core: add an option for multiline input in a buffer (closes #984)

This allows the input callback function for a buffer to receive multiple
lines at once, instead of the message being split on newline before
being sent to the callback. It adds a new flag, input_multiline, to
control this. This flag defaults to 0 which is the current behavior.

18 files changed, 77 insertions, 5 deletions

diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 1c21c16f0..21b1f0d42 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -20,6 +20,7 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 
 New features::
 
+  * core: add flag "input_multiline" in buffer (issue #984, issue #1063)
   * core: add a scalable WeeChat logo (SVG) (issue #1454, issue #1456)
   * core: add case sensitive wildcard matching comparison operator (`+==*+` and `+!!*+`) and case sensitive/insensitive include comparison operators (`+==-+`,  `+!!-+`, `+=-+`, `+!-+`) in evaluation of expressions
   * core: add default key kbd:[Alt+Shift+N] to toggle nicklist bar
diff --git a/doc/de/includes/autogen_api_hdata.de.adoc b/doc/de/includes/autogen_api_hdata.de.adoc
index dee44e0b0..56d6819f4 100644
--- a/doc/de/includes/autogen_api_hdata.de.adoc
+++ b/doc/de/includes/autogen_api_hdata.de.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/doc/en/includes/autogen_api_hdata.en.adoc b/doc/en/includes/autogen_api_hdata.en.adoc
index f99216f2e..dbfcd6ae6 100644
--- a/doc/en/includes/autogen_api_hdata.en.adoc
+++ b/doc/en/includes/autogen_api_hdata.en.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/doc/en/weechat_plugin_api.en.adoc b/doc/en/weechat_plugin_api.en.adoc
index ed4acb541..75dd458d3 100644
--- a/doc/en/weechat_plugin_api.en.adoc
+++ b/doc/en/weechat_plugin_api.en.adoc
@@ -12782,6 +12782,8 @@ Arguments:
 ** _input_get_unknown_commands_: 1 if unknown commands are sent to input
    callback, otherwise 0
 ** _input_get_empty_: 1 if empty input is sent to input callback, otherwise 0
+** _input_multiline_: 1 if multiple lines are sent as one message to input
+   callback, otherwise 0
 ** _input_size_: input size (in bytes)
 ** _input_length_: input length (number of chars)
 ** _input_pos_: cursor position in buffer input
@@ -13083,6 +13085,10 @@ Properties:
 | input_get_empty | "0" or "1" |
   "0" to disable empty input on this buffer (default behavior), "1" to get empty input.
 
+| input_multiline | "0" or "1" |
+  "0" to send each line separately to this buffer (default behavior), "1" to
+  send multiple lines as a single message.
+
 | localvar_set_xxx | any string |
   Set new value for local variable _xxx_ (variable is created if it does not
   exist).
diff --git a/doc/en/weechat_relay_protocol.en.adoc b/doc/en/weechat_relay_protocol.en.adoc
index d7b9a2e62..02523670a 100644
--- a/doc/en/weechat_relay_protocol.en.adoc
+++ b/doc/en/weechat_relay_protocol.en.adoc
@@ -673,6 +673,7 @@ inl:
         input: 1
         input_get_unknown_commands: 0
         input_get_empty: 0
+        input_multiline: 0
         input_buffer: ''
         input_buffer_alloc: 256
         input_buffer_size: 0
diff --git a/doc/fr/includes/autogen_api_hdata.fr.adoc b/doc/fr/includes/autogen_api_hdata.fr.adoc
index f6f51ab91..ebbc7f723 100644
--- a/doc/fr/includes/autogen_api_hdata.fr.adoc
+++ b/doc/fr/includes/autogen_api_hdata.fr.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/doc/fr/weechat_plugin_api.fr.adoc b/doc/fr/weechat_plugin_api.fr.adoc
index 6312c1f79..20cb2f0bb 100644
--- a/doc/fr/weechat_plugin_api.fr.adoc
+++ b/doc/fr/weechat_plugin_api.fr.adoc
@@ -13055,6 +13055,8 @@ Paramètres :
    à la fonction de rappel "input", sinon 0
 ** _input_get_empty_ : 1 si une entrée vide est envoyée à la fonction de rappel
    "input", sinon 0
+** _input_multiline_ : 1 si plusieurs lignes sont envoyées comme un seul message
+   à la fonction de rappel "input", sinon 0
 ** _input_size_ : taille de la zone de saisie (en octets)
 ** _input_length_ : longueur de la zone de saisie (nombre de caractères)
 ** _input_pos_ : position du curseur dans la zone de saisie
@@ -13370,6 +13372,10 @@ Propriétés :
   "0" pour désactiver l'entrée vide sur ce tampon (comportement par défaut),
   "1" pour recevoir l'entrée vide.
 
+| input_multiline | "0" ou "1" |
+  "0" pour envoyer chaque ligne séparément au tampon (comportement par défaut),
+  "1" pour envoyer plusieurs lignes comme un seul message.
+
 | localvar_set_xxx | toute chaîne |
   Change la valeur de la variable locale _xxx_ (la variable est créée si elle
   n'existe pas).
diff --git a/doc/fr/weechat_relay_protocol.fr.adoc b/doc/fr/weechat_relay_protocol.fr.adoc
index b5fb12fc8..e21a08ce4 100644
--- a/doc/fr/weechat_relay_protocol.fr.adoc
+++ b/doc/fr/weechat_relay_protocol.fr.adoc
@@ -686,6 +686,7 @@ inl:
         input: 1
         input_get_unknown_commands: 0
         input_get_empty: 0
+        input_multiline: 0
         input_buffer: ''
         input_buffer_alloc: 256
         input_buffer_size: 0
diff --git a/doc/it/includes/autogen_api_hdata.it.adoc b/doc/it/includes/autogen_api_hdata.it.adoc
index e02a7f147..ac0d63b11 100644
--- a/doc/it/includes/autogen_api_hdata.it.adoc
+++ b/doc/it/includes/autogen_api_hdata.it.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/doc/it/weechat_plugin_api.it.adoc b/doc/it/weechat_plugin_api.it.adoc
index 74fd1f77a..2e68892e0 100644
--- a/doc/it/weechat_plugin_api.it.adoc
+++ b/doc/it/weechat_plugin_api.it.adoc
@@ -13305,6 +13305,9 @@ Argomenti:
    alla callback di input, altrimenti 0
 // TRANSLATION MISSING
 ** _input_get_empty_: 1 if empty input is sent to input callback, otherwise 0
+// TRANSLATION MISSING
+** _input_multiline_: 1 if multiple lines are sent as one message to input
+   callback, otherwise 0
 ** _input_size_: dimensione per l'input (in byte)
 ** _input_length_: lunghezza dell'input (numero di caratteri)
 ** _input_pos_: posizione del cursore nell'input del buffer
@@ -13634,6 +13637,11 @@ Properties:
 | input_get_empty | "0" oppure "1" |
   "0" to disable empty input on this buffer (default behavior), "1" to get empty input.
 
+// TRANSLATION MISSING
+| input_multiline | "0" or "1" |
+  "0" to send each line separately to this buffer (default behavior), "1" to
+  send multiple lines as a single message.
+
 | localvar_set_xxx | qualsiasi stringa |
   Imposta il nuovo valore per la variabile locale _xxx_ (la variabile verrà
   creata se non esiste).
diff --git a/doc/ja/includes/autogen_api_hdata.ja.adoc b/doc/ja/includes/autogen_api_hdata.ja.adoc
index d5ff3f3b7..e1c0d5d52 100644
--- a/doc/ja/includes/autogen_api_hdata.ja.adoc
+++ b/doc/ja/includes/autogen_api_hdata.ja.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/doc/ja/weechat_plugin_api.ja.adoc b/doc/ja/weechat_plugin_api.ja.adoc
index da0827f93..17279d34d 100644
--- a/doc/ja/weechat_plugin_api.ja.adoc
+++ b/doc/ja/weechat_plugin_api.ja.adoc
@@ -12777,6 +12777,9 @@ int weechat_buffer_get_integer (struct t_gui_buffer *buffer,
 ** _input_get_unknown_commands_: 未定義のコマンドを入力コールバックに送信する場合は
    1、そうでない場合は 0
 ** _input_get_empty_: 入力コールバックに何も送信されなかった場合は 1、そうでない場合は 0
+// TRANSLATION MISSING
+** _input_multiline_: 1 if multiple lines are sent as one message to input
+   callback, otherwise 0
 ** _input_size_: 入力サイズ (バイト単位)
 ** _input_length_: 入力長 (文字数)
 ** _input_pos_: バッファ入力におけるカーソル位置
@@ -13076,6 +13079,11 @@ void weechat_buffer_set (struct t_gui_buffer *buffer, const char *property,
 | input_get_empty | "0" または "1" |
   バッファに対する空入力を受け取らない場合は "0" (デフォルト)、空入力を受け取る場合は "1"
 
+// TRANSLATION MISSING
+| input_multiline | "0" または "1" |
+  "0" to send each line separately to this buffer (default behavior), "1" to
+  send multiple lines as a single message.
+
 | localvar_set_xxx | 任意の文字列 |
   ローカル変数 _xxx_ の新しい値を設定
   (存在しない変数の場合は変数を作成する)
diff --git a/doc/ja/weechat_relay_protocol.ja.adoc b/doc/ja/weechat_relay_protocol.ja.adoc
index 00eafe704..43ef710a8 100644
--- a/doc/ja/weechat_relay_protocol.ja.adoc
+++ b/doc/ja/weechat_relay_protocol.ja.adoc
@@ -691,6 +691,7 @@ inl:
         input: 1
         input_get_unknown_commands: 0
         input_get_empty: 0
+        input_multiline: 0
         input_buffer: ''
         input_buffer_alloc: 256
         input_buffer_size: 0
diff --git a/doc/pl/includes/autogen_api_hdata.pl.adoc b/doc/pl/includes/autogen_api_hdata.pl.adoc
index 4cf43e5cd..34ac73db5 100644
--- a/doc/pl/includes/autogen_api_hdata.pl.adoc
+++ b/doc/pl/includes/autogen_api_hdata.pl.adoc
@@ -589,6 +589,7 @@ _input_callback_pointer_   (pointer) +
 _input_callback_data_   (pointer) +
 _input_get_unknown_commands_   (integer) +
 _input_get_empty_   (integer) +
+_input_multiline_   (integer) +
 _input_buffer_   (string) +
 _input_buffer_alloc_   (integer) +
 _input_buffer_size_   (integer) +
diff --git a/src/core/wee-input.c b/src/core/wee-input.c
index 1ac2c82ed..3a8cd0113 100644
--- a/src/core/wee-input.c
+++ b/src/core/wee-input.c
@@ -298,7 +298,8 @@ input_data (struct t_gui_buffer *buffer, const char *data,
                 break;
         }
 
-        pos = strchr (ptr_data, '\n');
+        pos = (buffer->input_multiline) ? NULL : strchr (ptr_data, '\n');
+
         if (pos)
             pos[0] = '\0';
 
diff --git a/src/core/wee-upgrade.c b/src/core/wee-upgrade.c
index 4f3234e4a..e4226233f 100644
--- a/src/core/wee-upgrade.c
+++ b/src/core/wee-upgrade.c
@@ -517,6 +517,8 @@ upgrade_weechat_read_buffer (struct t_infolist *infolist)
         infolist_integer (infolist, "input_get_unknown_commands");
     ptr_buffer->input_get_empty =
         infolist_integer (infolist, "input_get_empty");
+    ptr_buffer->input_multiline =
+        infolist_integer (infolist, "input_multiline");
 
     if (infolist_integer (infolist, "input_buffer_alloc") > 0)
     {
diff --git a/src/gui/gui-buffer.c b/src/gui/gui-buffer.c
index 00d254cf3..41a6791e0 100644
--- a/src/gui/gui-buffer.c
+++ b/src/gui/gui-buffer.c
@@ -93,9 +93,10 @@ char *gui_buffer_properties_get_integer[] =
   "nicklist_case_sensitive", "nicklist_max_length", "nicklist_display_groups",
   "nicklist_count", "nicklist_groups_count", "nicklist_nicks_count",
   "nicklist_visible_count", "input", "input_get_unknown_commands",
-  "input_get_empty", "input_size", "input_length", "input_pos",
-  "input_1st_display", "num_history", "text_search", "text_search_exact",
-  "text_search_regex", "text_search_where", "text_search_found",
+  "input_get_empty", "input_multiline", "input_size", "input_length",
+  "input_pos", "input_1st_display", "num_history", "text_search",
+  "text_search_exact", "text_search_regex", "text_search_where",
+  "text_search_found",
   NULL
 };
 char *gui_buffer_properties_get_string[] =
@@ -116,7 +117,7 @@ char *gui_buffer_properties_set[] =
   "highlight_words_del", "highlight_regex", "highlight_tags_restrict",
   "highlight_tags", "hotlist_max_level_nicks", "hotlist_max_level_nicks_add",
   "hotlist_max_level_nicks_del", "input", "input_pos",
-  "input_get_unknown_commands", "input_get_empty",
+  "input_get_unknown_commands", "input_get_empty", "input_multiline",
   NULL
 };
 
@@ -742,6 +743,7 @@ gui_buffer_new (struct t_weechat_plugin *plugin,
     new_buffer->input_callback_data = input_callback_data;
     new_buffer->input_get_unknown_commands = 0;
     new_buffer->input_get_empty = 0;
+    new_buffer->input_multiline = 0;
     gui_buffer_input_buffer_init (new_buffer);
 
     /* undo for input */
@@ -1174,6 +1176,8 @@ gui_buffer_get_integer (struct t_gui_buffer *buffer, const char *property)
         return buffer->input_get_unknown_commands;
     else if (string_strcasecmp (property, "input_get_empty") == 0)
         return buffer->input_get_empty;
+    else if (string_strcasecmp (property, "input_multiline") == 0)
+        return buffer->input_multiline;
     else if (string_strcasecmp (property, "input_size") == 0)
         return buffer->input_buffer_size;
     else if (string_strcasecmp (property, "input_length") == 0)
@@ -1906,6 +1910,20 @@ gui_buffer_set_input_get_empty (struct t_gui_buffer *buffer,
 }
 
 /*
+ * Sets flag "input_multiline" for a buffer.
+ */
+
+void
+gui_buffer_set_input_multiline (struct t_gui_buffer *buffer,
+                                int input_multiline)
+{
+    if (!buffer)
+        return;
+
+    buffer->input_multiline = (input_multiline) ? 1 : 0;
+}
+
+/*
  * Sets unread marker for a buffer.
  */
 
@@ -2192,6 +2210,13 @@ gui_buffer_set (struct t_gui_buffer *buffer, const char *property,
         if (error && !error[0])
             gui_buffer_set_input_get_empty (buffer, number);
     }
+    else if (string_strcasecmp (property, "input_multiline") == 0)
+    {
+        error = NULL;
+        number = strtol (value, &error, 10);
+        if (error && !error[0])
+            gui_buffer_set_input_multiline (buffer, number);
+    }
     else if (string_strncasecmp (property, "localvar_set_", 13) == 0)
     {
         if (value)
@@ -4284,6 +4309,7 @@ gui_buffer_hdata_buffer_cb (const void *pointer, void *data,
         HDATA_VAR(struct t_gui_buffer, input_callback_data, POINTER, 0, NULL, NULL);
         HDATA_VAR(struct t_gui_buffer, input_get_unknown_commands, INTEGER, 0, NULL, NULL);
         HDATA_VAR(struct t_gui_buffer, input_get_empty, INTEGER, 0, NULL, NULL);
+        HDATA_VAR(struct t_gui_buffer, input_multiline, INTEGER, 0, NULL, NULL);
         HDATA_VAR(struct t_gui_buffer, input_buffer, STRING, 0, NULL, NULL);
         HDATA_VAR(struct t_gui_buffer, input_buffer_alloc, INTEGER, 0, NULL, NULL);
         HDATA_VAR(struct t_gui_buffer, input_buffer_size, INTEGER, 0, NULL, NULL);
@@ -4484,6 +4510,8 @@ gui_buffer_add_to_infolist (struct t_infolist *infolist,
         return 0;
     if (!infolist_new_var_integer (ptr_item, "input_get_empty", buffer->input_get_empty))
         return 0;
+    if (!infolist_new_var_integer (ptr_item, "input_multiline", buffer->input_multiline))
+        return 0;
     if (!infolist_new_var_string (ptr_item, "input_buffer", buffer->input_buffer))
         return 0;
     if (!infolist_new_var_integer (ptr_item, "input_buffer_alloc", buffer->input_buffer_alloc))
@@ -4699,6 +4727,7 @@ gui_buffer_print_log ()
         log_printf ("  input_callback_data . . : 0x%lx", ptr_buffer->input_callback_data);
         log_printf ("  input_get_unknown_cmd . : %d",    ptr_buffer->input_get_unknown_commands);
         log_printf ("  input_get_empty . . . . : %d",    ptr_buffer->input_get_empty);
+        log_printf ("  input_multiline . . . . : %d",    ptr_buffer->input_multiline);
         log_printf ("  input_buffer. . . . . . : '%s'",  ptr_buffer->input_buffer);
         log_printf ("  input_buffer_alloc. . . : %d",    ptr_buffer->input_buffer_alloc);
         log_printf ("  input_buffer_size . . . : %d",    ptr_buffer->input_buffer_size);
diff --git a/src/gui/gui-buffer.h b/src/gui/gui-buffer.h
index fb2ac43b6..bc7dfec7f 100644
--- a/src/gui/gui-buffer.h
+++ b/src/gui/gui-buffer.h
@@ -157,6 +157,8 @@ struct t_gui_buffer
                                        /* input_callback                    */
     int input_get_empty;               /* 1 if empty input is sent to       */
                                        /* input_callback                    */
+    int input_multiline;               /* 1 if multiple lines are sent as   */
+                                       /* one message to input_callback     */
     char *input_buffer;                /* input buffer                      */
     int input_buffer_alloc;            /* input buffer: allocated size      */
     int input_buffer_size;             /* buffer size in bytes              */