ede/efiler/fileops.cpp
Vedran Ljubovic 87ef0c5509 - Beggining of dnd support
- Click on selected item to rename
- Fix problems reported by Valgrind
2007-07-27 08:36:05 +00:00

470 lines
14 KiB
C++

// 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 <Fl/Fl_Window.H>
#include <Fl/Fl_Progress.H>
#include <Fl/Fl_Button.H>
#include <Fl/filename.H>
#include <Fl/fl_ask.H>
#include <edelib/File.h>
#include <edelib/Nls.h>
#include "EDE_FileView.h"
#include "Util.h"
Fl_Progress* cut_copy_progress;
bool stop_now;
bool overwrite_all, skip_all;
char **cut_copy_buffer = 0;
bool operation_is_copy = false;
// Execute cut or copy operation when List View is active
void do_cut_copy(bool m_copy) {
// Count selected icons, for malloc
int num = view->size();
int nselected = 0;
for (int i=1; i<=num; i++)
if (view->selected(i)) {
nselected++;
// Can not cut/copy the up directory button (..)
const char* tmp = view->text(i);
if (tmp[0]=='.' && tmp[1]=='.' && (tmp[2]=='\0' || tmp[2]==view->column_char())) return;
}
// Clear cut/copy buffer and optionally ungray the previously cutted icons
if (cut_copy_buffer) {
for (int i=0; cut_copy_buffer[i]; i++)
free(cut_copy_buffer[i]);
free(cut_copy_buffer);
if (!operation_is_copy) {
for (int i=1; i<=num; i++)
view->ungray(i);
}
}
// Allocate buffer
cut_copy_buffer = (char**)malloc(sizeof(char*) * (nselected+2));
// Add selected files to buffer and optionally grey icons (for cut effect)
int buf=0;
for (int i=1; i<=num; i++) {
if (view->selected(i)==1) {
cut_copy_buffer[buf] = strdup((char*)view->data(i));
if (!m_copy) view->gray(i);
buf++;
}
}
if (buf==0) { //nothing selected, use the focused item
int i=view->get_focus();
cut_copy_buffer[buf] = strdup((char*)view->data(i));
if (!m_copy) view->gray(i);
buf++;
nselected=1;
}
cut_copy_buffer[buf] = 0;
operation_is_copy = m_copy;
// Deselect all
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->label(tsprintf(_("Selected %d items for copying"), nselected));
else
statusbar->label(tsprintf(_("Selected %d items for moving"), nselected));
}
// Helper functions for paste:
// 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 with same info
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 (fl_filename_isdir(src) && fl_filename_isdir(dest))
return true;
int c = -1;
if (!overwrite_all && !skip_all) {
// here was choice_alert
c = fl_choice(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 (fl_filename_isdir(src))
unlink(dest);
// copy file over directory
// TODO: we will just skip this case, but ideally there should be
// another warning
if (fl_filename_isdir(dest))
return true;
}
if (fl_filename_isdir(src)) {
if (mkdir (dest, umask(0))==0)
return true; // success
// here was choice_alert
int q = fl_choice(tsprintf(_("Cannot create directory %s"),dest), _("&Stop"), _("&Continue"), 0);
if (q == 0) return true; else return false;
}
if ( !edelib::file_readable(src) ) {
// here was choice_alert
int q = fl_choice(tsprintf(_("Cannot read file %s"),src), _("&Stop"), _("&Continue"), 0);
if (q == 0) return true; else return false;
}
// edelib::file_writeable() returns false if dest doesn't exist
/* if ( !edelib::file_writeable(dest) )
{
// here was choice_alert
int q = fl_choice(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));
// fclose(fold);
// fclose(fnew);
return true;
}
// Recursive function that creates a list of all files to be copied, such that
// 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 (fl_filename_isdir(src)) {
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();
}
// Execute paste operation - this will copy or move files based on chosen
// operation
void do_paste() {
if (!cut_copy_buffer || !cut_copy_buffer[0]) return;
overwrite_all=false; skip_all=false;
// Moving files on same filesystem is trivial, just like rename
// We don't even need a progress bar
if (!operation_is_copy && is_on_same_fs(current_dir, cut_copy_buffer[0])) {
for (int i=0; cut_copy_buffer[i]; i++) {
char *newname;
asprintf(&newname, "%s%s", current_dir, fl_filename_name(cut_copy_buffer[i]));
if (edelib::file_exists(newname)) {
int c = -1;
if (!overwrite_all && !skip_all) {
// here was choice_alert
c = fl_choice(tsprintf(_("File already exists: %s. What to do?"), newname), _("&Overwrite"), _("Over&write all"), _("&Skip"), _("Skip &all")); // * means default
}
if (c==1) overwrite_all=true;
if (c==3) skip_all=true;
if (c==2 || skip_all) {
free(cut_copy_buffer[i]);
continue; // go to next entry
}
// At this point c==0 (Overwrite) or overwrite_all == true
unlink(newname);
}
rename(cut_copy_buffer[i],newname);
free(cut_copy_buffer[i]);
free(newname);
}
free(cut_copy_buffer);
cut_copy_buffer=0;
loaddir(current_dir); // Update display
return;
//
// Real file moving / copying using recursive algorithm
//
} else {
stop_now = false;
// Create srcdir string
char *srcdir = strdup(cut_copy_buffer[0]);
char *p = strrchr(srcdir,'/');
if (*(p+1) == '\0') { // slash is last - find one before
*p = '\0';
p = strrchr(srcdir,'/');
}
*(p+1) = '\0';
if (strcmp(srcdir,current_dir)==0) {
fl_alert(_("You cannot copy a file onto itself!"));
free(srcdir);
return;
}
// Draw progress dialog
Fl_Window* progress_window = new Fl_Window(350,150);
if (operation_is_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();
// How many items do we copy?
int copy_items=0;
for (; cut_copy_buffer[copy_items]; copy_items++);
// Set ProgressBar range accordingly
cut_copy_progress->minimum(0);
cut_copy_progress->maximum(copy_items);
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<copy_items; i++) {
// We must ensure that cut_copy_buffer is deallocated
// even if user clicked on Stop
if (!stop_now) expand_dirs(cut_copy_buffer[i], files_list, list_size, list_capacity);
free(cut_copy_buffer[i]);
cut_copy_progress->value(i+1);
Fl::check(); // check to see if user pressed Stop
}
free (cut_copy_buffer);
cut_copy_buffer=0;
// Now copying those files
if (!stop_now) {
char label[150];
char dest[PATH_MAX];
cut_copy_progress->minimum(0);
cut_copy_progress->maximum(list_size);
cut_copy_progress->value(0);
for (int i=0; i<list_size; i++) {
// Prepare dest filename
char *srcfile = files_list[i] + strlen(srcdir);
snprintf (dest, PATH_MAX, "%s%s", current_dir, srcfile);
if (operation_is_copy)
snprintf(label, 150, _("Copying %d of %d files to %s"), i, list_size, current_dir);
else
snprintf(label, 150, _("Moving %d of %d files to %s"), i, list_size, current_dir);
caption->label(label);
caption->redraw();
if (stop_now || !my_copy(files_list[i], dest))
break;
// Delete file after moving
if (!operation_is_copy) 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();
// Reload current dir
loaddir(current_dir);
// select the just pasted files and cleanup memory
for (int i=0; i<list_size; i++) {
char* tmp = strrchr(files_list[i],'/')+1;
// if (!tmp) { fprintf (stderr, "not found\n"); continue; }
// tmp++;
for (int j=1; j<=view->size(); j++)
if (strncmp(tmp, view->text(j), strlen(tmp))==0)
view->select(j,1);
free(files_list[i]);
}
free(files_list);
free(srcdir);
}
}
// Delete currently selected file(s) or directory(es)
void do_delete() {
// Count all selected item, 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((char*)view->data(i), files_list, list_size, list_capacity);
if (list_size==0) { //nothing selected, use the focused item
int i=view->get_focus();
expand_dirs((char*)view->data(i), files_list, list_size, list_capacity);
}
// Issue a warning
// here was choice_alert
int c;
if (list_size==1) {
char* k=strrchr(files_list[0],'/');
c = fl_choice(tsprintf(_("Are you sure that you want to delete file %s ?"), k+1), _("Do&n't delete"), _("&Delete"), 0);
} else
c = fl_choice(tsprintf(_("Are you sure that you want to delete %d files?"), list_size), _("Do&n't delete"), _("&Delete"), 0);
if (c!=1) return;
// delete
for (int i=0; i<list_size; i++)
edelib::file_remove(files_list[i]);
// loaddir(current_dir); - optimized
for (int i=1; i<=view->size(); i++)
if (view->selected(i)==1)
view->remove(i);
}
// Rename the file with focus to given name
void do_rename(const char* c) {
edelib::String oldname(current_dir);
edelib::String newname(current_dir);
int focus = view->get_focus();
edelib::String vline(view->text(focus)); // get filename
oldname += vline.substr(0,vline.find(view->column_char(),0));
newname += c;
if (edelib::file_exists(newname.c_str()))
fl_alert(tsprintf(_("Filename already in use: %s"), newname.c_str()));
// For some reason edelib::file_rename() always fails
// else if (!edelib::file_rename(oldname.c_str(),newname.c_str()))
// fl_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());
}
}
// Drag & drop callback - mostly copied from do_cut_copy()
void dnd_cb(const char* from,const char* to) {
fprintf (stderr, "PASTE from '%s', to '%s'\n",from,to);
return;
char *t = (char*)to;
if (!fl_filename_isdir(to))
t=current_dir;
/*
// Clear cut/copy buffer and optionally ungray the previously cutted icons
if (cut_copy_buffer) {
for (int i=0; cut_copy_buffer[i]; i++)
free(cut_copy_buffer[i]);
free(cut_copy_buffer);
if (!operation_is_copy) {
for (int i=1; i<=num; i++)
view->ungray(i);
}
}
// Allocate buffer
cut_copy_buffer = (char**)malloc(sizeof(char*) * (nselected+2));
// Add selected files to buffer
int buf=0;
for (int i=1; i<=num; i++)
if (view->selected(i)==1)
cut_copy_buffer[buf++] = strdup((char*)view->data(i));
// We don't know yet if this is cut or copy, so no need to gray anything
//
// Clear cut/copy buffer and optionally ungray the previously cutted icons
if (cut_copy_buffer) {
for (int i=0; cut_copy_buffer[i]; i++)
free(cut_copy_buffer[i]);
free(cut_copy_buffer);
if (!operation_is_copy) {
for (int i=1; i<=num; i++)
view->ungray(i);
}
}
int c = fl_choice(tsprintf(_("Do you want to copy or move file %s to directory %s?"), k+1), _("Do&n't delete"), _("&Delete"), 0);*/
}