kicad/common/common.cpp

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/*
* 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
*/
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#include <eda_base_frame.h>
#include <project.h>
#include <common.h>
#include <reporter.h>
#include <macros.h>
#include <mutex>
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#include <wx/process.h>
#include <wx/config.h>
#include <wx/utils.h>
#include <wx/stdpaths.h>
#include <wx/url.h>
#include <wx/wx.h>
int ProcessExecute( const wxString& aCommandLine, int aFlags, wxProcess *callback )
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{
return (int) wxExecute( aCommandLine, aFlags, callback );
}
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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 PROJECT* aProject )
{
return ExpandTextVars( aSource, nullptr, nullptr, aProject );
}
wxString ExpandTextVars( const wxString& aSource,
const std::function<bool( wxString* )>* aLocalResolver,
const std::function<bool( wxString* )>* aFallbackResolver,
const PROJECT* aProject )
{
wxString newbuf;
size_t sourceLen = aSource.length();
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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;
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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;
if( m >= strlen )
break;
wxUniChar str_m = str[m];
while( wxIsalnum( str_m ) || str_m == wxT( '_' ) || str_m == wxT( ':' ) )
{
if( ++m == strlen )
{
str_m = 0;
break;
}
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, 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 ) )
{
// Make every directory provided when the provided path doesn't exist
if( wxFileName::Mkdir( outputPath, wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL ) )
{
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;
}
/**
* 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.
*/
/**
* 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();
timestamp += findData.nFileSizeLow; // Get the file size (partial) as well to check for sneaky changes
}
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;
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if( wxCRT_Lstat( entry_path.c_str(), &entry_stat ) == 0 )
{
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// Timestamp the source file, not the symlink
if( S_ISLNK( entry_stat.st_mode ) ) // wxFILE_EXISTS_SYMLINK
{
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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
}
}
}
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if( S_ISREG( entry_stat.st_mode ) ) // wxFileExists()
{
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timestamp += entry_stat.st_mtime * 1000;
timestamp += entry_stat.st_size; // Get the file size as well to check for sneaky changes
}
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}
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 ) );
}
}
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closedir( dir );
}
#endif
return timestamp;
}