1 /* $OpenBSD: lib_insch.c,v 1.3 2010/01/12 23:22:05 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 * and: Sven Verdoolaege * 35 * and: Thomas E. Dickey * 36 ****************************************************************************/ 37 38 /* 39 ** lib_insch.c 40 ** 41 ** The routine winsch(). 42 ** 43 */ 44 45 #include <curses.priv.h> 46 #include <ctype.h> 47 48 MODULE_ID("$Id: lib_insch.c,v 1.3 2010/01/12 23:22:05 nicm Exp $") 49 50 /* 51 * Insert the given character, updating the current location to simplify 52 * inserting a string. 53 */ 54 NCURSES_EXPORT(int) 55 _nc_insert_ch(WINDOW *win, chtype ch) 56 { 57 int code = OK; 58 NCURSES_CH_T wch; 59 int count; 60 NCURSES_CONST char *s; 61 62 switch (ch) { 63 case '\t': 64 for (count = (TABSIZE - (win->_curx % TABSIZE)); count > 0; count--) { 65 if ((code = _nc_insert_ch(win, ' ')) != OK) 66 break; 67 } 68 break; 69 case '\n': 70 case '\r': 71 case '\b': 72 SetChar2(wch, ch); 73 _nc_waddch_nosync(win, wch); 74 break; 75 default: 76 if ( 77 #if USE_WIDEC_SUPPORT 78 WINDOW_EXT(win, addch_used) == 0 && 79 #endif 80 is8bits(ChCharOf(ch)) && 81 isprint(ChCharOf(ch))) { 82 if (win->_curx <= win->_maxx) { 83 struct ldat *line = &(win->_line[win->_cury]); 84 NCURSES_CH_T *end = &(line->text[win->_curx]); 85 NCURSES_CH_T *temp1 = &(line->text[win->_maxx]); 86 NCURSES_CH_T *temp2 = temp1 - 1; 87 88 SetChar2(wch, ch); 89 90 CHANGED_TO_EOL(line, win->_curx, win->_maxx); 91 while (temp1 > end) 92 *temp1-- = *temp2--; 93 94 *temp1 = _nc_render(win, wch); 95 win->_curx++; 96 } 97 } else if (is8bits(ChCharOf(ch)) && iscntrl(ChCharOf(ch))) { 98 s = unctrl(ChCharOf(ch)); 99 while (*s != '\0') { 100 code = _nc_insert_ch(win, ChAttrOf(ch) | UChar(*s)); 101 if (code != OK) 102 break; 103 ++s; 104 } 105 } 106 #if USE_WIDEC_SUPPORT 107 else { 108 /* 109 * Handle multibyte characters here 110 */ 111 SetChar2(wch, ch); 112 wch = _nc_render(win, wch); 113 count = _nc_build_wch(win, &wch); 114 if (count > 0) { 115 code = wins_wch(win, &wch); 116 } else if (count == -1) { 117 /* handle EILSEQ */ 118 if (is8bits(ch)) { 119 s = unctrl(ChCharOf(ch)); 120 while (*s != '\0') { 121 code = _nc_insert_ch(win, ChAttrOf(ch) | UChar(*s)); 122 if (code != OK) 123 break; 124 ++s; 125 } 126 } else { 127 code = ERR; 128 } 129 } 130 } 131 #endif 132 break; 133 } 134 return code; 135 } 136 137 NCURSES_EXPORT(int) 138 winsch(WINDOW *win, chtype c) 139 { 140 NCURSES_SIZE_T oy; 141 NCURSES_SIZE_T ox; 142 int code = ERR; 143 144 T((T_CALLED("winsch(%p, %s)"), win, _tracechtype(c))); 145 146 if (win != 0) { 147 oy = win->_cury; 148 ox = win->_curx; 149 150 code = _nc_insert_ch(win, c); 151 152 win->_curx = ox; 153 win->_cury = oy; 154 _nc_synchook(win); 155 } 156 returnCode(code); 157 } 158