Pileus Git - ~andy/gtk/blob - gtk/gtkfilesel.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18 #include <stdio.h>
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <sys/param.h>
  22 #include <dirent.h>
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <pwd.h>
  28 #include "fnmatch.h"
  29
  30 #include "gdk/gdkkeysyms.h"
  31 #include "gtkbutton.h"
  32 #include "gtkentry.h"
  33 #include "gtkfilesel.h"
  34 #include "gtkhbox.h"
  35 #include "gtklabel.h"
  36 #include "gtklist.h"
  37 #include "gtklistitem.h"
  38 #include "gtkmain.h"
  39 #include "gtkscrolledwindow.h"
  40 #include "gtksignal.h"
  41 #include "gtkvbox.h"
  42 #include "gtkmenu.h"
  43 #include "gtkmenuitem.h"
  44 #include "gtkoptionmenu.h"
  45 #include "gtkclist.h"
  46 #include "gtkdialog.h"
  47
  48 #define DIR_LIST_WIDTH   180
  49 #define DIR_LIST_HEIGHT  180
  50 #define FILE_LIST_WIDTH  180
  51 #define FILE_LIST_HEIGHT 180
  52
  53 /* I've put this here so it doesn't get confused with the
  54  * file completion interface */
  55 typedef struct _HistoryCallbackArg HistoryCallbackArg;
  56
  57 struct _HistoryCallbackArg
  58 {
  59   gchar *directory;
  60   GtkWidget *menu_item;
  61 };
  62
  63
  64 typedef struct _CompletionState    CompletionState;
  65 typedef struct _CompletionDir      CompletionDir;
  66 typedef struct _CompletionDirSent  CompletionDirSent;
  67 typedef struct _CompletionDirEntry CompletionDirEntry;
  68 typedef struct _CompletionUserDir  CompletionUserDir;
  69 typedef struct _PossibleCompletion PossibleCompletion;
  70
  71 /* Non-external file completion decls and structures */
  72
  73 /* A contant telling PRCS how many directories to cache.  Its actually
  74  * kept in a list, so the geometry isn't important. */
  75 #define CMPL_DIRECTORY_CACHE_SIZE 10
  76
  77 /* A constant used to determine whether a substring was an exact
  78  * match by first_diff_index()
  79  */
  80 #define PATTERN_MATCH -1
  81 /* The arguments used by all fnmatch() calls below
  82  */
  83 #define FNMATCH_FLAGS (FNM_PATHNAME | FNM_PERIOD)
  84
  85 #define CMPL_ERRNO_TOO_LONG ((1<<16)-1)
  86
  87 /* This structure contains all the useful information about a directory
  88  * for the purposes of filename completion.  These structures are cached
  89  * in the CompletionState struct.  CompletionDir's are reference counted.
  90  */
  91 struct _CompletionDirSent
  92 {
  93   ino_t inode;
  94   time_t mtime;
  95
  96   gint entry_count;
  97   gchar *name_buffer; /* memory segment containing names of all entries */
  98
  99   struct _CompletionDirEntry *entries;
 100 };
 101
 102 struct _CompletionDir
 103 {
 104   CompletionDirSent *sent;
 105
 106   gchar *fullname;
 107   gint fullname_len;
 108
 109   struct _CompletionDir *cmpl_parent;
 110   gint cmpl_index;
 111   gchar *cmpl_text;
 112 };
 113
 114 /* This structure contains pairs of directory entry names with a flag saying
 115  * whether or not they are a valid directory.  NOTE: This information is used
 116  * to provide the caller with information about whether to update its completions
 117  * or try to open a file.  Since directories are cached by the directory mtime,
 118  * a symlink which points to an invalid file (which will not be a directory),
 119  * will not be reevaluated if that file is created, unless the containing
 120  * directory is touched.  I consider this case to be worth ignoring (josh).
 121  */
 122 struct _CompletionDirEntry
 123 {
 124   gint is_dir;
 125   gchar *entry_name;
 126 };
 127
 128 struct _CompletionUserDir
 129 {
 130   gchar *login;
 131   gchar *homedir;
 132 };
 133
 134 struct _PossibleCompletion
 135 {
 136   /* accessible fields, all are accessed externally by functions
 137    * declared above
 138    */
 139   gchar *text;
 140   gint is_a_completion;
 141   gint is_directory;
 142
 143   /* Private fields
 144    */
 145   gint text_alloc;
 146 };
 147
 148 struct _CompletionState
 149 {
 150   gint last_valid_char;
 151   gchar *updated_text;
 152   gint updated_text_len;
 153   gint updated_text_alloc;
 154   gint re_complete;
 155
 156   gchar *user_dir_name_buffer;
 157   gint user_directories_len;
 158   gchar *user_home_dir;
 159
 160   gchar *last_completion_text;
 161
 162   gint user_completion_index; /* if >= 0, currently completing ~user */
 163
 164   struct _CompletionDir *completion_dir; /* directory completing from */
 165   struct _CompletionDir *active_completion_dir;
 166
 167   struct _PossibleCompletion the_completion;
 168
 169   struct _CompletionDir *reference_dir; /* initial directory */
 170
 171   GList* directory_storage;
 172   GList* directory_sent_storage;
 173
 174   struct _CompletionUserDir *user_directories;
 175 };
 176
 177
 178 /* File completion functions which would be external, were they used
 179  * outside of this file.
 180  */
 181
 182 static CompletionState*    cmpl_init_state        (void);
 183 static void                cmpl_free_state        (CompletionState *cmpl_state);
 184 static gint                cmpl_state_okay        (CompletionState* cmpl_state);
 185 static gchar*              cmpl_strerror          (gint);
 186
 187 static PossibleCompletion* cmpl_completion_matches(gchar           *text_to_complete,
 188                                                    gchar          **remaining_text,
 189                                                    CompletionState *cmpl_state);
 190
 191 /* Returns a name for consideration, possibly a completion, this name
 192  * will be invalid after the next call to cmpl_next_completion.
 193  */
 194 static char*               cmpl_this_completion   (PossibleCompletion*);
 195
 196 /* True if this completion matches the given text.  Otherwise, this
 197  * output can be used to have a list of non-completions.
 198  */
 199 static gint                cmpl_is_a_completion   (PossibleCompletion*);
 200
 201 /* True if the completion is a directory
 202  */
 203 static gint                cmpl_is_directory      (PossibleCompletion*);
 204
 205 /* Obtains the next completion, or NULL
 206  */
 207 static PossibleCompletion* cmpl_next_completion   (CompletionState*);
 208
 209 /* Updating completions: the return value of cmpl_updated_text() will
 210  * be text_to_complete completed as much as possible after the most
 211  * recent call to cmpl_completion_matches.  For the present
 212  * application, this is the suggested replacement for the user's input
 213  * string.  You must CALL THIS AFTER ALL cmpl_text_completions have
 214  * been received.
 215  */
 216 static gchar*              cmpl_updated_text       (CompletionState* cmpl_state);
 217
 218 /* After updating, to see if the completion was a directory, call
 219  * this.  If it was, you should consider re-calling completion_matches.
 220  */
 221 static gint                cmpl_updated_dir        (CompletionState* cmpl_state);
 222
 223 /* Current location: if using file completion, return the current
 224  * directory, from which file completion begins.  More specifically,
 225  * the cwd concatenated with all exact completions up to the last
 226  * directory delimiter('/').
 227  */
 228 static gchar*              cmpl_reference_position (CompletionState* cmpl_state);
 229
 230 /* backing up: if cmpl_completion_matches returns NULL, you may query
 231  * the index of the last completable character into cmpl_updated_text.
 232  */
 233 static gint                cmpl_last_valid_char    (CompletionState* cmpl_state);
 234
 235 /* When the user selects a non-directory, call cmpl_completion_fullname
 236  * to get the full name of the selected file.
 237  */
 238 static gchar*              cmpl_completion_fullname (gchar*, CompletionState* cmpl_state);
 239
 240
 241 /* Directory operations. */
 242 static CompletionDir* open_ref_dir         (gchar* text_to_complete,
 243                                             gchar** remaining_text,
 244                                             CompletionState* cmpl_state);
 245 static CompletionDir* open_dir             (gchar* dir_name,
 246                                             CompletionState* cmpl_state);
 247 static CompletionDir* open_user_dir        (gchar* text_to_complete,
 248                                             CompletionState *cmpl_state);
 249 static CompletionDir* open_relative_dir    (gchar* dir_name, CompletionDir* dir,
 250                                             CompletionState *cmpl_state);
 251 static CompletionDirSent* open_new_dir         (gchar* dir_name, struct stat* sbuf);
 252 static gint           correct_dir_fullname (CompletionDir* cmpl_dir);
 253 static gint           correct_parent       (CompletionDir* cmpl_dir,
 254                                             struct stat *sbuf);
 255 static gchar*         find_parent_dir_fullname    (gchar* dirname);
 256 static CompletionDir* attach_dir           (CompletionDirSent* sent,
 257                                             gchar* dir_name,
 258                                             CompletionState *cmpl_state);
 259 static void           free_dir_sent (CompletionDirSent* sent);
 260 static void           free_dir      (CompletionDir  *dir);
 261 static void           prune_memory_usage(CompletionState *cmpl_state);
 262
 263 /* Completion operations */
 264 static PossibleCompletion* attempt_homedir_completion(gchar* text_to_complete,
 265                                                       CompletionState *cmpl_state);
 266 static PossibleCompletion* attempt_file_completion(CompletionState *cmpl_state);
 267 static CompletionDir* find_completion_dir(gchar* text_to_complete,
 268                                           gchar** remaining_text,
 269                                           CompletionState* cmpl_state);
 270 static PossibleCompletion* append_completion_text(gchar* text,
 271                                                   CompletionState* cmpl_state);
 272 static gint get_pwdb(CompletionState* cmpl_state);
 273 static gint first_diff_index(gchar* pat, gchar* text);
 274 static gint compare_user_dir(const void* a, const void* b);
 275 static gint compare_cmpl_dir(const void* a, const void* b);
 276 static void update_cmpl(PossibleCompletion* poss,
 277                         CompletionState* cmpl_state);
 278
 279 static void gtk_file_selection_class_init    (GtkFileSelectionClass *klass);
 280 static void gtk_file_selection_init          (GtkFileSelection      *filesel);
 281 static void gtk_file_selection_destroy       (GtkObject             *object);
 282 static gint gtk_file_selection_key_press     (GtkWidget             *widget,
 283                                               GdkEventKey           *event,
 284                                               gpointer               user_data);
 285
 286 static void gtk_file_selection_file_button (GtkWidget *widget,
 287                                             gint row,
 288                                             gint column,
 289                                             GdkEventButton *bevent,
 290                                             gpointer user_data);
 291
 292 static void gtk_file_selection_dir_button (GtkWidget *widget,
 293                                            gint row,
 294                                            gint column,
 295                                            GdkEventButton *bevent,
 296                                            gpointer data);
 297
 298 static void gtk_file_selection_populate      (GtkFileSelection      *fs,
 299                                               gchar                 *rel_path,
 300                                               gint                   try_complete);
 301 static void gtk_file_selection_abort         (GtkFileSelection      *fs);
 302
 303 static void gtk_file_selection_update_history_menu (GtkFileSelection       *fs,
 304                                                     gchar                  *current_dir);
 305
 306 static void gtk_file_selection_create_dir (GtkWidget *widget, gpointer data);
 307 static void gtk_file_selection_delete_file (GtkWidget *widget, gpointer data);
 308 static void gtk_file_selection_rename_file (GtkWidget *widget, gpointer data);
 309
 310
 311
 312 static GtkWindowClass *parent_class = NULL;
 313
 314 /* Saves errno when something cmpl does fails. */
 315 static gint cmpl_errno;
 316
 317 guint
 318 gtk_file_selection_get_type ()
 319 {
 320   static guint file_selection_type = 0;
 321
 322   if (!file_selection_type)
 323     {
 324       GtkTypeInfo filesel_info =
 325       {
 326         "GtkFileSelection",
 327         sizeof (GtkFileSelection),
 328         sizeof (GtkFileSelectionClass),
 329         (GtkClassInitFunc) gtk_file_selection_class_init,
 330         (GtkObjectInitFunc) gtk_file_selection_init,
 331         (GtkArgSetFunc) NULL,
 332         (GtkArgGetFunc) NULL,
 333       };
 334
 335       file_selection_type = gtk_type_unique (gtk_window_get_type (), &filesel_info);
 336     }
 337
 338   return file_selection_type;
 339 }
 340
 341 static void
 342 gtk_file_selection_class_init (GtkFileSelectionClass *class)
 343 {
 344   GtkObjectClass *object_class;
 345
 346   object_class = (GtkObjectClass*) class;
 347
 348   parent_class = gtk_type_class (gtk_window_get_type ());
 349
 350   object_class->destroy = gtk_file_selection_destroy;
 351 }
 352
 353 static void
 354 gtk_file_selection_init (GtkFileSelection *filesel)
 355 {
 356   GtkWidget *entry_vbox;
 357   GtkWidget *label;
 358   GtkWidget *list_hbox;
 359   GtkWidget *confirm_area;
 360   GtkWidget *pulldown_hbox;
 361   char *dir_title [] = { "Directories", };
 362   char *file_title [] = { "Files", };
 363
 364   filesel->cmpl_state = cmpl_init_state ();
 365
 366   /* The dialog-sized vertical box  */
 367   filesel->main_vbox = gtk_vbox_new (FALSE, 10);
 368   gtk_container_border_width (GTK_CONTAINER (filesel), 10);
 369   gtk_container_add (GTK_CONTAINER (filesel), filesel->main_vbox);
 370   gtk_widget_show (filesel->main_vbox);
 371
 372   /* The horizontal box containing create, rename etc. buttons */
 373   filesel->button_area = gtk_hbox_new (TRUE, 0);
 374   gtk_box_pack_start (GTK_BOX (filesel->main_vbox), filesel->button_area,
 375                       FALSE, FALSE, 0);
 376   gtk_widget_show (filesel->button_area);
 377
 378   gtk_file_selection_show_fileop_buttons(filesel);
 379
 380   /* hbox for pulldown menu */
 381   pulldown_hbox = gtk_hbox_new (TRUE, 5);
 382   gtk_box_pack_start (GTK_BOX (filesel->main_vbox), pulldown_hbox, FALSE, FALSE, 0);
 383   gtk_widget_show (pulldown_hbox);
 384
 385   /* Pulldown menu */
 386   filesel->history_pulldown = gtk_option_menu_new ();
 387   gtk_widget_show (filesel->history_pulldown);
 388   gtk_box_pack_start (GTK_BOX (pulldown_hbox), filesel->history_pulldown,
 389                       FALSE, FALSE, 0);
 390
 391   /*  The horizontal box containing the directory and file listboxes  */
 392   list_hbox = gtk_hbox_new (FALSE, 5);
 393   gtk_box_pack_start (GTK_BOX (filesel->main_vbox), list_hbox, TRUE, TRUE, 0);
 394   gtk_widget_show (list_hbox);
 395
 396   /* The directories clist */
 397   filesel->dir_list = gtk_clist_new_with_titles (1, dir_title);
 398   gtk_widget_set_usize (filesel->dir_list, DIR_LIST_WIDTH, DIR_LIST_HEIGHT);
 399   gtk_signal_connect (GTK_OBJECT (filesel->dir_list), "select_row",
 400                       (GtkSignalFunc) gtk_file_selection_dir_button,
 401                       (gpointer) filesel);
 402   gtk_clist_set_policy (GTK_CLIST (filesel->dir_list), GTK_POLICY_ALWAYS, GTK_POLICY_AUTOMATIC);
 403   gtk_clist_column_titles_passive (GTK_CLIST (filesel->dir_list));
 404   gtk_container_border_width (GTK_CONTAINER (filesel->dir_list), 5);
 405   gtk_box_pack_start (GTK_BOX (list_hbox), filesel->dir_list, TRUE, TRUE, 0);
 406   gtk_widget_show (filesel->dir_list);
 407
 408   /* The files clist */
 409   filesel->file_list = gtk_clist_new_with_titles (1, file_title);
 410   gtk_widget_set_usize (filesel->file_list, FILE_LIST_WIDTH, FILE_LIST_HEIGHT);
 411   gtk_signal_connect (GTK_OBJECT (filesel->file_list), "select_row",
 412                       (GtkSignalFunc) gtk_file_selection_file_button,
 413                       (gpointer) filesel);
 414   gtk_clist_set_policy (GTK_CLIST (filesel->file_list), GTK_POLICY_ALWAYS, GTK_POLICY_AUTOMATIC);
 415   gtk_clist_column_titles_passive (GTK_CLIST (filesel->file_list));
 416   gtk_container_border_width (GTK_CONTAINER (filesel->file_list), 5);
 417   gtk_box_pack_start (GTK_BOX (list_hbox), filesel->file_list, TRUE, TRUE, 0);
 418   gtk_widget_show (filesel->file_list);
 419
 420   /* action area for packing buttons into. */
 421   filesel->action_area = gtk_hbox_new (TRUE, 0);
 422   gtk_box_pack_start (GTK_BOX (filesel->main_vbox), filesel->action_area,
 423                       FALSE, FALSE, 0);
 424   gtk_widget_show (filesel->action_area);
 425
 426   /*  The OK/Cancel button area */
 427   confirm_area = gtk_hbox_new (TRUE, 10);
 428   gtk_box_pack_end (GTK_BOX (filesel->main_vbox), confirm_area, FALSE, FALSE, 0);
 429   gtk_widget_show (confirm_area);
 430
 431   /*  The OK button  */
 432   filesel->ok_button = gtk_button_new_with_label ("OK");
 433   GTK_WIDGET_SET_FLAGS (filesel->ok_button, GTK_CAN_DEFAULT);
 434   gtk_box_pack_start (GTK_BOX (confirm_area), filesel->ok_button, TRUE, TRUE, 0);
 435   gtk_widget_grab_default (filesel->ok_button);
 436   gtk_widget_show (filesel->ok_button);
 437
 438   /*  The Cancel button  */
 439   filesel->cancel_button = gtk_button_new_with_label ("Cancel");
 440   GTK_WIDGET_SET_FLAGS (filesel->cancel_button, GTK_CAN_DEFAULT);
 441   gtk_box_pack_start (GTK_BOX (confirm_area), filesel->cancel_button, TRUE, TRUE, 0);
 442   gtk_widget_show (filesel->cancel_button);
 443
 444   /*  The selection entry widget  */
 445   entry_vbox = gtk_vbox_new (FALSE, 2);
 446   gtk_box_pack_end (GTK_BOX (filesel->main_vbox), entry_vbox, FALSE, FALSE, 0);
 447   gtk_widget_show (entry_vbox);
 448
 449   filesel->selection_text = label = gtk_label_new ("");
 450   gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
 451   gtk_box_pack_start (GTK_BOX (entry_vbox), label, FALSE, FALSE, 0);
 452   gtk_widget_show (label);
 453
 454   filesel->selection_entry = gtk_entry_new ();
 455   gtk_signal_connect (GTK_OBJECT (filesel->selection_entry), "key_press_event",
 456                       (GtkSignalFunc) gtk_file_selection_key_press, filesel);
 457   gtk_signal_connect_object (GTK_OBJECT (filesel->selection_entry), "focus_in_event",
 458                              (GtkSignalFunc) gtk_widget_grab_default,
 459                              GTK_OBJECT (filesel->ok_button));
 460   gtk_signal_connect_object (GTK_OBJECT (filesel->selection_entry), "activate",
 461                              (GtkSignalFunc) gtk_button_clicked,
 462                              GTK_OBJECT (filesel->ok_button));
 463   gtk_box_pack_start (GTK_BOX (entry_vbox), filesel->selection_entry, TRUE, TRUE, 0);
 464   gtk_widget_show (filesel->selection_entry);
 465
 466   if (!cmpl_state_okay (filesel->cmpl_state))
 467     {
 468       gchar err_buf[256];
 469
 470       sprintf (err_buf, "Directory unreadable: %s", cmpl_strerror (cmpl_errno));
 471
 472       gtk_label_set (GTK_LABEL (filesel->selection_text), err_buf);
 473     }
 474   else
 475     {
 476       gtk_file_selection_populate (filesel, "", FALSE);
 477     }
 478
 479   gtk_widget_grab_focus (filesel->selection_entry);
 480 }
 481
 482 GtkWidget*
 483 gtk_file_selection_new (const gchar *title)
 484 {
 485   GtkFileSelection *filesel;
 486
 487   filesel = gtk_type_new (gtk_file_selection_get_type ());
 488   gtk_window_set_title (GTK_WINDOW (filesel), title);
 489
 490   return GTK_WIDGET (filesel);
 491 }
 492
 493 void
 494 gtk_file_selection_show_fileop_buttons (GtkFileSelection *filesel)
 495 {
 496   g_return_if_fail (filesel != NULL);
 497   g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
 498
 499   /* delete, create directory, and rename */
 500   if (!filesel->fileop_c_dir)
 501     {
 502       filesel->fileop_c_dir = gtk_button_new_with_label ("Create Dir");
 503       gtk_signal_connect (GTK_OBJECT (filesel->fileop_c_dir), "clicked",
 504                           (GtkSignalFunc) gtk_file_selection_create_dir,
 505                           (gpointer) filesel);
 506       gtk_box_pack_start (GTK_BOX (filesel->button_area),
 507                           filesel->fileop_c_dir, TRUE, TRUE, 0);
 508       gtk_widget_show (filesel->fileop_c_dir);
 509     }
 510
 511   if (!filesel->fileop_del_file)
 512     {
 513       filesel->fileop_del_file = gtk_button_new_with_label ("Delete File");
 514       gtk_signal_connect (GTK_OBJECT (filesel->fileop_del_file), "clicked",
 515                           (GtkSignalFunc) gtk_file_selection_delete_file,
 516                           (gpointer) filesel);
 517       gtk_box_pack_start (GTK_BOX (filesel->button_area),
 518                           filesel->fileop_del_file, TRUE, TRUE, 0);
 519       gtk_widget_show (filesel->fileop_del_file);
 520     }
 521
 522   if (!filesel->fileop_ren_file)
 523     {
 524       filesel->fileop_ren_file = gtk_button_new_with_label ("Rename File");
 525       gtk_signal_connect (GTK_OBJECT (filesel->fileop_ren_file), "clicked",
 526                           (GtkSignalFunc) gtk_file_selection_rename_file,
 527                           (gpointer) filesel);
 528       gtk_box_pack_start (GTK_BOX (filesel->button_area),
 529                           filesel->fileop_ren_file, TRUE, TRUE, 0);
 530       gtk_widget_show (filesel->fileop_ren_file);
 531     }
 532 }
 533
 534 void
 535 gtk_file_selection_hide_fileop_buttons (GtkFileSelection *filesel)
 536 {
 537   g_return_if_fail (filesel != NULL);
 538   g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
 539
 540   if (filesel->fileop_ren_file)
 541     {
 542       gtk_widget_destroy (filesel->fileop_ren_file);
 543       filesel->fileop_ren_file = NULL;
 544     }
 545
 546   if (filesel->fileop_del_file)
 547     {
 548       gtk_widget_destroy (filesel->fileop_del_file);
 549       filesel->fileop_del_file = NULL;
 550     }
 551
 552   if (filesel->fileop_c_dir)
 553     {
 554       gtk_widget_destroy (filesel->fileop_c_dir);
 555       filesel->fileop_c_dir = NULL;
 556     }
 557 }
 558
 559
 560
 561 void
 562 gtk_file_selection_set_filename (GtkFileSelection *filesel,
 563                                  const gchar      *filename)
 564 {
 565   char  buf[MAXPATHLEN];
 566   const char *name, *last_slash;
 567
 568   g_return_if_fail (filesel != NULL);
 569   g_return_if_fail (GTK_IS_FILE_SELECTION (filesel));
 570   g_return_if_fail (filename != NULL);
 571
 572   last_slash = strrchr (filename, '/');
 573
 574   if (!last_slash)
 575     {
 576       buf[0] = 0;
 577       name = filename;
 578     }
 579   else
 580     {
 581       gint len = MIN (MAXPATHLEN - 1, last_slash - filename + 1);
 582
 583       strncpy (buf, filename, len);
 584       buf[len] = 0;
 585
 586       name = last_slash + 1;
 587     }
 588
 589   gtk_file_selection_populate (filesel, buf, FALSE);
 590
 591   if (filesel->selection_entry)
 592     gtk_entry_set_text (GTK_ENTRY (filesel->selection_entry), name);
 593 }
 594
 595 gchar*
 596 gtk_file_selection_get_filename (GtkFileSelection *filesel)
 597 {
 598   static char nothing[2] = "";
 599   char *text;
 600   char *filename;
 601
 602   g_return_val_if_fail (filesel != NULL, nothing);
 603   g_return_val_if_fail (GTK_IS_FILE_SELECTION (filesel), nothing);
 604
 605   text = gtk_entry_get_text (GTK_ENTRY (filesel->selection_entry));
 606   if (text)
 607     {
 608       filename = cmpl_completion_fullname (text, filesel->cmpl_state);
 609       return filename;
 610     }
 611
 612   return nothing;
 613 }
 614
 615 static void
 616 gtk_file_selection_destroy (GtkObject *object)
 617 {
 618   GtkFileSelection *filesel;
 619   GList *list;
 620   HistoryCallbackArg *callback_arg;
 621
 622   g_return_if_fail (object != NULL);
 623   g_return_if_fail (GTK_IS_FILE_SELECTION (object));
 624
 625   filesel = GTK_FILE_SELECTION (object);
 626
 627   if (filesel->fileop_dialog)
 628           gtk_widget_destroy (filesel->fileop_dialog);
 629
 630   if (filesel->history_list)
 631     {
 632       list = filesel->history_list;
 633       while (list)
 634         {
 635           callback_arg = list->data;
 636           g_free (callback_arg->directory);
 637           list = list->next;
 638         }
 639       g_list_free (filesel->history_list);
 640       filesel->history_list = NULL;
 641     }
 642
 643   cmpl_free_state (filesel->cmpl_state);
 644   filesel->cmpl_state = NULL;
 645
 646   if (GTK_OBJECT_CLASS (parent_class)->destroy)
 647     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
 648 }
 649
 650 /* Begin file operations callbacks */
 651
 652 static void
 653 gtk_file_selection_fileop_error (gchar *error_message)
 654 {
 655   GtkWidget *label;
 656   GtkWidget *vbox;
 657   GtkWidget *button;
 658   GtkWidget *dialog;
 659
 660   g_return_if_fail (error_message != NULL);
 661
 662   /* main dialog */
 663   dialog = gtk_dialog_new ();
 664   /*
 665   gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
 666                       (GtkSignalFunc) gtk_file_selection_fileop_destroy,
 667                       (gpointer) fs);
 668   */
 669   gtk_window_set_title (GTK_WINDOW (dialog), "Error");
 670   gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
 671
 672   vbox = gtk_vbox_new(FALSE, 0);
 673   gtk_container_border_width(GTK_CONTAINER(vbox), 8);
 674   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
 675                      FALSE, FALSE, 0);
 676   gtk_widget_show(vbox);
 677
 678   label = gtk_label_new(error_message);
 679   gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
 680   gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
 681   gtk_widget_show(label);
 682
 683   /* yes, we free it */
 684   g_free (error_message);
 685
 686   /* close button */
 687   button = gtk_button_new_with_label ("Close");
 688   gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
 689                              (GtkSignalFunc) gtk_widget_destroy,
 690                              (gpointer) dialog);
 691   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 692                      button, TRUE, TRUE, 0);
 693   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 694   gtk_widget_grab_default(button);
 695   gtk_widget_show (button);
 696
 697   gtk_widget_show (dialog);
 698 }
 699
 700 static void
 701 gtk_file_selection_fileop_destroy (GtkWidget *widget, gpointer data)
 702 {
 703   GtkFileSelection *fs = data;
 704
 705   g_return_if_fail (fs != NULL);
 706   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 707
 708   fs->fileop_dialog = NULL;
 709 }
 710
 711
 712 static void
 713 gtk_file_selection_create_dir_confirmed (GtkWidget *widget, gpointer data)
 714 {
 715   GtkFileSelection *fs = data;
 716   gchar *dirname;
 717   gchar *path;
 718   gchar *full_path;
 719   gchar *buf;
 720   CompletionState *cmpl_state;
 721
 722   g_return_if_fail (fs != NULL);
 723   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 724
 725   dirname = gtk_entry_get_text (GTK_ENTRY (fs->fileop_entry));
 726   cmpl_state = (CompletionState*) fs->cmpl_state;
 727   path = cmpl_reference_position (cmpl_state);
 728
 729   full_path = g_strconcat (path, "/", dirname, NULL);
 730   if ( (mkdir (full_path, 0755) < 0) )
 731     {
 732       buf = g_strconcat ("Error creating directory \"", dirname, "\":  ",
 733                          g_strerror(errno), NULL);
 734       gtk_file_selection_fileop_error (buf);
 735     }
 736   g_free (full_path);
 737
 738   gtk_widget_destroy (fs->fileop_dialog);
 739   gtk_file_selection_populate (fs, "", FALSE);
 740 }
 741
 742 static void
 743 gtk_file_selection_create_dir (GtkWidget *widget, gpointer data)
 744 {
 745   GtkFileSelection *fs = data;
 746   GtkWidget *label;
 747   GtkWidget *dialog;
 748   GtkWidget *vbox;
 749   GtkWidget *button;
 750
 751   g_return_if_fail (fs != NULL);
 752   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 753
 754   if (fs->fileop_dialog)
 755           return;
 756
 757   /* main dialog */
 758   fs->fileop_dialog = dialog = gtk_dialog_new ();
 759   gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
 760                       (GtkSignalFunc) gtk_file_selection_fileop_destroy,
 761                       (gpointer) fs);
 762   gtk_window_set_title (GTK_WINDOW (dialog), "Create Directory");
 763   gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
 764   gtk_widget_show (dialog);
 765
 766   vbox = gtk_vbox_new(FALSE, 0);
 767   gtk_container_border_width(GTK_CONTAINER(vbox), 8);
 768   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
 769                      FALSE, FALSE, 0);
 770   gtk_widget_show(vbox);
 771
 772   label = gtk_label_new("Directory name:");
 773   gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
 774   gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
 775   gtk_widget_show(label);
 776
 777   /*  The directory entry widget  */
 778   fs->fileop_entry = gtk_entry_new ();
 779   gtk_box_pack_start (GTK_BOX (vbox), fs->fileop_entry,
 780                       TRUE, TRUE, 5);
 781   GTK_WIDGET_SET_FLAGS(fs->fileop_entry, GTK_CAN_DEFAULT);
 782   gtk_widget_show (fs->fileop_entry);
 783
 784   /* buttons */
 785   button = gtk_button_new_with_label ("Create");
 786   gtk_signal_connect (GTK_OBJECT (button), "clicked",
 787                       (GtkSignalFunc) gtk_file_selection_create_dir_confirmed,
 788                       (gpointer) fs);
 789   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 790                      button, TRUE, TRUE, 0);
 791   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 792   gtk_widget_show(button);
 793
 794   button = gtk_button_new_with_label ("Cancel");
 795   gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
 796                              (GtkSignalFunc) gtk_widget_destroy,
 797                              (gpointer) dialog);
 798   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 799                      button, TRUE, TRUE, 0);
 800   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 801   gtk_widget_grab_default(button);
 802   gtk_widget_show (button);
 803 }
 804
 805 static void
 806 gtk_file_selection_delete_file_confirmed (GtkWidget *widget, gpointer data)
 807 {
 808   GtkFileSelection *fs = data;
 809   CompletionState *cmpl_state;
 810   gchar *path;
 811   gchar *full_path;
 812   gchar *buf;
 813
 814   g_return_if_fail (fs != NULL);
 815   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 816
 817   cmpl_state = (CompletionState*) fs->cmpl_state;
 818   path = cmpl_reference_position (cmpl_state);
 819
 820   full_path = g_strconcat (path, "/", fs->fileop_file, NULL);
 821   if ( (unlink (full_path) < 0) )
 822     {
 823       buf = g_strconcat ("Error deleting file \"", fs->fileop_file, "\":  ",
 824                          g_strerror(errno), NULL);
 825       gtk_file_selection_fileop_error (buf);
 826     }
 827   g_free (full_path);
 828
 829   gtk_widget_destroy (fs->fileop_dialog);
 830   gtk_file_selection_populate (fs, "", FALSE);
 831 }
 832
 833 static void
 834 gtk_file_selection_delete_file (GtkWidget *widget, gpointer data)
 835 {
 836   GtkFileSelection *fs = data;
 837   GtkWidget *label;
 838   GtkWidget *vbox;
 839   GtkWidget *button;
 840   GtkWidget *dialog;
 841   gchar *filename;
 842   gchar *buf;
 843
 844   g_return_if_fail (fs != NULL);
 845   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 846
 847   if (fs->fileop_dialog)
 848           return;
 849
 850   filename = gtk_entry_get_text (GTK_ENTRY (fs->selection_entry));
 851   if (strlen(filename) < 1)
 852           return;
 853
 854   fs->fileop_file = filename;
 855
 856   /* main dialog */
 857   fs->fileop_dialog = dialog = gtk_dialog_new ();
 858   gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
 859                       (GtkSignalFunc) gtk_file_selection_fileop_destroy,
 860                       (gpointer) fs);
 861   gtk_window_set_title (GTK_WINDOW (dialog), "Delete File");
 862   gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
 863
 864   vbox = gtk_vbox_new(FALSE, 0);
 865   gtk_container_border_width(GTK_CONTAINER(vbox), 8);
 866   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
 867                      FALSE, FALSE, 0);
 868   gtk_widget_show(vbox);
 869
 870   buf = g_strconcat ("Really delete file \"", filename, "\" ?", NULL);
 871   label = gtk_label_new(buf);
 872   gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
 873   gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
 874   gtk_widget_show(label);
 875   g_free(buf);
 876
 877   /* buttons */
 878   button = gtk_button_new_with_label ("Delete");
 879   gtk_signal_connect (GTK_OBJECT (button), "clicked",
 880                       (GtkSignalFunc) gtk_file_selection_delete_file_confirmed,
 881                       (gpointer) fs);
 882   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 883                      button, TRUE, TRUE, 0);
 884   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 885   gtk_widget_show(button);
 886
 887   button = gtk_button_new_with_label ("Cancel");
 888   gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
 889                              (GtkSignalFunc) gtk_widget_destroy,
 890                              (gpointer) dialog);
 891   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 892                      button, TRUE, TRUE, 0);
 893   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 894   gtk_widget_grab_default(button);
 895   gtk_widget_show (button);
 896
 897   gtk_widget_show (dialog);
 898 }
 899
 900 static void
 901 gtk_file_selection_rename_file_confirmed (GtkWidget *widget, gpointer data)
 902 {
 903   GtkFileSelection *fs = data;
 904   gchar *buf;
 905   gchar *file;
 906   gchar *path;
 907   gchar *new_filename;
 908   gchar *old_filename;
 909   CompletionState *cmpl_state;
 910
 911   g_return_if_fail (fs != NULL);
 912   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 913
 914   file = gtk_entry_get_text (GTK_ENTRY (fs->fileop_entry));
 915   cmpl_state = (CompletionState*) fs->cmpl_state;
 916   path = cmpl_reference_position (cmpl_state);
 917
 918   new_filename = g_strconcat (path, "/", file, NULL);
 919   old_filename = g_strconcat (path, "/", fs->fileop_file, NULL);
 920
 921   if ( (rename (old_filename, new_filename)) < 0)
 922     {
 923       buf = g_strconcat ("Error renaming file \"", file, "\":  ",
 924                          g_strerror(errno), NULL);
 925       gtk_file_selection_fileop_error (buf);
 926     }
 927   g_free (new_filename);
 928   g_free (old_filename);
 929
 930   gtk_widget_destroy (fs->fileop_dialog);
 931   gtk_file_selection_populate (fs, "", FALSE);
 932 }
 933
 934 static void
 935 gtk_file_selection_rename_file (GtkWidget *widget, gpointer data)
 936 {
 937   GtkFileSelection *fs = data;
 938   GtkWidget *label;
 939   GtkWidget *dialog;
 940   GtkWidget *vbox;
 941   GtkWidget *button;
 942   gchar *buf;
 943
 944   g_return_if_fail (fs != NULL);
 945   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
 946
 947   if (fs->fileop_dialog)
 948           return;
 949
 950   fs->fileop_file = gtk_entry_get_text (GTK_ENTRY (fs->selection_entry));
 951   if (strlen(fs->fileop_file) < 1)
 952           return;
 953
 954   /* main dialog */
 955   fs->fileop_dialog = dialog = gtk_dialog_new ();
 956   gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
 957                       (GtkSignalFunc) gtk_file_selection_fileop_destroy,
 958                       (gpointer) fs);
 959   gtk_window_set_title (GTK_WINDOW (dialog), "Rename File");
 960   gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
 961   gtk_widget_show (dialog);
 962
 963   vbox = gtk_vbox_new(FALSE, 0);
 964   gtk_container_border_width(GTK_CONTAINER(vbox), 8);
 965   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), vbox,
 966                      FALSE, FALSE, 0);
 967   gtk_widget_show(vbox);
 968
 969   buf = g_strconcat ("Rename file \"", fs->fileop_file, "\" to:", NULL);
 970   label = gtk_label_new(buf);
 971   gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
 972   gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 5);
 973   gtk_widget_show(label);
 974   g_free(buf);
 975
 976   /* New filename entry */
 977   fs->fileop_entry = gtk_entry_new ();
 978   gtk_box_pack_start (GTK_BOX (vbox), fs->fileop_entry,
 979                       TRUE, TRUE, 5);
 980   GTK_WIDGET_SET_FLAGS(fs->fileop_entry, GTK_CAN_DEFAULT);
 981   gtk_widget_show (fs->fileop_entry);
 982
 983   gtk_entry_set_text (GTK_ENTRY (fs->fileop_entry), fs->fileop_file);
 984   gtk_editable_select_region (GTK_EDITABLE (fs->fileop_entry),
 985                               0, strlen (fs->fileop_file));
 986
 987   /* buttons */
 988   button = gtk_button_new_with_label ("Rename");
 989   gtk_signal_connect (GTK_OBJECT (button), "clicked",
 990                       (GtkSignalFunc) gtk_file_selection_rename_file_confirmed,
 991                       (gpointer) fs);
 992   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
 993                      button, TRUE, TRUE, 0);
 994   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
 995   gtk_widget_show(button);
 996
 997   button = gtk_button_new_with_label ("Cancel");
 998   gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
 999                              (GtkSignalFunc) gtk_widget_destroy,
1000                              (gpointer) dialog);
1001   gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area),
1002                      button, TRUE, TRUE, 0);
1003   GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
1004   gtk_widget_grab_default(button);
1005   gtk_widget_show (button);
1006 }
1007
1008
1009 static gint
1010 gtk_file_selection_key_press (GtkWidget   *widget,
1011                               GdkEventKey *event,
1012                               gpointer     user_data)
1013 {
1014   GtkFileSelection *fs;
1015   char *text;
1016
1017   g_return_val_if_fail (widget != NULL, FALSE);
1018   g_return_val_if_fail (event != NULL, FALSE);
1019
1020   if (event->keyval == GDK_Tab)
1021     {
1022       gtk_signal_emit_stop_by_name (GTK_OBJECT (widget), "key_press_event");
1023
1024       fs = GTK_FILE_SELECTION (user_data);
1025       text = gtk_entry_get_text (GTK_ENTRY (fs->selection_entry));
1026       gtk_file_selection_populate (fs, text, TRUE);
1027
1028       return TRUE;
1029     }
1030
1031   return FALSE;
1032 }
1033
1034
1035 static void
1036 gtk_file_selection_history_callback (GtkWidget *widget, gpointer data)
1037 {
1038   GtkFileSelection *fs = data;
1039   HistoryCallbackArg *callback_arg;
1040   GList *list;
1041
1042   g_return_if_fail (fs != NULL);
1043   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
1044
1045   list = fs->history_list;
1046
1047   while (list) {
1048     callback_arg = list->data;
1049
1050     if (callback_arg->menu_item == widget)
1051       {
1052         gtk_file_selection_populate (fs, callback_arg->directory, FALSE);
1053         break;
1054       }
1055
1056     list = list->next;
1057   }
1058 }
1059
1060 static void
1061 gtk_file_selection_update_history_menu (GtkFileSelection *fs,
1062                                         gchar *current_directory)
1063 {
1064   HistoryCallbackArg *callback_arg;
1065   GtkWidget *menu_item;
1066   GList *list;
1067   gchar *current_dir;
1068   gchar *directory;
1069   gint dir_len;
1070   gint i;
1071
1072   g_return_if_fail (fs != NULL);
1073   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
1074   g_return_if_fail (current_directory != NULL);
1075
1076   list = fs->history_list;
1077
1078   if (fs->history_menu)
1079     {
1080       while (list) {
1081         callback_arg = list->data;
1082         g_free (callback_arg->directory);
1083         list = list->next;
1084       }
1085       g_list_free (fs->history_list);
1086       fs->history_list = NULL;
1087
1088       gtk_widget_destroy (fs->history_menu);
1089     }
1090
1091   fs->history_menu = gtk_menu_new();
1092
1093   current_dir = g_strdup (current_directory);
1094
1095   dir_len = strlen (current_dir);
1096
1097   for (i = dir_len; i >= 0; i--)
1098     {
1099       /* the i == dir_len is to catch the full path for the first
1100        * entry. */
1101       if ( (current_dir[i] == '/') || (i == dir_len))
1102         {
1103           /* another small hack to catch the full path */
1104           if (i != dir_len)
1105                   current_dir[i + 1] = '\0';
1106           menu_item = gtk_menu_item_new_with_label (current_dir);
1107           directory = g_strdup (current_dir);
1108
1109           callback_arg = g_new (HistoryCallbackArg, 1);
1110           callback_arg->menu_item = menu_item;
1111
1112           /* since the autocompletion gets confused if you don't
1113            * supply a trailing '/' on a dir entry, set the full
1114            * (current) path to "" which just refreshes the filesel */
1115           if (dir_len == i) {
1116             callback_arg->directory = g_strdup ("");
1117           } else {
1118             callback_arg->directory = directory;
1119           }
1120
1121           fs->history_list = g_list_append (fs->history_list, callback_arg);
1122
1123           gtk_signal_connect (GTK_OBJECT (menu_item), "activate",
1124                               (GtkSignalFunc) gtk_file_selection_history_callback,
1125                               (gpointer) fs);
1126           gtk_menu_append (GTK_MENU (fs->history_menu), menu_item);
1127           gtk_widget_show (menu_item);
1128         }
1129     }
1130
1131   gtk_option_menu_set_menu (GTK_OPTION_MENU (fs->history_pulldown),
1132                             fs->history_menu);
1133   g_free (current_dir);
1134 }
1135
1136 static void
1137 gtk_file_selection_file_button (GtkWidget *widget,
1138                                gint row,
1139                                gint column,
1140                                GdkEventButton *bevent,
1141                                gpointer user_data)
1142 {
1143   GtkFileSelection *fs = NULL;
1144   gchar *filename;
1145
1146   g_return_if_fail (GTK_IS_CLIST (widget));
1147
1148   fs = user_data;
1149   g_return_if_fail (fs != NULL);
1150   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
1151
1152   filename = gtk_clist_get_row_data (GTK_CLIST (fs->file_list), row);
1153
1154   if (bevent && filename)
1155     {
1156       switch (bevent->type)
1157         {
1158         case GDK_BUTTON_PRESS:
1159           gtk_entry_set_text (GTK_ENTRY (fs->selection_entry), filename);
1160           break;
1161
1162         case GDK_2BUTTON_PRESS:
1163           gtk_button_clicked (GTK_BUTTON (fs->ok_button));
1164           break;
1165
1166         default:
1167           break;
1168         }
1169     }
1170 }
1171
1172 static void
1173 gtk_file_selection_dir_button (GtkWidget *widget,
1174                                gint row,
1175                                gint column,
1176                                GdkEventButton *bevent,
1177                                gpointer user_data)
1178 {
1179   GtkFileSelection *fs = NULL;
1180   gchar *filename;
1181
1182   g_return_if_fail (GTK_IS_CLIST (widget));
1183
1184   fs = GTK_FILE_SELECTION (user_data);
1185   g_return_if_fail (fs != NULL);
1186   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
1187
1188   filename = gtk_clist_get_row_data (GTK_CLIST (fs->dir_list), row);
1189
1190   if (bevent && filename) {
1191
1192     switch (bevent->type)
1193       {
1194       case GDK_BUTTON_PRESS:
1195         gtk_entry_set_text (GTK_ENTRY (fs->selection_entry), filename);
1196         break;
1197
1198       case GDK_2BUTTON_PRESS:
1199         gtk_file_selection_populate (fs, filename, FALSE);
1200         break;
1201
1202       default:
1203         break;
1204       }
1205   }
1206 }
1207
1208 static void
1209 gtk_file_selection_populate (GtkFileSelection *fs,
1210                              gchar            *rel_path,
1211                              gint              try_complete)
1212 {
1213   CompletionState *cmpl_state;
1214   PossibleCompletion* poss;
1215   gchar* filename;
1216   gint row;
1217   gchar* rem_path = rel_path;
1218   gchar* sel_text;
1219   gchar* text[2];
1220   gint did_recurse = FALSE;
1221   gint possible_count = 0;
1222   gint selection_index = -1;
1223
1224   g_return_if_fail (fs != NULL);
1225   g_return_if_fail (GTK_IS_FILE_SELECTION (fs));
1226
1227   cmpl_state = (CompletionState*) fs->cmpl_state;
1228   poss = cmpl_completion_matches (rel_path, &rem_path, cmpl_state);
1229
1230   if (!cmpl_state_okay (cmpl_state))
1231     {
1232       /* Something went wrong. */
1233       gtk_file_selection_abort (fs);
1234       return;
1235     }
1236
1237   g_assert (cmpl_state->reference_dir);
1238
1239   gtk_clist_freeze (GTK_CLIST (fs->dir_list));
1240   gtk_clist_clear (GTK_CLIST (fs->dir_list));
1241   gtk_clist_freeze (GTK_CLIST (fs->file_list));
1242   gtk_clist_clear (GTK_CLIST (fs->file_list));
1243
1244   /* Set the dir_list to include ./ and ../ */
1245   text[1] = NULL;
1246   text[0] = "./";
1247   row = gtk_clist_append (GTK_CLIST (fs->dir_list), text);
1248   gtk_clist_set_row_data (GTK_CLIST (fs->dir_list), row, "./");
1249
1250   text[0] = "../";
1251   row = gtk_clist_append (GTK_CLIST (fs->dir_list), text);
1252   gtk_clist_set_row_data (GTK_CLIST (fs->dir_list), row, "../");
1253
1254   while (poss)
1255     {
1256       if (cmpl_is_a_completion (poss))
1257         {
1258           possible_count += 1;
1259
1260           filename = g_strdup (cmpl_this_completion (poss));
1261
1262           text[0] = filename;
1263
1264           if (cmpl_is_directory (poss))
1265             {
1266               if (strcmp (filename, "./") != 0 &&
1267                   strcmp (filename, "../") != 0)
1268                 {
1269                   row = gtk_clist_append (GTK_CLIST (fs->dir_list), text);
1270                   gtk_clist_set_row_data_full (GTK_CLIST (fs->dir_list), row,
1271                                                filename, (GtkDestroyNotify) g_free);
1272                 }
1273             }
1274           else
1275             {
1276               row = gtk_clist_append (GTK_CLIST (fs->file_list), text);
1277               gtk_clist_set_row_data_full (GTK_CLIST (fs->file_list), row,
1278                                            filename ,(GtkDestroyNotify) g_free);
1279             }
1280         }
1281
1282       poss = cmpl_next_completion (cmpl_state);
1283     }
1284
1285   gtk_clist_thaw (GTK_CLIST (fs->dir_list));
1286   gtk_clist_thaw (GTK_CLIST (fs->file_list));
1287
1288   /* File lists are set. */
1289
1290   g_assert (cmpl_state->reference_dir);
1291
1292   if (try_complete)
1293     {
1294
1295       /* User is trying to complete filenames, so advance the user's input
1296        * string to the updated_text, which is the common leading substring
1297        * of all possible completions, and if its a directory attempt
1298        * attempt completions in it. */
1299
1300       if (cmpl_updated_text (cmpl_state)[0])
1301         {
1302
1303           if (cmpl_updated_dir (cmpl_state))
1304             {
1305               gchar* dir_name = g_strdup (cmpl_updated_text (cmpl_state));
1306
1307               did_recurse = TRUE;
1308
1309               gtk_file_selection_populate (fs, dir_name, TRUE);
1310
1311               g_free (dir_name);
1312             }
1313           else
1314             {
1315               if (fs->selection_entry)
1316                       gtk_entry_set_text (GTK_ENTRY (fs->selection_entry),
1317                                           cmpl_updated_text (cmpl_state));
1318             }
1319         }
1320       else
1321         {
1322           selection_index = cmpl_last_valid_char (cmpl_state) -
1323                             (strlen (rel_path) - strlen (rem_path));
1324           if (fs->selection_entry)
1325             gtk_entry_set_text (GTK_ENTRY (fs->selection_entry), rem_path);
1326         }
1327     }
1328   else
1329     {
1330       if (fs->selection_entry)
1331         gtk_entry_set_text (GTK_ENTRY (fs->selection_entry), "");
1332     }
1333
1334   if (!did_recurse)
1335     {
1336       if (fs->selection_entry)
1337         gtk_entry_set_position (GTK_ENTRY (fs->selection_entry), selection_index);
1338
1339       if (fs->selection_entry)
1340         {
1341           sel_text = g_new (char, strlen (cmpl_reference_position (cmpl_state)) +
1342                             sizeof ("Selection: "));
1343           strcpy (sel_text, "Selection: ");
1344           strcat (sel_text, cmpl_reference_position (cmpl_state));
1345
1346           gtk_label_set (GTK_LABEL (fs->selection_text), sel_text);
1347           g_free (sel_text);
1348         }
1349
1350       if (fs->history_pulldown)
1351         {
1352           gtk_file_selection_update_history_menu (fs, cmpl_reference_position (cmpl_state));
1353         }
1354
1355     }
1356 }
1357
1358 static void
1359 gtk_file_selection_abort (GtkFileSelection *fs)
1360 {
1361   gchar err_buf[256];
1362
1363   sprintf (err_buf, "Directory unreadable: %s", cmpl_strerror (cmpl_errno));
1364
1365   /*  BEEP gdk_beep();  */
1366
1367   if (fs->selection_entry)
1368     gtk_label_set (GTK_LABEL (fs->selection_text), err_buf);
1369 }
1370
1371 /**********************************************************************/
1372 /*                        External Interface                          */
1373 /**********************************************************************/
1374
1375 /* The four completion state selectors
1376  */
1377 static gchar*
1378 cmpl_updated_text (CompletionState* cmpl_state)
1379 {
1380   return cmpl_state->updated_text;
1381 }
1382
1383 static gint
1384 cmpl_updated_dir (CompletionState* cmpl_state)
1385 {
1386   return cmpl_state->re_complete;
1387 }
1388
1389 static gchar*
1390 cmpl_reference_position (CompletionState* cmpl_state)
1391 {
1392   return cmpl_state->reference_dir->fullname;
1393 }
1394
1395 static gint
1396 cmpl_last_valid_char (CompletionState* cmpl_state)
1397 {
1398   return cmpl_state->last_valid_char;
1399 }
1400
1401 static gchar*
1402 cmpl_completion_fullname (gchar* text, CompletionState* cmpl_state)
1403 {
1404   if (text[0] == '/')
1405     {
1406       strcpy (cmpl_state->updated_text, text);
1407     }
1408   else if (text[0] == '~')
1409     {
1410       CompletionDir* dir;
1411       char* slash;
1412
1413       dir = open_user_dir (text, cmpl_state);
1414
1415       if (!dir)
1416         {
1417           /* spencer says just return ~something, so
1418            * for now just do it. */
1419           strcpy (cmpl_state->updated_text, text);
1420         }
1421       else
1422         {
1423
1424           strcpy (cmpl_state->updated_text, dir->fullname);
1425
1426           slash = strchr (text, '/');
1427
1428           if (slash)
1429             strcat (cmpl_state->updated_text, slash);
1430         }
1431     }
1432   else
1433     {
1434       strcpy (cmpl_state->updated_text, cmpl_state->reference_dir->fullname);
1435       strcat (cmpl_state->updated_text, "/");
1436       strcat (cmpl_state->updated_text, text);
1437     }
1438
1439   return cmpl_state->updated_text;
1440 }
1441
1442 /* The three completion selectors
1443  */
1444 static gchar*
1445 cmpl_this_completion (PossibleCompletion* pc)
1446 {
1447   return pc->text;
1448 }
1449
1450 static gint
1451 cmpl_is_directory (PossibleCompletion* pc)
1452 {
1453   return pc->is_directory;
1454 }
1455
1456 static gint
1457 cmpl_is_a_completion (PossibleCompletion* pc)
1458 {
1459   return pc->is_a_completion;
1460 }
1461
1462 /**********************************************************************/
1463 /*                       Construction, deletion                       */
1464 /**********************************************************************/
1465
1466 static CompletionState*
1467 cmpl_init_state (void)
1468 {
1469   gchar getcwd_buf[2*MAXPATHLEN];
1470   CompletionState *new_state;
1471
1472   new_state = g_new (CompletionState, 1);
1473
1474   if (!getcwd (getcwd_buf, MAXPATHLEN))
1475     {
1476       cmpl_errno = errno;
1477       return NULL;
1478     }
1479
1480   new_state->reference_dir = NULL;
1481   new_state->completion_dir = NULL;
1482   new_state->active_completion_dir = NULL;
1483
1484   if ((new_state->user_home_dir = getenv("HOME")) != NULL)
1485     {
1486       /* if this fails, get_pwdb will fill it in. */
1487       new_state->user_home_dir = g_strdup(new_state->user_home_dir);
1488     }
1489
1490   new_state->directory_storage = NULL;
1491   new_state->directory_sent_storage = NULL;
1492   new_state->last_valid_char = 0;
1493   new_state->updated_text = g_new (gchar, MAXPATHLEN);
1494   new_state->updated_text_alloc = MAXPATHLEN;
1495   new_state->the_completion.text = g_new (gchar, MAXPATHLEN);
1496   new_state->the_completion.text_alloc = MAXPATHLEN;
1497   new_state->user_dir_name_buffer = NULL;
1498   new_state->user_directories = NULL;
1499
1500   new_state->reference_dir =  open_dir (getcwd_buf, new_state);
1501
1502   if (!new_state->reference_dir)
1503     return NULL;
1504
1505   return new_state;
1506 }
1507
1508 static void
1509 cmpl_free_dir_list(GList* dp0)
1510 {
1511   GList *dp = dp0;
1512
1513   while (dp) {
1514     free_dir (dp->data);
1515     dp = dp->next;
1516   }
1517
1518   g_list_free(dp0);
1519 }
1520
1521 static void
1522 cmpl_free_dir_sent_list(GList* dp0)
1523 {
1524   GList *dp = dp0;
1525
1526   while (dp) {
1527     free_dir_sent (dp->data);
1528     dp = dp->next;
1529   }
1530
1531   g_list_free(dp0);
1532 }
1533
1534 static void
1535 cmpl_free_state (CompletionState* cmpl_state)
1536 {
1537   cmpl_free_dir_list (cmpl_state->directory_storage);
1538   cmpl_free_dir_sent_list (cmpl_state->directory_sent_storage);
1539
1540   if (cmpl_state->user_dir_name_buffer)
1541     g_free (cmpl_state->user_dir_name_buffer);
1542   if (cmpl_state->user_directories)
1543     g_free (cmpl_state->user_directories);
1544   if (cmpl_state->the_completion.text)
1545     g_free (cmpl_state->the_completion.text);
1546   if (cmpl_state->updated_text)
1547     g_free (cmpl_state->updated_text);
1548
1549   g_free (cmpl_state);
1550 }
1551
1552 static void
1553 free_dir(CompletionDir* dir)
1554 {
1555   g_free(dir->fullname);
1556   g_free(dir);
1557 }
1558
1559 static void
1560 free_dir_sent(CompletionDirSent* sent)
1561 {
1562   g_free(sent->name_buffer);
1563   g_free(sent->entries);
1564   g_free(sent);
1565 }
1566
1567 static void
1568 prune_memory_usage(CompletionState *cmpl_state)
1569 {
1570   GList* cdsl = cmpl_state->directory_sent_storage;
1571   GList* cdl = cmpl_state->directory_storage;
1572   GList* cdl0 = cdl;
1573   gint len = 0;
1574
1575   for(; cdsl && len < CMPL_DIRECTORY_CACHE_SIZE; len += 1)
1576     cdsl = cdsl->next;
1577
1578   if (cdsl) {
1579     cmpl_free_dir_sent_list(cdsl->next);
1580     cdsl->next = NULL;
1581   }
1582
1583   cmpl_state->directory_storage = NULL;
1584   while (cdl) {
1585     if (cdl->data == cmpl_state->reference_dir)
1586       cmpl_state->directory_storage = g_list_prepend(NULL, cdl->data);
1587     else
1588       free_dir (cdl->data);
1589     cdl = cdl->next;
1590   }
1591
1592   g_list_free(cdl0);
1593 }
1594
1595 /**********************************************************************/
1596 /*                        The main entrances.                         */
1597 /**********************************************************************/
1598
1599 static PossibleCompletion*
1600 cmpl_completion_matches (gchar* text_to_complete,
1601                          gchar** remaining_text,
1602                          CompletionState* cmpl_state)
1603 {
1604   gchar* first_slash;
1605   PossibleCompletion *poss;
1606
1607   prune_memory_usage(cmpl_state);
1608
1609   g_assert(text_to_complete);
1610
1611   cmpl_state->user_completion_index = -1;
1612   cmpl_state->last_completion_text = text_to_complete;
1613   cmpl_state->the_completion.text[0] = 0;
1614   cmpl_state->last_valid_char = 0;
1615   cmpl_state->updated_text_len = -1;
1616   cmpl_state->updated_text[0] = 0;
1617   cmpl_state->re_complete = FALSE;
1618
1619   first_slash = strchr(text_to_complete, '/');
1620
1621   if(text_to_complete[0] == '~' && !first_slash)
1622     {
1623       /* Text starts with ~ and there is no slash, show all the
1624        * home directory completions.
1625        */
1626       poss = attempt_homedir_completion(text_to_complete, cmpl_state);
1627
1628       update_cmpl(poss, cmpl_state);
1629
1630       return poss;
1631     }
1632
1633   cmpl_state->reference_dir =
1634     open_ref_dir(text_to_complete, remaining_text, cmpl_state);
1635
1636   if(!cmpl_state->reference_dir)
1637     return NULL;
1638
1639   cmpl_state->completion_dir =
1640     find_completion_dir(*remaining_text, remaining_text, cmpl_state);
1641
1642   cmpl_state->last_valid_char = *remaining_text - text_to_complete;
1643
1644   if(!cmpl_state->completion_dir)
1645     return NULL;
1646
1647   cmpl_state->completion_dir->cmpl_index = -1;
1648   cmpl_state->completion_dir->cmpl_parent = NULL;
1649   cmpl_state->completion_dir->cmpl_text = *remaining_text;
1650
1651   cmpl_state->active_completion_dir = cmpl_state->completion_dir;
1652
1653   cmpl_state->reference_dir = cmpl_state->completion_dir;
1654
1655   poss = attempt_file_completion(cmpl_state);
1656
1657   update_cmpl(poss, cmpl_state);
1658
1659   return poss;
1660 }
1661
1662 static PossibleCompletion*
1663 cmpl_next_completion (CompletionState* cmpl_state)
1664 {
1665   PossibleCompletion* poss = NULL;
1666
1667   cmpl_state->the_completion.text[0] = 0;
1668
1669   if(cmpl_state->user_completion_index >= 0)
1670     poss = attempt_homedir_completion(cmpl_state->last_completion_text, cmpl_state);
1671   else
1672     poss = attempt_file_completion(cmpl_state);
1673
1674   update_cmpl(poss, cmpl_state);
1675
1676   return poss;
1677 }
1678
1679 /**********************************************************************/
1680 /*                       Directory Operations                         */
1681 /**********************************************************************/
1682
1683 /* Open the directory where completion will begin from, if possible. */
1684 static CompletionDir*
1685 open_ref_dir(gchar* text_to_complete,
1686              gchar** remaining_text,
1687              CompletionState* cmpl_state)
1688 {
1689   gchar* first_slash;
1690   CompletionDir *new_dir;
1691
1692   first_slash = strchr(text_to_complete, '/');
1693
1694   if (text_to_complete[0] == '/' || !cmpl_state->reference_dir)
1695     {
1696       new_dir = open_dir("/", cmpl_state);
1697
1698       if(new_dir)
1699         *remaining_text = text_to_complete + 1;
1700     }
1701   else if (text_to_complete[0] == '~')
1702     {
1703       new_dir = open_user_dir(text_to_complete, cmpl_state);
1704
1705       if(new_dir)
1706         {
1707           if(first_slash)
1708             *remaining_text = first_slash + 1;
1709           else
1710             *remaining_text = text_to_complete + strlen(text_to_complete);
1711         }
1712       else
1713         {
1714           return NULL;
1715         }
1716     }
1717   else
1718     {
1719       *remaining_text = text_to_complete;
1720
1721       new_dir = open_dir(cmpl_state->reference_dir->fullname, cmpl_state);
1722     }
1723
1724   if(new_dir)
1725     {
1726       new_dir->cmpl_index = -1;
1727       new_dir->cmpl_parent = NULL;
1728     }
1729
1730   return new_dir;
1731 }
1732
1733 /* open a directory by user name */
1734 static CompletionDir*
1735 open_user_dir(gchar* text_to_complete,
1736               CompletionState *cmpl_state)
1737 {
1738   gchar *first_slash;
1739   gint cmp_len;
1740
1741   g_assert(text_to_complete && text_to_complete[0] == '~');
1742
1743   first_slash = strchr(text_to_complete, '/');
1744
1745   if (first_slash)
1746     cmp_len = first_slash - text_to_complete - 1;
1747   else
1748     cmp_len = strlen(text_to_complete + 1);
1749
1750   if(!cmp_len)
1751     {
1752       /* ~/ */
1753       if (!cmpl_state->user_home_dir &&
1754           !get_pwdb(cmpl_state))
1755         return NULL;
1756       return open_dir(cmpl_state->user_home_dir, cmpl_state);
1757     }
1758   else
1759     {
1760       /* ~user/ */
1761       char* copy = g_new(char, cmp_len + 1);
1762       struct passwd *pwd;
1763       strncpy(copy, text_to_complete + 1, cmp_len);
1764       copy[cmp_len] = 0;
1765       pwd = getpwnam(copy);
1766       g_free(copy);
1767       if (!pwd)
1768         {
1769           cmpl_errno = errno;
1770           return NULL;
1771         }
1772
1773       return open_dir(pwd->pw_dir, cmpl_state);
1774     }
1775 }
1776
1777 /* open a directory relative the the current relative directory */
1778 static CompletionDir*
1779 open_relative_dir(gchar* dir_name,
1780                   CompletionDir* dir,
1781                   CompletionState *cmpl_state)
1782 {
1783   gchar path_buf[2*MAXPATHLEN];
1784
1785   if(dir->fullname_len + strlen(dir_name) + 2 >= MAXPATHLEN)
1786     {
1787       cmpl_errno = CMPL_ERRNO_TOO_LONG;
1788       return NULL;
1789     }
1790
1791   strcpy(path_buf, dir->fullname);
1792
1793   if(dir->fullname_len > 1)
1794     {
1795       path_buf[dir->fullname_len] = '/';
1796       strcpy(path_buf + dir->fullname_len + 1, dir_name);
1797     }
1798   else
1799     {
1800       strcpy(path_buf + dir->fullname_len, dir_name);
1801     }
1802
1803   return open_dir(path_buf, cmpl_state);
1804 }
1805
1806 /* after the cache lookup fails, really open a new directory */
1807 static CompletionDirSent*
1808 open_new_dir(gchar* dir_name, struct stat* sbuf)
1809 {
1810   CompletionDirSent* sent;
1811   DIR* directory;
1812   gchar *buffer_ptr;
1813   struct dirent *dirent_ptr;
1814   gint buffer_size = 0;
1815   gint entry_count = 0;
1816   gint i;
1817   struct stat ent_sbuf;
1818   char path_buf[MAXPATHLEN*2];
1819   gint path_buf_len;
1820
1821   sent = g_new(CompletionDirSent, 1);
1822   sent->mtime = sbuf->st_mtime;
1823   sent->inode = sbuf->st_ino;
1824
1825   path_buf_len = strlen(dir_name);
1826
1827   if (path_buf_len > MAXPATHLEN)
1828     {
1829       cmpl_errno = CMPL_ERRNO_TOO_LONG;
1830       return NULL;
1831     }
1832
1833   strcpy(path_buf, dir_name);
1834
1835   directory = opendir(dir_name);
1836
1837   if(!directory)
1838     {
1839       cmpl_errno = errno;
1840       return NULL;
1841     }
1842
1843   while((dirent_ptr = readdir(directory)) != NULL)
1844     {
1845       int entry_len = strlen(dirent_ptr->d_name);
1846       buffer_size += entry_len + 1;
1847       entry_count += 1;
1848
1849       if(path_buf_len + entry_len + 2 >= MAXPATHLEN)
1850         {
1851           cmpl_errno = CMPL_ERRNO_TOO_LONG;
1852           closedir(directory);
1853           return NULL;
1854         }
1855     }
1856
1857   sent->name_buffer = g_new(gchar, buffer_size);
1858   sent->entries = g_new(CompletionDirEntry, entry_count);
1859   sent->entry_count = entry_count;
1860
1861   buffer_ptr = sent->name_buffer;
1862
1863   rewinddir(directory);
1864
1865   for(i = 0; i < entry_count; i += 1)
1866     {
1867       dirent_ptr = readdir(directory);
1868
1869       if(!dirent_ptr)
1870         {
1871           cmpl_errno = errno;
1872           closedir(directory);
1873           return NULL;
1874         }
1875
1876       strcpy(buffer_ptr, dirent_ptr->d_name);
1877       sent->entries[i].entry_name = buffer_ptr;
1878       buffer_ptr += strlen(dirent_ptr->d_name);
1879       *buffer_ptr = 0;
1880       buffer_ptr += 1;
1881
1882       path_buf[path_buf_len] = '/';
1883       strcpy(path_buf + path_buf_len + 1, dirent_ptr->d_name);
1884
1885       if(stat(path_buf, &ent_sbuf) >= 0 && S_ISDIR(ent_sbuf.st_mode))
1886         sent->entries[i].is_dir = 1;
1887       else
1888         /* stat may fail, and we don't mind, since it could be a
1889          * dangling symlink. */
1890         sent->entries[i].is_dir = 0;
1891     }
1892
1893   qsort(sent->entries, sent->entry_count, sizeof(CompletionDirEntry), compare_cmpl_dir);
1894
1895   closedir(directory);
1896
1897   return sent;
1898 }
1899
1900 /* open a directory by absolute pathname */
1901 static CompletionDir*
1902 open_dir(gchar* dir_name, CompletionState* cmpl_state)
1903 {
1904   struct stat sbuf;
1905   CompletionDirSent *sent;
1906   GList* cdsl;
1907
1908   if(stat(dir_name, &sbuf) < 0)
1909     {
1910       cmpl_errno = errno;
1911       return NULL;
1912     }
1913
1914   cdsl = cmpl_state->directory_sent_storage;
1915
1916   while (cdsl)
1917     {
1918       sent = cdsl->data;
1919
1920       if(sent->inode == sbuf.st_ino &&
1921          sent->mtime == sbuf.st_mtime)
1922         return attach_dir(sent, dir_name, cmpl_state);
1923
1924       cdsl = cdsl->next;
1925     }
1926
1927   sent = open_new_dir(dir_name, &sbuf);
1928
1929   if (sent) {
1930     cmpl_state->directory_sent_storage =
1931       g_list_prepend(cmpl_state->directory_sent_storage, sent);
1932
1933     return attach_dir(sent, dir_name, cmpl_state);
1934   }
1935
1936   return NULL;
1937 }
1938
1939 static CompletionDir*
1940 attach_dir(CompletionDirSent* sent, gchar* dir_name, CompletionState *cmpl_state)
1941 {
1942   CompletionDir* new_dir;
1943
1944   new_dir = g_new(CompletionDir, 1);
1945
1946   cmpl_state->directory_storage =
1947     g_list_prepend(cmpl_state->directory_storage, new_dir);
1948
1949   new_dir->sent = sent;
1950   new_dir->fullname = g_strdup(dir_name);
1951   new_dir->fullname_len = strlen(dir_name);
1952
1953   return new_dir;
1954 }
1955
1956 static gint
1957 correct_dir_fullname(CompletionDir* cmpl_dir)
1958 {
1959   gint length = strlen(cmpl_dir->fullname);
1960   struct stat sbuf;
1961
1962   if (strcmp(cmpl_dir->fullname + length - 2, "/.") == 0)
1963     {
1964       if (length == 2)
1965         {
1966           strcpy(cmpl_dir->fullname, "/");
1967           cmpl_dir->fullname_len = 1;
1968           return TRUE;
1969         } else {
1970           cmpl_dir->fullname[length - 2] = 0;
1971         }
1972     }
1973   else if (strcmp(cmpl_dir->fullname + length - 3, "/./") == 0)
1974     cmpl_dir->fullname[length - 2] = 0;
1975   else if (strcmp(cmpl_dir->fullname + length - 3, "/..") == 0)
1976     {
1977       if(length == 3)
1978         {
1979           strcpy(cmpl_dir->fullname, "/");
1980           cmpl_dir->fullname_len = 1;
1981           return TRUE;
1982         }
1983
1984       if(stat(cmpl_dir->fullname, &sbuf) < 0)
1985         {
1986           cmpl_errno = errno;
1987           return FALSE;
1988         }
1989
1990       cmpl_dir->fullname[length - 2] = 0;
1991
1992       if(!correct_parent(cmpl_dir, &sbuf))
1993         return FALSE;
1994     }
1995   else if (strcmp(cmpl_dir->fullname + length - 4, "/../") == 0)
1996     {
1997       if(length == 4)
1998         {
1999           strcpy(cmpl_dir->fullname, "/");
2000           cmpl_dir->fullname_len = 1;
2001           return TRUE;
2002         }
2003
2004       if(stat(cmpl_dir->fullname, &sbuf) < 0)
2005         {
2006           cmpl_errno = errno;
2007           return FALSE;
2008         }
2009
2010       cmpl_dir->fullname[length - 3] = 0;
2011
2012       if(!correct_parent(cmpl_dir, &sbuf))
2013         return FALSE;
2014     }
2015
2016   cmpl_dir->fullname_len = strlen(cmpl_dir->fullname);
2017
2018   return TRUE;
2019 }
2020
2021 static gint
2022 correct_parent(CompletionDir* cmpl_dir, struct stat *sbuf)
2023 {
2024   struct stat parbuf;
2025   gchar *last_slash;
2026   gchar *new_name;
2027   gchar c = 0;
2028
2029   last_slash = strrchr(cmpl_dir->fullname, '/');
2030
2031   g_assert(last_slash);
2032
2033   if(last_slash != cmpl_dir->fullname)
2034     { /* last_slash[0] = 0; */ }
2035   else
2036     {
2037       c = last_slash[1];
2038       last_slash[1] = 0;
2039     }
2040
2041   if (stat(cmpl_dir->fullname, &parbuf) < 0)
2042     {
2043       cmpl_errno = errno;
2044       return FALSE;
2045     }
2046
2047   if (parbuf.st_ino == sbuf->st_ino && parbuf.st_dev == sbuf->st_dev)
2048     /* it wasn't a link */
2049     return TRUE;
2050
2051   if(c)
2052     last_slash[1] = c;
2053   /* else
2054     last_slash[0] = '/'; */
2055
2056   /* it was a link, have to figure it out the hard way */
2057
2058   new_name = find_parent_dir_fullname(cmpl_dir->fullname);
2059
2060   if (!new_name)
2061     return FALSE;
2062
2063   g_free(cmpl_dir->fullname);
2064
2065   cmpl_dir->fullname = new_name;
2066
2067   return TRUE;
2068 }
2069
2070 static gchar*
2071 find_parent_dir_fullname(gchar* dirname)
2072 {
2073   gchar buffer[MAXPATHLEN];
2074   gchar buffer2[MAXPATHLEN];
2075
2076   if(!getcwd(buffer, MAXPATHLEN))
2077     {
2078       cmpl_errno = errno;
2079       return NULL;
2080     }
2081
2082   if(chdir(dirname) != 0 || chdir("..") != 0)
2083     {
2084       cmpl_errno = errno;
2085       return NULL;
2086     }
2087
2088   if(!getcwd(buffer2, MAXPATHLEN))
2089     {
2090       chdir(buffer);
2091       cmpl_errno = errno;
2092
2093       return NULL;
2094     }
2095
2096   if(chdir(buffer) != 0)
2097     {
2098       cmpl_errno = errno;
2099       return NULL;
2100     }
2101
2102   return g_strdup(buffer2);
2103 }
2104
2105 /**********************************************************************/
2106 /*                        Completion Operations                       */
2107 /**********************************************************************/
2108
2109 static PossibleCompletion*
2110 attempt_homedir_completion(gchar* text_to_complete,
2111                            CompletionState *cmpl_state)
2112 {
2113   gint index, length;
2114
2115   if (!cmpl_state->user_dir_name_buffer &&
2116       !get_pwdb(cmpl_state))
2117     return NULL;
2118   length = strlen(text_to_complete) - 1;
2119
2120   cmpl_state->user_completion_index += 1;
2121
2122   while(cmpl_state->user_completion_index < cmpl_state->user_directories_len)
2123     {
2124       index = first_diff_index(text_to_complete + 1,
2125                                cmpl_state->user_directories
2126                                [cmpl_state->user_completion_index].login);
2127
2128       switch(index)
2129         {
2130         case PATTERN_MATCH:
2131           break;
2132         default:
2133           if(cmpl_state->last_valid_char < (index + 1))
2134             cmpl_state->last_valid_char = index + 1;
2135           cmpl_state->user_completion_index += 1;
2136           continue;
2137         }
2138
2139       cmpl_state->the_completion.is_a_completion = 1;
2140       cmpl_state->the_completion.is_directory = 1;
2141
2142       append_completion_text("~", cmpl_state);
2143
2144       append_completion_text(cmpl_state->
2145                               user_directories[cmpl_state->user_completion_index].login,
2146                              cmpl_state);
2147
2148       return append_completion_text("/", cmpl_state);
2149     }
2150
2151   if(text_to_complete[1] ||
2152      cmpl_state->user_completion_index > cmpl_state->user_directories_len)
2153     {
2154       cmpl_state->user_completion_index = -1;
2155       return NULL;
2156     }
2157   else
2158     {
2159       cmpl_state->user_completion_index += 1;
2160       cmpl_state->the_completion.is_a_completion = 1;
2161       cmpl_state->the_completion.is_directory = 1;
2162
2163       return append_completion_text("~/", cmpl_state);
2164     }
2165 }
2166
2167 /* returns the index (>= 0) of the first differing character,
2168  * PATTERN_MATCH if the completion matches */
2169 static gint
2170 first_diff_index(gchar* pat, gchar* text)
2171 {
2172   gint diff = 0;
2173
2174   while(*pat && *text && *text == *pat)
2175     {
2176       pat += 1;
2177       text += 1;
2178       diff += 1;
2179     }
2180
2181   if(*pat)
2182     return diff;
2183
2184   return PATTERN_MATCH;
2185 }
2186
2187 static PossibleCompletion*
2188 append_completion_text(gchar* text, CompletionState* cmpl_state)
2189 {
2190   gint len, i = 1;
2191
2192   if(!cmpl_state->the_completion.text)
2193     return NULL;
2194
2195   len = strlen(text) + strlen(cmpl_state->the_completion.text) + 1;
2196
2197   if(cmpl_state->the_completion.text_alloc > len)
2198     {
2199       strcat(cmpl_state->the_completion.text, text);
2200       return &cmpl_state->the_completion;
2201     }
2202
2203   while(i < len) { i <<= 1; }
2204
2205   cmpl_state->the_completion.text_alloc = i;
2206
2207   cmpl_state->the_completion.text = (gchar*)g_realloc(cmpl_state->the_completion.text, i);
2208
2209   if(!cmpl_state->the_completion.text)
2210     return NULL;
2211   else
2212     {
2213       strcat(cmpl_state->the_completion.text, text);
2214       return &cmpl_state->the_completion;
2215     }
2216 }
2217
2218 static CompletionDir*
2219 find_completion_dir(gchar* text_to_complete,
2220                     gchar** remaining_text,
2221                     CompletionState* cmpl_state)
2222 {
2223   gchar* first_slash = strchr(text_to_complete, '/');
2224   CompletionDir* dir = cmpl_state->reference_dir;
2225   *remaining_text = text_to_complete;
2226
2227   while(first_slash)
2228     {
2229       gint len = first_slash - *remaining_text;
2230       gint found = 0;
2231       gint found_index = -1;
2232       gint i;
2233       gchar* pat_buf = g_new (gchar, len + 1);
2234
2235       strncpy(pat_buf, *remaining_text, len);
2236       pat_buf[len] = 0;
2237
2238       for(i = 0; i < dir->sent->entry_count; i += 1)
2239         {
2240           if(dir->sent->entries[i].is_dir &&
2241              fnmatch(pat_buf, dir->sent->entries[i].entry_name,
2242                      FNMATCH_FLAGS)!= FNM_NOMATCH)
2243             {
2244               if(found)
2245                 {
2246                   g_free (pat_buf);
2247                   return dir;
2248                 }
2249               else
2250                 {
2251                   found = 1;
2252                   found_index = i;
2253                 }
2254             }
2255         }
2256
2257       if(found)
2258         {
2259           CompletionDir* next = open_relative_dir(dir->sent->entries[found_index].entry_name,
2260                                                   dir, cmpl_state);
2261
2262           if(!next)
2263             {
2264               g_free (pat_buf);
2265               return NULL;
2266             }
2267
2268           next->cmpl_parent = dir;
2269
2270           dir = next;
2271
2272           if(!correct_dir_fullname(dir))
2273             {
2274               g_free(pat_buf);
2275               return NULL;
2276             }
2277
2278           *remaining_text = first_slash + 1;
2279           first_slash = strchr(*remaining_text, '/');
2280         }
2281       else
2282         {
2283           g_free (pat_buf);
2284           return NULL;
2285         }
2286
2287       g_free (pat_buf);
2288     }
2289
2290   return dir;
2291 }
2292
2293 static void
2294 update_cmpl(PossibleCompletion* poss, CompletionState* cmpl_state)
2295 {
2296   gint cmpl_len;
2297
2298   if(!poss || !cmpl_is_a_completion(poss))
2299     return;
2300
2301   cmpl_len = strlen(cmpl_this_completion(poss));
2302
2303   if(cmpl_state->updated_text_alloc < cmpl_len + 1)
2304     {
2305       cmpl_state->updated_text =
2306         (gchar*)g_realloc(cmpl_state->updated_text,
2307                           cmpl_state->updated_text_alloc);
2308       cmpl_state->updated_text_alloc = 2*cmpl_len;
2309     }
2310
2311   if(cmpl_state->updated_text_len < 0)
2312     {
2313       strcpy(cmpl_state->updated_text, cmpl_this_completion(poss));
2314       cmpl_state->updated_text_len = cmpl_len;
2315       cmpl_state->re_complete = cmpl_is_directory(poss);
2316     }
2317   else if(cmpl_state->updated_text_len == 0)
2318     {
2319       cmpl_state->re_complete = FALSE;
2320     }
2321   else
2322     {
2323       gint first_diff =
2324         first_diff_index(cmpl_state->updated_text,
2325                          cmpl_this_completion(poss));
2326
2327       cmpl_state->re_complete = FALSE;
2328
2329       if(first_diff == PATTERN_MATCH)
2330         return;
2331
2332       if(first_diff > cmpl_state->updated_text_len)
2333         strcpy(cmpl_state->updated_text, cmpl_this_completion(poss));
2334
2335       cmpl_state->updated_text_len = first_diff;
2336       cmpl_state->updated_text[first_diff] = 0;
2337     }
2338 }
2339
2340 static PossibleCompletion*
2341 attempt_file_completion(CompletionState *cmpl_state)
2342 {
2343   gchar *pat_buf, *first_slash;
2344   CompletionDir *dir = cmpl_state->active_completion_dir;
2345
2346   dir->cmpl_index += 1;
2347
2348   if(dir->cmpl_index == dir->sent->entry_count)
2349     {
2350       if(dir->cmpl_parent == NULL)
2351         {
2352           cmpl_state->active_completion_dir = NULL;
2353
2354           return NULL;
2355         }
2356       else
2357         {
2358           cmpl_state->active_completion_dir = dir->cmpl_parent;
2359
2360           return attempt_file_completion(cmpl_state);
2361         }
2362     }
2363
2364   g_assert(dir->cmpl_text);
2365
2366   first_slash = strchr(dir->cmpl_text, '/');
2367
2368   if(first_slash)
2369     {
2370       gint len = first_slash - dir->cmpl_text;
2371
2372       pat_buf = g_new (gchar, len + 1);
2373       strncpy(pat_buf, dir->cmpl_text, len);
2374       pat_buf[len] = 0;
2375     }
2376   else
2377     {
2378       gint len = strlen(dir->cmpl_text);
2379
2380       pat_buf = g_new (gchar, len + 2);
2381       strcpy(pat_buf, dir->cmpl_text);
2382       strcpy(pat_buf + len, "*");
2383     }
2384
2385   if(first_slash)
2386     {
2387       if(dir->sent->entries[dir->cmpl_index].is_dir)
2388         {
2389           if(fnmatch(pat_buf, dir->sent->entries[dir->cmpl_index].entry_name,
2390                      FNMATCH_FLAGS) != FNM_NOMATCH)
2391             {
2392               CompletionDir* new_dir;
2393
2394               new_dir = open_relative_dir(dir->sent->entries[dir->cmpl_index].entry_name,
2395                                           dir, cmpl_state);
2396
2397               if(!new_dir)
2398                 {
2399                   g_free (pat_buf);
2400                   return NULL;
2401                 }
2402
2403               new_dir->cmpl_parent = dir;
2404
2405               new_dir->cmpl_index = -1;
2406               new_dir->cmpl_text = first_slash + 1;
2407
2408               cmpl_state->active_completion_dir = new_dir;
2409
2410               g_free (pat_buf);
2411               return attempt_file_completion(cmpl_state);
2412             }
2413           else
2414             {
2415               g_free (pat_buf);
2416               return attempt_file_completion(cmpl_state);
2417             }
2418         }
2419       else
2420         {
2421           g_free (pat_buf);
2422           return attempt_file_completion(cmpl_state);
2423         }
2424     }
2425   else
2426     {
2427       if(dir->cmpl_parent != NULL)
2428         {
2429           append_completion_text(dir->fullname +
2430                                  strlen(cmpl_state->completion_dir->fullname) + 1,
2431                                  cmpl_state);
2432           append_completion_text("/", cmpl_state);
2433         }
2434
2435       append_completion_text(dir->sent->entries[dir->cmpl_index].entry_name, cmpl_state);
2436
2437       cmpl_state->the_completion.is_a_completion =
2438         (fnmatch(pat_buf, dir->sent->entries[dir->cmpl_index].entry_name,
2439                  FNMATCH_FLAGS) != FNM_NOMATCH);
2440
2441       cmpl_state->the_completion.is_directory = dir->sent->entries[dir->cmpl_index].is_dir;
2442       if(dir->sent->entries[dir->cmpl_index].is_dir)
2443         append_completion_text("/", cmpl_state);
2444
2445       g_free (pat_buf);
2446       return &cmpl_state->the_completion;
2447     }
2448 }
2449
2450
2451 static gint
2452 get_pwdb(CompletionState* cmpl_state)
2453 {
2454   struct passwd *pwd_ptr;
2455   gchar* buf_ptr, *home_dir = NULL;
2456   gint len = 0, i, count = 0;
2457
2458   if(cmpl_state->user_dir_name_buffer)
2459     return TRUE;
2460   setpwent ();
2461
2462   while ((pwd_ptr = getpwent()) != NULL)
2463     {
2464       len += strlen(pwd_ptr->pw_name);
2465       len += strlen(pwd_ptr->pw_dir);
2466       len += 2;
2467       count += 1;
2468     }
2469
2470   if (!cmpl_state->user_home_dir)
2471     {
2472       /* the loser doesn't have $HOME set */
2473       setpwent ();
2474
2475       pwd_ptr = getpwuid(getuid());
2476       if(!pwd_ptr)
2477         {
2478           cmpl_errno = errno;
2479           goto error;
2480         }
2481       home_dir = pwd_ptr->pw_dir;
2482
2483       len += strlen(home_dir);
2484       len += 1;
2485     }
2486
2487   setpwent ();
2488
2489   cmpl_state->user_dir_name_buffer = g_new(gchar, len);
2490   cmpl_state->user_directories = g_new(CompletionUserDir, count);
2491   cmpl_state->user_directories_len = count;
2492
2493   buf_ptr = cmpl_state->user_dir_name_buffer;
2494
2495   if (!cmpl_state->user_home_dir)
2496     {
2497       strcpy(buf_ptr, home_dir);
2498       cmpl_state->user_home_dir = buf_ptr;
2499       buf_ptr += strlen(buf_ptr);
2500       buf_ptr += 1;
2501     }
2502
2503   for(i = 0; i < count; i += 1)
2504     {
2505       pwd_ptr = getpwent();
2506       if(!pwd_ptr)
2507         {
2508           cmpl_errno = errno;
2509           goto error;
2510         }
2511
2512       strcpy(buf_ptr, pwd_ptr->pw_name);
2513       cmpl_state->user_directories[i].login = buf_ptr;
2514       buf_ptr += strlen(buf_ptr);
2515       buf_ptr += 1;
2516       strcpy(buf_ptr, pwd_ptr->pw_dir);
2517       cmpl_state->user_directories[i].homedir = buf_ptr;
2518       buf_ptr += strlen(buf_ptr);
2519       buf_ptr += 1;
2520     }
2521
2522   qsort(cmpl_state->user_directories,
2523         cmpl_state->user_directories_len,
2524         sizeof(CompletionUserDir),
2525         compare_user_dir);
2526
2527   endpwent();
2528
2529   return TRUE;
2530
2531 error:
2532
2533   if(cmpl_state->user_dir_name_buffer)
2534     g_free(cmpl_state->user_dir_name_buffer);
2535   if(cmpl_state->user_directories)
2536     g_free(cmpl_state->user_directories);
2537
2538   cmpl_state->user_dir_name_buffer = NULL;
2539   cmpl_state->user_directories = NULL;
2540
2541   return FALSE;
2542 }
2543
2544 static gint
2545 compare_user_dir(const void* a, const void* b)
2546 {
2547   return strcmp((((CompletionUserDir*)a))->login,
2548                 (((CompletionUserDir*)b))->login);
2549 }
2550
2551 static gint
2552 compare_cmpl_dir(const void* a, const void* b)
2553 {
2554   return strcmp((((CompletionDirEntry*)a))->entry_name,
2555                 (((CompletionDirEntry*)b))->entry_name);
2556 }
2557
2558 static gint
2559 cmpl_state_okay(CompletionState* cmpl_state)
2560 {
2561   return  cmpl_state && cmpl_state->reference_dir;
2562 }
2563
2564 static gchar*
2565 cmpl_strerror(gint err)
2566 {
2567   if(err == CMPL_ERRNO_TOO_LONG)
2568     return "Name too long";
2569   else
2570     return g_strerror (err);
2571 }