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-rw-r--r--i/pc104/initrd/conf/busybox/coreutils/tr.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/coreutils/tr.c b/i/pc104/initrd/conf/busybox/coreutils/tr.c
new file mode 100644
index 0000000..cea3b05
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/coreutils/tr.c
@@ -0,0 +1,254 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini tr implementation for busybox
+ *
+ ** Copyright (c) 1987,1997, Prentice Hall All rights reserved.
+ *
+ * The name of Prentice Hall may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * Copyright (c) Michiel Huisjes
+ *
+ * This version of tr is adapted from Minix tr and was modified
+ * by Erik Andersen <andersen@codepoet.org> to be used in busybox.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "busybox.h"
+
+// 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;
+/* these last are pointers to static buffers declared in tr_main */
+static char *poutput, *pvector, *pinvec, *poutvec;
+
+static void convert(void)
+{
+ 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 (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 = 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;
+ }
+
+ /* NOTREACHED */
+}
+
+static void map(char *string1, unsigned int string1_len,
+ 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;
+ else
+ 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, char *buffer)
+{
+ char *buffer_start = buffer;
+ int i, ac;
+
+ while (*arg) {
+ if (*arg == '\\') {
+ arg++;
+ *buffer++ = bb_process_escape_sequence(&arg);
+ } else if (*(arg+1) == '-') {
+ ac = *(arg+2);
+ if(ac == 0) {
+ *buffer++ = *arg++;
+ continue;
+ }
+ i = *arg;
+ while (i <= ac)
+ *buffer++ = i++;
+ arg += 3; /* Skip the assumed a-z */
+ } 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;
+ continue;
+ }
+ ac = *arg++;
+ while (i <= ac)
+ *buffer++ = i++;
+ arg++; /* Skip the assumed ']' */
+ } else
+ *buffer++ = *arg++;
+ }
+
+ return (buffer - buffer_start);
+}
+
+static int complement(char *buffer, int buffer_len)
+{
+ short i, j, ix;
+ char conv[ASCII + 2];
+
+ ix = 0;
+ for (i = 0; i <= ASCII; i++) {
+ for (j = 0; j < buffer_len; j++)
+ if (buffer[j] == i)
+ break;
+ if (j == buffer_len)
+ conv[ix++] = i & ASCII;
+ }
+ memcpy(buffer, conv, ix);
+ return ix;
+}
+
+int tr_main(int argc, char **argv);
+int tr_main(int argc, char **argv)
+{
+ unsigned char *ptr;
+ int output_length=0, input_length;
+ int idx = 1;
+ int i;
+ RESERVE_CONFIG_BUFFER(output, BUFSIZ);
+ 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;
+ pvector = vector;
+ pinvec = invec;
+ poutvec = outvec;
+
+ 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:
+ bb_show_usage();
+ }
+ }
+ idx++;
+ }
+ for (i = 0; i <= ASCII; i++) {
+ vector[i] = i;
+ invec[i] = outvec[i] = FALSE;
+ }
+
+ if (argv[idx] != NULL) {
+ input_length = expand(argv[idx++], bb_common_bufsiz1);
+ if (com_fl)
+ 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(bb_common_bufsiz1, input_length, output, output_length);
+ }
+ for (i = 0; i < input_length; i++)
+ invec[(GCC4_IS_STUPID)bb_common_bufsiz1[i]] = TRUE;
+ for (i = 0; i < output_length; i++)
+ outvec[(GCC4_IS_STUPID)output[i]] = TRUE;
+ }
+ convert();
+ return 0;
+}