1 | #include "owl.h" |
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2 | |
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3 | static const char fileIdent[] = "$Id$"; |
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4 | |
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5 | #define OWL_FILTERELEMENT_NULL 0 |
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6 | #define OWL_FILTERELEMENT_TRUE 1 |
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7 | #define OWL_FILTERELEMENT_FALSE 2 |
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8 | #define OWL_FILTERELEMENT_OPENBRACE 3 |
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9 | #define OWL_FILTERELEMENT_CLOSEBRACE 4 |
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10 | #define OWL_FILTERELEMENT_AND 5 |
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11 | #define OWL_FILTERELEMENT_OR 6 |
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12 | #define OWL_FILTERELEMENT_NOT 7 |
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13 | #define OWL_FILTERELEMENT_RE 8 |
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14 | #define OWL_FILTERELEMENT_FILTER 9 |
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15 | |
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16 | void owl_filterelement_create_null(owl_filterelement *fe) |
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17 | { |
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18 | fe->type=OWL_FILTERELEMENT_NULL; |
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19 | fe->field=NULL; |
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20 | fe->filtername=NULL; |
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21 | } |
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22 | |
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23 | void owl_filterelement_create_openbrace(owl_filterelement *fe) |
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24 | { |
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25 | owl_filterelement_create_null(fe); |
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26 | fe->type=OWL_FILTERELEMENT_OPENBRACE; |
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27 | } |
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28 | |
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29 | void owl_filterelement_create_closebrace(owl_filterelement *fe) |
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30 | { |
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31 | owl_filterelement_create_null(fe); |
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32 | fe->type=OWL_FILTERELEMENT_CLOSEBRACE; |
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33 | } |
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34 | |
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35 | void owl_filterelement_create_and(owl_filterelement *fe) |
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36 | { |
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37 | owl_filterelement_create_null(fe); |
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38 | fe->type=OWL_FILTERELEMENT_AND; |
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39 | } |
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40 | |
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41 | void owl_filterelement_create_or(owl_filterelement *fe) |
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42 | { |
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43 | owl_filterelement_create_null(fe); |
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44 | fe->type=OWL_FILTERELEMENT_OR; |
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45 | } |
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46 | |
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47 | void owl_filterelement_create_not(owl_filterelement *fe) |
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48 | { |
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49 | owl_filterelement_create_null(fe); |
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50 | fe->type=OWL_FILTERELEMENT_NOT; |
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51 | } |
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52 | |
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53 | void owl_filterelement_create_true(owl_filterelement *fe) |
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54 | { |
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55 | owl_filterelement_create_null(fe); |
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56 | fe->type=OWL_FILTERELEMENT_TRUE; |
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57 | } |
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58 | |
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59 | void owl_filterelement_create_false(owl_filterelement *fe) |
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60 | { |
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61 | owl_filterelement_create_null(fe); |
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62 | fe->type=OWL_FILTERELEMENT_FALSE; |
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63 | } |
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64 | |
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65 | void owl_filterelement_create_re(owl_filterelement *fe, char *field, char *re) |
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66 | { |
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67 | owl_filterelement_create_null(fe); |
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68 | fe->type=OWL_FILTERELEMENT_RE; |
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69 | fe->field=owl_strdup(field); |
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70 | owl_regex_create(&(fe->re), re); |
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71 | } |
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72 | |
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73 | void owl_filterelement_create_filter(owl_filterelement *fe, char *name) |
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74 | { |
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75 | owl_filterelement_create_null(fe); |
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76 | fe->type=OWL_FILTERELEMENT_FILTER; |
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77 | fe->filtername=owl_strdup(name); |
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78 | } |
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79 | |
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80 | void owl_filterelement_free(owl_filterelement *fe) |
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81 | { |
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82 | if (fe->field) owl_free(fe->field); |
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83 | if (fe->filtername) owl_free(fe->filtername); |
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84 | } |
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85 | |
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86 | int owl_filterelement_is_null(owl_filterelement *fe) |
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87 | { |
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88 | if (fe->type==OWL_FILTERELEMENT_NULL) return(1); |
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89 | return(0); |
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90 | } |
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91 | |
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92 | int owl_filterelement_is_openbrace(owl_filterelement *fe) |
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93 | { |
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94 | if (fe->type==OWL_FILTERELEMENT_OPENBRACE) return(1); |
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95 | return(0); |
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96 | } |
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97 | |
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98 | int owl_filterelement_is_closebrace(owl_filterelement *fe) |
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99 | { |
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100 | if (fe->type==OWL_FILTERELEMENT_CLOSEBRACE) return(1); |
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101 | return(0); |
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102 | } |
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103 | |
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104 | int owl_filterelement_is_and(owl_filterelement *fe) |
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105 | { |
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106 | if (fe->type==OWL_FILTERELEMENT_AND) return(1); |
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107 | return(0); |
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108 | } |
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109 | |
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110 | int owl_filterelement_is_or(owl_filterelement *fe) |
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111 | { |
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112 | if (fe->type==OWL_FILTERELEMENT_OR) return(1); |
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113 | return(0); |
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114 | } |
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115 | |
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116 | int owl_filterelement_is_not(owl_filterelement *fe) |
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117 | { |
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118 | if (fe->type==OWL_FILTERELEMENT_NOT) return(1); |
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119 | return(0); |
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120 | } |
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121 | |
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122 | int owl_filterelement_is_true(owl_filterelement *fe) |
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123 | { |
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124 | if (fe->type==OWL_FILTERELEMENT_TRUE) return(1); |
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125 | return(0); |
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126 | } |
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127 | |
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128 | int owl_filterelement_is_false(owl_filterelement *fe) |
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129 | { |
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130 | if (fe->type==OWL_FILTERELEMENT_FALSE) return(1); |
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131 | return(0); |
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132 | } |
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133 | |
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134 | int owl_filterelement_is_re(owl_filterelement *fe) |
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135 | { |
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136 | if (fe->type==OWL_FILTERELEMENT_RE) return(1); |
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137 | return(0); |
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138 | } |
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139 | |
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140 | owl_regex *owl_filterelement_get_re(owl_filterelement *fe) |
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141 | { |
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142 | return(&(fe->re)); |
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143 | } |
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144 | |
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145 | int owl_filterelement_is_filter(owl_filterelement *fe) |
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146 | { |
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147 | if (fe->type==OWL_FILTERELEMENT_FILTER) return(1); |
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148 | return(0); |
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149 | } |
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150 | |
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151 | char *owl_filterelement_get_field(owl_filterelement *fe) |
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152 | { |
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153 | if (fe->field) return(fe->field); |
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154 | return("unknown-field"); |
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155 | } |
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156 | |
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157 | char *owl_filterelement_get_filtername(owl_filterelement *fe) |
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158 | { |
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159 | if (fe->filtername) return(fe->filtername); |
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160 | return("unknown-filter"); |
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161 | } |
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162 | |
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163 | int owl_filterelement_is_value(owl_filterelement *fe) |
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164 | { |
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165 | if ( (fe->type==OWL_FILTERELEMENT_TRUE) || |
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166 | (fe->type==OWL_FILTERELEMENT_FALSE) || |
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167 | (fe->type==OWL_FILTERELEMENT_RE) || |
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168 | (fe->type==OWL_FILTERELEMENT_FILTER)) { |
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169 | return(1); |
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170 | } |
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171 | return(0); |
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172 | } |
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173 | |
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174 | /* caller must free the return */ |
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175 | char *owl_filterelement_to_string(owl_filterelement *fe) |
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176 | { |
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177 | if (owl_filterelement_is_openbrace(fe)) { |
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178 | return(owl_strdup("( ")); |
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179 | } else if (owl_filterelement_is_closebrace(fe)) { |
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180 | return(owl_strdup(") ")); |
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181 | } else if (owl_filterelement_is_and(fe)) { |
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182 | return(owl_strdup("and ")); |
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183 | } else if (owl_filterelement_is_or(fe)) { |
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184 | return(owl_strdup("or ")); |
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185 | } else if (owl_filterelement_is_not(fe)) { |
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186 | return(owl_strdup("not ")); |
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187 | } else if (owl_filterelement_is_true(fe)) { |
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188 | return(owl_strdup("true ")); |
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189 | } else if (owl_filterelement_is_false(fe)) { |
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190 | return(owl_strdup("false ")); |
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191 | } else if (owl_filterelement_is_re(fe)) { |
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192 | return(owl_sprintf("%s %s ", fe->field, owl_regex_get_string(&(fe->re)))); |
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193 | } else if (owl_filterelement_is_filter(fe)) { |
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194 | return(owl_sprintf("filter %s ", fe->filtername)); |
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195 | } |
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196 | |
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197 | return(owl_strdup("?")); |
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198 | } |
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