[libvirt] [PATCH 04/21] Introduce virTypedParamsReplaceString internal API
---
src/libvirt_private.syms | 1 +
src/util/virtypedparam.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virtypedparam.h | 5 +++++
3 files changed, 64 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index ae9f356..4e01073 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1900,6 +1900,7 @@ virTPMCreateCancelPath;
virTypedParameterAssign;
virTypedParameterAssignFromStr;
virTypedParamsCheck;
+virTypedParamsReplaceString;
virTypedParamsValidate;
diff --git a/src/util/virtypedparam.c b/src/util/virtypedparam.c
index 825148b..760bb05 100644
--- a/src/util/virtypedparam.c
+++ b/src/util/virtypedparam.c
@@ -285,6 +285,64 @@ cleanup:
}
+/**
+ * virTypedParamsReplaceString:
+ * @params: pointer to the array of typed parameters
+ * @nparams: number of parameters in the @params array
+ * @name: name of the parameter to set
+ * @value: the value to store into the parameter
+ *
+ * Sets new value @value to parameter called @name with char * type. If the
+ * parameter does not exist yet in @params, it is automatically created and
+ * @naprams is incremented by one. Otherwise current value of the parameter
+ * is freed on success. The function creates its own copy of @value string,
+ * which needs to be freed using virTypedParamsFree or virTypedParamsClear.
+ *
+ * Returns 0 on success, -1 on error.
+ */
+int
+virTypedParamsReplaceString(virTypedParameterPtr *params,
+ int *nparams,
+ const char *name,
+ const char *value)
+{
+ char *str = NULL;
+ char *old = NULL;
+ size_t n = *nparams;
+ virTypedParameterPtr param;
+
+ virResetLastError();
+
+ param = virTypedParamsGet(*params, n, name);
+ if (param) {
+ old = param->value.s;
+ } else if (VIR_EXPAND_N(*params, n, 1) < 0) {
+ virReportOOMError();
+ goto error;
+ } else {
+ param = *params + n - 1;
+ }
+
+ if (VIR_STRDUP(str, value) < 0)
+ goto error;
+
+ if (virTypedParameterAssign(param, name,
+ VIR_TYPED_PARAM_STRING, str) < 0) {
+ param->value.s = old;
+ VIR_FREE(str);
+ goto error;
+ }
+ VIR_FREE(old);
+
+ *nparams = n;
+ return 0;
+
+error:
+ virDispatchError(NULL);
+ return -1;
+}
+
+
/* The following APIs are public and their signature may never change. */
/**
diff --git a/src/util/virtypedparam.h b/src/util/virtypedparam.h
index b0f8522..6eb61c4 100644
--- a/src/util/virtypedparam.h
+++ b/src/util/virtypedparam.h
@@ -44,4 +44,9 @@ int virTypedParameterAssignFromStr(virTypedParameterPtr param,
const char *val)
ATTRIBUTE_RETURN_CHECK;
+int virTypedParamsReplaceString(virTypedParameterPtr *params,
+ int *nparams,
+ const char *name,
+ const char *value);
+
#endif /* __VIR_TYPED_PARAM_H */
--
1.8.2.1