doublemetaphone.java

android开发入门与实践源代码

            return index + 2;
        } else if (conditionCH1(value, index)) {
            //-- Germanic, Greek, or otherwise 'ch' for 'kh' sound --//
            result.append('K');
            return index + 2;
        } else {
            if (index > 0) {
                if (contains(value, 0, 2, "MC")) {
                    result.append('K');
                } else {
                    result.append('X', 'K');
                }
            } else {
                result.append('X');
            }
            return index + 2;
        }
    }

    /**
     * Handles 'D' cases
     */
    private int handleD(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        if (contains(value, index, 2, "DG")) {
            //-- "Edge" --//
            if (contains(value, index + 2, 1, "I", "E", "Y")) {
                result.append('J');
                index += 3;
                //-- "Edgar" --//
            } else {
                result.append("TK");
                index += 2;
            }
        } else if (contains(value, index, 2, "DT", "DD")) {
            result.append('T');
            index += 2;
        } else {
            result.append('T');
            index++;
        }
        return index;
    }

    /**
     * Handles 'G' cases
     */
    private int handleG(String value, 
                        DoubleMetaphoneResult result, 
                        int index, 
                        boolean slavoGermanic) {
        if (charAt(value, index + 1) == 'H') {
            index = handleGH(value, result, index);
        } else if (charAt(value, index + 1) == 'N') {
            if (index == 1 && isVowel(charAt(value, 0)) && !slavoGermanic) {
                result.append("KN", "N");
            } else if (!contains(value, index + 2, 2, "EY") && 
                       charAt(value, index + 1) != 'Y' && !slavoGermanic) {
                result.append("N", "KN");
            } else {
                result.append("KN");
            }
            index = index + 2;
        } else if (contains(value, index + 1, 2, "LI") && !slavoGermanic) {
            result.append("KL", "L");
            index += 2;
        } else if (index == 0 && (charAt(value, index + 1) == 'Y' || contains(value, index + 1, 2, ES_EP_EB_EL_EY_IB_IL_IN_IE_EI_ER))) {
            //-- -ges-, -gep-, -gel-, -gie- at beginning --//
            result.append('K', 'J');
            index += 2;
        } else if ((contains(value, index + 1, 2, "ER") || 
                    charAt(value, index + 1) == 'Y') &&
                   !contains(value, 0, 6, "DANGER", "RANGER", "MANGER") &&
                   !contains(value, index - 1, 1, "E", "I") && 
                   !contains(value, index - 1, 3, "RGY", "OGY")) {
            //-- -ger-, -gy- --//
            result.append('K', 'J');
            index += 2;
        } else if (contains(value, index + 1, 1, "E", "I", "Y") || 
                   contains(value, index - 1, 4, "AGGI", "OGGI")) {
            //-- Italian "biaggi" --//
            if ((contains(value, 0 ,4, "VAN ", "VON ") || contains(value, 0, 3, "SCH")) || contains(value, index + 1, 2, "ET")) {
                //-- obvious germanic --//
                result.append('K');
            } else if (contains(value, index + 1, 4, "IER")) {
                result.append('J');
            } else {
                result.append('J', 'K');
            }
            index += 2;
        } else if (charAt(value, index + 1) == 'G') {
            index += 2;
            result.append('K');
        } else {
            index++;
            result.append('K');
        }
        return index;
    }
    
    /**
     * Handles 'GH' cases
     */
    private int handleGH(String value, 
                         DoubleMetaphoneResult result, 
                         int index) {
        if (index > 0 && !isVowel(charAt(value, index - 1))) {
            result.append('K');
            index += 2;
        } else if (index == 0) {
            if (charAt(value, index + 2) == 'I') {
                result.append('J');
            } else {
                result.append('K');
            }
            index += 2;
        } else if ((index > 1 && contains(value, index - 2, 1, "B", "H", "D")) ||
                   (index > 2 && contains(value, index - 3, 1, "B", "H", "D")) ||
                   (index > 3 && contains(value, index - 4, 1, "B", "H"))) {
            //-- Parker's rule (with some further refinements) - "hugh"
            index += 2;
        } else {
            if (index > 2 && charAt(value, index - 1) == 'U' && 
                contains(value, index - 3, 1, "C", "G", "L", "R", "T")) {
                //-- "laugh", "McLaughlin", "cough", "gough", "rough", "tough"
                result.append('F');
            } else if (index > 0 && charAt(value, index - 1) != 'I') {
                result.append('K');
            }
            index += 2;
        }
        return index;
    }

    /**
     * Handles 'H' cases
     */
    private int handleH(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        //-- only keep if first & before vowel or between 2 vowels --//
        if ((index == 0 || isVowel(charAt(value, index - 1))) && 
            isVowel(charAt(value, index + 1))) {
            result.append('H');
            index += 2;
            //-- also takes car of "HH" --//
        } else {
            index++;
        }
        return index;
    }
    
    /**
     * Handles 'J' cases
     */
    private int handleJ(String value, DoubleMetaphoneResult result, int index, 
                        boolean slavoGermanic) {
        if (contains(value, index, 4, "JOSE") || contains(value, 0, 4, "SAN ")) {
                //-- obvious Spanish, "Jose", "San Jacinto" --//
                if ((index == 0 && (charAt(value, index + 4) == ' ') || 
                     value.length() == 4) || contains(value, 0, 4, "SAN ")) {
                    result.append('H');
                } else {
                    result.append('J', 'H');
                }
                index++;
            } else {
                if (index == 0 && !contains(value, index, 4, "JOSE")) {
                    result.append('J', 'A');
                } else if (isVowel(charAt(value, index - 1)) && !slavoGermanic && 
                              (charAt(value, index + 1) == 'A' || charAt(value, index + 1) == 'O')) {
                    result.append('J', 'H');
                } else if (index == value.length() - 1) {
                    result.append('J', ' ');
                } else if (!contains(value, index + 1, 1, L_T_K_S_N_M_B_Z) && !contains(value, index - 1, 1, "S", "K", "L")) {
                    result.append('J');
                }

                if (charAt(value, index + 1) == 'J') {
                    index += 2;
                } else {
                    index++;
                }
            }
        return index;
    }
    
    /**
     * Handles 'L' cases
     */
    private int handleL(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        result.append('L');
        if (charAt(value, index + 1) == 'L') {
            if (conditionL0(value, index)) {
                result.appendAlternate(' ');
            }
            index += 2;
        } else {
            index++;
        }
        return index;
    }

    /**
     * Handles 'P' cases
     */
    private int handleP(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        if (charAt(value, index + 1) == 'H') {
            result.append('F');
            index += 2;
        } else {
            result.append('P');
            index = contains(value, index + 1, 1, "P", "B") ? index + 2 : index + 1;
        }
        return index;
    }

    /**
     * Handles 'R' cases
     */
    private int handleR(String value, 
                        DoubleMetaphoneResult result, 
                        int index, 
                        boolean slavoGermanic) {
        if (index == value.length() - 1 && !slavoGermanic && 
            contains(value, index - 2, 2, "IE") && 
            !contains(value, index - 4, 2, "ME", "MA")) {
            result.appendAlternate('R');
        } else {
            result.append('R');
        }
        return charAt(value, index + 1) == 'R' ? index + 2 : index + 1;
    }

    /**
     * Handles 'S' cases
     */
    private int handleS(String value, 
                        DoubleMetaphoneResult result, 
                        int index, 
                        boolean slavoGermanic) {
        if (contains(value, index - 1, 3, "ISL", "YSL")) {
            //-- special cases "island", "isle", "carlisle", "carlysle" --//
            index++;
        } else if (index == 0 && contains(value, index, 5, "SUGAR")) {
            //-- special case "sugar-" --//
            result.append('X', 'S');
            index++;
        } else if (contains(value, index, 2, "SH")) {
            if (contains(value, index + 1, 4, 
                         "HEIM", "HOEK", "HOLM", "HOLZ")) {
                //-- germanic --//
                result.append('S');
            } else {
                result.append('X');
            }
            index += 2;
        } else if (contains(value, index, 3, "SIO", "SIA") || contains(value, index, 4, "SIAN")) {
            //-- Italian and Armenian --//
            if (slavoGermanic) {
                result.append('S');
            } else {
                result.append('S', 'X');
            }
            index += 3;
        } else if ((index == 0 && contains(value, index + 1, 1, "M", "N", "L", "W")) || contains(value, index + 1, 1, "Z")) {
            //-- german & anglicisations, e.g. "smith" match "schmidt" //
            // "snider" match "schneider" --//
            //-- also, -sz- in slavic language altho in hungarian it //
            //   is pronounced "s" --//
            result.append('S', 'X');
            index = contains(value, index + 1, 1, "Z") ? index + 2 : index + 1;
        } else if (contains(value, index, 2, "SC")) {
            index = handleSC(value, result, index);
        } else {
            if (index == value.length() - 1 && contains(value, index - 2, 
                                                        2, "AI", "OI")){
                //-- french e.g. "resnais", "artois" --//
                result.appendAlternate('S');
            } else {
                result.append('S');
            }
            index = contains(value, index + 1, 1, "S", "Z") ? index + 2 : index + 1;
        }
        return index;
    }

    /**
     * Handles 'SC' cases
     */
    private int handleSC(String value, 
                         DoubleMetaphoneResult result, 
                         int index) {
        if (charAt(value, index + 2) == 'H') {
            //-- Schlesinger's rule --//
            if (contains(value, index + 3, 
                         2, "OO", "ER", "EN", "UY", "ED", "EM")) {
                //-- Dutch origin, e.g. "school", "schooner" --//
                if (contains(value, index + 3, 2, "ER", "EN")) {
                    //-- "schermerhorn", "schenker" --//
                    result.append("X", "SK");
                } else {
                    result.append("SK");
                }
            } else {
                if (index == 0 && !isVowel(charAt(value, 3)) && charAt(value, 3) != 'W') {
                    result.append('X', 'S');
                } else {
                    result.append('X');
                }
            }
        } else if (contains(value, index + 2, 1, "I", "E", "Y")) {
            result.append('S');
        } else {
            result.append("SK");
        }
        return index + 3;
    }

    /**
     * Handles 'T' cases
     */
    private int handleT(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        if (contains(value, index, 4, "TION")) {
            result.append('X');
            index += 3;
        } else if (contains(value, index, 3, "TIA", "TCH")) {
            result.append('X');
            index += 3;
        } else if (contains(value, index, 2, "TH") || contains(value, index, 
                                                               3, "TTH")) {
            if (contains(value, index + 2, 2, "OM", "AM") || 
                //-- special case "thomas", "thames" or germanic --//
                contains(value, 0, 4, "VAN ", "VON ") || 
                contains(value, 0, 3, "SCH")) {
                result.append('T');
            } else {
                result.append('0', 'T');
            }
            index += 2;
        } else {
            result.append('T');
            index = contains(value, index + 1, 1, "T", "D") ? index + 2 : index + 1;
        }
        return index;
    }

    /**
     * Handles 'W' cases
     */
    private int handleW(String value, 
                        DoubleMetaphoneResult result, 
                        int index) {
        if (contains(value, index, 2, "WR")) {
            //-- can also be in middle of word --//
            result.append('R');
            index += 2;
        } else {
            if (index == 0 && (isVowel(charAt(value, index + 1)) || 
                               contains(value, index, 2, "WH"))) {
                if (isVowel(charAt(value, index + 1))) {