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https://github.com/topjohnwu/ndk-busybox.git
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- fix bug where we did not reject invalid classes like '[[:alpha'
- 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
parent
52a9db6bb8
commit
eceecea568
163
coreutils/tr.c
163
coreutils/tr.c
@ -15,64 +15,61 @@
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* http://www.opengroup.org/onlinepubs/009695399/utilities/tr.html
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* TODO: xdigit, graph, print
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*/
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#include "busybox.h"
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// Even with -funsigned-char, gcc still complains about char as an array index.
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#define GCC4_IS_STUPID int
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#define ASCII 0377
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#define TR_OPT_complement (1<<0)
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#define TR_OPT_delete (1<<1)
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#define TR_OPT_squeeze_reps (1<<2)
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/* some "globals" shared across this file */
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static char com_fl, del_fl, sq_fl;
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/* these last are pointers to static buffers declared in tr_main */
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static char *poutput, *pvector, *pinvec, *poutvec;
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static void convert(void)
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static void ATTRIBUTE_NORETURN convert(const smalluint flags)
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{
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int read_chars = 0, in_index = 0, out_index = 0, c, coded, last = -1;
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size_t read_chars = 0, in_index = 0, out_index = 0, c, coded, last = -1;
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for (;;) {
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// If we're out of input, flush output and read more input.
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/* If we're out of input, flush output and read more input. */
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if (in_index == read_chars) {
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if (out_index) {
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if (write(1, (char *) poutput, out_index) != out_index)
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bb_error_msg_and_die(bb_msg_write_error);
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xwrite(STDOUT_FILENO, (char *)poutput, out_index);
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out_index = 0;
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}
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if ((read_chars = read(0, bb_common_bufsiz1, BUFSIZ)) <= 0) {
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if (write(1, (char *) poutput, out_index) != out_index)
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bb_error_msg(bb_msg_write_error);
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exit(0);
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if ((read_chars = read(STDIN_FILENO, bb_common_bufsiz1, BUFSIZ)) <= 0) {
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if (write(STDOUT_FILENO, (char *)poutput, out_index) != out_index)
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bb_perror_msg(bb_msg_write_error);
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exit(EXIT_SUCCESS);
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}
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in_index = 0;
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}
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c = bb_common_bufsiz1[in_index++];
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coded = pvector[c];
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if (del_fl && pinvec[c])
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if ((flags & TR_OPT_delete) && pinvec[c])
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continue;
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if (sq_fl && last == coded && (pinvec[c] || poutvec[coded]))
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if ((flags & TR_OPT_squeeze_reps) && last == coded &&
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(pinvec[c] || poutvec[coded]))
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continue;
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poutput[out_index++] = last = coded;
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}
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/* NOTREACHED */
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}
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static void map(char *string1, unsigned int string1_len,
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char *string2, unsigned int string2_len)
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static void map(unsigned char *string1, unsigned int string1_len,
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unsigned char *string2, unsigned int string2_len)
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{
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char last = '0';
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unsigned int i, j;
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for (j = 0, i = 0; i < string1_len; i++) {
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if (string2_len <= j)
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pvector[(GCC4_IS_STUPID)string1[i]] = last;
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pvector[string1[i]] = last;
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else
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pvector[(GCC4_IS_STUPID)string1[i]] = last = string2[j++];
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pvector[string1[i]] = last = string2[j++];
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}
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}
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@ -84,15 +81,35 @@ static void map(char *string1, unsigned int string1_len,
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static unsigned int expand(const char *arg, char *buffer)
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{
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char *buffer_start = buffer;
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int i, ac;
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unsigned i; /* XXX: FIXME: use unsigned char? */
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unsigned char ac;
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#if ENABLE_FEATURE_TR_CLASSES
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#define CLO ":]"
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const char * const classes[] = {
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"alpha"CLO, "alnum"CLO, "digit"CLO, "lower"CLO, "upper"CLO, "space"CLO,
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"blank"CLO, "punct"CLO, "cntrl"CLO, NULL
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};
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#define CLASS_invalid 0 /* we increment the retval */
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#define CLASS_alpha 1
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#define CLASS_alnum 2
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#define CLASS_digit 3
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#define CLASS_lower 4
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#define CLASS_upper 5
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#define CLASS_space 6
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#define CLASS_blank 7
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#define CLASS_punct 8
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#define CLASS_cntrl 9
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//#define CLASS_xdigit 10
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//#define CLASS_graph 11
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//#define CLASS_print 12
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#endif
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while (*arg) {
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if (*arg == '\\') {
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arg++;
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*buffer++ = bb_process_escape_sequence(&arg);
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} else if (*(arg+1) == '-') {
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ac = *(arg+2);
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if(ac == 0) {
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if (ac == 0) {
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*buffer++ = *arg++;
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continue;
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}
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@ -104,50 +121,42 @@ static unsigned int expand(const char *arg, char *buffer)
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arg++;
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i = *arg++;
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if (ENABLE_FEATURE_TR_CLASSES && i == ':') {
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if (strncmp(arg, "alpha", 5) == 0) {
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for (i = 'A'; i <= 'Z'; i++)
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*buffer++ = i;
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for (i = 'a'; i <= 'z'; i++)
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*buffer++ = i;
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smalluint j;
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{ /* not really pretty.. */
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char *tmp = xstrndup(arg, 7); // warning: xdigit needs 8, not 7
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j = index_in_str_array(classes, tmp) + 1;
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free(tmp);
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}
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else if (strncmp(arg, "alnum", 5) == 0) {
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if (j == CLASS_alnum || j == CLASS_digit) {
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for (i = '0'; i <= '9'; i++)
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*buffer++ = i;
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}
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if (j == CLASS_alpha || j == CLASS_alnum || j == CLASS_upper) {
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for (i = 'A'; i <= 'Z'; i++)
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*buffer++ = i;
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}
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if (j == CLASS_alpha || j == CLASS_alnum || j == CLASS_lower) {
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for (i = 'a'; i <= 'z'; i++)
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*buffer++ = i;
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}
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else if (strncmp(arg, "digit", 5) == 0)
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for (i = '0'; i <= '9'; i++)
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*buffer++ = i;
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else if (strncmp(arg, "lower", 5) == 0)
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for (i = 'a'; i <= 'z'; i++)
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*buffer++ = i;
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else if (strncmp(arg, "upper", 5) == 0)
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for (i = 'A'; i <= 'Z'; i++)
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*buffer++ = i;
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else if (strncmp(arg, "space", 5) == 0) {
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const char s[] = "\t\n\v\f\r ";
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strcat((char*)buffer, s);
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buffer += sizeof(s) - 1;
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}
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else if (strncmp(arg, "blank", 5) == 0) {
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if (j == CLASS_space || j == CLASS_blank) {
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*buffer++ = '\t';
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if (j == CLASS_space) {
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*buffer++ = '\n';
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*buffer++ = '\v';
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*buffer++ = '\f';
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*buffer++ = '\r';
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}
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*buffer++ = ' ';
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}
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/* gcc gives a warning if braces aren't used here */
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else if (strncmp(arg, "punct", 5) == 0) {
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if (j == CLASS_punct || j == CLASS_cntrl) {
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for (i = 0; i <= ASCII; i++)
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if (isprint(i) && (!isalnum(i)) && (!isspace(i)))
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if ((j == CLASS_punct &&
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isprint(i) && (!isalnum(i)) && (!isspace(i))) ||
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(j == CLASS_cntrl && iscntrl(i)))
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*buffer++ = i;
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}
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else if (strncmp(arg, "cntrl", 5) == 0) {
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for (i = 0; i <= ASCII; i++)
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if (iscntrl(i))
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*buffer++ = i;
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}
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else {
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if (j == CLASS_invalid) {
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*buffer++ = '[';
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*buffer++ = ':';
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continue;
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@ -156,8 +165,7 @@ static unsigned int expand(const char *arg, char *buffer)
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}
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if (ENABLE_FEATURE_TR_EQUIV && i == '=') {
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*buffer++ = *arg;
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/* skip the closing =] */
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arg += 3;
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arg += 3; /* Skip the closing =] */
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continue;
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}
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if (*arg++ != '-') {
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@ -168,11 +176,10 @@ static unsigned int expand(const char *arg, char *buffer)
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ac = *arg++;
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while (i <= ac)
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*buffer++ = i++;
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arg++; /* Skip the assumed ']' */
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arg++; /* Skip the assumed ']' */
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} else
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*buffer++ = *arg++;
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}
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return (buffer - buffer_start);
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}
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@ -197,10 +204,11 @@ int tr_main(int argc, char **argv);
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int tr_main(int argc, char **argv)
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{
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unsigned char *ptr;
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int output_length=0, input_length;
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int output_length = 0, input_length;
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int idx = 1;
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int i;
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RESERVE_CONFIG_BUFFER(output, BUFSIZ);
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smalluint flags = 0;
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RESERVE_CONFIG_UBUFFER(output, BUFSIZ);
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RESERVE_CONFIG_BUFFER(vector, ASCII+1);
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RESERVE_CONFIG_BUFFER(invec, ASCII+1);
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RESERVE_CONFIG_BUFFER(outvec, ASCII+1);
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@ -213,19 +221,14 @@ int tr_main(int argc, char **argv)
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if (argc > 1 && argv[idx][0] == '-') {
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for (ptr = (unsigned char *) &argv[idx][1]; *ptr; ptr++) {
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switch (*ptr) {
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case 'c':
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com_fl = TRUE;
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break;
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case 'd':
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del_fl = TRUE;
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break;
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case 's':
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sq_fl = TRUE;
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break;
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default:
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if (*ptr == 'c')
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flags |= TR_OPT_complement;
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else if (*ptr == 'd')
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flags |= TR_OPT_delete;
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else if (*ptr == 's')
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flags |= TR_OPT_squeeze_reps;
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else
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bb_show_usage();
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}
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}
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idx++;
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}
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@ -236,7 +239,7 @@ int tr_main(int argc, char **argv)
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if (argv[idx] != NULL) {
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input_length = expand(argv[idx++], bb_common_bufsiz1);
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if (com_fl)
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if (flags & TR_OPT_complement)
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input_length = complement(bb_common_bufsiz1, input_length);
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if (argv[idx] != NULL) {
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if (*argv[idx] == '\0')
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@ -245,10 +248,10 @@ int tr_main(int argc, char **argv)
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map(bb_common_bufsiz1, input_length, output, output_length);
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}
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for (i = 0; i < input_length; i++)
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invec[(GCC4_IS_STUPID)bb_common_bufsiz1[i]] = TRUE;
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invec[(unsigned char)bb_common_bufsiz1[i]] = TRUE;
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for (i = 0; i < output_length; i++)
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outvec[(GCC4_IS_STUPID)output[i]] = TRUE;
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outvec[output[i]] = TRUE;
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}
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convert();
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return 0;
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convert(flags);
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return EXIT_SUCCESS;
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}
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@ -25,12 +25,11 @@ int index_in_substr_array(const char * const string_array[], const char *key)
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{
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int i;
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int len = strlen(key);
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if (!len)
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return -1;
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for (i = 0; string_array[i] != 0; i++) {
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if (strncmp(string_array[i], key, len) == 0) {
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return i;
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if (len) {
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for (i = 0; string_array[i] != 0; i++) {
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if (strncmp(string_array[i], key, len) == 0) {
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return i;
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}
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}
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}
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return -1;
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4
testsuite/tr/tr-d-alnum-works
Normal file
4
testsuite/tr/tr-d-alnum-works
Normal file
@ -0,0 +1,4 @@
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echo testing | tr -d '[[:alnum:]]' > logfile.gnu
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echo testing | busybox tr -d '[[:alnum:]]' > logfile.bb
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diff -u logfile.gnu logfile.bb
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@ -1,4 +1,4 @@
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echo testing | tr -d aeiou > logfile.gnu
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echo testing | busybox tr -d aeiou > logfile.bb
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cmp logfile.gnu logfile.bb
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diff -u logfile.gnu logfile.bb
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19
testsuite/tr/tr-rejects-wrong-class
Normal file
19
testsuite/tr/tr-rejects-wrong-class
Normal file
@ -0,0 +1,19 @@
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echo t12esting | tr -d '[[:alpha:]]' > logfile.gnu
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echo t12esting | tr -d '[:alpha:]' >> logfile.gnu
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echo t12esting | tr -d '[[:alpha:]' >> logfile.gnu
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echo t12esting | tr -d '[[:alpha:' >> logfile.gnu
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echo t12esting | tr -d '[[:alpha' >> logfile.gnu
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echo t12esting | tr -d '[:alpha:]' >> logfile.gnu
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echo t12esting | tr -d '[:alpha:' >> logfile.gnu
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echo t12esting | tr -d '[:alpha' >> logfile.gnu
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echo t12esting | busybox tr -d '[[:alpha:]]' > logfile.bb
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echo t12esting | busybox tr -d '[:alpha:]' >> logfile.bb
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echo t12esting | busybox tr -d '[[:alpha:]' >> logfile.bb
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echo t12esting | busybox tr -d '[[:alpha:' >> logfile.bb
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echo t12esting | busybox tr -d '[[:alpha' >> logfile.bb
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echo t12esting | busybox tr -d '[:alpha:]' >> logfile.bb
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echo t12esting | busybox tr -d '[:alpha:' >> logfile.bb
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echo t12esting | busybox tr -d '[:alpha' >> logfile.bb
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diff -u logfile.gnu logfile.bb
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@ -17,8 +17,10 @@ tr_test ()
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run_tr " " '[:blank:]' 12
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run_tr 'a b' '[= =]' X
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run_tr "[:" '[:' ab
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run_tr " .,:" '[:punct:]' 12
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run_tr " .,:" '[:cntrl:]' 12
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}
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bb= tr_test > logfile.gnu
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bb=busybox tr_test > logfile.bb
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cmp logfile.gnu logfile.bb
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diff -u logfile.gnu logfile.bb
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