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693 lines
17 KiB
C
693 lines
17 KiB
C
/*
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* Copyright (c) 1983, 1995, 1996 Eric P. Allman
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef FRONTEND
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#include "postgres.h"
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#else
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#include "postgres_fe.h"
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#endif
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#ifndef WIN32
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#include <sys/ioctl.h>
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#endif
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#include <sys/param.h>
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/*
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** SNPRINTF, VSNPRINT -- counted versions of printf
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**
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** These versions have been grabbed off the net. They have been
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** cleaned up to compile properly and support for .precision and
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** %lx has been added.
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*/
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/**************************************************************
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* Original:
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* Patrick Powell Tue Apr 11 09:48:21 PDT 1995
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* A bombproof version of doprnt (dopr) included.
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* Sigh. This sort of thing is always nasty do deal with. Note that
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* the version here does not include floating point. (now it does ... tgl)
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*
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* snprintf() is used instead of sprintf() as it does limit checks
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* for string length. This covers a nasty loophole.
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*
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* The other functions are there to prevent NULL pointers from
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* causing nasty effects.
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**************************************************************/
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/*static char _id[] = "$PostgreSQL: pgsql/src/port/snprintf.c,v 1.15 2005/03/02 15:32:39 momjian Exp $";*/
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int snprintf(char *str, size_t count, const char *fmt,...);
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int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
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int printf(const char *format, ...);
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static void dopr(char *buffer, const char *format, va_list args, char *end);
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/*
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* If vsnprintf() is not before snprintf() in this file, snprintf()
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* will call the system vsnprintf() on MinGW.
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*/
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int
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vsnprintf(char *str, size_t count, const char *fmt, va_list args)
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{
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char *end;
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str[0] = '\0';
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end = str + count - 1;
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dopr(str, fmt, args, end);
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if (count > 0)
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end[0] = '\0';
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return strlen(str);
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}
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int
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snprintf(char *str, size_t count, const char *fmt,...)
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{
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int len;
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va_list args;
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va_start(args, fmt);
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len = vsnprintf(str, count, fmt, args);
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va_end(args);
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return len;
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}
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int
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printf(const char *fmt,...)
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{
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int len;
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va_list args;
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char* buffer[4096];
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char* p;
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va_start(args, fmt);
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len = vsnprintf((char*)buffer, (size_t)4096, fmt, args);
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va_end(args);
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p = (char*)buffer;
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for(;*p;p++)
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putchar(*p);
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return len;
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}
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/*
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* dopr(): poor man's version of doprintf
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*/
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static void fmtstr(char *value, int ljust, int len, int zpad, int maxwidth,
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char *end, char **output);
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static void fmtnum(int64 value, int base, int dosign, int ljust, int len,
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int zpad, char *end, char **output);
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static void fmtfloat(double value, char type, int ljust, int len,
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int precision, int pointflag, char *end, char **output);
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static void dostr(char *str, int cut, char *end, char **output);
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static void dopr_outch(int c, char *end, char **output);
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#define FMTSTR 1
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#define FMTNUM 2
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#define FMTFLOAT 3
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#define FMTCHAR 4
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static void
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dopr(char *buffer, const char *format, va_list args, char *end)
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{
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int ch;
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int64 value;
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double fvalue;
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int longlongflag = 0;
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int longflag = 0;
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int pointflag = 0;
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int maxwidth = 0;
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char *strvalue;
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int ljust;
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int len;
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int zpad;
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int i;
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const char* format_save;
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const char* fmtbegin;
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int fmtpos = 1;
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int realpos = 0;
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int position;
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char *output;
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int percents = 1;
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const char *p;
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struct fmtpar {
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const char* fmtbegin;
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const char* fmtend;
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void* value;
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int64 numvalue;
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double fvalue;
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int charvalue;
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int ljust;
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int len;
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int zpad;
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int maxwidth;
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int base;
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int dosign;
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char type;
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int precision;
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int pointflag;
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char func;
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int realpos;
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} *fmtpar, **fmtparptr;
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/* Create enough structures to hold all arguments */
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for (p = format; *p != '\0'; p++)
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if (*p == '%') /* counts %% as two, so overcounts */
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percents++;
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#ifndef FRONTEND
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fmtpar = pgport_palloc(sizeof(struct fmtpar) * percents);
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fmtparptr = pgport_palloc(sizeof(struct fmtpar *) * percents);
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#else
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if ((fmtpar = malloc(sizeof(struct fmtpar) * percents)) == NULL)
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{
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fprintf(stderr, _("out of memory\n"));
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exit(1);
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}
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if ((fmtparptr = malloc(sizeof(struct fmtpar *) * percents)) == NULL)
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{
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fprintf(stderr, _("out of memory\n"));
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exit(1);
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}
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#endif
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format_save = format;
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output = buffer;
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while ((ch = *format++))
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{
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switch (ch)
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{
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case '%':
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ljust = len = zpad = maxwidth = 0;
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longflag = longlongflag = pointflag = 0;
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fmtbegin = format - 1;
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realpos = 0;
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position = 0;
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nextch:
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ch = *format++;
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switch (ch)
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{
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case 0:
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goto performpr;
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case '-':
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ljust = 1;
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goto nextch;
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case '0': /* set zero padding if len not set */
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if (len == 0 && !pointflag)
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zpad = '0';
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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if (pointflag)
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maxwidth = maxwidth * 10 + ch - '0';
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else
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{
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len = len * 10 + ch - '0';
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position = position * 10 + ch - '0';
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}
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goto nextch;
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case '$':
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realpos = position;
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len = 0;
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goto nextch;
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case '*':
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if (pointflag)
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maxwidth = va_arg(args, int);
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else
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len = va_arg(args, int);
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goto nextch;
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case '.':
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pointflag = 1;
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goto nextch;
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case 'l':
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if (longflag)
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longlongflag = 1;
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else
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longflag = 1;
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goto nextch;
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/*
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* We might export this to client apps so we should
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* support 'qd' and 'I64d'(MinGW) also in case the
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* native version does.
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*/
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case 'q':
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longlongflag = 1;
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longflag = 1;
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goto nextch;
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case 'I':
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if (*format == '6' && *(format+1) == '4')
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{
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format += 2;
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longlongflag = 1;
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longflag = 1;
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goto nextch;
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}
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break;
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case 'u':
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case 'U':
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/* fmtnum(value,base,dosign,ljust,len,zpad,&output) */
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if (longflag)
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{
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if (longlongflag)
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value = va_arg(args, uint64);
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else
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value = va_arg(args, unsigned long);
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}
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else
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value = va_arg(args, unsigned int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].numvalue = value;
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fmtpar[fmtpos].base = 10;
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fmtpar[fmtpos].dosign = 0;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].func = FMTNUM;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 'o':
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case 'O':
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/* fmtnum(value,base,dosign,ljust,len,zpad,&output) */
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if (longflag)
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{
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if (longlongflag)
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value = va_arg(args, uint64);
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else
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value = va_arg(args, unsigned long);
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}
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else
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value = va_arg(args, unsigned int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].numvalue = value;
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fmtpar[fmtpos].base = 8;
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fmtpar[fmtpos].dosign = 0;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].func = FMTNUM;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 'd':
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case 'D':
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if (longflag)
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{
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if (longlongflag)
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{
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value = va_arg(args, int64);
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}
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else
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value = va_arg(args, long);
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}
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else
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value = va_arg(args, int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].numvalue = value;
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fmtpar[fmtpos].base = 10;
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fmtpar[fmtpos].dosign = 1;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].func = FMTNUM;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 'x':
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if (longflag)
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{
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if (longlongflag)
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value = va_arg(args, uint64);
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else
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value = va_arg(args, unsigned long);
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}
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else
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value = va_arg(args, unsigned int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].numvalue = value;
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fmtpar[fmtpos].base = 16;
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fmtpar[fmtpos].dosign = 0;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].func = FMTNUM;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 'X':
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if (longflag)
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{
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if (longlongflag)
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value = va_arg(args, uint64);
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else
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value = va_arg(args, unsigned long);
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}
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else
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value = va_arg(args, unsigned int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].numvalue = value;
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fmtpar[fmtpos].base = -16;
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fmtpar[fmtpos].dosign = 1;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].func = FMTNUM;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 's':
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strvalue = va_arg(args, char *);
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if (maxwidth > 0 || !pointflag)
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{
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if (pointflag && len > maxwidth)
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len = maxwidth; /* Adjust padding */
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].value = strvalue;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].zpad = zpad;
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fmtpar[fmtpos].maxwidth = maxwidth;
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fmtpar[fmtpos].func = FMTSTR;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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}
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break;
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case 'c':
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ch = va_arg(args, int);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].charvalue = ch;
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fmtpar[fmtpos].func = FMTCHAR;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G':
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fvalue = va_arg(args, double);
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fmtpar[fmtpos].fmtbegin = fmtbegin;
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fmtpar[fmtpos].fmtend = format;
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fmtpar[fmtpos].fvalue = fvalue;
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fmtpar[fmtpos].type = ch;
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fmtpar[fmtpos].ljust = ljust;
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fmtpar[fmtpos].len = len;
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fmtpar[fmtpos].maxwidth = maxwidth;
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fmtpar[fmtpos].pointflag = pointflag;
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fmtpar[fmtpos].func = FMTFLOAT;
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fmtpar[fmtpos].realpos = realpos?realpos:fmtpos;
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fmtpos++;
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break;
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case '%':
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break;
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default:
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dostr("???????", 0, end, &output);
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}
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break;
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default:
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dopr_outch(ch, end, &output);
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break;
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}
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}
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performpr:
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/* shuffle pointers */
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for(i = 1; i < fmtpos; i++)
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fmtparptr[i] = &fmtpar[fmtpar[i].realpos];
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output = buffer;
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format = format_save;
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while ((ch = *format++))
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{
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for(i = 1; i < fmtpos; i++)
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{
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if(ch == '%' && *format == '%')
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{
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format++;
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continue;
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}
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if(fmtpar[i].fmtbegin == format - 1)
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{
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switch(fmtparptr[i]->func){
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case FMTSTR:
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fmtstr(fmtparptr[i]->value, fmtparptr[i]->ljust,
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fmtparptr[i]->len, fmtparptr[i]->zpad,
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fmtparptr[i]->maxwidth, end, &output);
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break;
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case FMTNUM:
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fmtnum(fmtparptr[i]->numvalue, fmtparptr[i]->base,
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fmtparptr[i]->dosign, fmtparptr[i]->ljust,
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fmtparptr[i]->len, fmtparptr[i]->zpad, end, &output);
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break;
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case FMTFLOAT:
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fmtfloat(fmtparptr[i]->fvalue, fmtparptr[i]->type,
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fmtparptr[i]->ljust, fmtparptr[i]->len,
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fmtparptr[i]->precision, fmtparptr[i]->pointflag,
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end, &output);
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break;
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case FMTCHAR:
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dopr_outch(fmtparptr[i]->charvalue, end, &output);
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break;
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}
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format = fmtpar[i].fmtend;
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goto nochar;
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}
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}
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dopr_outch(ch, end, &output);
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nochar:
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/* nothing */
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; /* semicolon required because a goto has to be attached to a statement */
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}
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*output = '\0';
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#ifndef FRONTEND
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pgport_pfree(fmtpar);
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pgport_pfree(fmtparptr);
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#else
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free(fmtpar);
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free(fmtparptr);
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#endif
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}
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static void
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fmtstr(char *value, int ljust, int len, int zpad, int maxwidth, char *end,
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char **output)
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{
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int padlen,
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strlen; /* amount to pad */
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if (value == 0)
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value = "<NULL>";
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for (strlen = 0; value[strlen]; ++strlen); /* strlen */
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if (strlen > maxwidth && maxwidth)
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strlen = maxwidth;
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padlen = len - strlen;
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if (padlen < 0)
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padlen = 0;
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if (ljust)
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padlen = -padlen;
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while (padlen > 0)
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{
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dopr_outch(' ', end, output);
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--padlen;
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}
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|
dostr(value, maxwidth, end, output);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ', end, output);
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fmtnum(int64 value, int base, int dosign, int ljust, int len, int zpad,
|
|
char *end, char **output)
|
|
{
|
|
int signvalue = 0;
|
|
uint64 uvalue;
|
|
char convert[64];
|
|
int place = 0;
|
|
int padlen = 0; /* amount to pad */
|
|
int caps = 0;
|
|
|
|
/*
|
|
* DEBUGP(("value 0x%x, base %d, dosign %d, ljust %d, len %d, zpad
|
|
* %d\n", value, base, dosign, ljust, len, zpad ));
|
|
*/
|
|
uvalue = value;
|
|
if (dosign)
|
|
{
|
|
if (value < 0)
|
|
{
|
|
signvalue = '-';
|
|
uvalue = -value;
|
|
}
|
|
}
|
|
if (base < 0)
|
|
{
|
|
caps = 1;
|
|
base = -base;
|
|
}
|
|
do
|
|
{
|
|
convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")
|
|
[uvalue % (unsigned) base];
|
|
uvalue = (uvalue / (unsigned) base);
|
|
} while (uvalue);
|
|
convert[place] = 0;
|
|
|
|
if (len < 0)
|
|
{
|
|
/* this could happen with a "*" width spec */
|
|
ljust = 1;
|
|
len = -len;
|
|
}
|
|
padlen = len - place;
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
|
|
/*
|
|
* DEBUGP(( "str '%s', place %d, sign %c, padlen %d\n",
|
|
* convert,place,signvalue,padlen));
|
|
*/
|
|
if (zpad && padlen > 0)
|
|
{
|
|
if (signvalue)
|
|
{
|
|
dopr_outch(signvalue, end, output);
|
|
--padlen;
|
|
signvalue = 0;
|
|
}
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(zpad, end, output);
|
|
--padlen;
|
|
}
|
|
}
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ', end, output);
|
|
--padlen;
|
|
}
|
|
if (signvalue)
|
|
dopr_outch(signvalue, end, output);
|
|
while (place > 0)
|
|
dopr_outch(convert[--place], end, output);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ', end, output);
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fmtfloat(double value, char type, int ljust, int len, int precision,
|
|
int pointflag, char *end, char **output)
|
|
{
|
|
char fmt[32];
|
|
char convert[512];
|
|
int padlen = 0; /* amount to pad */
|
|
|
|
/* we rely on regular C library's sprintf to do the basic conversion */
|
|
if (pointflag)
|
|
sprintf(fmt, "%%.%d%c", precision, type);
|
|
else
|
|
sprintf(fmt, "%%%c", type);
|
|
sprintf(convert, fmt, value);
|
|
|
|
if (len < 0)
|
|
{
|
|
/* this could happen with a "*" width spec */
|
|
ljust = 1;
|
|
len = -len;
|
|
}
|
|
padlen = len - strlen(convert);
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ', end, output);
|
|
--padlen;
|
|
}
|
|
dostr(convert, 0, end, output);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ', end, output);
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dostr(char *str, int cut, char *end, char **output)
|
|
{
|
|
if (cut)
|
|
{
|
|
while (*str && cut-- > 0)
|
|
dopr_outch(*str++, end, output);
|
|
}
|
|
else
|
|
{
|
|
while (*str)
|
|
dopr_outch(*str++, end, output);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dopr_outch(int c, char *end, char **output)
|
|
{
|
|
#ifdef NOT_USED
|
|
if (iscntrl((unsigned char) c) && c != '\n' && c != '\t')
|
|
{
|
|
c = '@' + (c & 0x1F);
|
|
if (end == 0 || *output < end)
|
|
*(*output)++ = '^';
|
|
}
|
|
#endif
|
|
if (end == 0 || *output < end)
|
|
*(*output)++ = c;
|
|
}
|