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1 office 1 /**
2 * @file from_string.c
3 * @author Ambroz Bizjak <ambrop7@gmail.com>
4 *
5 * @section LICENSE
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the
15 * names of its contributors may be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * @section DESCRIPTION
30 *
31 * Synopsis:
32 * from_string(string str)
33 * Variables:
34 * (empty) - str, parsed as a value
35 */
36  
37 #include <stdlib.h>
38 #include <string.h>
39  
40 #include <ncd/NCDValParser.h>
41  
42 #include <ncd/module_common.h>
43  
44 #include <generated/blog_channel_ncd_from_string.h>
45  
46 struct instance {
47 NCDModuleInst *i;
48 NCDValMem mem;
49 NCDValRef val;
50 };
51  
52 static void func_new (void *vo, NCDModuleInst *i, const struct NCDModuleInst_new_params *params)
53 {
54 struct instance *o = vo;
55 o->i = i;
56  
57 // read arguments
58 NCDValRef str_arg;
59 if (!NCDVal_ListRead(params->args, 1, &str_arg)) {
60 ModuleLog(i, BLOG_ERROR, "wrong arity");
61 goto fail0;
62 }
63 if (!NCDVal_IsString(str_arg)) {
64 ModuleLog(i, BLOG_ERROR, "wrong type");
65 goto fail0;
66 }
67  
68 // init mem
69 NCDValMem_Init(&o->mem, i->params->iparams->string_index);
70  
71 // parse value string
72 if (!NCDValParser_Parse(NCDVal_StringMemRef(str_arg), &o->mem, &o->val)) {
73 ModuleLog(i, BLOG_ERROR, "failed to parse");
74 goto fail1;
75 }
76  
77 // signal up
78 NCDModuleInst_Backend_Up(i);
79 return;
80  
81 fail1:
82 NCDValMem_Free(&o->mem);
83 fail0:
84 NCDModuleInst_Backend_DeadError(i);
85 }
86  
87 static void func_die (void *vo)
88 {
89 struct instance *o = vo;
90  
91 // free mem
92 NCDValMem_Free(&o->mem);
93  
94 NCDModuleInst_Backend_Dead(o->i);
95 }
96  
97 static int func_getvar2 (void *vo, NCD_string_id_t name, NCDValMem *mem, NCDValRef *out)
98 {
99 struct instance *o = vo;
100  
101 if (name == NCD_STRING_EMPTY) {
102 *out = NCDVal_NewCopy(mem, o->val);
103 return 1;
104 }
105  
106 return 0;
107 }
108  
109 static struct NCDModule modules[] = {
110 {
111 .type = "from_string",
112 .func_new2 = func_new,
113 .func_die = func_die,
114 .func_getvar2 = func_getvar2,
115 .alloc_size = sizeof(struct instance)
116 }, {
117 .type = NULL
118 }
119 };
120  
121 const struct NCDModuleGroup ncdmodule_from_string = {
122 .modules = modules
123 };