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- fix bug where we did not reject invalid classes like '[[:alpha'

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- debloat while at it:
   text    data     bss     dec     hex filename
   1554       0      19    1573     625 tr.o.oorig
   1357       0      16    1373     55d tr.o
This commit is contained in:
Bernhard Reutner-Fischer
2007-03-30 14:43:27 +00:00
parent 52a9db6bb8
commit eceecea568
6 changed files with 115 additions and 88 deletions
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163
coreutils/tr.c
View File

@@ -15,64 +15,61 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* http://www.opengroup.org/onlinepubs/009695399/utilities/tr.html
* TODO: xdigit, graph, print
*/
#include "busybox.h"
// Even with -funsigned-char, gcc still complains about char as an array index.
#define GCC4_IS_STUPID int
#define ASCII 0377
#define TR_OPT_complement (1<<0)
#define TR_OPT_delete (1<<1)
#define TR_OPT_squeeze_reps (1<<2)
/* some "globals" shared across this file */
static char com_fl, del_fl, sq_fl;
/* these last are pointers to static buffers declared in tr_main */
static char *poutput, *pvector, *pinvec, *poutvec;
static void convert(void)
static void ATTRIBUTE_NORETURN convert(const smalluint flags)
{
int read_chars = 0, in_index = 0, out_index = 0, c, coded, last = -1;
size_t read_chars = 0, in_index = 0, out_index = 0, c, coded, last = -1;
for (;;) {
// If we're out of input, flush output and read more input.
/* If we're out of input, flush output and read more input. */
if (in_index == read_chars) {
if (out_index) {
if (write(1, (char *) poutput, out_index) != out_index)
bb_error_msg_and_die(bb_msg_write_error);
xwrite(STDOUT_FILENO, (char *)poutput, out_index);
out_index = 0;
}
if ((read_chars = read(0, bb_common_bufsiz1, BUFSIZ)) <= 0) {
if (write(1, (char *) poutput, out_index) != out_index)
bb_error_msg(bb_msg_write_error);
exit(0);
if ((read_chars = read(STDIN_FILENO, bb_common_bufsiz1, BUFSIZ)) <= 0) {
if (write(STDOUT_FILENO, (char *)poutput, out_index) != out_index)
bb_perror_msg(bb_msg_write_error);
exit(EXIT_SUCCESS);
}
in_index = 0;
}
c = bb_common_bufsiz1[in_index++];
coded = pvector[c];
if (del_fl && pinvec[c])
if ((flags & TR_OPT_delete) && pinvec[c])
continue;
if (sq_fl && last == coded && (pinvec[c] || poutvec[coded]))
if ((flags & TR_OPT_squeeze_reps) && last == coded &&
(pinvec[c] || poutvec[coded]))
continue;
poutput[out_index++] = last = coded;
}
/* NOTREACHED */
}
static void map(char *string1, unsigned int string1_len,
char *string2, unsigned int string2_len)
static void map(unsigned char *string1, unsigned int string1_len,
unsigned char *string2, unsigned int string2_len)
{
char last = '0';
unsigned int i, j;
for (j = 0, i = 0; i < string1_len; i++) {
if (string2_len <= j)
pvector[(GCC4_IS_STUPID)string1[i]] = last;
pvector[string1[i]] = last;
else
pvector[(GCC4_IS_STUPID)string1[i]] = last = string2[j++];
pvector[string1[i]] = last = string2[j++];
}
}
@@ -84,15 +81,35 @@ static void map(char *string1, unsigned int string1_len,
static unsigned int expand(const char *arg, char *buffer)
{
char *buffer_start = buffer;
int i, ac;
unsigned i; /* XXX: FIXME: use unsigned char? */
unsigned char ac;
#if ENABLE_FEATURE_TR_CLASSES
#define CLO ":]"
const char * const classes[] = {
"alpha"CLO, "alnum"CLO, "digit"CLO, "lower"CLO, "upper"CLO, "space"CLO,
"blank"CLO, "punct"CLO, "cntrl"CLO, NULL
};
#define CLASS_invalid 0 /* we increment the retval */
#define CLASS_alpha 1
#define CLASS_alnum 2
#define CLASS_digit 3
#define CLASS_lower 4
#define CLASS_upper 5
#define CLASS_space 6
#define CLASS_blank 7
#define CLASS_punct 8
#define CLASS_cntrl 9
//#define CLASS_xdigit 10
//#define CLASS_graph 11
//#define CLASS_print 12
#endif
while (*arg) {
if (*arg == '\\') {
arg++;
*buffer++ = bb_process_escape_sequence(&arg);
} else if (*(arg+1) == '-') {
ac = *(arg+2);
if(ac == 0) {
if (ac == 0) {
*buffer++ = *arg++;
continue;
}
@@ -104,50 +121,42 @@ static unsigned int expand(const char *arg, char *buffer)
arg++;
i = *arg++;
if (ENABLE_FEATURE_TR_CLASSES && i == ':') {
if (strncmp(arg, "alpha", 5) == 0) {
for (i = 'A'; i <= 'Z'; i++)
*buffer++ = i;
for (i = 'a'; i <= 'z'; i++)
*buffer++ = i;
smalluint j;
{ /* not really pretty.. */
char *tmp = xstrndup(arg, 7); // warning: xdigit needs 8, not 7
j = index_in_str_array(classes, tmp) + 1;
free(tmp);
}
else if (strncmp(arg, "alnum", 5) == 0) {
if (j == CLASS_alnum || j == CLASS_digit) {
for (i = '0'; i <= '9'; i++)
*buffer++ = i;
}
if (j == CLASS_alpha || j == CLASS_alnum || j == CLASS_upper) {
for (i = 'A'; i <= 'Z'; i++)
*buffer++ = i;
}
if (j == CLASS_alpha || j == CLASS_alnum || j == CLASS_lower) {
for (i = 'a'; i <= 'z'; i++)
*buffer++ = i;
}
else if (strncmp(arg, "digit", 5) == 0)
for (i = '0'; i <= '9'; i++)
*buffer++ = i;
else if (strncmp(arg, "lower", 5) == 0)
for (i = 'a'; i <= 'z'; i++)
*buffer++ = i;
else if (strncmp(arg, "upper", 5) == 0)
for (i = 'A'; i <= 'Z'; i++)
*buffer++ = i;
else if (strncmp(arg, "space", 5) == 0) {
const char s[] = "\t\n\v\f\r ";
strcat((char*)buffer, s);
buffer += sizeof(s) - 1;
}
else if (strncmp(arg, "blank", 5) == 0) {
if (j == CLASS_space || j == CLASS_blank) {
*buffer++ = '\t';
if (j == CLASS_space) {
*buffer++ = '\n';
*buffer++ = '\v';
*buffer++ = '\f';
*buffer++ = '\r';
}
*buffer++ = ' ';
}
/* gcc gives a warning if braces aren't used here */
else if (strncmp(arg, "punct", 5) == 0) {
if (j == CLASS_punct || j == CLASS_cntrl) {
for (i = 0; i <= ASCII; i++)
if (isprint(i) && (!isalnum(i)) && (!isspace(i)))
if ((j == CLASS_punct &&
isprint(i) && (!isalnum(i)) && (!isspace(i))) ||
(j == CLASS_cntrl && iscntrl(i)))
*buffer++ = i;
}
else if (strncmp(arg, "cntrl", 5) == 0) {
for (i = 0; i <= ASCII; i++)
if (iscntrl(i))
*buffer++ = i;
}
else {
if (j == CLASS_invalid) {
*buffer++ = '[';
*buffer++ = ':';
continue;
@@ -156,8 +165,7 @@ static unsigned int expand(const char *arg, char *buffer)
}
if (ENABLE_FEATURE_TR_EQUIV && i == '=') {
*buffer++ = *arg;
/* skip the closing =] */
arg += 3;
arg += 3; /* Skip the closing =] */
continue;
}
if (*arg++ != '-') {
@@ -168,11 +176,10 @@ static unsigned int expand(const char *arg, char *buffer)
ac = *arg++;
while (i <= ac)
*buffer++ = i++;
arg++; /* Skip the assumed ']' */
arg++; /* Skip the assumed ']' */
} else
*buffer++ = *arg++;
}
return (buffer - buffer_start);
}
@@ -197,10 +204,11 @@ int tr_main(int argc, char **argv);
int tr_main(int argc, char **argv)
{
unsigned char *ptr;
int output_length=0, input_length;
int output_length = 0, input_length;
int idx = 1;
int i;
RESERVE_CONFIG_BUFFER(output, BUFSIZ);
smalluint flags = 0;
RESERVE_CONFIG_UBUFFER(output, BUFSIZ);
RESERVE_CONFIG_BUFFER(vector, ASCII+1);
RESERVE_CONFIG_BUFFER(invec, ASCII+1);
RESERVE_CONFIG_BUFFER(outvec, ASCII+1);
@@ -213,19 +221,14 @@ int tr_main(int argc, char **argv)
if (argc > 1 && argv[idx][0] == '-') {
for (ptr = (unsigned char *) &argv[idx][1]; *ptr; ptr++) {
switch (*ptr) {
case 'c':
com_fl = TRUE;
break;
case 'd':
del_fl = TRUE;
break;
case 's':
sq_fl = TRUE;
break;
default:
if (*ptr == 'c')
flags |= TR_OPT_complement;
else if (*ptr == 'd')
flags |= TR_OPT_delete;
else if (*ptr == 's')
flags |= TR_OPT_squeeze_reps;
else
bb_show_usage();
}
}
idx++;
}
@@ -236,7 +239,7 @@ int tr_main(int argc, char **argv)
if (argv[idx] != NULL) {
input_length = expand(argv[idx++], bb_common_bufsiz1);
if (com_fl)
if (flags & TR_OPT_complement)
input_length = complement(bb_common_bufsiz1, input_length);
if (argv[idx] != NULL) {
if (*argv[idx] == '\0')
@@ -245,10 +248,10 @@ int tr_main(int argc, char **argv)
map(bb_common_bufsiz1, input_length, output, output_length);
}
for (i = 0; i < input_length; i++)
invec[(GCC4_IS_STUPID)bb_common_bufsiz1[i]] = TRUE;
invec[(unsigned char)bb_common_bufsiz1[i]] = TRUE;
for (i = 0; i < output_length; i++)
outvec[(GCC4_IS_STUPID)output[i]] = TRUE;
outvec[output[i]] = TRUE;
}
convert();
return 0;
convert(flags);
return EXIT_SUCCESS;
}

11
libbb/compare_string_array.c
View File

@@ -25,12 +25,11 @@ int index_in_substr_array(const char * const string_array[], const char *key)
{
int i;
int len = strlen(key);
if (!len)
return -1;
for (i = 0; string_array[i] != 0; i++) {
if (strncmp(string_array[i], key, len) == 0) {
return i;
if (len) {
for (i = 0; string_array[i] != 0; i++) {
if (strncmp(string_array[i], key, len) == 0) {
return i;
}
}
}
return -1;

4
testsuite/tr/tr-d-alnum-works Normal file
View File

@@ -0,0 +1,4 @@
echo testing | tr -d '[[:alnum:]]' > logfile.gnu
echo testing | busybox tr -d '[[:alnum:]]' > logfile.bb
diff -u logfile.gnu logfile.bb

2
testsuite/tr/tr-d-works
View File

@@ -1,4 +1,4 @@
echo testing | tr -d aeiou > logfile.gnu
echo testing | busybox tr -d aeiou > logfile.bb
cmp logfile.gnu logfile.bb
diff -u logfile.gnu logfile.bb

19
testsuite/tr/tr-rejects-wrong-class Normal file
View File

@@ -0,0 +1,19 @@
echo t12esting | tr -d '[[:alpha:]]' > logfile.gnu
echo t12esting | tr -d '[:alpha:]' >> logfile.gnu
echo t12esting | tr -d '[[:alpha:]' >> logfile.gnu
echo t12esting | tr -d '[[:alpha:' >> logfile.gnu
echo t12esting | tr -d '[[:alpha' >> logfile.gnu
echo t12esting | tr -d '[:alpha:]' >> logfile.gnu
echo t12esting | tr -d '[:alpha:' >> logfile.gnu
echo t12esting | tr -d '[:alpha' >> logfile.gnu
echo t12esting | busybox tr -d '[[:alpha:]]' > logfile.bb
echo t12esting | busybox tr -d '[:alpha:]' >> logfile.bb
echo t12esting | busybox tr -d '[[:alpha:]' >> logfile.bb
echo t12esting | busybox tr -d '[[:alpha:' >> logfile.bb
echo t12esting | busybox tr -d '[[:alpha' >> logfile.bb
echo t12esting | busybox tr -d '[:alpha:]' >> logfile.bb
echo t12esting | busybox tr -d '[:alpha:' >> logfile.bb
echo t12esting | busybox tr -d '[:alpha' >> logfile.bb
diff -u logfile.gnu logfile.bb

4
testsuite/tr/tr-works
View File

@@ -17,8 +17,10 @@ tr_test ()
run_tr " " '[:blank:]' 12
run_tr 'a b' '[= =]' X
run_tr "[:" '[:' ab
run_tr " .,:" '[:punct:]' 12
run_tr " .,:" '[:cntrl:]' 12
}
bb= tr_test > logfile.gnu
bb=busybox tr_test > logfile.bb
cmp logfile.gnu logfile.bb
diff -u logfile.gnu logfile.bb