1 | package com.ether; |
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2 | |
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3 | import org.apache.commons.lang.ArrayUtils; |
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4 | import org.jetbrains.annotations.NotNull; |
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5 | import org.jetbrains.annotations.Nullable; |
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6 | |
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7 | import java.io.BufferedWriter; |
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8 | import java.io.FileWriter; |
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9 | import java.io.IOException; |
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10 | import java.security.DigestException; |
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11 | import java.security.MessageDigest; |
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12 | import java.security.NoSuchAlgorithmException; |
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13 | import java.util.ArrayList; |
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14 | import java.util.List; |
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15 | import java.util.Random; |
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16 | |
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17 | /** |
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18 | * @author vmipsl |
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19 | * @date 09 sept. 2011 |
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20 | */ |
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21 | public abstract class EtherHelper |
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22 | { |
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23 | /** |
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24 | * This method returns the list with the firts values of a list of <Pair> |
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25 | * |
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26 | * @param pairList |
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27 | * @return |
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28 | */ |
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29 | @NotNull |
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30 | public static <T1, T2> List getFirstValues( @NotNull final List<Pair<T1, T2>> pairList ) |
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31 | { |
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32 | final List firstValues = new ArrayList<T1>( pairList.size() ); |
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33 | for( final Pair pair : pairList ) |
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34 | firstValues.add( pair.getFirstValue() ); |
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35 | |
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36 | return firstValues; |
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37 | } |
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38 | |
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39 | /** |
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40 | * This method returns the list with the second values of a list of <Pair> |
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41 | * |
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42 | * @param pairList |
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43 | * @return |
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44 | */ |
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45 | @NotNull |
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46 | public static <T1, T2> List getSecondValues( @NotNull final List<Pair<T1, T2>> pairList ) |
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47 | { |
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48 | final List secondValues = new ArrayList<T2>( pairList.size() ); |
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49 | for( final Pair pair : pairList ) |
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50 | secondValues.add( pair.getSecondValue() ); |
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51 | |
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52 | return secondValues; |
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53 | } |
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54 | |
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55 | public static double[] convertListDoubleToDoubleArray( @NotNull final List<Double> list ) |
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56 | { |
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57 | Double[] doubleArray = new Double[list.size()]; |
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58 | doubleArray = list.toArray( doubleArray ); |
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59 | return ArrayUtils.toPrimitive( doubleArray ); |
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60 | } |
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61 | |
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62 | @NotNull |
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63 | public static Integer getRandomBetweenTwoInteger( @NotNull final Integer minValue, @NotNull final Integer maxValue ) |
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64 | { |
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65 | final Random r = new Random(); |
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66 | return minValue + r.nextInt( maxValue - minValue ); |
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67 | } |
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68 | |
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69 | @NotNull |
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70 | public static Double getRandomBetweenTwoDouble( @NotNull final Double minValue, @NotNull final Double maxValue ) |
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71 | { |
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72 | final Random r = new Random(); |
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73 | final Double value = minValue + r.nextDouble(); |
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74 | if( value > maxValue ) |
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75 | return getRandomBetweenTwoDouble( minValue, maxValue ); |
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76 | else |
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77 | return value; |
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78 | } |
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79 | |
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80 | // TODO : supprimer cette méthode et utiliser JSON pour récupérer pIdPIdList |
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81 | @Nullable |
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82 | public static <T1 extends Object, T2 extends Object> List<Pair<T1, T2>> extractpfIdPIdListFromString( @NotNull final String pfIdPIdArrayString, @NotNull final Class<T1> T1Class, @NotNull final Class<T2> T2Class ) |
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83 | { |
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84 | if( pfIdPIdArrayString.isEmpty() ) |
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85 | return null; |
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86 | |
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87 | final String[] pfIDPIdArray = pfIdPIdArrayString.split( "," ); |
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88 | final List<Pair<T1, T2>> pfIdPIdList = new ArrayList<Pair<T1, T2>>( pfIDPIdArray.length ); |
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89 | for( final String pfIdPId : pfIDPIdArray ) |
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90 | { |
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91 | final String[] pfIdPIdSplit = pfIdPId.split( "-" ); |
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92 | final Pair<T1, T2> pfIdPIdPair = new Pair<T1, T2>(); |
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93 | if( T1Class.equals( String.class ) ) |
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94 | pfIdPIdPair.setFirstValue( (T1) pfIdPIdSplit[0] ); |
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95 | else |
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96 | pfIdPIdPair.setFirstValue( (T1) Integer.valueOf( pfIdPIdSplit[0] ) ); |
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97 | |
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98 | if( T2Class.equals( String.class ) ) |
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99 | pfIdPIdPair.setSecondValue( (T2) pfIdPIdSplit[1] ); |
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100 | else |
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101 | pfIdPIdPair.setSecondValue( (T2) Integer.valueOf( pfIdPIdSplit[1] ) ); |
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102 | pfIdPIdList.add( pfIdPIdPair ); |
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103 | } |
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104 | return pfIdPIdList; |
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105 | } |
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106 | |
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107 | /** |
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108 | * This method writes the text into the file filePath |
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109 | * |
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110 | * @param filePath |
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111 | * @param text |
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112 | */ |
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113 | public static void writeInFile( @NotNull final String filePath, @NotNull final String text ) |
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114 | { |
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115 | try |
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116 | { |
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117 | final FileWriter fw = new FileWriter( filePath, true ); |
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118 | final BufferedWriter output = new BufferedWriter( fw ); |
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119 | output.write( text ); |
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120 | output.flush(); |
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121 | output.close(); |
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122 | } |
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123 | catch( IOException ioe ) |
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124 | { |
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125 | ioe.printStackTrace(); |
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126 | } |
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127 | |
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128 | } |
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129 | |
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130 | /** |
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131 | * This method rounded a value with 'n' number after comma |
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132 | * |
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133 | * @param value : the value to convert |
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134 | * @param numberOfDecimals : the number of decimals after the comma |
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135 | * @return the rounding value |
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136 | */ |
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137 | public static Double floor( final Double value, final int numberOfDecimals ) |
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138 | { |
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139 | final Double powValue = Math.pow( 10.0, numberOfDecimals ); |
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140 | return Math.floor( ( value * powValue ) + 0.5 ) / powValue; |
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141 | } |
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142 | |
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143 | |
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144 | /** |
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145 | * Returns the specified String as an encrypted hash |
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146 | * |
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147 | * @param stringToEncrypt |
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148 | * @return |
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149 | */ |
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150 | @NotNull |
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151 | public static byte[] encryptStringToHash( @NotNull final String stringToEncrypt ) |
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152 | throws DigestException, NoSuchAlgorithmException |
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153 | { |
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154 | final byte[] input = stringToEncrypt.getBytes(); |
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155 | final MessageDigest digest = MessageDigest.getInstance( "SHA-1" ); |
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156 | digest.update( input, 0, input.length ); |
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157 | final int hashLength = 20; // SHA-1 donne un hash de longueur 20 |
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158 | final byte[] hash = new byte[hashLength]; |
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159 | digest.digest( hash, 0, hashLength ); |
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160 | return hash; |
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161 | } |
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162 | |
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163 | /** |
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164 | * Returns the specified bytes array hash as a String |
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165 | * |
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166 | * @param encryptedHash the hash as a bytes array |
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167 | * @return the hash as a String |
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168 | */ |
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169 | @NotNull |
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170 | public static String displayEncryptedHash( @NotNull final byte[] encryptedHash ) |
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171 | { |
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172 | final StringBuilder stringBuilder = new StringBuilder(); |
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173 | for( final byte aHash : encryptedHash ) |
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174 | { |
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175 | final int v = aHash & 0xFF; |
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176 | if( v < 16 ) |
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177 | stringBuilder.append( '0' ); |
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178 | |
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179 | stringBuilder.append( Integer.toString( v, 16 ) ); |
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180 | } |
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181 | return stringBuilder.toString(); |
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182 | } |
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183 | |
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184 | /** |
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185 | * This method creates a encrypted password with SHA-1 hash |
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186 | * |
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187 | * @param password |
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188 | * @return |
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189 | */ |
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190 | @NotNull |
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191 | public static String encryptPassword( @NotNull final String password ) |
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192 | throws DigestException, NoSuchAlgorithmException |
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193 | { |
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194 | final byte[] sHAPassword = EtherHelper.encryptStringToHash( password ); |
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195 | return EtherHelper.displayEncryptedHash( sHAPassword ); |
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196 | } |
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197 | |
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198 | } |
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