+++ /dev/null
-/*!
- * \file
- * <!--
- * Copyright (C) 2003,2004 Develer S.r.l. (http://www.develer.com/)
- * All Rights Reserved.
- * -->
- *
- * \version $Id$
- *
- * \brief Basic "printf", "sprintf" and "fprintf" formatter.
- *
- * This module is 100% reentrant and can be adapted to user-defined routines
- * that needs formatters with special properties like different output chann-
- * els or new format specifiers.
- *
- * To reduce size in applications not using real numbers or long integers
- * the formatter may be compiled to exclude certain parts. This is
- * controlled by giving a -D option a compilation time.
- *
- * -DFLOAT_SUPPORT Full ANSI formatter
- * -DNO_FLOATS Full ANSI except floats
- * -DREDUCED_SUPPORT Reduced 'int' type of converter
- *
- * The reduced version of formatter is suitable when program size is critical
- * rather than formatting power. This routine uses less than 20 bytes of
- * stack space which makes it practical even in systems with less than 256
- * bytes of user RAM.
- *
- * The only formatting specifiers supported by the reduced formatter are:
- * \code
- * %% %c %s %d %o %x %X and %hd %ho %hx %hX %ld %lo %lx %lX
- * \endcode
- *
- * It means that real variables are not supported as well as field
- * width and precision arguments.
- *
- * The last eight (h and l modifiers) can easily be removed by
- * removing the line "#define MODIFIERS_IN_REDUCED".
- */
-
-/*
- * $Log$
- * Revision 1.1 2004/05/23 15:43:16 bernie
- * Import mware modules.
- *
- */
-
-/* bernie */
-#define FLOAT_SUPPORT
-#undef NO_FLOATS
-#undef REDUCED_SUPPORT
-
-#ifndef FLOAT_SUPPORT
-#ifndef NO_FLOATS
-#ifndef REDUCED_SUPPORT
-#error -DFLOAT_SUPPORT, -DNO_FLOATS or -DREDUCED_SUPPORT missing
-#endif
-#endif
-#endif
-
-/* Make it easy for customers to disable h and l
- modifiers in REDUCED_SUPPORT by removing the next #define */
-#define MODIFIERS_IN_REDUCED
-
-#include "formatwr.h"
-#include "compiler.h" /* progmem macros */
-#include <float.h>
-
-#ifndef FRMWRI_BUFSIZE
-/*bernie: save some memory, who cares about floats with lots of decimals? */
-/*#define FRMWRI_BUFSIZE 134*/
-#define FRMWRI_BUFSIZE 32
-#endif
-
-#ifndef MEM_ATTRIBUTE
-#define MEM_ATTRIBUTE
-#endif
-
-#ifdef MODIFIERS_IN_REDUCED
-#define IS_SHORT (h_modifier || (sizeof(int) == 2 && !l_modifier))
-#else
-#define IS_SHORT (sizeof(int) == 2)
-#endif
-
-
-#ifdef FLOAT_SUPPORT
-
-static char *float_conversion(MEM_ATTRIBUTE long double value,
- MEM_ATTRIBUTE short nr_of_digits,
- MEM_ATTRIBUTE char *buf,
- MEM_ATTRIBUTE char format_flag,
- MEM_ATTRIBUTE char g_flag,
- MEM_ATTRIBUTE char alternate_flag)
-{
- MEM_ATTRIBUTE char *cp;
- MEM_ATTRIBUTE char *buf_pointer;
- MEM_ATTRIBUTE short n, i, dec_point_pos, integral_10_log;
-
- buf_pointer = buf;
- integral_10_log = 0;
-
- if (value >= 1)
- {
- while (value >= 1e11) /* To speed up things a bit */
- {
- value /= 1e10;
- integral_10_log += 10;
- }
- while (value >= 10)
- {
- value /= 10;
- integral_10_log++;
- }
- }
- else if (value) /* Not just 0.0 */
- {
- while (value <= 1e-10) /* To speed up things a bit */
- {
- value *= 1e10;
- integral_10_log -= 10;
- }
- while (value < 1)
- {
- value *= 10;
- integral_10_log--;
- }
- }
- if (g_flag)
- {
- if (integral_10_log < nr_of_digits && integral_10_log >= -4)
- {
- format_flag = 0;
- nr_of_digits -= integral_10_log;
- }
- nr_of_digits--;
- if (alternate_flag)
- {
- /* %#G - No removal of trailing zeros */
- g_flag = 0;
- }
- else
- {
- /* %G - Removal of trailing zeros */
- alternate_flag = 1;
- }
- }
-
- /* %e or %E */
- if (format_flag)
- {
- dec_point_pos = 0;
- }
- else
- {
- /* Less than one... */
- if (integral_10_log < 0)
- {
- *buf_pointer++ = '0';
- if ((n = nr_of_digits) || alternate_flag)
- {
- *buf_pointer++ = '.';
- }
- i = 0;
- while (--i > integral_10_log && nr_of_digits)
- {
- *buf_pointer++ = '0';
- nr_of_digits--;
- }
- if (integral_10_log < (-n - 1))
- {
- /* Nothing more to do */
- goto CLEAN_UP;
- }
- dec_point_pos = 1;
- }
- else
- {
- dec_point_pos = - integral_10_log;
- }
- }
-
- i = dec_point_pos;
- while (i <= nr_of_digits )
- {
- value -= (long double)(n = (short)value); /* n=Digit value=Remainder */
- value *= 10; /* Prepare for next shot */
- *buf_pointer++ = n + '0';
- if ( ! i++ && (nr_of_digits || alternate_flag))
- {
- *buf_pointer++ = '.';
- }
- }
-
- /* Rounding possible */
- if (value >= 5)
- {
- n = 1; /* Carry */
- cp = buf_pointer - 1;
- do
- {
- if (*cp != '.')
- {
- if ( (*cp += n) == ('9' + 1) )
- {
- *cp = '0';
- n = 1;
- }
- else
- {
- n = 0;
- }
- }
- } while (cp-- > buf);
- if (n)
- {
- /* %e or %E */
- if (format_flag)
- {
- cp = buf_pointer;
- while (cp > buf)
- {
- if (*(cp - 1) == '.')
- {
- *cp = *(cp - 2);
- cp--;
- }
- else
- {
- *cp = *(cp - 1);
- }
- cp--;
- }
- integral_10_log++;
- }
- else
- {
- cp = ++buf_pointer;
- while (cp > buf)
- {
- *cp = *(cp - 1);
- cp--;
- }
- }
- *buf = '1';
- }
- }
-
-CLEAN_UP:
- /* %G - Remove trailing zeros */
- if (g_flag)
- {
- while (*(buf_pointer - 1) == '0')
- {
- buf_pointer--;
- }
- if (*(buf_pointer - 1) == '.')
- {
- buf_pointer--;
- }
- }
-
- /* %e or %E */
- if (format_flag)
- {
- *buf_pointer++ = format_flag;
- if (integral_10_log < 0)
- {
- *buf_pointer++ = '-';
- integral_10_log = -integral_10_log;
- }
- else
- {
- *buf_pointer++ = '+';
- }
- n = 0;
- buf_pointer +=10;
- do
- {
- n++;
- *buf_pointer++ = (integral_10_log % 10) + '0';
- integral_10_log /= 10;
- } while ( integral_10_log || n < 2 );
- for ( i = n ; n > 0 ; n-- )
- *(buf_pointer - 11 - i + n) = *(buf_pointer - n);
- buf_pointer -= 10;
- }
- return (buf_pointer);
-}
-
-#endif /* FLOAT_SUPPORT */
-
-/*!
- * This routine forms the core and entry of the formatter.
- *
- * The conversion performed conforms to the ANSI specification for "printf".
- */
-int
-PGM_FUNC(_formatted_write)(const char * PGM_ATTR format,
- void put_one_char(char, void *),
- void *secret_pointer,
- va_list ap)
-{
- MEM_ATTRIBUTE static char bad_conversion[] = "???";
- MEM_ATTRIBUTE static char null_pointer[] = "<NULL>";
-
-#ifndef REDUCED_SUPPORT
- MEM_ATTRIBUTE char format_flag;
- MEM_ATTRIBUTE int precision;
- MEM_ATTRIBUTE int n;
- MEM_ATTRIBUTE int field_width, nr_of_chars;
- MEM_ATTRIBUTE char plus_space_flag, left_adjust, l_L_modifier;
- MEM_ATTRIBUTE char h_modifier, alternate_flag;
- MEM_ATTRIBUTE char nonzero_value;
- MEM_ATTRIBUTE unsigned long ulong, div_factor;
-
-#ifdef FLOAT_SUPPORT
- MEM_ATTRIBUTE long double fvalue;
-#endif
-
- MEM_ATTRIBUTE char *buf_pointer;
- MEM_ATTRIBUTE char *ptr;
- MEM_ATTRIBUTE const char *hex;
- MEM_ATTRIBUTE char zeropad;
- MEM_ATTRIBUTE char buf[FRMWRI_BUFSIZE];
-
- nr_of_chars = 0;
- for (;;) /* Until full format string read */
- {
- while ((format_flag = PGM_READ_CHAR(format++)) != '%') /* Until '%' or '\0' */
- {
- if (!format_flag)
- return (nr_of_chars);
- put_one_char (format_flag, secret_pointer);
- nr_of_chars++;
- }
- if (PGM_READ_CHAR(format) == '%') /* %% prints as % */
- {
- format++;
- put_one_char('%', secret_pointer);
- nr_of_chars++;
- continue;
- }
-
- plus_space_flag = left_adjust = alternate_flag = zeropad = 0;
- ptr = buf_pointer = &buf[0];
- hex = "0123456789ABCDEF";
-
- /* check for leading '-', '+', ' ','#' or '0' flags */
- for (;;)
- {
- switch (PGM_READ_CHAR(format))
- {
- case ' ':
- if (plus_space_flag)
- goto NEXT_FLAG;
- case '+':
- plus_space_flag = PGM_READ_CHAR(format);
- goto NEXT_FLAG;
- case '-':
- left_adjust++;
- goto NEXT_FLAG;
- case '#':
- alternate_flag++;
- goto NEXT_FLAG;
- case '0':
- zeropad++;
- goto NEXT_FLAG;
- }
- break;
-NEXT_FLAG:
- format++;
- }
-
- /* Optional field width (may be '*') */
- if (PGM_READ_CHAR(format) == '*')
- {
- field_width = va_arg(ap, int);
- if (field_width < 0)
- {
- field_width = -field_width;
- left_adjust++;
- }
- format++;
- }
- else
- {
- field_width = 0;
- while (PGM_READ_CHAR(format) >= '0' && PGM_READ_CHAR(format) <= '9')
- field_width = field_width * 10 + (PGM_READ_CHAR(format++) - '0');
- }
-
- if (left_adjust)
- zeropad = 0;
-
- /* Optional precision (or '*') */
- if (PGM_READ_CHAR(format) == '.')
- {
- if (PGM_READ_CHAR(++format) == '*')
- {
- precision = va_arg(ap, int);
- format++;
- }
- else
- {
- precision = 0;
- while (PGM_READ_CHAR(format) >= '0' && PGM_READ_CHAR(format) <= '9')
- precision = precision * 10 + (PGM_READ_CHAR(format++) - '0');
- }
- }
- else
- precision = -1;
-
- /* At this point, "left_adjust" is nonzero if there was
- * a sign, "zeropad" is 1 if there was a leading zero
- * and 0 otherwise, "field_width" and "precision"
- * contain numbers corresponding to the digit strings
- * before and after the decimal point, respectively,
- * and "plus_space_flag" is either 0 (no flag) or
- * contains a plus or space character. If there was no
- * decimal point, "precision" will be -1.
- */
-
- l_L_modifier = h_modifier = 0;
-
- /* Optional 'l','L' r 'h' modifier? */
- switch (PGM_READ_CHAR(format))
- {
- case 'l':
- case 'L':
- l_L_modifier++;
- format++;
- break;
- case 'h':
- h_modifier++;
- format++;
- break;
- }
-
- /*
- * At exit from the following switch, we will emit
- * the characters starting at "buf_pointer" and
- * ending at "ptr"-1
- */
- switch (format_flag = PGM_READ_CHAR(format++))
- {
-#if 0 /* bernie */
- case 'n':
- if (sizeof(short) != sizeof(int))
- {
- if (sizeof(int) != sizeof(long))
- {
- if (h_modifier)
- *va_arg(ap, short *) = nr_of_chars;
- else if (l_L_modifier)
- *va_arg(ap, long *) = nr_of_chars;
- else
- *va_arg(ap, int *) = nr_of_chars;
- }
- else
- {
- if (h_modifier)
- *va_arg(ap, short *) = nr_of_chars;
- else
- *va_arg(ap, int *) = nr_of_chars;
- }
- }
- else
- {
- if (l_L_modifier)
- *va_arg(ap, long *) = nr_of_chars;
- else
- *va_arg(ap, int *) = nr_of_chars;
- }
- continue;
-#endif
- case 'c':
- buf[0] = va_arg(ap, int);
- ptr++;
- break;
-
- case 's':
- if ( !(buf_pointer = va_arg(ap, char *)) )
- buf_pointer = null_pointer;
- if (precision < 0)
- precision = 10000;
- for (n=0; *buf_pointer++ && n < precision; n++)
- ;
- ptr = --buf_pointer;
- buf_pointer -= n;
- break;
-
- case 'o':
- if (alternate_flag && !precision)
- precision++;
- case 'x':
- hex = "0123456789abcdef";
- case 'u':
- case 'p':
- case 'X':
- if (format_flag == 'p')
-#if defined(__AVR__) || defined(__I196__) /* 16bit pointers */
- ulong = (unsigned long)(unsigned short)va_arg(ap, char *);
-#else /* 32bit pointers */
- ulong = (unsigned long)va_arg(ap, char *);
-#endif /* 32bit pointers */
- else if (sizeof(short) == sizeof(int))
- ulong = l_L_modifier ?
- va_arg(ap, unsigned long) : (unsigned long)va_arg(ap, unsigned int);
- else
- ulong = h_modifier ?
- (unsigned long)(unsigned short) va_arg(ap, int)
- : (unsigned long)va_arg(ap, int);
- div_factor = (format_flag == 'o') ?
- 8 : (format_flag == 'u') ? 10 : 16;
- plus_space_flag = 0;
- goto INTEGRAL_CONVERSION;
-
- case 'd':
- case 'i':
- if (sizeof(short) == sizeof(long))
- {
- if ( (long)(ulong = va_arg(ap, unsigned long)) < 0)
- {
- plus_space_flag = '-';
- ulong = (unsigned long)(-((signed long)ulong));
- }
- }
- else if (sizeof(short) == sizeof(int))
- {
- if ( (long)(ulong = l_L_modifier ?
- va_arg(ap,unsigned long) : (unsigned long)va_arg(ap,int)) < 0)
- {
- plus_space_flag = '-';
- ulong = (unsigned long)(-((signed long)ulong));
- }
- }
- else
- {
- if ( (signed long)(ulong = (unsigned long) (h_modifier ?
- (short) va_arg(ap, int) : va_arg(ap,int))) < 0)
- {
- plus_space_flag = '-';
- ulong = (unsigned long)(-((signed long)ulong));
- }
- }
- div_factor = 10;
-
- /* Now convert to digits */
-INTEGRAL_CONVERSION:
- ptr = buf_pointer = &buf[FRMWRI_BUFSIZE - 1];
- nonzero_value = (ulong != 0);
-
- /* No char if zero and zero precision */
- if (precision != 0 || nonzero_value)
- do
- *--buf_pointer = hex[ulong % div_factor];
- while (ulong /= div_factor);
-
- /* "precision" takes precedence */
- if (precision < 0)
- if (zeropad)
- precision = field_width - (plus_space_flag != 0);
- while (precision > (int)(ptr - buf_pointer))
- *--buf_pointer = '0';
-
- if (alternate_flag && nonzero_value)
- {
- if (format_flag == 'x' || format_flag == 'X')
- {
- *--buf_pointer = format_flag;
- *--buf_pointer = '0';
- }
- else if ((format_flag == 'o') && (*buf_pointer != '0'))
- {
- *--buf_pointer = '0';
- }
- }
- break;
-
-#ifdef FLOAT_SUPPORT
- case 'g':
- case 'G':
- n = 1;
- format_flag -= 2;
- if (! precision)
- {
- precision = 1;
- }
- goto FLOATING_CONVERSION;
- case 'f':
- format_flag = 0;
- case 'e':
- case 'E':
- n = 0;
-FLOATING_CONVERSION:
- if (precision < 0)
- {
- precision = 6;
- }
- if (sizeof(double) != sizeof(long double))
- {
- if ( (fvalue = l_L_modifier ?
- va_arg(ap,long double) : va_arg(ap,double)) < 0)
- {
- plus_space_flag = '-';
- fvalue = -fvalue;
- }
- }
- else if ( (fvalue = va_arg(ap,long double)) < 0)
- {
- plus_space_flag = '-';
- fvalue = -fvalue;
- }
- ptr = float_conversion (fvalue,
- (short)precision,
- buf_pointer += field_width,
- format_flag,
- (char)n,
- alternate_flag);
- if (zeropad)
- {
- precision = field_width - (plus_space_flag != 0);
- while (precision > ptr - buf_pointer)
- *--buf_pointer = '0';
- }
- break;
-
-#else /* !FLOAT_SUPPORT */
- case 'g':
- case 'G':
- case 'f':
- case 'e':
- case 'E':
- ptr = buf_pointer = bad_conversion;
- while (*ptr)
- ptr++;
- break;
-#endif /* !FLOAT_SUPPORT */
-
- case '\0': /* Really bad place to find NUL in */
- format--;
-
- default:
- /* Undefined conversion! */
- ptr = buf_pointer = bad_conversion;
- ptr += 3;
- break;
-
- }
-
- /*
- * This part emittes the formatted string to "put_one_char".
- */
-
- /* If field_width == 0 then nothing should be written. */
- precision = ptr - buf_pointer;
-
- if ( precision > field_width)
- {
- n = 0;
- }
- else
- {
- n = field_width - precision - (plus_space_flag != 0);
- }
-
- /* emit any leading pad characters */
- if (!left_adjust)
- while (--n >= 0)
- {
- put_one_char(' ', secret_pointer);
- nr_of_chars++;
- }
-
- /* emit flag characters (if any) */
- if (plus_space_flag)
- {
- put_one_char(plus_space_flag, secret_pointer);
- nr_of_chars++;
- }
-
- /* emit the string itself */
- while (--precision >= 0)
- {
- put_one_char(*buf_pointer++, secret_pointer);
- nr_of_chars++;
- }
-
- /* emit trailing space characters */
- if (left_adjust)
- while (--n >= 0)
- {
- put_one_char(' ', secret_pointer);
- nr_of_chars++;
- }
- }
-
-#else /* REDUCED_SUPPORT STARTS HERE */
-
-#ifdef MODIFIERS_IN_REDUCED
- char l_modifier, h_modifier;
- unsigned long u_val, div_val;
-#else
- unsigned int u_val, div_val;
-#endif
- char format_flag;
- unsigned int nr_of_chars, base;
- char outChar;
- char *ptr;
-
- nr_of_chars = 0;
- for (;;) /* Until full format string read */
- {
- while ((format_flag = PGM_READ_CHAR(format++)) != '%') /* Until '%' or '\0' */
- {
- if (!format_flag)
- return (nr_of_chars);
- put_one_char (format_flag, secret_pointer);
- nr_of_chars++;
- }
-
-#ifdef MODIFIERS_IN_REDUCED
- /*=================================*/
- /* Optional 'l' or 'h' modifiers ? */
- /*=================================*/
- l_modifier = h_modifier = 0;
- switch (PGM_READ_CHAR(format))
- {
- case 'l':
- l_modifier = 1;
- format++;
- break;
-
- case 'h':
- h_modifier = 1;
- format++;
- break;
- }
-#endif
-
- switch (format_flag = PGM_READ_CHAR(format++))
- {
- case 'c':
- format_flag = va_arg(ap, int);
- default:
- put_one_char (format_flag, secret_pointer);
- nr_of_chars++;
- continue;
-
- case 's':
- ptr = va_arg(ap, char *);
- while (format_flag = *ptr++)
- {
- put_one_char (format_flag, secret_pointer);
- nr_of_chars++;
- }
- continue;
-
- case 'o':
- base = 8;
- if (IS_SHORT)
- div_val = 0x8000;
- else
- div_val = 0x40000000;
- goto CONVERSION_LOOP;
-
- case 'd':
- base = 10;
- if (IS_SHORT)
- div_val = 10000;
- else
- div_val = 1000000000;
- goto CONVERSION_LOOP;
-
- case 'X':
- case 'x':
- base = 16;
- if (IS_SHORT)
- div_val = 0x1000;
- else
- div_val = 0x10000000;
-
-CONVERSION_LOOP:
-#ifdef MODIFIERS_IN_REDUCED
- if (h_modifier)
- u_val = (format_flag == 'd') ?
- (short)va_arg(ap, int) : (unsigned short)va_arg(ap, int);
- else if (l_modifier)
- u_val = va_arg(ap, long);
- else
- u_val = (format_flag == 'd') ?
- va_arg(ap,int) : va_arg(ap,unsigned int);
-#else
- u_val = va_arg(ap,int);
-#endif
- if (format_flag == 'd')
- {
- if (((int)u_val) < 0)
- {
- u_val = - u_val;
- put_one_char ('-', secret_pointer);
- nr_of_chars++;
- }
- }
- while (div_val > 1 && div_val > u_val)
- {
- div_val /= base;
- }
- do
- {
- outChar = (u_val / div_val) + '0';
- if (outChar > '9')
- if (format_flag == 'x')
- outChar += 'a'-'9'-1;
- else
- outChar += 'A'-'9'-1;
- put_one_char (outChar, secret_pointer);
- nr_of_chars++;
- u_val %= div_val;
- div_val /= base;
- }
- while (div_val);
-
- } /* end switch(format_flag...) */
- }
-#endif
-}
projects / bertos.git / blobdiff