Use the Unicode Converter to convert from Unicode to the display encoding

if it's available.  Linking against the static Unicode Converter library
costs us about 30k on Classic 68K, which I can live with.

Because the default fallback converter can generate multiple output
characters for a single input character, we provide our own fallback that
doesn't.  It converts everything to '?' instead.

[originally from svn r2315]

mac/README.mac

@@ -1,4 +1,4 @@
-$Id: README.mac,v 1.1 2002/12/11 18:34:49 ben Exp $
+$Id: README.mac,v 1.2 2002/12/13 00:02:48 ben Exp $
 
 Information about PuTTY for the Mac OS
 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
@@ -7,9 +7,25 @@ Compiling it:
 
  See ../README for generic information.
 
- I compile PuTTY using MPW, with Universal Headers 3.4.2.  The
- "mkputty.mpw" script does most of the work, but currently needs you
- to run "Rez -append -o PuTTY mac_res.r {Includes}" to get the
+ To compile PuTTY for Mac OS you will need:
+
+ MPW
+  <ftp://ftp.apple.com/developer/Tool_Chest/Core_Mac_OS_Tools/MPW_etc./
+   MPW-GM_Images/MPW-GM.img.bin>
+
+ Universal Headers (optional)
+  <ftp://ftp.apple.com/developer/Development_Kits/
+   UniversalHeaders3.4.2.img.bin>
+
+ Text Encoding Converter SDK
+  <ftp://ftp.apple.com/developer/Development_Kits/TEC_1.5.sit.hqx>
+
+ Install MPW, install the new Universal Headers (optional), then put
+ the contents of the "68K Static Libraries" directory of the Text
+ Encoding Converter SDK into "Interfaces&Libraries:Libraries:Libraries".
+
+ The "mkputty.mpw" script does most of the work, but currently needs
+ you to run "Rez -append -o PuTTY mac_res.r {Includes}" to get the
  resources compiled in.  The Makefile currently only generates a
  Classic 68K application.  Other architectures will come later.
 

mac/mac.c

@@ -1,4 +1,4 @@
-/* $Id: mac.c,v 1.6 2002/12/10 01:11:40 ben Exp $ */
+/* $Id: mac.c,v 1.7 2002/12/13 00:02:48 ben Exp $ */
 /*
  * Copyright (c) 1999 Ben Harris
  * All rights reserved.
@@ -42,7 +42,9 @@
 #include <Gestalt.h>
 #include <Resources.h>
 #include <Script.h>
+#include <TextCommon.h>
 #include <ToolUtils.h>
+#include <UnicodeConverter.h>
 
 #include <assert.h>
 #include <limits.h>
@@ -100,6 +102,7 @@ int main (int argc, char **argv) {
 
 static void mac_startup(void) {
     Handle menuBar;
+    TECInfoHandle ti;
 
     /* Init Memory Manager */
     MaxApplZone();
@@ -142,6 +145,19 @@ static void mac_startup(void) {
     /* Mac OS 8.5 Window Manager? */
     if (Gestalt(gestaltWindowMgrAttr, &mac_gestalts.windattr) != noErr)
 	mac_gestalts.windattr = 0;
+    /* Text Encoding Conversion Manager? */
+    if (
+#if TARGET_RT_MAC_CFM
+	&TECGetInfo == kUnresolvedCFragSymbolAddress ||
+#else
+	InitializeUnicodeConverter(NULL) != noErr ||
+#endif
+	TECGetInfo(&ti) != noErr)
+	mac_gestalts.encvvers = 0;
+    else {
+	mac_gestalts.encvvers = (*ti)->tecVersion;
+	DisposeHandle((Handle)ti);
+    }
 
     /* We've been tested with the Appearance Manager */
     if (mac_gestalts.apprvers != 0)
@@ -548,6 +564,8 @@ static void mac_adjustcursor(RgnHandle cursrgn) {
 
 static void mac_shutdown(void) {
 
+    if (mac_gestalts.encvvers != 0)
+	TerminateUnicodeConverter();
     exit(0);
 }
 

mac/mac.h

@@ -10,6 +10,7 @@
 #include <Gestalt.h>
 #include <MacWindows.h>
 #include <Palettes.h>
+#include <UnicodeConverter.h>
 
 struct mac_gestalts {
     long sysvers;
@@ -17,6 +18,7 @@ struct mac_gestalts {
     long apprvers;
     long cntlattr;
     long windattr;
+    long encvvers;
 };
 
 extern struct mac_gestalts mac_gestalts;
@@ -64,6 +66,7 @@ typedef struct {
     ControlHandle	scrollbar;
     WCTabHandle		wctab;
     int			raw_mouse;
+    UnicodeToTextInfo	uni_to_font;
 } Session;
 
 #endif

mac/macterm.c

@@ -1,4 +1,4 @@
-/* $Id: macterm.c,v 1.22 2002/12/09 23:26:52 ben Exp $ */
+/* $Id: macterm.c,v 1.23 2002/12/13 00:02:48 ben Exp $ */
 /*
  * Copyright (c) 1999 Simon Tatham
  * Copyright (c) 1999, 2002 Ben Harris
@@ -46,8 +46,10 @@
 #include <Scrap.h>
 #include <Script.h>
 #include <Sound.h>
+#include <TextCommon.h>
 #include <Threads.h>
 #include <ToolUtils.h>
+#include <UnicodeConverter.h>
 
 #include <assert.h>
 #include <limits.h>
@@ -75,6 +77,10 @@
 			    (y) / s->font_height)
 
 static void mac_initfont(Session *);
+static pascal OSStatus uni_to_font_fallback(UniChar *, ByteCount, ByteCount *,
+					    TextPtr, ByteCount, ByteCount *,
+					    LogicalAddress *,
+					    ConstUnicodeMappingPtr);
 static void mac_initpalette(Session *);
 static void mac_adjustwinbg(Session *);
 static void mac_adjustsize(Session *, int, int);
@@ -180,10 +186,14 @@ void mac_newsession(void) {
     term_out(s->term);
 }
 
+static UnicodeToTextFallbackUPP uni_to_font_fallback_upp;
+
 static void mac_initfont(Session *s) {
     Str255 macfont;
     FontInfo fi;
- 
+    TextEncoding enc;
+    OSStatus err;
+
     SetPort(s->window);
     macfont[0] = sprintf((char *)&macfont[1], "%s", s->cfg.font);
     GetFNum(macfont, &s->fontnum);
@@ -200,9 +210,46 @@ static void mac_initfont(Session *s) {
 	s->font_boldadjust = s->font_width - CharWidth('W');
     } else
 	s->font_boldadjust = 0;
+
+    if (s->uni_to_font != NULL)
+	DisposeUnicodeToTextInfo(&s->uni_to_font);
+    if (mac_gestalts.encvvers == 0 ||
+	UpgradeScriptInfoToTextEncoding(kTextScriptDontCare,
+					kTextLanguageDontCare,
+					kTextRegionDontCare, macfont,
+					&enc) != noErr ||
+	CreateUnicodeToTextInfoByEncoding(enc, &s->uni_to_font) != noErr) {
+	s->uni_to_font = NULL;
+    } else {
+	if (uni_to_font_fallback_upp == NULL)
+	    uni_to_font_fallback_upp =
+		NewUnicodeToTextFallbackProc(&uni_to_font_fallback);
+	if (SetFallbackUnicodeToText(s->uni_to_font,
+	    uni_to_font_fallback_upp, 
+	    kUnicodeFallbackCustomOnly | kUnicodeFallbackInterruptSafeMask,
+	    NULL) != noErr) {
+	    DisposeUnicodeToTextInfo(&s->uni_to_font);
+	    s->uni_to_font = NULL;
+	}
+    }
+
     mac_adjustsize(s, s->term->rows, s->term->cols);
 }
 
+static pascal OSStatus uni_to_font_fallback(UniChar *ucp,
+    ByteCount ilen, ByteCount *iusedp, TextPtr obuf, ByteCount olen,
+    ByteCount *ousedp, LogicalAddress *cookie, ConstUnicodeMappingPtr mapping)
+{
+
+    if (olen < 1)
+	return kTECOutputBufferFullStatus;
+    *obuf = '?';
+    *iusedp = ilen;
+    *ousedp = 1;
+    return noErr;
+}
+
+
 /*
  * To be called whenever the window size changes.
  * rows and cols should be desired values.
@@ -879,6 +926,11 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     int style = 0;
     struct do_text_args a;
     RgnHandle textrgn;
+    char mactextbuf[1024];
+    UniChar unitextbuf[1024];
+    int i;
+
+    assert(len <= 1024);
 
     SetPort(s->window);
     
@@ -890,6 +942,20 @@ void do_text(Context ctx, int x, int y, char *text, int len,
     if (!RectInRgn(&a.textrect, s->window->visRgn))
 	return;
 
+    if (s->uni_to_font != NULL) {
+	ByteCount iread, olen;
+	OSStatus err;
+
+	for (i = 0; i < len; i++)
+	    unitextbuf[i] = (unsigned char)text[i] | (attr & CSET_MASK);
+	err = ConvertFromUnicodeToText(s->uni_to_font, len * sizeof(UniChar),
+				       unitextbuf, kUnicodeUseFallbacksMask,
+				       0, NULL, NULL, NULL,
+				       1024, &iread, &olen, mactextbuf);
+	if (err == noErr || err == kTECUsedFallbacksStatus)
+	    text = mactextbuf; len = olen;
+    }
+
     a.s = s;
     a.text = text;
     a.len = len;

mkfiles.pl

@@ -601,7 +601,8 @@ Libs_68K =	 "{CLibraries}StdCLib.o" \xb6
 		"{Libraries}Interface.o" \xb6
 		"{Libraries}OpenTransport.o" \xb6
 		"{Libraries}OpenTransportApp.o" \xb6
-		"{Libraries}OpenTptInet.o"
+		"{Libraries}OpenTptInet.o" \xb6
+		"{Libraries}UnicodeConverterLib.far.o"
 
 Libs_PPC =	"{SharedLibraries}InterfaceLib" \xb6
 		"{SharedLibraries}StdCLib" \xb6