libidav/xml.c

Wed, 13 Mar 2019 18:43:30 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 13 Mar 2019 18:43:30 +0100
changeset 522
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parent 520
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child 526
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permissions
-rw-r--r--

adds metadata config element for dav-sync

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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
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32
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33 #include <ucx/utils.h>
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34
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35 #include "xml.h"
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36
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37 static DavXmlNodeType convert_type(xmlElementType type) {
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38 DavXmlNodeType ct;
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39 switch(type) {
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40 default: ct = DAV_XML_NONE; break;
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41 case XML_ELEMENT_NODE: ct = DAV_XML_ELEMENT; break;
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42 case XML_TEXT_NODE: ct = DAV_XML_TEXT;
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43 }
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44 return ct;
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45 }
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46
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47 typedef struct {
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48 xmlNode *node;
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49 DavXmlNode *parent;
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50 } ConvXmlElm;
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51
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52 DavXmlNode* dav_convert_xml(DavSession *sn, xmlNode *node) {
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53 if(!node) {
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54 return NULL;
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55 }
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56 DavXmlNodeType newnt = convert_type(node->type);
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57 if(newnt == DAV_XML_NONE) {
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58 return NULL;
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59 }
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60
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61 UcxMempool *mp = sn->mp;
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62
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63 ConvXmlElm *ce = malloc(sizeof(ConvXmlElm));
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64 ce->node = node;
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65 ce->parent = NULL;
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66 UcxList *stack = ucx_list_prepend(NULL, ce);
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67
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68 DavXmlNode *ret = NULL;
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69
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70 while(stack) {
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71 ConvXmlElm *c = stack->data;
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72 stack = ucx_list_remove(stack, stack);
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73
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74 xmlNode *n = c->node;
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75 DavXmlNode *prev = NULL;
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76 while(n) {
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77 DavXmlNode *newxn = ucx_mempool_calloc(mp, 1, sizeof(DavXmlNode));
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78 if(!ret) {
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79 ret = newxn;
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80 }
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81 newxn->type = convert_type(n->type);
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82 newxn->parent = c->parent;
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83 if(c->parent && !c->parent->children) {
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84 c->parent->children = newxn;
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85 }
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86 newxn->prev = prev;
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87 if(prev) {
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88 prev->next = newxn;
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89 }
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90
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91 if(newxn->type == DAV_XML_ELEMENT) {
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92 newxn->name = dav_session_strdup(sn, (char*)n->name);
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93 if(n->ns && n->ns->href) {
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94 newxn->namespace = dav_session_strdup(sn, (char*)n->ns->href);
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95 }
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96
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97 xmlAttr *attr = n->properties;
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98 DavXmlAttr *newattr = NULL;
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99 DavXmlAttr *newattr_last = NULL;
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100 while(attr) {
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101 DavXmlAttr *na = ucx_mempool_calloc(mp, 1, sizeof(DavXmlAttr));
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102 na->name = dav_session_strdup(sn, (char*)attr->name);
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103 if(attr->children && attr->children->type == XML_TEXT_NODE) {
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104 na->value = dav_session_strdup(sn, (char*)attr->children->content);
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105 }
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106 if(!newattr) {
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107 newattr = na;
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108 } else {
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109 newattr_last->next = na;
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110 }
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111 newattr_last = na;
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112
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113 attr = attr->next;
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114 }
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115 newxn->attributes = newattr;
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116
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117 if(n->children) {
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118 ConvXmlElm *convc = malloc(sizeof(ConvXmlElm));
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119 convc->node = n->children;
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120 convc->parent = newxn;
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121 stack = ucx_list_prepend(stack, convc);
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122 }
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123 } else if(newxn->type == DAV_XML_TEXT) {
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124 sstr_t content = sstrdup_a(mp->allocator, sstr((char*)n->content));
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125 newxn->content = content.ptr;
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126 newxn->contentlength = content.length;
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127 }
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128
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129 prev = newxn;
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130 n = n->next;
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131 }
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132
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133 free(c);
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134 }
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135
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136 return ret;
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137 }
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138
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139 void dav_print_xml(DavXmlNode *node) {
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140 if(node->type == DAV_XML_ELEMENT) {
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141 printf("<%s", node->name);
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142 DavXmlAttr *attr = node->attributes;
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diff changeset
143 while(attr) {
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144 printf(" %s=\"%s\"", attr->name, attr->value);
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145 attr = attr->next;
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146 }
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147 putchar('>');
331
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148
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149 DavXmlNode *child = node->children;
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150 if(child) {
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151 dav_print_xml(child);
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152 }
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153
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154 printf("</%s>", node->name);
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155 } else {
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156 fwrite(node->content, 1, node->contentlength, stdout);
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157 fflush(stdout);
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158 }
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159 if(node->next) {
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160 dav_print_xml(node->next);
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161 }
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162 }
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163
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164 void dav_print_node(void *stream, write_func writef, UcxMap *nsmap, DavXmlNode *node) {
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165 while(node) {
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166 if(node->type == DAV_XML_ELEMENT) {
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167 char *tagend = node->children ? ">" : " />";
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168 char *prefix = NULL;
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169 if(node->namespace) {
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170 prefix = ucx_map_cstr_get(nsmap, node->namespace);
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171 if(!prefix) {
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172 sstr_t newpre = ucx_sprintf("x%d", (int)nsmap->count);
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173 ucx_map_cstr_put(nsmap, node->namespace, newpre.ptr);
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174 prefix = newpre.ptr;
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175 ucx_fprintf(
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176 stream,
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177 writef,
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178 "<%s:%s xmlns:%s=\"%s\"%s",
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179 prefix,
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180 node->name,
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181 prefix,
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182 node->namespace,
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183 tagend);
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184 } else {
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185 ucx_fprintf(stream, writef, "<%s:%s", prefix, node->name);
371
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186 }
361
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187 } else {
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188 ucx_fprintf(stream, writef, "<%s", node->name);
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189 }
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190
520
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191 DavXmlAttr *attr = node->attributes;
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192 while(attr) {
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193 ucx_fprintf(stream, writef, " %s=\"%s\"", attr->name, attr->value);
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194 attr = attr->next;
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195 }
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196 writef(tagend, 1, strlen(tagend), stream); // end xml tag
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197
361
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198 if(node->children) {
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199 dav_print_node(stream, writef, nsmap, node->children);
371
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200 if(prefix) {
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201 ucx_fprintf(stream, writef, "</%s:%s>", prefix, node->name);
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202 } else {
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203 ucx_fprintf(stream, writef, "</%s>", node->name);
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204 }
361
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205 }
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206 } else if(node->type == DAV_XML_TEXT) {
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207 writef(node->content, 1, node->contentlength, stream);
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208 }
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209
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210 node = node->next;
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211 }
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diff changeset
212 }
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213
331
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214 /* ------------------------- public API ------------------------- */
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215
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216 char* dav_xml_getstring(DavXmlNode *node) {
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217 if(node && node->type == DAV_XML_TEXT) {
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218 return node->content;
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219 } else {
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220 return NULL;
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221 }
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222 }
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223
338
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diff changeset
224 DavBool dav_xml_isstring(DavXmlNode *node) {
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diff changeset
225 if(node && node->type == DAV_XML_TEXT && !node->next) {
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diff changeset
226 return TRUE;
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diff changeset
227 } else {
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228 return FALSE;
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diff changeset
229 }
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230 }
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diff changeset
231
373
dcc03142eb5f dav info prints simplified xml values
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diff changeset
232 DavXmlNode* dav_xml_nextelm(DavXmlNode *node) {
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diff changeset
233 node = node->next;
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diff changeset
234 while(node) {
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diff changeset
235 if(node->type == DAV_XML_ELEMENT) {
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diff changeset
236 return node;
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diff changeset
237 }
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diff changeset
238 node = node->next;
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diff changeset
239 }
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diff changeset
240 return NULL;
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parents: 371
diff changeset
241 }
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242
331
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parents:
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243 DavXmlNode* dav_text_node(DavSession *sn, char *text) {
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244 UcxMempool *mp = sn->mp;
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245 DavXmlNode *newxn = ucx_mempool_calloc(mp, 1, sizeof(DavXmlNode));
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246 newxn->type = DAV_XML_TEXT;
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247 sstr_t content = sstrdup_a(mp->allocator, sstr(text));
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248 newxn->content = content.ptr;
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249 newxn->contentlength = content.length;
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250 return newxn;
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251 }
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252
361
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253
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diff changeset
254
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diff changeset
255
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diff changeset
256 DavXmlNode* dav_copy_node(DavXmlNode *node) {
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diff changeset
257 DavXmlNode *ret = NULL;
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diff changeset
258 DavXmlNode *prev = NULL;
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diff changeset
259 while(node) {
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diff changeset
260 DavXmlNode *copy = calloc(1, sizeof(DavXmlNode));
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diff changeset
261 copy->type = node->type;
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diff changeset
262 if(node->type == DAV_XML_ELEMENT) {
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diff changeset
263 copy->namespace = strdup(node->namespace);
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diff changeset
264 copy->name = strdup(node->name);
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diff changeset
265 copy->children = dav_copy_node(node->children);
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diff changeset
266 } else {
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diff changeset
267 copy->contentlength = node->contentlength;
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diff changeset
268 copy->content = malloc(node->contentlength+1);
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diff changeset
269 memcpy(copy->content, node->content, node->contentlength);
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diff changeset
270 copy->content[copy->contentlength] = 0;
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diff changeset
271 }
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diff changeset
272 if(!ret) {
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diff changeset
273 ret = copy;
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diff changeset
274 }
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diff changeset
275 if(prev) {
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diff changeset
276 prev->next = copy;
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277 copy->prev = prev;
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diff changeset
278 }
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diff changeset
279 prev = copy;
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280 node = node->next;
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diff changeset
281 }
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diff changeset
282 return ret;
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diff changeset
283 }
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diff changeset
284
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285
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diff changeset
286 DavXmlNode* dav_xml_createnode(const char *ns, const char *name) {
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diff changeset
287 DavXmlNode *node = calloc(1, sizeof(DavXmlNode));
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288 node->type = DAV_XML_ELEMENT;
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289 node->namespace = strdup(ns);
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290 node->name = strdup(name);
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291 return node;
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292 }
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293
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294 DavXmlNode* dav_xml_createnode_with_text(const char *ns, const char *name, const char *text) {
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295 DavXmlNode *node = calloc(1, sizeof(DavXmlNode));
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296 node->type = DAV_XML_ELEMENT;
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297 node->namespace = strdup(ns);
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298 node->name = strdup(name);
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299
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300 DavXmlNode *textnode = dav_xml_createtextnode(text);
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301 node->children = textnode;
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302
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303 return node;
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304 }
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305
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306 DavXmlNode* dav_xml_createtextnode(const char *text) {
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307 DavXmlNode *node = calloc(1, sizeof(DavXmlNode));
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308 node->type = DAV_XML_TEXT;
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309 sstr_t content = sstrdup(sstr((char*)text));
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310 node->content = content.ptr;
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311 node->contentlength = content.length;
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312 return node;
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313 }
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314
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315 void dav_xml_add_child(DavXmlNode *node, DavXmlNode *child) {
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316 DavXmlNode *last_child = NULL;
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317 DavXmlNode *c = node->children;
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318 while(c) {
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319 last_child = c;
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320 c = c->next;
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321 }
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322 if(last_child) {
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323 last_child->next = child;
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324 child->prev = last_child;
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325 } else {
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326 node->children = child;
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327 }
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328 }
371
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329
520
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330 void dav_xml_add_attr(DavXmlNode *node, const char *name, const char *value) {
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331 DavXmlAttr *attr = calloc(1, sizeof(DavXmlAttr));
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332 attr->name = strdup(name);
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333 attr->value = strdup(value);
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334
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335 if(node->attributes) {
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336 DavXmlAttr *last;
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337 DavXmlAttr *end = node->attributes;
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338 while(end) {
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339 last = end;
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340 end = end->next;
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341 }
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342 last->next = attr;
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343 } else {
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344 node->attributes = attr;
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345 }
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diff changeset
346 }
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diff changeset
347
371
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diff changeset
348 DavXmlNode* dav_parse_xml(DavSession *sn, const char *str, size_t len) {
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diff changeset
349 xmlDoc *doc = xmlReadMemory(str, len, NULL, NULL, 0);
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diff changeset
350 if(!doc) {
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diff changeset
351 return NULL;
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diff changeset
352 }
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diff changeset
353 xmlNode *xml_root = xmlDocGetRootElement(doc);
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diff changeset
354 if(!xml_root) {
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parents: 361
diff changeset
355 xmlFreeDoc(doc);
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diff changeset
356 return NULL;
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parents: 361
diff changeset
357 }
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parents: 361
diff changeset
358 DavXmlNode *x = dav_convert_xml(sn, xml_root);
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parents: 361
diff changeset
359 xmlFreeDoc(doc);
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parents: 361
diff changeset
360 return x;
604e7e335b3b adds support for xml properties in set-property command
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parents: 361
diff changeset
361 }

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