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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2018 Olaf Wintermann. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | #ifndef DAVQLEXEC_H |
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29 | #define DAVQLEXEC_H |
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30 | |
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31 | #include <stdarg.h> |
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32 | #include "davqlparser.h" |
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33 | #include "webdav.h" |
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34 | |
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35 | #include <ucx/buffer.h> |
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36 | |
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37 | #ifdef __cplusplus |
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38 | extern "C" { |
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39 | #endif |
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40 | |
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41 | typedef struct DavQLCmd DavQLCmd; |
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42 | typedef struct DavQLStackObj DavQLStackObj; |
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43 | typedef struct DavQLRes DavQLRes; |
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44 | |
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45 | typedef struct DavQLArg DavQLArg; |
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46 | typedef struct DavQLArgList DavQLArgList; |
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47 | |
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48 | typedef void*(*davql_func)(); // TODO: interface? |
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49 | |
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50 | struct DavQLArg { |
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51 | int type; |
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52 | union DavQLArgValue{ |
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53 | int d; |
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54 | unsigned int u; |
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55 | char *s; |
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56 | time_t t; |
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57 | } value; |
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58 | DavQLArg *next; |
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59 | }; |
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60 | |
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61 | struct DavQLArgList { |
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62 | DavQLArg *first; |
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63 | DavQLArg *current; |
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64 | }; |
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65 | |
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66 | typedef enum { |
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67 | DAVQL_OK = 0, |
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68 | DAVQL_UNSUPPORTED_FORMATCHAR, |
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69 | DAVQL_UNKNOWN_FORMATCHAR |
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70 | } davqlerror_t; |
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71 | |
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72 | typedef enum { |
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73 | DAVQL_CMD_INT = 0, |
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74 | DAVQL_CMD_STRING, |
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75 | DAVQL_CMD_TIMESTAMP, |
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76 | DAVQL_CMD_RES_IDENTIFIER, |
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77 | DAVQL_CMD_PROP_IDENTIFIER, |
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78 | //DAVQL_CMD_OP_UNARY_ADD, |
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79 | DAVQL_CMD_OP_UNARY_SUB, |
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80 | DAVQL_CMD_OP_UNARY_NEG, |
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81 | DAVQL_CMD_OP_BINARY_ADD, |
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82 | DAVQL_CMD_OP_BINARY_SUB, |
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83 | DAVQL_CMD_OP_BINARY_MUL, |
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84 | DAVQL_CMD_OP_BINARY_DIV, |
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85 | DAVQL_CMD_OP_BINARY_AND, |
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86 | DAVQL_CMD_OP_BINARY_OR, |
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87 | DAVQL_CMD_OP_BINARY_XOR, |
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88 | DAVQL_CMD_OP_LOGICAL_NOT, |
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89 | DAVQL_CMD_OP_LOGICAL_AND, |
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90 | DAVQL_CMD_OP_LOGICAL_OR_L, |
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91 | DAVQL_CMD_OP_LOGICAL_OR, |
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92 | DAVQL_CMD_OP_LOGICAL_XOR, |
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93 | DAVQL_CMD_OP_EQ, |
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94 | DAVQL_CMD_OP_NEQ, |
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95 | DAVQL_CMD_OP_LT, |
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96 | DAVQL_CMD_OP_GT, |
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97 | DAVQL_CMD_OP_LE, |
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98 | DAVQL_CMD_OP_GE, |
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99 | DAVQL_CMD_OP_LIKE, |
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100 | DAVQL_CMD_OP_UNLIKE, |
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101 | DAVQL_CMD_CALL |
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102 | } davqlcmdtype_t; |
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103 | |
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104 | typedef enum { |
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105 | DAVQL_RES_NAME = 0, |
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106 | DAVQL_RES_PATH, |
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107 | DAVQL_RES_HREF, |
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108 | DAVQL_RES_CONTENTLENGTH, |
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109 | DAVQL_RES_CONTENTTYPE, |
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110 | DAVQL_RES_CREATIONDATE, |
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111 | DAVQL_RES_LASTMODIFIED, |
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112 | DAVQL_RES_ISCOLLECTION |
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113 | } davqlresprop_t; |
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114 | |
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115 | struct DavQLCmd { |
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116 | davqlcmdtype_t type; |
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117 | union DavQLCmdData { |
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118 | int64_t integer; |
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119 | sstr_t string; |
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120 | time_t timestamp; |
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121 | davqlresprop_t resprop; |
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122 | DavPropName property; |
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123 | davql_func func; |
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124 | } data; |
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125 | }; |
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126 | |
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127 | struct DavQLStackObj { |
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128 | int32_t type; // 0: int, 1: string, 2: xml |
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129 | uint32_t length; |
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130 | union DavQLStackData { |
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131 | int64_t integer; |
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132 | char *string; |
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133 | DavXmlNode *node; |
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134 | } data; |
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135 | }; |
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136 | |
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137 | struct DavQLRes { |
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138 | DavResource *resource; |
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139 | int depth; |
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140 | }; |
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141 | |
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142 | typedef struct DavCompiledField { |
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143 | char *ns; |
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144 | char *name; |
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145 | UcxBuffer *code; |
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146 | } DavCompiledField; |
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147 | |
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148 | typedef struct DavOrderCriterion { |
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149 | int type; // 0: resprop, 1: property |
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150 | union DavQLColumn { |
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151 | davqlresprop_t resprop; |
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152 | UcxKey property; |
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153 | } column; |
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154 | _Bool descending; |
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155 | } DavOrderCriterion; |
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156 | |
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157 | DavQLArgList* dav_ql_get_args(DavQLStatement *st, va_list ap); |
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158 | void dav_ql_free_arglist(DavQLArgList *args); |
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159 | |
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160 | int dav_ql_getarg_int(DavQLArgList *args); |
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161 | unsigned int dav_ql_getarg_uint(DavQLArgList *args); |
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162 | char* dav_ql_getarg_str(DavQLArgList *args); |
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163 | time_t dav_ql_getarg_time(DavQLArgList *args); |
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164 | |
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165 | DavResult dav_statement_exec(DavSession *sn, DavQLStatement *st, ...); |
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166 | DavResult dav_statement_execv(DavSession *sn, DavQLStatement *st, va_list ap); |
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167 | |
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168 | UcxBuffer* dav_path_string(sstr_t src, DavQLArgList *args, davqlerror_t *error); |
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169 | sstr_t dav_format_string(UcxAllocator *a, sstr_t fstr, DavQLArgList *ap, davqlerror_t *error); |
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170 | |
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171 | DavResult dav_exec_select(DavSession *sn, DavQLStatement *st, va_list ap); |
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172 | |
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173 | int dav_identifier2resprop(sstr_t src, davqlresprop_t *prop); |
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174 | |
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175 | UcxBuffer* dav_compile_expr(DavContext *ctx, UcxAllocator *a, DavQLExpression *lexpr, DavQLArgList *ap); |
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176 | |
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177 | int dav_exec_expr(UcxBuffer *bcode, DavResource *res, DavQLStackObj *result); |
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178 | |
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179 | |
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180 | |
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181 | #ifdef __cplusplus |
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182 | } |
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183 | #endif |
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184 | |
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185 | #endif /* DAVQLEXEC_H */ |
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186 |