ref: e447c9fb929e61a40203b0193ee8d4cab8d72f7e
dir: /DoConfig/fltk/src/Fl_Native_File_Chooser_WIN32.cxx/
// "$Id$"
//
// FLTK native OS file chooser widget
//
// Copyright 1998-2014 by Bill Spitzak and others.
// Copyright 2004 Greg Ercolano.
// API changes + filter improvements by Nathan Vander Wilt 2005
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems to:
//
// http://www.fltk.org/str.php
//
// Any application to multi-folder implementation:
// http://www.codeproject.com/dialog/selectfolder.asp
//
#ifndef FL_DOXYGEN // PREVENT DOXYGEN'S USE OF THIS FILE
#include <FL/Enumerations.H>
#if FLTK_ABI_VERSION < 10304
#define _ofn_ptr (&_ofn)
#define _binf_ptr (&_binf)
#endif
# include <stdlib.h> // malloc
# include <stdio.h> // sprintf
#include <wchar.h>
#include "Fl_Native_File_Chooser_common.cxx" // strnew/strfree/strapp/chrcat
#define FNFC_MAX_PATH 32768 // XXX: MAX_PATH under win32 is 260, too small for modern use
#include <FL/Fl_Native_File_Chooser.H>
static LPCWSTR utf8towchar(const char *in);
static char *wchartoutf8(LPCWSTR in);
#include <FL/x.H> // for fl_open_display
#define LCURLY_CHR '{'
#define RCURLY_CHR '}'
#define LBRACKET_CHR '['
#define RBRACKET_CHR ']'
// STATIC: PRINT WINDOWS 'DOUBLE NULL' STRING (DEBUG)
#ifdef DEBUG
#include <stdio.h>
static void dnullprint(char *wp) {
if ( ! wp ) return;
for ( int t=0; true; t++ ) {
if ( wp[t] == '\0' && wp[t+1] == '\0' ) {
printf("\\0\\0");
fflush(stdout);
return;
} else if ( wp[t] == '\0' ) {
printf("\\0");
} else {
printf("%c",wp[t]);
}
}
}
#endif
// RETURN LENGTH OF DOUBLENULL STRING
// Includes single nulls in count, excludes trailing doublenull.
//
// 1234 567
// |||/\|||
// IN: "one\0two\0\0"
// OUT: 7
//
static int dnulllen(const char *wp) {
int len = 0;
while ( ! ( *(wp+0) == 0 && *(wp+1) == 0 ) ) {
++wp;
++len;
}
return(len);
}
// STATIC: Append a string to another, leaving terminated with DOUBLE NULL.
// Automatically handles extending length of string.
// wp can be NULL (a new wp will be allocated and initialized).
// string must be NULL terminated.
// The pointer wp may be modified on return.
//
static void dnullcat(char*&wp, const char *string, int n = -1 ) {
//DEBUG printf("DEBUG: dnullcat IN: <"); dnullprint(wp); printf(">\n");
size_t inlen = ( n < 0 ) ? strlen(string) : n;
if ( ! wp ) {
wp = new char[inlen + 4];
*(wp+0) = '\0';
*(wp+1) = '\0';
} else {
int wplen = dnulllen(wp);
// Make copy of wp into larger buffer
char *tmp = new char[wplen + inlen + 4];
memcpy(tmp, wp, wplen+2); // copy of wp plus doublenull
delete[] wp; // delete old wp
wp = tmp; // use new copy
//DEBUG printf("DEBUG: dnullcat COPY: <"); dnullprint(wp); printf("> (wplen=%d)\n", wplen);
}
// Find end of double null string
// *wp2 is left pointing at second null.
//
char *wp2 = wp;
if ( *(wp2+0) != '\0' && *(wp2+1) != '\0' ) {
for ( ; 1; wp2++ ) {
if ( *(wp2+0) == '\0' && *(wp2+1) == '\0' ) {
wp2++;
break;
}
}
}
if ( n == -1 ) n = (int) strlen(string);
strncpy(wp2, string, n);
// Leave string double-null terminated
*(wp2+n+0) = '\0';
*(wp2+n+1) = '\0';
//DEBUG printf("DEBUG: dnullcat OUT: <"); dnullprint(wp); printf(">\n\n");
}
// CTOR
Fl_Native_File_Chooser::Fl_Native_File_Chooser(int val) {
_btype = val;
_options = NO_OPTIONS;
#if FLTK_ABI_VERSION >= 10304
_ofn_ptr = new OPENFILENAMEW;
_binf_ptr = new BROWSEINFOW;
_wpattern = 0;
#endif
memset((void*)_ofn_ptr, 0, sizeof(OPENFILENAMEW));
_ofn_ptr->lStructSize = sizeof(OPENFILENAMEW);
_ofn_ptr->hwndOwner = NULL;
memset((void*)_binf_ptr, 0, sizeof(BROWSEINFOW));
_pathnames = NULL;
_tpathnames = 0;
_directory = NULL;
_title = NULL;
_filter = NULL;
_parsedfilt = NULL;
_nfilters = 0;
_preset_file = NULL;
_errmsg = NULL;
}
// DTOR
Fl_Native_File_Chooser::~Fl_Native_File_Chooser() {
//_pathnames // managed by clear_pathnames()
//_tpathnames // managed by clear_pathnames()
_directory = strfree(_directory);
_title = strfree(_title);
_filter = strfree(_filter);
//_parsedfilt // managed by clear_filters()
//_nfilters // managed by clear_filters()
_preset_file = strfree(_preset_file);
_errmsg = strfree(_errmsg);
clear_filters();
clear_pathnames();
ClearOFN();
ClearBINF();
#if FLTK_ABI_VERSION >= 10304
delete _binf_ptr;
delete _ofn_ptr;
if ( _wpattern ) delete[] _wpattern;
#endif
}
// SET TYPE OF BROWSER
void Fl_Native_File_Chooser::type(int val) {
_btype = val;
}
// GET TYPE OF BROWSER
int Fl_Native_File_Chooser::type() const {
return( _btype );
}
// SET OPTIONS
void Fl_Native_File_Chooser::options(int val) {
_options = val;
}
// GET OPTIONS
int Fl_Native_File_Chooser::options() const {
return(_options);
}
// PRIVATE: SET ERROR MESSAGE
void Fl_Native_File_Chooser::errmsg(const char *val) {
_errmsg = strfree(_errmsg);
_errmsg = strnew(val);
}
// FREE PATHNAMES ARRAY, IF IT HAS ANY CONTENTS
void Fl_Native_File_Chooser::clear_pathnames() {
if ( _pathnames ) {
while ( --_tpathnames >= 0 ) {
_pathnames[_tpathnames] = strfree(_pathnames[_tpathnames]);
}
delete[] _pathnames;
_pathnames = NULL;
}
_tpathnames = 0;
}
// SET A SINGLE PATHNAME
void Fl_Native_File_Chooser::set_single_pathname(const char *s) {
clear_pathnames();
_pathnames = new char*[1];
_pathnames[0] = strnew(s);
_tpathnames = 1;
}
// ADD PATHNAME TO EXISTING ARRAY
void Fl_Native_File_Chooser::add_pathname(const char *s) {
if ( ! _pathnames ) {
// Create first element in array
++_tpathnames;
_pathnames = new char*[_tpathnames];
} else {
// Grow array by 1
char **tmp = new char*[_tpathnames+1]; // create new buffer
memcpy((void*)tmp, (void*)_pathnames,
sizeof(char*)*_tpathnames); // copy old
delete[] _pathnames; // delete old
_pathnames = tmp; // use new
++_tpathnames;
}
_pathnames[_tpathnames-1] = strnew(s);
}
// FREE A PIDL (Pointer to IDentity List)
static void FreePIDL(LPITEMIDLIST pidl) {
IMalloc *imalloc = NULL;
if ( SUCCEEDED(SHGetMalloc(&imalloc)) ) {
imalloc->Free(pidl);
imalloc->Release();
imalloc = NULL;
}
}
// CLEAR MICROSOFT OFN (OPEN FILE NAME) CLASS
void Fl_Native_File_Chooser::ClearOFN() {
// Free any previously allocated lpstrFile before zeroing out _ofn_ptr
if ( _ofn_ptr->lpstrFile ) {
delete[] _ofn_ptr->lpstrFile;
_ofn_ptr->lpstrFile = NULL;
}
if ( _ofn_ptr->lpstrInitialDir ) {
delete[] (TCHAR*) _ofn_ptr->lpstrInitialDir; //msvc6 compilation fix
_ofn_ptr->lpstrInitialDir = NULL;
}
_ofn_ptr->lpstrFilter = NULL; // (deleted elsewhere)
int temp = _ofn_ptr->nFilterIndex; // keep the filter_value
memset((void*)_ofn_ptr, 0, sizeof(OPENFILENAMEW));
_ofn_ptr->lStructSize = sizeof(OPENFILENAMEW);
_ofn_ptr->nFilterIndex = temp;
}
// CLEAR MICROSOFT BINF (BROWSER INFO) CLASS
void Fl_Native_File_Chooser::ClearBINF() {
if ( _binf_ptr->pidlRoot ) {
FreePIDL((ITEMIDLIST*)_binf_ptr->pidlRoot);
_binf_ptr->pidlRoot = NULL;
}
memset((void*)_binf_ptr, 0, sizeof(BROWSEINFOW));
}
// CONVERT WINDOWS BACKSLASHES TO UNIX FRONTSLASHES
void Fl_Native_File_Chooser::Win2Unix(char *s) {
for ( ; *s; s++ )
if ( *s == '\\' ) *s = '/';
}
// CONVERT UNIX FRONTSLASHES TO WINDOWS BACKSLASHES
void Fl_Native_File_Chooser::Unix2Win(char *s) {
for ( ; *s; s++ )
if ( *s == '/' ) *s = '\\';
}
// SAVE THE CURRENT WORKING DIRECTORY
// Returns a malloc()ed copy of the cwd that can
// later be freed with RestoreCWD(). May return 0 on error.
//
static char *SaveCWD() {
char *thecwd = 0;
DWORD thecwdsz = GetCurrentDirectory(0,0);
if ( thecwdsz > 0 ) {
thecwd = (char*)malloc(thecwdsz);
if (GetCurrentDirectory(thecwdsz, thecwd) == 0 ) {
free(thecwd); thecwd = 0;
}
}
return thecwd;
}
// RESTORES THE CWD SAVED BY SaveCWD(), FREES STRING
// Always returns NULL (string was freed).
//
static void RestoreCWD(char *thecwd) {
if ( !thecwd ) return;
SetCurrentDirectory(thecwd);
free(thecwd);
}
// SHOW FILE BROWSER
int Fl_Native_File_Chooser::showfile() {
ClearOFN();
clear_pathnames();
size_t fsize = FNFC_MAX_PATH;
_ofn_ptr->Flags |= OFN_NOVALIDATE; // prevent disabling of front slashes
_ofn_ptr->Flags |= OFN_HIDEREADONLY; // hide goofy readonly flag
// USE NEW BROWSER
_ofn_ptr->Flags |= OFN_EXPLORER; // use newer explorer windows
_ofn_ptr->Flags |= OFN_ENABLESIZING; // allow window to be resized (hey, why not?)
_ofn_ptr->Flags |= OFN_NOCHANGEDIR; // XXX: docs say ineffective on XP/2K/NT, but set it anyway..
switch ( _btype ) {
case BROWSE_DIRECTORY:
case BROWSE_MULTI_DIRECTORY:
case BROWSE_SAVE_DIRECTORY:
abort(); // never happens: handled by showdir()
case BROWSE_FILE:
break;
case BROWSE_MULTI_FILE:
_ofn_ptr->Flags |= OFN_ALLOWMULTISELECT;
break;
case BROWSE_SAVE_FILE:
if ( options() & SAVEAS_CONFIRM && type() == BROWSE_SAVE_FILE ) {
_ofn_ptr->Flags |= OFN_OVERWRITEPROMPT;
}
break;
}
// SPACE FOR RETURNED FILENAME
_ofn_ptr->lpstrFile = new WCHAR[fsize];
_ofn_ptr->nMaxFile = (DWORD) fsize-1;
_ofn_ptr->lpstrFile[0] = 0;
_ofn_ptr->lpstrFile[1] = 0; // dnull
// PARENT WINDOW
_ofn_ptr->hwndOwner = GetForegroundWindow();
// DIALOG TITLE
if (_title) {
static WCHAR wtitle[200];
wcsncpy(wtitle, utf8towchar(_title), 200);
wtitle[200-1] = 0;
_ofn_ptr->lpstrTitle = wtitle;
} else {
_ofn_ptr->lpstrTitle = NULL;
}
// FILTER
if (_parsedfilt != NULL) { // to convert a null-containing char string into a widechar string
#if FLTK_ABI_VERSION >= 10304
// NEW
if ( !_wpattern ) _wpattern = new WCHAR[FNFC_MAX_PATH];
#else
// OLD
static WCHAR _wpattern[FNFC_MAX_PATH]; // yuck -- replace with managed class member
#endif
const char *p = _parsedfilt;
while(*(p + strlen(p) + 1) != 0) p += strlen(p) + 1;
p += strlen(p) + 2;
MultiByteToWideChar(CP_UTF8, 0, _parsedfilt, (int) (p - _parsedfilt), _wpattern, FNFC_MAX_PATH);
_ofn_ptr->lpstrFilter = _wpattern;
} else {
_ofn_ptr->lpstrFilter = NULL;
}
// PRESET FILE
// If set, supercedes _directory. See KB Q86920 for details
// XXX: this doesn't preselect the item in the listview.. why?
//
if ( _preset_file ) {
size_t len = strlen(_preset_file);
if ( len >= _ofn_ptr->nMaxFile ) {
char msg[80];
sprintf(msg, "preset_file() filename is too long: %ld is >=%ld", (long)len, (long)fsize);
return(-1);
}
wcscpy(_ofn_ptr->lpstrFile, utf8towchar(_preset_file));
// Unix2Win(_ofn_ptr->lpstrFile);
len = wcslen(_ofn_ptr->lpstrFile);
_ofn_ptr->lpstrFile[len+0] = 0; // multiselect needs dnull
_ofn_ptr->lpstrFile[len+1] = 0;
}
if ( _directory ) {
// PRESET DIR
// XXX: See KB Q86920 for doc bug:
// http://support.microsoft.com/default.aspx?scid=kb;en-us;86920
//
_ofn_ptr->lpstrInitialDir = new WCHAR[FNFC_MAX_PATH];
wcscpy((WCHAR *)_ofn_ptr->lpstrInitialDir, utf8towchar(_directory));
// Unix2Win((char*)_ofn_ptr->lpstrInitialDir);
}
// SAVE THE CURRENT DIRECTORY
// See above warning (XXX) for OFN_NOCHANGEDIR
//
char *save_cwd = SaveCWD(); // must be freed with RestoreCWD()
// OPEN THE DIALOG WINDOW
int err;
if ( _btype == BROWSE_SAVE_FILE ) {
err = GetSaveFileNameW(_ofn_ptr);
} else {
err = GetOpenFileNameW(_ofn_ptr);
}
// GET EXTENDED ERROR
int exterr = CommDlgExtendedError();
// RESTORE CURRENT DIRECTORY
RestoreCWD(save_cwd); save_cwd = 0; // also frees save_cwd
// ERROR OR CANCEL?
if ( err == 0 ) {
if ( exterr == 0 ) return(1); // user hit cancel
// Otherwise, an error occurred..
char msg[80];
sprintf(msg, "CommDlgExtendedError() code=%d", err);
errmsg(msg);
return(-1);
}
// PREPARE PATHNAMES FOR RETURN
switch ( _btype ) {
case BROWSE_FILE:
case BROWSE_SAVE_FILE:
set_single_pathname(wchartoutf8(_ofn_ptr->lpstrFile));
// Win2Unix(_pathnames[_tpathnames-1]);
break;
case BROWSE_MULTI_FILE: {
// EXTRACT MULTIPLE FILENAMES
const WCHAR *dirname = _ofn_ptr->lpstrFile;
size_t dirlen = wcslen(dirname);
if ( dirlen > 0 ) {
// WALK STRING SEARCHING FOR 'DOUBLE-NULL'
// eg. "/dir/name\0foo1\0foo2\0foo3\0\0"
//
char pathname[FNFC_MAX_PATH];
for ( const WCHAR *s = dirname + dirlen + 1;
*s; s+= (wcslen(s)+1)) {
strcpy(pathname, wchartoutf8(dirname));
strcat(pathname, "\\");
strcat(pathname, wchartoutf8(s));
add_pathname(pathname);
}
}
// XXX
// Work around problem where pasted forward-slash pathname
// into the file browser causes new "Explorer" interface
// not to grok forward slashes, passing back as a 'filename'..!
//
if ( _tpathnames == 0 ) {
add_pathname(wchartoutf8(dirname));
// Win2Unix(_pathnames[_tpathnames-1]);
}
break;
}
case BROWSE_DIRECTORY:
case BROWSE_MULTI_DIRECTORY:
case BROWSE_SAVE_DIRECTORY:
abort(); // never happens: handled by showdir()
}
return(0);
}
// Used by SHBrowseForFolder(), sets initial selected dir.
// Ref: Usenet: microsoft.public.vc.mfc, Dec 8 2000, 1:38p David Lowndes
// Subject: How to specify to select an initial folder .."
//
static int CALLBACK Dir_CB(HWND win, UINT msg, LPARAM param, LPARAM data) {
switch (msg) {
case BFFM_INITIALIZED:
if (data) ::SendMessageW(win, BFFM_SETSELECTIONW, TRUE, data);
break;
case BFFM_SELCHANGED:
TCHAR path[FNFC_MAX_PATH];
if ( SHGetPathFromIDList((ITEMIDLIST*)param, path) ) {
::SendMessage(win, BFFM_ENABLEOK, 0, 1);
} else {
// disable ok button if not a path
::SendMessage(win, BFFM_ENABLEOK, 0, 0);
}
break;
case BFFM_VALIDATEFAILED:
// we could pop up an annoying message here.
// also needs set ulFlags |= BIF_VALIDATE
break;
default:
break;
}
return(0);
}
// SHOW DIRECTORY BROWSER
int Fl_Native_File_Chooser::showdir() {
// initialize OLE only once
fl_open_display(); // init needed by BIF_USENEWUI
ClearBINF();
clear_pathnames();
// PARENT WINDOW
_binf_ptr->hwndOwner = GetForegroundWindow();
// DIALOG TITLE
//_binf_ptr->lpszTitle = _title ? _title : NULL;
if (_title) {
static WCHAR wtitle[256];
wcsncpy(wtitle, utf8towchar(_title), 256);
wtitle[255] = 0;
_binf_ptr->lpszTitle = wtitle;
} else {
_binf_ptr->lpszTitle = NULL;
}
// FLAGS
_binf_ptr->ulFlags = 0; // initialize
// TBD: make sure matches to runtime system, if need be.
//(what if _WIN32_IE doesn't match system? does the program not run?)
//
// TBD: match all 3 types of directories
//
// NOTE: *Don't* use BIF_SHAREABLE. It /disables/ mapped network shares
// from being visible in BROWSE_DIRECTORY mode. Walter Garm's comments:
//
// --- Garms, Walter (GE EntSol, Security) wrote:
// With your help I was able to solve the problem of the network drives.
// For Version 6.0, at least, the BIF_SHAREABLE flag seems to have the
// opposite sense: With BIF_SHAREABLE not set I see the mapped network
// drives, and with BIF_SHAREABLE set I do not.
// ---
#if defined(BIF_NONEWFOLDERBUTTON) // Version 6.0
if ( _btype == BROWSE_DIRECTORY ) _binf_ptr->ulFlags |= BIF_NONEWFOLDERBUTTON;
_binf_ptr->ulFlags |= BIF_USENEWUI | BIF_RETURNONLYFSDIRS;
#elif defined(BIF_USENEWUI) // Version 5.0
if ( _btype == BROWSE_DIRECTORY ) _binf_ptr->ulFlags |= BIF_EDITBOX;
else if ( _btype == BROWSE_SAVE_DIRECTORY ) _binf_ptr->ulFlags |= BIF_USENEWUI;
_binf_ptr->ulFlags |= BIF_RETURNONLYFSDIRS;
#elif defined(BIF_EDITBOX) // Version 4.71
_binf_ptr->ulFlags |= BIF_RETURNONLYFSDIRS | BIF_EDITBOX;
#else // Version Old
_binf_ptr->ulFlags |= BIF_RETURNONLYFSDIRS;
#endif
// BUFFER
//char displayname[FNFC_MAX_PATH];
WCHAR displayname[FNFC_MAX_PATH];
_binf_ptr->pszDisplayName = displayname;
// PRESET DIR
WCHAR presetname[FNFC_MAX_PATH];
if ( _directory ) {
// Unix2Win(presetname);
wcsncpy(presetname, utf8towchar(_directory), FNFC_MAX_PATH);
presetname[FNFC_MAX_PATH-1] = 0;
_binf_ptr->lParam = (LPARAM)presetname;
}
else _binf_ptr->lParam = 0;
_binf_ptr->lpfn = Dir_CB;
// OPEN BROWSER
LPITEMIDLIST pidl = SHBrowseForFolderW(_binf_ptr);
// CANCEL?
if ( pidl == NULL ) return(1);
// GET THE PATHNAME(S) THE USER SELECTED
// TBD: expand NetHood shortcuts from this PIDL??
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shbrowseforfolder.asp
WCHAR path[FNFC_MAX_PATH];
if ( SHGetPathFromIDListW(pidl, path) ) {
// Win2Unix(path);
//add_pathname(path);
add_pathname(wchartoutf8(path));
}
FreePIDL(pidl);
if ( !wcslen(path) ) return(1); // don't return empty pathnames
return(0);
}
// RETURNS:
// 0 - user picked a file
// 1 - user cancelled
// -1 - failed; errmsg() has reason
//
int Fl_Native_File_Chooser::show() {
int retval;
if ( _btype == BROWSE_DIRECTORY ||
_btype == BROWSE_MULTI_DIRECTORY ||
_btype == BROWSE_SAVE_DIRECTORY ) {
retval = showdir();
} else {
retval = showfile();
}
// restore the correct state of mouse buttons and keyboard modifier keys (STR #3221)
HWND h = GetForegroundWindow();
if (h) {
WNDPROC windproc = (WNDPROC)GetWindowLongPtrW(h, GWLP_WNDPROC);
CallWindowProc(windproc, h, WM_ACTIVATEAPP, 1, 0);
}
return retval;
}
// RETURN ERROR MESSAGE
const char *Fl_Native_File_Chooser::errmsg() const {
return(_errmsg ? _errmsg : "No error");
}
// GET FILENAME
const char* Fl_Native_File_Chooser::filename() const {
if ( _pathnames && _tpathnames > 0 ) return(_pathnames[0]);
return("");
}
// GET FILENAME FROM LIST OF FILENAMES
const char* Fl_Native_File_Chooser::filename(int i) const {
if ( _pathnames && i < _tpathnames ) return(_pathnames[i]);
return("");
}
// GET TOTAL FILENAMES CHOSEN
int Fl_Native_File_Chooser::count() const {
return(_tpathnames);
}
// PRESET PATHNAME
// Can be NULL if no preset is desired.
//
void Fl_Native_File_Chooser::directory(const char *val) {
_directory = strfree(_directory);
_directory = strnew(val);
}
// GET PRESET PATHNAME
// Can return NULL if none set.
//
const char *Fl_Native_File_Chooser::directory() const {
return(_directory);
}
// SET TITLE
// Can be NULL if no title desired.
//
void Fl_Native_File_Chooser::title(const char *val) {
_title = strfree(_title);
_title = strnew(val);
}
// GET TITLE
// Can return NULL if none set.
//
const char *Fl_Native_File_Chooser::title() const {
return(_title);
}
// SET FILTER
// Can be NULL if no filter needed
//
void Fl_Native_File_Chooser::filter(const char *val) {
_filter = strfree(_filter);
clear_filters();
if ( val ) {
_filter = strnew(val);
parse_filter(_filter);
}
add_filter("All Files", "*.*"); // always include 'all files' option
#ifdef DEBUG
dnullprint(_parsedfilt);
#endif /*DEBUG*/
}
// GET FILTER
// Can return NULL if none set.
//
const char *Fl_Native_File_Chooser::filter() const {
return(_filter);
}
// CLEAR FILTERS
void Fl_Native_File_Chooser::clear_filters() {
_nfilters = 0;
_parsedfilt = strfree(_parsedfilt);
}
// ADD A FILTER
void Fl_Native_File_Chooser::add_filter(const char *name_in, // name of filter (optional: can be null)
const char *winfilter) { // windows style filter (eg. "*.cxx;*.h")
// No name? Make one..
char name[1024];
if ( !name_in || name_in[0] == '\0' ) {
sprintf(name, "%.*s Files", int(sizeof(name)-10), winfilter);
} else {
if ((strlen(name_in)+strlen(winfilter)+3) < sizeof(name)) {
sprintf(name, "%s (%s)", name_in, winfilter);
} else {
sprintf(name, "%.*s", int(sizeof(name)), name_in);
}
}
dnullcat(_parsedfilt, name);
dnullcat(_parsedfilt, winfilter);
_nfilters++;
//DEBUG printf("DEBUG: ADD FILTER name=<%s> winfilter=<%s>\n", name, winfilter);
}
// RETURN HOW MANY DIFFERENT FILTERS WERE SPECIFIED
// In: "foo.[CH]" or "foo.{C,H}"
// Out: 2
//
static int count_filters(const char *filter) {
int count = 0;
char mode = 0;
const char *in = filter;
while (*in) {
switch(*in) {
case '\\': // escape next character
++in; if ( *in == 0 ) continue; // skip escape. EOL? done
++in; // skip escaped char
continue;
case LCURLY_CHR: // start "{aaa,bbb}"
mode = *in; // set mode, parse over curly
++count; // at least +1 wildcard
break;
case RCURLY_CHR: // end "{aaa,bbb}"
if ( mode == LCURLY_CHR ) // disable curly mode (if on)
mode = 0;
break;
case LBRACKET_CHR: // start "[xyz]"
mode = *in; // set mode, parse over bracket
break;
case RBRACKET_CHR: // end "[xyz]"
if ( mode == LBRACKET_CHR ) // disable bracket mode (if on)
mode = 0;
break;
default: // any other char
switch (mode) { // handle {} or [] modes
case LCURLY_CHR: // handle "{aaa,bbb}"
if (*in==',' || *in=='|') // ',' and '|' adds filters
++count;
break;
case LBRACKET_CHR: // handle "[xyz]"
++count; // all chars in []'s add new filter
break;
}
break;
}
++in; // parse past char
}
return count > 0 ? count : 1; // return at least 1
}
// CONVERT FLTK STYLE PATTERN MATCHES TO WINDOWS 'DOUBLENULL' PATTERN
// Returns with the parsed double-null result in '_parsedfilt'.
//
// Handles:
// IN OUT
// ----------- -----------------------------
// *.{ma,mb} "*.{ma,mb} Files\0*.ma;*.mb\0\0"
// *.[abc] "*.[abc] Files\0*.a;*.b;*.c\0\0"
// *.txt "*.txt Files\0*.txt\0\0"
// C Files\t*.[ch] "C Files\0*.c;*.h\0\0"
//
// Example:
// IN: "*.{ma,mb}"
// OUT: "*.ma;*.mb Files\0*.ma;*.mb\0All Files\0*.*\0\0"
// --------------- --------- --------- ---
// | | | |
// Title Wildcards Title Wildcards
//
// Parsing Mode:
// IN:"C Files\t*.{cxx,h}"
// ||||||| |||||||||
// mode: nnnnnnn ww{{{{{{{
// \_____/ \_______/
// Name Wildcard
//
void Fl_Native_File_Chooser::parse_filter(const char *in) {
clear_filters();
if ( ! in || in[0] == '\0' ) return;
int has_name = strchr(in, '\t') ? 1 : 0;
char mode = has_name ? 'n' : 'w'; // parse mode: n=name, w=wildcard
// whatever input string is, our output won't be much longer in length..
// use double length just for safety.
size_t slen = strlen(in);
char *wildprefix = new char[(slen+1)*2]; wildprefix[0] = 0;
char *comp = new char[(slen+1)*2]; comp[0] = 0;
char *name = new char[(slen+1)*2]; name[0] = 0;
// Init
int nwildcards = 0;
int maxfilters = count_filters(in) + 1; // count wildcard seps
char **wildcards = new char*[maxfilters]; // parsed wildcards (can be several)
int t;
for ( t=0; t<maxfilters; t++ ) {
wildcards[t] = new char[slen+1];
wildcards[t][0] = '\0';
}
// Parse
for ( ; 1; in++ ) {
//// DEBUG
//// printf("WORKING ON '%c': mode=<%c> name=<%s> wildprefix=<%s> nwildcards=%d wildcards[n]=<%s>\n",
//// *in, mode, name, wildprefix, nwildcards, wildcards[nwildcards]);
switch (*in) {
case ',':
case '|':
if ( mode == LCURLY_CHR ) {
// create new wildcard, copy in prefix
strcat(wildcards[nwildcards++], wildprefix);
continue;
} else {
goto regchar;
}
continue;
// FINISHED PARSING A NAME?
case '\t':
if ( mode != 'n' ) goto regchar;
// finish parsing name? switch to wildcard mode
mode = 'w';
break;
// ESCAPE NEXT CHAR
case '\\':
++in;
goto regchar;
// FINISHED PARSING ONE OF POSSIBLY SEVERAL FILTERS?
case '\r':
case '\n':
case '\0':
{
if ( mode == 'w' ) { // finished parsing wildcard?
if ( nwildcards == 0 ) {
strcpy(wildcards[nwildcards++], wildprefix);
}
// Append wildcards in Microsoft's "*.one;*.two" format
comp[0] = 0;
for ( t=0; t<nwildcards; t++ ) {
if ( t != 0 ) strcat(comp, ";");
strcat(comp, wildcards[t]);
}
// Add if not empty
if ( comp[0] ) {
add_filter(name, comp);
}
}
// RESET
for ( t=0; t<maxfilters; t++ ) {
wildcards[t][0] = '\0';
}
nwildcards = 0;
wildprefix[0] = name[0] = '\0';
mode = strchr(in,'\t') ? 'n' : 'w';
// DONE?
if ( *in == '\0' ) { // done
// Free everything
delete[] wildprefix;
delete[] comp;
delete[] name;
for ( t=0; t<maxfilters; t++ ) delete[] wildcards[t];
delete[] wildcards;
return;
}
continue; // not done yet, more filters
}
// STARTING A WILDCARD?
case LBRACKET_CHR:
case LCURLY_CHR:
mode = *in;
if ( *in == LCURLY_CHR ) {
// create new wildcard
strcat(wildcards[nwildcards++], wildprefix);
}
continue;
// ENDING A WILDCARD?
case RBRACKET_CHR:
case RCURLY_CHR:
mode = 'w'; // back to wildcard mode
continue;
// ALL OTHER NON-SPECIAL CHARACTERS
default:
regchar: // handle regular char
switch ( mode ) {
case LBRACKET_CHR:
// create new wildcard
++nwildcards;
// copy in prefix
strcpy(wildcards[nwildcards-1], wildprefix);
// append search char
chrcat(wildcards[nwildcards-1], *in);
continue;
case LCURLY_CHR:
if ( nwildcards > 0 ) {
chrcat(wildcards[nwildcards-1], *in);
}
continue;
case 'n':
chrcat(name, *in);
continue;
case 'w':
chrcat(wildprefix, *in);
for ( t=0; t<nwildcards; t++ ) {
chrcat(wildcards[t], *in);
}
continue;
}
break;
}
}
}
// SET 'CURRENTLY SELECTED FILTER'
void Fl_Native_File_Chooser::filter_value(int i) {
_ofn_ptr->nFilterIndex = i + 1;
}
// RETURN VALUE OF 'CURRENTLY SELECTED FILTER'
int Fl_Native_File_Chooser::filter_value() const {
return(_ofn_ptr->nFilterIndex ? _ofn_ptr->nFilterIndex-1 : _nfilters+1);
}
// PRESET FILENAME FOR 'SAVE AS' CHOOSER
void Fl_Native_File_Chooser::preset_file(const char* val) {
_preset_file = strfree(_preset_file);
_preset_file = strnew(val);
}
// GET PRESET FILENAME FOR 'SAVE AS' CHOOSER
const char* Fl_Native_File_Chooser::preset_file() const {
return(_preset_file);
}
int Fl_Native_File_Chooser::filters() const {
return(_nfilters);
}
static char *wchartoutf8(LPCWSTR in) {
static char *out = NULL;
static int lchar = 0;
if (in == NULL)return NULL;
int utf8len = WideCharToMultiByte(CP_UTF8, 0, in, -1, NULL, 0, NULL, NULL);
if (utf8len > lchar) {
lchar = utf8len;
out = (char *)realloc(out, lchar * sizeof(char));
}
WideCharToMultiByte(CP_UTF8, 0, in, -1, out, utf8len, NULL, NULL);
return out;
}
static LPCWSTR utf8towchar(const char *in) {
static WCHAR *wout = NULL;
static int lwout = 0;
if (in == NULL)return NULL;
int wlen = MultiByteToWideChar(CP_UTF8, 0, in, -1, NULL, 0);
if (wlen > lwout) {
lwout = wlen;
wout = (WCHAR *)realloc(wout, lwout * sizeof(WCHAR));
}
MultiByteToWideChar(CP_UTF8, 0, in, -1, wout, wlen);
return wout;
}
#endif /*!FL_DOXYGEN*/
//
// End of "$Id$".
//