+++ /dev/null
-/*
- * PROGRAMMERS: David Welch
- * Eric Kohl
- *
- * TODO:
- * - Verify the implementation of '%Z'.
- */
-
-/*
- * linux/lib/vsprintf.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
-/*
- * Wirzenius wrote this portably, Torvalds fucked it up :-)
- */
-
-#include <ndk/ntndk.h>
-
-#define ZEROPAD 1 /* pad with zero */
-#define SIGN 2 /* unsigned/signed long */
-#define PLUS 4 /* show plus */
-#define SPACE 8 /* space if plus */
-#define LEFT 16 /* left justified */
-#define SPECIAL 32 /* 0x */
-#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
-#define REMOVEHEX 256 /* use 256 as remve 0x frim BASE 16 */
-typedef struct {
- unsigned int mantissal:32;
- unsigned int mantissah:20;
- unsigned int exponent:11;
- unsigned int sign:1;
-} double_t;
-
-static
-__inline
-int
-_isinf(double __x)
-{
- union
- {
- double* __x;
- double_t* x;
- } x;
-
- x.__x = &__x;
- return ( x.x->exponent == 0x7ff && ( x.x->mantissah == 0 && x.x->mantissal == 0 ));
-}
-
-static
-__inline
-int
-_isnan(double __x)
-{
- union
- {
- double* __x;
- double_t* x;
- } x;
- x.__x = &__x;
- return ( x.x->exponent == 0x7ff && ( x.x->mantissah != 0 || x.x->mantissal != 0 ));
-}
-
-
-static
-__inline
-int
-do_div(long long *n, int base)
-{
- int a;
- a = ((unsigned long long) *n) % (unsigned) base;
- *n = ((unsigned long long) *n) / (unsigned) base;
- return a;
-}
-
-
-static int skip_atoi(const char **s)
-{
- int i=0;
-
- while (isdigit(**s))
- i = i*10 + *((*s)++) - '0';
- return i;
-}
-
-
-static char *
-number(char * buf, char * end, long long num, int base, int size, int precision, int type)
-{
- char c,sign,tmp[66];
- const char *digits;
- const char *small_digits = "0123456789abcdefghijklmnopqrstuvwxyz";
- const char *large_digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
- int i;
-
- digits = (type & LARGE) ? large_digits : small_digits;
- if (type & LEFT)
- type &= ~ZEROPAD;
- if (base < 2 || base > 36)
- return 0;
- c = (type & ZEROPAD) ? '0' : ' ';
- sign = 0;
- if (type & SIGN) {
- if (num < 0) {
- sign = '-';
- num = -num;
- size--;
- } else if (type & PLUS) {
- sign = '+';
- size--;
- } else if (type & SPACE) {
- sign = ' ';
- size--;
- }
- }
-
- if ((type & SPECIAL) && ((type & REMOVEHEX) == 0)) {
- if (base == 16)
- size -= 2;
-
- }
- i = 0;
- if ((num == 0) && (precision !=0))
- tmp[i++] = '0';
- else while (num != 0)
- tmp[i++] = digits[do_div(&num,base)];
- if (i > precision)
- precision = i;
- size -= precision;
- if (!(type&(ZEROPAD+LEFT))) {
- while(size-->0) {
- if (buf <= end)
- *buf = ' ';
- ++buf;
- }
- }
- if (sign) {
- if (buf <= end)
- *buf = sign;
- ++buf;
- }
-
- if ((type & SPECIAL) && ((type & REMOVEHEX) == 0)) {
- if (base==16) {
- if (buf <= end)
- *buf = '0';
- ++buf;
- if (buf <= end)
- *buf = digits[33];
- ++buf;
- }
- }
-
- if (!(type & LEFT)) {
- while (size-- > 0) {
- if (buf <= end)
- *buf = c;
- ++buf;
- }
- }
- while (i < precision--) {
- if (buf <= end)
- *buf = '0';
- ++buf;
- }
- while (i-- > 0) {
- if (buf <= end)
- *buf = tmp[i];
- ++buf;
- }
- while (size-- > 0) {
- if (buf <= end)
- *buf = ' ';
- ++buf;
- }
-
- return buf;
-}
-
-static char *
-numberf(char * buf, char * end, double num, int base, int size, int precision, int type)
-{
- char c,sign,tmp[66];
- const char *digits;
- const char *small_digits = "0123456789abcdefghijklmnopqrstuvwxyz";
- const char *large_digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
- int i;
- long long x;
-
- /* FIXME
- the float version of number is direcly copy of number
- */
-
- digits = (type & LARGE) ? large_digits : small_digits;
- if (type & LEFT)
- type &= ~ZEROPAD;
- if (base < 2 || base > 36)
- return 0;
- c = (type & ZEROPAD) ? '0' : ' ';
- sign = 0;
- if (type & SIGN) {
- if (num < 0) {
- sign = '-';
- num = -num;
- size--;
- } else if (type & PLUS) {
- sign = '+';
- size--;
- } else if (type & SPACE) {
- sign = ' ';
- size--;
- }
- }
- if (type & SPECIAL) {
- if (base == 16)
- size -= 2;
- else if (base == 8)
- size--;
- }
- i = 0;
- if (num == 0)
- tmp[i++] = '0';
- else while (num != 0)
- {
- x = num;
- tmp[i++] = digits[do_div(&x,base)];
- num=x;
- }
- if (i > precision)
- precision = i;
- size -= precision;
- if (!(type&(ZEROPAD+LEFT))) {
- while(size-->0) {
- if (buf <= end)
- *buf = ' ';
- ++buf;
- }
- }
- if (sign) {
- if (buf <= end)
- *buf = sign;
- ++buf;
- }
- if (type & SPECIAL) {
- if (base==8) {
- if (buf <= end)
- *buf = '0';
- ++buf;
- } else if (base==16) {
- if (buf <= end)
- *buf = '0';
- ++buf;
- if (buf <= end)
- *buf = digits[33];
- ++buf;
- }
- }
- if (!(type & LEFT)) {
- while (size-- > 0) {
- if (buf <= end)
- *buf = c;
- ++buf;
- }
- }
- while (i < precision--) {
- if (buf <= end)
- *buf = '0';
- ++buf;
- }
- while (i-- > 0) {
- if (buf <= end)
- *buf = tmp[i];
- ++buf;
- }
- while (size-- > 0) {
- if (buf <= end)
- *buf = ' ';
- ++buf;
- }
- return buf;
-}
-
-static char*
-string(char* buf, char* end, const char* s, int len, int field_width, int precision, int flags)
-{
- int i;
- char c;
-
- c = (flags & ZEROPAD) ? '0' : ' ';
-
- if (s == NULL)
- {
- s = "<NULL>";
- len = 6;
- }
- else
- {
- if (len == -1)
- {
- len = 0;
- while ((unsigned int)len < (unsigned int)precision && s[len])
- len++;
- }
- else
- {
- if ((unsigned int)len > (unsigned int)precision)
- len = precision;
- }
- }
- if (!(flags & LEFT))
- while (len < field_width--)
- {
- if (buf <= end)
- *buf = c;
- ++buf;
- }
- for (i = 0; i < len; ++i)
- {
- if (buf <= end)
- *buf = *s++;
- ++buf;
- }
- while (len < field_width--)
- {
- if (buf <= end)
- *buf = ' ';
- ++buf;
- }
- return buf;
-}
-
-static char*
-stringw(char* buf, char* end, const wchar_t* sw, int len, int field_width, int precision, int flags)
-{
- int i;
- char c;
-
- c = (flags & ZEROPAD) ? '0' : ' ';
-
- if (sw == NULL)
- {
- sw = L"<NULL>";
- len = 6;
- }
- else
- {
- if (len == -1)
- {
- len = 0;
- while ((unsigned int)len < (unsigned int)precision && sw[len])
- len++;
- }
- else
- {
- if ((unsigned int)len > (unsigned int)precision)
- len = precision;
- }
- }
- if (!(flags & LEFT))
- while (len < field_width--)
- {
- if (buf <= end)
- *buf = c;
- buf++;
- }
- for (i = 0; i < len; ++i)
- {
- if (buf <= end)
- *buf = (unsigned char)(*sw++);
- buf++;
- }
- while (len < field_width--)
- {
- if (buf <= end)
- *buf = ' ';
- buf++;
- }
- return buf;
-}
-
-/*
- * @implemented
- */
-int __cdecl _vsnprintf(char *buf, size_t cnt, const char *fmt, va_list args)
-{
- int len;
- unsigned long long num;
- double _double;
-
- int base;
- char *str, *end;
- const char *s;
- const wchar_t *sw;
-
- int flags; /* flags to number() */
-
- int field_width; /* width of output field */
- int precision; /* min. # of digits for integers; max
- number of chars for from string */
- int qualifier; /* 'h', 'l', 'L', 'I' or 'w' for integer fields */
-
- /* clear the string buffer with zero so we do not need NULL terment it at end */
-
- str = buf;
- end = buf + cnt - 1;
- if (end < buf - 1) {
- end = ((char *) -1);
- cnt = end - buf + 1;
- }
-
- for ( ; *fmt ; ++fmt) {
- if (*fmt != '%') {
- if (str <= end)
- *str = *fmt;
- ++str;
- continue;
- }
-
- /* process flags */
- flags = 0;
- repeat:
- ++fmt; /* this also skips first '%' */
- switch (*fmt) {
- case '-': flags |= LEFT; goto repeat;
- case '+': flags |= PLUS; goto repeat;
- case ' ': flags |= SPACE; goto repeat;
- case '#': flags |= SPECIAL; goto repeat;
- case '0': flags |= ZEROPAD; goto repeat;
- }
-
- /* get field width */
- field_width = -1;
- if (isdigit(*fmt))
- field_width = skip_atoi(&fmt);
- else if (*fmt == '*') {
- ++fmt;
- /* it's the next argument */
- field_width = va_arg(args, int);
- if (field_width < 0) {
- field_width = -field_width;
- flags |= LEFT;
- }
- }
-
- /* get the precision */
- precision = -1;
- if (*fmt == '.') {
- ++fmt;
- if (isdigit(*fmt))
- precision = skip_atoi(&fmt);
- else if (*fmt == '*') {
- ++fmt;
- /* it's the next argument */
- precision = va_arg(args, int);
- }
- if (precision < 0)
- precision = 0;
- }
-
- /* get the conversion qualifier */
- qualifier = -1;
- if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt == 'w') {
- qualifier = *fmt;
- ++fmt;
- } else if (*fmt == 'I' && *(fmt+1) == '6' && *(fmt+2) == '4') {
- qualifier = *fmt;
- fmt += 3;
- } else if (*fmt == 'I' && *(fmt+1) == '3' && *(fmt+2) == '2') {
- qualifier = 'l';
- fmt += 3;
- } else if (*fmt == 'F' && *(fmt+1) == 'p') {
- fmt += 1;
- flags |= REMOVEHEX;
- }
-
- /* default base */
- base = 10;
-
- switch (*fmt) {
- case 'c': /* finished */
- if (qualifier == 'l' || qualifier == 'w') {
- wchar_t sw1[2];
- /* print unicode string */
- sw1[0] = (wchar_t) va_arg(args, int);
- sw1[1] = 0;
- str = stringw(str, end, (wchar_t *)&sw1, -1, field_width, precision, flags);
- } else {
- char s1[2];
- /* print ascii string */
- s1[0] = ( unsigned char) va_arg(args, int);
- s1[1] = 0;
- str = string(str, end, (char *)&s1, -1, field_width, precision, flags);
- }
- continue;
-
- case 'C': /* finished */
- if (!(flags & LEFT))
- while (--field_width > 0) {
- if (str <= end)
- *str = ' ';
- ++str;
- }
- if (qualifier == 'h') {
- if (str <= end)
- *str = (unsigned char) va_arg(args, int);
- ++str;
- } else {
- if (str <= end)
- *str = (unsigned char)(wchar_t) va_arg(args, int);
- ++str;
- }
- while (--field_width > 0) {
- if (str <= end)
- *str = ' ';
- ++str;
- }
- continue;
-
- case 's': /* finished */
- if (qualifier == 'l' || qualifier == 'w') {
- /* print unicode string */
- sw = va_arg(args, wchar_t *);
- str = stringw(str, end, sw, -1, field_width, precision, flags);
- } else {
- /* print ascii string */
- s = va_arg(args, char *);
- str = string(str, end, s, -1, field_width, precision, flags);
- }
- continue;
-
- case 'S':
- if (qualifier == 'h') {
- /* print ascii string */
- s = va_arg(args, char *);
- str = string(str, end, s, -1, field_width, precision, flags);
- } else {
- /* print unicode string */
- sw = va_arg(args, wchar_t *);
- str = stringw(str, end, sw, -1, field_width, precision, flags);
- }
- continue;
-
- case 'Z':
- if (qualifier == 'w') {
- /* print counted unicode string */
- PUNICODE_STRING pus = va_arg(args, PUNICODE_STRING);
- if ((pus == NULL) || (pus->Buffer == NULL)) {
- sw = NULL;
- len = -1;
- } else {
- sw = pus->Buffer;
- len = pus->Length / sizeof(WCHAR);
- }
- str = stringw(str, end, sw, len, field_width, precision, flags);
- } else {
- /* print counted ascii string */
- PANSI_STRING pus = va_arg(args, PANSI_STRING);
- if ((pus == NULL) || (pus->Buffer == NULL)) {
- s = NULL;
- len = -1;
- } else {
- s = pus->Buffer;
- len = pus->Length;
- }
- str = string(str, end, s, len, field_width, precision, flags);
- }
- continue;
-
- case 'p':
- if ((flags & LARGE) == 0)
- flags |= LARGE;
-
- if (field_width == -1) {
- field_width = 2 * sizeof(void *);
- flags |= ZEROPAD;
- }
- str = number(str, end,
- (ULONG_PTR) va_arg(args, void *), 16,
- field_width, precision, flags);
- continue;
-
- case 'n':
- /* FIXME: What does C99 say about the overflow case here? */
- if (qualifier == 'l') {
- long * ip = va_arg(args, long *);
- *ip = (str - buf);
- } else {
- int * ip = va_arg(args, int *);
- *ip = (str - buf);
- }
- continue;
-
- /* float number formats - set up the flags and "break" */
- case 'e':
- case 'E':
- case 'f':
- case 'g':
- case 'G':
- _double = (double)va_arg(args, double);
- if ( _isnan(_double) ) {
- s = "Nan";
- len = 3;
- while ( len > 0 ) {
- if (str <= end)
- *str = *s++;
- ++str;
- len --;
- }
- } else if ( _isinf(_double) < 0 ) {
- s = "-Inf";
- len = 4;
- while ( len > 0 ) {
- if (str <= end)
- *str = *s++;
- ++str;
- len --;
- }
- } else if ( _isinf(_double) > 0 ) {
- s = "+Inf";
- len = 4;
- while ( len > 0 ) {
- if (str <= end)
- *str = *s++;
- ++str;
- len --;
- }
- } else {
- if ( precision == -1 )
- precision = 6;
- str = numberf(str, end, (int)_double, base, field_width, precision, flags);
- }
-
- continue;
-
-
- /* integer number formats - set up the flags and "break" */
- case 'o':
- base = 8;
- break;
-
- case 'b':
- base = 2;
- break;
-
- case 'X':
- flags |= LARGE;
- case 'x':
- base = 16;
- break;
-
- case 'd':
- case 'i':
- flags |= SIGN;
- case 'u':
- break;
-
- default:
- if (*fmt) {
- if (str <= end)
- *str = *fmt;
- ++str;
- } else
- --fmt;
- continue;
- }
-
- if (qualifier == 'I')
- num = va_arg(args, unsigned long long);
- else if (qualifier == 'l') {
- if (flags & SIGN)
- num = va_arg(args, long);
- else
- num = va_arg(args, unsigned long);
- }
- else if (qualifier == 'h') {
- if (flags & SIGN)
- num = va_arg(args, int);
- else
- num = va_arg(args, unsigned int);
- }
- else {
- if (flags & SIGN)
- num = va_arg(args, int);
- else
- num = va_arg(args, unsigned int);
- }
- str = number(str, end, num, base, field_width, precision, flags);
- }
- if (str <= end)
- *str = '\0';
- else if (cnt > 0)
- /* don't write out a null byte if the buf size is zero */
- *end = '\0';
- return str-buf;
-}
-
-
-/*
- * @implemented
- */
-int sprintf(char * buf, const char *fmt, ...)
-{
- va_list args;
- int i;
-
- va_start(args, fmt);
- i=_vsnprintf(buf,MAXLONG,fmt,args);
- va_end(args);
- return i;
-}
-
-
-/*
- * @implemented
- */
-int _snprintf(char * buf, size_t cnt, const char *fmt, ...)
-{
- va_list args;
- int i;
-
- va_start(args, fmt);
- i=_vsnprintf(buf,cnt,fmt,args);
- va_end(args);
- return i;
-}
-
-
-/*
- * @implemented
- */
-int __cdecl vsprintf(char *buf, const char *fmt, va_list args)
-{
- return _vsnprintf(buf,MAXLONG,fmt,args);
-}
-
-/* EOF */
projects / reactos.git / blobdiff