(C) Keeping Query Params in a Hashtable

Demonstrates how to use a Chilkat Hashtable to hold query params and re-emit as a query param string.

Note: The ToQueryString method was added in Chilkat v9.5.0.92.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkHashtable.h>
#include <C_CkStringTable.h>

void ChilkatSample(void)
    {
    HCkHashtable ht;
    BOOL success;
    const char *qp;
    HCkStringTable keys;
    int numKeys;
    const char *key;
    const char *val;
    int i;

    ht = CkHashtable_Create();

    // Add name/value pairs from an existing query param string where the values are already URL encoded.
    qp = "txt=this%20is%20a%20test&color=blue&fruits=apples%26oranges";
    success = CkHashtable_AddQueryParams(ht,qp);

    // Add some additional name/value pairs.
    CkHashtable_AddStr(ht,"name","Jack Sparrow");
    CkHashtable_AddStr(ht,"movie","Pirates of the Carribean");

    // Iterate over the hash table to show what we have..

    keys = CkStringTable_Create();
    CkHashtable_GetKeys(ht,keys);
    numKeys = CkStringTable_getCount(keys);

    i = 0;
    while (i < numKeys) {
        key = CkStringTable_stringAt(keys,i);
        val = CkHashtable_lookupStr(ht,key);
        printf("%s = %s\n",key,val);
        i = i + 1;
    }

    // Output for the above loop:

    // color = blue
    // name = Jack Sparrow
    // fruits = apples&oranges
    // txt = this is a test
    // movie = Pirates of the Carribean

    // Get all name/value pairs as a query parm string with values URL encoded
    qp = CkHashtable_toQueryString(ht);
    printf("%s\n",qp);

    // Result:
    // color=blue&name=Jack%20Sparrow&fruits=apples%26oranges&txt=this%20is%20a%20test&movie=Pirates%20of%20the%20Carribean


    CkHashtable_Dispose(ht);
    CkStringTable_Dispose(keys);

    }