#define bb_need_write_error
#include "messages.c"
-const char *tr_usage="tr [-cds] STRING1 [STRING2]\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nTranslate, squeeze, and/or delete characters from\n"
- "standard input, writing to standard output.\n\n"
- "Options:\n"
- "\t-c\ttake complement of STRING1\n"
- "\t-d\tdelete input characters coded STRING1\n"
- "\t-s\tsqueeze multiple output characters of STRING2 into one character\n"
-#endif
-;
-
-
-
#ifdef TRUE
#undef TRUE
#undef FALSE
/* NOTREACHED */
}
-static void map(register unsigned char *string1, register unsigned char *string2)
+static void map(register unsigned char *string1, unsigned int string1_len,
+ register unsigned char *string2, unsigned int string2_len)
{
unsigned char last = '0';
+ unsigned int i, j;
- while (*string1) {
- if (*string2 == '\0')
- vector[*string1] = last;
+ for (j = 0, i = 0; i < string1_len; i++) {
+ if (string2_len <= j)
+ vector[string1[i]] = last;
else
- vector[*string1] = last = *string2++;
- string1++;
+ vector[string1[i]] = last = string2[j++];
}
}
-static void expand(char *arg, register unsigned char *buffer)
+static unsigned int expand(char *arg, register unsigned char *buffer)
{
+ unsigned char *buffer_start = buffer;
int i, ac;
while (*arg) {
} else
*buffer++ = *arg++;
}
+
+ return (buffer - buffer_start);
}
-static void complement(unsigned char *buffer)
+static int complement(unsigned char *buffer, int buffer_len)
{
- register unsigned char *ptr;
- register short i, index;
- unsigned char conv[ASCII + 2];
+ register short i, j, index;
+ char conv[ASCII + 2];
index = 0;
- for (i = 1; i <= ASCII; i++) {
- for (ptr = buffer; *ptr; ptr++)
- if (*ptr == i)
+ for (i = 0; i <= ASCII; i++) {
+ for (j = 0; j < buffer_len; j++)
+ if (buffer[j] == i)
break;
- if (*ptr == '\0')
+ if (j == buffer_len)
conv[index++] = i & ASCII;
}
- conv[index] = '\0';
- strcpy((char *) buffer, (char *) conv);
+ memcpy(buffer, conv, index);
+ return index;
}
extern int tr_main(int argc, char **argv)
{
register unsigned char *ptr;
+ int output_length=0, input_length;
int index = 1;
- short i;
+ int i;
if (argc > 1 && argv[index][0] == '-') {
for (ptr = (unsigned char *) &argv[index][1]; *ptr; ptr++) {
}
if (argv[index] != NULL) {
- expand(argv[index++], input);
+ input_length = expand(argv[index++], input);
if (com_fl)
- complement(input);
- if (argv[index] != NULL)
- expand(argv[index], output);
- if (argv[index] != NULL)
- map(input, output);
- for (ptr = input; *ptr; ptr++)
- invec[*ptr] = TRUE;
- for (ptr = output; *ptr; ptr++)
- outvec[*ptr] = TRUE;
+ input_length = complement(input, input_length);
+ if (argv[index] != NULL) {
+ if (*argv[index] == '\0')
+ fatalError("STRING2 cannot be empty\n");
+ output_length = expand(argv[index], output);
+ map(input, input_length, output, output_length);
+ }
+ for (i = 0; i < input_length; i++)
+ invec[input[i]] = TRUE;
+ for (i = 0; i < output_length; i++)
+ outvec[output[i]] = TRUE;
}
convert();
return (0);