ncurses 5.9 - patch 20150328

[ncurses.git] / ncurses / base / lib_slkset.c

diff --git a/ncurses/base/lib_slkset.c b/ncurses/base/lib_slkset.c
index 595a8ad1b9b34c0e3463e4f4c446dcae5216c42b..9091e001a91d63d9ea7a622cc493bda6b29967fc 100644 (file)
--- a/ncurses/base/lib_slkset.c
+++ b/ncurses/base/lib_slkset.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2001,2003 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2011,2012 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 +38,119 @@
 #include <curses.priv.h>
 #include <ctype.h>
 
-MODULE_ID("$Id: lib_slkset.c,v 1.10 2003/04/12 21:32:16 tom Exp $")
+#if USE_WIDEC_SUPPORT
+#if HAVE_WCTYPE_H
+#include <wctype.h>
+#endif
+#endif
+
+MODULE_ID("$Id: lib_slkset.c,v 1.24 2012/12/08 23:09:25 tom Exp $")
 
 NCURSES_EXPORT(int)
-slk_set(int i, const char *astr, int format)
+NCURSES_SP_NAME(slk_set) (NCURSES_SP_DCLx int i, const char *astr, int format)
 {
-    SLK *slk = SP->_slk;
-    size_t len;
-    int offset;
+    SLK *slk;
+    int offset = 0;
+    int numchrs;
+    int numcols;
+    int limit;
     const char *str = astr;
     const char *p;
 
-    T((T_CALLED("slk_set(%d, \"%s\", %d)"), i, str, format));
+    T((T_CALLED("slk_set(%p, %d, \"%s\", %d)"), (void *) SP_PARM, i, str, format));
 
-    if (slk == NULL || i < 1 || i > slk->labcnt || format < 0 || format > 2)
+    if (SP_PARM == 0
+       || (slk = SP_PARM->_slk) == 0
+       || i < 1
+       || i > slk->labcnt
+       || format < 0
+       || format > 2)
        returnCode(ERR);
-    if (str == NULL)
+    if (str == 0)
        str = "";
+    --i;                       /* Adjust numbering of labels */
 
+    limit = MAX_SKEY_LEN(SP_PARM->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 = (int) (p - str);
+#else
     while (isprint(UChar(*p)))
        p++;                    /* The first non-print stops */
 
-    --i;                       /* Adjust numbering of labels */
+    numcols = (int) (p - str);
+    if (numcols > limit)
+       numcols = limit;
+    numchrs = numcols;
+#endif
 
-    len = (size_t) (p - str);
-    if (len > (size_t) slk->maxlen)
-       len = slk->maxlen;
-    if (len == 0)
-       slk->ent[i].ent_text[0] = 0;
-    else
-       strncpy(slk->ent[i].ent_text, str, len)[len] = 0;
-    memset(slk->ent[i].form_text, ' ', (unsigned) slk->maxlen);
-    slk->ent[i].ent_text[slk->maxlen] = 0;
+    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,
+                                                     (size_t) (limit +
+                                                               numchrs + 1))
+       ) == 0)
+       returnCode(ERR);
 
     switch (format) {
-    default:
     case 0:                    /* left-justified */
        offset = 0;
        break;
     case 1:                    /* centered */
-       offset = (slk->maxlen - len) / 2;
+       offset = (limit - numcols) / 2;
        break;
     case 2:                    /* right-justified */
-       offset = slk->maxlen - len;
+       offset = limit - numcols;
        break;
     }
+    if (offset <= 0)
+       offset = 0;
+    else
+       memset(slk->ent[i].form_text, ' ', (size_t) offset);
+
     memcpy(slk->ent[i].form_text + offset,
           slk->ent[i].ent_text,
-          len);
-    slk->ent[i].form_text[slk->maxlen] = 0;
+          (size_t) numchrs);
+
+    if (offset < limit) {
+       memset(slk->ent[i].form_text + offset + numchrs,
+              ' ',
+              (size_t) (limit - (offset + numcols)));
+    }
+
+    slk->ent[i].form_text[numchrs - numcols + limit] = 0;
     slk->ent[i].dirty = TRUE;
     returnCode(OK);
 }
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+slk_set(int i, const char *astr, int format)
+{
+    return NCURSES_SP_NAME(slk_set) (CURRENT_SCREEN, i, astr, format);
+}
+#endif