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| Current File : //usr/src/gnu/lib/libodialog/fselect.c |
/*
* program: fselect.c
* author: Marc van Kempen (wmbfmk@urc.tue.nl)
* Desc: File selection routine
*
* Copyright (c) 1995, Marc van Kempen
*
* All rights reserved.
*
* This software may be used, modified, copied, distributed, and
* sold, in both source and binary form provided that the above
* copyright and these terms are retained, verbatim, as the first
* lines of this file. Under no circumstances is the author
* responsible for the proper functioning of this software, nor does
* the author assume any responsibility for damages incurred with
* its use.
*
*/
#include <stdlib.h>
#include <unistd.h>
#include <sys/param.h>
#include <dialog.h>
#include "ui_objects.h"
#include "dir.h"
#include "dialog.priv.h"
/*
* Local prototypes
*/
char *dialog_dfselect(char *dir, char *fmask, int is_fselect);
/*
* Functions
*/
void
get_directories(DirList *d, int n, char ***names, int *nd)
/*
* Desc: return the directorienames in <dir> as an array in
* <names>, the # of entries in <nd>, memory allocated
* to *names should be freed when done with it.
*/
{
int i;
/* count the directories, which are in front */
*nd = 0;
while ((*nd < n) && (S_ISDIR(d[*nd].filestatus.st_mode))) (*nd)++;
*names = (char **) malloc( *nd * sizeof(char *) );
for (i=0; i<*nd; i++) {
(*names)[i] = (char *) malloc( strlen(d[i].filename) + 1);
strcpy((*names)[i], d[i].filename);
}
return;
} /* get_directories() */
void
get_filenames(DirList *d, int n, char ***names, int *nf)
/*
* Desc: return the filenames in <dir> as an arry in
* <names>, the # of entries in <nf>, memory allocated
* to *names should be freed when done.
*/
{
int nd, i;
/* the # of regular files is the total # of files - # of directories */
/* count the # of directories */
nd = 0;
while ((nd < n) && (S_ISDIR(d[nd].filestatus.st_mode))) nd++;
*names = (char **) malloc( (n-nd) * sizeof(char *) );
*nf = n - nd;
for (i=0; i<*nf; i++) {
(*names)[i] = (char *) malloc( strlen(d[i+nd].filename) + 1);
strcpy((*names)[i], d[i+nd].filename);
}
return;
} /* get_filenames() */
void
FreeNames(char **names, int n)
/*
* Desc: free the space occupied by names
*/
{
int i;
/* free the space occupied by names */
for (i=0; i<n; i++) {
free(names[i]);
}
free(names);
return;
} /* FreeNames() */
int
dialog_dselect_old(void)
/*
* Desc: starting from the current directory,
* choose a new current directory
*/
{
DirList *d = NULL;
char **names, old_dir[MAXPATHLEN];
WINDOW *ds_win;
ButtonObj *okbut, *cancelbut;
ListObj *dirs_obj;
StringObj *dir_obj;
char o_dir[MAXPATHLEN];
struct ComposeObj *obj = NULL;
int n, nd, okbutton, cancelbutton,
quit, cancel, ret;
ds_win = newwin(LINES-8, COLS-30, 4, 15);
if (ds_win == NULL) {
fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n",
LINES-8, COLS-30, 4, 15);
exit(1);
}
draw_box(ds_win, 0, 0, LINES-8, COLS-30, dialog_attr, border_attr);
wattrset(ds_win, dialog_attr);
mvwaddstr(ds_win, 0, (COLS-30)/2 - 9, " Directory Select ");
draw_shadow(stdscr, 4, 15, LINES-8, COLS-30);
display_helpline(ds_win, LINES-9, COLS-30);
/* the Directory string input field */
getcwd(o_dir, MAXPATHLEN);
dir_obj = NewStringObj(ds_win, "Directory:", o_dir, 1, 2, COLS-34, MAXPATHLEN-1);
AddObj(&obj, STRINGOBJ, (void *) dir_obj);
/* the list of directories */
get_dir(".", "*", &d, &n);
get_directories(d, n, &names, &nd);
dirs_obj = NewListObj(ds_win, "Directories:", names, o_dir, 5, 2,
LINES-15, COLS-48, nd);
AddObj(&obj, LISTOBJ, (void *) dirs_obj);
/* the Ok-button */
okbutton = FALSE;
okbut = NewButtonObj(ds_win, "Continue", &okbutton, 7, COLS-45);
AddObj(&obj, BUTTONOBJ, (void *) okbut);
/* the Cancel-button */
cancelbutton = FALSE;
cancelbut = NewButtonObj(ds_win, "Return", &cancelbutton, 11, COLS-44);
AddObj(&obj, BUTTONOBJ, (void *) cancelbut);
quit = FALSE;
cancel = FALSE;
strcpy(old_dir, o_dir);
while (!quit) {
ret = PollObj(&obj);
switch(ret) {
case SEL_BUTTON:
if (okbutton) {
quit = TRUE;
}
if (cancelbutton) {
quit = TRUE;
cancel = TRUE;
}
break;
case SEL_CR:
if (strcmp(old_dir, o_dir)) {
/* the directory was changed, cd into it */
if (chdir(o_dir)) {
dialog_notify("Could not change into directory");
strcpy(o_dir, old_dir);
} else {
getcwd(o_dir, MAXPATHLEN);
strcpy(old_dir, o_dir);
}
RefreshStringObj(dir_obj);
}
get_dir(".", "*", &d, &n);
FreeNames(names, nd);
get_directories(d, n, &names, &nd);
UpdateListObj(dirs_obj, names, nd);
if (((obj->prev)->obj == (void *) dirs_obj)) {
obj=obj->prev;
}
break;
case SEL_ESC:
quit = TRUE;
cancel = TRUE;
break;
case KEY_F(1):
display_helpfile();
break;
}
}
FreeNames(names, nd);
DelObj(obj);
delwin(ds_win);
return(cancel);
} /* dialog_dselect() */
int
dialog_dselect(char *dir, char *fmask)
/*
* Desc: Choose a directory
*/
{
if (dialog_dfselect(dir, fmask, FALSE)) {
return(FALSE); /* esc or cancel was pressed */
} else {
return(TRUE); /* directory was selected */
}
} /* dialog_dselect() */
char *
dialog_fselect(char *dir, char *fmask)
/*
* Desc: Choose a file from a directory
*/
{
return(dialog_dfselect(dir, fmask, TRUE));
} /* dialog_fselect() */
char *
dialog_dfselect(char *dir, char *fmask, int is_fselect)
/*
* Desc: choose a file from the directory <dir>, which
* initially display files with the mask <filemask>
* pre: <dir> is the initial directory
* only files corresponding to the mask <fmask> are displayed
* post: returns NULL if no file was selected
* else returns pointer to filename, space is allocated, should
* be freed after use.
*/
{
DirList *d = NULL;
char msg[512];
char **fnames, **dnames, *ret_name;
WINDOW *fs_win;
int n, nd, nf, ret;
StringObj *fm_obj, *dir_obj, *sel_obj;
char o_fm[255], o_dir[MAXPATHLEN], o_sel[MAXPATHLEN];
char old_fmask[255], old_dir[MAXPATHLEN];
ListObj *dirs_obj, *files_obj;
struct ComposeObj *obj = NULL, *o;
int quit, cancel;
ButtonObj *okbut_obj, *canbut_obj;
int ok_button, cancel_button;
if (chdir(dir)) {
sprintf(msg, "Could not move into specified directory: %s", dir);
dialog_notify(msg);
return(NULL);
}
getcwd(o_dir, MAXPATHLEN);
/* setup the fileselect-window and initialize its components */
fs_win = newwin(LINES-2, COLS-20, 1, 10);
if (fs_win == NULL) {
endwin();
fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n",
LINES-2, COLS-20, 2, 10);
exit(1);
}
draw_box(fs_win, 0, 0, LINES-2, COLS-20, dialog_attr, border_attr);
wattrset(fs_win, dialog_attr);
if (is_fselect) {
mvwaddstr(fs_win, 0, (COLS-20)/2 - 7, " File Select ");
} else {
mvwaddstr(fs_win, 0, (COLS-20)/2 - 9, " Directory Select ");
}
draw_shadow(stdscr, 1, 10, LINES-2, COLS-20);
display_helpline(fs_win, LINES-3, COLS-20);
/* Filemask entry */
strcpy(o_fm, fmask);
fm_obj = NewStringObj(fs_win, "Filemask:", o_fm, 1, 2, 19, 255);
AddObj(&obj, STRINGOBJ, (void *) fm_obj);
/* Directory entry */
dir_obj = NewStringObj(fs_win, "Directory:", o_dir, 1, 22, COLS-44, 255);
AddObj(&obj, STRINGOBJ, (void *) dir_obj);
/* Directory list */
get_dir(".", fmask, &d, &n); /* read the entire directory */
get_directories(d, n, &dnames, &nd); /* extract the dir-entries */
if (is_fselect) {
dirs_obj = NewListObj(fs_win, "Directories:", dnames, o_dir, 5, 2,
LINES-16, (COLS-20)/2-2, nd);
} else {
dirs_obj = NewListObj(fs_win, "Directories:", dnames, o_dir, 5, 2,
LINES-12, (COLS-20)/2-2, nd);
}
AddObj(&obj, LISTOBJ, (void *) dirs_obj);
/* Filenames list */
get_filenames(d, n, &fnames, &nf); /* extract the filenames */
if (is_fselect) {
files_obj = NewListObj(fs_win, "Files:", fnames, o_sel, 5, (COLS-20)/2+1,
LINES-16, (COLS-20)/2-3, nf);
} else {
files_obj = NewListObj(fs_win, "Files:", fnames, o_sel, 5, (COLS-20)/2+1,
LINES-12, (COLS-20)/2-3, nf);
}
AddObj(&obj, LISTOBJ, (void *) files_obj);
if (is_fselect) {
/* Selection entry */
o_sel[0] = '\0';
sel_obj = NewStringObj(fs_win, "Selection:", o_sel, LINES-10, 2, COLS-24, 255);
AddObj(&obj, STRINGOBJ, (void *) sel_obj);
}
/* Ok button */
ok_button = FALSE;
okbut_obj = NewButtonObj(fs_win, "Ok", &ok_button, LINES-6, 20);
AddObj(&obj, BUTTONOBJ, (void *) okbut_obj);
/* Cancel button */
cancel_button = FALSE;
canbut_obj = NewButtonObj(fs_win, "Cancel", &cancel_button, LINES-6, 30);
AddObj(&obj, BUTTONOBJ, (void *) canbut_obj);
/* Make sure all objects on the window are drawn */
wrefresh(fs_win);
keypad(fs_win, TRUE);
/* Start the reading */
o = obj;
strcpy(old_fmask, o_fm);
strcpy(old_dir, o_dir);
quit = FALSE;
cancel = FALSE;
while (!quit) {
ret = PollObj(&o);
switch(ret) {
case SEL_CR:
if (strcmp(old_fmask, o_fm) || strcmp(old_dir, o_dir)) {
/* reread directory and update the listobjects */
if (strcmp(old_dir, o_dir)) { /* dir entry was changed */
if (chdir(o_dir)) {
dialog_notify("Could not change into directory");
strcpy(o_dir, old_dir);
} else {
getcwd(o_dir, MAXPATHLEN);
strcpy(old_dir, o_dir);
}
RefreshStringObj(dir_obj);
} else { /* fmask entry was changed */
strcpy(old_fmask, o_fm);
}
get_dir(".", o_fm, &d, &n);
FreeNames(dnames, nd);
get_directories(d, n, &dnames, &nd);
UpdateListObj(dirs_obj, dnames, nd);
FreeNames(fnames, nf);
get_filenames(d, n, &fnames, &nf);
UpdateListObj(files_obj, fnames, nf);
if (((o->prev)->obj == (void *) dirs_obj)) {
o=o->prev;
}
}
break;
case SEL_BUTTON:
/* check which button was pressed */
if (ok_button) {
quit = TRUE;
}
if (cancel_button) {
quit = TRUE;
cancel = TRUE;
}
break;
case SEL_ESC:
quit = TRUE;
cancel = TRUE;
break;
case KEY_F(1):
case '?':
display_helpfile();
break;
}
}
DelObj(obj);
FreeNames(dnames, nd);
FreeNames(fnames, nf);
delwin(fs_win);
if (cancel || (strlen(o_sel) == 0)) {
return(NULL);
} else {
ret_name = (char *) malloc( strlen(o_sel) + 1 );
strcpy(ret_name, o_sel);
return(ret_name);
}
} /* dialog_fselect() */