Refactor help file search logic

Rely on existing code to initialise the list of paths in which the KiCad
documentation might be located, thereby making SearchHelpFileFullPath
platform-agnostic and easier to read.
This commit is contained in:
Marcus A. Romer 2021-04-05 19:03:36 +02:00 committed by Wayne Stambaugh
parent 61ce1b35ec
commit a97ccbf7ed
3 changed files with 96 additions and 194 deletions

View File

@ -2,197 +2,107 @@
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014-2015 CERN
* Copyright (C) 2014-2018 KiCad Developers, see CHANGELOG.TXT for contributors.
* Copyright (C) 2014-2021 KiCad Developers, see AUTHORS.txt for contributors.
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* 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 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.
* 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
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <pgm_base.h>
#include <common.h>
#include <config.h> // to define DEFAULT_INSTALL_PATH
#include <macros.h>
#include <wx/log.h>
#include <pgm_base.h>
#include <systemdirsappend.h>
#include <trace_helpers.h>
#include <paths.h>
#include <wx/arrstr.h>
#include <wx/log.h>
/**
* Function FindFileInSearchPaths
* looks in "this" for \a aFilename, but first modifies every search
* path by appending a list of path fragments from aSubdirs. That modification
* is not relative.
*/
wxString FindFileInSearchPaths( const SEARCH_STACK& aStack,
const wxString& aFilename, const wxArrayString* aSubdirs )
wxString SearchHelpFileFullPath( const wxString& aBaseName )
{
wxPathList paths;
SEARCH_STACK basePaths;
wxString helpFile;
for( unsigned i = 0; i < aStack.GetCount(); ++i )
// the documentation is expected to be located in one of the system directories
SystemDirsAppend( &basePaths );
#if defined( DEBUG )
basePaths.Show( wxString( __func__ ) + ": basePaths" );
#endif
// By default, the documentation from kicad-doc is installed to a folder called "help" with
// subdirectories for all supported languages. Although this can be changed at build-time by
// overwriting ${KICAD_DOC_PATH}, the best guess KiCad can make is that help files are always
// located in a folder named "help". If no translation matching the current locale settings is
// available, the English version will be returned instead.
wxLocale* currentLocale = Pgm().GetLocale();
wxArrayString localeNameDirs;
// canonical form of the current locale (e.g., "fr_FR")
localeNameDirs.Add( currentLocale->GetCanonicalName() );
// short form of the current locale (e.g., "fr")
// wxLocale::GetName() does not always return the short form
localeNameDirs.Add( currentLocale->GetName().BeforeLast( '_' ) );
// plain English (in case a localised version of the help file cannot be found)
localeNameDirs.Add( "en" );
for( wxString& locale : localeNameDirs )
{
wxFileName fn( aStack[i], wxEmptyString );
SEARCH_STACK docPaths;
if( aSubdirs )
for( wxString& base : basePaths )
{
for( unsigned j = 0; j < aSubdirs->GetCount(); j++ )
fn.AppendDir( (*aSubdirs)[j] );
wxFileName path( base, wxEmptyString );
// add <base>/help/<locale>/
path.AppendDir( "help" );
path.AppendDir( locale );
docPaths.AddPaths( path.GetPath() );
// add <base>/doc/help/<locale>/
path.InsertDir( path.GetDirCount() - 2, "doc" );
docPaths.AddPaths( path.GetPath() );
// add <base>/doc/kicad/help/<locale>/
path.InsertDir( path.GetDirCount() - 2, "kicad" );
docPaths.AddPaths( path.GetPath() );
}
wxLogTrace( tracePathsAndFiles, " %s", fn.GetFullPath() );
#if defined( DEBUG )
docPaths.Show( wxString( __func__ ) + ": docPaths (" + locale + ")" );
#endif
if( fn.DirExists() )
// search HTML first, as it is the preferred format for help files
wxLogTrace( tracePathsAndFiles, "Checking SEARCH_STACK for file %s.html", aBaseName );
helpFile = docPaths.FindValidPath( aBaseName + ".html" );
if( !helpFile.IsEmpty() )
{
paths.Add( fn.GetPath() );
// prepend URI protocol to open the file in a browser
helpFile = "file://" + helpFile;
break;
}
// search PDF only when no corresponding HTML file was found
wxLogTrace( tracePathsAndFiles, "Checking SEARCH_STACK for file %s.pdf", aBaseName );
helpFile = docPaths.FindValidPath( aBaseName + ".pdf" );
if( !helpFile.IsEmpty() )
break;
}
return paths.FindValidPath( aFilename );
}
// See also FindKicadHelpPath.cpp.notused.
wxString SearchHelpFileFullPath( const SEARCH_STACK& aSStack, const wxString& aBaseName )
{
wxArrayString subdirs;
wxArrayString altsubdirs;
SEARCH_STACK ss = aSStack;
// It might already be in aSStack, but why depend on other code
// far away when it's so easy to add it again (to our copy) as the first place to look.
// This is CMAKE_INSTALL_PREFIX unless DEFAULT_INSTALL_PATH was defined during
// build configuration:
ss.AddPaths( wxT( DEFAULT_INSTALL_PATH ), 0 );
#if defined(__WXMAC__)
ss.AddPaths( PATHS::GetOSXKicadMachineDataDir() );
ss.AddPaths( Pgm().GetExecutablePath(), 0 );
// OS X packages can have the help files in
// /Library/Application\ Support/kicad/help,
// and in Contents/SharedSupport/help inside the
// bundle.
// Below we account for an international subdirectory.
subdirs.Add( "help" );
altsubdirs.Add( "Contents" );
altsubdirs.Add( "SharedSupport" );
altsubdirs.Add( "help" );
#endif
#if ! defined(__WXMAC__) // && defined(__linux__)
// This is the executable path minus the trailing bin directory used on Windows and Linux.
wxFileName tmp( Pgm().GetExecutablePath(), wxEmptyString );
wxArrayString binDirs = tmp.GetDirs();
if( !binDirs.IsEmpty() && binDirs[ binDirs.GetCount() - 1 ].CmpNoCase( wxT( "bin" ) ) == 0 )
tmp.RemoveLastDir();
ss.AddPaths( tmp.GetPath(), 0 );
// Based on kicad-doc.bzr/CMakeLists.txt, line 20, the help files are
// installed into "<CMAKE_INSTALL_PREFIX>/share/doc/kicad/help" for linux.
// This is ${KICAD_HELP} var in that CMakeLists.txt file.
// Below we account for an international subdirectory.
subdirs.Add( "share" );
subdirs.Add( "doc" );
subdirs.Add( "kicad" );
subdirs.Add( "help" );
// Based on kicad-doc.bzr/CMakeLists.txt, line 35, the help files are
// installed into "<CMAKE_INSTALL_PREFIX>/doc/help" for Windows.
// This is ${KICAD_HELP} var in that CMakeLists.txt file.
// Below we account for an international subdirectory.
altsubdirs.Add( "doc" );
altsubdirs.Add( "help" );
#endif
// If there's a KICAD environment variable set, always use that guy's path first.
if( !Pgm().GetKicadEnvVariable().IsEmpty() )
ss.AddPaths( Pgm().GetKicadEnvVariable(), 0 );
/* Search for a help file.
* we *must* find a help file.
* so help is searched in directories in this order:
* help/<canonical name> like help/en_GB
* help/<short name> like help/en
* help/en
*/
wxLocale* i18n = Pgm().GetLocale();
// We try to find help file in help/<canonical name>
// If fails, try to find help file in help/<short canonical name>
// If fails, try to find help file in help/en
wxArrayString locale_name_dirs;
locale_name_dirs.Add( i18n->GetCanonicalName() ); // canonical name like fr_FR
// wxLocale::GetName() does not return always the short name
locale_name_dirs.Add( i18n->GetName().BeforeLast( '_' ) ); // short canonical name like fr
locale_name_dirs.Add( "en" ); // default (en)
#if defined(DEBUG) && 1
ss.Show( wxString( __func__ ) );
wxLogTrace( tracePathsAndFiles, "%s: m_help_file:'%s'", __func__, aBaseName );
#endif
wxLogTrace( tracePathsAndFiles, "Checking SEARCH_STACK for file %s", aBaseName );
// Help files can be html (.html ext) or pdf (.pdf ext) files.
// Therefore, <BaseName>.html file is searched and if not found,
// <BaseName>.pdf file is searched in the same paths
wxString fn;
for( unsigned ii = 0; ii < locale_name_dirs.GetCount(); ii++ )
{
subdirs.Add( locale_name_dirs[ii] );
altsubdirs.Add( locale_name_dirs[ii] );
fn = FindFileInSearchPaths( ss, aBaseName + wxT( ".html" ), &altsubdirs );
if( !fn.IsEmpty() )
{
// Prepend URI protocol since we will open in a browser
fn = wxT( "file://" ) + fn;
break;
}
fn = FindFileInSearchPaths( ss, aBaseName + wxT( ".pdf" ), &altsubdirs );
if( !fn.IsEmpty() )
break;
fn = FindFileInSearchPaths( ss, aBaseName + wxT( ".html" ), &subdirs );
if( !fn.IsEmpty() )
{
// Prepend URI protocol since we will open in a browser
fn = wxT( "file://" ) + fn;
break;
}
fn = FindFileInSearchPaths( ss, aBaseName + wxT( ".pdf" ), &subdirs );
if( !fn.IsEmpty() )
break;
subdirs.RemoveAt( subdirs.GetCount() - 1 );
altsubdirs.RemoveAt( altsubdirs.GetCount() - 1 );
}
return fn;
return helpFile;
}

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@ -166,9 +166,8 @@ int COMMON_CONTROL::ShowPlayer( const TOOL_EVENT& aEvent )
int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
{
const SEARCH_STACK& search = m_frame->sys_search();
wxString helpFile;
wxString msg;
wxString helpFile;
wxString msg;
/* We have to get document for beginners,
* or the full specific doc
@ -188,7 +187,7 @@ int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
// or "Getting_Started_in_KiCad.html" or "Getting_Started_in_KiCad.pdf"
for( auto& name : names )
{
helpFile = SearchHelpFileFullPath( search, name );
helpFile = SearchHelpFileFullPath( name );
if( !helpFile.IsEmpty() )
break;
@ -196,7 +195,7 @@ int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
if( !helpFile )
{
msg = wxString::Format( _( "Html or pdf help file \n%s\nor\n%s could not be found." ),
msg = wxString::Format( _( "Help file \"%s\" or\n\"%s\" could not be found." ),
names[0], names[1] );
wxMessageBox( msg );
return -1;
@ -206,7 +205,7 @@ int COMMON_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
{
wxString base_name = m_frame->help_name();
helpFile = SearchHelpFileFullPath( search, base_name );
helpFile = SearchHelpFileFullPath( base_name );
if( !helpFile )
{

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@ -57,24 +57,17 @@ int ProcessExecute( const wxString& aCommandLine, int aFlags = wxEXEC_ASYNC,
/**
* Return the help file's full path.
* <p>
* Return the KiCad help file with path and extension.
* Help files can be html (.html ext) or pdf (.pdf ext) files.
* A \<BaseName\>.html file is searched and if not found,
* \<BaseName\>.pdf file is searched in the same path.
* If the help file for the current locale is not found, an attempt to find
* the English version of the help file is made.
* Help file is searched in directories in this order:
* help/\<canonical name\> like help/en_GB
* help/\<short name\> like help/en
* help/en
* </p>
* @param aSearchStack contains some possible base dirs that may be above the
* the one actually holding @a aBaseName. These are starting points for nested searches.
* @param aBaseName is the name of the help file to search for, <p>without extension</p>.
* @return wxEmptyString is returned if aBaseName is not found, else the full path & filename.
*
* Return the full path and name (including extension) of the given KiCad help file. It is expected
* to be found in a subfolder help/\<_LANG_\>/ in one of the system paths. Supported file types are
* *.html and *.pdf. If no such file is available for the current locale, an attempt to find the
* English version is made. The search order for \<_LANG_\> is: 1) canonical form (e.g., "fr_FR"),
* 2) short form (e.g., "fr"), and 3) "en".
*
* @param aBaseName is the name of the help file to search for (without extension).
* @return the full path and filename if \a aBaseName is found, else wxEmptyString.
*/
wxString SearchHelpFileFullPath( const SEARCH_STACK& aSearchStack, const wxString& aBaseName );
wxString SearchHelpFileFullPath( const wxString& aBaseName );
/**
* Make \a aTargetFullFileName absolute and create the path of this file if it doesn't yet exist.