"

 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:#PackagePattern

	instanceVariableNames:'pattern patternComponents'

	classVariableNames:''

	poolDictionaries:''

	category:'SVN-Private'

!

!PackagePattern 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.

"

! !

!PackagePattern class methodsFor:'instance creation'!

for: aString

    ^self new setPattern: aString

    "Created: / 12-03-2011 / 20:59:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PackagePattern methodsFor:'initialization'!

setPattern:something

    pattern := something.

    self preProcess

    "Created: / 12-03-2011 / 20:58:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PackagePattern methodsFor:'matching'!

match: package into: replacements

    | packageComponents start replacementIndex replacementSize |

    "Ugly code warning. Q&D hack"

    packageComponents := (package copyReplaceAll: $: with: $/) tokensBasedOn: $/.

    start := 1.

    replacementIndex := 1.

    replacementSize := replacements size.

    1 to: patternComponents size do:

        [:i| 

        start := self matchAt: i into: replacements index: replacementIndex in: packageComponents from: start.

        replacementSize ~= replacements size ifTrue:

            [replacementIndex := replacementIndex + 1.

            replacementSize := replacements size].   

        start ifNil:[^false]].

    ^true.

    "Created: / 12-03-2011 / 21:21:50 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

matches: package

    ^self match: package into: nil.

    "Created: / 12-03-2011 / 21:20:11 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PackagePattern methodsFor:'private'!

matchAt: componentIdx into: replacements index: replacementIndex in: packageComponents from: start

    | component |

    component := patternComponents at: componentIdx.

    component ~= '*' ifTrue:[

        start > packageComponents size ifTrue:[^nil].

        (packageComponents at: start) = component

            ifTrue:[^start + 1]

            ifFalse:[^nil]

    ] ifFalse:[

        start > packageComponents size ifTrue:[

            componentIdx == patternComponents size ifTrue:[

                replacements ifNotNil:[

                replacements 

                    at: replacementIndex printString 

                    put: ''].

                ^start + 1

            ] ifFalse:[

                ^nil

            ]

        ].

        componentIdx == patternComponents size ifTrue:[

            replacements ifNotNil:[            

            replacements 

                at: replacementIndex printString 

                put: (packageComponents asStringWith:$/ from: start to: packageComponents size)].

            ^start + 1.   

        ] ifFalse:[

            | next i |

            next := packageComponents at: componentIdx + 1.

            i := packageComponents indexOf: next startingAt: start.

            i == 0 ifTrue:[^nil].

            replacements ifNotNil:[            

            replacements 

                at: replacementIndex printString 

                put: (packageComponents asStringWith:$/ from: start to: i - 1)].

            ^i.               

        ]        

    ]

    "Created: / 12-03-2011 / 21:49:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 13-03-2011 / 09:32:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

preProcess

    patternComponents := (pattern copyReplaceAll: $: with: $/) tokensBasedOn: $/.

    patternComponents first isEmpty ifTrue:[patternComponents removeFirst].

    patternComponents last  isEmpty ifTrue:[patternComponents removeLast].

    1 to: patternComponents size - 1 do:

        [:i| | c |

        c := patternComponents at: i.

        (c = '*' and:[(patternComponents at: i+1) = '*'])

            ifTrue:[self error:'Two consecutive stars may cause ambiguous match!!'].

        c isEmpty

            ifTrue:[self error:'Two consecutive slashes are not allowed!!'].                        

        (c ~= '*' and:[c includes: $*]) 

            ifTrue:[self error:'Mixed string/* matches not supported (yet)'].

        ]

    "Created: / 12-03-2011 / 21:04:59 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!PackagePattern class methodsFor:'documentation'!

version

    ^ '$Header$'

!

version_SVN

! !