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/***************************************************************************
dbget.cpp - Get time from database
-------------------
begin : Fri Jun 2 2000
copyright : (C) 2000 by Simon White
email : s_a_white@email.com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "SidDatabase.h"
#include "MD5/MD5.h"
const char *SidDatabase::ERR_DATABASE_CORRUPT = "SID DATABASE ERROR: Database seems to be corrupt.";
const char *SidDatabase::ERR_NO_DATABASE_LOADED = "SID DATABASE ERROR: Songlength database not loaded.";
const char *SidDatabase::ERR_NO_SELECTED_SONG = "SID DATABASE ERROR: No song selected for retrieving song length.";
const char *SidDatabase::ERR_MEM_ALLOC = "SID DATABASE ERROR: Memory Allocation Failure.";
const char *SidDatabase::ERR_UNABLE_TO_LOAD_DATABASE = "SID DATABASE ERROR: Unable to load the songlegnth database.";
SidDatabase::~SidDatabase ()
{
close ();
}
int_least32_t SidDatabase::parseTimeStamp(const char* arg)
{
/* Read in m:s format at most.
* Could use a system function if available.
*/
int_least32_t seconds = 0;
int passes = 2; // minutes, seconds
bool gotDigits = false;
while ( passes-- )
{
if ( isdigit(*arg) )
{
int t = atoi(arg);
seconds += t;
gotDigits = true;
}
while ( *arg && isdigit(*arg) )
{
++arg;
}
if ( *arg && *arg==':' )
{
seconds *= 60;
++arg;
}
}
// Handle -:-- time stamps and old 0:00 entries which
// need to be rounded up by one second.
if ( !gotDigits )
seconds = 0;
else if ( seconds==0 )
++seconds;
return seconds;
}
uint_least8_t SidDatabase::timesFound (char *str)
{
/* Try and determine the number of times read back.
* Used to check validility of times in database.
*/
uint_least8_t count = 0;
while (*str)
{
if (*str++ == ':')
count++;
}
return count;
}
int SidDatabase::open (const char *filename)
{
close ();
// @FIXME@: Libini should be changed
database = ini_open ((char *) filename, "r", ";");
if (!database)
{
errorString = ERR_UNABLE_TO_LOAD_DATABASE;
return -1;
}
return 0;
}
void SidDatabase::close ()
{
if (database)
ini_close (database);
}
int_least32_t SidDatabase::length (SidTuneMod &tune)
{
SidTuneInfo tuneInfo;
int_least32_t time = 0;
char timeStamp[10];
MD5 myMD5;
char digest[33];
uint_least16_t selectedSong = 0;
if (!database)
{
errorString = ERR_NO_DATABASE_LOADED;
return -1;
}
tune.getInfo(tuneInfo);
selectedSong = tuneInfo.currentSong;
if (!selectedSong)
{
errorString = ERR_NO_SELECTED_SONG;
return -1;
}
// Restart fingerprint
myMD5.reset();
tune.createMD5(myMD5);
myMD5.finish();
// Construct fingerprint.
digest[0] = '\0';
for (int di = 0; di < 16; ++di)
sprintf (digest, "%s%02x", digest, (int) myMD5.getDigest()[di]);
// Now set up array access
if (ini_listDelims (database, " ") == -1)
{
errorString = ERR_MEM_ALLOC;
return -1;
}
// Read Time (and check times before hand)
(void) ini_locateHeading (database, "Database");
(void) ini_locateKey (database, digest);
// If length return is -1 then no entry found in database
if (ini_dataLength (database) != -1)
{
selectedSong = 0;
while (selectedSong < tuneInfo.currentSong)
{
selectedSong++;
if (ini_readString (database, timeStamp, sizeof (timeStamp)) == -1)
{ // No time found
errorString = ERR_DATABASE_CORRUPT;
return -1;
}
// Validate Time
if (timesFound (timeStamp) != 1)
{
errorString = ERR_DATABASE_CORRUPT;
return -1;
}
}
// Parse timestamp
time = parseTimeStamp (timeStamp);
}
return time;
}
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