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gparted/src/Utils.cc

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/* Copyright (C) 2004 Bart 'plors' Hakvoort
* Copyright (C) 2008, 2009, 2010, 2011 Curtis Gedak
*
* 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.
*
* 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "../include/Utils.h"
#include "../include/GParted_Core.h"
#include "../include/PipeCapture.h"
#include <sstream>
#include <fstream>
#include <iomanip>
#ifdef HAVE_GLIB_REGEX
#include <glibmm/regex.h>
#else
#include <regex.h>
#endif
#include <locale.h>
#include <uuid/uuid.h>
#include <cerrno>
#include <sys/statvfs.h>
#include <gtkmm/main.h>
#include <fcntl.h>
namespace GParted
{
Sector Utils::round( double double_value )
{
return static_cast<Sector>( double_value + 0.5 ) ;
}
Gtk::Label * Utils::mk_label( const Glib::ustring & text,
bool use_markup,
Gtk::AlignmentEnum x_align,
Gtk::AlignmentEnum y_align,
bool wrap,
bool selectable,
const Glib::ustring & text_color )
{
Gtk::Label * label = manage( new Gtk::Label( text, x_align, y_align ) ) ;
label ->set_use_markup( use_markup ) ;
label ->set_line_wrap( wrap ) ;
label ->set_selectable( selectable ) ;
if ( text_color != "black" )
{
Gdk::Color color( text_color ) ;
label ->modify_fg( label ->get_state(), color ) ;
}
return label ;
}
Glib::ustring Utils::num_to_str( Sector number )
{
std::stringstream ss ;
ss << number ;
return ss .str() ;
}
//use palette from http://developer.gnome.org/hig-book/2.32/design-color.html.en as a starting point.
Glib::ustring Utils::get_color( FILESYSTEM filesystem )
{
switch( filesystem )
{
case FS_UNALLOCATED : return "#A9A9A9" ; // ~ medium grey
case FS_UNKNOWN : return "#000000" ; //black
case FS_UNFORMATTED : return "#000000" ; //black
case FS_CLEARED : return "#000000" ; //black
case FS_EXTENDED : return "#7DFCFE" ; // ~ light blue
case FS_BTRFS : return "#FF9955" ; //orange
case FS_EXT2 : return "#9DB8D2" ; //blue hilight
case FS_EXT3 : return "#7590AE" ; //blue medium
case FS_EXT4 : return "#4B6983" ; //blue dark
case FS_LINUX_SWAP : return "#C1665A" ; //red medium
case FS_F2FS : return "#DF421E" ; //accent red
case FS_FAT16 : return "#00FF00" ; //green
case FS_FAT32 : return "#18D918" ; // ~ medium green
case FS_EXFAT : return "#2E8B57" ; // ~ sea green
case FS_NILFS2 : return "#826647" ; //face skin dark
case FS_NTFS : return "#42E5AC" ; // ~ light turquoise
case FS_REISERFS : return "#ADA7C8" ; //purple hilight
case FS_REISER4 : return "#887FA3" ; //purple medium
case FS_XFS : return "#EED680" ; //accent yellow
case FS_JFS : return "#E0C39E" ; //face skin medium
case FS_HFS : return "#E0B6AF" ; //red hilight
case FS_HFSPLUS : return "#C0A39E" ; // ~ serene red
case FS_UFS : return "#D1940C" ; //accent yellow dark
case FS_USED : return "#F8F8BA" ; // ~ light tan yellow
case FS_UNUSED : return "#FFFFFF" ; //white
case FS_LVM2_PV : return "#CC9966" ; // ~ medium brown
case FS_LUKS : return "#625B81" ; //purple dark
default : return "#000000" ;
}
}
Glib::RefPtr<Gdk::Pixbuf> Utils::get_color_as_pixbuf( FILESYSTEM filesystem, int width, int height )
{
Glib::RefPtr<Gdk::Pixbuf> pixbuf = Gdk::Pixbuf::create( Gdk::COLORSPACE_RGB, false, 8, width, height ) ;
if ( pixbuf )
{
std::stringstream hex( get_color( filesystem ) .substr( 1 ) + "00" ) ;
unsigned long dec ;
hex >> std::hex >> dec ;
pixbuf ->fill( dec ) ;
}
return pixbuf ;
}
int Utils::get_filesystem_label_maxlength( FILESYSTEM filesystem )
{
switch( filesystem )
{
//All file systems commented out are not supported for labelling
// by either the new partition or label partition operations.
case FS_BTRFS : return 255 ;
//case FS_EXFAT : return ;
case FS_EXT2 : return 16 ;
case FS_EXT3 : return 16 ;
case FS_EXT4 : return 16 ;
//mkfs.f2fs says that it can create file systems with labels up to 512
// characters, but it core dumps with labels of 29 characters or larger!
// Also blkid only correctly displays labels up to 19 characters.
// (Suspect it is all part of a memory corruption bug in mkfs.f2fs).
case FS_F2FS : return 19 ;
case FS_FAT16 : return 11 ;
case FS_FAT32 : return 11 ;
//mkfs.hfsplus can create hfs and hfs+ file systems with labels up to 255
// characters. However there is no specific tool to read the labels and
// blkid, the only tool currently available, only display the first 27
// and 63 character respectively.
// Reference:
// util-linux-2.20.1/libblkid/src/superblocks/hfs.c:struct hfs_mdb
case FS_HFS : return 27 ;
case FS_HFSPLUS : return 63 ;
//mkfs.jfs and jfs_tune can create and update labels to 16 characters but
// only displays the first 11 characters. This is because version 1 jfs
// file systems only have an 11 character field for the label but version
// 2 jfs has extra fields containing a 16 character label. mkfs.jfs
// writes the extra fields containing the 16 character label, but then
// sets it to version 1 jfs. It does this to be backwardly compatible
// with jfs before 1.0.18, released May 2002. Blkid does display the
// full 16 character label by just ignoring the file system version.
// As using jfs_tune to get the label stick with an 11 character limit.
// References:
// jfsutils-1.1.15/tune/tune.c:main()
// jfsutils-1.1.15/mkfs/mkfs.c:create_aggregate()
// http://jfs.cvs.sourceforge.net/viewvc/jfs/jfsutils/NEWS?revision=HEAD
case FS_JFS : return 11 ;
case FS_LINUX_SWAP : return 15 ;
//case FS_LVM2_PV : return ;
case FS_NILFS2 : return 80 ;
case FS_NTFS : return 128 ;
case FS_REISER4 : return 16 ;
case FS_REISERFS : return 16 ;
//case FS_UFS : return ;
case FS_XFS : return 12 ;
default : return 30 ;
}
}
Glib::ustring Utils::get_filesystem_string( FILESYSTEM filesystem )
{
switch( filesystem )
{
case FS_UNALLOCATED : return
/* TO TRANSLATORS: unallocated
* means that this space on the disk device does
* not contain a recognized file system, and is in
* other words unallocated.
*/
_("unallocated") ;
case FS_UNKNOWN : return
/* TO TRANSLATORS: unknown
* means that this space within this partition does
* not contain a file system known to GParted, and
* is in other words unknown.
*/
_("unknown") ;
case FS_UNFORMATTED : return
/* TO TRANSLATORS: unformatted
* means that the space within this partition will not
* be formatted with a known file system by GParted.
*/
_("unformatted") ;
case FS_CLEARED : return
/* TO TRANSLATORS: cleared
* means that all file system signatures in the partition
* will be cleared by GParted.
*/
_("cleared") ;
case FS_EXTENDED : return "extended" ;
case FS_BTRFS : return "btrfs" ;
case FS_EXT2 : return "ext2" ;
case FS_EXT3 : return "ext3" ;
case FS_EXT4 : return "ext4" ;
case FS_LINUX_SWAP : return "linux-swap" ;
case FS_F2FS : return "f2fs" ;
case FS_FAT16 : return "fat16" ;
case FS_FAT32 : return "fat32" ;
case FS_EXFAT : return "exfat" ;
case FS_NILFS2 : return "nilfs2" ;
case FS_NTFS : return "ntfs" ;
case FS_REISERFS : return "reiserfs" ;
case FS_REISER4 : return "reiser4" ;
case FS_XFS : return "xfs" ;
case FS_JFS : return "jfs" ;
case FS_HFS : return "hfs" ;
case FS_HFSPLUS : return "hfs+" ;
case FS_UFS : return "ufs" ;
case FS_USED : return _("used") ;
case FS_UNUSED : return _("unused") ;
case FS_LVM2_PV : return "lvm2 pv" ;
case FS_LUKS : return "crypt-luks" ;
default : return "" ;
}
}
Glib::ustring Utils::get_filesystem_software( FILESYSTEM filesystem )
{
switch( filesystem )
{
case FS_BTRFS : return "btrfs-tools" ;
case FS_EXT2 : return "e2fsprogs" ;
case FS_EXT3 : return "e2fsprogs" ;
case FS_EXT4 : return "e2fsprogs v1.41+" ;
case FS_F2FS : return "f2fs-tools" ;
case FS_FAT16 : return "dosfstools, mtools" ;
case FS_FAT32 : return "dosfstools, mtools" ;
case FS_HFS : return "hfsutils" ;
case FS_HFSPLUS : return "hfsprogs" ;
case FS_JFS : return "jfsutils" ;
case FS_LINUX_SWAP : return "util-linux" ;
case FS_LVM2_PV : return "lvm2" ;
case FS_NILFS2 : return "nilfs-utils" ;
case FS_NTFS : return "ntfsprogs / ntfs-3g" ;
case FS_REISER4 : return "reiser4progs" ;
case FS_REISERFS : return "reiserfsprogs" ;
case FS_UFS : return "" ;
case FS_XFS : return "xfsprogs, xfsdump" ;
default : return "" ;
}
}
//Report whether or not the kernel supports a particular file system
bool Utils::kernel_supports_fs( const Glib::ustring & fs )
{
bool fs_supported = false ;
//Read /proc/filesystems and check for the file system name.
// Will succeed for compiled in drivers and already loaded
// moduler drivers. If not found, try loading the driver
// as a module and re-checking /proc/filesystems.
std::ifstream input ;
std::string line ;
input .open( "/proc/filesystems" ) ;
if ( input )
{
while ( input >> line )
if ( line == fs )
{
fs_supported = true ;
break ;
}
input .close() ;
}
if ( fs_supported )
return true ;
Glib::ustring output, error ;
execute_command( "modprobe " + fs, output, error, true );
input .open( "/proc/filesystems" ) ;
if ( input )
{
while ( input >> line )
if ( line == fs )
{
fs_supported = true ;
break ;
}
input .close() ;
}
return fs_supported ;
}
//Report if kernel version is >= (major, minor, patch)
bool Utils::kernel_version_at_least( int major_ver, int minor_ver, int patch_ver )
{
int actual_major_ver, actual_minor_ver, actual_patch_ver ;
if ( ! get_kernel_version( actual_major_ver, actual_minor_ver, actual_patch_ver ) )
return false ;
bool result = ( actual_major_ver > major_ver )
|| ( actual_major_ver == major_ver && actual_minor_ver > minor_ver )
|| ( actual_major_ver == major_ver && actual_minor_ver == minor_ver && actual_patch_ver >= patch_ver ) ;
return result ;
}
Glib::ustring Utils::format_size( Sector sectors, Byte_Value sector_size )
{
std::stringstream ss ;
ss << std::setiosflags( std::ios::fixed ) << std::setprecision( 2 ) ;
if ( (sectors * sector_size) < KIBIBYTE )
{
ss << sector_to_unit( sectors, sector_size, UNIT_BYTE ) ;
return String::ucompose( _("%1 B"), ss .str() ) ;
}
else if ( (sectors * sector_size) < MEBIBYTE )
{
ss << sector_to_unit( sectors, sector_size, UNIT_KIB ) ;
return String::ucompose( _("%1 KiB"), ss .str() ) ;
}
else if ( (sectors * sector_size) < GIBIBYTE )
{
ss << sector_to_unit( sectors, sector_size, UNIT_MIB ) ;
return String::ucompose( _("%1 MiB"), ss .str() ) ;
}
else if ( (sectors * sector_size) < TEBIBYTE )
{
ss << sector_to_unit( sectors, sector_size, UNIT_GIB ) ;
return String::ucompose( _("%1 GiB"), ss .str() ) ;
}
else
{
ss << sector_to_unit( sectors, sector_size, UNIT_TIB ) ;
return String::ucompose( _("%1 TiB"), ss .str() ) ;
}
}
Glib::ustring Utils::format_time( std::time_t seconds )
{
Glib::ustring time ;
int unit = static_cast<int>( seconds / 3600 ) ;
if ( unit < 10 )
time += "0" ;
time += num_to_str( unit ) + ":" ;
seconds %= 3600 ;
unit = static_cast<int>( seconds / 60 ) ;
if ( unit < 10 )
time += "0" ;
time += num_to_str( unit ) + ":" ;
seconds %= 60 ;
if ( seconds < 10 )
time += "0" ;
time += num_to_str( seconds ) ;
return time ;
}
double Utils::sector_to_unit( Sector sectors, Byte_Value sector_size, SIZE_UNIT size_unit )
{
switch ( size_unit )
{
case UNIT_BYTE :
return sectors * sector_size ;
case UNIT_KIB :
return sectors / ( static_cast<double>( KIBIBYTE ) / sector_size );
case UNIT_MIB :
return sectors / ( static_cast<double>( MEBIBYTE ) / sector_size );
case UNIT_GIB :
return sectors / ( static_cast<double>( GIBIBYTE ) / sector_size );
case UNIT_TIB :
return sectors / ( static_cast<double>( TEBIBYTE ) / sector_size );
default:
return sectors ;
}
}
int Utils::execute_command( const Glib::ustring & command )
{
Glib::ustring dummy ;
return execute_command( command, dummy, dummy ) ;
}
class utils_execute_command_status
{
public:
bool running;
int pipecount;
int exit_status;
bool foreground;
Glib::Mutex mutex;
Glib::Cond cond;
void store_exit_status( GPid pid, int status );
void execute_command_eof();
};
void utils_execute_command_status::store_exit_status( GPid pid, int status )
{
exit_status = status;
running = false;
if (pipecount == 0) // pipes finished first
{
if (foreground)
Gtk::Main::quit();
else {
mutex.lock();
cond.signal();
mutex.unlock();
}
}
Glib::spawn_close_pid( pid );
}
void utils_execute_command_status::execute_command_eof()
{
if (--pipecount)
return; // wait for second pipe to eof
if ( !running ) // already got exit status
{
if (foreground)
Gtk::Main::quit();
else {
mutex.lock();
cond.signal();
mutex.unlock();
}
}
}
static void set_locale()
{
setenv( "LC_ALL", "C", 1 );
}
int Utils::execute_command( const Glib::ustring & command,
Glib::ustring & output,
Glib::ustring & error,
bool use_C_locale )
{
Glib::Pid pid;
// set up pipes for capture
int out, err;
utils_execute_command_status status;
// spawn external process
status.running = true;
status.pipecount = 2;
status.foreground = (Glib::Thread::self() == GParted_Core::mainthread);
try {
Glib::spawn_async_with_pipes(
std::string(),
Glib::shell_parse_argv( command ),
Glib::SPAWN_DO_NOT_REAP_CHILD | Glib::SPAWN_SEARCH_PATH,
use_C_locale ? sigc::ptr_fun( set_locale ) : sigc::slot< void >(),
&pid,
0,
&out,
&err );
} catch (Glib::SpawnError &e) {
std::cerr << e.what() << std::endl;
return 1;
}
fcntl( out, F_SETFL, O_NONBLOCK );
fcntl( err, F_SETFL, O_NONBLOCK );
Glib::signal_child_watch().connect( sigc::mem_fun(
status, &utils_execute_command_status::store_exit_status ),
pid );
output.clear();
error.clear();
//Lock mutex so we have time to setup pipecapture for output and error streams
// before connecting the input/output signal handler
if( !status.foreground )
status.mutex.lock();
PipeCapture outputcapture( out, output );
PipeCapture errorcapture( err, error );
outputcapture.eof.connect( sigc::mem_fun(
status, &utils_execute_command_status::execute_command_eof ));
errorcapture.eof.connect( sigc::mem_fun(
status, &utils_execute_command_status::execute_command_eof ));
outputcapture.connect_signal( out );
errorcapture.connect_signal( err );
if( status.foreground)
Gtk::Main::run();
else {
status.cond.wait( status.mutex );
status.mutex.unlock();
}
close( out );
close( err );
return status.exit_status;
}
Glib::ustring Utils::regexp_label( const Glib::ustring & text
, const Glib::ustring & pattern
)
{
//Extract text from a regular sub-expression or pattern.
// E.g., "text we don't want (text we want)"
#ifdef HAVE_GLIB_REGEX
std::vector<Glib::ustring> results;
Glib::RefPtr<Glib::Regex> myregexp =
Glib::Regex::create( pattern
, Glib::REGEX_CASELESS | Glib::REGEX_MULTILINE
);
results = myregexp ->split( text );
if ( results .size() >= 2 )
return results[ 1 ] ;
else
return "" ;
#else /* ! HAVE_GLIB_REGEX */
Glib::ustring label = "" ;
regex_t preg ;
int nmatch = 2 ;
regmatch_t pmatch[ 2 ] ;
int rc = regcomp( &preg, pattern .c_str(), REG_EXTENDED | REG_ICASE | REG_NEWLINE ) ;
if ( rc == 0 )
{
if ( regexec( &preg, text .c_str(), nmatch, pmatch, 0 ) == 0 )
label = text .substr( pmatch[ 1 ] .rm_so, pmatch[ 1 ] .rm_eo - pmatch[ 1 ] .rm_so ) ;
regfree( &preg ) ;
}
return label ;
#endif
}
Glib::ustring Utils::trim( const Glib::ustring & src, const Glib::ustring & c /* = " \t\r\n" */ )
{
//Trim leading and trailing whitespace from string
Glib::ustring::size_type p2 = src.find_last_not_of(c);
if (p2 == Glib::ustring::npos) return Glib::ustring();
Glib::ustring::size_type p1 = src.find_first_not_of(c);
if (p1 == Glib::ustring::npos) p1 = 0;
return src.substr(p1, (p2-p1)+1);
}
Glib::ustring Utils::get_lang()
{
//Extract base language from string that may look like "en_CA.UTF-8"
// and return in the form "en-CA"
Glib::ustring lang = setlocale( LC_CTYPE, NULL ) ;
//Strip off anything after the period "." or at sign "@"
lang = Utils::regexp_label( lang .c_str(), "^([^.@]*)") ;
//Convert the underscore "_" to a hyphen "-"
Glib::ustring sought = "_" ;
Glib::ustring replacement = "-" ;
//NOTE: Application crashes if string replace is called and sought is not found,
// so we need to only perform replace if the sought is found.
if ( lang .find(sought) != Glib::ustring::npos )
lang .replace( lang .find(sought), sought .size(), replacement ) ;
return lang ;
}
//Extract a list of tokens from any number of background separator characters
// E.g., tokenize(str=" word1 word2 ", tokens, delimiters=" ")
// -> tokens=["word1","word2]
//The tokenize method copied and adapted from:
// http://www.linuxselfhelp.com/HOWTO/C++Programming-HOWTO-7.html
void Utils::tokenize( const Glib::ustring& str,
std::vector<Glib::ustring>& tokens,
const Glib::ustring& delimiters = " " )
{
// Skip delimiters at beginning.
Glib::ustring::size_type lastPos = str.find_first_not_of(delimiters, 0);
// Find first "non-delimiter".
Glib::ustring::size_type pos = str.find_first_of(delimiters, lastPos);
while (Glib::ustring::npos != pos || Glib::ustring::npos != lastPos)
{
// Found a token, add it to the vector.
tokens.push_back(str.substr(lastPos, pos - lastPos));
// Skip delimiters. Note the "not_of"
lastPos = str.find_first_not_of(delimiters, pos);
// Find next "non-delimiter"
pos = str.find_first_of(delimiters, lastPos);
}
}
//Split string on every delimiter, appending to the vector. Inspired by:
// http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c/3616605#3616605
// E.g. using Utils::split(str, result, ":") for str -> result
// "" -> [] "a" -> ["a"] "::" -> ["","",""] ":a::bb" -> ["","a","","bb"]
void Utils::split( const Glib::ustring& str,
std::vector<Glib::ustring>& result,
const Glib::ustring& delimiters )
{
//Special case zero length string to empty vector
if ( str == "" )
return ;
Glib::ustring::size_type fromPos = 0 ;
Glib::ustring::size_type delimPos = str.find_first_of( delimiters );
while ( Glib::ustring::npos != delimPos )
{
Glib::ustring word( str, fromPos, delimPos - fromPos ) ;
result .push_back( word ) ;
fromPos = delimPos + 1 ;
delimPos = str.find_first_of( delimiters, fromPos ) ;
}
Glib::ustring word( str, fromPos ) ;
result. push_back( word ) ;
}
// Converts a Glib::ustring into a int
int Utils::convert_to_int(const Glib::ustring & src)
{
int ret_val;
std::istringstream stream(src);
stream >> ret_val;
return ret_val;
}
// Create a new UUID
Glib::ustring Utils::generate_uuid(void)
{
uuid_t uuid;
char uuid_str[UUID_STRING_LENGTH+1];
uuid_generate(uuid);
uuid_unparse(uuid,uuid_str);
return uuid_str;
}
//Wrapper around statvfs() system call to get mounted file system size
// and free space, both in bytes.
int Utils::get_mounted_filesystem_usage( const Glib::ustring & mountpoint,
Byte_Value & fs_size, Byte_Value & fs_free,
Glib::ustring error_message )
{
struct statvfs sfs ;
int ret ;
ret = statvfs( mountpoint .c_str(), &sfs ) ;
if ( ret == 0 )
{
fs_size = static_cast<Byte_Value>( sfs .f_blocks ) * sfs .f_frsize ;
fs_free = static_cast<Byte_Value>( sfs .f_bfree ) * sfs .f_bsize ;
}
else
error_message = "statvfs (" + mountpoint + "): " + Glib::strerror( errno ) ;
return ret ;
}
//private functions ...
//Read kernel version, reporting success or failure
bool Utils::get_kernel_version( int & major_ver, int & minor_ver, int & patch_ver )
{
static bool read_file = false ;
static int read_major_ver = -1 ;
static int read_minor_ver = -1 ;
static int read_patch_ver = -1 ;
bool success = false ;
if ( ! read_file )
{
std::ifstream input( "/proc/version" ) ;
std::string line ;
if ( input )
{
getline( input, line ) ;
sscanf( line .c_str(), "Linux version %d.%d.%d",
&read_major_ver, &read_minor_ver, &read_patch_ver ) ;
input .close() ;
}
read_file = true ;
}
if ( read_major_ver > -1 && read_minor_ver > -1 && read_patch_ver > -1 )
{
major_ver = read_major_ver ;
minor_ver = read_minor_ver ;
patch_ver = read_patch_ver ;
success = true ;
}
return success ;
}
} //GParted..
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