comparison: dav/davql.c
dav/davql.c
- changeset 17
- 11dffb40cd91
- child 27
- e584c351b402
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| 16:5dbef9e07376 | 17:11dffb40cd91 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2013 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 | |
| 32 #include "davql.h" | |
| 33 #include "methods.h" | |
| 34 #include "webdav.h" | |
| 35 #include "utils.h" | |
| 36 | |
| 37 DavQuery dav_ql_parse(char *query, va_list ap) { | |
| 38 DavQuery davquery; | |
| 39 davquery.command = DAV_QUERY_ERROR; | |
| 40 davquery.command_data = NULL; | |
| 41 sstr_t q = sstr(query); | |
| 42 q = sstrtrim(q); | |
| 43 | |
| 44 // get query command | |
| 45 sstr_t cmd; | |
| 46 cmd.ptr = NULL; | |
| 47 int i; | |
| 48 for(i=0;i<q.length;i++) { | |
| 49 if(q.ptr[i] == ' ') { | |
| 50 cmd = sstrsubsl(q, 0, i); | |
| 51 break; | |
| 52 } | |
| 53 } | |
| 54 if(!cmd.ptr) { | |
| 55 fprintf(stderr, "DQL syntax error\n"); | |
| 56 return davquery; | |
| 57 } | |
| 58 | |
| 59 cmd = sstrtrim(cmd); | |
| 60 q = sstrtrim(sstrsubs(q, i)); | |
| 61 if(!sstrcmp(cmd, S("get"))) { | |
| 62 davquery.command = DAV_QUERY_GET; | |
| 63 davquery.command_data = dav_ql_parse_get(q, ap); | |
| 64 } | |
| 65 | |
| 66 return davquery; | |
| 67 } | |
| 68 | |
| 69 DavGetQuery* dav_ql_parse_get(sstr_t q, va_list ap) { | |
| 70 sstr_t property_query = q; | |
| 71 q = util_getsubstr_until_token(q, S("from"), &property_query); | |
| 72 | |
| 73 sstr_t from_query = q; | |
| 74 sstr_t cond = util_getsubstr_until_token(q, S("where"), &from_query); | |
| 75 | |
| 76 // insert variable values | |
| 77 UcxBuffer *fbuf = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND); | |
| 78 int var = 0; | |
| 79 for(int i=0;i<from_query.length;i++) { | |
| 80 char c = from_query.ptr[i]; | |
| 81 if(c == '%') { | |
| 82 if(var) { | |
| 83 ucx_buffer_putc(fbuf, '%'); // previous '%' | |
| 84 } else { | |
| 85 var = 1; | |
| 86 } | |
| 87 } else if(var) { | |
| 88 switch(c) { | |
| 89 case 's': { | |
| 90 char *arg = va_arg(ap, char*); | |
| 91 ucx_buffer_puts(fbuf, arg); | |
| 92 break; | |
| 93 } | |
| 94 default: { | |
| 95 ucx_buffer_putc(fbuf, '%'); | |
| 96 ucx_buffer_putc(fbuf, c); | |
| 97 } | |
| 98 } | |
| 99 var = 0; | |
| 100 } else { | |
| 101 ucx_buffer_putc(fbuf, c); | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 DavGetQuery *getquery = malloc(sizeof(DavGetQuery)); | |
| 106 getquery->properties = sstrdup(property_query); | |
| 107 getquery->from = sstrn(fbuf->space, fbuf->pos); | |
| 108 // TODO: condition | |
| 109 return getquery; | |
| 110 } | |
| 111 | |
| 112 void free_get_query(DavGetQuery *q) { | |
| 113 free(q->from.ptr); | |
| 114 free(q->properties.ptr); | |
| 115 free(q); | |
| 116 } | |
| 117 | |
| 118 int parse_path_query(sstr_t query, char **path, int *depth) { | |
| 119 if(query.length == 1) { | |
| 120 if(query.ptr[0] == '/') { | |
| 121 *path = sstrdup(query).ptr; | |
| 122 *depth = 1; | |
| 123 return 0; | |
| 124 } else { | |
| 125 *path = NULL; | |
| 126 return 1; | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 if(query.ptr[query.length-1] == '*') { | |
| 131 *depth = -1; | |
| 132 *path = sstrdup(sstrsubsl(query, 0, query.length-1)).ptr; | |
| 133 } else { | |
| 134 *path = sstrdup(query).ptr; | |
| 135 *depth = 1; | |
| 136 } | |
| 137 | |
| 138 return 0; | |
| 139 } |
