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authorAndy Cedilnik <andy.cedilnik@kitware.com>2005-06-24 13:02:17 (GMT)
committerAndy Cedilnik <andy.cedilnik@kitware.com>2005-06-24 13:02:17 (GMT)
commit7c730973bba620ba50e02fb1330e99c2230d3d8b (patch)
tree08e6f54fd0f1b53a52bbdbe29db25171ddf81526 /Utilities/cmcurl/Testing/getinmemory.c
parentc4036bd94240d4850703bbe62dbdcf3ff34bb3cd (diff)
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ENH: Initial import
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diff --git a/Utilities/cmcurl/Testing/getinmemory.c b/Utilities/cmcurl/Testing/getinmemory.c
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+/*****************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * $Id$
+ *
+ * Example source code to show how the callback function can be used to
+ * download data into a chunk of memory instead of storing it in a file.
+ *
+ * This exact source code has not been verified to work.
+ */
+
+/* to make this work under windows, use the win32-functions from the
+ win32socket.c file as well */
+
+#include "curl/curl.h"
+#include "curl/types.h"
+#include "curl/easy.h"
+
+struct MemoryStruct {
+ char *memory;
+ size_t size;
+};
+
+size_t
+WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
+{
+ register int realsize = size * nmemb;
+ struct MemoryStruct *mem = (struct MemoryStruct *)data;
+
+ mem->memory = (char *)realloc(mem->memory, mem->size + realsize + 1);
+ if (mem->memory) {
+ memcpy(&(mem->memory[mem->size]), ptr, realsize);
+ mem->size += realsize;
+ mem->memory[mem->size] = 0;
+ }
+ return realsize;
+}
+
+int main(int argc, char **argv)
+{
+ CURL *curl_handle;
+
+ struct MemoryStruct chunk;
+
+ chunk.memory=NULL; /* we expect realloc(NULL, size) to work */
+ chunk.size = 0; /* no data at this point */
+
+ curl_global_init(CURL_GLOBAL_DEFAULT);
+
+ /* init the curl session */
+ curl_handle = curl_easy_init();
+
+ /* specify URL to get */
+ curl_easy_setopt(curl_handle, CURLOPT_URL, "http://www.cmake.org/HTML/Index.html");
+
+ /* send all data to this function */
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+
+ /* we pass our 'chunk' struct to the callback function */
+ curl_easy_setopt(curl_handle, CURLOPT_FILE, (void *)&chunk);
+
+ /* get it! */
+ curl_easy_perform(curl_handle);
+
+ /* cleanup curl stuff */
+ curl_easy_cleanup(curl_handle);
+
+ /*
+ * Now, our chunk.memory points to a memory block that is chunk.size
+ * bytes big and contains the remote file.
+ *
+ * Do something nice with it!
+ */
+
+ /* For example display it... */
+ write(1, chunk.memory, chunk.size);
+
+ return 0;
+}