mirror of https://gitee.com/openkylin/qemu.git
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/*
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* QAPI util functions
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*
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* Authors:
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* Hu Tao <hutao@cn.fujitsu.com>
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* Peter Lieven <pl@kamp.de>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/ctype.h"
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#include "qapi/qmp/qerror.h"
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const char *qapi_enum_lookup(const QEnumLookup *lookup, int val)
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{
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assert(val >= 0 && val < lookup->size);
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return lookup->array[val];
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}
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int qapi_enum_parse(const QEnumLookup *lookup, const char *buf,
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int def, Error **errp)
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{
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int i;
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if (!buf) {
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return def;
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}
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for (i = 0; i < lookup->size; i++) {
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if (!strcmp(buf, lookup->array[i])) {
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return i;
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}
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}
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error_setg(errp, "invalid parameter value: %s", buf);
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return def;
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}
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bool qapi_bool_parse(const char *name, const char *value, bool *obj, Error **errp)
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{
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if (g_str_equal(value, "on") ||
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g_str_equal(value, "yes") ||
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g_str_equal(value, "true") ||
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g_str_equal(value, "y")) {
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*obj = true;
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return true;
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}
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if (g_str_equal(value, "off") ||
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g_str_equal(value, "no") ||
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g_str_equal(value, "false") ||
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g_str_equal(value, "n")) {
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*obj = false;
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return true;
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}
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error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name,
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"'on' or 'off'");
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return false;
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}
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/*
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* Parse a valid QAPI name from @str.
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* A valid name consists of letters, digits, hyphen and underscore.
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* It may be prefixed by __RFQDN_ (downstream extension), where RFQDN
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* may contain only letters, digits, hyphen and period.
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* The special exception for enumeration names is not implemented.
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* See docs/devel/qapi-code-gen.txt for more on QAPI naming rules.
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* Keep this consistent with scripts/qapi.py!
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* If @complete, the parse fails unless it consumes @str completely.
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* Return its length on success, -1 on failure.
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*/
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int parse_qapi_name(const char *str, bool complete)
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{
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const char *p = str;
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if (*p == '_') { /* Downstream __RFQDN_ */
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p++;
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if (*p != '_') {
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return -1;
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}
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while (*++p) {
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if (!qemu_isalnum(*p) && *p != '-' && *p != '.') {
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break;
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}
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}
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if (*p != '_') {
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return -1;
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}
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p++;
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}
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if (!qemu_isalpha(*p)) {
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return -1;
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}
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while (*++p) {
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if (!qemu_isalnum(*p) && *p != '-' && *p != '_') {
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break;
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}
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}
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if (complete && *p) {
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return -1;
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}
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return p - str;
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}
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