src/str_util.c

   1 /*
   2  * str.c
   3  *
   4  *  Created on: Feb 14, 2011
   5  *      Author: lamikr
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <errno.h>
  12 #include <stdbool.h>
  13
  14 #include <log.h>
  15
  16 char *get_as_hex_str(const char *byte_arr, int byte_count) {
  17         int     ii;
  18         char    *ret_val;
  19         char    item[5];
  20
  21         ret_val = NULL;
  22         if ((byte_arr != NULL) &&
  23             (byte_count > 0)) {
  24                 ret_val = malloc(5 * byte_count);
  25                 for (ii = 0; ii < byte_count; ii++) {
  26                         if (ii == 0) {
  27                                 snprintf(ret_val, 5, "0x%02x", byte_arr[ii]);
  28                         }
  29                         else {
  30                                 snprintf(item, 5, "0x%02x", byte_arr[ii]);
  31                                 strcat(ret_val, item);
  32                         }
  33                         if (ii < (byte_count - 1)) {
  34                                 strcat(ret_val, " ");
  35                         }
  36                 }
  37         }
  38         return ret_val;
  39 }
  40
  41 bool parse_long(const char *str, long *result) {
  42         int     new_result;
  43         char    *endptr;
  44         bool    ret_val;
  45
  46         ret_val         = false;
  47         errno           = 0;
  48         new_result      = strtol(str, &endptr, 10);
  49         if (errno != 0) {
  50                 log_error("invalid input %s, could not convert to integer.\n", str);
  51         }
  52         else {
  53                 if (endptr == str) {
  54                         log_error("invalid input %s, could not convert to integer.\n", str);
  55                 }
  56                 else {
  57                         *result = new_result;
  58                         ret_val = true;
  59                 }
  60         }
  61         return ret_val;
  62 }