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Meccanismo di protezione per i files sovrascritti

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git-svn-id: svn://10.65.10.50/trunk@588 c028cbd2-c16b-5b4b-a496-9718f37d4682
This commit is contained in:
alex 1994-11-10 14:15:41 +00:00
parent 8ca7b5aa46
commit a69693ba65
1 changed files with 66 additions and 6 deletions
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72
include/isam.cpp
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@ -587,6 +587,52 @@ int TBaseisamfile::_open(unsigned int mode)
_hfhd.len() = sizeof(TRecnotype);
_hfhd.base() = 0;
}
if (err == NOERR)
{
isdef * fh = filehnd();
const TRecnotype nitems = fh->i.Base[0].PEOX;
if (fh->d->EOX != nitems)
{
CHECKD(getkey() == 1, "La chiave corrente non e' 1 ma ", getkey());
TFilename fn = filename();
fn = fn.name();
if (yesno_box("La dimensione dell' archivio %s e' errata. Cerco di recuperarlo ?", (const char *) fn))
{
TDir d;
TString mess(80);
{
mess.format("Ricostruzione archivio %s : I Fase", (const char*) fn);
TProgind p(nitems ? nitems : 1, mess, TRUE, TRUE, 70);
d.get(num(), _lock, _nordir, _sysdirop);
d.eod() = fh->d->EOD = nitems;
d.eox() = fh->d->EOX = nitems;
d.put(num(), _nordir, _sysdirop);
for (TRecnotype r = 1; r <= nitems; r++)
{
p.addstatus(1);
CRead(&fh->f, curr().string(), r, _nolock);
curr().discard();
CWrite(&fh->f, curr().string(), r, _nolock);
}
}
mess.format("Ricostruzione archivio %s : II Fase", (const char*) fn);
TProgind p(items() ? items() : 1, mess, TRUE, TRUE, 70);
for (first(); good(); next())
{
p.addstatus(1);
curr().recall();
rewrite();
}
message_box("L'archivio %s deve essere compattato", (const char *) fn);
}
else
fatal_box("L'archivio %s deve essere corretto prima di utilizzarlo", (const char *) fn);
}
}
_recno = -1L;
_current->_i = filehnd();
setstatus(err);
@ -894,11 +940,13 @@ int TSystemisamfile::update(TTrec& newrec, bool vis)
{
if (filehnd() != NULL)
fatal_box("Can't update description for open file %s", filename());
TDir dir;
dir.get(num(), _lock, _nordir, _sysdirop);
const char p = *dir.name();
const bool toconvert = ((strcmp(prefhndl->name(), "com") == 0) ? p == '%' : p != '%');
const bool incom = strcmp(prefhndl->name(), "com") == 0;
const bool toconvert = (incom ? p == '%' : p != '%');
int err = NOERR;
TTrec oldrec;
@ -907,8 +955,16 @@ int TSystemisamfile::update(TTrec& newrec, bool vis)
const bool lcf = getlcf(prefhndl->filelevel());
if (!lcf && newrec == oldrec) return NOERR;
const TRecnotype nitems = dir.eod();
const unsigned int lenr = newrec.len();
if (!toconvert && dir.eox() > 0L)
{
dir.eod() = 0L;
dir.eox() = 0L;
}
if (toconvert && dir.eox() > 0L)
{
TRecnotype ni = 0L;
@ -1036,7 +1092,7 @@ int TSystemisamfile::load(const char* from, char fs, char fd, char rs, bool vis)
f.equal();
const long level = atol(f.line());
if (level > stdlevel)
error_box("L' archivio %s e' stato generato con gli archivi di livello %ld%/%ld.\n Il livello attuale e' %ld/%ld.\n Convertire gli archivi e ripetere l' operazione.", from, level / 100, level % 100, stdlevel / 100, stdlevel % 100);
error_box("L' archivio %s e' stato generato con gli archivi di livello %ld%/%ld.\\n Il livello attuale e' %ld/%ld.\\n Convertire gli archivi e ripetere l' operazione.", from, level / 100, level % 100, stdlevel / 100, stdlevel % 100);
lcf = getlcf(level);
nflds = 0;
TToken_string s2(f.line());
@ -1079,20 +1135,22 @@ int TSystemisamfile::load(const char* from, char fs, char fd, char rs, bool vis)
{
error_box("Formato dei dati non valido");
close();
return 1;
err = 1;
setstatus(err);
return err;
}
if (fd) sfd << fd;
int last = NOERR;
s1.format("Imp. archivio %s\n%6ld records %6ld errori - %3d", filename(), r, e, last);
s1.format("Imp. archivio %s\\n%6ld records %6ld errori - %3d", filename(), r, e, last);
TProgind p(nitems, s1, TRUE, TRUE, 70);
s = f.line();
while (s.not_empty() && !p.iscancelled())
{
if ((r + e) % 50 == 0)
{
s1.format("Imp. archivio %s\n%6ld rec. %6ld errori - %3d", filename(), r, e, last);
s1.format("Imp. archivio %s\\n%6ld records %6ld errori - %3d", filename(), r, e, last);
p.set_text(s1);
}
p.setstatus(nread + 1);
@ -1131,9 +1189,10 @@ int TSystemisamfile::load(const char* from, char fs, char fd, char rs, bool vis)
}
s = f.line();
}
s1.format("Imp. archivio %s : %6ld rec. %6ld errori - %3d", filename(), r, e, last);
s1.format("Imp. archivio %s\\n%6ld records %6ld errori - %3d", filename(), r, e, last);
p.set_text(s1);
close();
setstatus(err);
return err;
}
@ -1213,6 +1272,7 @@ int TSystemisamfile::dump(const char* to, int nkey, char fs, char fd, char rs, b
{
for (i = 0; i < nitems && !p.iscancelled(); i++)
{
zero();
p.setstatus(i + 1);
readat(i + 1);
s="";