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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version. See the file
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12 COPYING included with this distribution for more information.
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13 */
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14
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15 /*
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16 This is a modified version of a source file from the
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17 Rosegarden MIDI and audio sequencer and notation editor.
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18 This file copyright 2000-2010 Chris Cannam.
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19 */
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20
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21 #include "StringBits.h"
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22
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23 double
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24 StringBits::stringToDoubleLocaleFree(QString s, bool *ok)
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25 {
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26 int dp = 0;
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27 int sign = 1;
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28 int i = 0;
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29 double result = 0.0;
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30 int len = s.length();
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31
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32 result = 0.0;
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33
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34 if (ok) *ok = true;
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35
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36 while (i < len && s[i].isSpace()) ++i;
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37 if (i < len && s[i] == '-') sign = -1;
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38
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39 while (i < len) {
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40
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41 QChar c = s[i];
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42
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43 if (c.isDigit()) {
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44
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45 double d = c.digitValue();
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46
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47 if (dp > 0) {
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48 for (int p = dp; p > 0; --p) d /= 10.0;
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49 ++dp;
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50 } else {
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51 result *= 10.0;
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52 }
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53
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54 result += d;
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55
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56 } else if (c == '.') {
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57
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58 dp = 1;
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59
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60 } else if (ok) {
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61 *ok = false;
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62 }
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63
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64 ++i;
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65 }
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66
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67 return result * sign;
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68 }
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69
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70 QStringList
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71 StringBits::splitQuoted(QString s, QChar separator)
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72 {
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73 QStringList tokens;
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74 QString tok;
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75
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76 enum { sep, unq, q1, q2 } mode = sep;
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77
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78 for (int i = 0; i < s.length(); ++i) {
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79
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80 QChar c = s[i];
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81
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82 if (c == '\'') {
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83 switch (mode) {
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84 case sep: mode = q1; break;
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85 case unq: case q2: tok += c; break;
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86 case q1: mode = sep; tokens << tok; tok = ""; break;
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87 }
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88
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89 } else if (c == '"') {
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90 switch (mode) {
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91 case sep: mode = q2; break;
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92 case unq: case q1: tok += c; break;
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93 case q2: mode = sep; tokens << tok; tok = ""; break;
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94 }
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95
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96 } else if (c == separator || (separator == ' ' && c.isSpace())) {
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97 switch (mode) {
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98 case sep: if (separator != ' ') tokens << ""; break;
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99 case unq: mode = sep; tokens << tok; tok = ""; break;
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100 case q1: case q2: tok += c; break;
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101 }
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102
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103 } else if (c == '\\') {
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104 if (++i < s.length()) {
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105 c = s[i];
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106 switch (mode) {
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107 case sep: mode = unq; tok += c; break;
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108 default: tok += c; break;
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109 }
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110 }
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111
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112 } else {
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113 switch (mode) {
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114 case sep: mode = unq; tok += c; break;
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115 default: tok += c; break;
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116 }
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117 }
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118 }
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119
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120 if (tok != "" || mode != sep) tokens << tok;
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121 return tokens;
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122 }
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123
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124 /*
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125
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126 void testSplit()
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127 {
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128 QStringList tests;
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129 tests << "a b c d";
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130 tests << "a \"b c\" d";
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131 tests << "a 'b c' d";
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132 tests << "a \"b c\\\" d\"";
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133 tests << "a 'b c\\' d'";
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134 tests << "a \"b c' d\"";
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135 tests << "a 'b c\" d'";
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136 tests << "aa 'bb cc\" dd'";
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137 tests << "a'a 'bb' \\\"cc\" dd\\\"";
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138 tests << " a'a \\\' 'bb' \' \\\"cc\" ' dd\\\" '";
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139
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140 for (int j = 0; j < tests.size(); ++j) {
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141 cout << endl;
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142 cout << tests[j] << endl;
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143 cout << "->" << endl << "(";
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144 QStringList l = splitQuoted(tests[j], ' ');
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145 for (int i = 0; i < l.size(); ++i) {
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146 if (i > 0) cout << ";";
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147 cout << l[i];
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148 }
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149 cout << ")" << endl;
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150 }
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151 }
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152
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153 */
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154
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155 /*
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156 Results:
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157
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158 a b c d
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159 ->
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160 (a;b;c;d)
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161
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162 a "b c" d
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163 ->
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164 (a;b c;d)
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165
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166 a 'b c' d
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167 ->
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168 (a;b c;d)
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169
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170 a "b c\" d"
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171 ->
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172 (a;b c" d)
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173
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174 a 'b c\' d'
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175 ->
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176 (a;b c' d)
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177
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178 a "b c' d"
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179 ->
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180 (a;b c' d)
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181
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182 a 'b c" d'
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183 ->
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184 (a;b c" d)
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185
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186 aa 'bb cc" dd'
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187 ->
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188 (aa;bb cc" dd)
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189
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190 a'a 'bb' \"cc" dd\"
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191 ->
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192 (a'a;bb;"cc";dd")
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193
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194 a'a \' 'bb' ' \"cc" ' dd\" '
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195 ->
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196 (a'a;';bb; "cc" ;dd";)
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197
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198 */
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199
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200 QStringList
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201 StringBits::split(QString line, QChar separator, bool quoted)
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202 {
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203 if (quoted) {
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204 return splitQuoted(line, separator);
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205 } else {
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206 return line.split(separator,
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207 separator == ' ' ? QString::SkipEmptyParts :
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208 QString::KeepEmptyParts);
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209 }
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210 }
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211
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