Add /correct-editor command

src/command/cmd_ac.c

@@ -1795,6 +1795,7 @@ _cmd_ac_complete_params(ProfWin* window, const char* const input, gboolean previ
     g_hash_table_insert(ac_funcs, "/avatar", _avatar_autocomplete);
     g_hash_table_insert(ac_funcs, "/correction", _correction_autocomplete);
     g_hash_table_insert(ac_funcs, "/correct", _correct_autocomplete);
+    g_hash_table_insert(ac_funcs, "/correct-editor", _correct_autocomplete);
     g_hash_table_insert(ac_funcs, "/software", _software_autocomplete);
     g_hash_table_insert(ac_funcs, "/url", _url_autocomplete);
     g_hash_table_insert(ac_funcs, "/executable", _executable_autocomplete);
@@ -4054,7 +4055,22 @@ _correct_autocomplete(ProfWin* window, const char* const input, gboolean previou
         return NULL;
     }
 
-    GString* result_str = g_string_new("/correct ");
+    // Get command
+    int len = strlen(input);
+    char command[len + 2];
+    int i = 0;
+    while (i < len) {
+        if (input[i] == ' ') {
+            break;
+        } else {
+            command[i] = input[i];
+        }
+        i++;
+    }
+    command[i] = ' ';
+    command[i + 1] = '\0';
+
+    GString* result_str = g_string_new(command);
     g_string_append(result_str, last_message);
     char* result = result_str->str;
     g_string_free(result_str, FALSE);

src/command/cmd_defs.c

@@ -2622,6 +2622,25 @@ static struct cmd_t command_defs[] = {
       CMD_NOEXAMPLES
     },
 
+    { "/correct-editor",
+      parse_args_as_one, 1, 1, NULL,
+      CMD_NOSUBFUNCS
+      CMD_MAINFUNC(cmd_correct_editor)
+      CMD_TAGS(
+              CMD_TAG_CHAT,
+              CMD_TAG_GROUPCHAT)
+      CMD_SYN(
+              "/correct-editor <message>")
+      CMD_DESC(
+              "Spawn external editor to correct and resend the last message (XEP-0308). "
+              "Use tab completion to get the last sent message. "
+              "For more information on how to configure corrections, see: /help correction. "
+              "Use /executable to set your favourite editor.")
+      CMD_ARGS(
+              { "message", "The corrected message." })
+      CMD_NOEXAMPLES
+    },
+
     { "/silence",
       parse_args, 1, 1, &cons_silence_setting,
       CMD_NOSUBFUNCS

src/command/cmd_funcs.c

@@ -9527,6 +9527,122 @@ cmd_editor(ProfWin* window, const char* const command, gchar** args)
     return TRUE;
 }
 
+gboolean
+cmd_correct_editor(ProfWin* window, const char* const command, gchar** args)
+{
+    jabber_conn_status_t conn_status = connection_get_status();
+    if (conn_status != JABBER_CONNECTED) {
+        cons_show("You are currently not connected.");
+        return TRUE;
+    } else if (!prefs_get_boolean(PREF_CORRECTION_ALLOW)) {
+        win_println(window, THEME_DEFAULT, "!", "Corrections not enabled. See /help correction.");
+        return TRUE;
+    } else if (window->type == WIN_CHAT) {
+        ProfChatWin* chatwin = (ProfChatWin*)window;
+        assert(chatwin->memcheck == PROFCHATWIN_MEMCHECK);
+
+        if (chatwin->last_msg_id == NULL || chatwin->last_message == NULL) {
+            win_println(window, THEME_DEFAULT, "!", "No last message to correct.");
+            return TRUE;
+        }
+    } else if (window->type == WIN_MUC) {
+        ProfMucWin* mucwin = (ProfMucWin*)window;
+        assert(mucwin->memcheck == PROFMUCWIN_MEMCHECK);
+
+        if (mucwin->last_msg_id == NULL || mucwin->last_message == NULL) {
+            win_println(window, THEME_DEFAULT, "!", "No last message to correct.");
+            return TRUE;
+        }
+    } else {
+        win_println(window, THEME_DEFAULT, "!", "Command /correct-editor only valid in regular chat windows.");
+        return TRUE;
+    }
+
+    // create editor dir if not present
+    char *jid = connection_get_barejid();
+    gchar *path = files_get_account_data_path(DIR_EDITOR, jid);
+    if (g_mkdir_with_parents(path, S_IRWXU) != 0) {
+        cons_show_error("Failed to create directory at '%s' with error '%s'", path, strerror(errno));
+        free(jid);
+        g_free(path);
+        return TRUE;
+    }
+    // build temp file name. Example: /home/user/.local/share/profanity/editor/jid/compose.md
+    char* filename = g_strdup_printf("%s/compose.md", path);
+    free(jid);
+    g_free(path);
+
+    GError* creation_error = NULL;
+    GFile* file = g_file_new_for_path(filename);
+    GFileOutputStream* fos = g_file_create(file, G_FILE_CREATE_PRIVATE, NULL, &creation_error);
+    int fd_output_file = open(g_file_get_path(file), O_WRONLY);
+
+    const size_t COUNT = 8192;
+    gchar* message = g_strjoinv(" ", args);
+    write(fd_output_file, message, strlen(message));
+
+    free(message);
+    free(filename);
+
+    if (creation_error) {
+        cons_show_error("Editor: could not create temp file");
+        return TRUE;
+    }
+    g_object_unref(fos);
+
+    char* editor = prefs_get_string(PREF_COMPOSE_EDITOR);
+
+    // Fork / exec
+    pid_t pid = fork();
+    if (pid == 0) {
+        int x = execlp(editor, editor, g_file_get_path(file), (char*)NULL);
+        if (x == -1) {
+            cons_show_error("Editor:Failed to exec %s", editor);
+        }
+        _exit(EXIT_FAILURE);
+    } else {
+        if (pid == -1) {
+            return TRUE;
+        }
+        int status = 0;
+        waitpid(pid, &status, 0);
+        int fd_input_file = open(g_file_get_path(file), O_RDONLY);
+        char buf[COUNT];
+        ssize_t size_read = read(fd_input_file, buf, COUNT);
+        if (size_read > 0 && size_read <= COUNT) {
+            buf[size_read - 1] = '\0';
+            GString* text = g_string_new(buf);
+
+            if (window->type == WIN_CHAT) {
+                ProfChatWin* chatwin = (ProfChatWin*)window;
+                assert(chatwin->memcheck == PROFCHATWIN_MEMCHECK);
+
+                cl_ev_send_msg_correct(chatwin, text->str, FALSE, TRUE);
+            } else if (window->type == WIN_MUC) {
+                ProfMucWin* mucwin = (ProfMucWin*)window;
+                assert(mucwin->memcheck == PROFMUCWIN_MEMCHECK);
+
+                cl_ev_send_muc_msg_corrected(mucwin, text->str, FALSE, TRUE);
+            }
+
+            g_string_free(text, TRUE);
+        }
+        close(fd_input_file);
+
+        GError* deletion_error = NULL;
+        g_file_delete(file, NULL, &deletion_error);
+        if (deletion_error) {
+            cons_show("Editor: error during file deletion");
+            return TRUE;
+        }
+        g_object_unref(file);
+        ui_resize();
+        rl_point = rl_end;
+        rl_forced_update_display();
+    }
+    return TRUE;
+}
+
 gboolean
 cmd_silence(ProfWin* window, const char* const command, gchar** args)
 {

src/command/cmd_funcs.h

@@ -246,6 +246,7 @@ gboolean cmd_executable_urlsave(ProfWin* window, const char* const command, gcha
 gboolean cmd_executable_editor(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_mam(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_editor(ProfWin* window, const char* const command, gchar** args);
+gboolean cmd_correct_editor(ProfWin* window, const char* const command, gchar** args);
 gboolean cmd_silence(ProfWin* window, const char* const command, gchar** args);
 
 #endif