[C][Client] Support progress function of libcurl (#7974)

Author: ityuhui

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

@@ -13,6 +13,8 @@ apiClient_t *apiClient_create() {
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     apiClient->response_code = 0;
     {{#hasAuthMethods}}
     {{#authMethods}}
@@ -58,6 +60,8 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     apiClient->response_code = 0;
     {{#hasAuthMethods}}
     {{#authMethods}}
@@ -92,6 +96,8 @@ void apiClient_free(apiClient_t *apiClient) {
         free(apiClient->basePath);
     }
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     {{#hasAuthMethods}}
     {{#authMethods}}
     {{#isBasic}}
@@ -434,6 +440,14 @@ void apiClient_invoke(apiClient_t    *apiClient,
             }
         }
 
+        if (apiClient->progress_func != NULL) {
+            curl_easy_setopt(handle, CURLOPT_XFERINFOFUNCTION, apiClient->progress_func);
+            if (apiClient->progress_data != NULL) {
+                curl_easy_setopt(handle, CURLOPT_XFERINFODATA, apiClient->progress_data);
+            }
+            curl_easy_setopt(handle, CURLOPT_NOPROGRESS, 0L);
+        }
+
         {{#hasAuthMethods}}
         {{#authMethods}}
         {{#isApiKey}}

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

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <curl/curl.h>
 #include "../include/list.h"
 #include "../include/keyValuePair.h"
 #include "../include/binary.h"
@@ -24,6 +25,8 @@ typedef struct apiClient_t {
     void *dataReceived;
     long dataReceivedLen;
     void (*data_callback_func)(void **, long *);
+    int (*progress_func)(void *, curl_off_t, curl_off_t, curl_off_t, curl_off_t);
+    void *progress_data;
     long response_code;
     {{#hasAuthMethods}}
     {{#authMethods}}

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

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <curl/curl.h>
 #include "../include/list.h"
 #include "../include/keyValuePair.h"
 #include "../include/binary.h"
@@ -24,6 +25,8 @@ typedef struct apiClient_t {
     void *dataReceived;
     long dataReceivedLen;
     void (*data_callback_func)(void **, long *);
+    int (*progress_func)(void *, curl_off_t, curl_off_t, curl_off_t, curl_off_t);
+    void *progress_data;
     long response_code;
     list_t *apiKeys_api_key;
     char *accessToken;

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

@@ -13,6 +13,8 @@ apiClient_t *apiClient_create() {
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     apiClient->response_code = 0;
     apiClient->apiKeys_api_key = NULL;
     apiClient->accessToken = NULL;
@@ -40,6 +42,8 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
     apiClient->dataReceived = NULL;
     apiClient->dataReceivedLen = 0;
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     apiClient->response_code = 0;
     if(apiKeys_api_key!= NULL) {
         apiClient->apiKeys_api_key = list_create();
@@ -62,6 +66,8 @@ void apiClient_free(apiClient_t *apiClient) {
         free(apiClient->basePath);
     }
     apiClient->data_callback_func = NULL;
+    apiClient->progress_func = NULL;
+    apiClient->progress_data = NULL;
     if(apiClient->apiKeys_api_key) {
         listEntry_t *listEntry = NULL;
         list_ForEach(listEntry, apiClient->apiKeys_api_key) {
@@ -388,6 +394,14 @@ void apiClient_invoke(apiClient_t    *apiClient,
             }
         }
 
+        if (apiClient->progress_func != NULL) {
+            curl_easy_setopt(handle, CURLOPT_XFERINFOFUNCTION, apiClient->progress_func);
+            if (apiClient->progress_data != NULL) {
+                curl_easy_setopt(handle, CURLOPT_XFERINFODATA, apiClient->progress_data);
+            }
+            curl_easy_setopt(handle, CURLOPT_NOPROGRESS, 0L);
+        }
+
         // this would only be generated for apiKey authentication
         if (apiClient->apiKeys_api_key != NULL)
         {