diff options
Diffstat (limited to 'ndb/include/util/ConfigValues.hpp')
| -rw-r--r-- | ndb/include/util/ConfigValues.hpp | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/ndb/include/util/ConfigValues.hpp b/ndb/include/util/ConfigValues.hpp new file mode 100644 index 00000000000..48e1363bf4a --- /dev/null +++ b/ndb/include/util/ConfigValues.hpp @@ -0,0 +1,252 @@ +#ifndef __CONFIG_VALUES_HPP +#define __CONFIG_VALUES_HPP + +#include <ndb_types.h> +#include <UtilBuffer.hpp> + +class ConfigValues { + friend class ConfigValuesFactory; + ConfigValues(Uint32 sz, Uint32 data); + +public: + ~ConfigValues(); + + enum ValueType { + InvalidType = 0, + IntType = 1, + StringType = 2, + SectionType = 3, + Int64Type = 4 + }; + + struct Entry { + Uint32 m_key; + ValueType m_type; + union { + Uint32 m_int; + const char * m_string; + Uint64 m_int64; + }; + }; + + class ConstIterator { + friend class ConfigValuesFactory; + const ConfigValues & m_cfg; + protected: + Uint32 m_currentSection; + public: + ConstIterator(const ConfigValues&c) : m_cfg(c) { m_currentSection = 0;} + + bool openSection(Uint32 key, Uint32 no); + bool closeSection(); + + bool get(Uint32 key, Entry *) const; + + bool get(Uint32 key, Uint32 * value) const; + bool get(Uint32 key, Uint64 * value) const; + bool get(Uint32 key, const char ** value) const; + bool getTypeOf(Uint32 key, ValueType * type) const; + + Uint32 get(Uint32 key, Uint32 notFound) const; + Uint64 get64(Uint32 key, Uint64 notFound) const; + const char * get(Uint32 key, const char * notFound) const; + ValueType getTypeOf(Uint32 key) const; + }; + + class Iterator : public ConstIterator { + ConfigValues & m_cfg; + public: + Iterator(ConfigValues&c) : ConstIterator(c), m_cfg(c) {} + + bool set(Uint32 key, Uint32 value); + bool set(Uint32 key, Uint64 value); + bool set(Uint32 key, const char * value); + }; + + Uint32 getPackedSize() const; // get size in bytes needed to pack + Uint32 pack(UtilBuffer&) const; + Uint32 pack(void * dst, Uint32 len) const;// pack into dst(of len %d); + +private: + friend class Iterator; + friend class ConstIterator; + + bool getByPos(Uint32 pos, Entry *) const; + Uint64 & get64(Uint32 index) const; + char * & getString(Uint32 index) const; + + Uint32 m_size; + Uint32 m_dataSize; + Uint32 m_stringCount; + Uint32 m_int64Count; + + Uint32 m_values[1]; + void * m_data[1]; +}; + +class ConfigValuesFactory { + Uint32 m_currentSection; +public: + Uint32 m_sectionCounter; + Uint32 m_freeKeys; + Uint32 m_freeData; + +public: + ConfigValuesFactory(Uint32 keys = 50, Uint32 data = 10); // Initial + ConfigValuesFactory(ConfigValues * m_cfg); // + + ConfigValues * m_cfg; + ConfigValues * getConfigValues(); + + bool openSection(Uint32 key, Uint32 no); + bool put(const ConfigValues::Entry & ); + bool put(Uint32 key, Uint32 value); + bool put64(Uint32 key, Uint64 value); + bool put(Uint32 key, const char * value); + bool closeSection(); + + void expand(Uint32 freeKeys, Uint32 freeData); + void shrink(); + + bool unpack(const UtilBuffer&); + bool unpack(const void * src, Uint32 len); + + static ConfigValues * extractCurrentSection(const ConfigValues::ConstIterator &); + +private: + static ConfigValues * create(Uint32 keys, Uint32 data); + void put(const ConfigValues & src); +}; + +inline +bool +ConfigValues::ConstIterator::get(Uint32 key, Uint32 * value) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == IntType){ + * value = tmp.m_int; + return true; + } + return false; +} + +inline +bool +ConfigValues::ConstIterator::get(Uint32 key, Uint64 * value) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == Int64Type){ + * value = tmp.m_int64; + return true; + } + return false; +} + +inline +bool +ConfigValues::ConstIterator::get(Uint32 key, const char ** value) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == StringType){ + * value = tmp.m_string; + return true; + } + return false; +} + +inline +bool +ConfigValues::ConstIterator::getTypeOf(Uint32 key, ValueType * type) const{ + Entry tmp; + if(get(key, &tmp)){ + * type = tmp.m_type; + return true; + } + return false; +} + +inline +Uint32 +ConfigValues::ConstIterator::get(Uint32 key, Uint32 notFound) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == IntType){ + return tmp.m_int; + } + return notFound; +} + +inline +Uint64 +ConfigValues::ConstIterator::get64(Uint32 key, Uint64 notFound) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == Int64Type){ + return tmp.m_int64; + } + return notFound; +} + +inline +const char * +ConfigValues::ConstIterator::get(Uint32 key, const char * notFound) const { + Entry tmp; + if(get(key, &tmp) && tmp.m_type == StringType){ + return tmp.m_string; + } + return notFound; +} + +inline +ConfigValues::ValueType +ConfigValues::ConstIterator::getTypeOf(Uint32 key) const{ + Entry tmp; + if(get(key, &tmp)){ + return tmp.m_type; + } + return ConfigValues::InvalidType; +} + +inline +bool +ConfigValuesFactory::put(Uint32 key, Uint32 val){ + ConfigValues::Entry tmp; + tmp.m_key = key; + tmp.m_type = ConfigValues::IntType; + tmp.m_int = val; + return put(tmp); +} + +inline +bool +ConfigValuesFactory::put64(Uint32 key, Uint64 val){ + ConfigValues::Entry tmp; + tmp.m_key = key; + tmp.m_type = ConfigValues::Int64Type; + tmp.m_int64 = val; + return put(tmp); +} + +inline +bool +ConfigValuesFactory::put(Uint32 key, const char * val){ + ConfigValues::Entry tmp; + tmp.m_key = key; + tmp.m_type = ConfigValues::StringType; + tmp.m_string = val; + return put(tmp); +} + +inline +Uint32 +ConfigValues::pack(UtilBuffer& buf) const { + Uint32 len = getPackedSize(); + void * tmp = buf.append(len); + if(tmp == 0){ + return 0; + } + return pack(tmp, len); +} + +inline +bool +ConfigValuesFactory::unpack(const UtilBuffer& buf){ + return unpack(buf.get_data(), buf.length()); +} + +#endif |