482 lines
9.5 KiB
C++
482 lines
9.5 KiB
C++
/* smallprint.cc: small print routines for WIN32
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Copyright 1996, 1998, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008
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Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "ntdll.h"
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#include <stdarg.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <wctype.h>
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#include <wchar.h>
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#include <limits.h>
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#define LLMASK (0xffffffffffffffffULL)
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#define LMASK (0xffffffff)
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#define rnarg(dst, base, dosign, len, pad) __rn ((dst), (base), (dosign), va_arg (ap, long), len, pad, LMASK)
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#define rnargLL(dst, base, dosign, len, pad) __rn ((dst), (base), (dosign), va_arg (ap, unsigned long long), len, pad, LLMASK)
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static char __fastcall *
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__rn (char *dst, int base, int dosign, long long val, int len, int pad, unsigned long long mask)
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{
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/* longest number is ULLONG_MAX, 18446744073709551615, 20 digits */
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unsigned long long uval = 0;
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char res[20];
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static const char str[] = "0123456789ABCDEF";
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int l = 0;
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if (dosign && val < 0)
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{
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*dst++ = '-';
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uval = -val;
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}
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else if (dosign > 0 && val > 0)
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{
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*dst++ = '+';
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uval = val;
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}
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else
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uval = val;
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uval &= mask;
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do
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{
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res[l++] = str[uval % base];
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uval /= base;
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}
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while (uval);
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while (len-- > l)
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*dst++ = pad;
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while (l > 0)
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*dst++ = res[--l];
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return dst;
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}
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extern "C" int
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__small_vsprintf (char *dst, const char *fmt, va_list ap)
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{
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char tmp[NT_MAX_PATH];
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char *orig = dst;
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const char *s;
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PWCHAR w;
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UNICODE_STRING uw, *us;
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DWORD err = GetLastError ();
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while (*fmt)
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{
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int i, n = 0x7fff;
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if (*fmt != '%')
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*dst++ = *fmt++;
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else
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{
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int len = 0;
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char pad = ' ';
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int addsign = -1;
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switch (*++fmt)
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{
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case '+':
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addsign = 1;
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fmt++;
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break;
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case '%':
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*dst++ = *fmt++;
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continue;
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}
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for (;;)
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{
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char c = *fmt++;
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switch (c)
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{
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case '0':
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if (len == 0)
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{
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pad = '0';
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continue;
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}
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case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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len = len * 10 + (c - '0');
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continue;
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case 'l':
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continue;
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case 'c':
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{
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int c = va_arg (ap, int);
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if (c > ' ' && c <= 127)
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*dst++ = c;
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else
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{
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*dst++ = '0';
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*dst++ = 'x';
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dst = __rn (dst, 16, 0, c, len, pad, LMASK);
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}
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}
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break;
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case 'C':
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{
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WCHAR wc = (WCHAR) va_arg (ap, int);
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char buf[4], *c;
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sys_wcstombs (buf, 4, &wc, 1);
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for (c = buf; *c; ++c)
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if (isprint (*c))
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*dst++ = *c;
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else
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{
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*dst++ = '0';
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*dst++ = 'x';
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dst = __rn (dst, 16, 0, *c, len, pad, LMASK);
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}
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}
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case 'E':
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strcpy (dst, "Win32 error ");
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dst = __rn (dst + sizeof ("Win32 error"), 10, 0, err, len, pad, LMASK);
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break;
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case 'd':
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dst = rnarg (dst, 10, addsign, len, pad);
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break;
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case 'D':
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dst = rnargLL (dst, 10, addsign, len, pad);
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break;
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case 'u':
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dst = rnarg (dst, 10, 0, len, pad);
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break;
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case 'U':
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dst = rnargLL (dst, 10, 0, len, pad);
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break;
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case 'o':
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dst = rnarg (dst, 8, 0, len, pad);
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break;
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case 'p':
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*dst++ = '0';
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*dst++ = 'x';
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/* fall through */
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case 'x':
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dst = rnarg (dst, 16, 0, len, pad);
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break;
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case 'X':
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dst = rnargLL (dst, 16, 0, len, pad);
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break;
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case 'P':
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if (!GetModuleFileName (NULL, tmp, NT_MAX_PATH))
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s = "cygwin program";
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else
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s = tmp;
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goto fillin;
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case '.':
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n = strtol (fmt, (char **) &fmt, 10);
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if (*fmt++ != 's')
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goto endfor;
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case 's':
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s = va_arg (ap, char *);
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if (s == NULL)
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s = "(null)";
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fillin:
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for (i = 0; *s && i < n; i++)
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*dst++ = *s++;
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break;
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case 'W':
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w = va_arg (ap, PWCHAR);
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RtlInitUnicodeString (&uw, w);
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us = &uw;
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goto wfillin;
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case 'S':
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us = va_arg (ap, PUNICODE_STRING);
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wfillin:
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{
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char *tmpbuf;
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if (!sys_wcstombs_alloc (&tmpbuf, HEAP_NOTHEAP, us->Buffer,
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us->Length / sizeof (WCHAR)))
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{
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s = "invalid UNICODE_STRING";
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goto fillin;
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}
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char *tmp = tmpbuf;
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for (i = 0; *tmp && i < n; i++)
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*dst++ = *tmp++;
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free (tmpbuf);
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}
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break;
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default:
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*dst++ = '?';
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*dst++ = fmt[-1];
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}
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endfor:
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break;
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}
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}
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}
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*dst = 0;
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SetLastError (err);
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return dst - orig;
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}
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extern "C" int
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__small_sprintf (char *dst, const char *fmt, ...)
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{
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int r;
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va_list ap;
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va_start (ap, fmt);
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r = __small_vsprintf (dst, fmt, ap);
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va_end (ap);
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return r;
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}
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extern "C" void
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small_printf (const char *fmt, ...)
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{
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char buf[16384];
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va_list ap;
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DWORD done;
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int count;
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#if 0 /* Turn on to force console errors */
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extern SECURITY_ATTRIBUTES sec_none;
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HANDLE h = CreateFileA ("CONOUT$", GENERIC_READ|GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_WRITE, &sec_none,
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OPEN_EXISTING, 0, 0);
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if (h)
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SetStdHandle (STD_ERROR_HANDLE, h);
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#endif
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va_start (ap, fmt);
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count = __small_vsprintf (buf, fmt, ap);
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va_end (ap);
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WriteFile (GetStdHandle (STD_ERROR_HANDLE), buf, count, &done, NULL);
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FlushFileBuffers (GetStdHandle (STD_ERROR_HANDLE));
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}
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#ifdef DEBUGGING
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static HANDLE NO_COPY console_handle = NULL;
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extern "C" void
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console_printf (const char *fmt, ...)
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{
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char buf[16384];
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va_list ap;
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DWORD done;
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int count;
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if (!console_handle)
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console_handle = CreateFileA ("CON", GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL, OPEN_EXISTING, 0, 0);
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if (console_handle == INVALID_HANDLE_VALUE)
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console_handle = GetStdHandle (STD_ERROR_HANDLE);
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va_start (ap, fmt);
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count = __small_vsprintf (buf, fmt, ap);
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va_end (ap);
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WriteFile (console_handle, buf, count, &done, NULL);
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FlushFileBuffers (console_handle);
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}
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#endif
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#define wrnarg(dst, base, dosign, len, pad) __wrn ((dst), (base), (dosign), va_arg (ap, long), len, pad, LMASK)
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#define wrnargLL(dst, base, dosign, len, pad) __wrn ((dst), (base), (dosign), va_arg (ap, unsigned long long), len, pad, LLMASK)
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static PWCHAR __fastcall
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__wrn (PWCHAR dst, int base, int dosign, long long val, int len, int pad, unsigned long long mask)
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{
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/* longest number is ULLONG_MAX, 18446744073709551615, 20 digits */
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unsigned long long uval = 0;
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WCHAR res[20];
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static const WCHAR str[] = L"0123456789ABCDEF";
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int l = 0;
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if (dosign && val < 0)
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{
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*dst++ = L'-';
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uval = -val;
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}
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else if (dosign > 0 && val > 0)
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{
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*dst++ = L'+';
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uval = val;
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}
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else
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uval = val;
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uval &= mask;
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do
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{
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res[l++] = str[uval % base];
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uval /= base;
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}
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while (uval);
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while (len-- > l)
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*dst++ = pad;
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while (l > 0)
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*dst++ = res[--l];
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return dst;
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}
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extern "C" int
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__small_vswprintf (PWCHAR dst, const WCHAR *fmt, va_list ap)
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{
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WCHAR tmp[NT_MAX_PATH];
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PWCHAR orig = dst;
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const char *s;
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PWCHAR w;
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UNICODE_STRING uw, *us;
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DWORD err = GetLastError ();
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while (*fmt)
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{
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unsigned int n = 0x7fff;
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if (*fmt != L'%')
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*dst++ = *fmt++;
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else
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{
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int len = 0;
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WCHAR pad = L' ';
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int addsign = -1;
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switch (*++fmt)
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{
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case L'+':
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addsign = 1;
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fmt++;
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break;
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case L'%':
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*dst++ = *fmt++;
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continue;
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}
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for (;;)
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{
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char c = *fmt++;
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switch (c)
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{
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case L'0':
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if (len == 0)
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{
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pad = L'0';
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continue;
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}
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case L'1' ... L'9':
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len = len * 10 + (c - L'0');
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continue;
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case L'l':
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continue;
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case L'c':
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case L'C':
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{
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unsigned int c = va_arg (ap, unsigned int);
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if (c > L' ' && c <= 127)
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*dst++ = c;
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else
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{
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*dst++ = L'0';
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*dst++ = L'x';
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dst = __wrn (dst, 16, 0, c, len, pad, LMASK);
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}
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}
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break;
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case L'E':
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wcscpy (dst, L"Win32 error ");
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dst = __wrn (dst + sizeof ("Win32 error"), 10, 0, err, len, pad, LMASK);
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break;
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case L'd':
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dst = wrnarg (dst, 10, addsign, len, pad);
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break;
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case L'D':
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dst = wrnargLL (dst, 10, addsign, len, pad);
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break;
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case L'u':
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dst = wrnarg (dst, 10, 0, len, pad);
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break;
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case L'U':
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dst = wrnargLL (dst, 10, 0, len, pad);
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break;
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case L'o':
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dst = wrnarg (dst, 8, 0, len, pad);
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break;
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case L'p':
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*dst++ = L'0';
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*dst++ = L'x';
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/* fall through */
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case L'x':
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dst = wrnarg (dst, 16, 0, len, pad);
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break;
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case L'X':
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dst = wrnargLL (dst, 16, 0, len, pad);
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break;
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case L'P':
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if (!GetModuleFileNameW (NULL, tmp, NT_MAX_PATH))
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RtlInitUnicodeString (us = &uw, L"cygwin program");
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else
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RtlInitUnicodeString (us = &uw, tmp);
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goto fillin;
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case L'.':
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n = wcstoul (fmt, (wchar_t **) &fmt, 10);
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if (*fmt++ != L's')
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goto endfor;
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case L's':
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s = va_arg (ap, char *);
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if (s == NULL)
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s = "(null)";
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sys_mbstowcs (tmp, NT_MAX_PATH, s, n);
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RtlInitUnicodeString (us = &uw, tmp);
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goto fillin;
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break;
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case L'W':
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w = va_arg (ap, PWCHAR);
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RtlInitUnicodeString (us = &uw, w);
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goto fillin;
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case L'S':
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us = va_arg (ap, PUNICODE_STRING);
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fillin:
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if (us->Length / sizeof (WCHAR) < n)
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n = us->Length / sizeof (WCHAR);
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for (unsigned int i = 0; i < n; i++)
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*dst++ = *w++;
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break;
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default:
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*dst++ = L'?';
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*dst++ = fmt[-1];
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}
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endfor:
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break;
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}
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}
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}
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*dst = L'\0';
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SetLastError (err);
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return dst - orig;
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}
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extern "C" int
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__small_swprintf (PWCHAR dst, const WCHAR *fmt, ...)
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{
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int r;
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va_list ap;
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va_start (ap, fmt);
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r = __small_vswprintf (dst, fmt, ap);
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va_end (ap);
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return r;
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}
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