data := ByteArray with: low with: high.
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chunks add: data.
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]
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putLen32: aInt [
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| a b c d data |
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<category: 'creation'>
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a := (aInt bitShift: -24) bitAnd: 16rFF.
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b := (aInt bitShift: -16) bitAnd: 16rFF.
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c := (aInt bitShift: -8) bitAnd: 16rFF.
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d := (aInt bitShift: 0) bitAnd: 16rFF.
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data := ByteArray with: a with: b with: c with: d.
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chunks add: data.
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]
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toByteArray [
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<category: 'deprecated'>
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^ self asByteArray.
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]
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size [
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"Count of how much data we have collected"
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<category: 'accessing'>
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^ chunks inject: 0 into: [:acc :each | acc + each size ]
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]
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do: aBlock [
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<category: 'accessing'>
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chunks do: [:chunk |
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chunk do: aBlock.
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].
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]
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]
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