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/*++
/* NAME
/* translit 3
/* SUMMARY
/* transliterate characters
/* SYNOPSIS
/* #include <stringops.h>
/*
/* char *translit(buf, original, replacement)
/* char *buf;
/* char *original;
/* char *replacement;
/* DESCRIPTION
/* translit() takes a null-terminated string, and replaces characters
/* given in its \fIoriginal\fR argument by the corresponding characters
/* in the \fIreplacement\fR string. The result value is the \fIbuf\fR
/* argument.
/* BUGS
/* Cannot replace null characters.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include "sys_defs.h"
#include <string.h>
/* Utility library. */
#include "stringops.h"
char *translit(char *string, const char *original, const char *replacement)
{
char *cp;
const char *op;
/*
* For large inputs, should use a lookup table.
*/
for (cp = string; *cp != 0; cp++) {
for (op = original; *op != 0; op++) {
if (*cp == *op) {
*cp = replacement[op - original];
break;
}
}
}
return (string);
}
#ifdef TEST
/*
* Usage: translit string1 string2
*
* test program to perform the most basic operation of the UNIX tr command.
*/
#include <msg.h>
#include <vstring.h>
#include <vstream.h>
#include <vstring_vstream.h>
#define STR vstring_str
int main(int argc, char **argv)
{
VSTRING *buf = vstring_alloc(100);
if (argc != 3)
msg_fatal("usage: %s string1 string2", argv[0]);
while (vstring_fgets(buf, VSTREAM_IN))
vstream_fputs(translit(STR(buf), argv[1], argv[2]), VSTREAM_OUT);
vstream_fflush(VSTREAM_OUT);
vstring_free(buf);
return (0);
}
#endif
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