strings-common.c

#include "main-header.h"
// #include "bare-metal.h"
#include <stdarg.h>
 
void bufToHex(char *target, const byte *source, int size) {
  int i;
 
  target[0] = 0;
  for (i = 0; i < size; i++) {
    snprintf(target + (i * 3), 20, "%x ", source[i]);
  }
}
int charToHex(char c) {
  if ((c >= '0') && (c <= '9')) {
    return c - '0';
  }
  if ((c >= 'a') && (c <= 'f')) {
    return c - 'a' + 10;
  }
  if ((c >= 'A') && (c <= 'F')) {
    return c - 'A' + 10;
  }
  return -1;
}
void ltoh(const long i, char *s) {
  int x;
  int y;
  int o;
 
  s[0] = 0;
  o = i;
  for (x = 7; x >= 0; x--) {
    y = o & 0xF;
    if (y < 10) {
      s[x] = '0' + y;
    } else {
      s[x] = 'A' + (y - 10);
    }
    o = o >> 4;
  }
  s[8] = 0;
}
 
// returns >0 if c1 starts with c2
int startsWith(const char *c1, const char *c2) {
  int i;
 
  if ((c1 == NULL) || (c2 == NULL)) {
    return 0;
  }
  if (strlen(c1) < strlen(c2)) {
    return 0;
  }
  for (i = 0; i < strlen(c2); i++) {
    if (c1[i] != c2[i]) {
      return 0;
    }
  }
  return 1;
}
 
 
void printHex(const char *prefix, const uint8_t *buf, const int size) {
  int MAX_PER_ROW = 30;
  int i;
  int pcr;
 
  printf("******* hexdump (%i bytes) **** \r\n", size);
  pcr = 0;
  for (i = 0; i < size; i++) {
    printf("%x ", buf[i]);
    pcr = 0;
    if ((i != (size - 1)) && ((i % MAX_PER_ROW) == (MAX_PER_ROW - 1))) {
      pcr = 1;
      printf("\r\n%s", prefix);
    }
  }
  if (!pcr) {
    printf("\n");
  }
  printf("******* end hexdump\r\n");
}