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xed/gedit/gedit-utils.c

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/*
* gedit-utils.c
* This file is part of gedit
*
* Copyright (C) 1998, 1999 Alex Roberts, Evan Lawrence
* Copyright (C) 2000, 2002 Chema Celorio, Paolo Maggi
* Copyright (C) 2003-2005 Paolo Maggi
*
* 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 of the License, 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the gedit Team, 1998-2005. See the AUTHORS file for a
* list of people on the gedit Team.
* See the ChangeLog files for a list of changes.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <string.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <gio/gio.h>
#include "gedit-utils.h"
#include "gedit-document.h"
#include "gedit-prefs-manager.h"
#include "gedit-debug.h"
/* For the workspace/viewport stuff */
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#endif
#define STDIN_DELAY_MICROSECONDS 100000
/* Returns true if uri is a file: uri and is not a chained uri */
gboolean
gedit_utils_uri_has_file_scheme (const gchar *uri)
{
GFile *gfile;
gboolean res;
gfile = g_file_new_for_uri (uri);
res = g_file_has_uri_scheme (gfile, "file");
g_object_unref (gfile);
return res;
}
/* FIXME: we should check for chained URIs */
gboolean
gedit_utils_uri_has_writable_scheme (const gchar *uri)
{
GFile *gfile;
gchar *scheme;
GSList *writable_schemes;
gboolean res;
gfile = g_file_new_for_uri (uri);
scheme = g_file_get_uri_scheme (gfile);
g_return_val_if_fail (scheme != NULL, FALSE);
g_object_unref (gfile);
writable_schemes = gedit_prefs_manager_get_writable_vfs_schemes ();
/* CHECK: should we use g_ascii_strcasecmp? - Paolo (Nov 6, 2005) */
res = (g_slist_find_custom (writable_schemes,
scheme,
(GCompareFunc)strcmp) != NULL);
g_slist_foreach (writable_schemes, (GFunc)g_free, NULL);
g_slist_free (writable_schemes);
g_free (scheme);
return res;
}
static void
widget_get_origin (GtkWidget *widget, gint *x, gint *y)
{
GdkWindow *window;
window = gtk_widget_get_window (widget);
gdk_window_get_origin (window, x, y);
}
void
gedit_utils_menu_position_under_widget (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkWidget *widget;
GtkRequisition requisition;
widget = GTK_WIDGET (user_data);
widget_get_origin (widget, x, y);
gtk_widget_size_request (GTK_WIDGET (menu), &requisition);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
{
*x += widget->allocation.x + widget->allocation.width - requisition.width;
}
else
{
*x += widget->allocation.x;
}
*y += widget->allocation.y + widget->allocation.height;
*push_in = TRUE;
}
void
gedit_utils_menu_position_under_tree_view (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkTreeView *tree = GTK_TREE_VIEW (user_data);
GtkTreeModel *model;
GtkTreeSelection *selection;
GtkTreeIter iter;
model = gtk_tree_view_get_model (tree);
g_return_if_fail (model != NULL);
selection = gtk_tree_view_get_selection (tree);
g_return_if_fail (selection != NULL);
if (gtk_tree_selection_get_selected (selection, NULL, &iter))
{
GtkTreePath *path;
GdkRectangle rect;
widget_get_origin (GTK_WIDGET (tree), x, y);
path = gtk_tree_model_get_path (model, &iter);
gtk_tree_view_get_cell_area (tree, path,
gtk_tree_view_get_column (tree, 0), /* FIXME 0 for RTL ? */
&rect);
gtk_tree_path_free (path);
*x += rect.x;
*y += rect.y + rect.height;
if (gtk_widget_get_direction (GTK_WIDGET (tree)) == GTK_TEXT_DIR_RTL)
{
GtkRequisition requisition;
gtk_widget_size_request (GTK_WIDGET (menu), &requisition);
*x += rect.width - requisition.width;
}
}
else
{
/* no selection -> regular "under widget" positioning */
gedit_utils_menu_position_under_widget (menu,
x, y, push_in,
tree);
}
}
/* FIXME: remove this with gtk 2.12, it has gdk_color_to_string */
gchar *
gedit_gdk_color_to_string (GdkColor color)
{
return g_strdup_printf ("#%04x%04x%04x",
color.red,
color.green,
color.blue);
}
GtkWidget *
gedit_gtk_button_new_with_stock_icon (const gchar *label,
const gchar *stock_id)
{
GtkWidget *button;
button = gtk_button_new_with_mnemonic (label);
gtk_button_set_image (GTK_BUTTON (button),
gtk_image_new_from_stock (stock_id,
GTK_ICON_SIZE_BUTTON));
return button;
}
GtkWidget *
gedit_dialog_add_button (GtkDialog *dialog,
const gchar *text,
const gchar *stock_id,
gint response_id)
{
GtkWidget *button;
g_return_val_if_fail (GTK_IS_DIALOG (dialog), NULL);
g_return_val_if_fail (text != NULL, NULL);
g_return_val_if_fail (stock_id != NULL, NULL);
button = gedit_gtk_button_new_with_stock_icon (text, stock_id);
g_return_val_if_fail (button != NULL, NULL);
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_widget_show (button);
gtk_dialog_add_action_widget (dialog, button, response_id);
return button;
}
/*
* n: len of the string in bytes
*/
gboolean
g_utf8_caselessnmatch (const char *s1, const char *s2, gssize n1, gssize n2)
{
gchar *casefold;
gchar *normalized_s1;
gchar *normalized_s2;
gint len_s1;
gint len_s2;
gboolean ret = FALSE;
g_return_val_if_fail (s1 != NULL, FALSE);
g_return_val_if_fail (s2 != NULL, FALSE);
g_return_val_if_fail (n1 > 0, FALSE);
g_return_val_if_fail (n2 > 0, FALSE);
casefold = g_utf8_casefold (s1, n1);
normalized_s1 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
g_free (casefold);
casefold = g_utf8_casefold (s2, n2);
normalized_s2 = g_utf8_normalize (casefold, -1, G_NORMALIZE_NFD);
g_free (casefold);
len_s1 = strlen (normalized_s1);
len_s2 = strlen (normalized_s2);
if (len_s1 < len_s2)
goto finally_2;
ret = (strncmp (normalized_s1, normalized_s2, len_s2) == 0);
finally_2:
g_free (normalized_s1);
g_free (normalized_s2);
return ret;
}
/**
* gedit_utils_set_atk_name_description
* @widget : The Gtk widget for which name/description to be set
* @name : Atk name string
* @description : Atk description string
* Description : This function sets up name and description
* for a specified gtk widget.
*/
void
gedit_utils_set_atk_name_description (GtkWidget *widget,
const gchar *name,
const gchar *description)
{
AtkObject *aobj;
aobj = gtk_widget_get_accessible (widget);
if (!(GTK_IS_ACCESSIBLE (aobj)))
return;
if(name)
atk_object_set_name (aobj, name);
if(description)
atk_object_set_description (aobj, description);
}
/**
* gedit_set_atk__relation
* @obj1,@obj2 : specified widgets.
* @rel_type : the type of relation to set up.
* Description : This function establishes atk relation
* between 2 specified widgets.
*/
void
gedit_utils_set_atk_relation (GtkWidget *obj1,
GtkWidget *obj2,
AtkRelationType rel_type )
{
AtkObject *atk_obj1, *atk_obj2;
AtkRelationSet *relation_set;
AtkObject *targets[1];
AtkRelation *relation;
atk_obj1 = gtk_widget_get_accessible (obj1);
atk_obj2 = gtk_widget_get_accessible (obj2);
if (!(GTK_IS_ACCESSIBLE (atk_obj1)) || !(GTK_IS_ACCESSIBLE (atk_obj2)))
return;
relation_set = atk_object_ref_relation_set (atk_obj1);
targets[0] = atk_obj2;
relation = atk_relation_new (targets, 1, rel_type);
atk_relation_set_add (relation_set, relation);
g_object_unref (G_OBJECT (relation));
}
gboolean
gedit_utils_uri_exists (const gchar* text_uri)
{
GFile *gfile;
gboolean res;
g_return_val_if_fail (text_uri != NULL, FALSE);
gedit_debug_message (DEBUG_UTILS, "text_uri: %s", text_uri);
gfile = g_file_new_for_uri (text_uri);
res = g_file_query_exists (gfile, NULL);
g_object_unref (gfile);
gedit_debug_message (DEBUG_UTILS, res ? "TRUE" : "FALSE");
return res;
}
gchar *
gedit_utils_escape_search_text (const gchar* text)
{
GString *str;
gint length;
const gchar *p;
const gchar *end;
if (text == NULL)
return NULL;
gedit_debug_message (DEBUG_SEARCH, "Text: %s", text);
length = strlen (text);
/* no escape when typing.
* The short circuit works only for ascii, but we only
* care about not escaping a single '\' */
if (length == 1)
return g_strdup (text);
str = g_string_new ("");
p = text;
end = text + length;
while (p != end)
{
const gchar *next;
next = g_utf8_next_char (p);
switch (*p)
{
case '\n':
g_string_append (str, "\\n");
break;
case '\r':
g_string_append (str, "\\r");
break;
case '\t':
g_string_append (str, "\\t");
break;
case '\\':
g_string_append (str, "\\\\");
break;
default:
g_string_append_len (str, p, next - p);
break;
}
p = next;
}
return g_string_free (str, FALSE);
}
gchar *
gedit_utils_unescape_search_text (const gchar *text)
{
GString *str;
gint length;
gboolean drop_prev = FALSE;
const gchar *cur;
const gchar *end;
const gchar *prev;
if (text == NULL)
return NULL;
length = strlen (text);
str = g_string_new ("");
cur = text;
end = text + length;
prev = NULL;
while (cur != end)
{
const gchar *next;
next = g_utf8_next_char (cur);
if (prev && (*prev == '\\'))
{
switch (*cur)
{
case 'n':
str = g_string_append (str, "\n");
break;
case 'r':
str = g_string_append (str, "\r");
break;
case 't':
str = g_string_append (str, "\t");
break;
case '\\':
str = g_string_append (str, "\\");
drop_prev = TRUE;
break;
default:
str = g_string_append (str, "\\");
str = g_string_append_len (str, cur, next - cur);
break;
}
}
else if (*cur != '\\')
{
str = g_string_append_len (str, cur, next - cur);
}
else if ((next == end) && (*cur == '\\'))
{
str = g_string_append (str, "\\");
}
if (!drop_prev)
{
prev = cur;
}
else
{
prev = NULL;
drop_prev = FALSE;
}
cur = next;
}
return g_string_free (str, FALSE);
}
void
gedit_warning (GtkWindow *parent, const gchar *format, ...)
{
va_list args;
gchar *str;
GtkWidget *dialog;
GtkWindowGroup *wg = NULL;
g_return_if_fail (format != NULL);
if (parent != NULL)
wg = gtk_window_get_group (parent);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
dialog = gtk_message_dialog_new_with_markup (
parent,
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_OK,
"%s", str);
g_free (str);
if (wg != NULL)
gtk_window_group_add_window (wg, GTK_WINDOW (dialog));
gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
g_signal_connect (G_OBJECT (dialog),
"response",
G_CALLBACK (gtk_widget_destroy),
NULL);
gtk_widget_show (dialog);
}
/*
* Doubles underscore to avoid spurious menu accels.
*/
gchar *
gedit_utils_escape_underscores (const gchar* text,
gssize length)
{
GString *str;
const gchar *p;
const gchar *end;
g_return_val_if_fail (text != NULL, NULL);
if (length < 0)
length = strlen (text);
str = g_string_sized_new (length);
p = text;
end = text + length;
while (p != end)
{
const gchar *next;
next = g_utf8_next_char (p);
switch (*p)
{
case '_':
g_string_append (str, "__");
break;
default:
g_string_append_len (str, p, next - p);
break;
}
p = next;
}
return g_string_free (str, FALSE);
}
/* the following functions are taken from eel */
static gchar *
gedit_utils_str_truncate (const gchar *string,
guint truncate_length,
gboolean middle)
{
GString *truncated;
guint length;
guint n_chars;
guint num_left_chars;
guint right_offset;
guint delimiter_length;
const gchar *delimiter = "\342\200\246";
g_return_val_if_fail (string != NULL, NULL);
length = strlen (string);
g_return_val_if_fail (g_utf8_validate (string, length, NULL), NULL);
/* It doesnt make sense to truncate strings to less than
* the size of the delimiter plus 2 characters (one on each
* side)
*/
delimiter_length = g_utf8_strlen (delimiter, -1);
if (truncate_length < (delimiter_length + 2)) {
return g_strdup (string);
}
n_chars = g_utf8_strlen (string, length);
/* Make sure the string is not already small enough. */
if (n_chars <= truncate_length) {
return g_strdup (string);
}
/* Find the 'middle' where the truncation will occur. */
if (middle)
{
num_left_chars = (truncate_length - delimiter_length) / 2;
right_offset = n_chars - truncate_length + num_left_chars + delimiter_length;
truncated = g_string_new_len (string,
g_utf8_offset_to_pointer (string, num_left_chars) - string);
g_string_append (truncated, delimiter);
g_string_append (truncated, g_utf8_offset_to_pointer (string, right_offset));
}
else
{
num_left_chars = truncate_length - delimiter_length;
truncated = g_string_new_len (string,
g_utf8_offset_to_pointer (string, num_left_chars) - string);
g_string_append (truncated, delimiter);
}
return g_string_free (truncated, FALSE);
}
gchar *
gedit_utils_str_middle_truncate (const gchar *string,
guint truncate_length)
{
return gedit_utils_str_truncate (string, truncate_length, TRUE);
}
gchar *
gedit_utils_str_end_truncate (const gchar *string,
guint truncate_length)
{
return gedit_utils_str_truncate (string, truncate_length, FALSE);
}
gchar *
gedit_utils_make_valid_utf8 (const char *name)
{
GString *string;
const char *remainder, *invalid;
int remaining_bytes, valid_bytes;
g_return_val_if_fail (name != NULL, NULL);
string = NULL;
remainder = name;
remaining_bytes = strlen (name);
while (remaining_bytes != 0) {
if (g_utf8_validate (remainder, remaining_bytes, &invalid)) {
break;
}
valid_bytes = invalid - remainder;
if (string == NULL) {
string = g_string_sized_new (remaining_bytes);
}
g_string_append_len (string, remainder, valid_bytes);
/* append U+FFFD REPLACEMENT CHARACTER */
g_string_append (string, "\357\277\275");
remaining_bytes -= valid_bytes + 1;
remainder = invalid + 1;
}
if (string == NULL) {
return g_strdup (name);
}
g_string_append (string, remainder);
g_assert (g_utf8_validate (string->str, -1, NULL));
return g_string_free (string, FALSE);
}
/* Note that this function replace home dir with ~ */
gchar *
gedit_utils_uri_get_dirname (const gchar *uri)
{
gchar *res;
gchar *str;
g_return_val_if_fail (uri != NULL, NULL);
/* CHECK: does it work with uri chaining? - Paolo */
str = g_path_get_dirname (uri);
g_return_val_if_fail (str != NULL, g_strdup ("."));
if ((strlen (str) == 1) && (*str == '.'))
{
g_free (str);
return NULL;
}
res = gedit_utils_replace_home_dir_with_tilde (str);
g_free (str);
return res;
}
/**
* gedit_utils_location_get_dirname_for_display
* @file: the location
*
* Returns a string suitable to be displayed in the UI indicating
* the name of the directory where the file is located.
* For remote files it may also contain the hostname etc.
* For local files it tries to replace the home dir with ~.
*
* Returns: a string to display the dirname
*/
gchar *
gedit_utils_location_get_dirname_for_display (GFile *location)
{
gchar *uri;
gchar *res;
GMount *mount;
g_return_val_if_fail (location != NULL, NULL);
/* we use the parse name, that is either the local path
* or an uri but which is utf8 safe */
uri = g_file_get_parse_name (location);
/* FIXME: this is sync... is it a problem? */
mount = g_file_find_enclosing_mount (location, NULL, NULL);
if (mount != NULL)
{
gchar *mount_name;
gchar *path;
mount_name = g_mount_get_name (mount);
g_object_unref (mount);
/* obtain the "path" patrt of the uri */
if (gedit_utils_decode_uri (uri,
NULL, NULL,
NULL, NULL,
&path))
{
gchar *dirname;
dirname = gedit_utils_uri_get_dirname (path);
res = g_strdup_printf ("%s %s", mount_name, dirname);
g_free (path);
g_free (dirname);
g_free (mount_name);
}
else
{
res = mount_name;
}
}
else
{
/* fallback for local files or uris without mounts */
res = gedit_utils_uri_get_dirname (uri);
}
g_free (uri);
return res;
}
gchar *
gedit_utils_replace_home_dir_with_tilde (const gchar *uri)
{
gchar *tmp;
gchar *home;
g_return_val_if_fail (uri != NULL, NULL);
/* Note that g_get_home_dir returns a const string */
tmp = (gchar *)g_get_home_dir ();
if (tmp == NULL)
return g_strdup (uri);
home = g_filename_to_utf8 (tmp, -1, NULL, NULL, NULL);
if (home == NULL)
return g_strdup (uri);
if (strcmp (uri, home) == 0)
{
g_free (home);
return g_strdup ("~");
}
tmp = home;
home = g_strdup_printf ("%s/", tmp);
g_free (tmp);
if (g_str_has_prefix (uri, home))
{
gchar *res;
res = g_strdup_printf ("~/%s", uri + strlen (home));
g_free (home);
return res;
}
g_free (home);
return g_strdup (uri);
}
/* the following two functions are courtesy of galeon */
/**
* gedit_utils_get_current_workspace: Get the current workspace
*
* Get the currently visible workspace for the #GdkScreen.
*
* If the X11 window property isn't found, 0 (the first workspace)
* is returned.
*/
guint
gedit_utils_get_current_workspace (GdkScreen *screen)
{
#ifdef GDK_WINDOWING_X11
GdkWindow *root_win;
GdkDisplay *display;
Atom type;
gint format;
gulong nitems;
gulong bytes_after;
guint *current_desktop;
gint err, result;
guint ret = 0;
g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
root_win = gdk_screen_get_root_window (screen);
display = gdk_screen_get_display (screen);
gdk_error_trap_push ();
result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (root_win),
gdk_x11_get_xatom_by_name_for_display (display, "_NET_CURRENT_DESKTOP"),
0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (gpointer) &current_desktop);
err = gdk_error_trap_pop ();
if (err != Success || result != Success)
return ret;
if (type == XA_CARDINAL && format == 32 && nitems > 0)
ret = current_desktop[0];
XFree (current_desktop);
return ret;
#else
/* FIXME: on mac etc proably there are native APIs
* to get the current workspace etc */
return 0;
#endif
}
/**
* gedit_utils_get_window_workspace: Get the workspace the window is on
*
* This function gets the workspace that the #GtkWindow is visible on,
* it returns GEDIT_ALL_WORKSPACES if the window is sticky, or if
* the window manager doesn support this function
*/
guint
gedit_utils_get_window_workspace (GtkWindow *gtkwindow)
{
#ifdef GDK_WINDOWING_X11
GdkWindow *window;
GdkDisplay *display;
Atom type;
gint format;
gulong nitems;
gulong bytes_after;
guint *workspace;
gint err, result;
guint ret = GEDIT_ALL_WORKSPACES;
g_return_val_if_fail (GTK_IS_WINDOW (gtkwindow), 0);
g_return_val_if_fail (GTK_WIDGET_REALIZED (GTK_WIDGET (gtkwindow)), 0);
window = gtk_widget_get_window (GTK_WIDGET (gtkwindow));
display = gdk_drawable_get_display (window);
gdk_error_trap_push ();
result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window),
gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_DESKTOP"),
0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (gpointer) &workspace);
err = gdk_error_trap_pop ();
if (err != Success || result != Success)
return ret;
if (type == XA_CARDINAL && format == 32 && nitems > 0)
ret = workspace[0];
XFree (workspace);
return ret;
#else
/* FIXME: on mac etc proably there are native APIs
* to get the current workspace etc */
return 0;
#endif
}
/**
* gedit_utils_get_current_viewport: Get the current viewport origin
*
* Get the currently visible viewport origin for the #GdkScreen.
*
* If the X11 window property isn't found, (0, 0) is returned.
*/
void
gedit_utils_get_current_viewport (GdkScreen *screen,
gint *x,
gint *y)
{
#ifdef GDK_WINDOWING_X11
GdkWindow *root_win;
GdkDisplay *display;
Atom type;
gint format;
gulong nitems;
gulong bytes_after;
gulong *coordinates;
gint err, result;
g_return_if_fail (GDK_IS_SCREEN (screen));
g_return_if_fail (x != NULL && y != NULL);
/* Default values for the viewport origin */
*x = 0;
*y = 0;
root_win = gdk_screen_get_root_window (screen);
display = gdk_screen_get_display (screen);
gdk_error_trap_push ();
result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (root_win),
gdk_x11_get_xatom_by_name_for_display (display, "_NET_DESKTOP_VIEWPORT"),
0, G_MAXLONG, False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (void*) &coordinates);
err = gdk_error_trap_pop ();
if (err != Success || result != Success)
return;
if (type != XA_CARDINAL || format != 32 || nitems < 2)
{
XFree (coordinates);
return;
}
*x = coordinates[0];
*y = coordinates[1];
XFree (coordinates);
#else
/* FIXME: on mac etc proably there are native APIs
* to get the current workspace etc */
*x = 0;
*y = 0;
#endif
}
void
gedit_utils_activate_url (GtkAboutDialog *about,
const gchar *url,
gpointer data)
{
gtk_show_uri (gtk_widget_get_screen (GTK_WIDGET (about)), url, GDK_CURRENT_TIME, NULL);
}
static gboolean
is_valid_scheme_character (gchar c)
{
return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
}
static gboolean
has_valid_scheme (const gchar *uri)
{
const gchar *p;
p = uri;
if (!is_valid_scheme_character (*p)) {
return FALSE;
}
do {
p++;
} while (is_valid_scheme_character (*p));
return *p == ':';
}
gboolean
gedit_utils_is_valid_uri (const gchar *uri)
{
const guchar *p;
if (uri == NULL)
return FALSE;
if (!has_valid_scheme (uri))
return FALSE;
/* We expect to have a fully valid set of characters */
for (p = (const guchar *)uri; *p; p++) {
if (*p == '%')
{
++p;
if (!g_ascii_isxdigit (*p))
return FALSE;
++p;
if (!g_ascii_isxdigit (*p))
return FALSE;
}
else
{
if (*p <= 32 || *p >= 128)
return FALSE;
}
}
return TRUE;
}
static GtkWidget *
handle_builder_error (const gchar *message, ...)
{
GtkWidget *label;
gchar *msg;
gchar *msg_plain;
va_list args;
va_start (args, message);
msg_plain = g_strdup_vprintf (message, args);
va_end (args);
label = gtk_label_new (NULL);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
msg = g_strconcat ("<span size=\"large\" weight=\"bold\">",
msg_plain, "</span>\n\n",
_("Please check your installation."),
NULL);
gtk_label_set_markup (GTK_LABEL (label), msg);
g_free (msg_plain);
g_free (msg);
gtk_misc_set_padding (GTK_MISC (label), 5, 5);
return label;
}
/**
* gedit_utils_get_ui_objects:
* @filename: the path to the gtk builder file
* @root_objects: a NULL terminated list of root objects to load or NULL to
* load all objects
* @error_widget: a pointer were a #GtkLabel
* @object_name: the name of the first object
* @...: a pointer were the first object is returned, followed by more
* name / object pairs and terminated by NULL.
*
* This function gets the requested objects from a GtkBuilder ui file. In case
* of error it returns FALSE and sets error_widget to a GtkLabel containing
* the error message to display.
*
* Returns FALSE if an error occurs, TRUE on success.
*/
gboolean
gedit_utils_get_ui_objects (const gchar *filename,
gchar **root_objects,
GtkWidget **error_widget,
const gchar *object_name,
...)
{
GtkBuilder *builder;
va_list args;
const gchar *name;
GError *error = NULL;
gchar *filename_markup;
gboolean ret = TRUE;
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error_widget != NULL, FALSE);
g_return_val_if_fail (object_name != NULL, FALSE);
filename_markup = g_markup_printf_escaped ("<i>%s</i>", filename);
*error_widget = NULL;
builder = gtk_builder_new ();
if (root_objects != NULL)
{
gtk_builder_add_objects_from_file (builder,
filename,
root_objects,
&error);
}
else
{
gtk_builder_add_from_file (builder,
filename,
&error);
}
if (error != NULL)
{
*error_widget = handle_builder_error (_("Unable to open UI file %s. Error: %s"),
filename_markup,
error->message);
g_error_free (error);
g_free (filename_markup);
g_object_unref (builder);
return FALSE;
}
va_start (args, object_name);
for (name = object_name; name; name = va_arg (args, const gchar *) )
{
GObject **gobj;
gobj = va_arg (args, GObject **);
*gobj = gtk_builder_get_object (builder, name);
if (!*gobj)
{
*error_widget = handle_builder_error (_("Unable to find the object '%s' inside file %s."),
name,
filename_markup),
ret = FALSE;
break;
}
/* we return a new ref for the root objects,
* the others are already reffed by their parent root object */
if (root_objects != NULL)
{
gint i;
for (i = 0; root_objects[i] != NULL; ++i)
{
if ((strcmp (name, root_objects[i]) == 0))
{
g_object_ref (*gobj);
}
}
}
}
va_end (args);
g_free (filename_markup);
g_object_unref (builder);
return ret;
}
gchar *
gedit_utils_make_canonical_uri_from_shell_arg (const gchar *str)
{
GFile *gfile;
gchar *uri;
g_return_val_if_fail (str != NULL, NULL);
g_return_val_if_fail (*str != '\0', NULL);
/* Note for the future:
* FIXME: is still still relevant?
*
* <federico> paolo: and flame whoever tells
* you that file:///mate/test_files/hëllò
* doesn't work --- that's not a valid URI
*
* <paolo> federico: well, another solution that
* does not requires patch to _from_shell_args
* is to check that the string returned by it
* contains only ASCII chars
* <federico> paolo: hmmmm, isn't there
* mate_vfs_is_uri_valid() or something?
* <paolo>: I will use gedit_utils_is_valid_uri ()
*
*/
gfile = g_file_new_for_commandline_arg (str);
uri = g_file_get_uri (gfile);
g_object_unref (gfile);
if (gedit_utils_is_valid_uri (uri))
return uri;
g_free (uri);
return NULL;
}
/**
* gedit_utils_file_has_parent:
* @gfile: the GFile to check the parent for
*
* Return TRUE if the specified gfile has a parent (is not the root), FALSE
* otherwise
*/
gboolean
gedit_utils_file_has_parent (GFile *gfile)
{
GFile *parent;
gboolean ret;
parent = g_file_get_parent (gfile);
ret = parent != NULL;
if (parent)
g_object_unref (parent);
return ret;
}
/**
* gedit_utils_basename_for_display:
* @uri: uri for which the basename should be displayed
*
* Return the basename of a file suitable for display to users.
*/
gchar *
gedit_utils_basename_for_display (gchar const *uri)
{
gchar *name;
GFile *gfile;
gchar *hn;
g_return_val_if_fail (uri != NULL, NULL);
gfile = g_file_new_for_uri (uri);
/* First, try to query the display name, but only on local files */
if (g_file_has_uri_scheme (gfile, "file"))
{
GFileInfo *info;
info = g_file_query_info (gfile,
G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME,
G_FILE_QUERY_INFO_NONE,
NULL,
NULL);
if (info)
{
/* Simply get the display name to use as the basename */
name = g_strdup (g_file_info_get_display_name (info));
g_object_unref (info);
}
else
{
/* This is a local file, and therefore we will use
* g_filename_display_basename on the local path */
gchar *local_path;
local_path = g_file_get_path (gfile);
name = g_filename_display_basename (local_path);
g_free (local_path);
}
}
else if (gedit_utils_file_has_parent (gfile) || !gedit_utils_decode_uri (uri, NULL, NULL, &hn, NULL, NULL))
{
/* For remote files with a parent (so not just http://foo.com)
or remote file for which the decoding of the host name fails,
use the _parse_name and take basename of that */
gchar *parse_name;
gchar *base;
parse_name = g_file_get_parse_name (gfile);
base = g_filename_display_basename (parse_name);
name = g_uri_unescape_string (base, NULL);
g_free (base);
g_free (parse_name);
}
else
{
/* display '/ on <host>' using the decoded host */
gchar *hn_utf8;
if (hn != NULL)
hn_utf8 = gedit_utils_make_valid_utf8 (hn);
else
/* we should never get here */
hn_utf8 = g_strdup ("?");
/* Translators: '/ on <remote-share>' */
name = g_strdup_printf (_("/ on %s"), hn_utf8);
g_free (hn_utf8);
g_free (hn);
}
g_object_unref (gfile);
return name;
}
/**
* gedit_utils_uri_for_display:
* @uri: uri to be displayed.
*
* Filter, modify, unescape and change @uri to make it appropriate
* for display to users.
*
* This function is a convenient wrapper for g_file_get_parse_name
*
* Return value: a string which represents @uri and can be displayed.
*/
gchar *
gedit_utils_uri_for_display (const gchar *uri)
{
GFile *gfile;
gchar *parse_name;
gfile = g_file_new_for_uri (uri);
parse_name = g_file_get_parse_name (gfile);
g_object_unref (gfile);
return parse_name;
}
/**
* gedit_utils_drop_get_uris:
* @selection_data: the #GtkSelectionData from drag_data_received
* @info: the info from drag_data_received
*
* Create a list of valid uri's from a uri-list drop.
*
* Return value: a string array which will hold the uris or NULL if there
* were no valid uris. g_strfreev should be used when the
* string array is no longer used
*/
gchar **
gedit_utils_drop_get_uris (GtkSelectionData *selection_data)
{
gchar **uris;
gint i;
gint p = 0;
gchar **uri_list;
uris = g_uri_list_extract_uris ((gchar *) gtk_selection_data_get_data (selection_data));
uri_list = g_new0(gchar *, g_strv_length (uris) + 1);
for (i = 0; uris[i] != NULL; i++)
{
gchar *uri;
uri = gedit_utils_make_canonical_uri_from_shell_arg (uris[i]);
/* Silently ignore malformed URI/filename */
if (uri != NULL)
uri_list[p++] = uri;
}
if (*uri_list == NULL)
{
g_free(uri_list);
return NULL;
}
return uri_list;
}
static void
null_ptr (gchar **ptr)
{
if (ptr)
*ptr = NULL;
}
/**
* gedit_utils_decode_uri:
* @uri: the uri to decode
* @scheme: return value pointer for the uri's scheme (e.g. http, sftp, ...)
* @user: return value pointer for the uri user info
* @port: return value pointer for the uri port
* @host: return value pointer for the uri host
* @path: return value pointer for the uri path
*
* Parse and break an uri apart in its individual components like the uri
* scheme, user info, port, host and path. The return value pointer can be
* NULL to ignore certain parts of the uri. If the function returns TRUE, then
* all return value pointers should be freed using g_free
*
* Return value: TRUE if the uri could be properly decoded, FALSE otherwise.
*/
gboolean
gedit_utils_decode_uri (const gchar *uri,
gchar **scheme,
gchar **user,
gchar **host,
gchar **port,
gchar **path
)
{
/* Largely copied from glib/gio/gdummyfile.c:_g_decode_uri. This
* functionality should be in glib/gio, but for now we implement it
* ourselves (see bug #546182) */
const char *p, *in, *hier_part_start, *hier_part_end;
char *out;
char c;
/* From RFC 3986 Decodes:
* URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
*/
p = uri;
null_ptr (scheme);
null_ptr (user);
null_ptr (port);
null_ptr (host);
null_ptr (path);
/* Decode scheme:
* scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
*/
if (!g_ascii_isalpha (*p))
return FALSE;
while (1)
{
c = *p++;
if (c == ':')
break;
if (!(g_ascii_isalnum(c) ||
c == '+' ||
c == '-' ||
c == '.'))
return FALSE;
}
if (scheme)
{
*scheme = g_malloc (p - uri);
out = *scheme;
for (in = uri; in < p - 1; in++)
*out++ = g_ascii_tolower (*in);
*out = '\0';
}
hier_part_start = p;
hier_part_end = p + strlen (p);
if (hier_part_start[0] == '/' && hier_part_start[1] == '/')
{
const char *authority_start, *authority_end;
const char *userinfo_start, *userinfo_end;
const char *host_start, *host_end;
const char *port_start;
authority_start = hier_part_start + 2;
/* authority is always followed by / or nothing */
authority_end = memchr (authority_start, '/', hier_part_end - authority_start);
if (authority_end == NULL)
authority_end = hier_part_end;
/* 3.2:
* authority = [ userinfo "@" ] host [ ":" port ]
*/
userinfo_end = memchr (authority_start, '@', authority_end - authority_start);
if (userinfo_end)
{
userinfo_start = authority_start;
if (user)
*user = g_uri_unescape_segment (userinfo_start, userinfo_end, NULL);
if (user && *user == NULL)
{
if (scheme)
g_free (*scheme);
return FALSE;
}
host_start = userinfo_end + 1;
}
else
host_start = authority_start;
port_start = memchr (host_start, ':', authority_end - host_start);
if (port_start)
{
host_end = port_start++;
if (port)
*port = g_strndup (port_start, authority_end - port_start);
}
else
host_end = authority_end;
if (host)
*host = g_strndup (host_start, host_end - host_start);
hier_part_start = authority_end;
}
if (path)
*path = g_uri_unescape_segment (hier_part_start, hier_part_end, "/");
return TRUE;
}
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