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1 NAME
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2 TextUtil
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3
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4 SYNOPSIS
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5 use TextUtil;
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6
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7 use TextUtil qw(:all);
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8
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9 DESCRIPTION
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10 TextUtil module provides the following functions:
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11
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12 AddNumberSuffix, ContainsWhiteSpaces, GetTextFileDataByNonUniqueKey,
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13 GetTextFileDataByUniqueKey, GetTextLine, HashCode, IsEmpty, IsFloat,
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14 IsInteger, IsNotEmpty, IsNumberPowerOfNumber, IsNumerical,
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15 IsPositiveInteger, JoinWords, QuoteAWord,
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16 RemoveLeadingAndTrailingWhiteSpaces, RemoveLeadingWhiteSpaces,
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17 RemoveTrailingWhiteSpaces, SplitWords, WrapText
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18
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19 FUNCTIONS
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20 AddNumberSuffix
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21 $NumberWithSuffix = AddNumberSuffix($IntegerValue);
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22
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23 Returns number with appropriate suffix: 0, 1st, 2nd, 3rd, 4th, and
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24 so on.
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25
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26 ContainsWhiteSpaces
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27 $Status = ContainsWhiteSpaces($TheString);
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28
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29 Returns 1 or 0 based on whether the string contains any white
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30 spaces.
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31
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32 GetTextLine
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33 $Line = GetTextLine(\*TEXTFILE);
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34
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35 Reads next line from an already opened text file, takes out any
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36 carriage return, and returns it as a string. NULL is returned for
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37 EOF.
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38
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39 GetTextFileDataByNonUniqueKey
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40 GetTextFileDataByNonUniqueKey($TextDataFile, $TextDataMapRef,
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41 $DataKeyColNum, $InDelim);
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42
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43 Load data from a text file into the specified hash reference using a
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44 specific column for non-unique data key values.
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45
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46 The lines starting with # are treated as comments and ignored. First
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47 line not starting with # must contain column labels and the number
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48 of columns in all other data rows must match the number of column
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49 labels.
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50
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51 The first column is assumed to contain data key value by default;
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52 all other columns contain data as indicated in their column labels.
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53
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54 In order to avoid dependence of data access on the specified column
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55 labels, the column data is loaded into hash with Column<Num> hash
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56 keys, where column number start from 1. The data key column is not
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57 available as Colnum<Num> hash key;
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58
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59 The format of the data structure loaded into a specified hash
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60 reference is:
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61
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62 @{$TextDataMapRef->{DataKeys}} - Array of unique data keys
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63 @{$TextDataMapRef->{ColLabels}} - Array of column labels
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64 @{$TextDataMapRef->{DataColIDs}} - Array of data column IDs
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65 $TextDataMapRef->{NumOfCols} - Number of columns
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66 %{$TextDataMapRef->{DataKey}} - Hash keys pair: <DataKey, DataKey>
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67 @{$TextDataMapRef->{DataCol<Num>}} - Hash keys pair with data as an array:
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68 <DataCol<Num>, DataKey>
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69
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70 GetTextFileDataByUniqueKey
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71 GetTextFileDataByUniqueKey($TextDataFile, $TextDataMapRef, $DataKeyColNum,
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72 $InDelim);
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73
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74 Load data from a text file into the specified hash reference using a
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75 a specific column for unique data key values.
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76
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77 The lines starting with # are treated as comments and ignored. First
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78 line not starting with # must contain column labels and the number
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79 of columns in all other data rows must match the number of column
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80 labels.
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81
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82 The first column is assumed to contain data key value by default;
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83 all other columns contain data as indicated in their column labels.
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84
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85 In order to avoid dependence of data access on the specified column
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86 labels, the column data is loaded into hash with Column<Num> hash
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87 keys, where column number start from 1. The data key column is not
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88 available as Colnum<Num> hash key;
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89
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90 The format of the data structure loaded into a specified hash
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91 reference is:
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92
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93 @{$TextDataMapRef->{DataKeys}} - Array of unique data keys
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94 @{$TextDataMapRef->{ColLabels}} - Array of column labels
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95 @{$TextDataMapRef->{DataColIDs}} - Array of data column IDs
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96 $TextDataMapRef->{NumOfCols} - Number of columns
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97 %{$TextDataMapRef->{DataKey}} - Hash keys pair: <DataKey, DataKey>
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98 %{$TextDataMapRef->{DataCol<Num>}} - Hash keys pair: <DataCol<Num>, DataKey>
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99
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100 HashCode
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101 $HashCode = HashCode($TheString);
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102
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103 Returns a 32 bit integer hash code using One-at-a-time algorithm By
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104 Bob Jenkins [Ref 38]. It's also implemented in Perl for internal
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105 hash keys in hv.h include file.
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106
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107 IsEmpty
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108 $Status = IsEmpty($TheString);
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109
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110 Returns 1 or 0 based on whether the string is empty.
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111
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112 IsInteger
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113 $Status = IsInteger($TheString);
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114
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115 Returns 1 or 0 based on whether the string is a positive integer.
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116
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117 IsPositiveInteger
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118 $Status = IsPositiveInteger($TheString);
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119
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120 Returns 1 or 0 based on whether the string is an integer.
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121
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122 IsFloat
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123 $Status = IsFloat($TheString);
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124
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125 Returns 1 or 0 based on whether the string is a float.
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126
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127 IsNotEmpty
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128 $Status = IsNotEmpty($TheString);
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129
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130 Returns 0 or 1 based on whether the string is empty.
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131
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132 IsNumerical
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133 $Status = IsNumerical($TheString);
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134
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135 Returns 1 or 0 based on whether the string is a number.
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136
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137 IsNumberPowerOfNumber
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138 $Status = IsNumberPowerOfNumber($FirstNum, $SecondNum);
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139
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140 Returns 1 or 0 based on whether the first number is a power of
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141 second number.
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142
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143 JoinWords
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144 $JoinedWords = JoinWords($Words, $Delim, $Quote);
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145
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146 Joins different words using delimiter and quote parameters, and
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147 returns it as a string.
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148
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149 QuoteAWord
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150 $QuotedWord = QuoteAWord($Word, $Quote);
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151
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152 Returns a quoted string based on *Quote* value.
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153
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154 RemoveLeadingWhiteSpaces
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155 $OutString = RemoveLeadingWhiteSpaces($InString);
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156
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157 Returns a string without any leading and traling white spaces.
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158
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159 RemoveTrailingWhiteSpaces
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160 $OutString = RemoveTrailingWhiteSpaces($InString);
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161
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162 Returns a string without any trailing white spaces.
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163
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164 RemoveLeadingAndTrailingWhiteSpaces
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165 $OutString = RemoveLeadingAndTrailingWhiteSpaces($InString);
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166
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167 Returns a string without any leading and traling white spaces.
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168
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169 SplitWords
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170 @Words = SplitWords($Line, $Delimiter);
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171
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172 Returns an array *Words* ontaining unquoted words generated after
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173 spliting string value *Line* containing quoted or unquoted words.
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174
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175 This function is used to split strings generated by JoinWords as
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176 replacement for Perl's core module funtion
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177 Text::ParseWords::quotewords() which dumps core on very long
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178 strings.
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179
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180 WrapText
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181 $OutString = WrapText($InString, [$WrapLength, $WrapDelimiter]);
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182
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183 Returns a wrapped string. By default, *WrapLenght* is *40* and
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184 *WrapDelimiter* is Unix new line character.
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185
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186 AUTHOR
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187 Manish Sud <msud@san.rr.com>
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188
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189 SEE ALSO
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190 FileUtil.pm
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191
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192 COPYRIGHT
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193 Copyright (C) 2015 Manish Sud. All rights reserved.
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194
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195 This file is part of MayaChemTools.
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196
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197 MayaChemTools is free software; you can redistribute it and/or modify it
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198 under the terms of the GNU Lesser General Public License as published by
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199 the Free Software Foundation; either version 3 of the License, or (at
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200 your option) any later version.
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201
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