examples: new FTP wildcard showcase

1 files changed, 136 insertions, 0 deletions

diff --git a/docs/examples/ftp-wildcard.c b/docs/examples/ftp-wildcard.c
new file mode 100644
index 000000000..732515c7a
--- /dev/null
+++ b/docs/examples/ftp-wildcard.c
@@ -0,0 +1,136 @@
+/*****************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ */
+
+#include <curl/curl.h>
+#include <stdio.h>
+
+struct callback_data {
+  FILE *output;
+};
+
+static long file_is_comming(struct curl_fileinfo *finfo,
+                            struct callback_data *data,
+                            int remains);
+
+static long file_is_downloaded(struct callback_data *data);
+
+static size_t write_it(char *buff, size_t size, size_t nmemb,
+                       struct callback_data *data);
+
+int main(int argc, char **argv)
+{
+  int rc = CURLE_OK;
+
+  /* curl easy handle */
+  CURL *handle;
+
+  /* help data */
+  struct callback_data data = { 0 };
+
+  /* global initialization */
+  rc = curl_global_init(CURL_GLOBAL_ALL);
+  if(rc)
+    return rc;
+
+  /* initialization of easy handle */
+  handle = curl_easy_init();
+  if(!handle) {
+    curl_global_cleanup();
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  /* turn on wildcard matching */
+  curl_easy_setopt(handle, CURLOPT_WILDCARDMATCH, 1L);
+
+  /* callback is called before download of concrete file started */
+  curl_easy_setopt(handle, CURLOPT_CHUNK_BGN_FUNCTION, file_is_comming);
+
+  /* callback is called after data from the file have been transferred */
+  curl_easy_setopt(handle, CURLOPT_CHUNK_END_FUNCTION, file_is_downloaded);
+
+  /* this callback will write contents into files */
+  curl_easy_setopt(handle, CURLOPT_WRITEFUNCTION, write_it);
+
+  /* put transfer data into callbacks */
+  curl_easy_setopt(handle, CURLOPT_CHUNK_DATA, &data);
+  curl_easy_setopt(handle, CURLOPT_WRITEDATA, &data);
+
+  /* curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L); */
+
+  /* set an URL containing wildcard pattern (only in the last part) */
+  if(argc == 2)
+    curl_easy_setopt(handle, CURLOPT_URL, argv[1]);
+  else
+    curl_easy_setopt(handle, CURLOPT_URL,
+      "ftp://curltest.howto.cz:123456@curltest.howto.cz/test/*");
+
+  /* and start transfer! */
+  rc = curl_easy_perform(handle);
+
+  curl_easy_cleanup(handle);
+  curl_global_cleanup();
+  return rc;
+}
+
+static long file_is_comming(struct curl_fileinfo *finfo,
+                            struct callback_data *data,
+                            int remains)
+{
+  printf("%3d %40s %10luB ", remains, finfo->filename,
+         (unsigned long)finfo->size);
+
+  switch(finfo->filetype) {
+  case CURLFILETYPE_DIRECTORY:
+    printf(" DIR\n");
+    break;
+  case CURLFILETYPE_FILE:
+    printf("FILE ");
+    break;
+  default:
+    printf("OTHER\n");
+    break;
+  }
+
+  if(finfo->filetype == CURLFILETYPE_FILE) {
+    /* do not transfer files >= 50B */
+    if(finfo->size > 50) {
+      printf("SKIPPED\n");
+      return CURL_CHUNK_BGN_FUNC_SKIP;
+    }
+
+    data->output = fopen(finfo->filename, "w");
+    if(!data->output) {
+      return CURL_CHUNK_BGN_FUNC_FAIL;
+    }
+  }
+
+  return CURL_CHUNK_BGN_FUNC_OK;
+}
+
+static long file_is_downloaded(struct callback_data *data)
+{
+  if(data->output) {
+    printf("DOWNLOADED\n");
+    fclose(data->output);
+    data->output = 0x0;
+  }
+  return CURL_CHUNK_END_FUNC_OK;
+}
+
+static size_t write_it(char *buff, size_t size, size_t nmemb,
+                       struct callback_data *data)
+{
+  size_t written = 0;
+  if(data->output)
+    written = fwrite(buff, size, nmemb, data->output);
+  else
+    /* listing output */
+    written = fwrite(buff, size, nmemb, stdout);
+  return written;
+}