comparison: libidav/davqlexec.c
libidav/davqlexec.c
- changeset 104
- 6fb4d24d9df9
- child 123
- 806c4dccf2ae
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| 103:b29692d5f7a7 | 104:6fb4d24d9df9 |
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2015 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 <ucx/utils.h> | |
| 34 | |
| 35 #include "davqlexec.h" | |
| 36 | |
| 37 DavQLResult* dav_statement_exec(DavSession *sn, DavQLStatement *st, ...) { | |
| 38 va_list ap; | |
| 39 va_start(ap, st); | |
| 40 DavQLResult *result = dav_statement_execv(sn, st, ap); | |
| 41 va_end(ap); | |
| 42 return result; | |
| 43 } | |
| 44 | |
| 45 DavQLResult* dav_statement_execv(DavSession *sn, DavQLStatement *st, va_list ap) { | |
| 46 DavQLResult *result = dav_session_malloc(sn, sizeof(DavQLResult)); | |
| 47 result->result = NULL; | |
| 48 result->status = 1; | |
| 49 | |
| 50 // make sure the statement was successfully parsed | |
| 51 if(st->type == DAVQL_ERROR) { | |
| 52 return result; | |
| 53 } | |
| 54 | |
| 55 // get path string | |
| 56 davqlerror_t error; | |
| 57 UcxBuffer *path = dav_path_string(st->path, ap, &error); | |
| 58 | |
| 59 if(st->type == DAVQL_GET) { | |
| 60 dav_exec_get(sn, st, path->space, ap); | |
| 61 } else { | |
| 62 // TODO | |
| 63 } | |
| 64 | |
| 65 return result; | |
| 66 } | |
| 67 | |
| 68 UcxBuffer* dav_path_string(sstr_t pathfmt, va_list ap, davqlerror_t *error) { | |
| 69 UcxBuffer *path = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND); | |
| 70 | |
| 71 int placeholder = 0; | |
| 72 for(int i=0;i<pathfmt.length;i++) { | |
| 73 char c = pathfmt.ptr[i]; | |
| 74 if(placeholder) { | |
| 75 if(c == '%') { | |
| 76 // no placeholder, %% transposes to % | |
| 77 ucx_buffer_putc(path, c); | |
| 78 } else { | |
| 79 // detect placeholder type and insert arg | |
| 80 int err = 0; | |
| 81 switch(c) { | |
| 82 case 's': { | |
| 83 char *arg = va_arg(ap, char*); | |
| 84 ucx_buffer_puts(path, arg); | |
| 85 break; | |
| 86 } | |
| 87 case 'd': { | |
| 88 int arg = va_arg(ap, int); | |
| 89 ucx_bprintf(path, "%d", arg); | |
| 90 break; | |
| 91 } | |
| 92 case 'u': { | |
| 93 unsigned int arg = va_arg(ap, unsigned int); | |
| 94 ucx_bprintf(path, "%u", arg); | |
| 95 break; | |
| 96 } | |
| 97 case 't': { | |
| 98 // time arguments doesn't make any sense in a path | |
| 99 *error = DAVQL_UNSUPPORTED_FORMATCHAR; | |
| 100 err = 1; | |
| 101 break; | |
| 102 } | |
| 103 default: { | |
| 104 *error = DAVQL_UNKNOWN_FORMATCHAR; | |
| 105 err = 1; | |
| 106 } | |
| 107 } | |
| 108 if(err) { | |
| 109 ucx_buffer_free(path); | |
| 110 return NULL; | |
| 111 } | |
| 112 } | |
| 113 placeholder = 0; | |
| 114 } else { | |
| 115 if(c == '%') { | |
| 116 placeholder = 1; | |
| 117 } else { | |
| 118 ucx_buffer_putc(path, c); | |
| 119 } | |
| 120 } | |
| 121 } | |
| 122 ucx_buffer_putc(path, '\0'); | |
| 123 *error = DAVQL_OK; | |
| 124 return path; | |
| 125 } | |
| 126 | |
| 127 void dav_exec_get(DavSession *sn, DavQLStatement *st, char* path, va_list ap) { | |
| 128 // execute a davql get statement | |
| 129 | |
| 130 // TODO: get property list | |
| 131 | |
| 132 | |
| 133 } | |
| 134 | |
| 135 int dav_eval_lexpr(DavResource *res, DavQLExpression *lexpr) { | |
| 136 | |
| 137 } |
