ede/efiler/fileops.cpp
2007-08-03 12:42:39 +00:00

704 lines
22 KiB
C++

/*
* $Id$
*
* EFiler - EDE File Manager
* Part of Equinox Desktop Environment (EDE).
* Copyright (c) 2000-2007 EDE Authors.
*
* This program is licenced under terms of the
* GNU General Public Licence version 2 or newer.
* See COPYING for details.
*/
// This file implements copy / move / delete operation with files
// NOT TO BE CONFUSED WITH edelib::File.h !!!
// Functions here usually call stuff from File.h, but also update
// efiler interface, display warnings to user etc.
#include "fileops.h"
#include <sys/stat.h>
#include <unistd.h> // for unlink()
#include <Fl/Fl_Window.H>
#include <Fl/Fl_Progress.H>
#include <Fl/Fl_Button.H>
#include <Fl/Fl_Menu_Button.H>
#include <Fl/filename.H>
#include <Fl/fl_ask.H>
#include <edelib/File.h>
#include <edelib/Nls.h>
#include <edelib/String.h>
#include <edelib/StrUtil.h>
#include <edelib/MimeType.h>
#include "EDE_FileView.h"
#include "Util.h"
#include "ede_ask.h" // replacement for fl_ask
Fl_Progress* cut_copy_progress;
bool stop_now;
bool overwrite_all, skip_all;
enum {
CUT,
COPY,
ASK
} operation = ASK;
// Some helper function
// -- is last character a / (doesn't call stat)?
bool my_isdir(const char* path) {
return (path[strlen(path)-1]=='/');
}
// -- wrapper around fl_filename_name() that also works with directories
const char* my_filename_name(const char* path) {
if (!my_isdir(path)) { fprintf (stderr, "Blah\n"); return fl_filename_name(path); }
static char buffer[FL_PATH_MAX];
strncpy(buffer, path, FL_PATH_MAX);
buffer[strlen(path)-1]='\0';
return fl_filename_name(buffer);
}
// Execute cut or copy operation
void do_cut_copy(bool m_copy) {
int num = view->size();
if (m_copy) operation = COPY; else operation = CUT;
// Allocate buffer
int bufsize=10000;
char* buf = (char*)malloc(sizeof(char)*bufsize);
buf[0]='\0';
// Add selected files to buffer and optionally grey icons (for cut effect)
int nselected=0;
for (int i=1; i<=num; i++) {
view->ungray(i);
if (view->selected(i)==1) {
char* t = (char*)view->path(i);
if (strncmp(t+strlen(t)-3, "/..", 3)==0) {
// Can't cut/copy the Up button ("..")
free(buf);
return;
}
char* p = (char*)view->path(i);
while (strlen(buf)+strlen(p) >= bufsize) {
bufsize+=10000;
buf = (char*)realloc(buf,sizeof(char)*bufsize);
}
if (buf[0] != '\0') strncat(buf, "\n", 1);
strncat(buf,p,strlen(p));
if (operation == CUT) view->gray(i);
nselected++;
}
}
if (nselected==0) { //nothing selected, use the focused item
int i=view->get_focus();
char* p = (char*)view->path(i);
// an individual path should never be longer > 10000 chars!
strncat(buf,p,strlen(p));
nselected=1;
}
Fl::copy(buf,strlen(buf),1); // use clipboard
free(buf);
// Deselect all and restore focus
int focused = view->get_focus();
for (int i=1; i<=num; i++)
if (view->selected(i)) view->select(i,0);
view->set_focus(focused);
// Update statusbar
if (m_copy)
statusbar->copy_label(tsprintf(_("Selected %d items for copying"), nselected));
else
statusbar->copy_label(tsprintf(_("Selected %d items for moving"), nselected));
}
// Copy single file. Returns true if operation should continue
// Note that at this point directories should be expanded into subdirectories etc.
// so when "copying" a directory we actually mean creating a new directory
bool my_copy(const char* src, const char* dest) {
FILE *fold, *fnew;
int c;
if (strcmp(src,dest)==0)
// this shouldn't happen
return true;
if (edelib::file_exists(dest)) {
// if both src and dest are directories, do nothing
if (my_isdir(src) && my_isdir(dest))
return true;
int c = -1;
if (!overwrite_all && !skip_all) {
c = ede_choice_alert(tsprintf(_("File already exists: %s. What to do?"), dest), _("&Overwrite"), _("Over&write all"), _("&Skip"), _("Skip &all"), 0); // asterisk (*) means default
}
if (c==1) overwrite_all=true;
if (c==3) skip_all=true;
if (c==2 || skip_all) {
return true;
}
// At this point either c==0 (overwrite) or overwrite_all == true
// copy directory over file
if (my_isdir(src))
unlink(dest);
// copy file over directory
// TODO: we will just skip this case because it's "impossible",
// but maybe there should be another warning
if (my_isdir(dest))
return true;
}
if (my_isdir(src)) {
if (my_isdir(dest))
return true; // directory already exists, just continue copying
// try to preserve permissions
struct stat buf;
stat(src,&buf);
if (mkdir (dest, buf.st_mode)==0)
return true; // success
// here was choice_alert
int q = ede_choice_alert(tsprintf(_("Cannot create directory %s (%d)"),dest,strerror(errno)), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
/* We don't use edelib funcs because we need to:
* know if file is creatable (e.g. if user has write permissions in target directory),
* detect errors WHILE copying (e.g. disk is full)
* update interface while copying
* set permissions after finish
if ( !edelib::file_readable(src) ) {
// here was choice_alert
int q = ede_choice_alert(tsprintf(_("Cannot read file %s"),src), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
// edelib::file_writeable() returns false if dest doesn't exist
/* if ( !edelib::file_writeable(dest) )
{
// here was choice_alert
int q = ede_choice_alert(tsprintf(_("Cannot create file %s"),dest), _("&Stop"), _("&Continue"), 0);
if (q == 0) return true; else return false;
}
// we will try to preserve permissions etc. cause that's usually what people want
if (!edelib::file_copy(src,dest,true))
fl_alert(tsprintf(_("Error copying %s to %s"),src,dest)); */
if ( ( fold = fopen( src, "rb" ) ) == NULL ) {
int q = ede_choice_alert(tsprintf(_("Cannot read file\n\t%s\n%s"), src, strerror(errno)), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
if ( ( fnew = fopen( dest, "wb" ) ) == NULL )
{
fclose ( fold );
int q = ede_choice_alert(tsprintf(_("Cannot create file\n\t%s\n%s"), dest, strerror(errno)), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
int count=0;
while (!feof(fold)) {
c = fgetc(fold);
fputc(c, fnew);
// Update interface
if (count++ > 1000) {
count=0;
Fl::check();
}
if (stop_now) break; // this will leave a half-sized file...
}
if (ferror(fold)) {
fclose(fold); // don't flush error buffer before time
fclose(fnew);
int q = ede_choice_alert(tsprintf(_("Error while reading file\n\t%s\n%s"), src, strerror(errno)), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
if (ferror(fnew)) {
fclose(fold); // don't flush error buffer before time
fclose(fnew);
int q = ede_choice_alert(tsprintf(_("Error while writing file\n\t%s\n%s"), dest, strerror(errno)), _("&Stop"), _("&Continue"), 0);
if (q == 0) return false; else return true;
}
fclose(fold);
fclose(fnew);
// attempt to preserve permissions - if it fails, we don't care
struct stat buf;
stat(src,&buf);
chmod (dest, buf.st_mode);
return true;
}
// Recursive function that creates a list of all files to be copied. All
// directories are opened and all files and subdirectories etc. are added
// separately to the list. The total number of elements will be stored in
// listsize. Returns false if user decided to interrupt copying.
bool expand_dirs(const char* src, char** &list, int &list_size, int &list_capacity) {
// Grow list if neccessary
if (list_size >= list_capacity-1) {
list_capacity += 1000;
list = (char**)realloc(list, sizeof(char**)*list_capacity);
}
// We add both files and directories to list
list[list_size++] = strdup(src);
if (my_isdir(src)) { // fl_filename_list makes sure that directories are appended with /
char new_src[PATH_MAX];
dirent **files;
// FIXME: use same sort as used in view
// FIXME: detect errors on accessing folder
int num_files = fl_filename_list(src, &files, fl_casenumericsort);
for (int i=0; i<num_files; i++) {
if (strcmp(files[i]->d_name,"./")==0 || strcmp(files[i]->d_name,"../")==0) continue;
snprintf(new_src, PATH_MAX, "%s%s", src, files[i]->d_name);
Fl::check(); // update gui
if (stop_now || !expand_dirs(new_src, list, list_size, list_capacity))
return false;
}
}
return true;
}
// Callback for Stop button on progress window
void stop_copying_cb(Fl_Widget*,void* v) {
stop_now=true;
// Let's inform user that we're stopping...
Fl_Box* caption = (Fl_Box*)v;
caption->label(_("Stopping..."));
caption->redraw();
caption->parent()->redraw();
}
// Delete currently selected file(s) and directory(es)
void do_delete() {
// TODO: Add a progress bar???
// Delete is, in my experience, *very* fast (don't know why Konqueror takes so long)
// Count all selected items, expanding directories as neccessary
int list_size = 0, list_capacity = 1000;
char** files_list = (char**)malloc(sizeof(char**)*list_capacity);
for (int i=1; i<=view->size(); i++)
if (view->selected(i)==1)
expand_dirs(view->path(i), files_list, list_size, list_capacity);
if (list_size==0) { //nothing selected, use the focused item
int i=view->get_focus();
expand_dirs(view->path(i), files_list, list_size, list_capacity);
}
// Issue a warning
// here was choice_alert
int c;
if (list_size==1 && my_isdir(files_list[0])) {
c = ede_choice_alert(tsprintf(_("Are you sure that you want to delete directory\n\t%s\nincluding everything in it?"), files_list[0]), _("Do&n't delete"), _("&Delete"), 0);
} else if (list_size==1) {
c = ede_choice_alert(tsprintf(_("Are you sure that you want to delete file %s ?"), my_filename_name(files_list[0])), _("Do&n't delete"), _("&Delete"), 0);
} else
c = ede_choice_alert(tsprintf(_("Are you sure that you want to delete %d files and directories?"), list_size), _("Do&n't delete"), _("&Delete"), 0);
if (c==1) {
// first remove files...
for (int i=0; i<list_size; i++)
if (!my_isdir(files_list[i]))
if (!edelib::file_remove(files_list[i]))
ede_alert(tsprintf(_("Couldn't delete file %s !\n%s"), fl_filename_name(files_list[i]), strerror(errno)));
// ...then directories
// since expand_dirs() returns first dirs then files, we should go in oposite direction
for (int i=list_size-1; i>=0; i--)
if (my_isdir(files_list[i]))
// if (!edelib::file_remove(files_list[i]))
// ^^ this apparently can't remove directories
if (remove(files_list[i])!=0)
ede_alert(tsprintf(_("Couldn't delete directory\n\t%s !\n%s"), files_list[i], strerror(errno)));
// refresh directory listing - optimized
for (int i=1; i<=view->size(); i++)
for (int j=0; j<list_size; j++)
if (strcmp(files_list[j],view->path(i))==0)
view->remove(i);
}
// Cleanup memory
for (int i=0; i<list_size; i++) free(files_list[i]);
free(files_list);
}
// Rename the file that has focus to given name 'c'
void do_rename(const char* c) {
edelib::String oldname(current_dir);
edelib::String newname(current_dir);
int focus = view->get_focus();
edelib::String vline(fl_filename_name(view->path(focus))); // get filename
oldname += vline.substr(0,vline.find(view->column_char(),0));
newname += c;
if (edelib::file_exists(newname.c_str()))
ede_alert(tsprintf(_("Filename already in use: %s"), newname.c_str()));
// For some reason, edelib::file_rename() always fails and returns false
// else if (!edelib::file_rename(oldname.c_str(),newname.c_str()))
// ede_alert(tsprintf(_("Rename %s to %s failed!"), oldname.c_str(), newname.c_str()));
else {
rename(oldname.c_str(),newname.c_str());
// Insert new name into vline
int i=0,j=0;
while (i != edelib::String::npos) { j=i; i=newname.find('/',j+1); }
vline = newname.substr(j+1) + vline.substr(vline.find(view->column_char(),0));
view->text(focus,vline.c_str());
view->update_path(oldname.c_str(),newname.c_str());
}
}
// Execute paste - this will copy or move files based on chosen operation
// FIXME: if user cuts some files, then does dnd from another window,
// do_paste will assume operation=CUT and won't ask the user!
void do_paste(const char* t) {
FileItem **item_list=0;
int item_list_size=0;
char *to = (char*)t;
if (!t || !fl_filename_isdir(t) || (strncmp(t+strlen(t)-3,"/..",3)==0))
to = current_dir;
fprintf (stderr, "PASTE from '%s', to '%s', type=%d\n",(char*)Fl::event_text(),to,operation);
if (!strchr(Fl::event_text(), '/'))
return; // User is pasting something that isn't files
// Tokenize event text into an array of strings ("from")
char* tmp = (char*)Fl::event_text();
int count=0;
do count++; while (tmp && (tmp = strchr(tmp+1,'\n')));
char** from = (char**)malloc(sizeof(char*) * count);
tmp = (char*)Fl::event_text();
char* tmp2;
int k=0;
do {
tmp2 = strchr(tmp,'\n');
int len=tmp2-tmp;
if (!tmp2) len=strlen(tmp);
from[k] = (char*)malloc(sizeof(char) * (len+2));
strncpy(from[k],tmp,len);
from[k][len]='\0';
// Paste from file managers with a vfs
if (strncmp(from[k],"file://",7)==0)
for (int i=0; i<=len-7; i++)
from[k][i]=from[k][i+7];
// All directories must end in /
if (fl_filename_isdir(from[k]) && (from[k][len-1] != '/')) {
from[k][len++]='/';
from[k][len]='\0';
}
fprintf (stderr, "from[%d]='%s'\n", k, from[k]);
k++;
tmp=tmp2+1;
} while (tmp2);
// Some sanity checks
for (int i=0; i<count; i++) {
// If this window is below others, try to get focus
win->take_focus();
if (strcmp(to,from[i])==0) {
//ede_alert(tsprintf(_("Can't copy directory\n\t%s\ninto itself."), to));
// This happens accidentally, so statusbar is less annoying
statusbar->copy_label(tsprintf(_("Can't copy directory %s into itself."), my_filename_name(to)));
goto FINISH;
}
if ((strncmp(to,from[i],strlen(to))==0)) {
char *k = strchr(from[i]+strlen(to), '/');
if (!k || *(k+1)=='\0') {
//ede_alert(tsprintf(_("File %s is already in directory\n\t%s"), from[i]+strlen(to), to));
statusbar->copy_label(tsprintf(_("File %s is already in directory %s"), from[i]+strlen(to), to));
goto FINISH;
}
}
}
// Resolve operation
if (operation == ASK) {
// TODO make a popup menu just like in Konqueror
/* fprintf(stderr, "x=%d y=%d\n", Fl::event_x_root(),Fl::event_y_root());
Fl_Menu_Button* mb = new Fl_Menu_Button (Fl::event_x_root(),Fl::event_y_root(),0,0);
mb->box(FL_NO_BOX);
mb->type(Fl_Menu_Button::POPUP123);
mb->add(_("&Copy"),0,cb_dnd_copy);
mb->add(_("_&Move"),0,cb_dnd_cut);
mb->add(_("C&ancel"),0,0);
mb->popup();
goto FINISH;*/
int c;
if (count==1 && my_isdir(from[0]))
c = ede_choice_alert(tsprintf(_("Copy or move directory\n\t%s\nto directory\n\t%s ?"), from[0], to), _("C&ancel"), _("&Copy"), _("&Move"));
else if (count==1)
c = ede_choice_alert(tsprintf(_("Copy or move file %s to directory\n\t%s ?"), fl_filename_name(from[0]), to), _("C&ancel"), _("&Copy"), _("&Move"));
else
c = ede_choice_alert(tsprintf(_("Copy or move file these %d files to directory\n\t%s ?"), count, to), _("C&ancel"), _("&Copy"), _("&Move"));
if (c==0) goto FINISH;
if (c==1) operation=COPY; else operation=CUT;
}
overwrite_all=false; skip_all=false;
// Moving files on same filesystem is trivial, just like rename
// We don't even need a progress bar
// OTOH maybe the two branches should be merged, lots of common code?
if (operation == CUT && is_on_same_fs(to, from[0])) {
// This list is used for updating mimetypes
if (to==current_dir) item_list = new FileItem*[count];
for (int i=0; i<count; i++) {
char *dest;
asprintf(&dest, "%s%s", to, my_filename_name(from[i]));
if (edelib::file_exists(dest)) {
int c = -1;
if (!overwrite_all && !skip_all) {
// here was choice_alert
c = ede_choice_alert(tsprintf(_("File with name\n\t%s\nalready exists. What to do?"), dest), _("&Overwrite"), _("Over&write all"), _("&Skip"), _("Skip &all"));
}
if (c==1) overwrite_all=true;
if (c==3) skip_all=true;
if (c==2 || skip_all) continue; // go to next entry
// At this point c==0 (Overwrite) or overwrite_all == true
unlink(dest);
} else if (to==current_dir) {
// Update interface - add file to list
FileItem *item = new FileItem;
item->name = fl_filename_name(from[i]);
item->realpath = dest;
if (fl_filename_isdir(dest)) {
item->icon = "folder";
item->description = "Directory";
// item->name += "/";
} else {
item->icon = "unknown";
item->description = "Unknown";
}
item_list[item_list_size++] = item;
view->add(item); // don't bother with sorting, that would be too complex
}
rename(from[i],dest);
free(dest);
}
//
// Real file moving / copying using recursive algorithm
//
} else {
stop_now = false;
// Create srcdir string
char *srcdir = strdup(from[0]);
char *p = strrchr(srcdir,'/');
if (*(p+1) == '\0') { // slash is last character - find one before
*p = '\0';
p = strrchr(srcdir,'/');
}
*(p+1) = '\0';
if (strcmp(srcdir,to)==0) {
// This should never happen cause we already checked it...
ede_alert(_("You cannot copy a file onto itself!"));
free(srcdir);
goto FINISH;
}
// Draw progress dialog
Fl_Window* progress_window = new Fl_Window(350,150);
if (operation == COPY)
progress_window->label(_("Copying files"));
else
progress_window->label(_("Moving files"));
progress_window->set_modal();
progress_window->begin();
Fl_Box* caption = new Fl_Box(20,20,310,25, _("Counting files in directories"));
caption->align(FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
cut_copy_progress = new Fl_Progress(20,60,310,20);
Fl_Button* stop_button = new Fl_Button(145,100,60,40, _("&Stop"));
stop_button->callback(stop_copying_cb,caption);
progress_window->end();
progress_window->show();
// Set ProgressBar range
cut_copy_progress->minimum(0);
cut_copy_progress->maximum(count);
cut_copy_progress->value(0);
// Count files in directories
int list_size = 0, list_capacity = 1000;
char** files_list = (char**)malloc(sizeof(char**)*list_capacity);
for (int i=0; i<count; i++) {
if (!stop_now) expand_dirs(from[i], files_list, list_size, list_capacity);
cut_copy_progress->value(i+1);
Fl::check(); // check to see if user pressed Stop
}
if (stop_now) { // user pressed stop while counting, cleanup and exit
for (int i=0; i<list_size; i++) free(files_list[i]);
free(files_list);
goto FINISH;
}
// Now copying those files
char dest[PATH_MAX];
cut_copy_progress->minimum(0);
cut_copy_progress->maximum(list_size);
cut_copy_progress->value(0);
// This list is used for updating mimetypes
if (to==current_dir) item_list = new FileItem*[list_size];
for (int i=0; i<list_size; i++) {
// Prepare dest filename
char *srcfile = files_list[i] + strlen(srcdir);
snprintf (dest, PATH_MAX, "%s%s", to, srcfile);
if (operation == COPY)
caption->copy_label(tsprintf(_("Copying %d of %d files to %s"), i, list_size, to));
else
caption->copy_label(tsprintf(_("Moving %d of %d files to %s"), i, list_size, to));
caption->redraw();
// Check if it already exists
if (edelib::file_exists(dest)) {
int c = -1;
if (!overwrite_all && !skip_all) {
// here was choice_alert
c = ede_choice_alert(tsprintf(_("File with name\n\t%s\nalready exists. What to do?"), dest), _("&Overwrite"), _("Over&write all"), _("&Skip"), _("Skip &all"));
}
if (c==1) overwrite_all=true;
if (c==3) skip_all=true;
if (c==2 || skip_all) continue; // go to next entry
// At this point c==0 (Overwrite) or overwrite_all == true
unlink(dest);
} else if (to==current_dir) {
// Update interface - add file to list
FileItem *item = new FileItem;
item->name = my_filename_name(dest);
item->realpath = dest;
if (my_isdir(dest)) {
item->icon = "folder";
item->description = "Directory";
// item->name += "/";
} else {
item->icon = "unknown";
item->description = "Unknown";
}
item_list[item_list_size++] = item;
view->add(item); // don't bother with sorting, that would be too complex
}
if (stop_now || !my_copy(files_list[i], dest))
break;
// Delete file after moving
if (operation == CUT) unlink(files_list[i]);
cut_copy_progress->value(cut_copy_progress->value()+1);
Fl::check(); // check to see if user pressed Stop
}
progress_window->hide();
// Cleanup memory
for (int i=0; i<list_size; i++) free(files_list[i]);
free(files_list);
free(srcdir);
if (stop_now) { // User pressed Stop but we don't know when, so we'll just reload
loaddir(current_dir);
goto FINISH;
}
}
// Update interface in a smart way
// Remove cutted files
if (operation == CUT)
for (int i=0; i<count; i++)
for (int j=1; j<=view->size(); j++)
if (strcmp(from[i],view->path(j))==0)
view->remove(j);
// Update mimetypes for pasted files
for (int i=0; i<item_list_size; i++) {
struct stat buf;
if (stat(from[i],&buf)) { delete item_list[i]; continue; }
FileItem *item = item_list[i];
item->date = nice_time(buf.st_mtime);
item->permissions = ""; // todo
if (item->description != "Directory") {
item->size = nice_size(buf.st_size);
edelib::MimeType mt;
mt.set(from[i]);
edelib::String desc,icon;
desc = mt.comment();
// First letter of desc should be upper case:
if (desc.length()>0 && desc[0]>='a' && desc[0]<='z') desc[0] = desc[0]-'a'+'A';
icon = mt.icon_name();
if (desc!="" || icon!="") {
if (desc != "") item->description = desc;
if (icon != "") item->icon = icon;
}
Fl::check();
}
view->update(item);
delete item_list[i];
}
delete[] item_list;
// Select the just pasted files (they're at the bottom)
if (item_list_size>0) {
view->redraw();
for (int i=view->size(),j=0; j<count; i--,j++)
view->select(i,1);
}
// Cleanup memory and exit
FINISH:
for (int i=0; i<count; i++) free(from[i]);
free(from);
// Set operation for future dnd; do_cut_copy() will change this if
// classic cut or copy is used
operation=ASK;
}