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dos2unix conversion

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This commit is contained in:
nifi 2011-01-07 11:55:36 +00:00
parent eb24078ffb
commit f3d22e6287
2 changed files with 339 additions and 339 deletions
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352
apps/ping6/ping6.c
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@ -1,176 +1,176 @@
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "mac.h"
#include <string.h>
#include <stdio.h>
#define MACDEBUG 0
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#endif
#define PING6_NB 5
#define PING6_DATALEN 16
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
static struct etimer ping6_periodic_timer;
static u8_t count = 0;
static char command[20];
static u16_t addr[8];
uip_ipaddr_t dest_addr;
PROCESS(ping6_process, "PING6 process");
AUTOSTART_PROCESSES(&ping6_process);
/*---------------------------------------------------------------------------*/
static u8_t
ping6handler(process_event_t ev, process_data_t data)
{
if(count == 0){
#if MACDEBUG
// Setup destination address.
addr[0] = 0xFE80;
addr[4] = 0x6466;
addr[5] = 0x6666;
addr[6] = 0x6666;
addr[7] = 0x6666;
uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
addr[3],addr[4],addr[5],addr[6],addr[7]);
// Set the command to fool the 'if' below.
memcpy(command, (void *)"ping6", 5);
#else
/* prompt */
printf("> ");
/** \note the scanf here is blocking (the all stack is blocked waiting
* for user input). This is far from ideal and could be improved
*/
scanf("%s", command);
if(strcmp(command,"ping6") != 0){
PRINTF("> invalid command\n");
return 0;
}
if(scanf(" %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
&addr[0],&addr[1],&addr[2],&addr[3],
&addr[4],&addr[5],&addr[6],&addr[7]) == 8){
uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
addr[3],addr[4],addr[5],addr[6],addr[7]);
} else {
PRINTF("> invalid ipv6 address format\n");
return 0;
}
#endif
}
if((strcmp(command,"ping6") == 0) && (count < PING6_NB)){
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
UIP_ICMP_BUF->icode = 0;
/* set identifier and sequence number to 0 */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
/* put one byte of data */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
count, PING6_DATALEN);
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (u8_t)((uip_len - 40) & 0x00FF);
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
PRINTF("Sending Echo Request to");
PRINT6ADDR(&UIP_IP_BUF->destipaddr);
PRINTF("from");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("\n");
UIP_STAT(++uip_stat.icmp.sent);
tcpip_ipv6_output();
count++;
etimer_set(&ping6_periodic_timer, 3 * CLOCK_SECOND);
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(ping6_process, ev, data)
{
u8_t cont = 1;
PROCESS_BEGIN();
PRINTF("In Process PING6\n");
PRINTF("Wait for DAD\n");
etimer_set(&ping6_periodic_timer, 15*CLOCK_SECOND);
while(cont) {
PROCESS_YIELD();
cont = ping6handler(ev, data);
}
PRINTF("END PING6\n");
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "mac.h"
#include <string.h>
#include <stdio.h>
#define MACDEBUG 0
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#endif
#define PING6_NB 5
#define PING6_DATALEN 16
#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
static struct etimer ping6_periodic_timer;
static u8_t count = 0;
static char command[20];
static u16_t addr[8];
uip_ipaddr_t dest_addr;
PROCESS(ping6_process, "PING6 process");
AUTOSTART_PROCESSES(&ping6_process);
/*---------------------------------------------------------------------------*/
static u8_t
ping6handler(process_event_t ev, process_data_t data)
{
if(count == 0){
#if MACDEBUG
// Setup destination address.
addr[0] = 0xFE80;
addr[4] = 0x6466;
addr[5] = 0x6666;
addr[6] = 0x6666;
addr[7] = 0x6666;
uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
addr[3],addr[4],addr[5],addr[6],addr[7]);
// Set the command to fool the 'if' below.
memcpy(command, (void *)"ping6", 5);
#else
/* prompt */
printf("> ");
/** \note the scanf here is blocking (the all stack is blocked waiting
* for user input). This is far from ideal and could be improved
*/
scanf("%s", command);
if(strcmp(command,"ping6") != 0){
PRINTF("> invalid command\n");
return 0;
}
if(scanf(" %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
&addr[0],&addr[1],&addr[2],&addr[3],
&addr[4],&addr[5],&addr[6],&addr[7]) == 8){
uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
addr[3],addr[4],addr[5],addr[6],addr[7]);
} else {
PRINTF("> invalid ipv6 address format\n");
return 0;
}
#endif
}
if((strcmp(command,"ping6") == 0) && (count < PING6_NB)){
UIP_IP_BUF->vtc = 0x60;
UIP_IP_BUF->tcflow = 1;
UIP_IP_BUF->flow = 0;
UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
UIP_ICMP_BUF->icode = 0;
/* set identifier and sequence number to 0 */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
/* put one byte of data */
memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
count, PING6_DATALEN);
uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
UIP_IP_BUF->len[1] = (u8_t)((uip_len - 40) & 0x00FF);
UIP_ICMP_BUF->icmpchksum = 0;
UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
PRINTF("Sending Echo Request to");
PRINT6ADDR(&UIP_IP_BUF->destipaddr);
PRINTF("from");
PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
PRINTF("\n");
UIP_STAT(++uip_stat.icmp.sent);
tcpip_ipv6_output();
count++;
etimer_set(&ping6_periodic_timer, 3 * CLOCK_SECOND);
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(ping6_process, ev, data)
{
u8_t cont = 1;
PROCESS_BEGIN();
PRINTF("In Process PING6\n");
PRINTF("Wait for DAD\n");
etimer_set(&ping6_periodic_timer, 15*CLOCK_SECOND);
while(cont) {
PROCESS_YIELD();
cont = ping6handler(ev, data);
}
PRINTF("END PING6\n");
PROCESS_END();
}
/*---------------------------------------------------------------------------*/

326
core/lib/gcr.c
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@ -1,163 +1,163 @@
/*
* Copyright (c) 2006, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: gcr.c,v 1.1 2006/10/05 09:23:41 adamdunkels Exp $
*/
/**
* \file
* Implementation of GCR coding/decoding
* \author
* Joakim Eriksson <joakime@sics.se>
*
*/
/* GCR conversion table - used for converting ordinary byte to 10-bits */
/* (or 4 bits to 5) */
static const unsigned char GCR_encode[16] = {
0x0a, 0x0b, 0x12, 0x13,
0x0e, 0x0f, 0x16, 0x17,
0x09, 0x19, 0x1a, 0x1b,
0x0d, 0x1d, 0x1e, 0x15
};
/* 5 bits > 4 bits (0xff => invalid) */
static const unsigned char GCR_decode[32] = {
0xff, 0xff, 0xff, 0xff, // 0 - 3invalid...
0xff, 0xff, 0xff, 0xff, // 4 - 7 invalid...
0xff, 0x08, 0x00, 0x01, // 8 invalid... 9 = 8, a = 0, b = 1
0xff, 0x0c, 0x04, 0x05, // c invalid... d = c, e = 4, f = 5
0xff, 0xff, 0x02, 0x03, // 10-11 invalid...
0xff, 0x0f, 0x06, 0x07, // 14 invalid...
0xff, 0x09, 0x0a, 0x0b, // 18 invalid...
0xff, 0x0d, 0x0e, 0xff, // 1c, 1f invalid...
};
static unsigned char gcr_bits = 0;
static unsigned short gcr_val = 0;
/* Call before starting encoding or decoding */
void gcr_init() {
gcr_val = 0;
gcr_bits = 0;
}
/* Use this to check if encoding / decoding is complete for now */
unsigned char gcr_finished() {
return gcr_bits == 0;
}
/* Encode one character - and store in bits - get encoded with get_encoded */
void gcr_encode(unsigned char raw_data) {
gcr_val |=
((GCR_encode[raw_data >> 4u] << 5u ) |
GCR_encode[raw_data & 0xf]) << gcr_bits;
gcr_bits += 10;
}
/* Gets the current char of the encoded stream */
unsigned char gcr_get_encoded(unsigned char *raw_data) {
if (gcr_bits >= 8) {
*raw_data = (unsigned char) (gcr_val & 0xff);
gcr_val = gcr_val >> 8u;
gcr_bits = gcr_bits - 8;
return 1;
}
return 0;
}
/* Decode one char - result can be get from get_decoded */
void gcr_decode(unsigned char gcr_data) {
gcr_val |= gcr_data << gcr_bits;
gcr_bits += 8;
}
/* check if the current decoded stream is correct */
unsigned char gcr_valid() {
if (gcr_bits >= 10) {
unsigned short val = gcr_val & 0x3ff;
if ((GCR_decode[val >> 5u] << 4u) == 0xff ||
(GCR_decode[val & 0x1f]) == 0xff) {
return 0;
}
}
return 1;
}
/* gets the decoded stream - if any char is available */
unsigned char gcr_get_decoded(unsigned char *raw_data) {
if (gcr_bits >= 10) {
unsigned short val = gcr_val & 0x3ff;
*raw_data = (unsigned char) ((GCR_decode[val >> 5] << 4) |
(GCR_decode[val & 0x1f]));
gcr_val = gcr_val >> 10;
gcr_bits = gcr_bits - 10;
return 1;
}
return 0;
}
/*
static const char encoded[] = {
0x4a, 0x25, 0xa5, 0xfc, 0x96, 0xff, 0xff, 0xb5, 0xd4, 0x5a, 0xea, 0xff, 0xff, 0xaa, 0xd3, 0xff
};
int main(int argc, char **argv) {
// unsigned char c[] = "testing gcr 1 2 3 4 5 6...";
unsigned char c[] = { 0, 8, 0xe0, 0x2b, 0xac, 0x10, 0x01, 0x11, 0x50, 0xff, 0xf4, 0xa4, 0x00 };
unsigned char c2[200];
int pos = 0, pos2 = 0, i = 0;
printf("Testing GCR on: %s \n", c);
gcr_init();
for (i = 0; i < sizeof(c); i++) {
gcr_encode(c[i]);
while(gcr_get_encoded(&c2[pos])) {
printf("%02x=>%02x ", c[i], c2[pos]);
pos++;
}
}
printf("\n");
printf("Encoded result %d chars (from %d) \n", pos, i);
gcr_init();
for (i = 0; i < pos; i++) {
gcr_decode(c2[i]);
if(!gcr_valid()) {
printf("GCR: not valid\n");
}
while(gcr_get_decoded(&c[pos2])) {
pos2++;
}
}
printf("GCR: %s\n",c);
}
*/
/*
* Copyright (c) 2006, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: gcr.c,v 1.2 2011/01/07 11:55:36 nifi Exp $
*/
/**
* \file
* Implementation of GCR coding/decoding
* \author
* Joakim Eriksson <joakime@sics.se>
*
*/
/* GCR conversion table - used for converting ordinary byte to 10-bits */
/* (or 4 bits to 5) */
static const unsigned char GCR_encode[16] = {
0x0a, 0x0b, 0x12, 0x13,
0x0e, 0x0f, 0x16, 0x17,
0x09, 0x19, 0x1a, 0x1b,
0x0d, 0x1d, 0x1e, 0x15
};
/* 5 bits > 4 bits (0xff => invalid) */
static const unsigned char GCR_decode[32] = {
0xff, 0xff, 0xff, 0xff, // 0 - 3invalid...
0xff, 0xff, 0xff, 0xff, // 4 - 7 invalid...
0xff, 0x08, 0x00, 0x01, // 8 invalid... 9 = 8, a = 0, b = 1
0xff, 0x0c, 0x04, 0x05, // c invalid... d = c, e = 4, f = 5
0xff, 0xff, 0x02, 0x03, // 10-11 invalid...
0xff, 0x0f, 0x06, 0x07, // 14 invalid...
0xff, 0x09, 0x0a, 0x0b, // 18 invalid...
0xff, 0x0d, 0x0e, 0xff, // 1c, 1f invalid...
};
static unsigned char gcr_bits = 0;
static unsigned short gcr_val = 0;
/* Call before starting encoding or decoding */
void gcr_init() {
gcr_val = 0;
gcr_bits = 0;
}
/* Use this to check if encoding / decoding is complete for now */
unsigned char gcr_finished() {
return gcr_bits == 0;
}
/* Encode one character - and store in bits - get encoded with get_encoded */
void gcr_encode(unsigned char raw_data) {
gcr_val |=
((GCR_encode[raw_data >> 4u] << 5u ) |
GCR_encode[raw_data & 0xf]) << gcr_bits;
gcr_bits += 10;
}
/* Gets the current char of the encoded stream */
unsigned char gcr_get_encoded(unsigned char *raw_data) {
if (gcr_bits >= 8) {
*raw_data = (unsigned char) (gcr_val & 0xff);
gcr_val = gcr_val >> 8u;
gcr_bits = gcr_bits - 8;
return 1;
}
return 0;
}
/* Decode one char - result can be get from get_decoded */
void gcr_decode(unsigned char gcr_data) {
gcr_val |= gcr_data << gcr_bits;
gcr_bits += 8;
}
/* check if the current decoded stream is correct */
unsigned char gcr_valid() {
if (gcr_bits >= 10) {
unsigned short val = gcr_val & 0x3ff;
if ((GCR_decode[val >> 5u] << 4u) == 0xff ||
(GCR_decode[val & 0x1f]) == 0xff) {
return 0;
}
}
return 1;
}
/* gets the decoded stream - if any char is available */
unsigned char gcr_get_decoded(unsigned char *raw_data) {
if (gcr_bits >= 10) {
unsigned short val = gcr_val & 0x3ff;
*raw_data = (unsigned char) ((GCR_decode[val >> 5] << 4) |
(GCR_decode[val & 0x1f]));
gcr_val = gcr_val >> 10;
gcr_bits = gcr_bits - 10;
return 1;
}
return 0;
}
/*
static const char encoded[] = {
0x4a, 0x25, 0xa5, 0xfc, 0x96, 0xff, 0xff, 0xb5, 0xd4, 0x5a, 0xea, 0xff, 0xff, 0xaa, 0xd3, 0xff
};
int main(int argc, char **argv) {
// unsigned char c[] = "testing gcr 1 2 3 4 5 6...";
unsigned char c[] = { 0, 8, 0xe0, 0x2b, 0xac, 0x10, 0x01, 0x11, 0x50, 0xff, 0xf4, 0xa4, 0x00 };
unsigned char c2[200];
int pos = 0, pos2 = 0, i = 0;
printf("Testing GCR on: %s \n", c);
gcr_init();
for (i = 0; i < sizeof(c); i++) {
gcr_encode(c[i]);
while(gcr_get_encoded(&c2[pos])) {
printf("%02x=>%02x ", c[i], c2[pos]);
pos++;
}
}
printf("\n");
printf("Encoded result %d chars (from %d) \n", pos, i);
gcr_init();
for (i = 0; i < pos; i++) {
gcr_decode(c2[i]);
if(!gcr_valid()) {
printf("GCR: not valid\n");
}
while(gcr_get_decoded(&c[pos2])) {
pos2++;
}
}
printf("GCR: %s\n",c);
}
*/