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* Fix to tr so it recognizes standard escape sequences. Merged common
escape seq. code from tr and echo into utility.c. Fix thanks to Matt Kraai <kraai@alumni.carnegiemellon.edu>. * This should close Bug #1015. Please test. -Erik
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parent
57ebebfb01
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@ -24,6 +24,9 @@
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of thing. Patch thanks to David Vrabel <dvrabel@arcom.co.uk>
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* Fix to init.c from Stuart Menefy <Stuart.Menefy@st.com> so that
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it always sets the controlling terminal before running any programs
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* Fix to tr so it recognizes standard escape sequences. Merged common
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escape seq. code from tr and echo into utility.c. Fix thanks to
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Matt Kraai <kraai@alumni.carnegiemellon.edu>.
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-Erik Andersen
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@ -40,7 +40,7 @@ extern int
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echo_main(int argc, char** argv)
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{
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register char **ap;
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register char *p;
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char *p;
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register char c;
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int nflag = 0;
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int eflag = 0;
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@ -65,28 +65,10 @@ echo_main(int argc, char** argv)
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while ((p = *ap++) != NULL) {
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while ((c = *p++) != '\0') {
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if (c == '\\' && eflag) {
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switch (c = *p++) {
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case 'a': c = '\007'; break;
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case 'b': c = '\b'; break;
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case 'c': exit( 0); /* exit */
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case 'f': c = '\f'; break;
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case 'n': c = '\n'; break;
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case 'r': c = '\r'; break;
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case 't': c = '\t'; break;
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case 'v': c = '\v'; break;
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case '\\': break; /* c = '\\' */
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case '0': case '1': case '2': case '3':
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case '4': case '5': case '6': case '7':
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c -= '0';
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if (*p >= '0' && *p <= '7')
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c = c * 8 + (*p++ - '0');
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if (*p >= '0' && *p <= '7')
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c = c * 8 + (*p++ - '0');
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break;
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default:
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p--;
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break;
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}
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if (*p == 'c')
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exit(0);
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else
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c = process_escape_sequence(&p);
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}
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putchar(c);
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}
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@ -111,22 +111,14 @@ static void map(register unsigned char *string1, register unsigned char *string2
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}
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}
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static void expand(register char *arg, register unsigned char *buffer)
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static void expand(char *arg, register unsigned char *buffer)
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{
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int i, ac;
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while (*arg) {
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if (*arg == '\\') {
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arg++;
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i = ac = 0;
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if (*arg >= '0' && *arg <= '7') {
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do {
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ac = (ac << 3) + *arg++ - '0';
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i++;
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} while (i < 4 && *arg >= '0' && *arg <= '7');
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*buffer++ = ac;
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} else if (*arg != '\0')
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*buffer++ = *arg++;
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*buffer++ = process_escape_sequence(&arg);
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} else if (*arg == '[') {
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arg++;
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i = *arg++;
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28
echo.c
28
echo.c
@ -40,7 +40,7 @@ extern int
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echo_main(int argc, char** argv)
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{
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register char **ap;
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register char *p;
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char *p;
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register char c;
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int nflag = 0;
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int eflag = 0;
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@ -65,28 +65,10 @@ echo_main(int argc, char** argv)
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while ((p = *ap++) != NULL) {
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while ((c = *p++) != '\0') {
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if (c == '\\' && eflag) {
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switch (c = *p++) {
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case 'a': c = '\007'; break;
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case 'b': c = '\b'; break;
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case 'c': exit( 0); /* exit */
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case 'f': c = '\f'; break;
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case 'n': c = '\n'; break;
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case 'r': c = '\r'; break;
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case 't': c = '\t'; break;
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case 'v': c = '\v'; break;
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case '\\': break; /* c = '\\' */
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case '0': case '1': case '2': case '3':
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case '4': case '5': case '6': case '7':
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c -= '0';
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if (*p >= '0' && *p <= '7')
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c = c * 8 + (*p++ - '0');
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if (*p >= '0' && *p <= '7')
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c = c * 8 + (*p++ - '0');
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break;
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default:
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p--;
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break;
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}
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if (*p == 'c')
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exit(0);
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else
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c = process_escape_sequence(&p);
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}
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putchar(c);
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}
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@ -259,6 +259,7 @@ extern pid_t* findPidByName( char* pidName);
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extern void *xmalloc (size_t size);
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extern int find_real_root_device_name(char* name);
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extern char *get_line_from_file(FILE *file);
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extern char process_escape_sequence(char **ptr);
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/* These parse entries in /etc/passwd and /etc/group. This is desirable
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* for BusyBox since we want to avoid using the glibc NSS stuff, which
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12
tr.c
12
tr.c
@ -111,22 +111,14 @@ static void map(register unsigned char *string1, register unsigned char *string2
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}
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}
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static void expand(register char *arg, register unsigned char *buffer)
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static void expand(char *arg, register unsigned char *buffer)
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{
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int i, ac;
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while (*arg) {
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if (*arg == '\\') {
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arg++;
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i = ac = 0;
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if (*arg >= '0' && *arg <= '7') {
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do {
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ac = (ac << 3) + *arg++ - '0';
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i++;
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} while (i < 4 && *arg >= '0' && *arg <= '7');
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*buffer++ = ac;
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} else if (*arg != '\0')
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*buffer++ = *arg++;
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*buffer++ = process_escape_sequence(&arg);
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} else if (*arg == '[') {
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arg++;
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i = *arg++;
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45
utility.c
45
utility.c
@ -1617,6 +1617,51 @@ extern char *get_line_from_file(FILE *file)
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return linebuf;
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}
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#if defined BB_ECHO || defined BB_TR
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char process_escape_sequence(char **ptr)
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{
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char c;
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switch (c = *(*ptr)++) {
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case 'a':
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c = '\a';
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break;
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case 'b':
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c = '\b';
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break;
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case 'f':
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c = '\f';
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break;
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case 'n':
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c = '\n';
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break;
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case 't':
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c = '\t';
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break;
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case 'v':
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c = '\v';
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break;
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case '\\':
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c = '\\';
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break;
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case '0': case '1': case '2': case '3':
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case '4': case '5': case '6': case '7':
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c -= '0';
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if ('0' <= **ptr && **ptr <= '7') {
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c = c * 8 + (*(*ptr)++ - '0');
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if ('0' <= **ptr && **ptr <= '7')
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c = c * 8 + (*(*ptr)++ - '0');
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}
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break;
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default:
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(*ptr)--;
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c = '\\';
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break;
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}
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return c;
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}
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#endif
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/* END CODE */
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/*
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Local Variables:
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