relay/api: add parameter "lines_free" in GET /api/buffers

This parameter is the number of lines to return for buffers with free content.

Its default value is `0` if "lines" is set to `0`, otherwise all buffer lines
are returned.

src/plugins/relay/api/relay-api-msg.c

@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
+#include <limits.h>
 #include <time.h>
 #include <sys/time.h>
 
@@ -355,6 +356,7 @@ relay_api_msg_buffer_add_local_vars_cb (void *data,
 cJSON *
 relay_api_msg_buffer_to_json (struct t_gui_buffer *buffer,
                               long lines,
+                              long lines_free,
                               int nicks,
                               enum t_relay_api_colors colors)
 {
@@ -379,6 +381,8 @@ relay_api_msg_buffer_to_json (struct t_gui_buffer *buffer,
     MSG_ADD_HDATA_STR("short_name", "short_name");
     MSG_ADD_HDATA_VAR(Number, "number", integer, "number");
     ptr_string = weechat_buffer_get_string (buffer, "type");
+    if (weechat_strcmp (ptr_string, "free") == 0)
+        lines = lines_free;
     MSG_ADD_STR_PTR("type", ptr_string);
     MSG_ADD_HDATA_STR_COLORS("title", "title");
     MSG_ADD_HDATA_VAR(Bool, "nicklist", integer, "nicklist");

src/plugins/relay/api/relay-api-msg.h

@@ -40,6 +40,7 @@ extern int relay_api_msg_send_event (struct t_relay_client *client,
                                      cJSON *json_body);
 extern cJSON *relay_api_msg_buffer_to_json (struct t_gui_buffer *buffer,
                                             long lines,
+                                            long lines_free,
                                             int nicks,
                                             enum t_relay_api_colors colors);
 extern cJSON *relay_api_msg_key_to_json (struct t_gui_key *key);

src/plugins/relay/api/relay-api-protocol.c

@@ -71,7 +71,7 @@ relay_api_protocol_signal_buffer_cb (const void *pointer, void *data,
     struct t_gui_line *ptr_line;
     struct t_gui_line_data *ptr_line_data;
     cJSON *json;
-    long lines;
+    long lines, lines_free;
     long long buffer_id;
     int nicks;
     const char *ptr_id;
@@ -142,18 +142,21 @@ relay_api_protocol_signal_buffer_cb (const void *pointer, void *data,
         /* we get all lines and nicks when a buffer is opened, otherwise none */
         if (strcmp (signal, "buffer_opened") == 0)
         {
-            lines = LONG_MIN;
+            lines = LONG_MAX;
+            lines_free = LONG_MAX;
             nicks = 1;
         }
         else
         {
             lines = 0;
+            lines_free = 0;
             nicks = 0;
         }
 
         /* build body with buffer info */
         json = relay_api_msg_buffer_to_json (
-            ptr_buffer, lines, nicks, RELAY_API_DATA(ptr_client, sync_colors));
+            ptr_buffer, lines, lines_free, nicks,
+            RELAY_API_DATA(ptr_client, sync_colors));
 
         /* send to client */
         if (json)
@@ -462,7 +465,7 @@ RELAY_API_PROTOCOL_CALLBACK(buffers)
 {
     cJSON *json;
     struct t_gui_buffer *ptr_buffer;
-    long lines;
+    long lines, lines_free;
     int nicks;
     enum t_relay_api_colors colors;
 
@@ -489,7 +492,7 @@ RELAY_API_PROTOCOL_CALLBACK(buffers)
         /* sub-resource of buffers */
         if (strcmp (client->http_req->path_items[3], "lines") == 0)
         {
-            lines = relay_http_get_param_long (client->http_req, "lines", -100L);
+            lines = relay_http_get_param_long (client->http_req, "lines", LONG_MAX);
             json = relay_api_msg_lines_to_json (ptr_buffer, lines, colors);
         }
         else if (strcmp (client->http_req->path_items[3], "nicks") == 0)
@@ -511,9 +514,13 @@ RELAY_API_PROTOCOL_CALLBACK(buffers)
     else
     {
         lines = relay_http_get_param_long (client->http_req, "lines", 0L);
+        lines_free = relay_http_get_param_long (client->http_req,
+                                                "lines_free",
+                                                (lines == 0) ? 0 : LONG_MAX);
         if (ptr_buffer)
         {
-            json = relay_api_msg_buffer_to_json (ptr_buffer, lines, nicks, colors);
+            json = relay_api_msg_buffer_to_json (ptr_buffer, lines, lines_free,
+                                                 nicks, colors);
         }
         else
         {
@@ -526,8 +533,8 @@ RELAY_API_PROTOCOL_CALLBACK(buffers)
             {
                 cJSON_AddItemToArray (
                     json,
-                    relay_api_msg_buffer_to_json (ptr_buffer,
-                                                  lines, nicks, colors));
+                    relay_api_msg_buffer_to_json (ptr_buffer, lines, lines_free,
+                                                  nicks, colors));
                 ptr_buffer = weechat_hdata_move (relay_hdata_buffer, ptr_buffer, 1);
             }
         }