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kaklik |
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/*! \file rprintf.c \brief printf routine and associated routines. */ |
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//***************************************************************************** |
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// |
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// File Name : 'rprintf.c' |
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// Title : printf routine and associated routines |
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// Author : Pascal Stang - Copyright (C) 2000-2002 |
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// Created : 2000.12.26 |
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// Revised : 2003.5.1 |
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// Version : 1.0 |
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// Target MCU : Atmel AVR series and other targets |
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// Editor Tabs : 4 |
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// |
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// NOTE: This code is currently below version 1.0, and therefore is considered |
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// to be lacking in some functionality or documentation, or may not be fully |
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// tested. Nonetheless, you can expect most functions to work. |
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// |
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// This code is distributed under the GNU Public License |
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// which can be found at http://www.gnu.org/licenses/gpl.txt |
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// |
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//***************************************************************************** |
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#include <avr/pgmspace.h> |
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//#include <string-avr.h> |
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//#include <stdlib.h> |
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#include <stdarg.h> |
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#include "global.h" |
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#include "rprintf.h" |
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#ifndef TRUE |
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#define TRUE -1 |
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#define FALSE 0 |
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#endif |
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#define INF 32766 // maximum field size to print |
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#define READMEMBYTE(a,char_ptr) ((a)?(pgm_read_byte(char_ptr)):(*char_ptr)) |
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#ifdef RPRINTF_COMPLEX |
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static unsigned char buf[128]; |
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#endif |
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// use this to store hex conversion in RAM |
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//static char HexChars[] = "0123456789ABCDEF"; |
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// use this to store hex conversion in program memory |
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//static prog_char HexChars[] = "0123456789ABCDEF"; |
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static char __attribute__ ((progmem)) HexChars[] = "0123456789ABCDEF"; |
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#define hexchar(x) pgm_read_byte( HexChars+((x)&0x0f) ) |
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//#define hexchar(x) ((((x)&0x0F)>9)?((x)+'A'-10):((x)+'0')) |
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// function pointer to single character output routine |
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static void (*rputchar)(unsigned char c); |
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// *** rprintf initialization *** |
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// you must call this function once and supply the character output |
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// routine before using other functions in this library |
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void rprintfInit(void (*putchar_func)(unsigned char c)) |
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{ |
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rputchar = putchar_func; |
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} |
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// *** rprintfChar *** |
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// send a character/byte to the current output device |
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void rprintfChar(unsigned char c) |
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{ |
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// do LF -> CR/LF translation |
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if(c == '\n') |
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rputchar('\r'); |
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// send character |
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rputchar(c); |
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} |
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// *** rprintfStr *** |
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// prints a null-terminated string stored in RAM |
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void rprintfStr(char str[]) |
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{ |
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// send a string stored in RAM |
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// check to make sure we have a good pointer |
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if (!str) return; |
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// print the string until a null-terminator |
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while (*str) |
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rprintfChar(*str++); |
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} |
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// *** rprintfStrLen *** |
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// prints a section of a string stored in RAM |
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// begins printing at position indicated by <start> |
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// prints number of characters indicated by <len> |
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void rprintfStrLen(char str[], unsigned int start, unsigned int len) |
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{ |
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register int i=0; |
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// check to make sure we have a good pointer |
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if (!str) return; |
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// spin through characters up to requested start |
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// keep going as long as there's no null |
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while((i++<start) && (*str++)); |
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// for(i=0; i<start; i++) |
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// { |
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// // keep steping through string as long as there's no null |
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// if(*str) str++; |
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// } |
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// then print exactly len characters |
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for(i=0; i<len; i++) |
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{ |
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// print data out of the string as long as we haven't reached a null yet |
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// at the null, start printing spaces |
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if(*str) |
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rprintfChar(*str++); |
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else |
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rprintfChar(' '); |
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} |
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} |
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// *** rprintfProgStr *** |
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// prints a null-terminated string stored in program ROM |
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void rprintfProgStr(const prog_char str[]) |
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{ |
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// print a string stored in program memory |
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register char c; |
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// check to make sure we have a good pointer |
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if (!str) return; |
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// print the string until the null-terminator |
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while((c = pgm_read_byte(str++))) |
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rprintfChar(c); |
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} |
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// *** rprintfCRLF *** |
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// prints carriage return and line feed |
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void rprintfCRLF(void) |
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{ |
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// print CR/LF |
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//rprintfChar('\r'); |
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// LF -> CR/LF translation built-in to rprintfChar() |
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rprintfChar('\n'); |
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} |
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// *** rprintfu04 *** |
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// prints an unsigned 4-bit number in hex (1 digit) |
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void rprintfu04(unsigned char data) |
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{ |
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// print 4-bit hex value |
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// char Character = data&0x0f; |
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// if (Character>9) |
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// Character+='A'-10; |
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// else |
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// Character+='0'; |
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rprintfChar(hexchar(data)); |
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} |
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// *** rprintfu08 *** |
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// prints an unsigned 8-bit number in hex (2 digits) |
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void rprintfu08(unsigned char data) |
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{ |
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// print 8-bit hex value |
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rprintfu04(data>>4); |
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rprintfu04(data); |
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} |
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// *** rprintfu16 *** |
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// prints an unsigned 16-bit number in hex (4 digits) |
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void rprintfu16(unsigned short data) |
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{ |
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// print 16-bit hex value |
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rprintfu08(data>>8); |
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rprintfu08(data); |
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} |
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// *** rprintfu32 *** |
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// prints an unsigned 32-bit number in hex (8 digits) |
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void rprintfu32(unsigned long data) |
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{ |
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// print 32-bit hex value |
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rprintfu16(data>>16); |
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rprintfu16(data); |
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} |
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// *** rprintfNum *** |
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// special printf for numbers only |
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// see formatting information below |
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// Print the number "n" in the given "base" |
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// using exactly "numDigits" |
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// print +/- if signed flag "isSigned" is TRUE |
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// use the character specified in "padchar" to pad extra characters |
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// |
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// Examples: |
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// uartPrintfNum(10, 6, TRUE, ' ', 1234); --> " +1234" |
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// uartPrintfNum(10, 6, FALSE, '0', 1234); --> "001234" |
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// uartPrintfNum(16, 6, FALSE, '.', 0x5AA5); --> "..5AA5" |
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void rprintfNum(char base, char numDigits, char isSigned, char padchar, long n) |
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{ |
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// define a global HexChars or use line below |
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//static char HexChars[16] = "0123456789ABCDEF"; |
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char *p, buf[32]; |
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unsigned long x; |
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unsigned char count; |
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// prepare negative number |
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if( isSigned && (n < 0) ) |
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{ |
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x = -n; |
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} |
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else |
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{ |
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x = n; |
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} |
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// setup little string buffer |
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count = (numDigits-1)-(isSigned?1:0); |
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p = buf + sizeof (buf); |
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*--p = '\0'; |
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// force calculation of first digit |
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// (to prevent zero from not printing at all!!!) |
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*--p = hexchar(x%base); x /= base; |
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// calculate remaining digits |
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while(count--) |
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{ |
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if(x != 0) |
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{ |
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// calculate next digit |
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*--p = hexchar(x%base); x /= base; |
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} |
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else |
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{ |
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// no more digits left, pad out to desired length |
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*--p = padchar; |
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} |
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} |
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// apply signed notation if requested |
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if( isSigned ) |
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{ |
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if(n < 0) |
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{ |
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*--p = '-'; |
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} |
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else if(n > 0) |
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{ |
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*--p = '+'; |
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} |
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else |
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{ |
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*--p = ' '; |
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} |
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} |
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// print the string right-justified |
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count = numDigits; |
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while(count--) |
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{ |
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rprintfChar(*p++); |
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} |
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} |
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#ifdef RPRINTF_FLOAT |
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// *** rprintfFloat *** |
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// floating-point print |
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void rprintfFloat(char numDigits, double x) |
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{ |
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unsigned char firstplace = FALSE; |
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unsigned char negative; |
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unsigned char i, digit; |
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double place = 1.0; |
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// save sign |
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negative = (x<0); |
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// convert to absolute value |
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x = (x>0)?(x):(-x); |
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// find starting digit place |
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for(i=0; i<15; i++) |
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{ |
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if((x/place) < 10.0) |
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break; |
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else |
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place *= 10.0; |
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} |
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// print polarity character |
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if(negative) |
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rprintfChar('-'); |
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else |
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rprintfChar('+'); |
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// print digits |
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for(i=0; i<numDigits; i++) |
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{ |
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digit = (x/place); |
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if(digit | firstplace | (place == 1.0)) |
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{ |
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firstplace = TRUE; |
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rprintfChar(digit+0x30); |
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} |
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else |
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rprintfChar(' '); |
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if(place == 1.0) |
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{ |
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rprintfChar('.'); |
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} |
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x -= (digit*place); |
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place /= 10.0; |
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} |
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} |
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#endif |
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#ifdef RPRINTF_SIMPLE |
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// *** rprintf1RamRom *** |
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// called by rprintf() - does a simple printf (supports %d, %x, %c) |
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// Supports: |
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// %d - decimal |
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// %x - hex |
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// %c - character |
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int rprintf1RamRom(unsigned char stringInRom, const char *format, ...) |
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{ |
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// simple printf routine |
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// define a global HexChars or use line below |
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//static char HexChars[16] = "0123456789ABCDEF"; |
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char format_flag; |
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unsigned int u_val, div_val, base; |
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va_list ap; |
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va_start(ap, format); |
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for (;;) |
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{ |
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while ((format_flag = READMEMBYTE(stringInRom,format++) ) != '%') |
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{ // Until '%' or '\0' |
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if (!format_flag) |
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{ |
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va_end(ap); |
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return(0); |
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} |
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rprintfChar(format_flag); |
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} |
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switch (format_flag = READMEMBYTE(stringInRom,format++) ) |
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{ |
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case 'c': format_flag = va_arg(ap,int); |
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default: rprintfChar(format_flag); continue; |
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case 'd': base = 10; div_val = 10000; goto CONVERSION_LOOP; |
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// case 'x': base = 16; div_val = 0x10; |
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case 'x': base = 16; div_val = 0x1000; |
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CONVERSION_LOOP: |
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u_val = va_arg(ap,int); |
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if (format_flag == 'd') |
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{ |
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if (((int)u_val) < 0) |
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{ |
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u_val = - u_val; |
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rprintfChar('-'); |
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} |
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while (div_val > 1 && div_val > u_val) div_val /= 10; |
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} |
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do |
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{ |
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//rprintfChar(pgm_read_byte(HexChars+(u_val/div_val))); |
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rprintfu04(u_val/div_val); |
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u_val %= div_val; |
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div_val /= base; |
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} while (div_val); |
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} |
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} |
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va_end(ap); |
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} |
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#endif |
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#ifdef RPRINTF_COMPLEX |
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// *** rprintf2RamRom *** |
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// called by rprintf() - does a more powerful printf (supports %d, %u, %o, %x, %c, %s) |
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// Supports: |
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// %d - decimal |
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// %u - unsigned decimal |
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// %o - octal |
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// %x - hex |
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// %c - character |
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// %s - strings |
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// and the width,precision,padding modifiers |
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// **this printf does not support floating point numbers |
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int rprintf2RamRom(unsigned char stringInRom, const char *sfmt, ...) |
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{ |
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register unsigned char *f, *bp; |
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register long l; |
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register unsigned long u; |
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register int i; |
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register int fmt; |
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register unsigned char pad = ' '; |
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int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
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int sign = 0; |
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va_list ap; |
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va_start(ap, sfmt); |
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f = (unsigned char *) sfmt; |
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for (; READMEMBYTE(stringInRom,f); f++) |
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{ |
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if (READMEMBYTE(stringInRom,f) != '%') |
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{ // not a format character |
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// then just output the char |
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rprintfChar(READMEMBYTE(stringInRom,f)); |
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} |
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else |
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{ |
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f++; // if we have a "%" then skip it |
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if (READMEMBYTE(stringInRom,f) == '-') |
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{ |
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flush_left = 1; // minus: flush left |
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f++; |
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} |
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418 |
if (READMEMBYTE(stringInRom,f) == '0' |
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|
419 |
|| READMEMBYTE(stringInRom,f) == '.') |
|
|
420 |
{ |
|
|
421 |
// padding with 0 rather than blank |
|
|
422 |
pad = '0'; |
|
|
423 |
f++; |
|
|
424 |
} |
|
|
425 |
if (READMEMBYTE(stringInRom,f) == '*') |
|
|
426 |
{ // field width |
|
|
427 |
f_width = va_arg(ap, int); |
|
|
428 |
f++; |
|
|
429 |
} |
|
|
430 |
else if (Isdigit(READMEMBYTE(stringInRom,f))) |
|
|
431 |
{ |
|
|
432 |
f_width = atoiRamRom(stringInRom, (char *) f); |
|
|
433 |
while (Isdigit(READMEMBYTE(stringInRom,f))) |
|
|
434 |
f++; // skip the digits |
|
|
435 |
} |
|
|
436 |
if (READMEMBYTE(stringInRom,f) == '.') |
|
|
437 |
{ // precision |
|
|
438 |
f++; |
|
|
439 |
if (READMEMBYTE(stringInRom,f) == '*') |
|
|
440 |
{ |
|
|
441 |
prec = va_arg(ap, int); |
|
|
442 |
f++; |
|
|
443 |
} |
|
|
444 |
else if (Isdigit(READMEMBYTE(stringInRom,f))) |
|
|
445 |
{ |
|
|
446 |
prec = atoiRamRom(stringInRom, (char *) f); |
|
|
447 |
while (Isdigit(READMEMBYTE(stringInRom,f))) |
|
|
448 |
f++; // skip the digits |
|
|
449 |
} |
|
|
450 |
} |
|
|
451 |
if (READMEMBYTE(stringInRom,f) == '#') |
|
|
452 |
{ // alternate form |
|
|
453 |
hash = 1; |
|
|
454 |
f++; |
|
|
455 |
} |
|
|
456 |
if (READMEMBYTE(stringInRom,f) == 'l') |
|
|
457 |
{ // long format |
|
|
458 |
do_long = 1; |
|
|
459 |
f++; |
|
|
460 |
} |
|
|
461 |
|
|
|
462 |
fmt = READMEMBYTE(stringInRom,f); |
|
|
463 |
bp = buf; |
|
|
464 |
switch (fmt) { // do the formatting |
|
|
465 |
case 'd': // 'd' signed decimal |
|
|
466 |
if (do_long) |
|
|
467 |
l = va_arg(ap, long); |
|
|
468 |
else |
|
|
469 |
l = (long) (va_arg(ap, int)); |
|
|
470 |
if (l < 0) |
|
|
471 |
{ |
|
|
472 |
sign = 1; |
|
|
473 |
l = -l; |
|
|
474 |
} |
|
|
475 |
do { |
|
|
476 |
*bp++ = l % 10 + '0'; |
|
|
477 |
} while ((l /= 10) > 0); |
|
|
478 |
if (sign) |
|
|
479 |
*bp++ = '-'; |
|
|
480 |
f_width = f_width - (bp - buf); |
|
|
481 |
if (!flush_left) |
|
|
482 |
while (f_width-- > 0) |
|
|
483 |
rprintfChar(pad); |
|
|
484 |
for (bp--; bp >= buf; bp--) |
|
|
485 |
rprintfChar(*bp); |
|
|
486 |
if (flush_left) |
|
|
487 |
while (f_width-- > 0) |
|
|
488 |
rprintfChar(' '); |
|
|
489 |
break; |
|
|
490 |
case 'o': // 'o' octal number |
|
|
491 |
case 'x': // 'x' hex number |
|
|
492 |
case 'u': // 'u' unsigned decimal |
|
|
493 |
if (do_long) |
|
|
494 |
u = va_arg(ap, unsigned long); |
|
|
495 |
else |
|
|
496 |
u = (unsigned long) (va_arg(ap, unsigned)); |
|
|
497 |
if (fmt == 'u') |
|
|
498 |
{ // unsigned decimal |
|
|
499 |
do { |
|
|
500 |
*bp++ = u % 10 + '0'; |
|
|
501 |
} while ((u /= 10) > 0); |
|
|
502 |
} |
|
|
503 |
else if (fmt == 'o') |
|
|
504 |
{ // octal |
|
|
505 |
do { |
|
|
506 |
*bp++ = u % 8 + '0'; |
|
|
507 |
} while ((u /= 8) > 0); |
|
|
508 |
if (hash) |
|
|
509 |
*bp++ = '0'; |
|
|
510 |
} |
|
|
511 |
else if (fmt == 'x') |
|
|
512 |
{ // hex |
|
|
513 |
do { |
|
|
514 |
i = u % 16; |
|
|
515 |
if (i < 10) |
|
|
516 |
*bp++ = i + '0'; |
|
|
517 |
else |
|
|
518 |
*bp++ = i - 10 + 'a'; |
|
|
519 |
} while ((u /= 16) > 0); |
|
|
520 |
if (hash) |
|
|
521 |
{ |
|
|
522 |
*bp++ = 'x'; |
|
|
523 |
*bp++ = '0'; |
|
|
524 |
} |
|
|
525 |
} |
|
|
526 |
i = f_width - (bp - buf); |
|
|
527 |
if (!flush_left) |
|
|
528 |
while (i-- > 0) |
|
|
529 |
rprintfChar(pad); |
|
|
530 |
for (bp--; bp >= buf; bp--) |
|
|
531 |
rprintfChar((int) (*bp)); |
|
|
532 |
if (flush_left) |
|
|
533 |
while (i-- > 0) |
|
|
534 |
rprintfChar(' '); |
|
|
535 |
break; |
|
|
536 |
case 'c': // 'c' character |
|
|
537 |
i = va_arg(ap, int); |
|
|
538 |
rprintfChar((int) (i)); |
|
|
539 |
break; |
|
|
540 |
case 's': // 's' string |
|
|
541 |
bp = va_arg(ap, unsigned char *); |
|
|
542 |
if (!bp) |
|
|
543 |
bp = (unsigned char *) "(nil)"; |
|
|
544 |
f_width = f_width - strlen((char *) bp); |
|
|
545 |
if (!flush_left) |
|
|
546 |
while (f_width-- > 0) |
|
|
547 |
rprintfChar(pad); |
|
|
548 |
for (i = 0; *bp && i < prec; i++) |
|
|
549 |
{ |
|
|
550 |
rprintfChar(*bp); |
|
|
551 |
bp++; |
|
|
552 |
} |
|
|
553 |
if (flush_left) |
|
|
554 |
while (f_width-- > 0) |
|
|
555 |
rprintfChar(' '); |
|
|
556 |
break; |
|
|
557 |
case '%': // '%' character |
|
|
558 |
rprintfChar('%'); |
|
|
559 |
break; |
|
|
560 |
} |
|
|
561 |
flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
|
|
562 |
sign = 0; |
|
|
563 |
pad = ' '; |
|
|
564 |
} |
|
|
565 |
} |
|
|
566 |
|
|
|
567 |
va_end(ap); |
|
|
568 |
return 0; |
|
|
569 |
} |
|
|
570 |
|
|
|
571 |
unsigned char Isdigit(char c) |
|
|
572 |
{ |
|
|
573 |
if((c >= 0x30) && (c <= 0x39)) |
|
|
574 |
return TRUE; |
|
|
575 |
else |
|
|
576 |
return FALSE; |
|
|
577 |
} |
|
|
578 |
|
|
|
579 |
int atoiRamRom(unsigned char stringInRom, char *str) |
|
|
580 |
{ |
|
|
581 |
int num = 0;; |
|
|
582 |
|
|
|
583 |
while(Isdigit(READMEMBYTE(stringInRom,str))) |
|
|
584 |
{ |
|
|
585 |
num *= 10; |
|
|
586 |
num += ((READMEMBYTE(stringInRom,str++)) - 0x30); |
|
|
587 |
} |
|
|
588 |
return num; |
|
|
589 |
} |
|
|
590 |
|
|
|
591 |
#endif |
|
|
592 |
|
|
|
593 |
//****************************************************************************** |
|
|
594 |
// code below this line is commented out and can be ignored |
|
|
595 |
//****************************************************************************** |
|
|
596 |
/* |
|
|
597 |
char* sprintf(const char *sfmt, ...) |
|
|
598 |
{ |
|
|
599 |
register unsigned char *f, *bp, *str; |
|
|
600 |
register long l; |
|
|
601 |
register unsigned long u; |
|
|
602 |
register int i; |
|
|
603 |
register int fmt; |
|
|
604 |
register unsigned char pad = ' '; |
|
|
605 |
int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
|
|
606 |
int sign = 0; |
|
|
607 |
|
|
|
608 |
va_list ap; |
|
|
609 |
va_start(ap, sfmt); |
|
|
610 |
|
|
|
611 |
str = bufstring; |
|
|
612 |
f = (unsigned char *) sfmt; |
|
|
613 |
|
|
|
614 |
for (; *f; f++) |
|
|
615 |
{ |
|
|
616 |
if (*f != '%') |
|
|
617 |
{ // not a format character |
|
|
618 |
*str++ = (*f); // then just output the char |
|
|
619 |
} |
|
|
620 |
else |
|
|
621 |
{ |
|
|
622 |
f++; // if we have a "%" then skip it |
|
|
623 |
if (*f == '-') |
|
|
624 |
{ |
|
|
625 |
flush_left = 1; // minus: flush left |
|
|
626 |
f++; |
|
|
627 |
} |
|
|
628 |
if (*f == '0' || *f == '.') |
|
|
629 |
{ |
|
|
630 |
// padding with 0 rather than blank |
|
|
631 |
pad = '0'; |
|
|
632 |
f++; |
|
|
633 |
} |
|
|
634 |
if (*f == '*') |
|
|
635 |
{ // field width |
|
|
636 |
f_width = va_arg(ap, int); |
|
|
637 |
f++; |
|
|
638 |
} |
|
|
639 |
else if (Isdigit(*f)) |
|
|
640 |
{ |
|
|
641 |
f_width = atoi((char *) f); |
|
|
642 |
while (Isdigit(*f)) |
|
|
643 |
f++; // skip the digits |
|
|
644 |
} |
|
|
645 |
if (*f == '.') |
|
|
646 |
{ // precision |
|
|
647 |
f++; |
|
|
648 |
if (*f == '*') |
|
|
649 |
{ |
|
|
650 |
prec = va_arg(ap, int); |
|
|
651 |
f++; |
|
|
652 |
} |
|
|
653 |
else if (Isdigit(*f)) |
|
|
654 |
{ |
|
|
655 |
prec = atoi((char *) f); |
|
|
656 |
while (Isdigit(*f)) |
|
|
657 |
f++; // skip the digits |
|
|
658 |
} |
|
|
659 |
} |
|
|
660 |
if (*f == '#') |
|
|
661 |
{ // alternate form |
|
|
662 |
hash = 1; |
|
|
663 |
f++; |
|
|
664 |
} |
|
|
665 |
if (*f == 'l') |
|
|
666 |
{ // long format |
|
|
667 |
do_long = 1; |
|
|
668 |
f++; |
|
|
669 |
} |
|
|
670 |
|
|
|
671 |
fmt = *f; |
|
|
672 |
bp = buf; |
|
|
673 |
switch (fmt) { // do the formatting |
|
|
674 |
case 'd': // 'd' signed decimal |
|
|
675 |
if (do_long) |
|
|
676 |
l = va_arg(ap, long); |
|
|
677 |
else |
|
|
678 |
l = (long) (va_arg(ap, int)); |
|
|
679 |
if (l < 0) |
|
|
680 |
{ |
|
|
681 |
sign = 1; |
|
|
682 |
l = -l; |
|
|
683 |
} |
|
|
684 |
do { |
|
|
685 |
*bp++ = l % 10 + '0'; |
|
|
686 |
} while ((l /= 10) > 0); |
|
|
687 |
if (sign) |
|
|
688 |
*bp++ = '-'; |
|
|
689 |
f_width = f_width - (bp - buf); |
|
|
690 |
if (!flush_left) |
|
|
691 |
while (f_width-- > 0) |
|
|
692 |
*str++ = (pad); |
|
|
693 |
for (bp--; bp >= buf; bp--) |
|
|
694 |
*str++ = (*bp); |
|
|
695 |
if (flush_left) |
|
|
696 |
while (f_width-- > 0) |
|
|
697 |
*str++ = (' '); |
|
|
698 |
break; |
|
|
699 |
case 'o': // 'o' octal number |
|
|
700 |
case 'x': // 'x' hex number |
|
|
701 |
case 'u': // 'u' unsigned decimal |
|
|
702 |
if (do_long) |
|
|
703 |
u = va_arg(ap, unsigned long); |
|
|
704 |
else |
|
|
705 |
u = (unsigned long) (va_arg(ap, unsigned)); |
|
|
706 |
if (fmt == 'u') |
|
|
707 |
{ // unsigned decimal |
|
|
708 |
do { |
|
|
709 |
*bp++ = u % 10 + '0'; |
|
|
710 |
} while ((u /= 10) > 0); |
|
|
711 |
} |
|
|
712 |
else if (fmt == 'o') |
|
|
713 |
{ // octal |
|
|
714 |
do { |
|
|
715 |
*bp++ = u % 8 + '0'; |
|
|
716 |
} while ((u /= 8) > 0); |
|
|
717 |
if (hash) |
|
|
718 |
*bp++ = '0'; |
|
|
719 |
} |
|
|
720 |
else if (fmt == 'x') |
|
|
721 |
{ // hex |
|
|
722 |
do { |
|
|
723 |
i = u % 16; |
|
|
724 |
if (i < 10) |
|
|
725 |
*bp++ = i + '0'; |
|
|
726 |
else |
|
|
727 |
*bp++ = i - 10 + 'a'; |
|
|
728 |
} while ((u /= 16) > 0); |
|
|
729 |
if (hash) |
|
|
730 |
{ |
|
|
731 |
*bp++ = 'x'; |
|
|
732 |
*bp++ = '0'; |
|
|
733 |
} |
|
|
734 |
} |
|
|
735 |
i = f_width - (bp - buf); |
|
|
736 |
if (!flush_left) |
|
|
737 |
while (i-- > 0) |
|
|
738 |
*str++ = (pad); |
|
|
739 |
for (bp--; bp >= buf; bp--) |
|
|
740 |
*str++ = ((int) (*bp)); |
|
|
741 |
if (flush_left) |
|
|
742 |
while (i-- > 0) |
|
|
743 |
*str++ = (' '); |
|
|
744 |
break; |
|
|
745 |
case 'c': // 'c' character |
|
|
746 |
i = va_arg(ap, int); |
|
|
747 |
*str++ = ((int) (i)); |
|
|
748 |
break; |
|
|
749 |
case 's': // 's' string |
|
|
750 |
bp = va_arg(ap, unsigned char *); |
|
|
751 |
if (!bp) |
|
|
752 |
bp = (unsigned char *) "(nil)"; |
|
|
753 |
f_width = f_width - strlen((char *) bp); |
|
|
754 |
if (!flush_left) |
|
|
755 |
while (f_width-- > 0) |
|
|
756 |
*str++ = (pad); |
|
|
757 |
for (i = 0; *bp && i < prec; i++) |
|
|
758 |
{ |
|
|
759 |
*str++ = (*bp); |
|
|
760 |
bp++; |
|
|
761 |
} |
|
|
762 |
if (flush_left) |
|
|
763 |
while (f_width-- > 0) |
|
|
764 |
*str++ = (' '); |
|
|
765 |
break; |
|
|
766 |
case '%': // '%' character |
|
|
767 |
*str++ = ('%'); |
|
|
768 |
break; |
|
|
769 |
} |
|
|
770 |
flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
|
|
771 |
sign = 0; |
|
|
772 |
pad = ' '; |
|
|
773 |
} |
|
|
774 |
} |
|
|
775 |
|
|
|
776 |
va_end(ap); |
|
|
777 |
// terminate string with null |
|
|
778 |
*str++ = '\0'; |
|
|
779 |
return bufstring; |
|
|
780 |
} |
|
|
781 |
|
|
|
782 |
*/ |