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RosettaCodeData/Task/Execute-a-Markov-algorithm/AutoHotkey/execute-a-markov-algorithm.ahk

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;---------------------------------------------------------------------------
; Markov Algorithm.ahk
; by wolf_II
;---------------------------------------------------------------------------
; interpreter for a Markov Algorithm
;---------------------------------------------------------------------------
;---------------------------------------------------------------------------
AutoExecute: ; auto-execute section of the script
;---------------------------------------------------------------------------
#SingleInstance, Force ; only one instance allowed
#NoEnv ; don't check empty variables
StartupDir := A_WorkingDir ; remember startup directory
SetWorkingDir, %A_ScriptDir% ; change directoy
StringCaseSense, On ; case sensitive comparisons
;-----------------------------------------------------------------------
AppName := "Markov Algorithm"
Gosub, GuiCreate
Gui, Show,, %AppName%
Return
;---------------------------------------------------------------------------
GuiCreate: ; create the GUI
;---------------------------------------------------------------------------
; GUI options
Gui, -MinimizeBox
Gui, Add, Edit, y0 h0 ; catch the focus
; Ruleset
Gui, Add, GroupBox, w445 h145 Section, Ruleset
Gui, Add, Edit, xs+15 ys+20 w300 r8 vRuleset
Gui, Add, Button, x+15 w100, Load Ruleset
Gui, Add, Button, wp, Save Ruleset
Gui, Add, Button, w30, 1
Gui, Add, Button, x+5 wp, 2
Gui, Add, Button, x+5 wp, 3
Gui, Add, Button, xs+330 y+6 wp, 4
Gui, Add, Button, x+5 wp, 5
; String
Gui, Add, GroupBox, xs w445 h75 Section, String
Gui, Add, Edit, xs+15 ys+20 w300 vString
Gui, Add, Button, x+15 w100, Apply Ruleset
Gui, Add, Button, xp wp Hidden, Stop
Gui, Add, CheckBox, xs+15 yp+30 vSingleStepping, Single Stepping?
; Output
Gui, Add, GroupBox, xs w445 h235 Section, Output
Gui, Add, Edit, xs+15 ys+20 w415 r15 ReadOnly vOutput HwndhOut
Return
;---------------------------------------------------------------------------
GuiClose:
;---------------------------------------------------------------------------
ExitApp
Return
;---------------------------------------------------------------------------
ButtonLoadRuleset: ; load ruleset from file
;---------------------------------------------------------------------------
Gui, +OwnDialogs
FileSelectFile, RulesetFile,,, Load Ruleset, *.markov
If Not SubStr(RulesetFile, -6) = ".markov"
RulesetFile .= ".markov"
If FileExist(RulesetFile) {
FileRead, Ruleset, %RulesetFile%
GuiControl,, Ruleset, %Ruleset%
} Else
MsgBox, 16, Error - %AppName%, File not found:`n`n"%RulesetFile%"
Return
;---------------------------------------------------------------------------
ButtonSaveRuleset: ; save ruleset to file
;---------------------------------------------------------------------------
Gui, +OwnDialogs
Gui, Submit, NoHide
FileSelectFile, RulesetFile, S16,, Save Ruleset, *.markov
If Not SubStr(RulesetFile, -6) = ".markov"
RulesetFile .= ".markov"
FileDelete, %RulesetFile%
FileAppend, %Ruleset%, %RulesetFile%
Gui, Show
Return
_
;---------------------------------------------------------------------------
Button1: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm#Ruleset_1
;---------------------------------------------------------------------------
GuiControl,, Output ; clear output
GuiControl,, String, I bought a B of As from T S.
GuiControl,, Ruleset,
(LTrim
# This rules file is extracted from Wikipedia:
# http://en.wikipedia.org/wiki/Markov_Algorithm
A -> apple
B -> bag
S -> shop
T -> the
the shop -> my brother
a never used -> .terminating rule
)
Return
;---------------------------------------------------------------------------
Button2: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm#Ruleset_2
;---------------------------------------------------------------------------
GuiControl,, Output ; clear output
GuiControl,, String, I bought a B of As from T S.
GuiControl,, Ruleset,
(LTrim
# Slightly modified from the rules on Wikipedia
A -> apple
B -> bag
S -> .shop
T -> the
the shop -> my brother
a never used -> .terminating rule
)
Return
;---------------------------------------------------------------------------
Button3: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm#Ruleset_3
;---------------------------------------------------------------------------
GuiControl,, Output ; clear output
GuiControl,, String, I bought a B of As W my Bgage from T S.
GuiControl,, Ruleset,
(LTrim
# BNF Syntax testing rules
A -> apple
WWWW -> with
Bgage -> ->.*
B -> bag
->.* -> money
W -> WW
S -> .shop
T -> the
the shop -> my brother
a never used -> .terminating rule
)
Return
;---------------------------------------------------------------------------
Button4: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm#Ruleset_4
;---------------------------------------------------------------------------
GuiControl,, Output ; clear output
GuiControl,, String, _1111*11111_
GuiControl,, Ruleset,
(LTrim
### Unary Multiplication Engine, for testing Markov Algorithm implementations
### By Donal Fellows.
# Unary addition engine
_+1 -> _1+
1+1 -> 11+
# Pass for converting from the splitting of multiplication into ordinary
# addition
1! -> !1
,! -> !+
_! -> _
# Unary multiplication by duplicating left side, right side times
1*1 -> x,@y
1x -> xX
X, -> 1,1
X1 -> 1X
_x -> _X
,x -> ,X
y1 -> 1y
y_ -> _
# Next phase of applying
1@1 -> x,@y
1@_ -> @_
,@_ -> !_
++ -> +
# Termination cleanup for addition
_1 -> 1
1+_ -> 1
_+_ ->
)
Return
;---------------------------------------------------------------------------
Button5: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm#Ruleset_5
;---------------------------------------------------------------------------
GuiControl,, Output ; clear output
GuiControl,, String, 000000A000000
GuiControl,, Ruleset,
(LTrim
# Turing machine: three-state busy beaver
#
# state A, symbol 0 => write 1, move right, new state B
A0 -> 1B
# state A, symbol 1 => write 1, move left, new state C
0A1 -> C01
1A1 -> C11
# state B, symbol 0 => write 1, move left, new state A
0B0 -> A01
1B0 -> A11
# state B, symbol 1 => write 1, move right, new state B
B1 -> 1B
# state C, symbol 0 => write 1, move left, new state B
0C0 -> B01
1C0 -> B11
# state C, symbol 1 => write 1, move left, halt
0C1 -> H01
1C1 -> H11
)
Return
;---------------------------------------------------------------------------
ButtonApplyRuleset: ; flow control for Algorithm
;---------------------------------------------------------------------------
; prepare
Gui, Submit, NoHide
GuiControl,, Output ; clear
Controls(False) ; disable
Count := 0
Subst := True
Stop := False
; keep substituting for as long as necessary
While, Subst {
Subst := False ; reset control variable
IfEqual, Stop, 1, Break
Gosub, Algorithm
}
; clean up
Output("Substitution count: " Count)
Controls(True) ; re-enable
Return
;---------------------------------------------------------------------------
ButtonStop: ; this button is initially hidden
;---------------------------------------------------------------------------
Stop := True
Return
;---------------------------------------------------------------------------
Algorithm: ; http://rosettacode.org/wiki/Execute_a_Markov_algorithm
;---------------------------------------------------------------------------
; Parse the ruleset and apply each rule to the string. Whenever a rule
; has changed the string goto first rule. Continue until a encountering
; a terminating rule, or until no further changes to the strings are
; made.
;-----------------------------------------------------------------------
Loop, Parse, Ruleset, `n, `r ; always start from the beginning
{
; check for comment
If SubStr(A_LoopField, 1, 1) = "#"
Continue ; get next line
; split a rule into $Search, $Terminator and $Replace
LookFor := "(?P<Search>.+) -> (?P<Terminator>\.?)(?P<Replace>.+)"
RegExMatch(A_LoopField, LookFor, $)
; single stepping through possible substitutions
If SingleStepping
MsgBox,, %AppName%, % ""
. "Rule = """ A_LoopField """`n`n"
. "Search`t= """ $Search """`n"
. "Replace`t= """ $Replace """`n"
. "Termintor`t= """ ($Terminator ? "True" : "False") """`n"
; try to substitute
StringReplace, String, String, %$Search%, %$Replace%, UseErrorLevel
; any success?
If ErrorLevel { ; yes, substitution done
Count++ ; keep count
Subst := True ; set control variable
Output(String) ; write new string to output
}
; terminate?
If $Terminator { ; yes, terminate
Stop := True ; set control variable
Break ; back to flow control
}
; we are not yet terminated ...
If Subst ; but we just did a substitution
Break ; back to flow control
}
Return
;---------------------------------------------------------------------------
Controls(Bool) { ; [en|dis]able controls
;---------------------------------------------------------------------------
Enable := Bool ? "+" : "-"
Disable := Bool ? "-" : "+"
Loop, 2
GuiControl, %Disable%ReadOnly, % "Edit" A_Index + 1
Loop, 7
GuiControl, %Disable%Disabled, % "Button" A_Index + 1
GuiControl, %Disable%Disabled, Edit4
GuiControl, %Disable%Hidden, Button10
GuiControl, %Enable%Hidden, Button11
GuiControl, %Disable%Disabled, Button12
}
;---------------------------------------------------------------------------
Output(Text) { ; append text to output
;---------------------------------------------------------------------------
static EM_REPLACESEL = 0xC2
global hOut
Sleep, 100
Text .= "`r`n"
SendMessage, EM_REPLACESEL,, &Text,, ahk_id %hOut%
}
;---------- end of file ----------------------------------------------------
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