1 | /* |
2 | * QAPI util functions |
3 | * |
4 | * Authors: |
5 | * Hu Tao <hutao@cn.fujitsu.com> |
6 | * Peter Lieven <pl@kamp.de> |
7 | * |
8 | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. |
9 | * See the COPYING.LIB file in the top-level directory. |
10 | * |
11 | */ |
12 | |
13 | #include "qemu/osdep.h" |
14 | #include "qapi/error.h" |
15 | #include "qemu/ctype.h" |
16 | |
17 | const char *qapi_enum_lookup(const QEnumLookup *lookup, int val) |
18 | { |
19 | assert(val >= 0 && val < lookup->size); |
20 | |
21 | return lookup->array[val]; |
22 | } |
23 | |
24 | int qapi_enum_parse(const QEnumLookup *lookup, const char *buf, |
25 | int def, Error **errp) |
26 | { |
27 | int i; |
28 | |
29 | if (!buf) { |
30 | return def; |
31 | } |
32 | |
33 | for (i = 0; i < lookup->size; i++) { |
34 | if (!strcmp(buf, lookup->array[i])) { |
35 | return i; |
36 | } |
37 | } |
38 | |
39 | error_setg(errp, "invalid parameter value: %s" , buf); |
40 | return def; |
41 | } |
42 | |
43 | /* |
44 | * Parse a valid QAPI name from @str. |
45 | * A valid name consists of letters, digits, hyphen and underscore. |
46 | * It may be prefixed by __RFQDN_ (downstream extension), where RFQDN |
47 | * may contain only letters, digits, hyphen and period. |
48 | * The special exception for enumeration names is not implemented. |
49 | * See docs/devel/qapi-code-gen.txt for more on QAPI naming rules. |
50 | * Keep this consistent with scripts/qapi.py! |
51 | * If @complete, the parse fails unless it consumes @str completely. |
52 | * Return its length on success, -1 on failure. |
53 | */ |
54 | int parse_qapi_name(const char *str, bool complete) |
55 | { |
56 | const char *p = str; |
57 | |
58 | if (*p == '_') { /* Downstream __RFQDN_ */ |
59 | p++; |
60 | if (*p != '_') { |
61 | return -1; |
62 | } |
63 | while (*++p) { |
64 | if (!qemu_isalnum(*p) && *p != '-' && *p != '.') { |
65 | break; |
66 | } |
67 | } |
68 | |
69 | if (*p != '_') { |
70 | return -1; |
71 | } |
72 | p++; |
73 | } |
74 | |
75 | if (!qemu_isalpha(*p)) { |
76 | return -1; |
77 | } |
78 | while (*++p) { |
79 | if (!qemu_isalnum(*p) && *p != '-' && *p != '_') { |
80 | break; |
81 | } |
82 | } |
83 | |
84 | if (complete && *p) { |
85 | return -1; |
86 | } |
87 | return p - str; |
88 | } |
89 | |