整理代码

util/xpack/example/sqlite.cpp

@@ -0,0 +1,61 @@
+#include <iostream>
+#include <xpack/sqlite.h>
+#include <xpack/json.h>
+
+using namespace std;
+
+struct VID {
+    int64_t Vid;
+    int64_t vlen;
+    string  sid;
+    int64_t level;
+    XPACK(A(Vid, "db:vid"), O(vlen, sid, level));
+};
+
+int main(int argc, char **argv) {
+    (void)argc;
+    char *errMsg = NULL;
+    sqlite *pDB = sqlite_open("./test.db", 0, &errMsg);
+    if (NULL == pDB) {
+        cout<<"open sqlite db fail:"<<errMsg<<endl;
+        sqlite_freemem(errMsg);
+        return -1;
+    }
+
+    int nCols = 0;
+    int nRows = 0;
+    char **azResult = NULL;
+
+    int ret = sqlite_get_table(pDB, argv[1], &azResult, &nRows, &nCols, &errMsg);
+    if (ret != SQLITE_OK) {
+        cout<<"query sqlite db fail:"<<ret<<endl;
+        return -1;
+    }
+
+    cout<<nRows<<','<<nCols<<endl;
+    for (int i=0; i<nCols; ++i) {
+        cout<<azResult[i]<<' ';
+    }
+    cout<<endl;
+    int idx = nCols;
+    for (int i=0; i<nRows; ++i) {
+        for (int j=0; j<nCols; ++j, ++idx) {
+            if (NULL == azResult[idx]) {
+                cout<<"NULL"<<' ';
+            } else {
+                cout<<azResult[idx]<<' ';
+            }
+        }
+        cout<<endl;
+    }
+
+    if (NULL != azResult) {
+        sqlite_free_table(azResult);
+    }
+    if (NULL != errMsg) {
+        sqlite_freemem(errMsg);
+    }
+    sqlite_close(pDB);
+
+    return 0;
+}