add nodeinfoVec into trie.cpp/h

This commit is contained in:
gwdwyy 2013-07-05 18:19:23 +08:00
parent f2c5f571f2
commit 1974c49071
2 changed files with 72 additions and 34 deletions

View File

@ -24,8 +24,7 @@ namespace CppJieba
bool Trie::init(const char* const filepath)
{
char msgBuf[512];
ChUnicode chUniBuf[512];
char msgBuf[bufSize];
if(NULL != _root)
{
LogError("already initted!");
@ -48,8 +47,21 @@ namespace CppJieba
string chWord = vecBuf[0];
unsigned int count = atoi(vecBuf[1].c_str());
const string& tag = vecBuf[2];
size_t uniLen = utf8ToUnicode(chWord.c_str(), chWord.size(), chUniBuf);
_insert(chUniBuf, uniLen, count, tag);
//insert node
TrieNodeInfo nodeInfo;
nodeInfo.word = chWord;
nodeInfo.count = count;
nodeInfo.tag = tag;
bool flag = _insert(nodeInfo);
if(!flag)
{
LogError("insert node failed!");
return false;
}
}
return true;
}
@ -66,6 +78,7 @@ namespace CppJieba
_root = NULL;
return ret;
}
_nodeInfoVec.clear();
}
void Trie::display()
@ -214,20 +227,37 @@ namespace CppJieba
}
}
bool Trie::_insert(const ChUnicode* chUniStr, size_t len, unsigned int cnt, const string& tag)
{
if(0 == len)
{
LogError("input args illegal: len == 0");
return false;
}
bool Trie::_insert(const TrieNodeInfo& nodeInfo)
{
_nodeInfoVec.push_back(nodeInfo);
const string& word = nodeInfo.word;
ChUnicode chUniStr[bufSize];
memset(chUniStr, 0, sizeof(chUniStr));
size_t len = utf8ToUnicode(word.c_str(), word.size(), chUniStr);
if(0 == len)
{
return false;
}
TrieNode* p = _root;
for(int i = 0; i < len; i++)
{
ChUnicode cu = chUniStr[i];
if(NULL == p)
{
return false;
}
if(p->hmap.end() == p->hmap.find(cu))
{
TrieNode * next = new TrieNode;
TrieNode * next = NULL;
try
{
next = new TrieNode;
}
catch(const bad_alloc& e)
{
return false;
}
p->hmap[cu] = next;
p = next;
}
@ -236,7 +266,19 @@ namespace CppJieba
p = p->hmap[cu];
}
}
if(NULL == p)
{
return false;
}
p->isLeaf = true;
if(!_nodeInfoVec.empty())
{
p->nodeInfoVecPos = _nodeInfoVec.size() - 1;
}
else
{
return false;
}
return true;
}
}
@ -247,25 +289,9 @@ int main()
{
Trie trie;
trie.init("dict.utf8");
//trie.init("test/dict.txt");
//cout<<trie.begin()->count<<endl;
//return 0;
//trie.init("dict.txt");
//trie.display();
//const char * utf = "B";
//ChUnicode chUniStr[16];
//int uniLen = utf8ToUnicode(utf, sizeof(utf), chUniStr);
//cout<<trie.find(chUniStr, uniLen)<<endl;
char utf[1024] = "我来到北京清华大学3D电视";
//ChUnicode chUniStr[1024];
//cout<<sizeof(utf)<<endl;
//int uniLen = utf8ToUnicode(utf, strlen(utf), chUniStr);
vector< vector<size_t> > res;
//cout<<trie.cutUtf8(utf, res)<<endl;
trie.destroy();
//hash_map<ChUnicode, int> hmap;
//hmap[136]=1;
return 0;
}
#endif

24
Trie.h
View File

@ -20,15 +20,24 @@ namespace CppJieba
const size_t ChUniMaxLen = 1024;
typedef map<ChUnicode, struct TrieNode*> TrieNodeHashMap;
struct TrieNodeInfo
{
string word;
unsigned int count;
string tag;
TrieNodeInfo():word(),count(0),tag()
{
}
};
struct TrieNode
{
TrieNodeHashMap hmap;
bool isLeaf;
unsigned int count;
string tag;
unsigned int nodeInfoVecPos;
TrieNode()
:hmap(), isLeaf(false), count(0), tag()
:hmap(), isLeaf(false), nodeInfoVecPos(0)
{
}
};
@ -81,7 +90,7 @@ namespace CppJieba
{
private:
TrieNode* _root;
vector<TrieNode> _nodeVec;
vector<TrieNodeInfo> _nodeInfoVec;
public:
typedef TrieNodeIterator iterator;
@ -110,7 +119,10 @@ namespace CppJieba
private:
bool _destroyNode(TrieNode* node);
void _display(TrieNode* node, int level);
bool _insert(const ChUnicode* chUniBuf, size_t len, unsigned int cnt, const string& tag);
bool _insert(const TrieNodeInfo& nodeInfo);
private:
enum {bufSize = 1024};
};
}