code.c

   1 #include <stddef.h>
   2 #include <stdio.h>
   3
   4 #include "debug.h"
   5 #include "fprintf.h"
   6
   7 #include "code.h"
   8
   9 /* concatenate code */
  10
  11 int codcat (char *dst, size_t n, char *src)
  12 {
  13     while ((*dst != 0) && (n > 0)) {
  14         n--;
  15         dst++;
  16     }
  17
  18     return (n > 0) ? codcpy (dst, n, src) : -1;
  19 }
  20
  21 /* compare 2 codes */
  22
  23 int codcmp (char *cod1, char *cod2)
  24 {
  25     int i = -1;
  26
  27     do {
  28         i++;
  29         if (cod1[i] != cod2[i]) {
  30             return (cod1[i] < cod2[i]) ? -1 : 1;
  31         }
  32     } while (cod1[i] != 0);
  33
  34     return 0;
  35 }
  36
  37 /* copy code */
  38
  39 int codcpy (char *dst, size_t n, char *src)
  40 {
  41     size_t i;
  42
  43     for (i = 0; i < n; i++) {
  44         dst[i] = src[i];
  45         if (src[i]== 0) {
  46             return i;
  47         }
  48     }
  49     VERBOSE (ERROR, _fprintf (stdout, "Buffer too short\n"));
  50
  51     return -1;
  52 }
  53
  54 /* code length */
  55
  56 int codlen (char *code)
  57 {
  58     int i = 0;
  59
  60     while (code[i] != 0) {
  61         i++;
  62     }
  63
  64     return i;
  65 }
  66
  67 /* vim: set ts=4 sw=4 et */