1 /**************************************************************************** 2 * Copyright (c) 2004-2009,2016 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Thomas E. Dickey * 31 ****************************************************************************/ 32 33 /* 34 ** lib_insnstr.c 35 ** 36 ** The routine winsnstr(). 37 ** 38 */ 39 40 #include <curses.priv.h> 41 #include <ctype.h> 42 43 MODULE_ID("$Id: lib_insnstr.c,v 1.4 2016/02/20 21:22:46 tom Exp $") 44 45 NCURSES_EXPORT(int) 46 winsnstr(WINDOW *win, const char *s, int n) 47 { 48 int code = ERR; 49 NCURSES_SIZE_T oy; 50 NCURSES_SIZE_T ox; 51 const unsigned char *str = (const unsigned char *) s; 52 const unsigned char *cp; 53 54 T((T_CALLED("winsnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(s, n), n)); 55 56 if (win != 0 && str != 0) { 57 SCREEN *sp = _nc_screen_of(win); 58 #if USE_WIDEC_SUPPORT 59 /* 60 * If the output contains "wide" (multibyte) characters, we will not 61 * really know the width of a character until we get the last byte 62 * of the character. Since the preceding byte(s) may use more columns 63 * on the screen than the final character, it is best to route the 64 * call to the wins_nwstr() function. 65 */ 66 if (sp->_screen_unicode) { 67 size_t nn = (n > 0) ? (size_t) n : strlen(s); 68 wchar_t *buffer = typeMalloc(wchar_t, nn + 1); 69 if (buffer != 0) { 70 mbstate_t state; 71 size_t n3; 72 init_mb(state); 73 n3 = mbstowcs(buffer, s, nn); 74 if (n3 != (size_t) (-1)) { 75 code = wins_nwstr(win, buffer, (int) n3); 76 } 77 free(buffer); 78 } 79 } 80 if (code == ERR) 81 #endif 82 { 83 84 oy = win->_cury; 85 ox = win->_curx; 86 for (cp = str; *cp && (n <= 0 || (cp - str) < n); cp++) { 87 _nc_insert_ch(sp, win, (chtype) UChar(*cp)); 88 } 89 win->_curx = ox; 90 win->_cury = oy; 91 _nc_synchook(win); 92 code = OK; 93 } 94 } 95 returnCode(code); 96 } 97