Quelle DepTable.C Sprache: C

/* This file is part of
* ======================================================
*
*           LyX, The Document Processor
*      Copyright (C) 1995 Matthias Ettrich
*           Copyright (C) 1995-1998 The LyX Team.
*
*           This file is Copyright (C) 1996-1998
*           Lars Gullik Bjønnes
*
* ======================================================
*/

#include <config.h>

#include "DepTable.h"
#include "lyxlib.h"
#include "filetools.h"

DepTable::DepTable()
{
new_sum = 0;
old_sum = 0;
next = NULL;
}

DepTable::DepTable(LString const &f,
     unsigned long one,
     unsigned long two)
{
file = f; new_sum = 0; old_sum = 0;
if (one != 0)
  new_sum = one;
if (two != 0)
  old_sum = two;
next = NULL;
}

void DepTable::insert(LString const &f,
        unsigned long one,
        unsigned long two)
{
if (f == file) return;
if (next)
  next->insert(f, one, two);
else
  next = new DepTable(f, one, two);
}


void DepTable::update()
{
if (!file.empty()) {
  old_sum = new_sum;
  new_sum = lyxsum(file.c_str());
  //lyxerr.debug("update: " + file + " " +
  //       int(new_sum) + " " + int(old_sum));
}
if (next) next->update();
}

bool DepTable::sumchange()
{
bool ret = false;

if (!file.empty()) {
  if (old_sum != new_sum) ret = true;
}
if (!ret && next) ret = next->sumchange();

return ret;
}

bool DepTable::haschanged(LString const &fil)
{
bool ret = false;

if (!fil.empty() && !file.empty() && fil == file) {
  if (new_sum != old_sum && new_sum != 0)
   ret = true;
}
if (!ret && next) ret = next->haschanged(fil);
return ret;
}

void DepTable::write(LString const&f)
{
FilePtr fp(f, FilePtr::write);
if (fp() && next) next->write(fp());
}

void DepTable::read(LString const &f)
{
FilePtr fp(f, FilePtr::read);
if (fp()) { // file opened
  char nome[256];
  unsigned long one = 0;
  unsigned long two = 0;
  // scan the file line by line
  // return true if the two numbers on the lin eis different
  int ret = 0;
  while (!feof(fp())) {
   ret = fscanf(fp(), "%s %lu %lu",
         nome, &one, &two);
   if (ret !=3) continue;
   //lyxerr.debug("redep(" + int(ret) + ": " +
   //       nome + ", " + int(one) +
   //       " " + int(two));
   insert(LString(nome), one, two);
  }
}
}

void DepTable::write(FILE *f)
{
//lyxerr.debug("todep: " + file + " " +
//       int(new_sum) + " " + int(old_sum));
fprintf(f, "%s %lu %lu\n", file.c_str(),
  new_sum, old_sum);
if (next)
  next->write(f);
}

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