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tr: support -C as synonym to -c

This commit is contained in:
Denis Vlasenko 2009-03-15 16:41:55 +00:00
parent fc58ba1298
commit 9210a36495
1 changed files with 21 additions and 8 deletions
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29
coreutils/tr.c
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@ -49,6 +49,14 @@ static void map(char *pvector,
* Escapes, e.g., \a ==> Control-G
* Character classes, e.g. [:upper:] ==> A...Z
* Equiv classess, e.g. [=A=] ==> A (hmmmmmmm?)
* not supported:
* \ooo-\ooo - octal ranges
* [x*N] - repeat char x N times
* [x*] - repeat char x until it fills STRING2:
* # echo qwe123 | /usr/bin/tr 123456789 '[d]'
* qwe[d]
* # echo qwe123 | /usr/bin/tr 123456789 '[d*]'
* qweddd
*/
static unsigned expand(const char *arg, char **buffer_p)
{
@ -208,7 +216,7 @@ int tr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int tr_main(int argc UNUSED_PARAM, char **argv)
{
int i;
smalluint flags;
smalluint opts;
ssize_t read_chars;
size_t in_index, out_index;
unsigned last = UCHAR_MAX + 1; /* not equal to any char */
@ -221,22 +229,27 @@ int tr_main(int argc UNUSED_PARAM, char **argv)
char *invec = vector + ASCII;
char *outvec = vector + ASCII * 2;
#define TR_OPT_complement (1 << 0)
#define TR_OPT_delete (1 << 1)
#define TR_OPT_squeeze_reps (1 << 2)
#define TR_OPT_complement (3 << 0)
#define TR_OPT_delete (1 << 2)
#define TR_OPT_squeeze_reps (1 << 3)
for (i = 0; i < ASCII; i++) {
vector[i] = i;
/*invec[i] = outvec[i] = FALSE; - done by xzalloc */
}
/* -C/-c difference is that -C complements "characters",
* and -c complements "values" (binary bytes I guess).
* In POSIX locale, these are the same.
*/
opt_complementary = "-1";
flags = getopt32(argv, "+cds"); /* '+': stop at first non-option */
opts = getopt32(argv, "+Ccds"); /* '+': stop at first non-option */
argv += optind;
str1_length = expand(*argv++, &str1);
str2_length = 0;
if (flags & TR_OPT_complement)
if (opts & TR_OPT_complement)
str1_length = complement(str1, str1_length);
if (*argv) {
if (argv[0][0] == '\0')
@ -271,10 +284,10 @@ int tr_main(int argc UNUSED_PARAM, char **argv)
in_index = 0;
}
c = str1[in_index++];
if ((flags & TR_OPT_delete) && invec[c])
if ((opts & TR_OPT_delete) && invec[c])
continue;
coded = vector[c];
if ((flags & TR_OPT_squeeze_reps) && last == coded
if ((opts & TR_OPT_squeeze_reps) && last == coded
&& (invec[c] || outvec[coded])
) {
continue;