X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/d082ac49971a1c1a9e84c5b201c30aab675f154f..27311cc77360e186bdfe9618193d531d0ea4e00d:/mac/macucs.c

diff --git a/mac/macucs.c b/mac/macucs.c
index dfb3f63f..f2c850bb 100644
--- a/mac/macucs.c
+++ b/mac/macucs.c
@@ -1,4 +1,4 @@
-/* $Id: macucs.c,v 1.1 2002/11/19 02:13:46 ben Exp $ */
+/* $Id$ */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -6,26 +6,39 @@
 
 #include <time.h>
 #include "putty.h"
+#include "charset.h"
 #include "terminal.h"
 #include "misc.h"
+#include "mac.h"
 
 /*
  * Mac Unicode-handling routines.
  * 
- * FIXME: currently trivial stub versions assuming all codepages
- * are ISO8859-1.
- *
+ * BJH:
  * What we _should_ do is to use the Text Encoding Conversion Manager
  * when it's available, and have our own routines for converting to
  * standard Mac OS scripts when it's not.  Support for ATSUI might be
  * nice, too.
- */
+ *
+ * I (OSD) am unsure any of the above is necessary if we just use
+ * libcharset */
 
+/*
+ * Determine whether a byte is the first byte of a double-byte
+ * character in a system character set.  Only MI use is by clipme()
+ * when copying direct-to-font text to the clipboard.
+ */
 int is_dbcs_leadbyte(int codepage, char byte)
 {
     return 0;			       /* we don't do DBCS */
 }
 
+/*
+ * Convert from Unicode to a system character set.  MI uses are:
+ * (1) by lpage_send(), whose only MI use is to convert the answerback
+ * string to Unicode, and
+ * (2) by clipme() when copying direct-to-font text to the clipboard.
+ */
 int mb_to_wc(int codepage, int flags, char *mbstr, int mblen,
 	     wchar_t *wcstr, int wclen)
 {
@@ -37,8 +50,13 @@ int mb_to_wc(int codepage, int flags, char *mbstr, int mblen,
     return ret;			       /* FIXME: check error codes! */
 }
 
+/*
+ * Convert from a system character set to Unicode.  Used by luni_send
+ * to convert Unicode into the line character set.
+ */
 int wc_to_mb(int codepage, int flags, wchar_t *wcstr, int wclen,
-	     char *mbstr, int mblen, char *defchr, int *defused)
+	     char *mbstr, int mblen, char *defchr, int *defused,
+	     struct unicode_data *ucsdata)
 {
     int ret = 0;
     if (defused)
@@ -59,18 +77,63 @@ int wc_to_mb(int codepage, int flags, wchar_t *wcstr, int wclen,
     return ret;			       /* FIXME: check error codes! */
 }
 
-void init_ucs(void)
+/* Character conversion array,
+ * the xterm one has the four scanlines that have no unicode 2.0
+ * equivalents mapped to their unicode 3.0 locations.
+ */
+static const wchar_t unitab_xterm_std[32] = {
+    0x2666, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
+    0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,
+    0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,
+    0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x0020
+};
+
+void init_ucs(Session *s)
 {
     int i;
+
+    s->ucsdata.line_codepage = decode_codepage(s->cfg.line_codepage);
+
     /* Find the line control characters. FIXME: this is not right. */
     for (i = 0; i < 256; i++)
 	if (i < ' ' || (i >= 0x7F && i < 0xA0))
-	    unitab_ctrl[i] = i;
+	    s->ucsdata.unitab_ctrl[i] = i;
 	else
-	    unitab_ctrl[i] = 0xFF;
+	    s->ucsdata.unitab_ctrl[i] = 0xFF;
 
-    for (i = 0; i < 256; i++) {
-	unitab_line[i] = unitab_scoacs[i] = i;
-	unitab_xterm[i] = (i >= 0x5F && i < 0x7F) ? ((i+1) & 0x1F) : i;
-    }
+    for (i = 0; i < 256; i++)
+	s->ucsdata.unitab_line[i] = s->ucsdata.unitab_scoacs[i] = i;
+
+    /* VT100 graphics - NB: Broken for non-ascii CP's */
+    memcpy(s->ucsdata.unitab_xterm, s->ucsdata.unitab_line,
+	   sizeof(s->ucsdata.unitab_xterm));
+    memcpy(s->ucsdata.unitab_xterm + '`', unitab_xterm_std,
+	   sizeof(unitab_xterm_std));
+    s->ucsdata.unitab_xterm['_'] = ' ';
+
+}
+
+int decode_codepage(char *cp_name)
+{
+    if (!*cp_name)
+	return CS_NONE;		       /* use font encoding */
+    return charset_from_localenc(cp_name);
+}
+
+char const *cp_enumerate (int index)
+{
+    int charset;
+    if (index == 0)
+	return "Use font encoding";
+    charset = charset_localenc_nth(index-1);
+    if (charset == CS_NONE)
+	return NULL;
+    return charset_to_localenc(charset);
+}
+
+char const *cp_name(int codepage)
+{
+    if (codepage == CS_NONE)
+	return "Use font encoding";
+    return charset_to_localenc(codepage);
 }