"search json" action: Move the JSON callback method into an own action.

[collection4.git] / src / action_search_json.c

diff --git a/src/action_search_json.c b/src/action_search_json.c
new file mode 100644 (file)
index 0000000..0786a8f
--- /dev/null
+++ b/src/action_search_json.c
@@ -0,0 +1,154 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "action_search_json.h"
+#include "common.h"
+#include "graph.h"
+#include "graph_ident.h"
+#include "graph_list.h"
+#include "utils_cgi.h"
+
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
+
+#define RESULT_LIMIT 10
+
+struct callback_data_s
+{
+  graph_config_t *cfg;
+  int limit;
+  _Bool first;
+};
+typedef struct callback_data_s callback_data_t;
+
+static int json_begin_graph (graph_config_t *cfg) /* {{{ */
+{
+  char desc[1024];
+
+  if (cfg == NULL)
+    return (EINVAL);
+
+  graph_get_title (cfg, desc, sizeof (desc));
+
+  printf ("{\"title\":\"%s\",\"instances\":[", desc);
+
+  return (0);
+} /* }}} int json_begin_graph */
+
+static int json_end_graph (void) /* {{{ */
+{
+  printf ("]}");
+
+  return (0);
+} /* }}} int json_end_graph */
+
+static int json_print_instance (graph_config_t *cfg, /* {{{ */
+    graph_instance_t *inst)
+{
+  char params[1024];
+  char desc[1024];
+
+  if ((cfg == NULL) || (inst == NULL))
+    return (EINVAL);
+
+  memset (desc, 0, sizeof (desc));
+  inst_describe (cfg, inst, desc, sizeof (desc));
+
+  memset (params, 0, sizeof (params));
+  inst_get_params (cfg, inst, params, sizeof (params));
+
+  printf ("{\"description\":\"%s\",\"params\":\"%s\"}",
+      desc, params);
+
+  return (0);
+} /* }}} int json_print_instance */
+
+static int json_print_graph_instance (graph_config_t *cfg, /* {{{ */
+    graph_instance_t *inst,
+    void *user_data)
+{
+  callback_data_t *data = user_data;
+
+  if (data->cfg != cfg)
+  {
+    if (!data->first)
+    {
+      json_end_graph ();
+      printf (",\n");
+    }
+    json_begin_graph (cfg);
+
+    data->cfg = cfg;
+    data->first = 0;
+  }
+  else /* if (not first instance) */
+  {
+    printf (",\n");
+  }
+
+  json_print_instance (cfg, inst);
+
+  if (data->limit > 0)
+    data->limit--;
+
+  if (data->limit == 0)
+    return (1);
+
+  return (0);
+} /* }}} int json_print_graph_instance */
+
+static int list_graphs_json (const char *term) /* {{{ */
+{
+  callback_data_t data;
+
+  time_t now;
+  char time_buffer[128];
+  int status;
+
+  printf ("Content-Type: application/json\n");
+
+  now = time (NULL);
+  status = time_to_rfc1123 (now + 300, time_buffer, sizeof (time_buffer));
+  if (status == 0)
+    printf ("Expires: %s\n"
+        "Cache-Control: public\n",
+        time_buffer);
+  printf ("\n");
+
+  data.cfg = NULL;
+  data.limit = RESULT_LIMIT;
+  data.first = 1;
+
+  printf ("[\n");
+  if (term == NULL)
+    gl_instance_get_all (json_print_graph_instance, /* user_data = */ &data);
+  else
+    gl_search (term, json_print_graph_instance, /* user_data = */ &data);
+
+  if (!data.first)
+    json_end_graph ();
+
+  printf ("\n]");
+
+  return (0);
+} /* }}} int list_graphs_json */
+
+int action_search_json (void) /* {{{ */
+{
+  char *search;
+  int status;
+
+  gl_update ();
+
+  search = strtolower_copy (param ("q"));
+
+  status = list_graphs_json (search);
+
+  free (search);
+
+  return (status);
+} /* }}} int action_search_json */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */