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Added helpers for dealing with enumerations
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@ -1,3 +1,8 @@
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Tue Jun 24 15:59:33 EST 2008 Daniel P. Berrange <berrange@redhat.com>
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* src/util.h, src/util.c: Added helpers for managing enumerations
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and conversion to/from string vs integer format
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Tue Jun 24 15:29:33 EST 2008 Daniel P. Berrange <berrange@redhat.com>
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* src/storage_backend.h, src/storage_backend.c: Fix const-ness
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22
src/util.c
22
src/util.c
@ -764,6 +764,28 @@ virParseMacAddr(const char* str, unsigned char *addr)
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return -1;
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}
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int virEnumFromString(const char *const*types,
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unsigned int ntypes,
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const char *type)
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{
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unsigned int i;
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for (i = 0 ; i < ntypes ; i++)
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if (STREQ(types[i], type))
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return i;
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return -1;
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}
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const char *virEnumToString(const char *const*types,
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unsigned int ntypes,
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int type)
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{
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if (type < 0 || type >= ntypes)
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return NULL;
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return types[type];
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}
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/* Translates a device name of the form (regex) "[fhv]d[a-z]+" into
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* the corresponding index (e.g. sda => 1, hdz => 26, vdaa => 27)
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* @param name The name of the device
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28
src/util.h
28
src/util.h
@ -25,6 +25,7 @@
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#define __VIR_UTIL_H__
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#include "util-lib.h"
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#include "verify.h"
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int virExec(virConnectPtr conn, char **argv, int *retpid,
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int infd, int *outfd, int *errfd);
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@ -88,4 +89,31 @@ int virParseMacAddr(const char* str, unsigned char *addr);
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int virDiskNameToIndex(const char* str);
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int virEnumFromString(const char *const*types,
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unsigned int ntypes,
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const char *type);
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const char *virEnumToString(const char *const*types,
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unsigned int ntypes,
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int type);
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#define VIR_ENUM_IMPL(name, lastVal, ...) \
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static const char const *name ## TypeList[] = { __VA_ARGS__ }; \
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verify(ARRAY_CARDINALITY(name ## TypeList) == lastVal); \
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const char *name ## TypeToString(int type) { \
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return virEnumToString(name ## TypeList, \
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ARRAY_CARDINALITY(name ## TypeList), \
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type); \
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} \
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int name ## TypeFromString(const char *type) { \
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return virEnumFromString(name ## TypeList, \
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ARRAY_CARDINALITY(name ## TypeList), \
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type); \
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}
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#define VIR_ENUM_DECL(name) \
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const char *name ## TypeToString(int type); \
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int name ## TypeFromString(const char*type);
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#endif /* __VIR_UTIL_H__ */
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