diff options
Diffstat (limited to 'apps/gps/nmealib/tok.c')
| -rw-r--r-- | apps/gps/nmealib/tok.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/apps/gps/nmealib/tok.c b/apps/gps/nmealib/tok.c deleted file mode 100644 index c7cf2f4dc..000000000 --- a/apps/gps/nmealib/tok.c +++ /dev/null @@ -1,267 +0,0 @@ -/* - * - * NMEA library - * URL: http://nmea.sourceforge.net - * Author: Tim (xtimor@gmail.com) - * Licence: http://www.gnu.org/licenses/lgpl.html - * $Id: tok.c 17 2008-03-11 11:56:11Z xtimor $ - * - */ - -/*! \file tok.h */ - -#include "nmea/tok.h" - -#include <stdarg.h> -#include <stdlib.h> -#include <stdio.h> -#include <ctype.h> -#include <string.h> -#include <limits.h> - -#define NMEA_TOKS_COMPARE (1) -#define NMEA_TOKS_PERCENT (2) -#define NMEA_TOKS_WIDTH (3) -#define NMEA_TOKS_TYPE (4) - -//memchr replacement -void * -memchr(s, c, n) - const void *s; - unsigned char c; - size_t n; -{ - if (n != 0) { - const unsigned char *p = s; - - do { - if (*p++ == c) - return ((void *)(p - 1)); - } while (--n != 0); - } - return (NULL); -} - - -/** - * \brief Calculate control sum of binary buffer - */ -int nmea_calc_crc(const char *buff, int buff_sz) -{ - int chsum = 0, - it; - - for(it = 0; it < buff_sz; ++it) - chsum ^= (int)buff[it]; - - return chsum; -} - -/** - * \brief Convert string to number - */ -int nmea_atoi(const char *str, int str_sz, int radix) -{ - char *tmp_ptr; - char buff[NMEA_CONVSTR_BUF]; - int res = 0; - - if(str_sz < NMEA_CONVSTR_BUF) - { - memcpy(&buff[0], str, str_sz); - buff[str_sz] = '\0'; - res = strtol(&buff[0], &tmp_ptr, radix); - } - return res; -} - -/** - * \brief Convert string to fraction number - */ -float nmea_atof(const char *str, int str_sz) -{ - char *tmp_ptr; - char buff[NMEA_CONVSTR_BUF]; - float res = 0; - - if(str_sz < NMEA_CONVSTR_BUF) - { - memcpy(&buff[0], str, str_sz); - buff[str_sz] = '\0'; - res = (float)strtod(&buff[0], &tmp_ptr); - } - return res; -} - -/** - * \brief Formating string (like standart printf) with CRC tail (*CRC) - */ -int nmea_printf(char *buff, int buff_sz, const char *format, ...) -{ - int retval, add = 0; - va_list arg_ptr; - - if(buff_sz <= 0) - return 0; - - va_start(arg_ptr, format); - - retval = NMEA_POSIX(vsnprintf)(buff, buff_sz, format, arg_ptr); - - if(retval > 0) - { - add = NMEA_POSIX(snprintf)( - buff + retval, buff_sz - retval, "*%02x\r\n", - nmea_calc_crc(buff + 1, retval - 1)); - } - - retval += add; - - if(retval < 0 || retval > buff_sz) - { - memset(buff, ' ', buff_sz); - retval = buff_sz; - } - - va_end(arg_ptr); - - return retval; -} - -/** - * \brief Analyse string (specificate for NMEA sentences) - */ -int nmea_scanf(const char *buff, int buff_sz, const char *format, ...) -{ - const char *beg_tok; - const char *end_buf = buff + buff_sz; - - va_list arg_ptr; - int tok_type = NMEA_TOKS_COMPARE; - int width = 0; - const char *beg_fmt = 0; - int snum = 0, unum = 0; - - int tok_count = 0; - void *parg_target; - - va_start(arg_ptr, format); - - for(; *format && buff < end_buf; ++format) - { - switch(tok_type) - { - case NMEA_TOKS_COMPARE: - if('%' == *format) - tok_type = NMEA_TOKS_PERCENT; - else if(*buff++ != *format) - goto fail; - break; - case NMEA_TOKS_PERCENT: - width = 0; - beg_fmt = format; - tok_type = NMEA_TOKS_WIDTH; - case NMEA_TOKS_WIDTH: - if(isdigit(*format)) - break; - { - tok_type = NMEA_TOKS_TYPE; - if(format > beg_fmt) - width = nmea_atoi(beg_fmt, (int)(format - beg_fmt), 10); - } - case NMEA_TOKS_TYPE: - beg_tok = buff; - - if(!width && ('c' == *format || 'C' == *format) && *buff != format[1]) - width = 1; - - if(width) - { - if(buff + width <= end_buf) - buff += width; - else - goto fail; - } - else - { - if(!format[1] || (0 == (buff = (char *)memchr(buff, format[1], end_buf - buff)))) - buff = end_buf; - } - - if(buff > end_buf) - goto fail; - - tok_type = NMEA_TOKS_COMPARE; - tok_count++; - - parg_target = 0; width = (int)(buff - beg_tok); - - switch(*format) - { - case 'c': - case 'C': - parg_target = (void *)va_arg(arg_ptr, char *); - if(width && 0 != (parg_target)) - *((char *)parg_target) = *beg_tok; - break; - case 's': - case 'S': - parg_target = (void *)va_arg(arg_ptr, char *); - if(width && 0 != (parg_target)) - { - memcpy(parg_target, beg_tok, width); - ((char *)parg_target)[width] = '\0'; - } - break; - case 'f': - case 'g': - case 'G': - case 'e': - case 'E': - parg_target = (void *)va_arg(arg_ptr, float *); - if(width && 0 != (parg_target)) - *((float *)parg_target) = nmea_atof(beg_tok, width); - break; - }; - - if(parg_target) - break; - if(0 == (parg_target = (void *)va_arg(arg_ptr, int *))) - break; - if(!width) - break; - - switch(*format) - { - case 'd': - case 'i': - snum = nmea_atoi(beg_tok, width, 10); - memcpy(parg_target, &snum, sizeof(int)); - break; - case 'u': - unum = nmea_atoi(beg_tok, width, 10); - memcpy(parg_target, &unum, sizeof(unsigned int)); - break; - case 'x': - case 'X': - unum = nmea_atoi(beg_tok, width, 16); - memcpy(parg_target, &unum, sizeof(unsigned int)); - break; - case 'o': - unum = nmea_atoi(beg_tok, width, 8); - memcpy(parg_target, &unum, sizeof(unsigned int)); - break; - default: - goto fail; - }; - - break; - }; - } - -fail: - - va_end(arg_ptr); - - return tok_count; -} |