diff options
Diffstat (limited to 'ncurses-5.3/ncurses/base/vsscanf.c')
| -rw-r--r-- | ncurses-5.3/ncurses/base/vsscanf.c | 356 |
1 files changed, 0 insertions, 356 deletions
diff --git a/ncurses-5.3/ncurses/base/vsscanf.c b/ncurses-5.3/ncurses/base/vsscanf.c deleted file mode 100644 index 29c46b6..0000000 --- a/ncurses-5.3/ncurses/base/vsscanf.c +++ /dev/null @@ -1,356 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998-2001,2002 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 * - * "Software"), to deal in the Software without restriction, including * - * without limitation the rights to use, copy, modify, merge, publish, * - * distribute, distribute with modifications, sublicense, and/or sell * - * copies of the Software, and to permit persons to whom the Software is * - * furnished to do so, subject to the following conditions: * - * * - * The above copyright notice and this permission notice shall be included * - * in all copies or substantial portions of the Software. * - * * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * - * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * - * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * - * * - * Except as contained in this notice, the name(s) of the above copyright * - * holders shall not be used in advertising or otherwise to promote the * - * sale, use or other dealings in this Software without prior written * - * authorization. * - ****************************************************************************/ - -/**************************************************************************** - * State-machine fallback written by Thomas E. Dickey 2002 * - ****************************************************************************/ - -/* - * This function is needed to support vwscanw - */ - -#include <curses.priv.h> - -#if !HAVE_VSSCANF - -MODULE_ID("$Id$") - -#if !(HAVE_VFSCANF || HAVE__DOSCAN) - -#include <ctype.h> - -#define L_SQUARE '[' -#define R_SQUARE ']' - -typedef enum { - cUnknown - ,cError /* anything that isn't ANSI */ - ,cAssigned - ,cChar - ,cInt - ,cFloat - ,cDouble - ,cPointer - ,cLong - ,cShort - ,cRange - ,cString -} ChunkType; - -typedef enum { - oUnknown - ,oShort - ,oLong -} OtherType; - -typedef enum { - sUnknown - ,sPercent /* last was '%' beginning a format */ - ,sNormal /* ...somewhere in the middle */ - ,sLeft /* last was left square bracket beginning a range */ - ,sRange /* ...somewhere in the middle */ - ,sFinal /* last finished a format */ -} ScanState; - -static ChunkType -final_ch(int ch, OtherType other) -{ - ChunkType result = cUnknown; - - switch (ch) { - case 'c': - if (other == oUnknown) - result = cChar; - else - result = cError; - break; - case 'd': - case 'i': - case 'X': - case 'x': - switch (other) { - case oUnknown: - result = cInt; - break; - case oShort: - result = cShort; - break; - case oLong: - result = cLong; - break; - } - break; - case 'E': - case 'e': - case 'f': - case 'g': - switch (other) { - case oUnknown: - result = cFloat; - break; - case oShort: - result = cError; - break; - case oLong: - result = cDouble; - break; - } - break; - case 'n': - if (other == oUnknown) - result = cAssigned; - else - result = cError; - break; - case 'p': - if (other == oUnknown) - result = cPointer; - else - result = cError; - break; - case 's': - if (other == oUnknown) - result = cString; - else - result = cError; - break; - } - return result; -} - -static OtherType -other_ch(int ch) -{ - OtherType result = oUnknown; - switch (ch) { - case 'h': - result = oShort; - break; - case 'l': - result = oLong; - break; - } - return result; -} -#endif - -/*VARARGS2*/ -NCURSES_EXPORT(int) -vsscanf(const char *str, const char *format, va_list ap) -{ -#if HAVE_VFSCANF || HAVE__DOSCAN - /* - * This code should work on anything descended from AT&T SVr1. - */ - FILE strbuf; - - strbuf._flag = _IOREAD; - strbuf._ptr = strbuf._base = (unsigned char *) str; - strbuf._cnt = strlen(str); - strbuf._file = _NFILE; - -#if HAVE_VFSCANF - return (vfscanf(&strbuf, format, ap)); -#else - return (_doscan(&strbuf, format, ap)); -#endif -#else - static int can_convert = -1; - - int assigned = 0; - int consumed = 0; - - T((T_CALLED("vsscanf(%s,%s,...)"), - _nc_visbuf2(1, str), - _nc_visbuf2(2, format))); - - /* - * This relies on having a working "%n" format conversion. Check if it - * works. Only very old C libraries do not support it. - * - * FIXME: move this check into the configure script. - */ - if (can_convert < 0) { - int check1; - int check2; - if (sscanf("123", "%d%n", &check1, &check2) > 0 - && check1 == 123 - && check2 == 3) { - can_convert = 1; - } else { - can_convert = 0; - } - } - - if (can_convert) { - size_t len_fmt = strlen(format) + 32; - char *my_fmt = malloc(len_fmt); - ChunkType chunk, ctest; - OtherType other, otest; - ScanState state; - unsigned n; - int eaten; - void *pointer; - - if (my_fmt != 0) { - /* - * Split the original format into chunks, adding a "%n" to the end - * of each (except of course if it used %n), and use that - * information to decide where to start scanning the next chunk. - * - * FIXME: does %n count bytes or characters? If the latter, this - * will require further work for multibyte strings. - */ - while (*format != '\0') { - /* find a chunk */ - state = sUnknown; - chunk = cUnknown; - other = cUnknown; - pointer = 0; - for (n = 0; format[n] != 0 && state != sFinal; ++n) { - my_fmt[n] = format[n]; - switch (state) { - case sUnknown: - if (format[n] == '%') - state = sPercent; - break; - case sPercent: - if (format[n] == '%') { - state = sUnknown; - } else if (format[n] == L_SQUARE) { - state = sLeft; - } else { - state = sNormal; - --n; - } - break; - case sLeft: - state = sRange; - if (format[n] == '^') { - ++n; - my_fmt[n] = format[n]; - } - break; - case sRange: - if (format[n] == R_SQUARE) { - state = sFinal; - chunk = cRange; - } - break; - case sNormal: - if (format[n] == '*') { - state = sUnknown; - } else { - if ((ctest = final_ch(format[n], other)) != cUnknown) { - state = sFinal; - chunk = ctest; - } else if ((otest = other_ch(format[n])) != oUnknown) { - other = otest; - } else if (isalpha(format[n])) { - state = sFinal; - chunk = cError; - } - } - break; - case sFinal: - break; - } - } - my_fmt[n] = '\0'; - format += n; - - if (chunk == cUnknown - || chunk == cError) { - if (assigned == 0) - assigned = EOF; - break; - } - - /* add %n, if the format was not that */ - if (chunk != cAssigned) { - strcat(my_fmt, "%n"); - } - - switch (chunk) { - case cAssigned: - strcat(my_fmt, "%n"); - pointer = &eaten; - break; - case cInt: - pointer = va_arg(ap, int *); - break; - case cShort: - pointer = va_arg(ap, short *); - break; - case cFloat: - pointer = va_arg(ap, float *); - break; - case cDouble: - pointer = va_arg(ap, double *); - break; - case cLong: - pointer = va_arg(ap, long *); - break; - case cPointer: - pointer = va_arg(ap, void *); - break; - case cChar: - case cRange: - case cString: - pointer = va_arg(ap, char *); - break; - case cError: - case cUnknown: - break; - } - /* do the conversion */ - T(("...converting chunk #%d type %d(%s,%s)", - assigned + 1, chunk, - _nc_visbuf2(1, str + consumed), - _nc_visbuf2(2, my_fmt))); - if (sscanf(str + consumed, my_fmt, pointer, &eaten) > 0) - consumed += eaten; - else - break; - ++assigned; - } - free(my_fmt); - } - } - returnCode(assigned); -#endif -} -#else -extern -NCURSES_EXPORT(void) -_nc_vsscanf(void); /* quiet's gcc warning */ -NCURSES_EXPORT(void) -_nc_vsscanf(void) -{ -} /* nonempty for strict ANSI compilers */ -#endif /* !HAVE_VSSCANF */ |