1 /*---------------------------------------------------------------------------*
2 * CommandLine.c *
3 * *
4 * Copyright 2007, 2008 Nuance Communciations, Inc. *
5 * *
6 * Licensed under the Apache License, Version 2.0 (the 'License'); *
7 * you may not use this file except in compliance with the License. *
8 * *
9 * You may obtain a copy of the License at *
10 * http://www.apache.org/licenses/LICENSE-2.0 *
11 * *
12 * Unless required by applicable law or agreed to in writing, software *
13 * distributed under the License is distributed on an 'AS IS' BASIS, *
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
15 * See the License for the specific language governing permissions and *
16 * limitations under the License. *
17 * *
18 *---------------------------------------------------------------------------*/
19
20 #include "ESR_CommandLine.h"
21
ESR_CommandLineGetValue(int argc,const LCHAR * argv[],LCHAR * key,LCHAR * value,size_t * len)22 ESR_ReturnCode ESR_CommandLineGetValue(int argc, const LCHAR * argv[],
23 LCHAR* key, LCHAR* value, size_t* len)
24 {
25 const LCHAR* lastKeyFound = NULL;
26
27 while (--argc > 0 && **++argv)
28 {
29 if (**argv != '-')
30 {
31 /* got value */
32 if (key == NULL)
33 {
34 /* but we don't have any key to associate it with */
35 continue;
36 }
37 else
38 {
39 if (lastKeyFound != NULL && LSTRCMP(lastKeyFound, key) == 0)
40 {
41 if (LSTRLEN(*argv) + 1 > *len)
42 {
43 *len = LSTRLEN(*argv) + 1;
44 return ESR_BUFFER_OVERFLOW;
45 }
46 *len = LSTRLEN(*argv) + 1;
47 LSTRCPY(value, *argv);
48 return ESR_SUCCESS;
49 }
50 }
51 }
52 else
53 {
54 /* got key */
55 if (lastKeyFound != NULL && LSTRCMP(lastKeyFound, key) == 0)
56 {
57 *len = 1;
58 LSTRCPY(value, L(""));
59 return ESR_SUCCESS;
60 }
61 lastKeyFound = *argv + 1;
62 }
63 }
64
65 /* Handle case where last argument is a key with no value */
66 if (lastKeyFound != NULL && LSTRCMP(lastKeyFound, key) == 0)
67 {
68 *len = 1;
69 LSTRCPY(value, L(""));
70 return ESR_SUCCESS;
71 }
72 return ESR_NO_MATCH_ERROR;
73 }
74