diff options
| -rw-r--r-- | coreutils/tr.c | 58 |
1 files changed, 55 insertions, 3 deletions
diff --git a/coreutils/tr.c b/coreutils/tr.c index 1325245..6e3f97b 100644 --- a/coreutils/tr.c +++ b/coreutils/tr.c @@ -28,11 +28,10 @@ #include <string.h> #include <stdlib.h> #include <unistd.h> +#include <ctype.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. */ #define ASCII 0377 /* some "globals" shared across this file */ @@ -93,6 +92,7 @@ static void map(register unsigned char *string1, unsigned int string1_len, /* 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) { @@ -115,12 +115,64 @@ static unsigned int expand(const char *arg, register unsigned char *buffer) arg += 3; /* Skip the assumed a-z */ } else if (*arg == '[') { arg++; - i = *arg++; + if (ENABLE_FEATURE_TR_CLASSES && *arg++ == ':') { + 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 = 'A'; i <= 'Z'; i++) + *buffer++ = i; + for (i = 'a'; i <= 'z'; i++) + *buffer++ = i; + for (i = '0'; i <= '9'; 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) + strcat(buffer, " \f\n\r\t\v"); + else if (strncmp(arg, "blank", 5) == 0) + strcat(buffer, " \t"); + /* 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 { + strcat(buffer, "[:"); + arg++; + continue; + } + break; + } + if (ENABLE_FEATURE_TR_EQUIV && *arg++ == '=') { + *buffer++ = *arg; + /* skip the closing =] */ + arg += 3; + continue; + } if (*arg++ != '-') { *buffer++ = '['; arg -= 2; continue; } + i = *arg++; ac = *arg++; while (i <= ac) *buffer++ = i++; |