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[wxWidgets.git] / src / richtext / richtexthtml.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/richtext/richtexthtml.cpp
3 // Purpose: HTML I/O for wxRichTextCtrl
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 2005-09-30
7 // Copyright: (c) Julian Smart
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 // For compilers that support precompilation, includes "wx.h".
12 #include "wx/wxprec.h"
13
14 #ifdef __BORLANDC__
15 #pragma hdrstop
16 #endif
17
18 #if wxUSE_RICHTEXT
19
20 #include "wx/richtext/richtexthtml.h"
21 #include "wx/richtext/richtextstyles.h"
22
23 #ifndef WX_PRECOMP
24 #endif
25
26 #include "wx/filename.h"
27 #include "wx/wfstream.h"
28 #include "wx/txtstrm.h"
29
30 #if wxUSE_FILESYSTEM
31 #include "wx/filesys.h"
32 #include "wx/fs_mem.h"
33 #endif
34
35 IMPLEMENT_DYNAMIC_CLASS(wxRichTextHTMLHandler, wxRichTextFileHandler)
36
37 int wxRichTextHTMLHandler::sm_fileCounter = 1;
38
39 wxRichTextHTMLHandler::wxRichTextHTMLHandler(const wxString& name, const wxString& ext, int type)
40 : wxRichTextFileHandler(name, ext, type), m_buffer(NULL), m_font(false), m_inTable(false)
41 {
42 m_fontSizeMapping.Add(8);
43 m_fontSizeMapping.Add(10);
44 m_fontSizeMapping.Add(13);
45 m_fontSizeMapping.Add(17);
46 m_fontSizeMapping.Add(22);
47 m_fontSizeMapping.Add(30);
48 m_fontSizeMapping.Add(100);
49 }
50
51 /// Can we handle this filename (if using files)? By default, checks the extension.
52 bool wxRichTextHTMLHandler::CanHandle(const wxString& filename) const
53 {
54 wxString path, file, ext;
55 wxFileName::SplitPath(filename, & path, & file, & ext);
56
57 return (ext.Lower() == wxT("html") || ext.Lower() == wxT("htm"));
58 }
59
60
61 #if wxUSE_STREAMS
62 bool wxRichTextHTMLHandler::DoLoadFile(wxRichTextBuffer *WXUNUSED(buffer), wxInputStream& WXUNUSED(stream))
63 {
64 return false;
65 }
66
67 /*
68 * We need to output only _changes_ in character formatting.
69 */
70
71 bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
72 {
73 m_buffer = buffer;
74
75 ClearTemporaryImageLocations();
76
77 wxRichTextDrawingContext context(buffer);
78 buffer->Defragment(context);
79
80 #if wxUSE_UNICODE
81 wxCSConv* customEncoding = NULL;
82 wxMBConv* conv = NULL;
83 if (!GetEncoding().IsEmpty())
84 {
85 customEncoding = new wxCSConv(GetEncoding());
86 if (!customEncoding->IsOk())
87 {
88 wxDELETE(customEncoding);
89 }
90 }
91 if (customEncoding)
92 conv = customEncoding;
93 else
94 conv = & wxConvUTF8;
95 #endif
96
97 {
98 #if wxUSE_UNICODE
99 wxTextOutputStream str(stream, wxEOL_NATIVE, *conv);
100 #else
101 wxTextOutputStream str(stream, wxEOL_NATIVE);
102 #endif
103
104 wxRichTextAttr currentParaStyle = buffer->GetAttributes();
105 wxRichTextAttr currentCharStyle = buffer->GetAttributes();
106
107 if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
108 str << wxT("<html><head></head><body>\n");
109
110 OutputFont(currentParaStyle, str);
111
112 m_font = false;
113 m_inTable = false;
114
115 m_indents.Clear();
116 m_listTypes.Clear();
117
118 wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
119 while (node)
120 {
121 wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
122 wxASSERT (para != NULL);
123
124 if (para)
125 {
126 wxRichTextAttr paraStyle(para->GetCombinedAttributes());
127
128 BeginParagraphFormatting(currentParaStyle, paraStyle, str);
129
130 wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
131 while (node2)
132 {
133 wxRichTextObject* obj = node2->GetData();
134 wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
135 if (textObj && !textObj->IsEmpty())
136 {
137 wxRichTextAttr charStyle(para->GetCombinedAttributes(obj->GetAttributes()));
138 BeginCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
139
140 wxString text = textObj->GetText();
141
142 if (charStyle.HasTextEffects() && (charStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_CAPITALS))
143 text.MakeUpper();
144
145 wxString toReplace = wxRichTextLineBreakChar;
146 text.Replace(toReplace, wxT("<br>"));
147
148 str << text;
149
150 EndCharacterFormatting(currentCharStyle, charStyle, paraStyle, str);
151 }
152
153 wxRichTextImage* image = wxDynamicCast(obj, wxRichTextImage);
154 if( image && (!image->IsEmpty() || image->GetImageBlock().GetData()))
155 WriteImage( image, stream );
156
157 node2 = node2->GetNext();
158 }
159
160 EndParagraphFormatting(currentParaStyle, paraStyle, str);
161
162 str << wxT("\n");
163 }
164 node = node->GetNext();
165 }
166
167 CloseLists(-1, str);
168
169 str << wxT("</font>");
170
171 if ((GetFlags() & wxRICHTEXT_HANDLER_NO_HEADER_FOOTER) == 0)
172 str << wxT("</body></html>");
173
174 str << wxT("\n");
175 }
176
177 #if wxUSE_UNICODE
178 if (customEncoding)
179 delete customEncoding;
180 #endif
181
182 m_buffer = NULL;
183
184 return true;
185 }
186
187 void wxRichTextHTMLHandler::BeginCharacterFormatting(const wxRichTextAttr& currentStyle, const wxRichTextAttr& thisStyle, const wxRichTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& str)
188 {
189 wxString style;
190
191 // Is there any change in the font properties of the item?
192 if (thisStyle.GetFontFaceName() != currentStyle.GetFontFaceName())
193 {
194 wxString faceName(thisStyle.GetFontFaceName());
195 style += wxString::Format(wxT(" face=\"%s\""), faceName.c_str());
196 }
197 if (thisStyle.GetFontSize() != currentStyle.GetFontSize())
198 style += wxString::Format(wxT(" size=\"%ld\""), PtToSize(thisStyle.GetFontSize()));
199
200 bool bTextColourChanged = (thisStyle.GetTextColour() != currentStyle.GetTextColour());
201 bool bBackgroundColourChanged = (thisStyle.GetBackgroundColour() != currentStyle.GetBackgroundColour());
202 if (bTextColourChanged || bBackgroundColourChanged)
203 {
204 style += wxT(" style=\"");
205
206 if (bTextColourChanged)
207 {
208 wxString color(thisStyle.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX));
209 style += wxString::Format(wxT("color: %s"), color.c_str());
210 }
211 if (bTextColourChanged && bBackgroundColourChanged)
212 style += wxT(";");
213 if (bBackgroundColourChanged)
214 {
215 wxString color(thisStyle.GetBackgroundColour().GetAsString(wxC2S_HTML_SYNTAX));
216 style += wxString::Format(wxT("background-color: %s"), color.c_str());
217 }
218
219 style += wxT("\"");
220 }
221
222 if (style.size())
223 {
224 str << wxString::Format(wxT("<font %s >"), style.c_str());
225 m_font = true;
226 }
227
228 if (thisStyle.GetFontWeight() == wxFONTWEIGHT_BOLD)
229 str << wxT("<b>");
230 if (thisStyle.GetFontStyle() == wxFONTSTYLE_ITALIC)
231 str << wxT("<i>");
232 if (thisStyle.GetFontUnderlined())
233 str << wxT("<u>");
234
235 if (thisStyle.HasURL())
236 str << wxT("<a href=\"") << thisStyle.GetURL() << wxT("\">");
237
238 if (thisStyle.HasTextEffects())
239 {
240 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_STRIKETHROUGH)
241 str << wxT("<del>");
242 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_SUPERSCRIPT)
243 str << wxT("<sup>");
244 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_SUBSCRIPT)
245 str << wxT("<sub>");
246 }
247 }
248
249 void wxRichTextHTMLHandler::EndCharacterFormatting(const wxRichTextAttr& WXUNUSED(currentStyle), const wxRichTextAttr& thisStyle, const wxRichTextAttr& WXUNUSED(paraStyle), wxTextOutputStream& stream)
250 {
251 if (thisStyle.HasURL())
252 stream << wxT("</a>");
253
254 if (thisStyle.GetFontUnderlined())
255 stream << wxT("</u>");
256 if (thisStyle.GetFontStyle() == wxFONTSTYLE_ITALIC)
257 stream << wxT("</i>");
258 if (thisStyle.GetFontWeight() == wxFONTWEIGHT_BOLD)
259 stream << wxT("</b>");
260
261 if (thisStyle.HasTextEffects())
262 {
263 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_STRIKETHROUGH)
264 stream << wxT("</del>");
265 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_SUPERSCRIPT)
266 stream << wxT("</sup>");
267 if (thisStyle.GetTextEffects() & wxTEXT_ATTR_EFFECT_SUBSCRIPT)
268 stream << wxT("</sub>");
269 }
270
271 if (m_font)
272 {
273 m_font = false;
274 stream << wxT("</font>");
275 }
276 }
277
278 /// Begin paragraph formatting
279 void wxRichTextHTMLHandler::BeginParagraphFormatting(const wxRichTextAttr& WXUNUSED(currentStyle), const wxRichTextAttr& thisStyle, wxTextOutputStream& str)
280 {
281 if (thisStyle.HasPageBreak())
282 {
283 str << wxT("<div style=\"page-break-after:always\"></div>\n");
284 }
285
286 if (thisStyle.HasLeftIndent() && thisStyle.GetLeftIndent() != 0)
287 {
288 if (thisStyle.HasBulletStyle())
289 {
290 int indent = thisStyle.GetLeftIndent();
291
292 // Close levels high than this
293 CloseLists(indent, str);
294
295 if (m_indents.GetCount() > 0 && indent == m_indents.Last())
296 {
297 // Same level, no need to start a new list
298 }
299 else if (m_indents.GetCount() == 0 || indent > m_indents.Last())
300 {
301 m_indents.Add(indent);
302
303 wxString tag;
304 int listType = TypeOfList(thisStyle, tag);
305 m_listTypes.Add(listType);
306
307 // wxHTML needs an extra <p> before a list when using <p> ... </p> in previous paragraphs.
308 // TODO: pass a flag that indicates we're using wxHTML.
309 str << wxT("<p>\n");
310
311 str << tag;
312 }
313
314 str << wxT("<li> ");
315 }
316 else
317 {
318 CloseLists(-1, str);
319
320 wxString align = GetAlignment(thisStyle);
321 str << wxString::Format(wxT("<p align=\"%s\""), align.c_str());
322
323 wxString styleStr;
324
325 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
326 {
327 float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;
328
329 styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
330 }
331 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
332 {
333 float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;
334
335 styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
336 }
337
338 float indentLeftMM = (thisStyle.GetLeftIndent() + thisStyle.GetLeftSubIndent())/10.0;
339 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (indentLeftMM > 0.0))
340 {
341 styleStr += wxString::Format(wxT("margin-left: %.2fmm; "), indentLeftMM);
342 }
343 float indentRightMM = thisStyle.GetRightIndent()/10.0;
344 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasRightIndent() && (indentRightMM > 0.0))
345 {
346 styleStr += wxString::Format(wxT("margin-right: %.2fmm; "), indentRightMM);
347 }
348 // First line indentation
349 float firstLineIndentMM = - thisStyle.GetLeftSubIndent() / 10.0;
350 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && (firstLineIndentMM > 0.0))
351 {
352 styleStr += wxString::Format(wxT("text-indent: %.2fmm; "), firstLineIndentMM);
353 }
354
355 if (!styleStr.IsEmpty())
356 str << wxT(" style=\"") << styleStr << wxT("\"");
357
358 str << wxT(">");
359
360 // TODO: convert to pixels
361 int indentPixels = static_cast<int>(indentLeftMM*10/4);
362
363 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0)
364 {
365 // Use a table to do indenting if we don't have CSS
366 str << wxString::Format(wxT("<table border=0 cellpadding=0 cellspacing=0><tr><td width=\"%d\"></td><td>"), indentPixels);
367 m_inTable = true;
368 }
369
370 if (((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) == 0) && (thisStyle.GetLeftSubIndent() < 0))
371 {
372 str << SymbolicIndent( - thisStyle.GetLeftSubIndent());
373 }
374 }
375 }
376 else
377 {
378 CloseLists(-1, str);
379
380 wxString align = GetAlignment(thisStyle);
381 str << wxString::Format(wxT("<p align=\"%s\""), align.c_str());
382
383 wxString styleStr;
384
385 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingBefore())
386 {
387 float spacingBeforeMM = thisStyle.GetParagraphSpacingBefore() / 10.0;
388
389 styleStr += wxString::Format(wxT("margin-top: %.2fmm; "), spacingBeforeMM);
390 }
391 if ((GetFlags() & wxRICHTEXT_HANDLER_USE_CSS) && thisStyle.HasParagraphSpacingAfter())
392 {
393 float spacingAfterMM = thisStyle.GetParagraphSpacingAfter() / 10.0;
394
395 styleStr += wxString::Format(wxT("margin-bottom: %.2fmm; "), spacingAfterMM);
396 }
397
398 if (!styleStr.IsEmpty())
399 str << wxT(" style=\"") << styleStr << wxT("\"");
400
401 str << wxT(">");
402 }
403 OutputFont(thisStyle, str);
404 }
405
406 /// End paragraph formatting
407 void wxRichTextHTMLHandler::EndParagraphFormatting(const wxRichTextAttr& WXUNUSED(currentStyle), const wxRichTextAttr& thisStyle, wxTextOutputStream& stream)
408 {
409 if (thisStyle.HasFont())
410 stream << wxT("</font>");
411
412 if (m_inTable)
413 {
414 stream << wxT("</td></tr></table></p>\n");
415 m_inTable = false;
416 }
417 else if (!thisStyle.HasBulletStyle())
418 stream << wxT("</p>\n");
419 }
420
421 /// Closes lists to level (-1 means close all)
422 void wxRichTextHTMLHandler::CloseLists(int level, wxTextOutputStream& str)
423 {
424 // Close levels high than this
425 int i = m_indents.GetCount()-1;
426 while (i >= 0)
427 {
428 int l = m_indents[i];
429 if (l > level)
430 {
431 if (m_listTypes[i] == 0)
432 str << wxT("</ol>");
433 else
434 str << wxT("</ul>");
435 m_indents.RemoveAt(i);
436 m_listTypes.RemoveAt(i);
437 }
438 else
439 break;
440 i --;
441 }
442 }
443
444 /// Output font tag
445 void wxRichTextHTMLHandler::OutputFont(const wxRichTextAttr& style, wxTextOutputStream& stream)
446 {
447 if (style.HasFont())
448 {
449 stream << wxString::Format(wxT("<font face=\"%s\" size=\"%ld\""), style.GetFontFaceName().c_str(), PtToSize(style.GetFontSize()));
450 if (style.HasTextColour())
451 stream << wxString::Format(wxT(" color=\"%s\""), style.GetTextColour().GetAsString(wxC2S_HTML_SYNTAX).c_str());
452 stream << wxT(" >");
453 }
454 }
455
456 int wxRichTextHTMLHandler::TypeOfList( const wxRichTextAttr& thisStyle, wxString& tag )
457 {
458 // We can use number attribute of li tag but not all the browsers support it.
459 // also wxHtmlWindow doesn't support type attribute.
460
461 bool m_is_ul = false;
462 if (thisStyle.GetBulletStyle() == (wxTEXT_ATTR_BULLET_STYLE_ARABIC|wxTEXT_ATTR_BULLET_STYLE_PERIOD))
463 tag = wxT("<ol type=\"1\">");
464 else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_UPPER)
465 tag = wxT("<ol type=\"A\">");
466 else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_LETTERS_LOWER)
467 tag = wxT("<ol type=\"a\">");
468 else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_UPPER)
469 tag = wxT("<ol type=\"I\">");
470 else if (thisStyle.GetBulletStyle() == wxTEXT_ATTR_BULLET_STYLE_ROMAN_LOWER)
471 tag = wxT("<ol type=\"i\">");
472 else
473 {
474 tag = wxT("<ul>");
475 m_is_ul = true;
476 }
477
478 if (m_is_ul)
479 return 1;
480 else
481 return 0;
482 }
483
484 wxString wxRichTextHTMLHandler::GetAlignment( const wxRichTextAttr& thisStyle )
485 {
486 switch( thisStyle.GetAlignment() )
487 {
488 case wxTEXT_ALIGNMENT_LEFT:
489 return wxT("left");
490 case wxTEXT_ALIGNMENT_RIGHT:
491 return wxT("right");
492 case wxTEXT_ALIGNMENT_CENTER:
493 return wxT("center");
494 case wxTEXT_ALIGNMENT_JUSTIFIED:
495 return wxT("justify");
496 default:
497 return wxT("left");
498 }
499 }
500
501 void wxRichTextHTMLHandler::WriteImage(wxRichTextImage* image, wxOutputStream& stream)
502 {
503 wxTextOutputStream str(stream);
504
505 str << wxT("<img src=\"");
506
507 #if wxUSE_FILESYSTEM
508 if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
509 {
510 #if 0
511 if (!image->GetImage().IsOk() && image->GetImageBlock().GetData())
512 image->LoadFromBlock();
513 if (image->GetImage().IsOk() && !image->GetImageBlock().GetData())
514 image->MakeBlock();
515 #endif
516
517 if (image->GetImageBlock().IsOk())
518 {
519 wxImage img;
520 image->GetImageBlock().Load(img);
521 if (img.IsOk())
522 {
523 wxString ext(image->GetImageBlock().GetExtension());
524 wxString tempFilename(wxString::Format(wxT("image%d.%s"), sm_fileCounter, ext.c_str()));
525 wxMemoryFSHandler::AddFile(tempFilename, img, image->GetImageBlock().GetImageType());
526
527 m_imageLocations.Add(tempFilename);
528
529 str << wxT("memory:") << tempFilename;
530 }
531 }
532 else
533 str << wxT("memory:?");
534
535 sm_fileCounter ++;
536 }
537 else if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
538 {
539 #if 0
540 if (!image->GetImage().IsOk() && image->GetImageBlock().GetData())
541 image->LoadFromBlock();
542 if (image->GetImage().IsOk() && !image->GetImageBlock().GetData())
543 image->MakeBlock();
544 #endif
545
546 if (image->GetImageBlock().IsOk())
547 {
548 wxString tempDir(GetTempDir());
549 if (tempDir.IsEmpty())
550 tempDir = wxFileName::GetTempDir();
551
552 wxString ext(image->GetImageBlock().GetExtension());
553 wxString tempFilename(wxString::Format(wxT("%s/image%d.%s"), tempDir.c_str(), sm_fileCounter, ext.c_str()));
554 image->GetImageBlock().Write(tempFilename);
555
556 m_imageLocations.Add(tempFilename);
557
558 str << wxFileSystem::FileNameToURL(tempFilename);
559 }
560 else
561 str << wxT("file:?");
562
563 sm_fileCounter ++;
564 }
565 else // if (GetFlags() & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_BASE64) // this is implied
566 #endif
567 {
568 str << wxT("data:");
569 str << GetMimeType(image->GetImageBlock().GetImageType());
570 str << wxT(";base64,");
571 #if 0
572 if (image->GetImage().IsOk() && !image->GetImageBlock().GetData())
573 image->MakeBlock();
574 #endif
575 if (image->GetImageBlock().IsOk())
576 {
577 wxChar* data = b64enc( image->GetImageBlock().GetData(), image->GetImageBlock().GetDataSize() );
578 str << data;
579
580 delete[] data;
581 }
582 }
583
584 str << wxT("\" />");
585 }
586
587 long wxRichTextHTMLHandler::PtToSize(long size)
588 {
589 int i;
590 int len = m_fontSizeMapping.GetCount();
591 for (i = 0; i < len; i++)
592 if (size <= m_fontSizeMapping[i])
593 return i+1;
594 return 7;
595 }
596
597 wxString wxRichTextHTMLHandler::SymbolicIndent(long indent)
598 {
599 wxString in;
600 for(;indent > 0; indent -= 20)
601 in.Append( wxT("&nbsp;") );
602 return in;
603 }
604
605 const wxChar* wxRichTextHTMLHandler::GetMimeType(int imageType)
606 {
607 switch(imageType)
608 {
609 case wxBITMAP_TYPE_BMP:
610 return wxT("image/bmp");
611 case wxBITMAP_TYPE_TIFF:
612 return wxT("image/tiff");
613 case wxBITMAP_TYPE_GIF:
614 return wxT("image/gif");
615 case wxBITMAP_TYPE_PNG:
616 return wxT("image/png");
617 case wxBITMAP_TYPE_JPEG:
618 return wxT("image/jpeg");
619 default:
620 return wxT("image/unknown");
621 }
622 }
623
624 // exim-style base64 encoder
625 wxChar* wxRichTextHTMLHandler::b64enc( unsigned char* input, size_t in_len )
626 {
627 // elements of enc64 array must be 8 bit values
628 // otherwise encoder will fail
629 // hmmm.. Does wxT macro define a char as 16 bit value
630 // when compiling with UNICODE option?
631 static const wxChar enc64[] = wxT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
632 wxChar* output = new wxChar[4*((in_len+2)/3)+1];
633 wxChar* p = output;
634
635 while( in_len-- > 0 )
636 {
637 register wxChar a, b;
638
639 a = *input++;
640
641 *p++ = enc64[ (a >> 2) & 0x3f ];
642
643 if( in_len-- == 0 )
644 {
645 *p++ = enc64[ (a << 4 ) & 0x30 ];
646 *p++ = '=';
647 *p++ = '=';
648 break;
649 }
650
651 b = *input++;
652
653 *p++ = enc64[(( a << 4 ) | ((b >> 4) &0xf )) & 0x3f];
654
655 if( in_len-- == 0 )
656 {
657 *p++ = enc64[ (b << 2) & 0x3f ];
658 *p++ = '=';
659 break;
660 }
661
662 a = *input++;
663
664 *p++ = enc64[ ((( b << 2 ) & 0x3f ) | ((a >> 6)& 0x3)) & 0x3f ];
665
666 *p++ = enc64[ a & 0x3f ];
667 }
668 *p = 0;
669
670 return output;
671 }
672 #endif
673 // wxUSE_STREAMS
674
675 /// Delete the in-memory or temporary files generated by the last operation
676 bool wxRichTextHTMLHandler::DeleteTemporaryImages()
677 {
678 return DeleteTemporaryImages(GetFlags(), m_imageLocations);
679 }
680
681 /// Delete the in-memory or temporary files generated by the last operation
682 bool wxRichTextHTMLHandler::DeleteTemporaryImages(int flags, const wxArrayString& imageLocations)
683 {
684 size_t i;
685 for (i = 0; i < imageLocations.GetCount(); i++)
686 {
687 wxString location = imageLocations[i];
688
689 if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_MEMORY)
690 {
691 #if wxUSE_FILESYSTEM
692 wxMemoryFSHandler::RemoveFile(location);
693 #endif
694 }
695 else if (flags & wxRICHTEXT_HANDLER_SAVE_IMAGES_TO_FILES)
696 {
697 if (wxFileExists(location))
698 wxRemoveFile(location);
699 }
700 }
701
702 return true;
703 }
704
705
706 #endif
707 // wxUSE_RICHTEXT
708
wxWidgets (Impactor)