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| ;********************************* ; Module: PunyCode ; Author: void ; Compiler: PB531 ; Ver: 001 ; PunyCode encode\decode ; Compyle options -> Unicode ;********************************* DeclareModule PUNYCODE EnableExplicit ;** ;* Punycodes a unicode string. ;* ;* @param input Unicode string. ;* @return Punycoded string. ;** Declare.s encode(input$) ;** ;* Decode a punycoded string. ;* ;* @param input Punycode string ;* @return Unicode string. ;** Declare.s decode(input$) EndDeclareModule Module PUNYCODE EnableExplicit ;{ Constants #TMIN = 1 #TMAX = 26 #BASE = 36 #INITIAL_N = 128 #INITIAL_BIAS = 72 #DAMP = 700 #SKEW = 38 #DELIMITER$ = "-" #MAX_VALUE = 2147483647 ;} ;{ Tools Procedure.l adapt(delta.l, numpoints.l, first.l) If first delta / #DAMP Else delta / 2 EndIf delta + (delta / numpoints) Protected k.l = 0 While (delta > ((#BASE - #TMIN) * #TMAX) / 2) delta / (#BASE - #TMIN) k + #BASE Wend ProcedureReturn k + ((#BASE - #TMIN + 1) * delta) / (delta + #SKEW) EndProcedure Procedure.l isBasic(char$) ProcedureReturn Bool(Asc(char$) < $80) EndProcedure Procedure.s digit2codepoint(d.l) If (d < 26) ; 0..25 : 'a'..'z' ProcedureReturn Chr(d + 'a') ElseIf (d < 36) ; 26..35 : '0'..'9' ProcedureReturn Chr(d - 26 + '0') Else Debug"BAD_INPUT" CallDebugger EndIf EndProcedure Procedure.l codepoint2digit(c.l) If (c - '0' < 10) ; '0'..'9' : 26..35 ProcedureReturn c - '0' + 26 ElseIf (c - 'a' < 26) ; 'a'..'z' : 0..25 ProcedureReturn c - 'a' Else Debug"BAD_INPUT" CallDebugger EndIf EndProcedure ;} ;{ Main ;** ;* Punycodes a unicode string. ;* ;* @param input Unicode string. ;* @return Punycoded string. ;** Procedure.s encode(input$) Protected n.l = #INITIAL_N Protected delta.l = 0 Protected bias.l = #INITIAL_BIAS Protected output$ = "" ; Copy all basic code points To the output Protected b.l, i.l For i=1 To Len(input$) Protected char$ = Mid(input$, i, 1) If isBasic(char$) output$ + char$ b + 1 EndIf Next ; Append delimiter If b > 0 output$ + #DELIMITER$ EndIf Protected h.l = b While h < Len(input$) Protected m.l = #MAX_VALUE ; Find the minimum code point >= n For i=1 To Len(input$) Protected cmin.l = Asc(Mid(input$, i, 1)) If (cmin >= n And cmin < m) m = cmin EndIf Next If (m - n > (#MAX_VALUE - delta) / (h + 1)) Debug "OVERFLOW" CallDebugger ProcedureReturn "" EndIf delta + (m - n) * (h + 1) n = m Protected j.l For j=1 To Len(input$) Protected c.l = Asc(Mid(input$, j, 1)) If (c < n) delta + 1 If delta = 0 Debug "OVERFLOW" CallDebugger ProcedureReturn "" EndIf EndIf If (c = n) Protected q.l, k.l q = delta For k = #BASE To #MAX_VALUE Step #BASE Protected t.l If (k <= bias) t = #TMIN ElseIf (k >= bias + #TMAX) t = #TMAX Else t = k - bias EndIf If (q < t) Break EndIf output$ + digit2codepoint(t + (q - t) % (#BASE - t)) q = (q - t) / (#BASE - t) Next output$ + digit2codepoint(q) bias = adapt(delta, h + 1, Bool(h = b)) delta = 0 h + 1 EndIf Next delta + 1 n + 1 Wend ProcedureReturn output$ EndProcedure ;** ;* Decode a punycoded string. ;* ;* @param input Punycode string ;* @return Unicode string. ;** Procedure.s decode(input$) Protected n.l = #INITIAL_N Protected i.l = 0 Protected bias.l = #INITIAL_BIAS Protected output$ = "" Protected j.l, d.l, dc.l dc = CountString(input$,#DELIMITER$) For j = 1 To dc d = FindString(input$,#DELIMITER$,d+1,#PB_String_NoCase) Next d-1 If d > 0 For j = 1 To d Protected char$ = Mid(input$,j,1) If Not isBasic(char$) Debug "BAD_INPUT" CallDebugger ProcedureReturn "" EndIf output$ + char$ Next d + 1 Else d = 0 EndIf While d < Len(input$) Protected oldi.l = i Protected w.l = 1 Protected k.l For k = #BASE To #MAX_VALUE Step #BASE If (d = Len(input$)) Debug "BAD_INPUT" CallDebugger ProcedureReturn "" EndIf Protected c.l = Asc(Mid(input$,d+1,1)) d + 1 Protected digit.l = codepoint2digit(c) If (digit > (#MAX_VALUE - i) / w) Debug "OVERFLOW" CallDebugger ProcedureReturn "" EndIf i + digit * w Protected t.l If (k <= bias) t = #TMIN ElseIf (k >= bias + #TMAX) t = #TMAX Else t = k - bias; EndIf If (digit < t) Break; EndIf w * (#BASE - t); Next bias = adapt(i-oldi, Len(output$)+1, Bool(oldi=0)); If (i / (Len(output$) + 1) > #MAX_VALUE - n) Debug "OVERFLOW" CallDebugger ProcedureReturn "" EndIf n + i / (Len(output$) + 1) i % (Len(output$) + 1) output$ = InsertString(output$,Chr(n),i+1) i+1 Wend ProcedureReturn output$ EndProcedure ;} EndModule ;Test Module CompilerIf #PB_Compiler_IsMainFile CompilerIf Not #PB_Compiler_Unicode Debug "WARNING!!! Unicode options isn't set." End CompilerEndIf ;{ Test Define a$, b$, c$ a$="почемужеонинеговорятпорусски" b$=PUNYCODE::encode(a$) c$=PUNYCODE::decode(b$) Debug a$ Debug b$ Debug "b1abfaaepdrnnbgefbadotcwatmq2g4l" Debug c$ a$="ttt-почемужеонинеговорятпорусски-www" b$=PUNYCODE::encode(a$) c$=PUNYCODE::decode(b$) Debug a$ Debug b$ Debug c$ ;} CompilerEndIf |