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/* This file is part of
* ======================================================
*
* LyX, The Document Word Processor
*
* Copyright (C) 1995 Matthias Ettrich
* Copyright (C) 1995-1998 The LyX Team.
*
* This file is Copyleft (C) 1996-1998
* Lars Gullik Bjønnes
*
*======================================================
*/
#ifdef __GNUG__
#pragma implementation
#endif
#include <config.h>
#include <sys/types.h>
#include <utime.h>
#include "bufferlist.h"
#include "lyx_main.h"
#include "minibuffer.h"
#include "FileInfo.h"
#include "filetools.h"
#include "lyx_gui_misc.h"
#include "lastfiles.h"
#include "error.h"
#include "lyxrc.h"
#include "lyxscreen.h"
#include "lyxtext.h"
#include "lyx_cb.h"
#include "gettext.h"
// $Id: bufferlist.C,v 1.4 1998/09/17 22:16:05 larsbj Exp $
#if !defined(lint) && !defined(WITH_WARNINGS)
static char vcid[] = "$Id: bufferlist.C,v 1.4 1998/09/17 22:16:05 larsbj Exp $";
#endif /* lint */
extern BufferView *current_view;
extern MiniBuffer *minibuffer;
extern void SmallUpdate(signed char);
extern void BeforeChange();
extern int RunLinuxDoc(int, LString const &);
//
// Class BufferStorage
//
BufferStorage::BufferStorage()
{
// Initialize the buffer array
for (int i=NUMBER_OF_BUFFERS-1; i >=0; i--) {
buffer[i] = 0;
}
}
bool BufferStorage::isEmpty()
{
for (int i=NUMBER_OF_BUFFERS-1; i >=0; i--) {
if (buffer[i]) return false;
}
return true;
}
void BufferStorage::release(Buffer* buf)
{
int i=0;
for (i=0; i<NUMBER_OF_BUFFERS; i++)
if (buffer[i] == buf) break;
Buffer *tmpbuf = buffer[i];
buffer[i] = 0;
delete tmpbuf;
}
Buffer* BufferStorage::newBuffer(LString const &s,
LyXRC *lyxrc,
bool ronly)
{
int i=0;
while (i < NUMBER_OF_BUFFERS - 1
&& buffer[i]) i++;
buffer[i] = new Buffer(s, lyxrc, ronly);
buffer[i]->params.useClassDefaults();
lyxerr.debug(LString("Assigning to buffer ") + i, Error::ANY);
return buffer[i];
}
//
// Class BufferStrorage_Iter
//
Buffer* BufferStorage_Iter::operator() ()
{
int i=0;
for (i=index; i < BufferStorage::NUMBER_OF_BUFFERS; i++) {
if (cs->buffer[i]) {
index = i+1;
return cs->buffer[i];
}
}
return 0;
}
Buffer* BufferStorage_Iter::operator[] (int a)
{
// a is >=1
if (a<=0) return 0;
int i=0;
while (a--) {
while(!cs->buffer[i++]);
}
if (i-1 < BufferStorage::NUMBER_OF_BUFFERS)
return cs->buffer[i-1];
return 0;
}
//
// Class BufferList
//
BufferList::BufferList()
{
_state = BufferList::OK;
}
BufferList::~BufferList()
{
// I am sure something should be done here too.
}
bool BufferList::isEmpty()
{
return bstore.isEmpty();
}
extern void MenuWrite(Buffer*);
bool BufferList::QwriteAll()
{
bool askMoreConfirmation = false;
LString unsaved;
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (!b->isLyxClean()) {
switch(AskConfirmation(_("Changes in document:"),
MakeDisplayPath(b->filename,50),
_("Save document?"))) {
case 1: // Yes
MenuWrite(b);
break;
case 2: // No
askMoreConfirmation = true;
unsaved += MakeDisplayPath(b->filename,50);
unsaved += "\n";
break;
case 3: // Cancel
return false;
}
}
}
if (askMoreConfirmation &&
lyxrc->exit_confirmation &&
!AskQuestion(_("Some documents were not saved:"),
unsaved, _("Exit anyway?"))) {
return false;
}
return true;
}
// Should probably be moved to somewhere else: BufferView? LyXView?
bool BufferList::write(Buffer *buf, bool makeBackup)
{
minibuffer->Set(_("Saving document"),
MakeDisplayPath(buf->filename),"...");
// We don't need autosaves in the immediate future. (Asger)
buf->resetAutosaveTimers();
// make a backup
if (makeBackup) {
LString s = buf->filename + '~';
// Rename is the wrong way of making a backup,
// this is the correct way.
/* truss cp fil fil2:
lstat("LyXVC3.lyx", 0xEFFFF898) Err#2 ENOENT
stat("LyXVC.lyx", 0xEFFFF688) = 0
open("LyXVC.lyx", O_RDONLY) = 3
open("LyXVC3.lyx", O_WRONLY|O_CREAT|O_TRUNC, 0600) = 4
fstat(4, 0xEFFFF508) = 0
fstat(3, 0xEFFFF508) = 0
read(3, " # T h i s f i l e w".., 8192) = 5579
write(4, " # T h i s f i l e w".., 5579) = 5579
read(3, 0xEFFFD4A0, 8192) = 0
close(4) = 0
close(3) = 0
chmod("LyXVC3.lyx", 0100644) = 0
lseek(0, 0, SEEK_CUR) = 46440
_exit(0)
*/
// Should proabaly have some more error checking here.
// Should be cleaned up in 0.13, at least a bit.
// Doing it this way, also makes the inodes stay the same.
// This is still not a very good solution, in particular we
// might loose the owner of the backup.
FileInfo finfo(buf->filename);
if (finfo.exist()) {
mode_t fmode = finfo.getMode();
struct utimbuf *times =
(struct utimbuf*)new char[sizeof(struct utimbuf)];
times->actime = finfo.getAccessTime();
times->modtime = finfo.getModificationTime();
long blksize = finfo.getBlockSize();
lyxerr.debug(LString("BlockSize: ") + int(blksize));
FilePtr fin(buf->filename,FilePtr::read);
FilePtr fout(s,FilePtr::truncate);
if (fin() && fout()) {
char * cbuf = new char[blksize+1];
size_t c_read = 0;
size_t c_write = 0;
do {
c_read = fread(cbuf, 1, blksize, fin);
if (c_read != 0)
c_write =
fwrite(cbuf, 1, c_read, fout);
} while (c_read);
fin.close();
fout.close();
chmod(s.c_str(), fmode);
if (utime(s.c_str(), times)) {
lyxerr.print("utime error.");
}
delete [] cbuf;
} else {
lyxerr.print("LyX was not able to make backupcopy. Beware.");
}
delete[] times;
}
}
if (buf->writeFile(buf->filename,false)) {
buf->markLyxClean();
minibuffer->Set(_("Document saved as"),
MakeDisplayPath(buf->filename));
// now delete the autosavefile
LString a = OnlyPath(buf->filename);
a += '#';
a += OnlyFilename(buf->filename);
a += '#';
FileInfo fileinfo(a);
if (fileinfo.exist()) {
if (remove(a.c_str()) != 0) {
WriteFSAlert(_("Could not delete "
"auto-save file!"), a);
}
}
} else {
// Saving failed, so backup is not backup
if (makeBackup) {
LString s = buf->filename + '~';
rename(s.c_str(), buf->filename.c_str());
}
minibuffer->Set(_("Save failed!"));
return false;
}
return true;
}
void BufferList::closeAll()
{
_state = BufferList::CLOSING;
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
close(b);
}
_state = BufferList::OK;
}
void BufferList::resize()
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
b->resize();
}
}
bool BufferList::close(Buffer *buf)
{
buf->InsetUnlock();
if (buf->paragraph && !buf->isLyxClean() && !quitting) {
ProhibitInput();
switch(AskConfirmation(_("Changes in document:"),
MakeDisplayPath(buf->filename,50),
_("Save document?"))){
case 1: // Yes
if (write(buf)) {
lastfiles->newFile(buf->filename);
} else {
AllowInput();
return false;
}
break;
case 3: // Cancel
AllowInput();
return false;
}
AllowInput();
}
bstore.release(buf);
return true;
}
void BufferList::makePup(int pup)
/* This should be changed to return a char const *const
in the same way as for lastfiles.[hC]
*/
{
int ant=0;
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
LString relbuf = MakeDisplayPath(b->filename,30);
fl_addtopup(pup, relbuf.c_str());
ant++;
}
if (ant == 0) fl_addtopup(pup,_("No Documents Open!%t"));
}
Buffer* BufferList::first()
{
BufferStorage_Iter biter(bstore);
return biter();
}
Buffer* BufferList::getBuffer(int choice)
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
b = biter[choice];
// Be careful, this could be 0.
return b;
}
void BufferList::updateInset(Inset *inset, bool mark_dirty)
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (b->text && b->text->UpdateInset(inset)) {
if (mark_dirty)
b->markDirty();
break;
}
}
}
int BufferList::unlockInset(UpdatableInset *inset)
{
if (!inset) return 1;
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (b->the_locking_inset == inset) {
b->InsetUnlock();
return 0;
}
}
return 1;
}
void BufferList::updateIncludedTeXfiles(LString const & mastertmpdir)
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (!b->isDepClean(mastertmpdir)) {
LString writefile = mastertmpdir;
writefile += '/';
writefile += ChangeExtension(b->getFileName(), ".tex", true);
b->makeLaTeXFile(writefile,mastertmpdir,false,true);
b->markDepClean(mastertmpdir);
}
}
}
void BufferList::emergencyWriteAll()
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (!b->isLyxClean()) {
bool madeit=false;
lyxerr.print(_("lyx: Attempting to save"
" document ")
+ b->filename
+ _(" as..."));
for (int i=0; i<3 && !madeit; i++) {
LString s;
// We try to save three places:
// 1) Same place as document.
// 2) In HOME directory.
// 3) In "/tmp" directory.
if (i==0) {
s = b->filename;
} else if (i==1) {
s = AddName(getEnvPath("HOME"),
b->filename);
} else { // MakeAbsPath to prepend the current drive letter on OS/2
s = AddName(MakeAbsPath("/tmp/"),
b->filename);
}
s += ".emergency";
lyxerr.print(LString(" ") + (i+1) + ") " + s);
if (b->writeFile(s,true)) {
b->markLyxClean();
lyxerr.print(_(" Save seems successful. Phew."));
madeit = true;
} else if (i != 2) {
lyxerr.print(_(" Save failed! Trying..."));
} else {
lyxerr.print(_(" Save failed! Bummer. Document is lost."));
}
}
}
}
}
Buffer* BufferList::readFile(LString const & s, bool ronly)
{
Buffer *b = bstore.newBuffer(s, lyxrc, ronly);
LString ts = s;
LString e = OnlyPath(s);
LString a = e;
// File information about normal file
FileInfo fileInfo2(s);
// Check if emergency save file exists and is newer.
e += OnlyFilename(s) + ".emergency";
FileInfo fileInfoE(e);
bool use_emergency = false;
if (fileInfoE.exist() && fileInfo2.exist()) {
if (fileInfoE.getModificationTime()
> fileInfo2.getModificationTime()) {
if (AskQuestion(_("An emergency save of this document exists!"),
MakeDisplayPath(s,50),
_("Try to load that instead?"))) {
ts = e;
// the file is not saved if we load the
// emergency file.
b->markDirty();
use_emergency = true;
}
}
}
if (!use_emergency) {
// Now check if autosave file is newer.
a += '#';
a += OnlyFilename(s);
a += '#';
FileInfo fileInfoA(a);
if (fileInfoA.exist() && fileInfo2.exist()) {
if (fileInfoA.getModificationTime()
> fileInfo2.getModificationTime()) {
if (AskQuestion(_("Autosave file is newer."),
MakeDisplayPath(s,50),
_("Load that one instead?"))) {
ts = a;
// the file is not saved if we load the
// autosave file.
b->markDirty();
}
}
}
}
// not sure if this is the correct place to begin LyXLex
LyXLex lex(NULL, 0);
lex.setFile(ts);
if (b->readFile(lex))
return b;
else {
bstore.release(b);
return 0;
}
}
bool BufferList::exists(LString const & s)
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (b->filename == s)
return true;
}
return false;
}
Buffer* BufferList::getBuffer(LString const &s)
{
BufferStorage_Iter biter(bstore);
Buffer *b=0;
while ((b=biter())) {
if (b->filename ==s)
return b;
}
return 0;
}
Buffer* BufferList::newFile(LString const & name, LString tname)
{
/* get a free buffer */
Buffer *b = bstore.newBuffer(name, lyxrc);
// use defaults.lyx as a default template if it exists.
if (tname.empty()) {
tname = LibFileSearch("templates", "defaults.lyx");
}
if (!tname.empty() && IsLyXFilename(tname)){
bool templateok = false;
LyXLex lex(NULL,0);
lex.setFile(tname);
if (lex.IsOK()) {
if (b->readFile(lex)) {
templateok = true;
}
}
if (!templateok) {
WriteAlert(_("Error!"),_("Unable to open template"),
MakeDisplayPath(tname));
// no template, start with empty buffer
b->paragraph = new LyXParagraph();
}
}
else { // start with empty buffer
b->paragraph = new LyXParagraph();
}
b->markDirty();
b->setReadonly(false);
return b;
}
Buffer* BufferList::loadLyXFile(LString const & filename, bool tolastfiles)
{
// make sure our path is absolute
LString s = MakeAbsPath(filename);
// Is this done too early?
// Is it LinuxDoc?
if (IsSGMLFilename(s)) {
FileInfo fi(s);
if (fi.exist() && fi.readable()) {
if (!RunLinuxDoc(-1, s)) {
s = ChangeExtension (s, ".lyx", false);
} else { // sgml2lyx failed
WriteAlert(_("Error!"),
_("Could not convert file"),s);
return 0;
}
} else {
// just change the extension and it will be
// handled like a regular lyx file that does
// not exist.
s = ChangeExtension(s, ".lyx", false);
}
}
// file already open?
if (exists(s)) {
if (AskQuestion(_("Document is already open:"),
MakeDisplayPath(s,50),
_("Do you want to reload that document?"))) {
// Reload is accomplished by closing and then loading
if (!close(getBuffer(s))) {
return 0;
}
// Fall through to new load. (Asger)
} else {
// Here, we pretend that we just loaded the
// open document
return getBuffer(s);
}
}
Buffer *b=0;
bool ro = false;
switch (IsFileWriteable(s)) {
case 0:
minibuffer->Set(_("File `")+MakeDisplayPath(s,50)+
_("' is read-only."));
ro = true;
// Fall through
case 1:
b=readFile(s, ro);
if (b) {
b->lyxvc.file_found_hook(s);
}
break; //fine- it's r/w
case -1:
// Here we probably should run
if (LyXVC::file_not_found_hook(s)) {
// Ask if the file should be checked out for
// viewing/editing, if so: load it.
lyxerr.print("Do you want to checkout?");
}
if (AskQuestion(_("Cannot open specified file:"),
MakeDisplayPath(s,50),
_("Create new document with this name?")))
{
// Find a free buffer
b = newFile(s,LString());
}
break;
}
if (b && tolastfiles)
lastfiles->newFile(b->getFileName());
return b;
}
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