/*
* Mini tr implementation for busybox
*
- * Copyright (c) Michiel Huisjes
+ ** Copyright (c) 1987,1997, Prentice Hall All rights reserved.
*
- * This version of tr is adapted from Minix tr and was modified
- * by Erik Andersen <andersen@codepoet.org> to be used in busybox.
+ * The name of Prentice Hall may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (c) Michiel Huisjes
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * This version of tr is adapted from Minix tr and was modified
+ * by Erik Andersen <andersen@codepoet.org> to be used in busybox.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Original copyright notice is retained at the end of this file.
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
#include "busybox.h"
-/* This must be a #define, since when CONFIG_DEBUG and BUFFERS_GO_IN_BSS are
- * enabled, we otherwise get a "storage size isn't constant error. */
+// Even with -funsigned-char, gcc still complains about char as an array index.
+
+#define GCC4_IS_STUPID int
+
#define ASCII 0377
/* some "globals" shared across this file */
static char com_fl, del_fl, sq_fl;
-static short in_index, out_index;
/* these last are pointers to static buffers declared in tr_main */
-static unsigned char *poutput, *pinput;
-static unsigned char *pvector;
-static char *pinvec, *poutvec;
-
+static char *poutput, *pvector, *pinvec, *poutvec;
static void convert(void)
{
- short read_chars = 0;
- short c, coded;
- short last = -1;
+ int 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 (in_index == read_chars) {
- if ((read_chars = read(0, (char *) pinput, BUFSIZ)) <= 0) {
+ if (out_index) {
+ if (write(1, (char *) poutput, out_index) != out_index)
+ bb_error_msg_and_die(bb_msg_write_error);
+ 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);
}
in_index = 0;
}
- c = pinput[in_index++];
+ c = bb_common_bufsiz1[in_index++];
coded = pvector[c];
if (del_fl && pinvec[c])
continue;
if (sq_fl && last == coded && (pinvec[c] || poutvec[coded]))
continue;
poutput[out_index++] = last = coded;
- if (out_index == BUFSIZ) {
- if (write(1, (char *) poutput, out_index) != out_index)
- bb_error_msg_and_die(bb_msg_write_error);
- out_index = 0;
- }
}
/* NOTREACHED */
}
-static void map(register unsigned char *string1, unsigned int string1_len,
- register unsigned char *string2, unsigned int string2_len)
+static void map(char *string1, unsigned int string1_len,
+ char *string2, unsigned int string2_len)
{
- unsigned char last = '0';
+ char last = '0';
unsigned int i, j;
for (j = 0, i = 0; i < string1_len; i++) {
if (string2_len <= j)
- pvector[string1[i]] = last;
+ pvector[(GCC4_IS_STUPID)string1[i]] = last;
else
- pvector[string1[i]] = last = string2[j++];
+ pvector[(GCC4_IS_STUPID)string1[i]] = last = string2[j++];
}
}
/* supported constructs:
* Ranges, e.g., [0-9] ==> 0123456789
* Escapes, e.g., \a ==> Control-G
+ * Character classes, e.g. [:upper:] ==> A ... Z
*/
-static unsigned int expand(const char *arg, register unsigned char *buffer)
+static unsigned int expand(const char *arg, char *buffer)
{
- unsigned char *buffer_start = buffer;
+ char *buffer_start = buffer;
int i, ac;
while (*arg) {
} else if (*arg == '[') {
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;
+ }
+ else if (strncmp(arg, "alnum", 5) == 0) {
+ for (i = '0'; i <= '9'; i++)
+ *buffer++ = i;
+ for (i = 'A'; i <= 'Z'; i++)
+ *buffer++ = i;
+ 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) {
+ *buffer++ = '\t';
+ *buffer++ = ' ';
+ }
+ /* gcc gives a warning if braces aren't used here */
+ else if (strncmp(arg, "punct", 5) == 0) {
+ for (i = 0; i <= ASCII; i++)
+ if (isprint(i) && (!isalnum(i)) && (!isspace(i)))
+ *buffer++ = i;
+ }
+ else if (strncmp(arg, "cntrl", 5) == 0) {
+ for (i = 0; i <= ASCII; i++)
+ if (iscntrl(i))
+ *buffer++ = i;
+ }
+ else {
+ *buffer++ = '[';
+ *buffer++ = ':';
+ continue;
+ }
+ break;
+ }
+ if (ENABLE_FEATURE_TR_EQUIV && i == '=') {
+ *buffer++ = *arg;
+ /* skip the closing =] */
+ arg += 3;
+ continue;
+ }
if (*arg++ != '-') {
*buffer++ = '[';
arg -= 2;
return (buffer - buffer_start);
}
-static int complement(unsigned char *buffer, int buffer_len)
+static int complement(char *buffer, int buffer_len)
{
- register short i, j, ix;
+ short i, j, ix;
char conv[ASCII + 2];
ix = 0;
return ix;
}
-extern int tr_main(int argc, char **argv)
+int tr_main(int argc, char **argv);
+int tr_main(int argc, char **argv)
{
- register unsigned char *ptr;
+ unsigned char *ptr;
int output_length=0, input_length;
int idx = 1;
int i;
RESERVE_CONFIG_BUFFER(output, BUFSIZ);
- RESERVE_CONFIG_BUFFER(input, BUFSIZ);
- RESERVE_CONFIG_UBUFFER(vector, ASCII+1);
+ RESERVE_CONFIG_BUFFER(vector, ASCII+1);
RESERVE_CONFIG_BUFFER(invec, ASCII+1);
RESERVE_CONFIG_BUFFER(outvec, ASCII+1);
/* ... but make them available globally */
poutput = output;
- pinput = input;
pvector = vector;
pinvec = invec;
poutvec = outvec;
}
if (argv[idx] != NULL) {
- input_length = expand(argv[idx++], input);
+ input_length = expand(argv[idx++], bb_common_bufsiz1);
if (com_fl)
- input_length = complement(input, input_length);
+ input_length = complement(bb_common_bufsiz1, input_length);
if (argv[idx] != NULL) {
if (*argv[idx] == '\0')
bb_error_msg_and_die("STRING2 cannot be empty");
output_length = expand(argv[idx], output);
- map(input, input_length, output, output_length);
+ map(bb_common_bufsiz1, input_length, output, output_length);
}
for (i = 0; i < input_length; i++)
- invec[(int)input[i]] = TRUE;
+ invec[(GCC4_IS_STUPID)bb_common_bufsiz1[i]] = TRUE;
for (i = 0; i < output_length; i++)
- outvec[(int)output[i]] = TRUE;
+ outvec[(GCC4_IS_STUPID)output[i]] = TRUE;
}
convert();
- return (0);
+ return 0;
}
-
-/*
- * Copyright (c) 1987,1997, Prentice Hall
- * All rights reserved.
- *
- * Redistribution and use of the MINIX operating system in source and
- * binary forms, with or without modification, are permitted provided
- * that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * Neither the name of Prentice Hall nor the names of the software
- * authors or contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND
- * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
projects / oweals / busybox.git / blobdiff