/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2005,2007 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 *
****************************************************************************/
/****************************************************************************
- * 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 *
****************************************************************************/
/*
#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 1.17 2007/10/13 20:08:46 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;
+ 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 (SP == 0
+ || (slk = SP->_slk) == 0
+ || 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);
}