1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2018 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 #ifndef DAVQLEXEC_H
29 #define DAVQLEXEC_H
30
31 #include <stdarg.h>
32 #include "davqlparser.h"
33 #include "webdav.h"
34
35 #include <cx/buffer.h>
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 typedef struct DavQLCmd DavQLCmd;
42 typedef struct DavQLStackObj DavQLStackObj;
43 typedef struct DavQLRes DavQLRes;
44
45 typedef struct DavQLArg DavQLArg;
46 typedef struct DavQLArgList DavQLArgList;
47
48 typedef void*(*davql_func)(); // TODO: interface?
49
50 struct DavQLArg {
51 int type;
52 union DavQLArgValue{
53 int d;
54 unsigned int u;
55 char *s;
56 time_t t;
57 } value;
58 DavQLArg *next;
59 };
60
61 struct DavQLArgList {
62 DavQLArg *first;
63 DavQLArg *current;
64 };
65
66 typedef enum {
67 DAVQL_OK = 0,
68 DAVQL_UNSUPPORTED_FORMATCHAR,
69 DAVQL_UNKNOWN_FORMATCHAR,
70 DAVQL_OOM
71 } davqlerror_t;
72
73 typedef enum {
74 DAVQL_CMD_INT = 0,
75 DAVQL_CMD_STRING,
76 DAVQL_CMD_TIMESTAMP,
77 DAVQL_CMD_RES_IDENTIFIER,
78 DAVQL_CMD_PROP_IDENTIFIER,
79 //DAVQL_CMD_OP_UNARY_ADD,
80 DAVQL_CMD_OP_UNARY_SUB,
81 DAVQL_CMD_OP_UNARY_NEG,
82 DAVQL_CMD_OP_BINARY_ADD,
83 DAVQL_CMD_OP_BINARY_SUB,
84 DAVQL_CMD_OP_BINARY_MUL,
85 DAVQL_CMD_OP_BINARY_DIV,
86 DAVQL_CMD_OP_BINARY_AND,
87 DAVQL_CMD_OP_BINARY_OR,
88 DAVQL_CMD_OP_BINARY_XOR,
89 DAVQL_CMD_OP_LOGICAL_NOT,
90 DAVQL_CMD_OP_LOGICAL_AND,
91 DAVQL_CMD_OP_LOGICAL_OR_L,
92 DAVQL_CMD_OP_LOGICAL_OR,
93 DAVQL_CMD_OP_LOGICAL_XOR,
94 DAVQL_CMD_OP_EQ,
95 DAVQL_CMD_OP_NEQ,
96 DAVQL_CMD_OP_LT,
97 DAVQL_CMD_OP_GT,
98 DAVQL_CMD_OP_LE,
99 DAVQL_CMD_OP_GE,
100 DAVQL_CMD_OP_LIKE,
101 DAVQL_CMD_OP_UNLIKE,
102 DAVQL_CMD_CALL
103 } davqlcmdtype_t;
104
105 typedef enum {
106 DAVQL_RES_NAME = 0,
107 DAVQL_RES_PATH,
108 DAVQL_RES_HREF,
109 DAVQL_RES_CONTENTLENGTH,
110 DAVQL_RES_CONTENTTYPE,
111 DAVQL_RES_CREATIONDATE,
112 DAVQL_RES_LASTMODIFIED,
113 DAVQL_RES_ISCOLLECTION
114 } davqlresprop_t;
115
116 struct DavQLCmd {
117 davqlcmdtype_t type;
118 union DavQLCmdData {
119 int64_t integer;
120 cxmutstr string;
121 time_t timestamp;
122 davqlresprop_t resprop;
123 DavPropName property;
124 davql_func func;
125 } data;
126 };
127
128 struct DavQLStackObj {
129 int32_t type; // 0: int, 1: string, 2: xml
130 uint32_t length;
131 union DavQLStackData {
132 int64_t integer;
133 char *string;
134 DavXmlNode *node;
135 } data;
136 };
137
138 struct DavQLRes {
139 DavResource *resource;
140 int depth;
141 };
142
143 typedef struct DavCompiledField {
144 char *ns;
145 char *name;
146 CxBuffer *code;
147 } DavCompiledField;
148
149 typedef struct DavOrderCriterion {
150 int type; // 0: resprop, 1: property
151 union DavQLColumn {
152 davqlresprop_t resprop;
153 CxHashKey property;
154 } column;
155 _Bool descending;
156 } DavOrderCriterion;
157
158 DavQLArgList* dav_ql_get_args(DavQLStatement *st, va_list ap);
159 void dav_ql_free_arglist(DavQLArgList *args);
160
161 int dav_ql_getarg_int(DavQLArgList *args);
162 unsigned int dav_ql_getarg_uint(DavQLArgList *args);
163 char* dav_ql_getarg_str(DavQLArgList *args);
164 time_t dav_ql_getarg_time(DavQLArgList *args);
165
166 DavResult dav_statement_exec(DavSession *sn, DavQLStatement *st, ...);
167 DavResult dav_statement_execv(DavSession *sn, DavQLStatement *st, va_list ap);
168
169 CxBuffer* dav_path_string(cxmutstr src, DavQLArgList *args, davqlerror_t *error);
170 cxmutstr dav_format_string(const CxAllocator *a, cxstring fstr, DavQLArgList *ap, davqlerror_t *error);
171
172 DavResult dav_exec_select(DavSession *sn, DavQLStatement *st, va_list ap);
173
174 int dav_identifier2resprop(cxstring src, davqlresprop_t *prop);
175
176 CxBuffer* dav_compile_expr(DavContext *ctx, const CxAllocator *a, DavQLExpression *lexpr, DavQLArgList *ap);
177
178 int dav_exec_expr(CxBuffer *bcode, DavResource *res, DavQLStackObj *result);
179
180
181
182 #ifdef __cplusplus
183 }
184 #endif
185
186 #endif /* DAVQLEXEC_H */
187
188