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