mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
807 lines
23 KiB
807 lines
23 KiB
/***
|
|
*output.c - printf style output to a struct w4io
|
|
*
|
|
* Copyright (c) 1989-1991, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* This file contains the code that does all the work for the
|
|
* printf family of functions. It should not be called directly, only
|
|
* by the *printf functions. We don't make any assumtions about the
|
|
* sizes of ints, longs, shorts, or long doubles, but if types do overlap, we
|
|
* also try to be efficient. We do assume that pointers are the same size
|
|
* as either ints or longs.
|
|
*
|
|
*Revision History:
|
|
* 06-01-89 PHG Module created
|
|
* 08-28-89 JCR Added cast to get rid of warning (no object changes)
|
|
* 02-15-90 GJF Fixed copyright
|
|
* 10-03-90 WHB Defined LOCAL(x) to "static x" for local procedures
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#if DBG == 1
|
|
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include "w4io.h"
|
|
|
|
|
|
/* this macro defines a function which is private and as fast as possible: */
|
|
/* for example, in C 6.0, it might be static _fastcall <type>. */
|
|
#define LOCAL(x) static x // 100390--WHB
|
|
|
|
#define NOFLOATS // Win 4 doesn't need floating point
|
|
|
|
/* int/long/short/pointer sizes */
|
|
|
|
/* the following should be set depending on the sizes of various types */
|
|
// FLAT or LARGE model is assumed
|
|
#ifdef FLAT
|
|
# define LONG_IS_INT 1 /* 1 means long is same size as int */
|
|
# define SHORT_IS_INT 0 /* 1 means short is same size as int */
|
|
# define PTR_IS_INT 1 /* 1 means ptr is same size as int */
|
|
# define PTR_IS_LONG 0 /* 1 means ptr is same size as long */
|
|
#else // LARGE model
|
|
# define LONG_IS_INT 0 /* 1 means long is same size as int */
|
|
# define SHORT_IS_INT 1 /* 1 means short is same size as int */
|
|
# define PTR_IS_INT 0 /* 1 means ptr is same size as int */
|
|
# define PTR_IS_LONG 1 /* 1 means ptr is same size as long */
|
|
#endif
|
|
#define LONGDOUBLE_IS_DOUBLE 0 /* 1 means long double is same as double */
|
|
|
|
#if LONG_IS_INT
|
|
#define get_long_arg(x) (long)get_int_arg(x)
|
|
#endif
|
|
|
|
#if PTR_IS_INT
|
|
#define get_ptr_arg(x) (void FAR *)get_int_arg(x)
|
|
#elif PTR_IS_LONG
|
|
#define get_ptr_arg(x) (void FAR *)get_long_arg(x)
|
|
#else
|
|
#error Size of pointer must be same as size of int or long
|
|
#endif
|
|
|
|
#ifndef NOFLOATS
|
|
/* These are "fake" double and long doubles to fool the compiler,
|
|
so we don't drag in floating point. */
|
|
typedef struct {
|
|
char x[sizeof(double)];
|
|
} DOUBLE;
|
|
typedef struct {
|
|
char x[sizeof(long double)];
|
|
} LONGDOUBLE;
|
|
#endif
|
|
|
|
|
|
/* CONSTANTS */
|
|
|
|
//#define BUFFERSIZE CVTBUFSIZE /* buffer size for maximum double conv */
|
|
#define BUFFERSIZE 20
|
|
|
|
/* flag definitions */
|
|
#define FL_SIGN 0x0001 /* put plus or minus in front */
|
|
#define FL_SIGNSP 0x0002 /* put space or minus in front */
|
|
#define FL_LEFT 0x0004 /* left justify */
|
|
#define FL_LEADZERO 0x0008 /* pad with leading zeros */
|
|
#define FL_LONG 0x0010 /* long value given */
|
|
#define FL_SHORT 0x0020 /* short value given */
|
|
#define FL_SIGNED 0x0040 /* signed data given */
|
|
#define FL_ALTERNATE 0x0080 /* alternate form requested */
|
|
#define FL_NEGATIVE 0x0100 /* value is negative */
|
|
#define FL_FORCEOCTAL 0x0200 /* force leading '0' for octals */
|
|
#define FL_LONGDOUBLE 0x0400 /* long double value given */
|
|
#define FL_WIDE 0x0800 /* wide character/string given */
|
|
|
|
/* state definitions */
|
|
enum STATE {
|
|
ST_NORMAL, /* normal state; outputting literal chars */
|
|
ST_PERCENT, /* just read '%' */
|
|
ST_FLAG, /* just read flag character */
|
|
ST_WIDTH, /* just read width specifier */
|
|
ST_DOT, /* just read '.' */
|
|
ST_PRECIS, /* just read precision specifier */
|
|
ST_SIZE, /* just read size specifier */
|
|
ST_TYPE /* just read type specifier */
|
|
};
|
|
#define NUMSTATES (ST_TYPE + 1)
|
|
|
|
/* character type values */
|
|
enum CHARTYPE {
|
|
CH_OTHER, /* character with no special meaning */
|
|
CH_PERCENT, /* '%' */
|
|
CH_DOT, /* '.' */
|
|
CH_STAR, /* '*' */
|
|
CH_ZERO, /* '0' */
|
|
CH_DIGIT, /* '1'..'9' */
|
|
CH_FLAG, /* ' ', '+', '-', '#' */
|
|
CH_SIZE, /* 'h', 'l', 'L', 'N', 'F' */
|
|
CH_TYPE /* type specifying character */
|
|
};
|
|
|
|
/* static data (read only, since we are re-entrant) */
|
|
char *nullstring = "(null)"; /* string to print on null ptr */
|
|
|
|
/* The state table. This table is actually two tables combined into one. */
|
|
/* The lower nybble of each byte gives the character class of any */
|
|
/* character; while the uper nybble of the byte gives the next state */
|
|
/* to enter. See the macros below the table for details. */
|
|
/* */
|
|
/* The table is generated by maketab.c -- use the maketab program to make */
|
|
/* changes. */
|
|
|
|
static char lookuptable[] = {
|
|
0x06, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00,
|
|
0x10, 0x00, 0x03, 0x06, 0x00, 0x06, 0x02, 0x10,
|
|
0x04, 0x45, 0x45, 0x45, 0x05, 0x05, 0x05, 0x05,
|
|
0x05, 0x35, 0x30, 0x00, 0x50, 0x00, 0x00, 0x00,
|
|
0x00, 0x20, 0x28, 0x38, 0x50, 0x58, 0x07, 0x08,
|
|
0x00, 0x30, 0x30, 0x30, 0x57, 0x50, 0x07, 0x00,
|
|
0x00, 0x20, 0x20, 0x08, 0x00, 0x00, 0x00, 0x00,
|
|
0x08, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x00,
|
|
0x00, 0x70, 0x70, 0x78, 0x78, 0x78, 0x78, 0x08,
|
|
0x07, 0x08, 0x00, 0x00, 0x07, 0x00, 0x08, 0x08,
|
|
0x08, 0x00, 0x00, 0x08, 0x00, 0x08, 0x00, 0x07,
|
|
0x08
|
|
};
|
|
|
|
#define find_char_class(c) \
|
|
((c) < ' ' || (c) > 'x' ? \
|
|
CH_OTHER \
|
|
: \
|
|
lookuptable[(c)-' '] & 0xF)
|
|
|
|
#define find_next_state(class, state) \
|
|
(lookuptable[(class) * NUMSTATES + (state)] >> 4)
|
|
|
|
#if !LONG_IS_INT
|
|
LOCAL(long) get_long_arg(va_list FAR *pargptr);
|
|
#endif
|
|
LOCAL(int) get_int_arg(va_list FAR *pargptr);
|
|
LOCAL(void) writestring(char FAR *string,
|
|
int len,
|
|
struct w4io FAR *f,
|
|
int FAR *pcchwritten,
|
|
int fwide);
|
|
|
|
#ifndef NOFLOATS
|
|
/* extern float convert routines */
|
|
typedef int (FAR * PFI)();
|
|
extern PFI _cfltcvt_tab[5];
|
|
#define _cfltcvt(a,b,c,d,e) (*_cfltcvt_tab[0])(a,b,c,d,e)
|
|
#define _cropzeros(a) (*_cfltcvt_tab[1])(a)
|
|
#define _fassign(a,b,c) (*_cfltcvt_tab[2])(a,b,c)
|
|
#define _forcdecpt(a) (*_cfltcvt_tab[3])(a)
|
|
#define _positive(a) (*_cfltcvt_tab[4])(a)
|
|
#define _cldcvt(a,b,c,d,e) (*_cfltcvt_tab[5])(a,b,c,d,e)
|
|
#endif
|
|
|
|
|
|
/***
|
|
*int w4iooutput(f, format, argptr)
|
|
*
|
|
*Purpose:
|
|
* Output performs printf style output onto a stream. It is called by
|
|
* printf/fprintf/sprintf/vprintf/vfprintf/vsprintf to so the dirty
|
|
* work. In multi-thread situations, w4iooutput assumes that the given
|
|
* stream is already locked.
|
|
*
|
|
* Algorithm:
|
|
* The format string is parsed by using a finite state automaton
|
|
* based on the current state and the current character read from
|
|
* the format string. Thus, looping is on a per-character basis,
|
|
* not a per conversion specifier basis. Once the format specififying
|
|
* character is read, output is performed.
|
|
*
|
|
*Entry:
|
|
* struct w4io *f - stream for output
|
|
* char *format - printf style format string
|
|
* va_list argptr - pointer to list of subsidiary arguments
|
|
*
|
|
*Exit:
|
|
* Returns the number of characters written, or -1 if an output error
|
|
* occurs.
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
int _cdecl w4iooutput(struct w4io FAR *f, const char FAR *format, va_list argptr)
|
|
{
|
|
int hexadd; /* offset to add to number to get 'a'..'f' */
|
|
char ch; /* character just read */
|
|
wchar_t wc; /* wide character temp */
|
|
wchar_t FAR *pwc; /* wide character temp pointer */
|
|
int flags; /* flag word -- see #defines above for flag values */
|
|
enum STATE state; /* current state */
|
|
enum CHARTYPE chclass; /* class of current character */
|
|
int radix; /* current conversion radix */
|
|
int charsout; /* characters currently written so far, -1 = IO error */
|
|
int fldwidth; /* selected field with -- 0 means default */
|
|
int fwide;
|
|
int precision; /* selected precision -- -1 means default */
|
|
char prefix[2]; /* numeric prefix -- up to two characters */
|
|
int prefixlen; /* length of prefix -- 0 means no prefix */
|
|
int capexp; /* non-zero = 'E' exponent signifiet, zero = 'e' */
|
|
int no_output; /* non-zero = prodcue no output for this specifier */
|
|
char FAR *text; /* pointer text to be printed, not zero terminated */
|
|
char FAR *text2; /* pointer text to be printed, not zero terminated */
|
|
int textlen; /* length of the text to be printed */
|
|
char buffer[BUFFERSIZE]; /* buffer for conversions */
|
|
|
|
charsout = 0; /* no characters written yet */
|
|
state = ST_NORMAL; /* starting state */
|
|
|
|
/* main loop -- loop while format character exist and no I/O errors */
|
|
while ((ch = *format++) != '\0' && charsout >= 0) {
|
|
chclass = find_char_class(ch); /* find character class */
|
|
state = find_next_state(chclass, state); /* find next state */
|
|
|
|
/* execute code for each state */
|
|
switch (state) {
|
|
|
|
case ST_NORMAL:
|
|
/* normal state -- just write character */
|
|
f->writechar(ch, 1, f, &charsout);
|
|
break;
|
|
|
|
case ST_PERCENT:
|
|
/* set default value of conversion parameters */
|
|
prefixlen = fldwidth = no_output = capexp = 0;
|
|
flags = 0;
|
|
precision = -1;
|
|
fwide = 0;
|
|
break;
|
|
|
|
case ST_FLAG:
|
|
/* set flag based on which flag character */
|
|
switch (ch) {
|
|
case '-':
|
|
flags |= FL_LEFT; /* '-' => left justify */
|
|
break;
|
|
case '+':
|
|
flags |= FL_SIGN; /* '+' => force sign indicator */
|
|
break;
|
|
case ' ':
|
|
flags |= FL_SIGNSP; /* ' ' => force sign or space */
|
|
break;
|
|
case '#':
|
|
flags |= FL_ALTERNATE; /* '#' => alternate form */
|
|
break;
|
|
case '0':
|
|
flags |= FL_LEADZERO; /* '0' => pad with leading zeros */
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ST_WIDTH:
|
|
/* update width value */
|
|
if (ch == '*') {
|
|
/* get width from arg list */
|
|
fldwidth = get_int_arg(&argptr);
|
|
if (fldwidth < 0) {
|
|
/* ANSI says neg fld width means '-' flag and pos width */
|
|
flags |= FL_LEFT;
|
|
fldwidth = -fldwidth;
|
|
}
|
|
}
|
|
else {
|
|
/* add digit to current field width */
|
|
fldwidth = fldwidth * 10 + (ch - '0');
|
|
}
|
|
break;
|
|
|
|
case ST_DOT:
|
|
/* zero the precision, since dot with no number means 0
|
|
not default, according to ANSI */
|
|
precision = 0;
|
|
break;
|
|
|
|
case ST_PRECIS:
|
|
/* update precison value */
|
|
if (ch == '*') {
|
|
/* get precision from arg list */
|
|
precision = get_int_arg(&argptr);
|
|
if (precision < 0)
|
|
precision = -1; /* neg precision means default */
|
|
}
|
|
else {
|
|
/* add digit to current precision */
|
|
precision = precision * 10 + (ch - '0');
|
|
}
|
|
break;
|
|
|
|
case ST_SIZE:
|
|
/* just read a size specifier, set the flags based on it */
|
|
switch (ch) {
|
|
#if !LONG_IS_INT
|
|
case 'l':
|
|
flags |= FL_LONG; /* 'l' => long int */
|
|
break;
|
|
#endif
|
|
|
|
#if !LONGDOUBLE_IS_DOUBLE
|
|
case 'L':
|
|
flags |= FL_LONGDOUBLE; /* 'L' => long double */
|
|
break;
|
|
#endif
|
|
|
|
#if !SHORT_IS_INT
|
|
case 'h':
|
|
flags |= FL_SHORT; /* 'h' => short int */
|
|
break;
|
|
#endif
|
|
case 'w':
|
|
flags |= FL_WIDE; /* 'w' => wide character */
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case ST_TYPE:
|
|
/* we have finally read the actual type character, so we */
|
|
/* now format and "print" the output. We use a big switch */
|
|
/* statement that sets 'text' to point to the text that should */
|
|
/* be printed, and 'textlen' to the length of this text. */
|
|
/* Common code later on takes care of justifying it and */
|
|
/* other miscellaneous chores. Note that cases share code, */
|
|
/* in particular, all integer formatting is doen in one place. */
|
|
/* Look at those funky goto statements! */
|
|
|
|
switch (ch) {
|
|
|
|
case 'c': {
|
|
/* print a single character specified by int argument */
|
|
wc = (wchar_t) get_int_arg(&argptr); /* get char to print */
|
|
* (wchar_t FAR *) buffer = wc;
|
|
text = buffer;
|
|
textlen = 1; /* print just a single character */
|
|
}
|
|
break;
|
|
|
|
case 'S': {
|
|
/* print a Counted String
|
|
|
|
int i;
|
|
char FAR *p; /* temps */
|
|
struct string {
|
|
short Length;
|
|
short MaximumLength;
|
|
char FAR *Buffer;
|
|
} *pstr;
|
|
|
|
pstr = get_ptr_arg(&argptr);
|
|
if (pstr == NULL || pstr->Buffer == NULL) {
|
|
/* null ptr passed, use special string */
|
|
text = nullstring;
|
|
#ifdef FLAT
|
|
textlen = strlen(text);
|
|
#else
|
|
textlen = _fstrlen(text);
|
|
#endif
|
|
flags &= ~FL_WIDE;
|
|
} else {
|
|
text = pstr->Buffer;
|
|
textlen = pstr->Length;
|
|
}
|
|
|
|
}
|
|
break;
|
|
|
|
case 's': {
|
|
/* print a string -- */
|
|
/* ANSI rules on how much of string to print: */
|
|
/* all if precision is default, */
|
|
/* min(precision, length) if precision given. */
|
|
/* prints '(null)' if a null string is passed */
|
|
|
|
int i;
|
|
char FAR *p; /* temps */
|
|
|
|
text = get_ptr_arg(&argptr);
|
|
if (text == NULL) {
|
|
/* null ptr passed, use special string */
|
|
text = nullstring;
|
|
flags &= ~FL_WIDE;
|
|
}
|
|
|
|
/* At this point it is tempting to use strlen(), but */
|
|
/* if a precision is specified, we're not allowed to */
|
|
/* scan past there, because there might be no null */
|
|
/* at all. Thus, we must do our own scan. */
|
|
|
|
i = (precision == -1) ? INT_MAX : precision;
|
|
|
|
/* scan for null upto i characters */
|
|
if (flags & FL_WIDE) {
|
|
pwc = (wchar_t FAR *) text;
|
|
while (i-- && (wc = *pwc) && (wc & 0x00ff)) {
|
|
++pwc;
|
|
if (wc & 0xff00) { // if high byte set,
|
|
break; // error will be indicated
|
|
}
|
|
}
|
|
textlen = (int) (pwc - (wchar_t FAR *) text) ; /* length of string */
|
|
} else {
|
|
p = text;
|
|
while (i-- && *p) {
|
|
++p;
|
|
}
|
|
textlen = (int) (p - text); /* length of the string */
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'n': {
|
|
/* write count of characters seen so far into */
|
|
/* short/int/long thru ptr read from args */
|
|
|
|
void FAR *p; /* temp */
|
|
|
|
p = get_ptr_arg(&argptr);
|
|
|
|
/* store chars out into short/long/int depending on flags */
|
|
#if !LONG_IS_INT
|
|
if (flags & FL_LONG)
|
|
*(long FAR *)p = charsout;
|
|
else
|
|
#endif
|
|
|
|
#if !SHORT_IS_INT
|
|
if (flags & FL_SHORT)
|
|
*(short FAR *)p = (short) charsout;
|
|
else
|
|
#endif
|
|
*(int FAR *)p = charsout;
|
|
|
|
no_output = 1; /* force no output */
|
|
}
|
|
break;
|
|
|
|
|
|
#ifndef NOFLOATS
|
|
case 'E':
|
|
case 'G':
|
|
capexp = 1; /* capitalize exponent */
|
|
ch += 'a' - 'A'; /* convert format char to lower */
|
|
/* DROP THROUGH */
|
|
case 'e':
|
|
case 'f':
|
|
case 'g': {
|
|
/* floating point conversion -- we call cfltcvt routines */
|
|
/* to do the work for us. */
|
|
flags |= FL_SIGNED; /* floating point is signed conversion */
|
|
text = buffer; /* put result in buffer */
|
|
flags &= ~FL_WIDE; /* 8 bit string */
|
|
|
|
/* compute the precision value */
|
|
if (precision < 0)
|
|
precision = 6; /* default precision: 6 */
|
|
else if (precision == 0 && ch == 'g')
|
|
precision = 1; /* ANSI specified */
|
|
|
|
#if !LONGDOUBLE_IS_DOUBLE
|
|
/* do the conversion */
|
|
if (flags & FL_LONGDOUBLE) {
|
|
_cldcvt(argptr, text, ch, precision, capexp);
|
|
va_arg(argptr, LONGDOUBLE);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
_cfltcvt(argptr, text, ch, precision, capexp);
|
|
va_arg(argptr, DOUBLE);
|
|
}
|
|
|
|
/* '#' and precision == 0 means force a decimal point */
|
|
if ((flags & FL_ALTERNATE) && precision == 0)
|
|
_forcdecpt(text);
|
|
|
|
/* 'g' format means crop zero unless '#' given */
|
|
if (ch == 'g' && !(flags & FL_ALTERNATE))
|
|
_cropzeros(text);
|
|
|
|
/* check if result was negative, save '-' for later */
|
|
/* and point to positive part (this is for '0' padding) */
|
|
if (*text == '-') {
|
|
flags |= FL_NEGATIVE;
|
|
++text;
|
|
}
|
|
|
|
textlen = strlen(text); /* compute length of text */
|
|
}
|
|
break;
|
|
#endif // NOFLOATS
|
|
|
|
case 'd':
|
|
case 'i':
|
|
/* signed decimal output */
|
|
flags |= FL_SIGNED;
|
|
radix = 10;
|
|
goto COMMON_INT;
|
|
|
|
case 'u':
|
|
radix = 10;
|
|
goto COMMON_INT;
|
|
|
|
case 'p':
|
|
/* write a pointer -- this is like an integer or long */
|
|
/* except we force precision to pad with zeros and */
|
|
/* output in big hex. */
|
|
|
|
precision = 2 * sizeof(void FAR *); /* number of hex digits needed */
|
|
#if !PTR_IS_INT
|
|
flags |= FL_LONG; /* assume we're converting a long */
|
|
#endif
|
|
/* DROP THROUGH to hex formatting */
|
|
|
|
case 'C':
|
|
case 'X':
|
|
/* unsigned upper hex output */
|
|
hexadd = 'A' - '9' - 1; /* set hexadd for uppercase hex */
|
|
goto COMMON_HEX;
|
|
|
|
case 'x':
|
|
/* unsigned lower hex output */
|
|
hexadd = 'a' - '9' - 1; /* set hexadd for lowercase hex */
|
|
/* DROP THROUGH TO COMMON_HEX */
|
|
|
|
COMMON_HEX:
|
|
radix = 16;
|
|
if (flags & FL_ALTERNATE) {
|
|
/* alternate form means '0x' prefix */
|
|
prefix[0] = '0';
|
|
prefix[1] = (char)('x' - 'a' + '9' + 1 + hexadd); /* 'x' or 'X' */
|
|
prefixlen = 2;
|
|
}
|
|
goto COMMON_INT;
|
|
|
|
case 'o':
|
|
/* unsigned octal output */
|
|
radix = 8;
|
|
if (flags & FL_ALTERNATE) {
|
|
/* alternate form means force a leading 0 */
|
|
flags |= FL_FORCEOCTAL;
|
|
}
|
|
/* DROP THROUGH to COMMON_INT */
|
|
|
|
COMMON_INT: {
|
|
/* This is the general integer formatting routine. */
|
|
/* Basically, we get an argument, make it positive */
|
|
/* if necessary, and convert it according to the */
|
|
/* correct radix, setting text and textlen */
|
|
/* appropriately. */
|
|
|
|
unsigned long number; /* number to convert */
|
|
int digit; /* ascii value of digit */
|
|
long l; /* temp long value */
|
|
|
|
/* 1. read argument into l, sign extend as needed */
|
|
#if !LONG_IS_INT
|
|
if (flags & FL_LONG)
|
|
l = get_long_arg(&argptr);
|
|
else
|
|
#endif
|
|
|
|
#if !SHORT_IS_INT
|
|
if (flags & FL_SHORT) {
|
|
if (flags & FL_SIGNED)
|
|
l = (short) get_int_arg(&argptr); /* sign extend */
|
|
else
|
|
l = (unsigned short) get_int_arg(&argptr); /* zero-extend*/
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (flags & FL_SIGNED)
|
|
l = get_int_arg(&argptr); /* sign extend */
|
|
else
|
|
l = (unsigned int) get_int_arg(&argptr); /* zero-extend*/
|
|
}
|
|
|
|
/* 2. check for negative; copy into number */
|
|
if ( (flags & FL_SIGNED) && l < 0) {
|
|
number = -l;
|
|
flags |= FL_NEGATIVE; /* remember negative sign */
|
|
}
|
|
else {
|
|
number = l;
|
|
}
|
|
|
|
/* 3. check precision value for default; non-default */
|
|
/* turns off 0 flag, according to ANSI. */
|
|
if (precision < 0)
|
|
precision = 1; /* default precision */
|
|
else
|
|
flags &= ~FL_LEADZERO;
|
|
|
|
/* 4. Check if data is 0; if so, turn off hex prefix */
|
|
if (number == 0)
|
|
prefixlen = 0;
|
|
|
|
/* 5. Convert data to ASCII -- note if precision is zero */
|
|
/* and number is zero, we get no digits at all. */
|
|
|
|
text2 = text = &buffer[BUFFERSIZE-1]; // last digit at end of buffer
|
|
flags &= ~FL_WIDE; // 8 bit characters
|
|
|
|
while (precision-- > 0 || number != 0) {
|
|
digit = (int)(number % radix) + '0';
|
|
number /= radix; /* reduce number */
|
|
if (digit > '9') {
|
|
/* a hex digit, make it a letter */
|
|
digit += hexadd;
|
|
}
|
|
*text-- = (char)digit; /* store the digit */
|
|
}
|
|
|
|
textlen = text2 - text; /* compute length of number */
|
|
++text; /* text points to first digit now */
|
|
|
|
|
|
/* 6. Force a leading zero if FORCEOCTAL flag set */
|
|
if ((flags & FL_FORCEOCTAL) && (text[0] != '0' || textlen == 0)) {
|
|
*--text = '0';
|
|
++textlen; /* add a zero */
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* At this point, we have done the specific conversion, and */
|
|
/* 'text' points to text to print; 'textlen' is length. Now we */
|
|
/* justify it, put on prefixes, leading zeros, and then */
|
|
/* print it. */
|
|
|
|
if (!no_output) {
|
|
int padding; /* amount of padding, negative means zero */
|
|
|
|
if (flags & FL_SIGNED) {
|
|
if (flags & FL_NEGATIVE) {
|
|
/* prefix is a '-' */
|
|
prefix[0] = '-';
|
|
prefixlen = 1;
|
|
}
|
|
else if (flags & FL_SIGN) {
|
|
/* prefix is '+' */
|
|
prefix[0] = '+';
|
|
prefixlen = 1;
|
|
}
|
|
else if (flags & FL_SIGNSP) {
|
|
/* prefix is ' ' */
|
|
prefix[0] = ' ';
|
|
prefixlen = 1;
|
|
}
|
|
}
|
|
|
|
/* calculate amount of padding -- might be negative, */
|
|
/* but this will just mean zero */
|
|
padding = fldwidth - textlen - prefixlen;
|
|
|
|
/* put out the padding, prefix, and text, in the correct order */
|
|
|
|
if (!(flags & (FL_LEFT | FL_LEADZERO))) {
|
|
/* pad on left with blanks */
|
|
f->writechar(' ', padding, f, &charsout);
|
|
}
|
|
|
|
/* write prefix */
|
|
writestring(prefix, prefixlen, f, &charsout, 0);
|
|
|
|
if ((flags & FL_LEADZERO) && !(flags & FL_LEFT)) {
|
|
/* write leading zeros */
|
|
f->writechar('0', padding, f, &charsout);
|
|
}
|
|
|
|
/* write text */
|
|
writestring(text, textlen, f, &charsout, flags & FL_WIDE);
|
|
|
|
if (flags & FL_LEFT) {
|
|
/* pad on right with blanks */
|
|
f->writechar(' ', padding, f, &charsout);
|
|
}
|
|
|
|
/* we're done! */
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return charsout; /* return value = number of characters written */
|
|
}
|
|
|
|
|
|
/***
|
|
*int get_int_arg(va_list pargptr)
|
|
*
|
|
*Purpose:
|
|
* Gets an int argument off the given argument list and updates *pargptr.
|
|
*
|
|
*Entry:
|
|
* va_list pargptr - pointer to argument list; updated by function
|
|
*
|
|
*Exit:
|
|
* Returns the integer argument read from the argument list.
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
LOCAL(int) get_int_arg(va_list FAR *pargptr)
|
|
{
|
|
return va_arg(*pargptr, int);
|
|
}
|
|
|
|
/***
|
|
*long get_long_arg(va_list pargptr)
|
|
*
|
|
*Purpose:
|
|
* Gets an long argument off the given argument list and updates pargptr.
|
|
*
|
|
*Entry:
|
|
* va_list pargptr - pointer to argument list; updated by function
|
|
*
|
|
*Exit:
|
|
* Returns the long argument read from the argument list.
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
|
|
#if !LONG_IS_INT
|
|
LOCAL(long) get_long_arg(va_list FAR *pargptr)
|
|
{
|
|
return va_arg(*pargptr, long);
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
/***
|
|
*void writestring(char *string, int len, struct w4io *f, int *pcchwritten, int fwide)
|
|
*
|
|
*Purpose:
|
|
* Writes a string of the given length to the given file. If no error occurs,
|
|
* then *pcchwritten is incremented by len; otherwise, *pcchwritten is set
|
|
* to -1. If len is negative, it is treated as zero.
|
|
*
|
|
*Entry:
|
|
* char *string - string to write (NOT null-terminated)
|
|
* int len - length of string
|
|
* struct w4io *f - file to write to
|
|
* int *pcchwritten - pointer to integer to update with total chars written
|
|
* int fwide - wide character flag
|
|
*
|
|
*Exit:
|
|
* No return value.
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
LOCAL(void) writestring(
|
|
char FAR *string,
|
|
int len,
|
|
struct w4io FAR *f,
|
|
int FAR *pcchwritten,
|
|
int fwide)
|
|
{
|
|
wchar_t FAR *pwc;
|
|
|
|
//printf("string: str=%.*s, len=%d, cch=%d, f=%d\n", len, string, len, *pcchwritten, fwide);
|
|
if (fwide) {
|
|
pwc = (wchar_t FAR *) string;
|
|
while (len-- > 0) {
|
|
if (*pwc & 0xff00) {
|
|
f->writechar('^', 1, f, pcchwritten);
|
|
}
|
|
f->writechar((char) *pwc++, 1, f, pcchwritten);
|
|
}
|
|
} else {
|
|
while (len-- > 0) {
|
|
f->writechar(*string++, 1, f, pcchwritten);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // DBG == 1
|