"

 Copyright (c) 2007-2010 Jan Vrany

 Copyright (c) 2009-2010 eXept Software AG

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

"

"{ Package: 'stx:libsvn' }"

"{ NameSpace: SVN }"

Object subclass:#OSProcess

        instanceVariableNames:'executable arguments environment workdir stdin stdout stderr

                exitValue runningLock'

        classVariableNames:''

        poolDictionaries:''

        category:'OS-Support'

!

!OSProcess class methodsFor:'documentation'!

copyright

"

 Copyright (c) 2007-2010 Jan Vrany

 Copyright (c) 2009-2010 eXept Software AG

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

"

! !

!OSProcess class methodsFor:'private'!

asShellQuotedArgument: anObject

    | aString unquotedStream quotedStream |

    aString := anObject asString.

    (aString first = $' and: [aString last = $'])

        ifTrue:[^aString].

    (aString first = $" and: [aString last = $"])

        ifTrue:[^aString].

    (aString allSatisfy:

        [:char|char isSeparator not and: [(#($" $< $> $& $# $; $\) includes: char) not]])

            ifTrue:[^aString].

    unquotedStream := aString readStream.

    quotedStream := (String new: aString size + 10) writeStream.

    quotedStream nextPut: $".

    [ unquotedStream atEnd ] whileFalse:

        [|char|

        char := unquotedStream next.

        (#($" $\) includes: char) ifTrue:[quotedStream nextPut: $\].

        quotedStream nextPut: char].

    quotedStream nextPut: $".

    ^quotedStream contents.

    "

        OSProcess asShellQuotedArgument: 'Hello' .

        OSProcess asShellQuotedArgument: 'Hello world'

        OSProcess asShellQuotedArgument: 'Hello'' world'

        OSProcess asShellQuotedArgument: 'Hello

        World'

    "

    "Created: / 10-10-2008 / 12:32:18 / Jan Vrany <vranyj1@fel.cvut.cz>"

    "Modified: / 02-06-2009 / 19:41:05 / Jan Vrany <vranyj1@fel.cvut.cz>"

! !

!OSProcess methodsFor:'accessing'!

arguments

    ^ arguments ? #()

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

arguments:something

    arguments := something.

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

environment

    ^ environment

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

environment:something

    environment := something.

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

executable

    ^ executable

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

executable:something

    executable := something.

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

exitValue

    self waitFor.

    ^exitValue

    "Created: / 15-03-2008 / 18:08:00 / janfrog"

    "Modified: / 19-04-2008 / 12:25:56 / Jan Vrany <vranyj1@fel.cvut.cz>"

!

stderr

    ^ stderr ? Stderr

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

stderr:something

    stderr := something.

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

stdin

    ^ stdin ? Stdin

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

stdin:something

    stdin := something.

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

stdout

    ^ stdout ? Transcript

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

stdout:something

    stdout := something.

    "Created: / 15-03-2008 / 18:21:05 / janfrog"

!

workdir

    ^ workdir ? Filename defaultDirectory

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

!

workdir:aStringOrFilename

    workdir := aStringOrFilename asString.

    "Created: / 15-03-2008 / 18:09:37 / janfrog"

    "Modified: / 09-04-2009 / 17:32:25 / Jan Vrany <vranyj1@fel.cvut.cz>"

! !

!OSProcess methodsFor:'conversion'!

asShellCommandString

    | cmdStream |

    cmdStream := String new writeStream.

    cmdStream nextPutAll:self executable.

    self arguments do:

        [:arg|

        cmdStream space.

        cmdStream nextPutAll:(self asShellQuotedArgument: arg)].

    ^cmdStream contents utf8Encoded

    "Created: / 19-03-2008 / 12:34:59 / janfrog"

    "Modified: / 31-03-2008 / 14:09:05 / janfrog"

    "Modified: / 23-03-2009 / 10:09:55 / Jan Vrany <vranyj1@fel.cvut.cz>"

! !

!OSProcess methodsFor:'operations'!

execute

    "

    self synchronized:

        [runningLock

            ifNotNil:[self error:'Process already running']

            ifNil:[runningLock := Semaphore new:0]].

    [["

        OperatingSystem isMSWINDOWSlike"false"

            ifTrue: [self executeOnStupidPlatform]

            ifFalse:[self executeOnReasonablePlatform]

     "

        (OperatingSystem

            executeCommand: self asShellCommandString

            inputFrom: self stdin

            outputTo: self stdout

            errorTo: self stderr

            auxFrom: nil

            environment: nil

            inDirectory: self workdir asString

            lineWise: (self stdout = self stderr)

            onError:[:value|exitValue := value code.false])

            ifTrue:[exitValue := 0]

    "

    ] ensure:[runningLock signalForAll. runningLock := nil]] fork

    "

    "Created: / 15-03-2008 / 18:11:20 / janfrog"

    "Modified: / 19-03-2008 / 12:35:05 / janfrog"

    "Modified: / 08-06-2008 / 19:15:45 / Jan Vrany <vranyj1@fel.cvut.cz>"

    "Modified: / 11-04-2010 / 13:04:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

waitFor

    "| lock |

    self synchronized:

        [runningLock

            ifNil:[^self]

            ifNotNil:[lock := runningLock]].

    lock wait"

    "Created: / 15-03-2008 / 18:32:41 / janfrog"

    "Modified: / 08-06-2008 / 19:15:22 / Jan Vrany <vranyj1@fel.cvut.cz>"

! !

!OSProcess methodsFor:'private'!

asShellQuotedArgument:arg

    ^ self class asShellQuotedArgument:arg

    "Created: / 10-10-2008 / 12:32:18 / Jan Vrany <vranyj1@fel.cvut.cz>"

!

executeOnReasonablePlatform

    "

    self synchronized:

        [runningLock 

            ifNotNil:[self error:'Process already running']

            ifNil:[runningLock := Semaphore new:0]].

    [["

        (OperatingSystem

            executeCommand: self asShellCommandString

            inputFrom: self stdin

            outputTo: self stdout

            errorTo: self stderr

            auxFrom: nil

            environment: nil

            inDirectory: self workdir asString

            lineWise: (self stdout = self stderr)

            onError:[:value|exitValue := value code.false])

            ifTrue:[exitValue := 0]        

    "

    ] ensure:[runningLock signalForAll. runningLock := nil]] fork

    "

    "Modified: / 19-03-2008 / 12:35:05 / janfrog"

    "Modified: / 08-06-2008 / 19:15:45 / Jan Vrany <vranyj1@fel.cvut.cz>"

    "Created: / 11-04-2010 / 12:49:15 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

executeOnStupidPlatform

    "i.e., on MS Windows. For some reasons sometimes part

     of stdout bytes are lost. Arghh.

     To workaround it, redirect output to file and then

     read that file. Stupid & complicated kludge, sigh."

    | extStdoutF extStdout extStderrF extStderr |

    [extStdout := (extStdoutF := Filename newTemporary) writeStream.

    extStderr := (extStderrF := Filename newTemporary) writeStream.        

    (OperatingSystem

            executeCommand: self asShellCommandString

            inputFrom: self stdin

            outputTo: extStdout

            errorTo: extStderr

            auxFrom: nil

            environment: nil

            inDirectory: self workdir asString

            lineWise: (self stdout = self stderr)

            onError:[:value|exitValue := value code.false])

            ifTrue:[exitValue := 0]    

    ] ensure: [

        extStdout close. extStderr close.

        stdout nextPutAll: extStdoutF contentsAsString.

        stderr nextPutAll: extStderrF contentsAsString.

        "Windows are really stupid!! Sometimes they lock files

         longer than needed. Even same process is not allowed

         to work with them. Sigh sigh sigh..."

        [ extStdoutF remove ] on: Error do:

            [Delay waitForMilliseconds: 10.

            [ extStdoutF remove ] on: Error do:

                [Delay waitForMilliseconds: 20.

                extStdoutF remove]].

        "Same for stderr"

        [ extStderrF remove ] on: Error do:

            [Delay waitForMilliseconds: 10.

            [ extStderrF remove ] on: Error do:

                [Delay waitForMilliseconds: 20.

                extStderrF remove]]]

    "Created: / 11-04-2010 / 12:50:57 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 04-09-2010 / 23:41:37 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!OSProcess class methodsFor:'documentation'!

version

    ^ '$Header$'

!

version_CVS

    ^ '$Header$'

!

version_SVN

    ^ '§Id: SVN__OSProcess.st 350 2011-07-07 18:42:56Z vranyj1 §'

! !