[C][Client]Support data callback function (#7467)

Author: ityuhui

modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache

@@ -13,6 +13,7 @@ apiClient_t *apiClient_create() {
     apiClient->sslConfig = NULL;
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
+    apiClient->data_callback_func = NULL;
     apiClient->response_code = 0;
     {{#hasAuthMethods}}
     {{#authMethods}}
@@ -58,6 +59,7 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
 
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
+    apiClient->data_callback_func = NULL;
     apiClient->response_code = 0;
     {{#hasAuthMethods}}
     {{#authMethods}}
@@ -91,6 +93,7 @@ void apiClient_free(apiClient_t *apiClient) {
     if(apiClient->basePath) {
         free(apiClient->basePath);
     }
+    apiClient->data_callback_func = NULL;
     {{#hasAuthMethods}}
     {{#authMethods}}
     {{#isBasic}}
@@ -558,6 +561,10 @@ size_t writeDataCallback(void *buffer, size_t size, size_t nmemb, void *userp) {
     apiClient->dataReceived = (char *)realloc( apiClient->dataReceived, apiClient->dataReceivedLen + size_this_time + 1);
     memcpy(apiClient->dataReceived + apiClient->dataReceivedLen, buffer, size_this_time);
     apiClient->dataReceivedLen += size_this_time;
+    ((char*)apiClient->dataReceived)[apiClient->dataReceivedLen] = '\0'; // the space size of (apiClient->dataReceived) = dataReceivedLen + 1
+    if (apiClient->data_callback_func) {
+        apiClient->data_callback_func(&apiClient->dataReceived, &apiClient->dataReceivedLen);
+    }
     return size_this_time;
 }
 

modules/openapi-generator/src/main/resources/C-libcurl/apiClient.h.mustache

@@ -23,6 +23,7 @@ typedef struct apiClient_t {
     sslConfig_t *sslConfig;
     void *dataReceived;
     long dataReceivedLen;
+    void (*data_callback_func)(void **, long *);
     long response_code;
     {{#hasAuthMethods}}
     {{#authMethods}}

modules/openapi-generator/src/main/resources/C-libcurl/list.c.mustache

@@ -183,3 +183,18 @@ char* findStrInStrList(list_t *strList, const char *str)
 
     return NULL;
 }
+
+void clear_and_free_string_list(list_t *list)
+{
+    if (!list) {
+        return;
+    }
+
+    listEntry_t *listEntry = NULL;
+    list_ForEach(listEntry, list) {
+        char *list_item = listEntry->data;
+        free(list_item);
+        list_item = NULL;
+    }
+    list_free(list);
+}

modules/openapi-generator/src/main/resources/C-libcurl/list.h.mustache

@@ -38,4 +38,5 @@ void listEntry_printAsInt(listEntry_t* listEntry, void *additionalData);
 void listEntry_free(listEntry_t *listEntry, void *additionalData);
 
 char* findStrInStrList(list_t* strList, const char* str);
+void clear_and_free_string_list(list_t * list);
 #endif // INCLUDE_LIST_H

samples/client/petstore/c/include/apiClient.h

@@ -23,6 +23,7 @@ typedef struct apiClient_t {
     sslConfig_t *sslConfig;
     void *dataReceived;
     long dataReceivedLen;
+    void (*data_callback_func)(void **, long *);
     long response_code;
     list_t *apiKeys_api_key;
     char *accessToken;

samples/client/petstore/c/include/list.h

@@ -38,4 +38,5 @@ void listEntry_printAsInt(listEntry_t* listEntry, void *additionalData);
 void listEntry_free(listEntry_t *listEntry, void *additionalData);
 
 char* findStrInStrList(list_t* strList, const char* str);
+void clear_and_free_string_list(list_t * list);
 #endif // INCLUDE_LIST_H

samples/client/petstore/c/src/apiClient.c

@@ -13,6 +13,7 @@ apiClient_t *apiClient_create() {
     apiClient->sslConfig = NULL;
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
+    apiClient->data_callback_func = NULL;
     apiClient->response_code = 0;
     apiClient->apiKeys_api_key = NULL;
     apiClient->accessToken = NULL;
@@ -40,6 +41,7 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
 
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
+    apiClient->data_callback_func = NULL;
     apiClient->response_code = 0;
     if(apiKeys_api_key!= NULL) {
         apiClient->apiKeys_api_key = list_create();
@@ -61,6 +63,7 @@ void apiClient_free(apiClient_t *apiClient) {
     if(apiClient->basePath) {
         free(apiClient->basePath);
     }
+    apiClient->data_callback_func = NULL;
     if(apiClient->apiKeys_api_key) {
         listEntry_t *listEntry = NULL;
         list_ForEach(listEntry, apiClient->apiKeys_api_key) {
@@ -464,6 +467,10 @@ size_t writeDataCallback(void *buffer, size_t size, size_t nmemb, void *userp) {
     apiClient->dataReceived = (char *)realloc( apiClient->dataReceived, apiClient->dataReceivedLen + size_this_time + 1);
     memcpy(apiClient->dataReceived + apiClient->dataReceivedLen, buffer, size_this_time);
     apiClient->dataReceivedLen += size_this_time;
+    ((char*)apiClient->dataReceived)[apiClient->dataReceivedLen] = '\0'; // the space size of (apiClient->dataReceived) = dataReceivedLen + 1
+    if (apiClient->data_callback_func) {
+        apiClient->data_callback_func(&apiClient->dataReceived, &apiClient->dataReceivedLen);
+    }
     return size_this_time;
 }
 

samples/client/petstore/c/src/list.c

@@ -183,3 +183,18 @@ char* findStrInStrList(list_t *strList, const char *str)
 
     return NULL;
 }
+
+void clear_and_free_string_list(list_t *list)
+{
+    if (!list) {
+        return;
+    }
+
+    listEntry_t *listEntry = NULL;
+    list_ForEach(listEntry, list) {
+        char *list_item = listEntry->data;
+        free(list_item);
+        list_item = NULL;
+    }
+    list_free(list);
+}