kicad/common/common.cpp

1060 lines
29 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014-2020 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2008 Wayne Stambaugh <stambaughw@gmail.com>
* Copyright (C) 1992-2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <fctsys.h>
#include <eda_base_frame.h>
#include <project.h>
#include <common.h>
#include <reporter.h>
#include <macros.h>
#include <mutex>
#include <wx/process.h>
#include <wx/config.h>
#include <wx/utils.h>
#include <wx/stdpaths.h>
#include <wx/url.h>
#include <boost/uuid/uuid_generators.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <boost/functional/hash.hpp>
using KIGFX::COLOR4D;
// Create only once, as seeding is *very* expensive
static boost::uuids::random_generator randomGenerator;
// These don't have the same performance penalty, but might as well be consistent
static boost::uuids::string_generator stringGenerator;
static boost::uuids::nil_generator nilGenerator;
// Global nil reference
KIID niluuid( 0 );
// For static initialization
KIID& NilUuid()
{
static KIID nil( 0 );
return nil;
}
KIID::KIID() :
m_uuid( randomGenerator() ),
m_cached_timestamp( 0 )
{
}
KIID::KIID( int null ) :
m_uuid( nilGenerator() ),
m_cached_timestamp( 0 )
{
wxASSERT( null == 0 );
}
KIID::KIID( const wxString& aString ) :
m_uuid(),
m_cached_timestamp( 0 )
{
if( aString.length() == 8 )
{
// A legacy-timestamp-based UUID has only the last 4 octets filled in.
// Convert them individually to avoid stepping in the little-endian/big-endian
// doo-doo.
for( int i = 0; i < 4; ++i )
{
wxString octet = aString.substr( i * 2, 2 );
m_uuid.data[ i + 12 ] = strtol( octet.data(), NULL, 16 );
}
m_cached_timestamp = strtol( aString.c_str(), NULL, 16 );
}
else
{
try
{
m_uuid = stringGenerator( aString.wc_str() );
if( IsLegacyTimestamp() )
m_cached_timestamp = strtol( aString.substr( 28 ).c_str(), NULL, 16 );
}
catch( ... )
{
// Failed to parse string representation; best we can do is assign a new
// random one.
m_uuid = randomGenerator();
}
}
}
KIID::KIID( timestamp_t aTimestamp )
{
m_cached_timestamp = aTimestamp;
// A legacy-timestamp-based UUID has only the last 4 octets filled in.
// Convert them individually to avoid stepping in the little-endian/big-endian
// doo-doo.
wxString str = AsLegacyTimestampString();
for( int i = 0; i < 4; ++i )
{
wxString octet = str.substr( i * 2, 2 );
m_uuid.data[ i + 12 ] = strtol( octet.data(), NULL, 16 );
}
}
bool KIID::IsLegacyTimestamp() const
{
return !m_uuid.data[8] && !m_uuid.data[9] && !m_uuid.data[10] && !m_uuid.data[11];
}
timestamp_t KIID::AsLegacyTimestamp() const
{
return m_cached_timestamp;
}
size_t KIID::Hash() const
{
size_t hash = 0;
// Note: this is NOT little-endian/big-endian safe, but as long as it's just used
// at runtime it won't matter.
for( int i = 0; i < 4; ++i )
boost::hash_combine( hash, reinterpret_cast<const uint32_t*>( m_uuid.data )[i] );
return hash;
}
void KIID::Clone( const KIID& aUUID )
{
m_uuid = aUUID.m_uuid;
m_cached_timestamp = aUUID.m_cached_timestamp;
}
wxString KIID::AsString() const
{
return boost::uuids::to_string( m_uuid );
}
wxString KIID::AsLegacyTimestampString() const
{
return wxString::Format( "%8.8lX", (unsigned long) AsLegacyTimestamp() );
}
void KIID::ConvertTimestampToUuid()
{
if( !IsLegacyTimestamp() )
return;
m_cached_timestamp = 0;
m_uuid = randomGenerator();
}
/**
* Global variables definitions.
*
* TODO: All of these variables should be moved into the class were they
* are defined and used. Most of them probably belong in the
* application class.
*/
// When reading/writing files, we need to swtich to setlocale( LC_NUMERIC, "C" ).
// Works fine to read/write files with floating point numbers.
// We can call setlocale( LC_NUMERIC, "C" ) of wxLocale( "C", "C", "C", false )
// wxWidgets discourage a direct call to setlocale
// However, for us, calling wxLocale( "C", "C", "C", false ) has a unwanted effect:
// The I18N translations are no longer active, because the English dixtionary is selected.
// To read files, this is not a major issues, but the resul can differ
// from using setlocale(xx, "C").
// Previouly, we called setlocale( LC_NUMERIC, "C" )
// The old code will be removed when calling wxLocale( "C", "C", "C", false )
// is fully tested, and all issues fixed
#define USE_WXLOCALE 1 /* 0 to call setlocale, 1 to call wxLocale */
// On Windows, when using setlocale, a wx alert is generated
// in some cases (reading a bitmap for instance)
// So we disable alerts during the time a file is read or written
#if !USE_WXLOCALE
#if defined( _WIN32 ) && defined( DEBUG )
// a wxAssertHandler_t function to filter wxWidgets alert messages when reading/writing a file
// when switching the locale to LC_NUMERIC, "C"
// It is used in class LOCALE_IO to hide a useless (in kicad) wxWidgets alert message
void KiAssertFilter( const wxString &file, int line,
const wxString &func, const wxString &cond,
const wxString &msg)
{
if( !msg.Contains( "Decimal separator mismatch" ) )
wxTheApp->OnAssertFailure( file.c_str(), line, func.c_str(), cond.c_str(), msg.c_str() );
}
#endif
#endif
std::atomic<unsigned int> LOCALE_IO::m_c_count( 0 );
LOCALE_IO::LOCALE_IO() : m_wxLocale( nullptr )
{
// use thread safe, atomic operation
if( m_c_count++ == 0 )
{
#if USE_WXLOCALE
m_wxLocale = new wxLocale( "C", "C", "C", false );
#else
// Store the user locale name, to restore this locale later, in dtor
m_user_locale = setlocale( LC_NUMERIC, nullptr );
#if defined( _WIN32 ) && defined( DEBUG )
// Disable wxWidgets alerts
wxSetAssertHandler( KiAssertFilter );
#endif
// Switch the locale to C locale, to read/write files with fp numbers
setlocale( LC_NUMERIC, "C" );
#endif
}
}
LOCALE_IO::~LOCALE_IO()
{
// use thread safe, atomic operation
if( --m_c_count == 0 )
{
// revert to the user locale
#if USE_WXLOCALE
delete m_wxLocale; // Deleting m_wxLocale restored previous locale
m_wxLocale = nullptr;
#else
setlocale( LC_NUMERIC, m_user_locale.c_str() );
#if defined( _WIN32 ) && defined( DEBUG )
// Enable wxWidgets alerts
wxSetDefaultAssertHandler();
#endif
#endif
}
}
wxSize GetTextSize( const wxString& aSingleLine, wxWindow* aWindow )
{
wxCoord width;
wxCoord height;
{
wxClientDC dc( aWindow );
dc.SetFont( aWindow->GetFont() );
dc.GetTextExtent( aSingleLine, &width, &height );
}
return wxSize( width, height );
}
bool EnsureTextCtrlWidth( wxTextCtrl* aCtrl, const wxString* aString )
{
wxWindow* window = aCtrl->GetParent();
if( !window )
window = aCtrl;
wxString ctrlText;
if( !aString )
{
ctrlText = aCtrl->GetValue();
aString = &ctrlText;
}
wxSize textz = GetTextSize( *aString, window );
wxSize ctrlz = aCtrl->GetSize();
if( ctrlz.GetWidth() < textz.GetWidth() + 10 )
{
ctrlz.SetWidth( textz.GetWidth() + 10 );
aCtrl->SetSizeHints( ctrlz );
return true;
}
return false;
}
void SelectReferenceNumber( wxTextEntry* aTextEntry )
{
wxString ref = aTextEntry->GetValue();
if( ref.find_first_of( '?' ) != ref.npos )
{
aTextEntry->SetSelection( ref.find_first_of( '?' ), ref.find_last_of( '?' ) + 1 );
}
else
{
wxString num = ref;
while( !num.IsEmpty() && ( !isdigit( num.Last() ) || !isdigit( num.GetChar( 0 ) ) ) )
{
if( !isdigit( num.Last() ) )
num.RemoveLast();
if( !isdigit( num.GetChar ( 0 ) ) )
num = num.Right( num.Length() - 1);
}
aTextEntry->SetSelection( ref.Find( num ), ref.Find( num ) + num.Length() );
if( num.IsEmpty() )
aTextEntry->SetSelection( -1, -1 );
}
}
void wxStringSplit( const wxString& aText, wxArrayString& aStrings, wxChar aSplitter )
{
wxString tmp;
for( unsigned ii = 0; ii < aText.Length(); ii++ )
{
if( aText[ii] == aSplitter )
{
aStrings.Add( tmp );
tmp.Clear();
}
else
tmp << aText[ii];
}
if( !tmp.IsEmpty() )
{
aStrings.Add( tmp );
}
}
int ProcessExecute( const wxString& aCommandLine, int aFlags, wxProcess *callback )
{
return (int) wxExecute( aCommandLine, aFlags, callback );
}
enum Bracket
{
Bracket_None,
Bracket_Normal = ')',
Bracket_Curly = '}',
#ifdef __WINDOWS__
Bracket_Windows = '%', // yeah, Windows people are a bit strange ;-)
#endif
Bracket_Max
};
wxString ExpandTextVars( const wxString& aSource,
const std::function<bool( wxString* )>* aLocalResolver,
const PROJECT* aProject,
const std::function<bool( wxString* )>* aFallbackResolver )
{
wxString newbuf;
size_t sourceLen = aSource.length();
newbuf.Alloc( sourceLen ); // best guess (improves performance)
for( size_t i = 0; i < sourceLen; ++i )
{
if( aSource[i] == '$' && i + 1 < sourceLen && aSource[i+1] == '{' )
{
wxString token;
for( i = i + 2; i < sourceLen; ++i )
{
if( aSource[i] == '}' )
break;
else
token.append( aSource[i] );
}
if( token.IsEmpty() )
continue;
if( aLocalResolver && (*aLocalResolver)( &token ) )
{
newbuf.append( token );
}
else if( aProject && aProject->TextVarResolver( &token ) )
{
newbuf.append( token );
}
else if( aFallbackResolver && (*aFallbackResolver)( &token ) )
{
newbuf.append( token );
}
else
{
// Token not resolved: leave the reference unchanged
newbuf.append( "${" + token + "}" );
}
}
else
{
newbuf.append( aSource[i] );
}
}
return newbuf;
}
//
// Stolen from wxExpandEnvVars and then heavily optimized
//
wxString KIwxExpandEnvVars( const wxString& str, const PROJECT* aProject )
{
size_t strlen = str.length();
wxString strResult;
strResult.Alloc( strlen ); // best guess (improves performance)
for( size_t n = 0; n < strlen; n++ )
{
wxUniChar str_n = str[n];
switch( str_n.GetValue() )
{
#ifdef __WINDOWS__
case wxT( '%' ):
#endif // __WINDOWS__
case wxT( '$' ):
{
Bracket bracket;
#ifdef __WINDOWS__
if( str_n == wxT( '%' ) )
bracket = Bracket_Windows;
else
#endif // __WINDOWS__
if( n == strlen - 1 )
{
bracket = Bracket_None;
}
else
{
switch( str[n + 1].GetValue() )
{
case wxT( '(' ):
bracket = Bracket_Normal;
str_n = str[++n]; // skip the bracket
break;
case wxT( '{' ):
bracket = Bracket_Curly;
str_n = str[++n]; // skip the bracket
break;
default:
bracket = Bracket_None;
}
}
size_t m = n + 1;
wxUniChar str_m = str[m];
while( m < strlen && ( wxIsalnum( str_m ) || str_m == wxT( '_' ) || str_m == wxT( ':' ) ) )
str_m = str[++m];
wxString strVarName( str.c_str() + n + 1, m - n - 1 );
// NB: use wxGetEnv instead of wxGetenv as otherwise variables
// set through wxSetEnv may not be read correctly!
bool expanded = false;
wxString tmp = strVarName;
if( aProject && aProject->TextVarResolver( &tmp ) )
{
strResult += tmp;
expanded = true;
}
else if( wxGetEnv( strVarName, &tmp ) )
{
strResult += tmp;
expanded = true;
}
else
{
// variable doesn't exist => don't change anything
#ifdef __WINDOWS__
if ( bracket != Bracket_Windows )
#endif
if ( bracket != Bracket_None )
strResult << str[n - 1];
strResult << str_n << strVarName;
}
// check the closing bracket
if( bracket != Bracket_None )
{
if( m == strlen || str_m != (wxChar)bracket )
{
// under MSW it's common to have '%' characters in the registry
// and it's annoying to have warnings about them each time, so
// ignore them silently if they are not used for env vars
//
// under Unix, OTOH, this warning could be useful for the user to
// understand why isn't the variable expanded as intended
#ifndef __WINDOWS__
wxLogWarning( _( "Environment variables expansion failed: missing '%c' "
"at position %u in '%s'." ),
(char)bracket, (unsigned int) (m + 1), str.c_str() );
#endif // __WINDOWS__
}
else
{
// skip closing bracket unless the variables wasn't expanded
if( !expanded )
strResult << (wxChar)bracket;
m++;
}
}
n = m - 1; // skip variable name
str_n = str[n];
}
break;
case wxT( '\\' ):
// backslash can be used to suppress special meaning of % and $
if( n != strlen - 1 && (str[n + 1] == wxT( '%' ) || str[n + 1] == wxT( '$' )) )
{
str_n = str[++n];
strResult += str_n;
break;
}
KI_FALLTHROUGH;
default:
strResult += str_n;
}
}
#ifndef __WINDOWS__
if( strResult.StartsWith( "~" ) )
strResult.Replace( "~", wxGetHomeDir(), false );
#endif // __WINDOWS__
return strResult;
}
const wxString ExpandEnvVarSubstitutions( const wxString& aString, PROJECT* aProject )
{
// wxGetenv( wchar_t* ) is not re-entrant on linux.
// Put a lock on multithreaded use of wxGetenv( wchar_t* ), called from wxEpandEnvVars(),
static std::mutex getenv_mutex;
std::lock_guard<std::mutex> lock( getenv_mutex );
// We reserve the right to do this another way, by providing our own member function.
return KIwxExpandEnvVars( aString, aProject );
}
const wxString ResolveUriByEnvVars( const wxString& aUri, PROJECT* aProject )
{
wxString uri = ExpandTextVars( aUri, nullptr, aProject );
// URL-like URI: return as is.
wxURL url( uri );
if( url.GetError() == wxURL_NOERR )
return uri;
// Otherwise, the path points to a local file. Resolve environment variables if any.
return ExpandEnvVarSubstitutions( aUri, aProject );
}
bool EnsureFileDirectoryExists( wxFileName* aTargetFullFileName,
const wxString& aBaseFilename,
REPORTER* aReporter )
{
wxString msg;
wxString baseFilePath = wxFileName( aBaseFilename ).GetPath();
// make aTargetFullFileName path, which is relative to aBaseFilename path (if it is not
// already an absolute path) absolute:
if( !aTargetFullFileName->MakeAbsolute( baseFilePath ) )
{
if( aReporter )
{
msg.Printf( _( "Cannot make path \"%s\" absolute with respect to \"%s\"." ),
aTargetFullFileName->GetPath(),
baseFilePath );
aReporter->Report( msg, RPT_SEVERITY_ERROR );
}
return false;
}
// Ensure the path of aTargetFullFileName exists, and create it if needed:
wxString outputPath( aTargetFullFileName->GetPath() );
if( !wxFileName::DirExists( outputPath ) )
{
if( wxMkdir( outputPath ) )
{
if( aReporter )
{
msg.Printf( _( "Output directory \"%s\" created.\n" ), outputPath );
aReporter->Report( msg, RPT_SEVERITY_INFO );
return true;
}
}
else
{
if( aReporter )
{
msg.Printf( _( "Cannot create output directory \"%s\".\n" ), outputPath );
aReporter->Report( msg, RPT_SEVERITY_ERROR );
}
return false;
}
}
return true;
}
#ifdef __WXMAC__
wxString GetOSXKicadUserDataDir()
{
// According to wxWidgets documentation for GetUserDataDir:
// Mac: ~/Library/Application Support/appname
wxFileName udir( wxStandardPaths::Get().GetUserDataDir(), wxEmptyString );
// Since appname is different if started via launcher or standalone binary
// map all to "kicad" here
udir.RemoveLastDir();
udir.AppendDir( "kicad" );
return udir.GetPath();
}
wxString GetOSXKicadMachineDataDir()
{
return wxT( "/Library/Application Support/kicad" );
}
wxString GetOSXKicadDataDir()
{
// According to wxWidgets documentation for GetDataDir:
// Mac: appname.app/Contents/SharedSupport bundle subdirectory
wxFileName ddir( wxStandardPaths::Get().GetDataDir(), wxEmptyString );
// This must be mapped to main bundle for everything but kicad.app
const wxArrayString dirs = ddir.GetDirs();
if( dirs[dirs.GetCount() - 3] != wxT( "kicad.app" ) )
{
// Bundle structure resp. current path is
// kicad.app/Contents/Applications/<standalone>.app/Contents/SharedSupport
// and will be mapped to
// kicad.app/Contents/SharedSupprt
ddir.RemoveLastDir();
ddir.RemoveLastDir();
ddir.RemoveLastDir();
ddir.RemoveLastDir();
ddir.AppendDir( wxT( "SharedSupport" ) );
}
return ddir.GetPath();
}
#endif
// add this only if it is not in wxWidgets (for instance before 3.1.0)
#ifdef USE_KICAD_WXSTRING_HASH
size_t std::hash<wxString>::operator()( const wxString& s ) const
{
return std::hash<std::wstring>{}( s.ToStdWstring() );
}
#endif
#ifdef USE_KICAD_WXPOINT_LESS_AND_HASH
size_t std::hash<wxPoint>::operator() ( const wxPoint& k ) const
{
auto xhash = std::hash<int>()( k.x );
// 0x9e3779b9 is 2^33 / ( 1 + sqrt(5) )
// Adding this value ensures that consecutive bits of y will not be close to each other
// decreasing the likelihood of hash collision in similar values of x and y
return xhash ^ ( std::hash<int>()( k.y ) + 0x9e3779b9 + ( xhash << 6 ) + ( xhash >> 2 ) );
}
bool std::less<wxPoint>::operator()( const wxPoint& aA, const wxPoint& aB ) const
{
if( aA.x == aB.x )
return aA.y < aB.y;
return aA.x < aB.x;
}
#endif
std::ostream& operator<<( std::ostream& out, const wxSize& size )
{
out << " width=\"" << size.GetWidth() << "\" height=\"" << size.GetHeight() << "\"";
return out;
}
std::ostream& operator<<( std::ostream& out, const wxPoint& pt )
{
out << " x=\"" << pt.x << "\" y=\"" << pt.y << "\"";
return out;
}
/**
* Performance enhancements to file and directory operations.
*
* Note: while it's annoying to have to make copies of wxWidgets stuff and then
* add platform-specific performance optimizations, the following routines offer
* SIGNIFICANT performance benefits.
*/
/**
* WX_FILENAME
*
* A wrapper around a wxFileName which avoids expensive calls to wxFileName::SplitPath()
* and string concatenations by caching the path and filename locally and only resolving
* the wxFileName when it has to.
*/
WX_FILENAME::WX_FILENAME( const wxString& aPath, const wxString& aFilename ) :
m_fn( aPath, aFilename ),
m_path( aPath ),
m_fullName( aFilename )
{ }
void WX_FILENAME::SetFullName( const wxString& aFileNameAndExtension )
{
m_fullName = aFileNameAndExtension;
}
wxString WX_FILENAME::GetName() const
{
size_t dot = m_fullName.find_last_of( wxT( '.' ) );
return m_fullName.substr( 0, dot );
}
wxString WX_FILENAME::GetFullName() const
{
return m_fullName;
}
wxString WX_FILENAME::GetPath() const
{
return m_path;
}
wxString WX_FILENAME::GetFullPath() const
{
return m_path + wxT( '/' ) + m_fullName;
}
// Write locally-cached values to the wxFileName. MUST be called before using m_fn.
void WX_FILENAME::resolve()
{
size_t dot = m_fullName.find_last_of( wxT( '.' ) );
m_fn.SetName( m_fullName.substr( 0, dot ) );
m_fn.SetExt( m_fullName.substr( dot + 1 ) );
}
long long WX_FILENAME::GetTimestamp()
{
resolve();
if( m_fn.FileExists() )
return m_fn.GetModificationTime().GetValue().GetValue();
return 0;
}
/**
* A copy of wxMatchWild(), which wxWidgets attributes to Douglas A. Lewis
* <dalewis@cs.Buffalo.EDU> and ircII's reg.c.
*
* This version is modified to skip any encoding conversions (for performance).
*/
bool matchWild( const char* pat, const char* text, bool dot_special )
{
if( !*text )
{
/* Match if both are empty. */
return !*pat;
}
const char *m = pat,
*n = text,
*ma = NULL,
*na = NULL;
int just = 0,
acount = 0,
count = 0;
if( dot_special && (*n == '.') )
{
/* Never match so that hidden Unix files
* are never found. */
return false;
}
for(;;)
{
if( *m == '*' )
{
ma = ++m;
na = n;
just = 1;
acount = count;
}
else if( *m == '?' )
{
m++;
if( !*n++ )
return false;
}
else
{
if( *m == '\\' )
{
m++;
/* Quoting "nothing" is a bad thing */
if( !*m )
return false;
}
if( !*m )
{
/*
* If we are out of both strings or we just
* saw a wildcard, then we can say we have a
* match
*/
if( !*n )
return true;
if( just )
return true;
just = 0;
goto not_matched;
}
/*
* We could check for *n == NULL at this point, but
* since it's more common to have a character there,
* check to see if they match first (m and n) and
* then if they don't match, THEN we can check for
* the NULL of n
*/
just = 0;
if( *m == *n )
{
m++;
count++;
n++;
}
else
{
not_matched:
/*
* If there are no more characters in the
* string, but we still need to find another
* character (*m != NULL), then it will be
* impossible to match it
*/
if( !*n )
return false;
if( ma )
{
m = ma;
n = ++na;
count = acount;
}
else
return false;
}
}
}
}
/**
* A copy of ConvertFileTimeToWx() because wxWidgets left it as a static function
* private to src/common/filename.cpp.
*/
#if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
// Convert between wxDateTime and FILETIME which is a 64-bit value representing
// the number of 100-nanosecond intervals since January 1, 1601 UTC.
//
// This is the offset between FILETIME epoch and the Unix/wxDateTime Epoch.
static wxInt64 EPOCH_OFFSET_IN_MSEC = wxLL(11644473600000);
static void ConvertFileTimeToWx( wxDateTime *dt, const FILETIME &ft )
{
wxLongLong t( ft.dwHighDateTime, ft.dwLowDateTime );
t /= 10000; // Convert hundreds of nanoseconds to milliseconds.
t -= EPOCH_OFFSET_IN_MSEC;
*dt = wxDateTime( t );
}
#endif // wxUSE_DATETIME && __WIN32__
/**
* TimestampDir
*
* This routine offers SIGNIFICANT performance benefits over using wxWidgets to gather
* timestamps from matching files in a directory.
* @param aDirPath the directory to search
* @param aFilespec a (wildcarded) file spec to match against
* @return a hash of the last-mod-dates of all matching files in the directory
*/
long long TimestampDir( const wxString& aDirPath, const wxString& aFilespec )
{
long long timestamp = 0;
#if defined( __WIN32__ )
// Win32 version.
// Save time by not searching for each path twice: once in wxDir.GetNext() and once in
// wxFileName.GetModificationTime(). Also cuts out wxWidgets' string-matching and case
// conversion by staying on the MSW side of things.
std::wstring filespec( aDirPath.t_str() );
filespec += '\\';
filespec += aFilespec.t_str();
WIN32_FIND_DATA findData;
wxDateTime lastModDate;
HANDLE fileHandle = ::FindFirstFile( filespec.data(), &findData );
if( fileHandle != INVALID_HANDLE_VALUE )
{
do
{
ConvertFileTimeToWx( &lastModDate, findData.ftLastWriteTime );
timestamp += lastModDate.GetValue().GetValue();
}
while ( FindNextFile( fileHandle, &findData ) != 0 );
}
FindClose( fileHandle );
#else
// POSIX version.
// Save time by not converting between encodings -- do everything on the file-system side.
std::string filespec( aFilespec.fn_str() );
std::string dir_path( aDirPath.fn_str() );
DIR* dir = opendir( dir_path.c_str() );
if( dir )
{
for( dirent* dir_entry = readdir( dir ); dir_entry; dir_entry = readdir( dir ) )
{
if( !matchWild( filespec.c_str(), dir_entry->d_name, true ) )
continue;
std::string entry_path = dir_path + '/' + dir_entry->d_name;
struct stat entry_stat;
if( wxCRT_Lstat( entry_path.c_str(), &entry_stat ) == 0 )
{
// Timestamp the source file, not the symlink
if( S_ISLNK( entry_stat.st_mode ) ) // wxFILE_EXISTS_SYMLINK
{
char buffer[ PATH_MAX + 1 ];
ssize_t pathLen = readlink( entry_path.c_str(), buffer, PATH_MAX );
if( pathLen > 0 )
{
struct stat linked_stat;
buffer[ pathLen ] = '\0';
entry_path = dir_path + buffer;
if( wxCRT_Lstat( entry_path.c_str(), &linked_stat ) == 0 )
{
entry_stat = linked_stat;
}
else
{
// if we couldn't lstat the linked file we'll have to just use
// the symbolic link info
}
}
}
if( S_ISREG( entry_stat.st_mode ) ) // wxFileExists()
timestamp += entry_stat.st_mtime * 1000;
}
else
{
// if we couldn't lstat the file itself all we can do is use the name
timestamp += (signed) std::hash<std::string>{}( std::string( dir_entry->d_name ) );
}
}
closedir( dir );
}
#endif
return timestamp;
}