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gimp/app/fileops.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995, 1996, 1997 Spencer Kimball and Peter Mattis
* Copyright (C) 1997 Josh MacDonald
*
* 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.
*/
#include "config.h"
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <glib.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#ifdef G_OS_WIN32
#include <direct.h> /* For _mkdir() */
#define mkdir(path,mode) _mkdir(path)
#include <io.h>
#ifndef S_IWUSR
#define S_IWUSR _S_IWRITE
#endif
#ifndef S_IRUSR
#define S_IRUSR _S_IREAD
#endif
#ifndef S_IWGRP
#define S_IWGRP (_S_IWRITE>>3)
#define S_IWOTH (_S_IWRITE>>6)
#endif
#ifndef S_IRGRP
#define S_IRGRP (_S_IREAD>>3)
#define S_IROTH (_S_IREAD>>6)
#endif
#define uid_t gint
#define gid_t gint
#define geteuid() 0
#define getegid() 0
#endif
#include "appenv.h"
#include "cursorutil.h"
#include "dialog_handler.h"
#include "gdisplay.h"
#include "gimage.h"
#include "gimpcontext.h"
#include "gimpui.h"
#include "fileops.h"
#include "fileopsP.h"
#include "menus.h"
#include "layer.h"
#include "channel.h"
#include "plug_in.h"
#include "procedural_db.h"
#include "gimprc.h"
#include "docindex.h"
#include "undo.h"
#include "libgimp/gimpmath.h"
#include "libgimp/gimpintl.h"
typedef struct _OverwriteData OverwriteData;
struct _OverwriteData
{
gchar *full_filename;
gchar *raw_filename;
};
static void file_overwrite (gchar *filename,
gchar *raw_filename);
static void file_overwrite_callback (GtkWidget *widget,
gboolean overwrite,
gpointer data);
static GimpImage * file_open_image (gchar *filename,
gchar *raw_filename,
gchar *open_mode,
RunModeType run_mode,
gint *status);
static gint file_save (GimpImage *gimage,
gchar *filename,
gchar *raw_filename,
RunModeType run_mode);
static void file_open_genbutton_callback (GtkWidget *widget,
gpointer data);
static void file_open_clistrow_callback (GtkWidget *widget,
gint row);
static void file_open_ok_callback (GtkWidget *widget,
gpointer data);
static void file_save_ok_callback (GtkWidget *widget,
gpointer data);
static void file_dialog_show (GtkWidget *filesel);
static gint file_dialog_hide (GtkWidget *filesel);
static void file_update_name (PlugInProcDef *proc,
GtkWidget *filesel);
static void file_open_type_callback (GtkWidget *widget,
gpointer data);
static void file_save_type_callback (GtkWidget *widget,
gpointer data);
static void file_convert_string (gchar *instr,
gchar *outmem,
gint maxmem,
gint *nmem);
static gchar * file_absolute_filename (gchar *name);
static gint file_check_single_magic (gchar *offset,
gchar *type,
gchar *value,
gint headsize,
guchar *file_head,
FILE *ifp);
static gint file_check_magic_list (GSList *magics_list,
gint headsize,
guchar *head,
FILE *ifp);
static void file_update_menus (GSList *procs,
gint image_type);
static GtkWidget *fileload = NULL;
static GtkWidget *filesave = NULL;
static GtkWidget *open_options = NULL;
static GtkWidget *save_options = NULL;
/* widgets for the open_options menu */
static GtkPreview *open_options_preview = NULL;
static GtkWidget *open_options_fixed = NULL;
static GtkWidget *open_options_label = NULL;
static GtkWidget *open_options_frame = NULL;
static GtkWidget *open_options_genbuttonlabel = NULL;
/* Some state for the thumbnailer */
static gchar *preview_fullname = NULL;
GSList *load_procs = NULL;
GSList *save_procs = NULL;
static PlugInProcDef *load_file_proc = NULL;
static PlugInProcDef *save_file_proc = NULL;
static GimpImage *the_gimage = NULL;
extern GSList *display_list; /* from gdisplay.c */
void
file_ops_pre_init (void)
{
}
void
file_ops_post_init (void)
{
GimpItemFactoryEntry entry;
PlugInProcDef *file_proc;
GSList *tmp;
load_procs = g_slist_reverse (load_procs);
save_procs = g_slist_reverse (save_procs);
for (tmp = load_procs; tmp; tmp = g_slist_next (tmp))
{
gchar *help_page;
file_proc = tmp->data;
help_page = g_strconcat ("filters/",
g_basename (file_proc->prog),
".html",
NULL);
g_strdown (help_page);
entry.entry.path = file_proc->menu_path;
entry.entry.accelerator = NULL;
entry.entry.callback = file_open_type_callback;
entry.entry.callback_action = 0;
entry.entry.item_type = NULL;
entry.help_page = help_page;
entry.description = NULL;
menus_create_item_from_full_path (&entry, NULL, file_proc);
}
for (tmp = save_procs; tmp; tmp = g_slist_next (tmp))
{
gchar *help_page;
file_proc = tmp->data;
help_page = g_strconcat ("filters/",
g_basename (file_proc->prog),
".html",
NULL);
g_strdown (help_page);
entry.entry.path = file_proc->menu_path;
entry.entry.accelerator = NULL;
entry.entry.callback = file_save_type_callback;
entry.entry.callback_action = 0;
entry.entry.item_type = NULL;
entry.help_page = help_page;
entry.description = NULL;
menus_create_item_from_full_path (&entry, NULL, file_proc);
}
}
void
file_open_callback (GtkWidget *widget,
gpointer data)
{
if (!fileload)
{
fileload = gtk_file_selection_new (_("Load Image"));
gtk_window_set_position (GTK_WINDOW (fileload), GTK_WIN_POS_MOUSE);
gtk_window_set_wmclass (GTK_WINDOW (fileload), "load_image", "Gimp");
gtk_container_set_border_width (GTK_CONTAINER (fileload), 2);
gtk_container_set_border_width
(GTK_CONTAINER (GTK_FILE_SELECTION (fileload)->button_area), 2);
dialog_register_fileload (fileload);
gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION (fileload)->cancel_button),
"clicked",
GTK_SIGNAL_FUNC (file_dialog_hide),
GTK_OBJECT (fileload));
gtk_signal_connect (GTK_OBJECT (fileload), "delete_event",
GTK_SIGNAL_FUNC (file_dialog_hide),
NULL);
gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (fileload)->ok_button),
"clicked",
GTK_SIGNAL_FUNC (file_open_ok_callback),
fileload);
gtk_quit_add_destroy (1, GTK_OBJECT (fileload));
gtk_clist_set_selection_mode (GTK_CLIST
(GTK_FILE_SELECTION (fileload)->file_list),
GTK_SELECTION_EXTENDED);
/* Catch file-clist clicks so we can update the preview thumbnail */
gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (fileload)->file_list),
"select_row",
GTK_SIGNAL_FUNC (file_open_clistrow_callback),
fileload);
/* Connect the "F1" help key */
gimp_help_connect_help_accel (fileload,
gimp_standard_help_func,
"open/dialogs/file_open.html");
}
else
{
gtk_widget_set_sensitive (GTK_WIDGET (fileload), TRUE);
if (GTK_WIDGET_VISIBLE (fileload))
return;
gtk_file_selection_set_filename (GTK_FILE_SELECTION(fileload),
"." G_DIR_SEPARATOR_S);
gtk_window_set_title (GTK_WINDOW (fileload), _("Load Image"));
}
if (!open_options)
{
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *option_menu;
GtkWidget *load_menu;
GtkWidget *open_options_genbutton;
open_options = gtk_hbox_new (TRUE, 1);
/* format-chooser frame */
frame = gtk_frame_new (_("Determine File Type"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (open_options), frame, TRUE, TRUE, 4);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
option_menu = gtk_option_menu_new ();
gtk_box_pack_start (GTK_BOX (hbox), option_menu, FALSE, FALSE, 0);
gtk_widget_show (option_menu);
menus_get_load_menu (&load_menu, NULL);
gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), load_menu);
gtk_widget_show (vbox);
gtk_widget_show (frame);
/* Preview frame */
open_options_frame = frame = gtk_frame_new ("");
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_end (GTK_BOX (open_options), frame, FALSE, TRUE, 4);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
hbox = gtk_hbox_new (TRUE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
open_options_genbutton = gtk_button_new ();
gtk_signal_connect (GTK_OBJECT (open_options_genbutton), "clicked",
GTK_SIGNAL_FUNC (file_open_genbutton_callback),
fileload);
gtk_box_pack_start (GTK_BOX (hbox), open_options_genbutton,
TRUE, FALSE, 0);
gtk_widget_show (open_options_genbutton);
open_options_fixed = gtk_fixed_new ();
gtk_widget_set_usize (open_options_fixed, 80, 60);
gtk_container_add (GTK_CONTAINER (GTK_BIN (open_options_genbutton)),
open_options_fixed);
gtk_widget_show (open_options_fixed);
{
GtkWidget* abox;
GtkWidget* sbox;
GtkWidget* align;
sbox = gtk_vbox_new (TRUE, 0);
gtk_container_add (GTK_CONTAINER (open_options_fixed), sbox);
gtk_widget_show (sbox);
align = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_widget_set_usize (align, 80, 60);
gtk_box_pack_start (GTK_BOX (sbox), align, FALSE, TRUE, 0);
gtk_widget_show (align);
abox = gtk_hbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (align), abox);
gtk_widget_show (abox);
open_options_preview =
GTK_PREVIEW (gtk_preview_new (GTK_PREVIEW_COLOR));
gtk_box_pack_start (GTK_BOX (abox), GTK_WIDGET (open_options_preview),
FALSE, TRUE, 0);
gtk_widget_show (GTK_WIDGET (open_options_preview));
open_options_genbuttonlabel = gtk_label_new (_("Generate\nPreview"));
gtk_box_pack_start (GTK_BOX (abox), open_options_genbuttonlabel,
FALSE, TRUE, 0);
gtk_widget_show (open_options_genbuttonlabel);
}
open_options_label = gtk_label_new ("");
gtk_box_pack_start (GTK_BOX (vbox), open_options_label, FALSE, FALSE, 0);
gtk_widget_show (open_options_label);
gtk_widget_show (vbox);
gtk_widget_show (frame);
/* pack the containing open_options hbox into the open-dialog */
gtk_box_pack_end (GTK_BOX (GTK_FILE_SELECTION (fileload)->main_vbox),
open_options, FALSE, FALSE, 0);
}
gtk_frame_set_label (GTK_FRAME (open_options_frame), _("Preview"));
gtk_label_set_text (GTK_LABEL (open_options_label), _("No Selection."));
gtk_widget_show (GTK_WIDGET (open_options_genbuttonlabel));
gtk_widget_hide (GTK_WIDGET (open_options_preview));
gtk_widget_set_sensitive (GTK_WIDGET (open_options_frame), FALSE);
gtk_widget_show (open_options);
file_dialog_show (fileload);
}
void
file_save_callback (GtkWidget *widget,
gpointer data)
{
GDisplay *gdisplay;
gdisplay = gdisplay_active ();
if (! gdisplay)
return;
if (! gimage_active_drawable (gdisplay->gimage))
return;
/* Only save if the gimage has been modified */
if (!trust_dirty_flag || gdisplay->gimage->dirty != 0)
{
if (gdisplay->gimage->has_filename == FALSE)
{
file_save_as_callback (widget, data);
}
else
{
gchar *filename;
gchar *raw_filename;
gint status;
filename = g_strdup (gimage_filename (gdisplay->gimage));
raw_filename = g_basename (filename);
status = file_save (gdisplay->gimage,
filename,
raw_filename,
RUN_WITH_LAST_VALS);
if (status != PDB_SUCCESS &&
status != PDB_CANCEL)
{
g_message (_("Save failed.\n%s"), filename);
}
g_free (filename);
}
}
}
void
file_save_as_callback (GtkWidget *widget,
gpointer data)
{
GDisplay *gdisplay;
gdisplay = gdisplay_active ();
if (! gdisplay)
return;
if (! gimage_active_drawable (gdisplay->gimage))
return;
the_gimage = gdisplay->gimage;
if (!filesave)
{
filesave = gtk_file_selection_new (_("Save Image"));
gtk_window_set_wmclass (GTK_WINDOW (filesave), "save_image", "Gimp");
gtk_window_set_position (GTK_WINDOW (filesave), GTK_WIN_POS_MOUSE);
gtk_container_set_border_width (GTK_CONTAINER (filesave), 2);
gtk_container_set_border_width
(GTK_CONTAINER (GTK_FILE_SELECTION (filesave)->button_area), 2);
gtk_signal_connect_object (GTK_OBJECT (GTK_FILE_SELECTION (filesave)->cancel_button),
"clicked",
GTK_SIGNAL_FUNC (file_dialog_hide),
GTK_OBJECT (filesave));
gtk_signal_connect (GTK_OBJECT (filesave), "delete_event",
GTK_SIGNAL_FUNC (file_dialog_hide),
NULL);
gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION (filesave)->ok_button),
"clicked",
GTK_SIGNAL_FUNC (file_save_ok_callback),
filesave);
gtk_quit_add_destroy (1, GTK_OBJECT (filesave));
/* Connect the "F1" help key */
gimp_help_connect_help_accel (filesave,
gimp_standard_help_func,
"save/dialogs/file_save.html");
}
else
{
gtk_widget_set_sensitive (GTK_WIDGET (filesave), TRUE);
if (GTK_WIDGET_VISIBLE (filesave))
return;
gtk_window_set_title (GTK_WINDOW (filesave), _("Save Image"));
}
gtk_file_selection_set_filename (GTK_FILE_SELECTION(filesave),
gdisplay->gimage->has_filename
? gimage_filename(gdisplay->gimage)
: "." G_DIR_SEPARATOR_S);
if (!save_options)
{
GtkWidget *frame;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *option_menu;
GtkWidget *save_menu;
save_options = gtk_hbox_new (TRUE, 1);
frame = gtk_frame_new (_("Save Options"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (save_options), frame, TRUE, TRUE, 4);
hbox = gtk_hbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
label = gtk_label_new (_("Determine File Type:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
option_menu = gtk_option_menu_new ();
gtk_box_pack_start (GTK_BOX (hbox), option_menu, TRUE, TRUE, 0);
gtk_widget_show (option_menu);
menus_get_save_menu (&save_menu, NULL);
gtk_option_menu_set_menu (GTK_OPTION_MENU (option_menu), save_menu);
gtk_widget_show (frame);
/* pack the containing save_options hbox into the save-dialog */
gtk_box_pack_end (GTK_BOX (GTK_FILE_SELECTION (filesave)->main_vbox),
save_options, FALSE, FALSE, 0);
}
switch (drawable_type (gimage_active_drawable (gdisplay->gimage)))
{
case RGB_GIMAGE:
file_update_menus (save_procs, PLUG_IN_RGB_IMAGE);
break;
case RGBA_GIMAGE:
file_update_menus (save_procs, PLUG_IN_RGBA_IMAGE);
break;
case GRAY_GIMAGE:
file_update_menus (save_procs, PLUG_IN_GRAY_IMAGE);
break;
case GRAYA_GIMAGE:
file_update_menus (save_procs, PLUG_IN_GRAYA_IMAGE);
break;
case INDEXED_GIMAGE:
file_update_menus (save_procs, PLUG_IN_INDEXED_IMAGE);
break;
case INDEXEDA_GIMAGE:
file_update_menus (save_procs, PLUG_IN_INDEXEDA_IMAGE);
break;
}
gtk_widget_show (save_options);
file_dialog_show (filesave);
}
void
file_revert_callback (GtkWidget *widget,
gpointer data)
{
GDisplay *gdisplay;
GimpImage *gimage;
gchar *filename = NULL;
gint status;
gdisplay = gdisplay_active ();
if (!gdisplay || !gdisplay->gimage)
return;
if (gdisplay->gimage->has_filename == FALSE)
{
g_message (_("Revert failed.\n"
"No filename associated with this image."));
}
else
{
filename = gimage_filename (gdisplay->gimage);
gimage = file_open_image (filename, filename, _("Revert"),
RUN_INTERACTIVE, &status);
if (gimage != NULL)
{
undo_free (gimage);
gdisplays_reconnect (gdisplay->gimage, gimage);
gimp_image_clean_all (gimage);
}
else if (status != PDB_CANCEL)
{
g_message (_("Revert failed.\n%s"), filename);
}
}
}
void
file_open_by_extension_callback (GtkWidget *widget,
gpointer data)
{
load_file_proc = NULL;
}
void
file_save_by_extension_callback (GtkWidget *widget,
gpointer data)
{
save_file_proc = NULL;
}
static void
file_update_name (PlugInProcDef *proc,
GtkWidget *filesel)
{
if (proc->extensions_list)
{
gchar *text;
gchar *last_dot;
GString *s;
text = gtk_entry_get_text (GTK_ENTRY (GTK_FILE_SELECTION (filesel)->selection_entry));
last_dot = strrchr (text, '.');
if (last_dot == text || !text[0])
return;
s = g_string_new (text);
if (last_dot)
g_string_truncate (s, last_dot-text);
g_string_append (s, ".");
g_string_append (s, (gchar *) proc->extensions_list->data);
gtk_entry_set_text (GTK_ENTRY (GTK_FILE_SELECTION (filesel)->selection_entry), s->str);
g_string_free (s, TRUE);
}
}
static void
file_open_type_callback (GtkWidget *widget,
gpointer data)
{
PlugInProcDef *proc = (PlugInProcDef *) data;
file_update_name (proc, fileload);
load_file_proc = proc;
}
static void
file_save_type_callback (GtkWidget *widget,
gpointer data)
{
PlugInProcDef *proc = (PlugInProcDef *) data;
file_update_name (proc, filesave);
save_file_proc = proc;
}
static GimpImage *
file_open_image (gchar *filename,
gchar *raw_filename,
gchar *open_mode,
RunModeType run_mode,
gint *status)
{
PlugInProcDef *file_proc;
ProcRecord *proc;
Argument *args;
Argument *return_vals;
gint gimage_id;
gint i;
struct stat statbuf;
*status = PDB_CANCEL; /* inhibits error messages by caller */
file_proc = load_file_proc;
if (!file_proc)
file_proc = file_proc_find (load_procs, filename);
if (!file_proc)
{
/* no errors when making thumbnails */
if (run_mode == RUN_INTERACTIVE)
g_message (_("%s failed.\n"
"%s: Unknown file type."),
open_mode, filename);
return NULL;
}
/* check if we are opening a file */
if (stat (filename, &statbuf) == 0)
{
uid_t euid;
gid_t egid;
if (! (statbuf.st_mode & S_IFREG))
{
/* no errors when making thumbnails */
if (run_mode == RUN_INTERACTIVE)
g_message (_("%s failed.\n"
"%s is not a regular file."),
open_mode, filename);
return NULL;
}
euid = geteuid ();
egid = getegid ();
if (! ((statbuf.st_mode & S_IRUSR) ||
((statbuf.st_mode & S_IRGRP) &&
(statbuf.st_uid != euid)) ||
((statbuf.st_mode & S_IROTH) &&
(statbuf.st_uid != euid) &&
(statbuf.st_gid != egid))))
{
/* no errors when making thumbnails */
if (run_mode == RUN_INTERACTIVE)
g_message (_("%s failed.\n"
"%s: Permission denied."),
open_mode, filename);
return NULL;
}
}
proc = &file_proc->db_info;
args = g_new0 (Argument, proc->num_args);
for (i = 0; i < proc->num_args; i++)
args[i].arg_type = proc->args[i].arg_type;
args[0].value.pdb_int = run_mode;
args[1].value.pdb_pointer = filename;
args[2].value.pdb_pointer = raw_filename;
return_vals = procedural_db_execute (proc->name, args);
*status = return_vals[0].value.pdb_int;
gimage_id = return_vals[1].value.pdb_int;
procedural_db_destroy_args (return_vals, proc->num_values);
g_free (args);
if (*status == PDB_SUCCESS && gimage_id != -1)
{
layer_invalidate_previews (gimage_get_ID (gimage_id));
channel_invalidate_previews (gimage_get_ID (gimage_id));
return pdb_id_to_image (gimage_id);
}
return NULL;
}
gint
file_open (gchar *filename,
gchar *raw_filename)
{
GimpImage *gimage;
GDisplay *gdisplay;
gchar *absolute;
gint status;
if ((gimage = file_open_image (filename,
raw_filename,
_("Open"),
RUN_INTERACTIVE,
&status)) != NULL)
{
/* enable & clear all undo steps */
gimage_enable_undo (gimage);
/* set the image to clean */
gimage_clean_all (gimage);
/* display the image */
gdisplay = gdisplay_new (gimage, 0x0101);
/* always activate the first display */
if (g_slist_length (display_list) == 1)
gimp_context_set_display (gimp_context_get_user (), gdisplay);
absolute = file_absolute_filename (filename);
document_index_add (absolute);
menus_last_opened_add (absolute);
g_free (absolute);
}
return status;
}
TempBuf *
make_thumb_tempbuf (GimpImage *gimage)
{
gint w, h;
if (gimage->width<=80 && gimage->height<=60)
{
w = gimage->width;
h = gimage->height;
}
else
{
/* Ratio molesting to fit within .xvpic thumbnail size limits */
if (60 * gimage->width < 80 * gimage->height)
{
h = 60;
w = (60 * gimage->width) / gimage->height;
if (w == 0)
w = 1;
}
else
{
w = 80;
h = (80 * gimage->height) / gimage->width;
if (h == 0)
h = 1;
}
}
/*printf("tn: %d x %d -> ", w, h);fflush(stdout);*/
return (gimp_image_composite_preview (gimage, GRAY_CHANNEL, w, h));
}
static guchar *
make_RGBbuf_from_tempbuf (TempBuf *tempbuf,
gint *width_rtn,
gint *height_rtn)
{
gint i, j, w, h;
guchar *tbd;
guchar *ptr;
guchar *rtn = NULL;
guchar alpha, r, g, b;
w = (*width_rtn) = tempbuf->width;
h = (*height_rtn) = tempbuf->height;
tbd = temp_buf_data (tempbuf);
switch (tempbuf->bytes)
{
case 4:
rtn = ptr = g_malloc (3 * w * h);
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
r = *(tbd++);
g = *(tbd++);
b = *(tbd++);
alpha = *(tbd++);
if (alpha & 128)
{
*(ptr++) = r;
*(ptr++) = g;
*(ptr++) = b;
}
else
{
r = (( (i^j) & 4 ) << 5) | 64;
*(ptr++) = r;
*(ptr++) = r;
*(ptr++) = r;
}
}
}
break;
case 2:
rtn = ptr = g_malloc (3 * w * h);
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
r = *(tbd++);
alpha = *(tbd++);
if (!(alpha & 128))
r = (( (i^j) & 4 ) << 5) | 64;
*(ptr++) = r;
*(ptr++) = r;
*(ptr++) = r;
}
}
break;
default:
g_warning("UNKNOWN TempBuf width in make_RGBbuf_from_tempbuf()");
}
return (rtn);
}
gboolean
file_save_thumbnail (GimpImage *gimage,
const char *full_source_filename,
TempBuf *tempbuf)
{
gint i,j;
gint w,h;
guchar *tbd;
gchar* pathname;
gchar* filename;
gchar* xvpathname;
gchar* thumbnailname;
GimpImageBaseType basetype;
FILE *fp;
struct stat statbuf;
if (stat (full_source_filename, &statbuf) != 0)
{
return FALSE;
}
/* just for debugging
* if (gimp_image_preview_valid (gimage, GRAY_CHANNEL))
* {
* g_print ("(incidentally, gimage already has a valid preview - %dx%d)\n",
* gimage->comp_preview->width,
* gimage->comp_preview->height);
* }
*/
pathname = g_dirname (full_source_filename);
filename = g_basename (full_source_filename); /* Don't free! */
xvpathname = g_strconcat (pathname, G_DIR_SEPARATOR_S, ".xvpics",
NULL);
thumbnailname = g_strconcat (xvpathname, G_DIR_SEPARATOR_S,
filename,
NULL);
tbd = temp_buf_data (tempbuf);
w = tempbuf->width;
h = tempbuf->height;
/*printf("tn: %d x %d\n", w, h);fflush(stdout);*/
mkdir (xvpathname, 0755);
fp = fopen (thumbnailname, "wb");
g_free (pathname);
g_free (xvpathname);
g_free (thumbnailname);
if (fp)
{
basetype = gimp_image_base_type(gimage);
fprintf (fp,
"P7 332\n#IMGINFO:%dx%d %s (%d %s)\n"
"#END_OF_COMMENTS\n%d %d 255\n",
gimage->width, gimage->height,
(basetype == RGB) ? "RGB" :
(basetype == GRAY) ? "Greyscale" :
(basetype == INDEXED) ? "Indexed" :
"(UNKNOWN COLOUR TYPE)",
(int)statbuf.st_size,
(statbuf.st_size == 1) ? "byte" : "bytes",
w, h);
switch (basetype)
{
case INDEXED:
case RGB:
for (i=0; i<h; i++)
{
/* Do a cheap unidirectional error-spread to look better */
gint rerr=0, gerr=0, berr=0, a;
for (j=0; j<w; j++)
{
gint32 r,g,b;
if (128 & *(tbd + 3))
{
r = *(tbd++) + rerr;
g = *(tbd++) + gerr;
b = *(tbd++) + berr;
tbd++;
}
else
{
a = (( (i^j) & 4 ) << 5) | 64; /* cute. */
r = a + rerr;
g = a + gerr;
b = a + berr;
tbd += 4;
}
r = CLAMP0255 (r);
g = CLAMP0255 (g);
b = CLAMP0255 (b);
fputc(((r>>5)<<5) | ((g>>5)<<2) | (b>>6), fp);
rerr = r - ( (r>>5) * 255 ) / 7;
gerr = g - ( (g>>5) * 255 ) / 7;
berr = b - ( (b>>6) * 255 ) / 3;
}
}
break;
case GRAY:
for (i=0; i<h; i++)
{
/* Do a cheap unidirectional error-spread to look better */
gint b3err=0, b2err=0, v, a;
for (j=0; j<w; j++)
{
gint32 b3, b2;
v = *(tbd++);
a = *(tbd++);
if (!(128 & a))
v = (( (i^j) & 4 ) << 5) | 64;
b2 = v + b2err;
b3 = v + b3err;
b2 = CLAMP0255 (b2);
b3 = CLAMP0255 (b3);
fputc(((b3>>5)<<5) | ((b3>>5)<<2) | (b2>>6), fp);
b2err = b2 - ( (b2>>6) * 255 ) / 3;
b3err = b3 - ( (b3>>5) * 255 ) / 7;
}
}
break;
default:
g_warning("UNKNOWN GIMAGE TYPE IN THUMBNAIL SAVE");
}
fclose(fp);
}
else /* Error writing thumbnail */
{
return FALSE;
}
return TRUE;
}
static gint
file_save (GimpImage *gimage,
gchar *filename,
gchar *raw_filename,
RunModeType run_mode)
{
PlugInProcDef *file_proc;
ProcRecord *proc;
Argument *args;
Argument *return_vals;
gint status;
gint i;
struct stat statbuf;
if (gimage_active_drawable (gimage) == NULL)
return FALSE;
file_proc = gimage_get_save_proc (gimage);
if (!file_proc)
file_proc = file_proc_find (save_procs, raw_filename);
if (!file_proc)
{
g_message (_("Save failed.\n"
"%s: Unknown file type."),
filename);
return PDB_CANCEL; /* inhibits error messages by caller */
}
/* check if we are saving to a file */
if (stat (filename, &statbuf) == 0)
{
uid_t euid;
gid_t egid;
if (! (statbuf.st_mode & S_IFREG))
{
g_message (_("Save failed.\n"
"%s is not a regular file."),
filename);
return PDB_CANCEL; /* inhibits error messages by caller */
}
euid = geteuid ();
egid = getegid ();
if (! ((statbuf.st_mode & S_IWUSR) ||
((statbuf.st_mode & S_IWGRP) &&
(statbuf.st_uid != euid)) ||
((statbuf.st_mode & S_IWOTH) &&
(statbuf.st_uid != euid) &&
(statbuf.st_gid != egid))))
{
g_message (_("Save failed.\n"
"%s: Permission denied."),
filename);
return PDB_CANCEL; /* inhibits error messages by caller */
}
}
/* ref the image, so it can't get deleted during save */
gtk_object_ref (GTK_OBJECT (gimage));
proc = &file_proc->db_info;
args = g_new0 (Argument, proc->num_args);
for (i = 0; i < proc->num_args; i++)
args[i].arg_type = proc->args[i].arg_type;
args[0].value.pdb_int = run_mode;
args[1].value.pdb_int = pdb_image_to_id (gimage);
args[2].value.pdb_int = drawable_ID (gimage_active_drawable (gimage));
args[3].value.pdb_pointer = filename;
args[4].value.pdb_pointer = raw_filename;
return_vals = procedural_db_execute (proc->name, args);
status = return_vals[0].value.pdb_int;
if (status == PDB_SUCCESS)
{
/* set this image to clean */
gimage_clean_all (gimage);
/* these calls must come before the call to gimage_set_filename */
document_index_add (filename);
menus_last_opened_add (filename);
/* use the same plug-in for this image next time */
/* DISABLED - gets stuck on first saved format... needs
attention --Adam */
/* gimage_set_save_proc(gimage, file_proc); */
/* Write a thumbnail for the saved image, where appropriate */
switch (thumbnail_mode)
{
case 0:
break;
default:
{
TempBuf *tempbuf;
tempbuf = make_thumb_tempbuf (gimage);
file_save_thumbnail (gimage, filename, tempbuf);
}
}
/* set the image title */
gimp_image_set_filename (gimage, filename);
/* note: 'filename' may have been free'd by above call! */
}
g_free (return_vals);
g_free (args);
gtk_object_unref (GTK_OBJECT (gimage));
return status;
}
/* The readXVThumb function source may be re-used under
the XFree86-style license. <adam@gimp.org> */
guchar *
readXVThumb (const gchar *fnam,
gint *w,
gint *h,
gchar **imginfo /* caller frees if != NULL */)
{
FILE *fp;
const gchar *P7_332 = "P7 332";
gchar P7_buf[7];
gchar linebuf[200];
guchar *buf;
gint twofivefive;
void *ptr;
*w = *h = 0;
*imginfo = NULL;
fp = fopen (fnam, "rb");
if (!fp)
return NULL;
fread (P7_buf, 6, 1, fp);
if (strncmp(P7_buf, P7_332, 6)!=0)
{
g_warning ("Thumbnail doesn't have the 'P7 332' header.");
fclose (fp);
return NULL;
}
/*newline*/
fread (P7_buf, 1, 1, fp);
do
{
ptr = fgets(linebuf, 199, fp);
if ((strncmp(linebuf, "#IMGINFO:", 9) == 0) &&
(linebuf[9] != '\0') &&
(linebuf[9] != '\n'))
{
if (linebuf[strlen(linebuf)-1] == '\n')
linebuf[strlen(linebuf)-1] = '\0';
if (linebuf[9] != '\0')
{
if (*imginfo)
g_free(*imginfo);
*imginfo = g_strdup (&linebuf[9]);
}
}
}
while (ptr && linebuf[0]=='#'); /* keep throwing away comment lines */
if (!ptr)
{
/* g_warning("Thumbnail ended - not an image?"); */
fclose (fp);
return NULL;
}
sscanf(linebuf, "%d %d %d\n", w, h, &twofivefive);
if (twofivefive!=255)
{
g_warning ("Thumbnail is of funky depth.");
fclose (fp);
return NULL;
}
if ((*w)<1 || (*h)<1 || (*w)>80 || (*h)>60)
{
g_warning ("Thumbnail size bad. Corrupted?");
fclose (fp);
return NULL;
}
buf = g_malloc ((*w) * (*h));
fread (buf, (*w) * (*h), 1, fp);
fclose (fp);
return buf;
}
/* don't call with preview_fullname as parameter! will be clobbered! */
static void
set_preview (const gchar *fullfname,
guchar *RGB_source,
gint RGB_w,
gint RGB_h)
{
guchar *thumb_rgb;
guchar *raw_thumb;
gint tnw,tnh, i;
gchar *pname;
gchar *fname;
gchar *tname;
gchar *imginfo = NULL;
struct stat file_stat;
struct stat thumb_stat;
gboolean thumb_may_be_outdated = FALSE;
gboolean show_generate_label = TRUE;
pname = g_dirname (fullfname);
fname = g_basename (fullfname); /* Don't free this! */
tname = g_strconcat (pname, G_DIR_SEPARATOR_S,
".xvpics", G_DIR_SEPARATOR_S,
fname, NULL);
g_free (pname);
/* If the file is newer than its thumbnail, the thumbnail may
* be out of date.
*/
if ((stat (tname, &thumb_stat) == 0) &&
(stat (fullfname, &file_stat ) == 0))
{
if ((thumb_stat.st_mtime) < (file_stat.st_mtime))
{
thumb_may_be_outdated = TRUE;
}
}
raw_thumb = readXVThumb (tname, &tnw, &tnh, &imginfo);
g_free (tname);
gtk_frame_set_label (GTK_FRAME (open_options_frame), fname);
if (preview_fullname)
{
g_free (preview_fullname);
}
preview_fullname = g_strdup (fullfname);
if (RGB_source)
{
gtk_preview_size (open_options_preview, RGB_w, RGB_h);
for (i = 0; i < RGB_h; i++)
{
gtk_preview_draw_row (open_options_preview, &RGB_source[3*i*RGB_w],
0, i,
RGB_w);
}
}
else
{
if (raw_thumb)
{
thumb_rgb = g_malloc (3 * tnw * tnh);
for (i = 0; i < tnw * tnh; i++)
{
thumb_rgb[i*3 ] = ((raw_thumb[i]>>5)*255)/7;
thumb_rgb[i*3+1] = (((raw_thumb[i]>>2)&7)*255)/7;
thumb_rgb[i*3+2] = (((raw_thumb[i])&3)*255)/3;
}
gtk_preview_size (open_options_preview, tnw, tnh);
for (i = 0; i < tnh; i++)
{
gtk_preview_draw_row (open_options_preview, &thumb_rgb[3*i*tnw],
0, i,
tnw);
}
g_free (thumb_rgb);
}
}
if (raw_thumb || RGB_source) /* We can show *some* kind of preview. */
{
if (raw_thumb) /* Managed to commit thumbnail file to disk */
{
gtk_label_set_text (GTK_LABEL (open_options_label),
thumb_may_be_outdated ?
_("(This thumbnail may be out of date)") :
(imginfo ? imginfo : _("(No Information)")));
if (imginfo)
g_free (imginfo);
}
else
{
switch (thumbnail_mode)
{
case 0:
gtk_label_set_text (GTK_LABEL(open_options_label),
_("(Thumbnail saving is disabled)"));
break;
case 1:
gtk_label_set_text (GTK_LABEL(open_options_label),
_("(Could not write thumbnail file)"));
break;
default:
gtk_label_set_text (GTK_LABEL(open_options_label),
_("(Thumbnail file not written)"));
}
}
gtk_widget_show (GTK_WIDGET (open_options_preview));
gtk_widget_queue_draw (GTK_WIDGET(open_options_preview));
show_generate_label = FALSE;
g_free (raw_thumb);
}
else
{
if (imginfo)
g_free (imginfo);
gtk_widget_hide (GTK_WIDGET (open_options_preview));
gtk_label_set_text (GTK_LABEL (open_options_label),
_("No preview available"));
}
if (show_generate_label)
{
gtk_widget_hide (GTK_WIDGET (open_options_preview));
gtk_widget_show (GTK_WIDGET (open_options_genbuttonlabel));
}
else
{
gtk_widget_hide (GTK_WIDGET (open_options_genbuttonlabel));
gtk_widget_show (GTK_WIDGET (open_options_preview));
}
}
static void
file_open_clistrow_callback (GtkWidget *widget,
gint row)
{
gchar *fullfname = NULL;
fullfname = gtk_file_selection_get_filename (GTK_FILE_SELECTION (fileload));
gtk_widget_set_sensitive (GTK_WIDGET (open_options_frame), TRUE);
set_preview (fullfname, NULL, 0, 0);
}
static void
file_open_genbutton_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage_to_be_thumbed;
gchar *filename;
guchar *RGBbuf;
TempBuf *tempbuf;
gint RGBbuf_w;
gint RGBbuf_h;
/* added for multi-file preview generation... */
GtkFileSelection *fs;
gchar *mfilename = NULL;
gchar *filedirname;
struct stat buf;
gint err;
fs = GTK_FILE_SELECTION (data);
if (!preview_fullname)
{
g_warning ("Tried to generate thumbnail for NULL filename.");
return;
}
filename = g_strdup (preview_fullname);
gimp_add_busy_cursors ();
gtk_widget_set_sensitive (GTK_WIDGET (fileload), FALSE);
/* new mult-file preview make: */
{
GList *row = GTK_CLIST (fs->file_list)->row_list;
gint rownum = 0;
gchar *temp;
filedirname = g_dirname (filename);
while (row)
{
if (GTK_CLIST_ROW (row)->state == GTK_STATE_SELECTED)
{
if (gtk_clist_get_cell_type (GTK_CLIST (fs->file_list),
rownum, 0) == GTK_CELL_TEXT)
{
gtk_clist_get_text (GTK_CLIST (fs->file_list),
rownum, 0, &temp);
mfilename = g_strdup (temp);
err = stat (mfilename, &buf);
if (! (err == 0 && (buf.st_mode & S_IFDIR)))
{
/* Is not directory. */
gint dummy;
if (err)
{
g_free (mfilename);
mfilename = g_strconcat (filedirname,
G_DIR_SEPARATOR_S,
temp, NULL);
}
gimage_to_be_thumbed = file_open_image (mfilename,
temp,
NULL,
RUN_NONINTERACTIVE,
&dummy);
if (gimage_to_be_thumbed)
{
tempbuf = make_thumb_tempbuf (gimage_to_be_thumbed);
RGBbuf = make_RGBbuf_from_tempbuf (tempbuf,
&RGBbuf_w,
&RGBbuf_h);
switch (thumbnail_mode)
{
case 0:
break;
default:
file_save_thumbnail (gimage_to_be_thumbed,
mfilename, tempbuf);
}
set_preview (mfilename, RGBbuf, RGBbuf_w, RGBbuf_h);
gimage_delete (gimage_to_be_thumbed);
if (RGBbuf)
g_free (RGBbuf);
}
else
{
gtk_label_set_text (GTK_LABEL (open_options_label),
_("(could not make preview)"));
}
}
}
}
if (mfilename)
{
g_free (mfilename);
mfilename = NULL;
}
rownum++;
row = g_list_next (row);
}
}
gtk_widget_set_sensitive (GTK_WIDGET (fileload), TRUE);
gimp_remove_busy_cursors (NULL);
if (filedirname)
g_free (filedirname);
g_free (filename);
}
static void
file_open_ok_callback (GtkWidget *widget,
gpointer data)
{
GtkFileSelection *fs;
gchar *filename;
gchar *raw_filename;
gchar *mfilename = NULL;
gchar *filedirname;
struct stat buf;
gint err;
gint status;
fs = GTK_FILE_SELECTION (data);
filename = gtk_file_selection_get_filename (fs);
raw_filename = gtk_entry_get_text (GTK_ENTRY(fs->selection_entry));
g_assert (filename && raw_filename);
if (strlen (raw_filename) == 0)
return;
err = stat (filename, &buf);
if (err == 0 && (buf.st_mode & S_IFDIR))
{
GString *s = g_string_new (filename);
if (s->str[s->len - 1] != G_DIR_SEPARATOR)
{
g_string_append_c (s, G_DIR_SEPARATOR);
}
gtk_file_selection_set_filename (fs, s->str);
g_string_free (s, TRUE);
return;
}
gtk_widget_set_sensitive (GTK_WIDGET (fs), FALSE);
if (err)
filename = raw_filename;
status = file_open (filename, raw_filename);
if (status == PDB_SUCCESS)
{
file_dialog_hide (data);
}
else if (status != PDB_CANCEL)
{
g_message (_("Open failed.\n%s"), filename);
}
gtk_widget_set_sensitive (GTK_WIDGET (fs), TRUE);
/*
* Now deal with multiple selections from the filesel clist
*/
/*
* FIXME: cope with cwd != fileselcwd != dirname(filename)
*/
/*
{
HistoryCallbackArg *callback_arg;
GList *row = fs->history_list;
while (row)
{
callback_arg = row->data;
printf ("(%s)\n", callback_arg->directory );
row = g_list_next (row);
}
}*/
/* filedirname = fs->history_list->data;*/
filedirname = g_dirname (filename);
{
GList *row = GTK_CLIST (fs->file_list)->row_list;
gint rownum = 0;
gchar *temp;
while (row)
{
if (GTK_CLIST_ROW (row)->state == GTK_STATE_SELECTED)
{
if (gtk_clist_get_cell_type (GTK_CLIST (fs->file_list),
rownum, 0) == GTK_CELL_TEXT)
{
gtk_clist_get_text (GTK_CLIST (fs->file_list),
rownum, 0, &temp);
/* When doing multiple selections, the name
* of the first item touched with the cursor will
* become the text-field default - and we don't
* want to load that twice.
*/
if (strcmp (temp, raw_filename) == 0)
{
goto next_iter;
}
mfilename = g_strdup (temp);
err = stat (mfilename, &buf);
if (! (err == 0 && (buf.st_mode & S_IFDIR)))
{
/* Is not directory. */
if (err)
{
g_free (mfilename);
mfilename = g_strconcat (filedirname,
G_DIR_SEPARATOR_S,
temp, NULL);
}
status = file_open (mfilename, temp);
if (status == PDB_SUCCESS)
{
file_dialog_hide (data);
}
else if (status != PDB_CANCEL)
{
g_message (_("Open failed.\n%s"), mfilename);
}
gtk_widget_set_sensitive (GTK_WIDGET (fs), TRUE);
}
}
}
next_iter:
if (mfilename)
{
g_free (mfilename);
mfilename = NULL;
}
rownum++;
row = g_list_next (row);
}
}
if (filedirname)
g_free (filedirname);
}
static void
file_save_ok_callback (GtkWidget *widget,
gpointer data)
{
GtkFileSelection *fs;
gchar *filename;
gchar *raw_filename;
struct stat buf;
gint err;
fs = GTK_FILE_SELECTION (data);
filename = gtk_file_selection_get_filename (fs);
raw_filename = gtk_entry_get_text (GTK_ENTRY(fs->selection_entry));
g_assert (filename && raw_filename);
err = stat (filename, &buf);
if (err == 0)
{
if (buf.st_mode & S_IFDIR)
{
GString *s = g_string_new (filename);
g_string_append_c (s, G_DIR_SEPARATOR);
gtk_file_selection_set_filename (fs, s->str);
g_string_free (s, TRUE);
}
else
{
gtk_widget_set_sensitive (GTK_WIDGET (fs), FALSE);
file_overwrite (g_strdup (filename), g_strdup (raw_filename));
}
}
else
{
gint status;
gtk_widget_set_sensitive (GTK_WIDGET (fs), FALSE);
gimage_set_save_proc (the_gimage, save_file_proc);
status = file_save (the_gimage,
filename,
raw_filename,
RUN_INTERACTIVE);
if (status == PDB_SUCCESS)
{
file_dialog_hide (data);
}
else if (status != PDB_CANCEL)
{
g_message (_("Save failed.\n%s"), filename);
}
gtk_widget_set_sensitive (GTK_WIDGET (fs), TRUE);
}
}
static void
file_dialog_show (GtkWidget *filesel)
{
menus_set_sensitive ("<Toolbox>/File/Open...", FALSE);
menus_set_sensitive ("<Image>/File/Open...", FALSE);
menus_set_sensitive ("<Image>/File/Save", FALSE);
menus_set_sensitive ("<Image>/File/Save As...", FALSE);
gtk_widget_grab_focus (GTK_FILE_SELECTION (filesel)->selection_entry);
gtk_widget_show (filesel);
}
static int
file_dialog_hide (GtkWidget *filesel)
{
gimp_dialog_hide (filesel);
menus_set_sensitive ("<Toolbox>/File/Open...", TRUE);
menus_set_sensitive ("<Image>/File/Open...", TRUE);
if (gdisplay_active ())
{
menus_set_sensitive ("<Image>/File/Save", TRUE);
menus_set_sensitive ("<Image>/File/Save As...", TRUE);
}
return TRUE;
}
static void
file_overwrite (gchar *filename,
gchar *raw_filename)
{
OverwriteData *overwrite_data;
GtkWidget *query_box;
gchar *overwrite_text;
overwrite_data = g_new (OverwriteData, 1);
overwrite_data->full_filename = filename;
overwrite_data->raw_filename = raw_filename;
overwrite_text = g_strdup_printf (_("%s exists, overwrite?"), filename);
query_box = gimp_query_boolean_box (_("File Exists!"),
gimp_standard_help_func,
"save/file_exists.html",
FALSE,
overwrite_text,
_("Yes"), _("No"),
NULL, NULL,
file_overwrite_callback,
overwrite_data);
g_free (overwrite_text);
gtk_widget_show (query_box);
}
static void
file_overwrite_callback (GtkWidget *widget,
gboolean overwrite,
gpointer data)
{
OverwriteData *overwrite_data;
GImage *gimage;
gint status = PDB_EXECUTION_ERROR;
overwrite_data = (OverwriteData *) data;
if (overwrite)
{
if ((gimage = the_gimage) != NULL)
{
status = file_save (the_gimage,
overwrite_data->full_filename,
overwrite_data->raw_filename,
RUN_INTERACTIVE);
if (status == PDB_SUCCESS)
{
the_gimage = NULL;
file_dialog_hide (filesave);
}
}
if (status != PDB_SUCCESS &&
status != PDB_CANCEL)
{
g_message (_("Save failed.\n%s"), overwrite_data->full_filename);
}
}
gtk_widget_set_sensitive (GTK_WIDGET (filesave), TRUE);
g_free (overwrite_data->full_filename);
g_free (overwrite_data->raw_filename);
g_free (overwrite_data);
}
static PlugInProcDef *
file_proc_find_by_name (GSList *procs,
gchar *filename,
gboolean skip_magic)
{
GSList *p;
gchar *ext = strrchr (filename, '.');
if (ext)
ext++;
for (p = procs; p; p = g_slist_next (p))
{
PlugInProcDef *proc = p->data;
GSList *prefixes;
if (skip_magic && proc->magics_list)
continue;
for (prefixes = proc->prefixes_list;
prefixes;
prefixes = g_slist_next (prefixes))
{
if (strncmp (filename, prefixes->data, strlen (prefixes->data)) == 0)
return proc;
}
}
for (p = procs; p; p = g_slist_next (p))
{
PlugInProcDef *proc = p->data;
GSList *extensions;
for (extensions = proc->extensions_list;
ext && extensions;
extensions = g_slist_next (extensions))
{
gchar *p1 = ext;
gchar *p2 = (gchar *) extensions->data;
if (skip_magic && proc->magics_list)
continue;
while (*p1 && *p2)
{
if (tolower (*p1) != tolower (*p2))
break;
p1++;
p2++;
}
if (!(*p1) && !(*p2))
return proc;
}
}
return NULL;
}
PlugInProcDef *
file_proc_find (GSList *procs,
gchar *filename)
{
PlugInProcDef *file_proc;
PlugInProcDef *size_matched_proc;
GSList *all_procs = procs;
FILE *ifp = NULL;
gint head_size = -2;
gint size_match_count = 0;
gint match_val;
guchar head[256];
size_matched_proc = NULL;
/* First, check magicless prefixes/suffixes */
if ( (file_proc = file_proc_find_by_name (all_procs, filename, TRUE)) != NULL)
return file_proc;
/* Then look for magics */
while (procs)
{
file_proc = procs->data;
procs = procs->next;
if (file_proc->magics_list)
{
if (head_size == -2)
{
head_size = 0;
if ((ifp = fopen (filename, "rb")) != NULL)
head_size = fread ((gchar *) head, 1, sizeof (head), ifp);
}
if (head_size >= 4)
{
match_val = file_check_magic_list (file_proc->magics_list,
head_size, head, ifp);
if (match_val == 2) /* size match ? */
{ /* Use it only if no other magic matches */
size_match_count++;
size_matched_proc = file_proc;
}
else if (match_val)
{
fclose (ifp);
return (file_proc);
}
}
}
}
if (ifp) fclose (ifp);
if (size_match_count == 1)
return (size_matched_proc);
/* As a last ditch, try matching by name */
return file_proc_find_by_name (all_procs, filename, FALSE);
}
static void
file_convert_string (gchar *instr,
gchar *outmem,
gint maxmem,
gint *nmem)
{
/* Convert a string in C-notation to array of char */
guchar *uin = (guchar *) instr;
guchar *uout = (guchar *) outmem;
guchar tmp[5], *tmpptr;
gint k;
while ((*uin != '\0') && ((((char *)uout) - outmem) < maxmem))
{
if (*uin != '\\') /* Not an escaped character ? */
{
*(uout++) = *(uin++);
continue;
}
if (*(++uin) == '\0')
{
*(uout++) = '\\';
break;
}
switch (*uin)
{
case '0': case '1': case '2': case '3': /* octal */
for (tmpptr = tmp; (tmpptr-tmp) <= 3;)
{
*(tmpptr++) = *(uin++);
if ( (*uin == '\0') || (!isdigit (*uin))
|| (*uin == '8') || (*uin == '9'))
break;
}
*tmpptr = '\0';
sscanf ((char *)tmp, "%o", &k);
*(uout++) = k;
break;
case 'a': *(uout++) = '\a'; uin++; break;
case 'b': *(uout++) = '\b'; uin++; break;
case 't': *(uout++) = '\t'; uin++; break;
case 'n': *(uout++) = '\n'; uin++; break;
case 'v': *(uout++) = '\v'; uin++; break;
case 'f': *(uout++) = '\f'; uin++; break;
case 'r': *(uout++) = '\r'; uin++; break;
default : *(uout++) = *(uin++); break;
}
}
*nmem = ((gchar *) uout) - outmem;
}
static gchar *
file_absolute_filename (gchar *name)
{
PlugInProcDef *proc;
GSList *procs;
GSList *prefixes;
gchar *absolute;
gchar *current;
g_return_val_if_fail (name != NULL, NULL);
/* check for prefixes like http or ftp */
for (procs = load_procs; procs; procs = g_slist_next (procs))
{
proc = (PlugInProcDef *)procs->data;
for (prefixes = proc->prefixes_list;
prefixes;
prefixes = g_slist_next (prefixes))
{
if (strncmp (name, prefixes->data, strlen (prefixes->data)) == 0)
return g_strdup (name);
}
}
if (g_path_is_absolute (name))
return g_strdup (name);
current = g_get_current_dir ();
absolute = g_strconcat (current, G_DIR_SEPARATOR_S, name, NULL);
g_free (current);
return absolute;
}
static gint
file_check_single_magic (gchar *offset,
gchar *type,
gchar *value,
gint headsize,
guchar *file_head,
FILE *ifp)
{
/* Return values are 0: no match, 1: magic match, 2: size match */
glong offs;
gulong num_testval, num_operatorval;
gulong fileval;
gint numbytes, k, c = 0, found = 0;
gchar *num_operator_ptr, num_operator, num_test;
guchar mem_testval[256];
/* Check offset */
if (sscanf (offset, "%ld", &offs) != 1) return (0);
if (offs < 0) return (0);
/* Check type of test */
num_operator_ptr = NULL;
num_operator = '\0';
num_test = '=';
if (strncmp (type, "byte", 4) == 0)
{
numbytes = 1;
num_operator_ptr = type+4;
}
else if (strncmp (type, "short", 5) == 0)
{
numbytes = 2;
num_operator_ptr = type+5;
}
else if (strncmp (type, "long", 4) == 0)
{
numbytes = 4;
num_operator_ptr = type+4;
}
else if (strncmp (type, "size", 4) == 0)
{
numbytes = 5;
}
else if (strcmp (type, "string") == 0)
{
numbytes = 0;
}
else return (0);
/* Check numerical operator value if present */
if (num_operator_ptr && (*num_operator_ptr == '&'))
{
if (isdigit (num_operator_ptr[1]))
{
if (num_operator_ptr[1] != '0') /* decimal */
sscanf (num_operator_ptr+1, "%ld", &num_operatorval);
else if (num_operator_ptr[2] == 'x') /* hexadecimal */
sscanf (num_operator_ptr+3, "%lx", &num_operatorval);
else /* octal */
sscanf (num_operator_ptr+2, "%lo", &num_operatorval);
num_operator = *num_operator_ptr;
}
}
if (numbytes > 0) /* Numerical test ? */
{
/* Check test value */
if ((value[0] == '=') || (value[0] == '>') || (value[0] == '<'))
{
num_test = value[0];
value++;
}
if (!isdigit (value[0])) return (0);
/*
* to anybody reading this: is strtol's parsing behaviour (e.g. "0x" prefix)
* broken on some systems or why do we do the base detection ourselves?
* */
if (value[0] != '0') /* decimal */
num_testval = strtol(value, NULL, 10);
else if (value[1] == 'x') /* hexadecimal */
num_testval = (unsigned long)strtoul(value+2, NULL, 16);
else /* octal */
num_testval = strtol(value+1, NULL, 8);
fileval = 0;
if (numbytes == 5) /* Check for file size ? */
{
struct stat buf;
if (fstat (fileno (ifp), &buf) < 0) return (0);
fileval = buf.st_size;
}
else if (offs + numbytes <= headsize) /* We have it in memory ? */
{
for (k = 0; k < numbytes; k++)
fileval = (fileval << 8) | (long)file_head[offs+k];
}
else /* Read it from file */
{
if (fseek (ifp, offs, SEEK_SET) < 0) return (0);
for (k = 0; k < numbytes; k++)
fileval = (fileval << 8) | (c = getc (ifp));
if (c == EOF) return (0);
}
if (num_operator == '&')
fileval &= num_operatorval;
if (num_test == '<')
found = (fileval < num_testval);
else if (num_test == '>')
found = (fileval > num_testval);
else
found = (fileval == num_testval);
if (found && (numbytes == 5)) found = 2;
}
else if (numbytes == 0) /* String test */
{
file_convert_string ((char *)value, (char *)mem_testval,
sizeof (mem_testval), &numbytes);
if (numbytes <= 0) return (0);
if (offs + numbytes <= headsize) /* We have it in memory ? */
{
found = (memcmp (mem_testval, file_head+offs, numbytes) == 0);
}
else /* Read it from file */
{
if (fseek (ifp, offs, SEEK_SET) < 0) return (0);
found = 1;
for (k = 0; found && (k < numbytes); k++)
{
c = getc (ifp);
found = (c != EOF) && (c == (int)mem_testval[k]);
}
}
}
return (found);
}
static int
file_check_magic_list (GSList *magics_list,
gint headsize,
guchar *head,
FILE *ifp)
{
/* Return values are 0: no match, 1: magic match, 2: size match */
gchar *offset, *type, *value;
gint and = 0;
gint found = 0, match_val;
while (magics_list)
{
if ((offset = (char *)magics_list->data) == NULL) break;
if ((magics_list = magics_list->next) == NULL) break;
if ((type = (char *)magics_list->data) == NULL) break;
if ((magics_list = magics_list->next) == NULL) break;
if ((value = (char *)magics_list->data) == NULL) break;
magics_list = magics_list->next;
match_val = file_check_single_magic (offset, type, value,
headsize, head, ifp);
if (and)
found = found && match_val;
else
found = match_val;
and = (strchr (offset, '&') != NULL);
if ((!and) && found) return (match_val);
}
return (0);
}
static void
file_update_menus (GSList *procs,
gint image_type)
{
PlugInProcDef *file_proc;
while (procs)
{
file_proc = procs->data;
procs = procs->next;
if (file_proc->db_info.proc_type != PDB_EXTENSION)
menus_set_sensitive (file_proc->menu_path,
(file_proc->image_types_val & image_type));
}
}
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