comparison: dav/db.c
dav/db.c
- changeset 46
- 0542668d0f26
- child 47
- fbbbeed4ba8f
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| 45:e3839719b079 | 46:0542668d0f26 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2014 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "db.h" | |
| 34 | |
| 35 #include <libidav/utils.h> | |
| 36 | |
| 37 | |
| 38 #define xstreq(a,b) xmlStrEqual(BAD_CAST a, BAD_CAST b) | |
| 39 | |
| 40 #ifdef _WIN32 | |
| 41 #define ENV_HOME getenv("USERPROFILE") | |
| 42 #else | |
| 43 #define ENV_HOME getenv("HOME") | |
| 44 #endif /* _WIN32 */ | |
| 45 | |
| 46 UcxMap* load_db(char *name) { | |
| 47 char *dav_dir = util_concat_path(ENV_HOME, ".dav"); | |
| 48 char *db_file = util_concat_path(dav_dir, name); | |
| 49 free(dav_dir); | |
| 50 | |
| 51 xmlTextReaderPtr reader = xmlReaderForFile(db_file, NULL, 0); | |
| 52 if(!reader) { | |
| 53 fprintf(stderr, "Cannot open database file: %s\n", db_file); | |
| 54 free(db_file); | |
| 55 return NULL; | |
| 56 } | |
| 57 free(db_file); | |
| 58 | |
| 59 UcxMap *map = ucx_map_new(2048); | |
| 60 int error = 0; | |
| 61 while(xmlTextReaderRead(reader)) { | |
| 62 int type = xmlTextReaderNodeType(reader); | |
| 63 const xmlChar *name = xmlTextReaderConstName(reader); | |
| 64 | |
| 65 if(type == XML_READER_TYPE_ELEMENT) { | |
| 66 if(xstreq(name, "resource")) { | |
| 67 LocalResource *res = process_resource(reader); | |
| 68 if(res) { | |
| 69 ucx_map_cstr_put(map, res->path, res); | |
| 70 } else { | |
| 71 error = 1; | |
| 72 break; | |
| 73 } | |
| 74 } | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 xmlFreeTextReader(reader); | |
| 79 if(error) { | |
| 80 // TODO: free resources and map | |
| 81 return NULL; | |
| 82 } else { | |
| 83 return map; | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 LocalResource* process_resource(xmlTextReaderPtr reader) { | |
| 88 LocalResource *res = calloc(1, sizeof(LocalResource)); | |
| 89 | |
| 90 int field = -1; | |
| 91 while(xmlTextReaderRead(reader)) { | |
| 92 int type = xmlTextReaderNodeType(reader); | |
| 93 const xmlChar *name = xmlTextReaderConstName(reader); | |
| 94 | |
| 95 if(type == XML_READER_TYPE_ELEMENT) { | |
| 96 if(xstreq(name, "path")) { | |
| 97 field = 0; | |
| 98 } else if(xstreq(name, "etag")) { | |
| 99 field = 1; | |
| 100 } else if(xstreq(name, "lastmodified")) { | |
| 101 field = 2; | |
| 102 } else if(xstreq(name, "size")) { | |
| 103 field = 3; | |
| 104 } | |
| 105 } else if(type == XML_READER_TYPE_TEXT) { | |
| 106 const xmlChar *value = xmlTextReaderConstValue(reader); | |
| 107 int b = 0; | |
| 108 switch(field) { | |
| 109 case 0: { | |
| 110 res->name = strdup((char*)value); | |
| 111 break; | |
| 112 } | |
| 113 case 1: { | |
| 114 res->etag = strdup((char*)value); | |
| 115 break; | |
| 116 } | |
| 117 case 2: { | |
| 118 res->last_modified = util_parse_lastmodified((char*)value); | |
| 119 break; | |
| 120 } | |
| 121 case 3: { | |
| 122 res->size = atoi((char*)value); | |
| 123 break; | |
| 124 } | |
| 125 } | |
| 126 } else if(XML_READER_TYPE_END_ELEMENT) { | |
| 127 if(xstreq(name, "resource")) { | |
| 128 break; | |
| 129 } else { | |
| 130 field = -1; | |
| 131 } | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 if(!res->name || !res->path || res->last_modified == 0) { | |
| 136 // TODO: free res | |
| 137 return NULL; | |
| 138 } else { | |
| 139 return res; | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 int store_db(UcxMap *db, char *name) { | |
| 144 // TODO: | |
| 145 | |
| 146 } |
