X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_slkset.c;h=9379b36322e2a12ddbbe4b64ef47b7d7d0b92263;hp=27471add77fa97c3f07788f654f34305b1b4b815;hb=2639531af0c3ca25b48e7bcb9c790fa566cc5892;hpb=0eb88fc5281804773e2a0c7a488a4452463535ce

diff --git a/ncurses/base/lib_slkset.c b/ncurses/base/lib_slkset.c
index 27471add..9379b363 100644
--- a/ncurses/base/lib_slkset.c
+++ b/ncurses/base/lib_slkset.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright (c) 1998-2004,2005 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -27,8 +27,8 @@
  ****************************************************************************/
 
 /****************************************************************************
- *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
- *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *  Author: Juergen Pfeifer                                                 *
+ *     and: Thomas E. Dickey                                                *
  ****************************************************************************/
 
 /*
@@ -38,58 +38,107 @@
 #include <curses.priv.h>
 #include <ctype.h>
 
-MODULE_ID("$Id: lib_slkset.c,v 1.3 1998/02/11 12:13:56 tom Exp $")
+#if USE_WIDEC_SUPPORT
+#if HAVE_WCTYPE_H
+#include <wctype.h>
+#endif
+#endif
 
-int
+MODULE_ID("$Id: lib_slkset.c,v 1.16 2006/12/17 19:47:09 tom Exp $")
+
+NCURSES_EXPORT(int)
 slk_set(int i, const char *astr, int format)
 {
-SLK *slk = SP->_slk;
-size_t len;
-const char *str = astr;
-const char *p;
-
-	T((T_CALLED("slk_set(%d, \"%s\", %d)"), i, str, format));
-
-	if (slk == NULL || i < 1 || i > slk->labcnt || format < 0 || format > 2)
-		returnCode(ERR);
-	if (str == NULL)
-		str = "";
-
-	while (isspace(*str)) str++; /* skip over leading spaces  */
-	p = str;
-	while (isprint(*p)) p++;     /* The first non-print stops */
-
-	--i; /* Adjust numbering of labels */
-
-	len = (size_t)(p - str);
-	if (len > (unsigned)slk->maxlen)
-	  len = slk->maxlen;
-	if (len==0)
-	  slk->ent[i].text[0] = 0;
-	else
-	  (void) strncpy(slk->ent[i].text, str, len);
-	memset(slk->ent[i].form_text,' ', (unsigned)slk->maxlen);
-	slk->ent[i].text[slk->maxlen] = 0;
-	/* len = strlen(slk->ent[i].text); */
-
-	switch(format) {
-	case 0: /* left-justified */
-		memcpy(slk->ent[i].form_text,
-		       slk->ent[i].text,
-		       len);
-		break;
-	case 1: /* centered */
-		memcpy(slk->ent[i].form_text+(slk->maxlen - len)/2,
-		       slk->ent[i].text,
-		       len);
-		break;
-	case 2: /* right-justified */
-		memcpy(slk->ent[i].form_text+ slk->maxlen - len,
-		       slk->ent[i].text,
-		       len);
-		break;
-	}
-	slk->ent[i].form_text[slk->maxlen] = 0;
-	slk->ent[i].dirty = TRUE;
-	returnCode(OK);
+    SLK *slk = SP->_slk;
+    int offset;
+    int numchrs;
+    int numcols;
+    int limit;
+    const char *str = astr;
+    const char *p;
+
+    T((T_CALLED("slk_set(%d, \"%s\", %d)"), i, str, format));
+
+    if (slk == NULL || i < 1 || i > slk->labcnt || format < 0 || format > 2)
+	returnCode(ERR);
+    if (str == NULL)
+	str = "";
+    --i;			/* Adjust numbering of labels */
+
+    limit = MAX_SKEY_LEN(SP->slk_format);
+    while (isspace(UChar(*str)))
+	str++;			/* skip over leading spaces  */
+    p = str;
+
+#if USE_WIDEC_SUPPORT
+    numcols = 0;
+    while (*p != 0) {
+	mbstate_t state;
+	wchar_t wc;
+	size_t need;
+
+	init_mb(state);
+	need = mbrtowc(0, p, strlen(p), &state);
+	if (need == (size_t) -1)
+	    break;
+	mbrtowc(&wc, p, need, &state);
+	if (!iswprint((wint_t) wc))
+	    break;
+	if (wcwidth(wc) + numcols > limit)
+	    break;
+	numcols += wcwidth(wc);
+	p += need;
+    }
+    numchrs = (p - str);
+#else
+    while (isprint(UChar(*p)))
+	p++;			/* The first non-print stops */
+
+    numcols = (p - str);
+    if (numcols > limit)
+	numcols = limit;
+    numchrs = numcols;
+#endif
+
+    FreeIfNeeded(slk->ent[i].ent_text);
+    if ((slk->ent[i].ent_text = strdup(str)) == 0)
+	returnCode(ERR);
+    slk->ent[i].ent_text[numchrs] = '\0';
+
+    if ((slk->ent[i].form_text = (char *) _nc_doalloc(slk->ent[i].form_text,
+						      (unsigned) (limit +
+								  numchrs + 1))
+	) == 0)
+	returnCode(ERR);
+
+    switch (format) {
+    default:
+    case 0:			/* left-justified */
+	offset = 0;
+	break;
+    case 1:			/* centered */
+	offset = (limit - numcols) / 2;
+	break;
+    case 2:			/* right-justified */
+	offset = limit - numcols;
+	break;
+    }
+    if (offset <= 0)
+	offset = 0;
+    else
+	memset(slk->ent[i].form_text, ' ', (unsigned) offset);
+
+    memcpy(slk->ent[i].form_text + offset,
+	   slk->ent[i].ent_text,
+	   (unsigned) numchrs);
+
+    if (offset < limit) {
+	memset(slk->ent[i].form_text + offset + numchrs,
+	       ' ',
+	       (unsigned) (limit - (offset + numcols)));
+    }
+
+    slk->ent[i].form_text[numchrs - numcols + limit] = 0;
+    slk->ent[i].dirty = TRUE;
+    returnCode(OK);
 }