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/* GNU ddrescue - Data recovery tool
Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Antonio Diaz Diaz.
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 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace {
std::string command_line;
void show_version()
{
std::printf( "%s %s\n", Program_name, PROGVERSION );
std::printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
std::printf( "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n"
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.\n" );
}
long long getnum( const char * const ptr, const int bs,
const long long min = LLONG_MIN + 1,
const long long max = LLONG_MAX )
{
errno = 0;
char *tail;
long long result = strtoll( ptr, &tail, 0 );
if( tail == ptr )
{
show_error( "Bad or missing numerical argument.", 0, true );
std::exit( 1 );
}
if( !errno && tail[0] )
{
int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
int exponent = 0;
bool bad_multiplier = false;
switch( tail[0] )
{
case ' ': break;
case 'b': if( bs > 0 ) { factor = bs; exponent = 1; }
else bad_multiplier = true;
break;
case 'Y': exponent = 8; break;
case 'Z': exponent = 7; break;
case 'E': exponent = 6; break;
case 'P': exponent = 5; break;
case 'T': exponent = 4; break;
case 'G': exponent = 3; break;
case 'M': exponent = 2; break;
case 'K': if( factor == 1024 ) exponent = 1; else bad_multiplier = true;
break;
case 'k': if( factor == 1000 ) exponent = 1; else bad_multiplier = true;
break;
default: bad_multiplier = true;
}
if( bad_multiplier )
{
show_error( "Bad multiplier in numerical argument.", 0, true );
std::exit( 1 );
}
for( int i = 0; i < exponent; ++i )
{
if( LLONG_MAX / factor >= llabs( result ) ) result *= factor;
else { errno = ERANGE; break; }
}
}
if( !errno && ( result < min || result > max ) ) errno = ERANGE;
if( errno )
{
show_error( "Numerical argument out of limits." );
std::exit( 1 );
}
return result;
}
void check_types( const std::string & types, const char * const opt_name )
{
bool error = false;
for( unsigned i = 0; i < types.size(); ++i )
if( !Sblock::isstatus( types[i] ) )
{ error = true; break; }
if( !types.size() || error )
{
char buf[80];
snprintf( buf, sizeof buf, "Invalid type for '%s' option.", opt_name );
show_error( buf, 0, true );
std::exit( 1 );
}
}
void set_mode( Mode & program_mode, const Mode new_mode )
{
if( program_mode != m_none && program_mode != new_mode )
{
show_error( "Only one operation can be specified.", 0, true );
std::exit( 1 );
}
program_mode = new_mode;
}
void set_name( const char ** domain_logfile_name, const char * new_name )
{
if( *domain_logfile_name )
{
show_error( "Only one domain logfile can be specified.", 0, true );
std::exit( 1 );
}
*domain_logfile_name = new_name;
}
} // end namespace
int verbosity = 0;
void show_error( const char * const msg, const int errcode, const bool help )
{
if( verbosity >= 0 )
{
if( msg && msg[0] )
{
std::fprintf( stderr, "%s: %s", program_name, msg );
if( errcode > 0 )
std::fprintf( stderr, ": %s", std::strerror( errcode ) );
std::fprintf( stderr, "\n" );
}
if( help )
std::fprintf( stderr, "Try '%s --help' for more information.\n",
invocation_name );
}
}
void internal_error( const char * const msg )
{
if( verbosity >= 0 )
std::fprintf( stderr, "%s: internal error: %s.\n", program_name, msg );
std::exit( 3 );
}
void write_logfile_header( FILE * const f )
{
std::fprintf( f, "# Rescue Logfile. Created by %s version %s\n",
Program_name, PROGVERSION );
std::fprintf( f, "# Command line: %s\n", command_line.c_str() );
}
const char * format_num( long long num, long long limit,
const int set_prefix )
{
const char * const si_prefix[8] =
{ "k", "M", "G", "T", "P", "E", "Z", "Y" };
const char * const binary_prefix[8] =
{ "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
static bool si = true;
static char buf[16];
if( set_prefix ) si = ( set_prefix > 0 );
const int factor = ( si ? 1000 : 1024 );
const char * const * prefix = ( si ? si_prefix : binary_prefix );
const char * p = "";
limit = std::max( 999LL, std::min( 999999LL, limit ) );
for( int i = 0; i < 8 && llabs( num ) > limit; ++i )
{ num /= factor; p = prefix[i]; }
snprintf( buf, sizeof buf, "%lld %s", num, p );
return buf;
}
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