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tetex-bin  3.0
lib_slkset.c
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00001 /****************************************************************************
00002  * Copyright (c) 1998-2001,2003 Free Software Foundation, Inc.              *
00003  *                                                                          *
00004  * Permission is hereby granted, free of charge, to any person obtaining a  *
00005  * copy of this software and associated documentation files (the            *
00006  * "Software"), to deal in the Software without restriction, including      *
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00008  * distribute, distribute with modifications, sublicense, and/or sell       *
00009  * copies of the Software, and to permit persons to whom the Software is    *
00010  * furnished to do so, subject to the following conditions:                 *
00011  *                                                                          *
00012  * The above copyright notice and this permission notice shall be included  *
00013  * in all copies or substantial portions of the Software.                   *
00014  *                                                                          *
00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
00016  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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00018  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
00019  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
00020  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
00021  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
00022  *                                                                          *
00023  * Except as contained in this notice, the name(s) of the above copyright   *
00024  * holders shall not be used in advertising or otherwise to promote the     *
00025  * sale, use or other dealings in this Software without prior written       *
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00028 
00029 /****************************************************************************
00030  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
00031  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
00032  ****************************************************************************/
00033 
00034 /*
00035  *     lib_slkset.c
00036  *      Set soft label text.
00037  */
00038 #include <curses.priv.h>
00039 #include <ctype.h>
00040 
00041 MODULE_ID("$Id: lib_slkset.c,v 1.10 2003/04/12 21:32:16 tom Exp $")
00042 
00043 NCURSES_EXPORT(int)
00044 slk_set(int i, const char *astr, int format)
00045 {
00046     SLK *slk = SP->_slk;
00047     size_t len;
00048     int offset;
00049     const char *str = astr;
00050     const char *p;
00051 
00052     T((T_CALLED("slk_set(%d, \"%s\", %d)"), i, str, format));
00053 
00054     if (slk == NULL || i < 1 || i > slk->labcnt || format < 0 || format > 2)
00055        returnCode(ERR);
00056     if (str == NULL)
00057        str = "";
00058 
00059     while (isspace(UChar(*str)))
00060        str++;               /* skip over leading spaces  */
00061     p = str;
00062     while (isprint(UChar(*p)))
00063        p++;                 /* The first non-print stops */
00064 
00065     --i;                    /* Adjust numbering of labels */
00066 
00067     len = (size_t) (p - str);
00068     if (len > (size_t) slk->maxlen)
00069        len = slk->maxlen;
00070     if (len == 0)
00071        slk->ent[i].ent_text[0] = 0;
00072     else
00073        strncpy(slk->ent[i].ent_text, str, len)[len] = 0;
00074     memset(slk->ent[i].form_text, ' ', (unsigned) slk->maxlen);
00075     slk->ent[i].ent_text[slk->maxlen] = 0;
00076 
00077     switch (format) {
00078     default:
00079     case 0:                 /* left-justified */
00080        offset = 0;
00081        break;
00082     case 1:                 /* centered */
00083        offset = (slk->maxlen - len) / 2;
00084        break;
00085     case 2:                 /* right-justified */
00086        offset = slk->maxlen - len;
00087        break;
00088     }
00089     memcpy(slk->ent[i].form_text + offset,
00090           slk->ent[i].ent_text,
00091           len);
00092     slk->ent[i].form_text[slk->maxlen] = 0;
00093     slk->ent[i].dirty = TRUE;
00094     returnCode(OK);
00095 }