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f7abe0ecd4
Currently, a FOO_lookup is an array of strings terminated by a NULL sentinel. A future patch will generate enums with "holes". NULL-termination will cease to work then. To prepare for that, store the length in the FOO_lookup by wrapping it in a struct and adding a member for the length. The sentinel will be dropped next. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170822132255.23945-13-marcandre.lureau@redhat.com> [Basically redone] Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1503564371-26090-16-git-send-email-armbru@redhat.com> [Rebased]
88 lines
2 KiB
C
88 lines
2 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-common.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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/*
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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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