summaryrefslogtreecommitdiffstats
path: root/plugins/modelines
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 17:42:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 17:42:51 +0000
commitba429d344132c088177e853cce8ff7181570b221 (patch)
tree87ebf15269b4301737abd1735baabba71be93622 /plugins/modelines
parentInitial commit. (diff)
downloadgedit-ba429d344132c088177e853cce8ff7181570b221.tar.xz
gedit-ba429d344132c088177e853cce8ff7181570b221.zip
Adding upstream version 44.2.upstream/44.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/modelines')
-rw-r--r--plugins/modelines/gedit-modeline-plugin.c225
-rw-r--r--plugins/modelines/gedit-modeline-plugin.h60
-rw-r--r--plugins/modelines/language-mappings14
-rw-r--r--plugins/modelines/meson.build42
-rw-r--r--plugins/modelines/modeline-parser.c899
-rw-r--r--plugins/modelines/modeline-parser.h36
-rw-r--r--plugins/modelines/modelines.plugin.desktop.in8
7 files changed, 1284 insertions, 0 deletions
diff --git a/plugins/modelines/gedit-modeline-plugin.c b/plugins/modelines/gedit-modeline-plugin.c
new file mode 100644
index 0000000..376d996
--- /dev/null
+++ b/plugins/modelines/gedit-modeline-plugin.c
@@ -0,0 +1,225 @@
+/*
+ * gedit-modeline-plugin.c
+ * Emacs, Kate and Vim-style modelines support for gedit.
+ *
+ * Copyright (C) 2005-2010 - Steve Frécinaux <code@istique.net>
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <glib/gi18n-lib.h>
+#include <gmodule.h>
+#include "gedit-modeline-plugin.h"
+#include "modeline-parser.h"
+
+#include <gedit/gedit-debug.h>
+#include <gedit/gedit-view-activatable.h>
+#include <gedit/gedit-view.h>
+
+struct _GeditModelinePluginPrivate
+{
+ GeditView *view;
+
+ gulong document_loaded_handler_id;
+ gulong document_saved_handler_id;
+};
+
+enum
+{
+ PROP_0,
+ PROP_VIEW
+};
+
+static void gedit_view_activatable_iface_init (GeditViewActivatableInterface *iface);
+
+G_DEFINE_DYNAMIC_TYPE_EXTENDED (GeditModelinePlugin,
+ gedit_modeline_plugin,
+ PEAS_TYPE_EXTENSION_BASE,
+ 0,
+ G_IMPLEMENT_INTERFACE_DYNAMIC (GEDIT_TYPE_VIEW_ACTIVATABLE,
+ gedit_view_activatable_iface_init)
+ G_ADD_PRIVATE_DYNAMIC (GeditModelinePlugin))
+
+static void
+gedit_modeline_plugin_constructed (GObject *object)
+{
+ gchar *data_dir;
+
+ data_dir = peas_extension_base_get_data_dir (PEAS_EXTENSION_BASE (object));
+
+ modeline_parser_init (data_dir);
+
+ g_free (data_dir);
+
+ G_OBJECT_CLASS (gedit_modeline_plugin_parent_class)->constructed (object);
+}
+
+static void
+gedit_modeline_plugin_init (GeditModelinePlugin *plugin)
+{
+ gedit_debug_message (DEBUG_PLUGINS, "GeditModelinePlugin initializing");
+
+ plugin->priv = gedit_modeline_plugin_get_instance_private (plugin);
+
+}
+
+static void
+gedit_modeline_plugin_dispose (GObject *object)
+{
+ GeditModelinePlugin *plugin = GEDIT_MODELINE_PLUGIN (object);
+
+ gedit_debug_message (DEBUG_PLUGINS, "GeditModelinePlugin disposing");
+
+ g_clear_object (&plugin->priv->view);
+
+ G_OBJECT_CLASS (gedit_modeline_plugin_parent_class)->dispose (object);
+}
+
+static void
+gedit_modeline_plugin_finalize (GObject *object)
+{
+ gedit_debug_message (DEBUG_PLUGINS, "GeditModelinePlugin finalizing");
+
+ modeline_parser_shutdown ();
+
+ G_OBJECT_CLASS (gedit_modeline_plugin_parent_class)->finalize (object);
+}
+
+static void
+gedit_modeline_plugin_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GeditModelinePlugin *plugin = GEDIT_MODELINE_PLUGIN (object);
+
+ switch (prop_id)
+ {
+ case PROP_VIEW:
+ plugin->priv->view = GEDIT_VIEW (g_value_dup_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gedit_modeline_plugin_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GeditModelinePlugin *plugin = GEDIT_MODELINE_PLUGIN (object);
+
+ switch (prop_id)
+ {
+ case PROP_VIEW:
+ g_value_set_object (value, plugin->priv->view);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+on_document_loaded_or_saved (GeditDocument *document,
+ GtkSourceView *view)
+{
+ modeline_parser_apply_modeline (view);
+}
+
+static void
+gedit_modeline_plugin_activate (GeditViewActivatable *activatable)
+{
+ GeditModelinePlugin *plugin;
+ GtkTextBuffer *doc;
+
+ gedit_debug (DEBUG_PLUGINS);
+
+ plugin = GEDIT_MODELINE_PLUGIN (activatable);
+
+ modeline_parser_apply_modeline (GTK_SOURCE_VIEW (plugin->priv->view));
+
+ doc = gtk_text_view_get_buffer (GTK_TEXT_VIEW (plugin->priv->view));
+
+ plugin->priv->document_loaded_handler_id =
+ g_signal_connect (doc, "loaded",
+ G_CALLBACK (on_document_loaded_or_saved),
+ plugin->priv->view);
+ plugin->priv->document_saved_handler_id =
+ g_signal_connect (doc, "saved",
+ G_CALLBACK (on_document_loaded_or_saved),
+ plugin->priv->view);
+}
+
+static void
+gedit_modeline_plugin_deactivate (GeditViewActivatable *activatable)
+{
+ GeditModelinePlugin *plugin;
+ GtkTextBuffer *doc;
+
+ gedit_debug (DEBUG_PLUGINS);
+
+ plugin = GEDIT_MODELINE_PLUGIN (activatable);
+
+ doc = gtk_text_view_get_buffer (GTK_TEXT_VIEW (plugin->priv->view));
+
+ g_signal_handler_disconnect (doc, plugin->priv->document_loaded_handler_id);
+ g_signal_handler_disconnect (doc, plugin->priv->document_saved_handler_id);
+}
+
+static void
+gedit_modeline_plugin_class_init (GeditModelinePluginClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->constructed = gedit_modeline_plugin_constructed;
+ object_class->dispose = gedit_modeline_plugin_dispose;
+ object_class->finalize = gedit_modeline_plugin_finalize;
+ object_class->set_property = gedit_modeline_plugin_set_property;
+ object_class->get_property = gedit_modeline_plugin_get_property;
+
+ g_object_class_override_property (object_class, PROP_VIEW, "view");
+}
+
+static void
+gedit_view_activatable_iface_init (GeditViewActivatableInterface *iface)
+{
+ iface->activate = gedit_modeline_plugin_activate;
+ iface->deactivate = gedit_modeline_plugin_deactivate;
+}
+
+static void
+gedit_modeline_plugin_class_finalize (GeditModelinePluginClass *klass)
+{
+}
+
+
+G_MODULE_EXPORT void
+peas_register_types (PeasObjectModule *module)
+{
+ gedit_modeline_plugin_register_type (G_TYPE_MODULE (module));
+
+ peas_object_module_register_extension_type (module,
+ GEDIT_TYPE_VIEW_ACTIVATABLE,
+ GEDIT_TYPE_MODELINE_PLUGIN);
+}
+
+/* ex:set ts=8 noet: */
diff --git a/plugins/modelines/gedit-modeline-plugin.h b/plugins/modelines/gedit-modeline-plugin.h
new file mode 100644
index 0000000..d3557e4
--- /dev/null
+++ b/plugins/modelines/gedit-modeline-plugin.h
@@ -0,0 +1,60 @@
+/*
+ * gedit-modeline-plugin.h
+ * Emacs, Kate and Vim-style modelines support for gedit.
+ *
+ * Copyright (C) 2005-2007 - Steve Frécinaux <code@istique.net>
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GEDIT_MODELINE_PLUGIN_H
+#define GEDIT_MODELINE_PLUGIN_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libpeas/peas-extension-base.h>
+#include <libpeas/peas-object-module.h>
+
+G_BEGIN_DECLS
+
+#define GEDIT_TYPE_MODELINE_PLUGIN (gedit_modeline_plugin_get_type ())
+#define GEDIT_MODELINE_PLUGIN(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GEDIT_TYPE_MODELINE_PLUGIN, GeditModelinePlugin))
+#define GEDIT_MODELINE_PLUGIN_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GEDIT_TYPE_MODELINE_PLUGIN, GeditModelinePluginClass))
+#define GEDIT_IS_MODELINE_PLUGIN(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GEDIT_TYPE_MODELINE_PLUGIN))
+#define GEDIT_IS_MODELINE_PLUGIN_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GEDIT_TYPE_MODELINE_PLUGIN))
+#define GEDIT_MODELINE_PLUGIN_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GEDIT_TYPE_MODELINE_PLUGIN, GeditModelinePluginClass))
+
+typedef struct _GeditModelinePlugin GeditModelinePlugin;
+typedef struct _GeditModelinePluginPrivate GeditModelinePluginPrivate;
+typedef struct _GeditModelinePluginClass GeditModelinePluginClass;
+
+struct _GeditModelinePlugin {
+ PeasExtensionBase parent;
+
+ /*< private >*/
+ GeditModelinePluginPrivate *priv;
+};
+
+struct _GeditModelinePluginClass {
+ PeasExtensionBaseClass parent_class;
+};
+
+GType gedit_modeline_plugin_get_type (void) G_GNUC_CONST;
+
+G_MODULE_EXPORT void peas_register_types (PeasObjectModule *module);
+
+G_END_DECLS
+
+#endif /* GEDIT_MODELINE_PLUGIN_H */
+/* ex:set ts=8 noet: */
diff --git a/plugins/modelines/language-mappings b/plugins/modelines/language-mappings
new file mode 100644
index 0000000..47d0029
--- /dev/null
+++ b/plugins/modelines/language-mappings
@@ -0,0 +1,14 @@
+[vim]
+cs=c-sharp
+docbk=docbook
+javascript=js
+lhaskell=haskell-literate
+spec=rpmspec
+tex=latex
+xhtml=html
+
+[emacs]
+c++=cpp
+
+[kate]
+
diff --git a/plugins/modelines/meson.build b/plugins/modelines/meson.build
new file mode 100644
index 0000000..3ff0e84
--- /dev/null
+++ b/plugins/modelines/meson.build
@@ -0,0 +1,42 @@
+libmodelines_sources = files(
+ 'gedit-modeline-plugin.c',
+ 'modeline-parser.c',
+)
+
+libmodelines_deps = [
+ libgedit_dep,
+]
+
+libmodelines_sha = shared_module(
+ 'modelines',
+ sources: libmodelines_sources,
+ include_directories: root_include_dir,
+ dependencies: libmodelines_deps,
+ install: true,
+ install_dir: join_paths(
+ pkglibdir,
+ 'plugins',
+ ),
+ name_suffix: module_suffix,
+)
+
+custom_target(
+ 'modelines.plugin',
+ input: 'modelines.plugin.desktop.in',
+ output: 'modelines.plugin',
+ command: msgfmt_plugin_cmd,
+ install: true,
+ install_dir: join_paths(
+ pkglibdir,
+ 'plugins',
+ )
+)
+
+install_data(
+ 'language-mappings',
+ install_dir: join_paths(
+ pkgdatadir,
+ 'plugins',
+ 'modelines',
+ )
+)
diff --git a/plugins/modelines/modeline-parser.c b/plugins/modelines/modeline-parser.c
new file mode 100644
index 0000000..989e111
--- /dev/null
+++ b/plugins/modelines/modeline-parser.c
@@ -0,0 +1,899 @@
+/*
+ * modeline-parser.c
+ * Emacs, Kate and Vim-style modelines support for gedit.
+ *
+ * Copyright (C) 2005-2007 - Steve Frécinaux <code@istique.net>
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <gtksourceview/gtksource.h>
+#include <gedit/gedit-debug.h>
+#include <gedit/gedit-document.h>
+#include <gedit/gedit-settings.h>
+#include <gedit/gedit-utils.h>
+#include "modeline-parser.h"
+
+#define MODELINES_LANGUAGE_MAPPINGS_FILE "language-mappings"
+
+/* base dir to lookup configuration files */
+static gchar *modelines_data_dir;
+
+/* Mappings: language name -> Gedit language ID */
+static GHashTable *vim_languages = NULL;
+static GHashTable *emacs_languages = NULL;
+static GHashTable *kate_languages = NULL;
+
+typedef enum
+{
+ MODELINE_SET_NONE = 0,
+ MODELINE_SET_TAB_WIDTH = 1 << 0,
+ MODELINE_SET_INDENT_WIDTH = 1 << 1,
+ MODELINE_SET_WRAP_MODE = 1 << 2,
+ MODELINE_SET_SHOW_RIGHT_MARGIN = 1 << 3,
+ MODELINE_SET_RIGHT_MARGIN_POSITION = 1 << 4,
+ MODELINE_SET_LANGUAGE = 1 << 5,
+ MODELINE_SET_INSERT_SPACES = 1 << 6
+} ModelineSet;
+
+typedef struct _ModelineOptions
+{
+ gchar *language_id;
+
+ /* these options are similar to the GtkSourceView properties of the
+ * same names.
+ */
+ gboolean insert_spaces;
+ guint tab_width;
+ guint indent_width;
+ GtkWrapMode wrap_mode;
+ gboolean display_right_margin;
+ guint right_margin_position;
+
+ ModelineSet set;
+} ModelineOptions;
+
+#define MODELINE_OPTIONS_DATA_KEY "ModelineOptionsDataKey"
+
+static gboolean
+has_option (ModelineOptions *options,
+ ModelineSet set)
+{
+ return options->set & set;
+}
+
+void
+modeline_parser_init (const gchar *data_dir)
+{
+ if (modelines_data_dir == NULL)
+ {
+ modelines_data_dir = g_strdup (data_dir);
+ }
+}
+
+void
+modeline_parser_shutdown ()
+{
+ if (vim_languages != NULL)
+ g_hash_table_unref (vim_languages);
+
+ if (emacs_languages != NULL)
+ g_hash_table_unref (emacs_languages);
+
+ if (kate_languages != NULL)
+ g_hash_table_unref (kate_languages);
+
+ vim_languages = NULL;
+ emacs_languages = NULL;
+ kate_languages = NULL;
+
+ g_free (modelines_data_dir);
+ modelines_data_dir = NULL;
+}
+
+static GHashTable *
+load_language_mappings_group (GKeyFile *key_file, const gchar *group)
+{
+ GHashTable *table;
+ gchar **keys;
+ gsize length = 0;
+ int i;
+
+ table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+
+ keys = g_key_file_get_keys (key_file, group, &length, NULL);
+
+ gedit_debug_message (DEBUG_PLUGINS,
+ "%" G_GSIZE_FORMAT " mappings in group %s",
+ length, group);
+
+ for (i = 0; i < length; i++)
+ {
+ /* steal the name string */
+ gchar *name = keys[i];
+ gchar *id = g_key_file_get_string (key_file, group, name, NULL);
+ g_hash_table_insert (table, name, id);
+ }
+ g_free (keys);
+
+ return table;
+}
+
+/* lazy loading of language mappings */
+static void
+load_language_mappings (void)
+{
+ gchar *fname;
+ GKeyFile *mappings;
+ GError *error = NULL;
+
+ fname = g_build_filename (modelines_data_dir,
+ MODELINES_LANGUAGE_MAPPINGS_FILE,
+ NULL);
+
+ mappings = g_key_file_new ();
+
+ if (g_key_file_load_from_file (mappings, fname, 0, &error))
+ {
+ gedit_debug_message (DEBUG_PLUGINS,
+ "Loaded language mappings from %s",
+ fname);
+
+ vim_languages = load_language_mappings_group (mappings, "vim");
+ emacs_languages = load_language_mappings_group (mappings, "emacs");
+ kate_languages = load_language_mappings_group (mappings, "kate");
+ }
+ else
+ {
+ gedit_debug_message (DEBUG_PLUGINS,
+ "Failed to loaded language mappings from %s: %s",
+ fname, error->message);
+
+ g_error_free (error);
+ }
+
+ g_key_file_free (mappings);
+ g_free (fname);
+}
+
+static gchar *
+get_language_id (const gchar *language_name, GHashTable *mapping)
+{
+ gchar *name;
+ gchar *language_id = NULL;
+
+ name = g_ascii_strdown (language_name, -1);
+
+ if (mapping != NULL)
+ {
+ language_id = g_hash_table_lookup (mapping, name);
+
+ if (language_id != NULL)
+ {
+ g_free (name);
+ return g_strdup (language_id);
+ }
+ }
+
+ /* by default assume that the gtksourcevuew id is the same */
+ return name;
+}
+
+static gchar *
+get_language_id_vim (const gchar *language_name)
+{
+ if (vim_languages == NULL)
+ load_language_mappings ();
+
+ return get_language_id (language_name, vim_languages);
+}
+
+static gchar *
+get_language_id_emacs (const gchar *language_name)
+{
+ if (emacs_languages == NULL)
+ load_language_mappings ();
+
+ return get_language_id (language_name, emacs_languages);
+}
+
+static gchar *
+get_language_id_kate (const gchar *language_name)
+{
+ if (kate_languages == NULL)
+ load_language_mappings ();
+
+ return get_language_id (language_name, kate_languages);
+}
+
+static gboolean
+skip_whitespaces (gchar **s)
+{
+ while (**s != '\0' && g_ascii_isspace (**s))
+ (*s)++;
+ return **s != '\0';
+}
+
+/* Parse vi(m) modelines.
+ * Vi(m) modelines looks like this:
+ * - first form: [text]{white}{vi:|vim:|ex:}[white]{options}
+ * - second form: [text]{white}{vi:|vim:|ex:}[white]se[t] {options}:[text]
+ * They can happen on the three first or last lines.
+ */
+static gchar *
+parse_vim_modeline (gchar *s,
+ ModelineOptions *options)
+{
+ gboolean in_set = FALSE;
+ gboolean neg;
+ guint intval;
+ GString *key, *value;
+
+ key = g_string_sized_new (8);
+ value = g_string_sized_new (8);
+
+ while (*s != '\0' && !(in_set && *s == ':'))
+ {
+ while (*s != '\0' && (*s == ':' || g_ascii_isspace (*s)))
+ s++;
+
+ if (*s == '\0')
+ break;
+
+ if (strncmp (s, "set ", 4) == 0 ||
+ strncmp (s, "se ", 3) == 0)
+ {
+ s = strchr(s, ' ') + 1;
+ in_set = TRUE;
+ }
+
+ neg = FALSE;
+ if (strncmp (s, "no", 2) == 0)
+ {
+ neg = TRUE;
+ s += 2;
+ }
+
+ g_string_assign (key, "");
+ g_string_assign (value, "");
+
+ while (*s != '\0' && *s != ':' && *s != '=' &&
+ !g_ascii_isspace (*s))
+ {
+ g_string_append_c (key, *s);
+ s++;
+ }
+
+ if (*s == '=')
+ {
+ s++;
+ while (*s != '\0' && *s != ':' &&
+ !g_ascii_isspace (*s))
+ {
+ g_string_append_c (value, *s);
+ s++;
+ }
+ }
+
+ if (strcmp (key->str, "ft") == 0 ||
+ strcmp (key->str, "filetype") == 0)
+ {
+ g_free (options->language_id);
+ options->language_id = get_language_id_vim (value->str);
+
+ options->set |= MODELINE_SET_LANGUAGE;
+ }
+ else if (strcmp (key->str, "et") == 0 ||
+ strcmp (key->str, "expandtab") == 0)
+ {
+ options->insert_spaces = !neg;
+ options->set |= MODELINE_SET_INSERT_SPACES;
+ }
+ else if (strcmp (key->str, "ts") == 0 ||
+ strcmp (key->str, "tabstop") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->tab_width = intval;
+ options->set |= MODELINE_SET_TAB_WIDTH;
+ }
+ }
+ else if (strcmp (key->str, "sw") == 0 ||
+ strcmp (key->str, "shiftwidth") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->indent_width = intval;
+ options->set |= MODELINE_SET_INDENT_WIDTH;
+ }
+ }
+ else if (strcmp (key->str, "wrap") == 0)
+ {
+ options->wrap_mode = neg ? GTK_WRAP_NONE : GTK_WRAP_WORD;
+
+ options->set |= MODELINE_SET_WRAP_MODE;
+ }
+ else if (strcmp (key->str, "textwidth") == 0 ||
+ strcmp (key->str, "tw") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->right_margin_position = intval;
+ options->display_right_margin = TRUE;
+
+ options->set |= MODELINE_SET_SHOW_RIGHT_MARGIN |
+ MODELINE_SET_RIGHT_MARGIN_POSITION;
+
+ }
+ }
+ }
+
+ g_string_free (key, TRUE);
+ g_string_free (value, TRUE);
+
+ return s;
+}
+
+/* Parse emacs modelines.
+ * Emacs modelines looks like this: "-*- key1: value1; key2: value2 -*-"
+ * They can happen on the first line, or on the second one if the first line is
+ * a shebang (#!)
+ * See http://www.delorie.com/gnu/docs/emacs/emacs_486.html
+ */
+static gchar *
+parse_emacs_modeline (gchar *s,
+ ModelineOptions *options)
+{
+ guint intval;
+ GString *key, *value;
+
+ key = g_string_sized_new (8);
+ value = g_string_sized_new (8);
+
+ while (*s != '\0')
+ {
+ while (*s != '\0' && (*s == ';' || g_ascii_isspace (*s)))
+ s++;
+ if (*s == '\0' || strncmp (s, "-*-", 3) == 0)
+ break;
+
+ g_string_assign (key, "");
+ g_string_assign (value, "");
+
+ while (*s != '\0' && *s != ':' && *s != ';' &&
+ !g_ascii_isspace (*s))
+ {
+ g_string_append_c (key, *s);
+ s++;
+ }
+
+ if (!skip_whitespaces (&s))
+ break;
+
+ if (*s != ':')
+ continue;
+ s++;
+
+ if (!skip_whitespaces (&s))
+ break;
+
+ while (*s != '\0' && *s != ';' && !g_ascii_isspace (*s))
+ {
+ g_string_append_c (value, *s);
+ s++;
+ }
+
+ gedit_debug_message (DEBUG_PLUGINS,
+ "Emacs modeline bit: %s = %s",
+ key->str, value->str);
+
+ /* "Mode" key is case insenstive */
+ if (g_ascii_strcasecmp (key->str, "Mode") == 0)
+ {
+ g_free (options->language_id);
+ options->language_id = get_language_id_emacs (value->str);
+
+ options->set |= MODELINE_SET_LANGUAGE;
+ }
+ else if (strcmp (key->str, "tab-width") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->tab_width = intval;
+ options->set |= MODELINE_SET_TAB_WIDTH;
+ }
+ }
+ else if (strcmp (key->str, "indent-offset") == 0 ||
+ strcmp (key->str, "c-basic-offset") == 0 ||
+ strcmp (key->str, "js-indent-level") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->indent_width = intval;
+ options->set |= MODELINE_SET_INDENT_WIDTH;
+ }
+ }
+ else if (strcmp (key->str, "indent-tabs-mode") == 0)
+ {
+ intval = strcmp (value->str, "nil") == 0;
+ options->insert_spaces = intval;
+
+ options->set |= MODELINE_SET_INSERT_SPACES;
+ }
+ else if (strcmp (key->str, "autowrap") == 0)
+ {
+ intval = strcmp (value->str, "nil") != 0;
+ options->wrap_mode = intval ? GTK_WRAP_WORD : GTK_WRAP_NONE;
+
+ options->set |= MODELINE_SET_WRAP_MODE;
+ }
+ }
+
+ g_string_free (key, TRUE);
+ g_string_free (value, TRUE);
+
+ return *s == '\0' ? s : s + 2;
+}
+
+/*
+ * Parse kate modelines.
+ * Kate modelines are of the form "kate: key1 value1; key2 value2;"
+ * These can happen on the 10 first or 10 last lines of the buffer.
+ * See http://wiki.kate-editor.org/index.php/Modelines
+ */
+static gchar *
+parse_kate_modeline (gchar *s,
+ ModelineOptions *options)
+{
+ guint intval;
+ GString *key, *value;
+
+ key = g_string_sized_new (8);
+ value = g_string_sized_new (8);
+
+ while (*s != '\0')
+ {
+ while (*s != '\0' && (*s == ';' || g_ascii_isspace (*s)))
+ s++;
+ if (*s == '\0')
+ break;
+
+ g_string_assign (key, "");
+ g_string_assign (value, "");
+
+ while (*s != '\0' && *s != ';' && !g_ascii_isspace (*s))
+ {
+ g_string_append_c (key, *s);
+ s++;
+ }
+
+ if (!skip_whitespaces (&s))
+ break;
+ if (*s == ';')
+ continue;
+
+ while (*s != '\0' && *s != ';' &&
+ !g_ascii_isspace (*s))
+ {
+ g_string_append_c (value, *s);
+ s++;
+ }
+
+ gedit_debug_message (DEBUG_PLUGINS,
+ "Kate modeline bit: %s = %s",
+ key->str, value->str);
+
+ if (strcmp (key->str, "hl") == 0 ||
+ strcmp (key->str, "syntax") == 0)
+ {
+ g_free (options->language_id);
+ options->language_id = get_language_id_kate (value->str);
+
+ options->set |= MODELINE_SET_LANGUAGE;
+ }
+ else if (strcmp (key->str, "tab-width") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->tab_width = intval;
+ options->set |= MODELINE_SET_TAB_WIDTH;
+ }
+ }
+ else if (strcmp (key->str, "indent-width") == 0)
+ {
+ intval = atoi (value->str);
+ if (intval) options->indent_width = intval;
+ }
+ else if (strcmp (key->str, "space-indent") == 0)
+ {
+ intval = strcmp (value->str, "on") == 0 ||
+ strcmp (value->str, "true") == 0 ||
+ strcmp (value->str, "1") == 0;
+
+ options->insert_spaces = intval;
+ options->set |= MODELINE_SET_INSERT_SPACES;
+ }
+ else if (strcmp (key->str, "word-wrap") == 0)
+ {
+ intval = strcmp (value->str, "on") == 0 ||
+ strcmp (value->str, "true") == 0 ||
+ strcmp (value->str, "1") == 0;
+
+ options->wrap_mode = intval ? GTK_WRAP_WORD : GTK_WRAP_NONE;
+
+ options->set |= MODELINE_SET_WRAP_MODE;
+ }
+ else if (strcmp (key->str, "word-wrap-column") == 0)
+ {
+ intval = atoi (value->str);
+
+ if (intval)
+ {
+ options->right_margin_position = intval;
+ options->display_right_margin = TRUE;
+
+ options->set |= MODELINE_SET_RIGHT_MARGIN_POSITION |
+ MODELINE_SET_SHOW_RIGHT_MARGIN;
+ }
+ }
+ }
+
+ g_string_free (key, TRUE);
+ g_string_free (value, TRUE);
+
+ return s;
+}
+
+/* Scan a line for vi(m)/emacs/kate modelines.
+ * Line numbers are counted starting at one.
+ */
+static void
+parse_modeline (gchar *line,
+ gint line_number,
+ gint line_count,
+ ModelineOptions *options)
+{
+ gchar *s = line;
+
+ /* look for the beginning of a modeline */
+ while (s != NULL && *s != '\0')
+ {
+ if (s > line && !g_ascii_isspace (*(s - 1)))
+ {
+ s++;
+ continue;
+ }
+
+ if ((line_number <= 3 || line_number > line_count - 3) &&
+ (strncmp (s, "ex:", 3) == 0 ||
+ strncmp (s, "vi:", 3) == 0 ||
+ strncmp (s, "vim:", 4) == 0))
+ {
+ gedit_debug_message (DEBUG_PLUGINS, "Vim modeline on line %d", line_number);
+
+ while (*s != ':')
+ {
+ s++;
+ }
+
+ s = parse_vim_modeline (s + 1, options);
+ }
+ else if (line_number <= 2 && strncmp (s, "-*-", 3) == 0)
+ {
+ gedit_debug_message (DEBUG_PLUGINS, "Emacs modeline on line %d", line_number);
+
+ s = parse_emacs_modeline (s + 3, options);
+ }
+ else if ((line_number <= 10 || line_number > line_count - 10) &&
+ strncmp (s, "kate:", 5) == 0)
+ {
+ gedit_debug_message (DEBUG_PLUGINS, "Kate modeline on line %d", line_number);
+
+ s = parse_kate_modeline (s + 5, options);
+ }
+ else
+ {
+ s++;
+ }
+ }
+}
+
+static gboolean
+check_previous (GtkSourceView *view,
+ ModelineOptions *previous,
+ ModelineSet set)
+{
+ GtkSourceBuffer *buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (GTK_TEXT_VIEW (view)));
+
+ /* Do not restore default when this is the first time */
+ if (!previous)
+ return FALSE;
+
+ /* Do not restore default when previous was not set */
+ if (!(previous->set & set))
+ return FALSE;
+
+ /* Only restore default when setting has not changed */
+ switch (set)
+ {
+ case MODELINE_SET_INSERT_SPACES:
+ return gtk_source_view_get_insert_spaces_instead_of_tabs (view) ==
+ previous->insert_spaces;
+ break;
+ case MODELINE_SET_TAB_WIDTH:
+ return gtk_source_view_get_tab_width (view) == previous->tab_width;
+ break;
+ case MODELINE_SET_INDENT_WIDTH:
+ return gtk_source_view_get_indent_width (view) == previous->indent_width;
+ break;
+ case MODELINE_SET_WRAP_MODE:
+ return gtk_text_view_get_wrap_mode (GTK_TEXT_VIEW (view)) ==
+ previous->wrap_mode;
+ break;
+ case MODELINE_SET_RIGHT_MARGIN_POSITION:
+ return gtk_source_view_get_right_margin_position (view) ==
+ previous->right_margin_position;
+ break;
+ case MODELINE_SET_SHOW_RIGHT_MARGIN:
+ return gtk_source_view_get_show_right_margin (view) ==
+ previous->display_right_margin;
+ break;
+ case MODELINE_SET_LANGUAGE:
+ {
+ GtkSourceLanguage *language = gtk_source_buffer_get_language (buffer);
+
+ return (language == NULL && previous->language_id == NULL) ||
+ (language != NULL && g_strcmp0 (gtk_source_language_get_id (language),
+ previous->language_id) == 0);
+ }
+ break;
+ default:
+ return FALSE;
+ break;
+ }
+}
+
+static void
+free_modeline_options (ModelineOptions *options)
+{
+ g_free (options->language_id);
+ g_slice_free (ModelineOptions, options);
+}
+
+void
+modeline_parser_apply_modeline (GtkSourceView *view)
+{
+ ModelineOptions options;
+ GtkTextBuffer *buffer;
+ GtkTextIter iter, liter;
+ gint line_count;
+ GSettings *settings;
+
+ options.language_id = NULL;
+ options.set = MODELINE_SET_NONE;
+
+ buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+ gtk_text_buffer_get_start_iter (buffer, &iter);
+
+ line_count = gtk_text_buffer_get_line_count (buffer);
+
+ /* Parse the modelines on the 10 first lines... */
+ while ((gtk_text_iter_get_line (&iter) < 10) &&
+ !gtk_text_iter_is_end (&iter))
+ {
+ gchar *line;
+
+ liter = iter;
+ gtk_text_iter_forward_to_line_end (&iter);
+ line = gtk_text_buffer_get_text (buffer, &liter, &iter, TRUE);
+
+ parse_modeline (line,
+ 1 + gtk_text_iter_get_line (&iter),
+ line_count,
+ &options);
+
+ gtk_text_iter_forward_line (&iter);
+
+ g_free (line);
+ }
+
+ /* ...and on the 10 last ones (modelines are not allowed in between) */
+ if (!gtk_text_iter_is_end (&iter))
+ {
+ gint cur_line;
+ guint remaining_lines;
+
+ /* we are on the 11th line (count from 0) */
+ cur_line = gtk_text_iter_get_line (&iter);
+ /* g_assert (10 == cur_line); */
+
+ remaining_lines = line_count - cur_line - 1;
+
+ if (remaining_lines > 10)
+ {
+ gtk_text_buffer_get_end_iter (buffer, &iter);
+ gtk_text_iter_backward_lines (&iter, 9);
+ }
+ }
+
+ while (!gtk_text_iter_is_end (&iter))
+ {
+ gchar *line;
+
+ liter = iter;
+ gtk_text_iter_forward_to_line_end (&iter);
+ line = gtk_text_buffer_get_text (buffer, &liter, &iter, TRUE);
+
+ parse_modeline (line,
+ 1 + gtk_text_iter_get_line (&iter),
+ line_count,
+ &options);
+
+ gtk_text_iter_forward_line (&iter);
+
+ g_free (line);
+ }
+
+ /* Try to set language */
+ if (has_option (&options, MODELINE_SET_LANGUAGE) && options.language_id)
+ {
+ if (g_ascii_strcasecmp (options.language_id, "text") == 0)
+ {
+ gedit_document_set_language (GEDIT_DOCUMENT (buffer),
+ NULL);
+ }
+ else
+ {
+ GtkSourceLanguageManager *manager;
+ GtkSourceLanguage *language;
+
+ manager = gtk_source_language_manager_get_default ();
+
+ language = gtk_source_language_manager_get_language
+ (manager, options.language_id);
+ if (language != NULL)
+ {
+ gedit_document_set_language (GEDIT_DOCUMENT (buffer),
+ language);
+ }
+ else
+ {
+ gedit_debug_message (DEBUG_PLUGINS,
+ "Unknown language `%s'",
+ options.language_id);
+ }
+ }
+ }
+
+ ModelineOptions *previous = g_object_get_data (G_OBJECT (buffer),
+ MODELINE_OPTIONS_DATA_KEY);
+
+ settings = g_settings_new ("org.gnome.gedit.preferences.editor");
+
+ /* Apply the options we got from modelines and restore defaults if
+ we set them before */
+ if (has_option (&options, MODELINE_SET_INSERT_SPACES))
+ {
+ gtk_source_view_set_insert_spaces_instead_of_tabs
+ (view, options.insert_spaces);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_INSERT_SPACES))
+ {
+ gboolean insert_spaces;
+
+ insert_spaces = g_settings_get_boolean (settings, GEDIT_SETTINGS_INSERT_SPACES);
+
+ gtk_source_view_set_insert_spaces_instead_of_tabs (view, insert_spaces);
+ }
+
+ if (has_option (&options, MODELINE_SET_TAB_WIDTH))
+ {
+ gtk_source_view_set_tab_width (view, options.tab_width);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_TAB_WIDTH))
+ {
+ guint tab_width;
+
+ g_settings_get (settings, GEDIT_SETTINGS_TABS_SIZE, "u", &tab_width);
+
+ gtk_source_view_set_tab_width (view, tab_width);
+ }
+
+ if (has_option (&options, MODELINE_SET_INDENT_WIDTH))
+ {
+ gtk_source_view_set_indent_width (view, options.indent_width);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_INDENT_WIDTH))
+ {
+ gtk_source_view_set_indent_width (view, -1);
+ }
+
+ if (has_option (&options, MODELINE_SET_WRAP_MODE))
+ {
+ gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), options.wrap_mode);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_WRAP_MODE))
+ {
+ GtkWrapMode mode;
+
+ mode = g_settings_get_enum (settings,
+ GEDIT_SETTINGS_WRAP_MODE);
+ gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), mode);
+ }
+
+ if (has_option (&options, MODELINE_SET_RIGHT_MARGIN_POSITION))
+ {
+ gtk_source_view_set_right_margin_position (view, options.right_margin_position);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_RIGHT_MARGIN_POSITION))
+ {
+ guint right_margin_pos;
+
+ g_settings_get (settings, GEDIT_SETTINGS_RIGHT_MARGIN_POSITION, "u",
+ &right_margin_pos);
+ gtk_source_view_set_right_margin_position (view,
+ right_margin_pos);
+ }
+
+ if (has_option (&options, MODELINE_SET_SHOW_RIGHT_MARGIN))
+ {
+ gtk_source_view_set_show_right_margin (view, options.display_right_margin);
+ }
+ else if (check_previous (view, previous, MODELINE_SET_SHOW_RIGHT_MARGIN))
+ {
+ gboolean display_right_margin;
+
+ display_right_margin = g_settings_get_boolean (settings,
+ GEDIT_SETTINGS_DISPLAY_RIGHT_MARGIN);
+ gtk_source_view_set_show_right_margin (view, display_right_margin);
+ }
+
+ if (previous)
+ {
+ g_free (previous->language_id);
+ *previous = options;
+ previous->language_id = g_strdup (options.language_id);
+ }
+ else
+ {
+ previous = g_slice_new (ModelineOptions);
+ *previous = options;
+ previous->language_id = g_strdup (options.language_id);
+
+ g_object_set_data_full (G_OBJECT (buffer),
+ MODELINE_OPTIONS_DATA_KEY,
+ previous,
+ (GDestroyNotify)free_modeline_options);
+ }
+
+ g_object_unref (settings);
+ g_free (options.language_id);
+}
+
+/* vi:ts=8 */
diff --git a/plugins/modelines/modeline-parser.h b/plugins/modelines/modeline-parser.h
new file mode 100644
index 0000000..0fbf9a1
--- /dev/null
+++ b/plugins/modelines/modeline-parser.h
@@ -0,0 +1,36 @@
+/*
+ * modelie-parser.h
+ * Emacs, Kate and Vim-style modelines support for gedit.
+ *
+ * Copyright (C) 2005-2007 - Steve Frécinaux <code@istique.net>
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MODELINE_PARSER_H
+#define MODELINE_PARSER_H
+
+#include <glib.h>
+#include <gtksourceview/gtksource.h>
+
+G_BEGIN_DECLS
+
+void modeline_parser_init (const gchar *data_dir);
+void modeline_parser_shutdown (void);
+void modeline_parser_apply_modeline (GtkSourceView *view);
+
+G_END_DECLS
+
+#endif /* MODELINE_PARSER_H */
+/* ex:set ts=8 noet: */
diff --git a/plugins/modelines/modelines.plugin.desktop.in b/plugins/modelines/modelines.plugin.desktop.in
new file mode 100644
index 0000000..d334c55
--- /dev/null
+++ b/plugins/modelines/modelines.plugin.desktop.in
@@ -0,0 +1,8 @@
+[Plugin]
+Module=modelines
+IAge=3
+Name=Modelines
+Description=Emacs, Kate and Vim-style modelines support for gedit.
+Authors=Steve Frécinaux <steve@istique.net>
+Copyright=Copyright © 2005 Steve Frécinaux
+Website=http://www.gedit.org