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"
(C) 2010-2011 by Holger Hans Peter Freyther
All Rights Reserved
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"
PackageLoader fileInPackage: 'PetitParser'.
PP.PPCompositeParser subclass: MGCPGrammar [
| MGCPMessage EOL One_WSP MGCPMessage MGCPCommandLine MGCPVerb transaction_id endpointName MGCPversion MGCPParameter MGCPCommand ParameterValue SDPRecord SDPLine SDPinformation MGCPResponseLine responseCode responseString packageName |
<category: 'OsmoMGCP-Core'>
<comment: 'I am a the Grammar of the Media Gateway Control Protocol'>
start [
<category: 'accessing'>
^ MGCPMessage end
]
EOL [
<category: 'grammar-common'>
^ (Character cr asParser, Character lf asParser) /
Character lf asParser
]
One_WSP [
<category: 'grammar-common'>
^ #blank asParser plus
]
MGCPMessage [
<category: 'grammar-common'>
^ MGCPCommand / self MGCPResponse
]
MGCPCommandLine [
<category: 'grammar-cmd'>
^ self MGCPVerb,
self One_WSP,
self transaction_id,
self One_WSP,
self endpointName,
self One_WSP,
self MGCPversion,
self EOL
]
MGCPVerb [
<category: 'grammar-cmd'>
^ 'EPCF' asParser /
'CRCX' asParser /
'MDCX' asParser /
'DLCX' asParser /
'RQNT' asParser /
'NTFY' asParser /
'AUEP' asParser /
'AUCX' asParser /
'RSIP' asParser
]
transaction_id [
<category: 'grammar-cmd'>
^ ((#digit asParser) min: 1 max: 9) flatten
]
endpointName [
<category: 'grammar-cmd'>
"simplified version"
^ #word asParser star flatten, $@ asParser, #word asParser star flatten
]
MGCPversion [
<category: 'grammar-cmd'>
"skipping the optional profilename for now"
^ 'MGCP' asParser, One_WSP, #digit asParser, $. asParser, #digit asParser
]
MGCPCommand [
<category: 'grammar-cmd'>
^ MGCPCommandLine, MGCPParameter star, SDPRecord optional
]
MGCPParameter [
<category: 'grammar-cmd'>
^ ParameterValue, EOL
]
wordParser [
^ #word asParser / #punctuation asParser / ' ' asParser
]
ParameterValue [
^ ($K asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($B asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($C asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($I asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($N asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($X asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($L asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($M asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($R asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($S asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($D asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($O asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($P asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($E asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($Z asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($Z asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('Z2' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('I2' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($F asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($Q asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($T asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('RM' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('RD' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
($A asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('ES' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('PL' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('MD' asParser, $: asParser, #blank asParser star, self wordParser star flatten) /
('X-Osmo-CP' asParser, $: asParser, #blank asParser star, self wordParser star flatten)
]
MGCPResponse [
"
MGCPResponse = MGCPResponseLine 0*(MGCPParameter) *2(EOL *SDPinformation)
The *2 appears to be weird
"
^ MGCPResponseLine,
MGCPParameter star,
SDPRecord optional
]
responseCode [
<category: 'response'>
^ (#digit asParser, #digit asParser, #digit asParser) flatten
]
packageName [
"Not Complete yet"
"packageName = 1*(ALPHA / DIGIT / HYPHEN) ; Hyphen neither first or last"
<category: 'response'>
^ #letter asParser plus
]
responseString [
<category: 'response'>
^ #letter asParser plus flatten
]
MGCPResponseLine [
^ responseCode,
self One_WSP,
transaction_id,
(self One_WSP, '/' asParser, packageName) optional,
(self One_WSP, responseString) optional,
EOL
]
SDPRecord [
^ EOL, SDPinformation
]
SDPinformation [
^ (SDPLine, EOL) plus
]
SDPLine [
^ self wordParser star flatten
]
]
Eval [
MGCPGrammar initialize.
]
|
