guile: new script plugin for scheme (task #7289)

src/plugins/scripts/CMakeLists.txt

@@ -58,3 +58,10 @@ IF(ENABLE_TCL)
     ADD_SUBDIRECTORY( tcl )
   ENDIF(TCL_FOUND)
 ENDIF(ENABLE_TCL)
+
+IF(ENABLE_GUILE)
+  FIND_PACKAGE(Guile)
+  IF(GUILE_FOUND)
+    ADD_SUBDIRECTORY( guile )
+  ENDIF(GUILE_FOUND)
+ENDIF(ENABLE_GUILE)

src/plugins/scripts/Makefile.am

@@ -48,6 +48,10 @@ if PLUGIN_TCL
 tcl_dir = tcl
 endif
 
-SUBDIRS = . $(perl_dir) $(python_dir) $(ruby_dir) $(lua_dir) $(tcl_dir)
+if PLUGIN_GUILE
+guile_dir = guile
+endif
+
+SUBDIRS = . $(perl_dir) $(python_dir) $(ruby_dir) $(lua_dir) $(tcl_dir) $(guile_dir)
 
 EXTRA_DIST = CMakeLists.txt

src/plugins/scripts/guile/CMakeLists.txt

@@ -0,0 +1,31 @@
+#
+# Copyright (C) 2011 Sebastien Helleu <flashcode@flashtux.org>
+#
+# This file is part of WeeChat, the extensible chat client.
+#
+# WeeChat is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# WeeChat is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+ADD_LIBRARY(guile MODULE weechat-guile.c weechat-guile.h
+weechat-guile-api.c weechat-guile-api.h)
+
+SET_TARGET_PROPERTIES(guile PROPERTIES PREFIX "")
+
+IF(GUILE_FOUND)
+  INCLUDE_DIRECTORIES(${GUILE_INCLUDE_PATH})
+  SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${GUILE_LFLAGS}")
+  TARGET_LINK_LIBRARIES(guile ${GUILE_LIBRARY} weechat_scripts)
+ENDIF(GUILE_FOUND)
+
+INSTALL(TARGETS guile LIBRARY DESTINATION ${LIBDIR}/plugins)

src/plugins/scripts/guile/Makefile.am

@@ -0,0 +1,33 @@
+#
+# Copyright (C) 2011 Sebastien Helleu <flashcode@flashtux.org>
+#
+# This file is part of WeeChat, the extensible chat client.
+#
+# WeeChat is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# WeeChat is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+INCLUDES = -DLOCALEDIR=\"$(datadir)/locale\" $(GUILE_CFLAGS)
+
+libdir = ${weechat_libdir}/plugins
+
+lib_LTLIBRARIES = guile.la
+
+guile_la_SOURCES = weechat-guile.c \
+                   weechat-guile.h \
+                   weechat-guile-api.c \
+                   weechat-guile-api.h
+guile_la_LDFLAGS = -module
+guile_la_LIBADD  = ../lib_weechat_plugins_scripts.la $(GUILE_LFLAGS)
+
+EXTRA_DIST = CMakeLists.txt

src/plugins/scripts/guile/weechat-guile-api.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2011 Sebastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __WEECHAT_GUILE_API_H
+#define __WEECHAT_GUILE_API_H 1
+
+extern int weechat_guile_api_buffer_input_data_cb (void *data,
+                                                   struct t_gui_buffer *buffer,
+                                                   const char *input_data);
+extern int weechat_guile_api_buffer_close_cb (void *data,
+                                              struct t_gui_buffer *buffer);
+extern void weechat_guile_api_module_init (void *data);
+
+#endif /* __WEECHAT_GUILE_API_H */

src/plugins/scripts/guile/weechat-guile.c

@@ -0,0 +1,891 @@
+/*
+ * Copyright (C) 2011 Sebastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * weechat-guile.c: guile (scheme) plugin for WeeChat
+ */
+
+#undef _
+
+#include <libguile.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <libgen.h>
+
+#include "../../weechat-plugin.h"
+#include "../script.h"
+#include "weechat-guile.h"
+#include "weechat-guile-api.h"
+
+
+WEECHAT_PLUGIN_NAME(GUILE_PLUGIN_NAME);
+WEECHAT_PLUGIN_DESCRIPTION("Guile (scheme) plugin for WeeChat");
+WEECHAT_PLUGIN_AUTHOR("Sebastien Helleu <flashcode@flashtux.org>");
+WEECHAT_PLUGIN_VERSION(WEECHAT_VERSION);
+WEECHAT_PLUGIN_LICENSE(WEECHAT_LICENSE);
+
+struct t_weechat_plugin *weechat_guile_plugin = NULL;
+
+int guile_quiet;
+struct t_plugin_script *guile_scripts = NULL;
+struct t_plugin_script *last_guile_script = NULL;
+struct t_plugin_script *guile_current_script = NULL;
+struct t_plugin_script *guile_registered_script = NULL;
+const char *guile_current_script_filename = NULL;
+SCM guile_module_weechat;
+SCM guile_port;
+char *guile_stdout = NULL;
+
+struct t_guile_function
+{
+    SCM proc;
+    SCM args;
+};
+
+/*
+ * string used to execute action "install":
+ * when signal "guile_install_script" is received, name of string
+ * is added to this string, to be installed later by a timer (when nothing is
+ * running in script)
+ */
+char *guile_action_install_list = NULL;
+
+/*
+ * string used to execute action "remove":
+ * when signal "guile_remove_script" is received, name of string
+ * is added to this string, to be removed later by a timer (when nothing is
+ * running in script)
+ */
+char *guile_action_remove_list = NULL;
+
+
+/*
+ * weechat_guile_stdout_flush: flush stdout
+ */
+
+void
+weechat_guile_stdout_flush ()
+{
+    if (guile_stdout)
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s: stdout/stderr: %s%s"),
+                        GUILE_PLUGIN_NAME, guile_stdout, "");
+        free (guile_stdout);
+        guile_stdout = NULL;
+    }
+}
+
+/*
+ * weechat_guile_catch: execute scheme procedure with internal catch
+ *                      and return value
+ */
+
+SCM
+weechat_guile_catch (void *procedure, void *data)
+{
+    SCM value;
+    
+    value = scm_internal_catch (SCM_BOOL_T,
+                                (scm_t_catch_body)procedure,
+                                data,
+                                (scm_t_catch_handler) scm_handle_by_message_noexit,
+                                NULL);
+    return value;
+}
+
+/*
+ * weechat_guile_scm_call_1: encapsulate call to scm_call_1 (to give arguments)
+ */
+
+SCM
+weechat_guile_scm_call_1 (void *proc)
+{
+    struct t_guile_function *guile_function;
+    
+    guile_function = (struct t_guile_function *)proc;
+    
+    return scm_call_1 (guile_function->proc, guile_function->args);
+}
+
+/*
+ * weechat_guile_exec_function: execute scheme function (with optional args)
+ *                              and return value
+ */
+
+SCM
+weechat_guile_exec_function (const char *function, SCM args)
+{
+    SCM func, func2, value;
+    struct t_guile_function guile_function;
+    
+    func = weechat_guile_catch (scm_c_lookup, (void *)function);
+    func2 = weechat_guile_catch (scm_variable_ref, func);
+
+    if (args)
+    {
+        guile_function.proc = func2;
+        guile_function.args = args;
+        value = weechat_guile_catch (weechat_guile_scm_call_1, &guile_function);
+    }
+    else
+    {
+        value = weechat_guile_catch (scm_call_0, func2);
+    }    
+    
+    return value;
+}
+
+/*
+ * weechat_guile_hashtable_map_cb: callback called for each key/value in a
+ *                                 hashtable
+ */
+
+void
+weechat_guile_hashtable_map_cb (void *data,
+                                struct t_hashtable *hashtable,
+                                const void *key,
+                                const void *value)
+{
+    SCM *alist, pair, list;
+    
+    /* make C compiler happy */
+    (void) hashtable;
+    
+    alist = (SCM *)data;
+    
+    pair = scm_cons (scm_from_locale_string ((const char *)key),
+                     scm_from_locale_string ((const char *)value));
+    list = scm_list_1 (pair);
+    
+    *alist = scm_append (scm_list_2 (*alist, list));
+}
+
+/*
+ * weechat_guile_hashtable_to_alist: get Guile alist with a WeeChat hashtable
+ */
+
+SCM
+weechat_guile_hashtable_to_alist (struct t_hashtable *hashtable)
+{
+    SCM alist;
+    
+    alist = scm_list_n (SCM_UNDEFINED);
+    
+    weechat_hashtable_map (hashtable,
+                           &weechat_guile_hashtable_map_cb,
+                           &alist);
+    
+    return alist;
+}
+
+/*
+ * weechat_guile_alist_to_hashtable: get WeeChat hashtable with Guile alist
+ *                                   Hashtable returned has type string for
+ *                                   both keys and values
+ *                                   Note: hashtable has to be released after
+ *                                   use with call to weechat_hashtable_free()
+ */
+
+struct t_hashtable *
+weechat_guile_alist_to_hashtable (SCM alist, int hashtable_size)
+{
+    struct t_hashtable *hashtable;
+    int length, i;
+    SCM pair;
+    
+    hashtable = weechat_hashtable_new (hashtable_size,
+                                       WEECHAT_HASHTABLE_STRING,
+                                       WEECHAT_HASHTABLE_STRING,
+                                       NULL,
+                                       NULL);
+    if (!hashtable)
+        return NULL;
+    
+    length = scm_to_int (scm_length (alist));
+    for (i = 0; i < length; i++)
+    {
+        pair = scm_list_ref (alist, scm_from_int (i));
+        weechat_hashtable_set (hashtable,
+                               scm_i_string_chars (scm_list_ref (pair,
+                                                                 scm_from_int (0))),
+                               scm_i_string_chars (scm_list_ref (pair,
+                                                                 scm_from_int (1))));
+    }
+    
+    return hashtable;
+}
+
+/*
+ * weechat_guile_exec: execute a Guile function
+ */
+
+void *
+weechat_guile_exec (struct t_plugin_script *script,
+                    int ret_type, const char *function,
+                    char *format, void **argv)
+{
+    struct t_plugin_script *old_guile_current_script;
+    SCM argv_list, rc;
+    void *argv2[17], *ret_value;
+    int i, argc, *ret_int;
+    
+    old_guile_current_script = guile_current_script;
+    scm_set_current_module ((SCM)(script->interpreter));
+    guile_current_script = script;
+    
+    if (argv && argv[0])
+    {
+        argc = strlen (format);
+        for (i = 0; i < argc; i++)
+        {
+            switch (format[i])
+            {
+                case 's': /* string */
+                    argv2[i] = scm_from_locale_string ((char *)argv[i]);
+                    break;
+                case 'i': /* integer */
+                    argv2[i] = scm_from_int (*((int *)argv[i]));
+                    break;
+                case 'h': /* hash */
+                    argv2[i] = weechat_guile_hashtable_to_alist (argv[i]);
+                    break;
+            }
+        }
+        for (i = argc; i < 17; i++)
+        {
+            argv2[i] = SCM_UNDEFINED;
+        }
+        argv_list = scm_list_n (argv2[0], argv2[1],
+                                argv2[2], argv2[3],
+                                argv2[4], argv2[5],
+                                argv2[6], argv2[7],
+                                argv2[8], argv2[9],
+                                argv2[10], argv2[11],
+                                argv2[12], argv2[13],
+                                argv2[14], argv2[15],
+                                argv2[16]);
+        rc = weechat_guile_exec_function (function, argv_list);
+    }
+    else
+    {
+        rc = weechat_guile_exec_function (function, NULL);
+    }
+    
+    ret_value = NULL;
+    
+    if ((ret_type == WEECHAT_SCRIPT_EXEC_STRING) && (scm_is_string (rc)))
+    {
+        ret_value = scm_to_locale_string (rc);
+    }
+    else if ((ret_type == WEECHAT_SCRIPT_EXEC_INT) && (scm_is_integer (rc)))
+    {
+        ret_int = malloc (sizeof (*ret_int));
+        if (ret_int)
+            *ret_int = scm_to_int (rc);
+        ret_value = ret_int;
+    }
+    else if (ret_type == WEECHAT_SCRIPT_EXEC_HASHTABLE)
+    {
+        ret_value = weechat_guile_alist_to_hashtable (rc,
+                                                      WEECHAT_SCRIPT_HASHTABLE_DEFAULT_SIZE);
+    }
+    else
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s%s: function \"%s\" must return "
+                                         "a valid value"),
+                        weechat_prefix ("error"), GUILE_PLUGIN_NAME, function);
+    }
+    
+    if (ret_value == NULL)
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s%s: error in function \"%s\""),
+                        weechat_prefix ("error"), GUILE_PLUGIN_NAME, function);
+    }
+    
+    if (old_guile_current_script)
+        scm_set_current_module ((SCM)(old_guile_current_script->interpreter));
+    
+    guile_current_script = old_guile_current_script;
+    
+    return ret_value;
+}
+
+/*
+ * weechat_guile_module_init_script: init Guile module for script
+ */
+
+void
+weechat_guile_module_init_script (void *data)
+{
+    weechat_guile_catch (scm_c_eval_string, "(use-modules (weechat))");
+    weechat_guile_catch (scm_c_primitive_load, data);
+}
+
+/*
+ * weechat_guile_load: load a Guile script
+ */
+
+int
+weechat_guile_load (const char *filename)
+{
+    char *filename2, *ptr_base_name, *base_name;
+    SCM module;
+    
+    if ((weechat_guile_plugin->debug >= 1) || !guile_quiet)
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s: loading script \"%s\""),
+                        GUILE_PLUGIN_NAME, filename);
+    }
+    
+    guile_current_script = NULL;
+    guile_registered_script = NULL;
+    guile_current_script_filename = filename;
+    
+    filename2 = strdup (filename);
+    if (!filename2)
+        return 0;
+    
+    ptr_base_name = basename (filename2);
+    base_name = strdup (ptr_base_name);
+    module = scm_c_define_module (base_name,
+                                  &weechat_guile_module_init_script, filename2);
+    free (filename2);
+    
+    if (!guile_registered_script)
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s%s: function \"register\" not "
+                                         "found (or failed) in file \"%s\""),
+                        weechat_prefix ("error"), GUILE_PLUGIN_NAME, filename);
+        return 0;
+    }
+    
+    scm_gc_protect_object (module);
+    
+    guile_current_script = guile_registered_script;
+    guile_current_script->interpreter = (void *)module;
+    
+    /*
+     * set input/close callbacks for buffers created by this script
+     * (to restore callbacks after upgrade)
+     */
+    script_set_buffer_callbacks (weechat_guile_plugin,
+                                 guile_scripts,
+                                 guile_current_script,
+                                 &weechat_guile_api_buffer_input_data_cb,
+                                 &weechat_guile_api_buffer_close_cb);
+    
+    return 1;
+}
+
+/*
+ * weechat_guile_load_cb: callback for script_auto_load() function
+ */
+
+void
+weechat_guile_load_cb (void *data, const char *filename)
+{
+    /* make C compiler happy */
+    (void) data;
+    
+    weechat_guile_load (filename);
+}
+
+/*
+ * weechat_guile_unload: unload a Guile script
+ */
+
+void
+weechat_guile_unload (struct t_plugin_script *script)
+{
+    int *rc;
+    
+    if ((weechat_guile_plugin->debug >= 1) || !guile_quiet)
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s: unloading script \"%s\""),
+                        GUILE_PLUGIN_NAME, script->name);
+    }
+    
+    if (script->shutdown_func && script->shutdown_func[0])
+    {
+        rc = (int *)weechat_guile_exec (script, WEECHAT_SCRIPT_EXEC_INT,
+                                        script->shutdown_func, NULL, NULL);
+        if (rc)
+            free (rc);
+    }
+    
+    scm_gc_unprotect_object (script->interpreter);
+    
+    if (guile_current_script == script)
+        guile_current_script = (guile_current_script->prev_script) ?
+            guile_current_script->prev_script : guile_current_script->next_script;
+    
+    script_remove (weechat_guile_plugin, &guile_scripts, &last_guile_script,
+                   script);
+}
+
+/*
+ * weechat_guile_unload_name: unload a Guile script by name
+ */
+
+void
+weechat_guile_unload_name (const char *name)
+{
+    struct t_plugin_script *ptr_script;
+    
+    ptr_script = script_search (weechat_guile_plugin, guile_scripts, name);
+    if (ptr_script)
+    {
+        weechat_guile_unload (ptr_script);
+        weechat_printf (NULL,
+                        weechat_gettext ("%s: script \"%s\" unloaded"),
+                        GUILE_PLUGIN_NAME, name);
+    }
+    else
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s%s: script \"%s\" not loaded"),
+                        weechat_prefix ("error"), GUILE_PLUGIN_NAME, name);
+    }
+}
+
+/*
+ * weechat_guile_unload_all: unload all Guile scripts
+ */
+
+void
+weechat_guile_unload_all ()
+{
+    while (guile_scripts)
+    {
+        weechat_guile_unload (guile_scripts);
+    }
+}
+
+/*
+ * weechat_guile_reload_name: reload a Guile script by name
+ */
+
+void
+weechat_guile_reload_name (const char *name)
+{
+    struct t_plugin_script *ptr_script;
+    char *filename;
+    
+    ptr_script = script_search (weechat_guile_plugin, guile_scripts, name);
+    if (ptr_script)
+    {
+        filename = strdup (ptr_script->filename);
+        if (filename)
+        {
+            weechat_guile_unload (ptr_script);
+            weechat_printf (NULL,
+                            weechat_gettext ("%s: script \"%s\" unloaded"),
+                            GUILE_PLUGIN_NAME, name);
+            weechat_guile_load (filename);
+            free (filename);
+        }
+    }
+    else
+    {
+        weechat_printf (NULL,
+                        weechat_gettext ("%s%s: script \"%s\" not loaded"),
+                        weechat_prefix ("error"), GUILE_PLUGIN_NAME, name);
+    }
+}
+
+/*
+ * weechat_guile_cmd: callback for "/guile" command
+ */
+
+int
+weechat_guile_command_cb (void *data, struct t_gui_buffer *buffer,
+                          int argc, char **argv, char **argv_eol)
+{
+    char *path_script;
+    SCM value;
+    
+    /* make C compiler happy */
+    (void) data;
+    (void) buffer;
+
+    if (argc == 1)
+    {
+        script_display_list (weechat_guile_plugin, guile_scripts,
+                             NULL, 0);
+    }
+    else if (argc == 2)
+    {
+        if (weechat_strcasecmp (argv[1], "list") == 0)
+        {
+            script_display_list (weechat_guile_plugin, guile_scripts,
+                                 NULL, 0);
+        }
+        else if (weechat_strcasecmp (argv[1], "listfull") == 0)
+        {
+            script_display_list (weechat_guile_plugin, guile_scripts,
+                                 NULL, 1);
+        }
+        else if (weechat_strcasecmp (argv[1], "autoload") == 0)
+        {
+            script_auto_load (weechat_guile_plugin, &weechat_guile_load_cb);
+        }
+        else if (weechat_strcasecmp (argv[1], "reload") == 0)
+        {
+            weechat_guile_unload_all ();
+            script_auto_load (weechat_guile_plugin, &weechat_guile_load_cb);
+        }
+        else if (weechat_strcasecmp (argv[1], "unload") == 0)
+        {
+            weechat_guile_unload_all ();
+        }
+    }
+    else
+    {
+        if (weechat_strcasecmp (argv[1], "list") == 0)
+        {
+            script_display_list (weechat_guile_plugin, guile_scripts,
+                                 argv_eol[2], 0);
+        }
+        else if (weechat_strcasecmp (argv[1], "listfull") == 0)
+        {
+            script_display_list (weechat_guile_plugin, guile_scripts,
+                                 argv_eol[2], 1);
+        }
+        else if (weechat_strcasecmp (argv[1], "load") == 0)
+        {
+            /* load Guile script */
+            path_script = script_search_path (weechat_guile_plugin,
+                                              argv_eol[2]);
+            weechat_guile_load ((path_script) ? path_script : argv_eol[2]);
+            if (path_script)
+                free (path_script);
+        }
+        else if (weechat_strcasecmp (argv[1], "reload") == 0)
+        {
+            /* reload one Guile script */
+            weechat_guile_reload_name (argv_eol[2]);
+        }
+        else if (weechat_strcasecmp (argv[1], "unload") == 0)
+        {
+            /* unload Guile script */
+            weechat_guile_unload_name (argv_eol[2]);
+        }
+        else if (weechat_strcasecmp (argv[1], "eval") == 0)
+        {
+            /* eval Guile code */
+            value = weechat_guile_catch (scm_c_eval_string, argv_eol[2]);
+            if (!SCM_EQ_P (value, SCM_UNDEFINED)
+                && !SCM_EQ_P (value, SCM_UNSPECIFIED))
+            {
+                scm_display (value, guile_port);
+            }
+            weechat_guile_stdout_flush ();
+        }
+        else
+        {
+            weechat_printf (NULL,
+                            weechat_gettext ("%s%s: unknown option for "
+                                             "command \"%s\""),
+                            weechat_prefix ("error"), GUILE_PLUGIN_NAME,
+                            "guile");
+        }
+    }
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_completion_cb: callback for script completion
+ */
+
+int
+weechat_guile_completion_cb (void *data, const char *completion_item,
+                             struct t_gui_buffer *buffer,
+                             struct t_gui_completion *completion)
+{
+    /* make C compiler happy */
+    (void) data;
+    (void) completion_item;
+    (void) buffer;
+    
+    script_completion (weechat_guile_plugin, completion, guile_scripts);
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_infolist_cb: callback for infolist
+ */
+
+struct t_infolist *
+weechat_guile_infolist_cb (void *data, const char *infolist_name,
+                           void *pointer, const char *arguments)
+{
+    /* make C compiler happy */
+    (void) data;
+    
+    if (!infolist_name || !infolist_name[0])
+        return NULL;
+    
+    if (weechat_strcasecmp (infolist_name, "guile_script") == 0)
+    {
+        return script_infolist_list_scripts (weechat_guile_plugin,
+                                             guile_scripts, pointer,
+                                             arguments);
+    }
+    
+    return NULL;
+}
+
+/*
+ * weechat_guile_signal_debug_dump_cb: dump Guile plugin data in WeeChat log
+ *                                     file
+ */
+
+int
+weechat_guile_signal_debug_dump_cb (void *data, const char *signal,
+                                    const char *type_data, void *signal_data)
+{
+    /* make C compiler happy */
+    (void) data;
+    (void) signal;
+    (void) type_data;
+    
+    if (!signal_data
+        || (weechat_strcasecmp ((char *)signal_data, GUILE_PLUGIN_NAME) == 0))
+    {
+        script_print_log (weechat_guile_plugin, guile_scripts);
+    }
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_signal_buffer_closed_cb: callback called when a buffer is
+ *                                        closed
+ */
+
+int
+weechat_guile_signal_buffer_closed_cb (void *data, const char *signal,
+                                       const char *type_data,
+                                       void *signal_data)
+{
+    /* make C compiler happy */
+    (void) data;
+    (void) signal;
+    (void) type_data;
+    
+    if (signal_data)
+        script_remove_buffer_callbacks (guile_scripts, signal_data);
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_timer_action_cb: timer for executing actions
+ */
+
+int
+weechat_guile_timer_action_cb (void *data, int remaining_calls)
+{
+    /* make C compiler happy */
+    (void) remaining_calls;
+
+    if (data)
+    {
+        if (data == &guile_action_install_list)
+        {
+            script_action_install (weechat_guile_plugin,
+                                   guile_scripts,
+                                   &weechat_guile_unload,
+                                   &weechat_guile_load,
+                                   &guile_action_install_list);
+        }
+        else if (data == &guile_action_remove_list)
+        {
+            script_action_remove (weechat_guile_plugin,
+                                  guile_scripts,
+                                  &weechat_guile_unload,
+                                  &guile_action_remove_list);
+        }
+    }
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_signal_script_action_cb: callback called when a script action
+ *                                        is asked (install/remove a script)
+ */
+
+int
+weechat_guile_signal_script_action_cb (void *data, const char *signal,
+                                       const char *type_data,
+                                       void *signal_data)
+{
+    /* make C compiler happy */
+    (void) data;
+    
+    if (strcmp (type_data, WEECHAT_HOOK_SIGNAL_STRING) == 0)
+    {
+        if (strcmp (signal, "guile_script_install") == 0)
+        {
+            script_action_add (&guile_action_install_list,
+                               (const char *)signal_data);
+            weechat_hook_timer (1, 0, 1,
+                                &weechat_guile_timer_action_cb,
+                                &guile_action_install_list);
+        }
+        else if (strcmp (signal, "guile_script_remove") == 0)
+        {
+            script_action_add (&guile_action_remove_list,
+                               (const char *)signal_data);
+            weechat_hook_timer (1, 0, 1,
+                                &weechat_guile_timer_action_cb,
+                                &guile_action_remove_list);
+        }
+    }
+    
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_guile_port_fill_input: fill input
+ */
+
+int
+weechat_guile_port_fill_input (SCM port)
+{
+    /* make C compiler happy */
+    (void) port;
+    
+    return ' ';
+}
+
+/*
+ * weechat_guile_port_write: write
+ */
+
+void
+weechat_guile_port_write (SCM port, const void *data, size_t size)
+{
+    char *new_stdout;
+    int length_stdout;
+    
+    /* make C compiler happy */
+    (void) port;
+    
+    /* concatenate str to guile_stdout */
+    if (guile_stdout)
+    {
+        length_stdout = strlen (guile_stdout);
+        new_stdout = realloc (guile_stdout, length_stdout + size + 1);
+        if (!new_stdout)
+        {
+            free (guile_stdout);
+            return;
+        }
+        guile_stdout = new_stdout;
+        memcpy (guile_stdout + length_stdout, data, size);
+        guile_stdout[length_stdout + size] = '\0';
+    }
+    else
+    {
+        guile_stdout = malloc (size + 1);
+        if (guile_stdout)
+        {
+            memcpy (guile_stdout, data, size);
+            guile_stdout[size] = '\0';
+        }
+    }
+    
+    /* flush stdout if at least "\n" is in string */
+    if (guile_stdout && (strchr (guile_stdout, '\n')))
+        weechat_guile_stdout_flush ();
+}
+
+/*
+ * weechat_plugin_init: initialize Guile plugin
+ */
+
+int
+weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[])
+{
+    weechat_guile_plugin = plugin;
+    
+    guile_stdout = NULL;
+    
+    scm_init_guile ();
+    
+    guile_module_weechat = scm_c_define_module ("weechat",
+                                                &weechat_guile_api_module_init,
+                                                NULL);
+    scm_c_use_module ("weechat");
+    scm_gc_protect_object (guile_module_weechat);
+    
+    guile_quiet = 1;
+    script_init (weechat_guile_plugin,
+                 argc,
+                 argv,
+                 &weechat_guile_command_cb,
+                 &weechat_guile_completion_cb,
+                 &weechat_guile_infolist_cb,
+                 &weechat_guile_signal_debug_dump_cb,
+                 &weechat_guile_signal_buffer_closed_cb,
+                 &weechat_guile_signal_script_action_cb,
+                 &weechat_guile_load_cb);
+    guile_quiet = 0;
+    
+    script_display_short_list (weechat_guile_plugin,
+                               guile_scripts);
+    
+    /* init ok */
+    return WEECHAT_RC_OK;
+}
+
+/*
+ * weechat_plugin_end: shutdown Guile interface
+ */
+
+int
+weechat_plugin_end (struct t_weechat_plugin *plugin)
+{
+    /* unload all scripts */
+    guile_quiet = 1;
+    script_end (plugin, &guile_scripts, &weechat_guile_unload_all);
+    guile_quiet = 0;
+    
+    /* unprotect module */
+    scm_gc_unprotect_object (guile_module_weechat);
+    
+    /* free some data */
+    if (guile_action_install_list)
+        free (guile_action_install_list);
+    if (guile_action_remove_list)
+        free (guile_action_remove_list);
+    
+    return WEECHAT_RC_OK;
+}

src/plugins/scripts/guile/weechat-guile.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2011 Sebastien Helleu <flashcode@flashtux.org>
+ *
+ * This file is part of WeeChat, the extensible chat client.
+ *
+ * WeeChat is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * WeeChat is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __WEECHAT_GUILE_H
+#define __WEECHAT_GUILE_H 1
+
+#define weechat_plugin weechat_guile_plugin
+#define GUILE_PLUGIN_NAME "guile"
+
+#define GUILE_CURRENT_SCRIPT_NAME ((guile_current_script) ? guile_current_script->name : "-")
+
+extern struct t_weechat_plugin *weechat_guile_plugin;
+
+extern int guile_quiet;
+extern struct t_plugin_script *guile_scripts;
+extern struct t_plugin_script *last_guile_script;
+extern struct t_plugin_script *guile_current_script;
+extern struct t_plugin_script *guile_registered_script;
+extern const char *guile_current_script_filename;
+extern SCM guile_port;
+
+extern SCM weechat_guile_hashtable_to_alist (struct t_hashtable *hashtable);
+extern struct t_hashtable *weechat_guile_alist_to_hashtable (SCM dict,
+                                                             int hashtable_size);
+extern void *weechat_guile_exec (struct t_plugin_script *script,
+                                  int ret_type, const char *function,
+                                  char *format, void **argv);
+extern int weechat_guile_port_fill_input (SCM port);
+extern void weechat_guile_port_write (SCM port, const void *data, size_t size);
+
+#endif /* __WEECHAT_GUILE_H */