libbb: robustify isXXXX(). +39 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -128,7 +128,7 @@ static char *get_key(char *str, struct sort_key *key, int flags)
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/* Handle -i */
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if (flags & FLAG_i) {
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for (start = end = 0; str[end]; end++)
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if (isprint(str[end]))
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if (isprint_asciionly(str[end]))
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str[start++] = str[end];
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str[start] = '\0';
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}
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@ -153,7 +153,7 @@ static unsigned expand(const char *arg, char **buffer_p)
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}
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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 ((j == CLASS_punct && isprint(i) && !isalnum(i) && !isspace(i))
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if ((j == CLASS_punct && isprint_asciionly(i) && !isalnum(i) && !isspace(i))
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|| (j == CLASS_cntrl && iscntrl(i))
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) {
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buffer[pos++] = i;
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@ -749,7 +749,7 @@ static int asciifile(FILE *f)
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rewind(f);
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cnt = fread(g_read_buf, 1, COMMON_BUFSIZE, f);
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for (i = 0; i < cnt; i++) {
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if (!isprint(g_read_buf[i])
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if (!isprint_asciionly(g_read_buf[i])
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&& !isspace(g_read_buf[i])
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) {
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return 0;
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@ -30,9 +30,9 @@
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#if ENABLE_LOCALE_SUPPORT
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#if ENABLE_FEATURE_VI_8BIT
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#define Isprint(c) isprint(c)
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# define Isprint(c) isprint(c)
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#else
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#define Isprint(c) (isprint(c) && (unsigned char)(c) < 0x7f)
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# define Isprint(c) (isprint(c) && (unsigned char)(c) < 0x7f)
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#endif
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#else
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@ -1606,10 +1606,11 @@ extern const char bb_default_login_shell[];
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/* We save ~500 bytes on isdigit alone.
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* BTW, x86 likes (unsigned char) cast more than (unsigned). */
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#define isdigit(a) ((unsigned char)((a) - '0') <= 9)
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/* These work the same for ASCII and Unicode,
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* assuming no one asks "is this a *Unicode* letter?" using isalpha(letter) */
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#define isascii(a) ((unsigned char)(a) <= 0x7f)
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#define isgraph(a) ((unsigned char)(a) > ' ')
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#define isprint(a) ((unsigned char)(a) >= ' ')
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#define isdigit(a) ((unsigned char)((a) - '0') <= 9)
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#define isupper(a) ((unsigned char)((a) - 'A') <= ('Z' - 'A'))
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#define islower(a) ((unsigned char)((a) - 'a') <= ('z' - 'a'))
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#define isalpha(a) ((unsigned char)(((a)|0x20) - 'a') <= ('z' - 'a'))
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@ -1619,9 +1620,9 @@ extern const char bb_default_login_shell[];
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* "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
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*/
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#define isspace(a) ({ unsigned char bb__isspace = (a) - 9; bb__isspace == (' ' - 9) || bb__isspace <= (13 - 9); })
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// Bigger code:
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//#define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; })
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// Unsafe wrt NUL: #define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL)
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#define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0])
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// Bigger code: #define isalnum(a) ({ unsigned char bb__isalnum = (a) - '0'; bb__isalnum <= 9 || ((bb__isalnum - ('A' - '0')) & 0xdf) <= 25; })
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#define isalnum(a) bb_ascii_isalnum(a)
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static ALWAYS_INLINE int bb_ascii_isalnum(unsigned char a)
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{
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@ -1640,11 +1641,6 @@ static ALWAYS_INLINE int bb_ascii_isxdigit(unsigned char a)
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b = (a|0x20) - 'a';
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return b <= 'f' - 'a';
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}
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// Unsafe wrt NUL!
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//#define ispunct(a) (strchr("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a)) != NULL)
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#define ispunct(a) (strchrnul("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~", (a))[0])
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#define toupper(a) bb_ascii_toupper(a)
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static ALWAYS_INLINE unsigned char bb_ascii_toupper(unsigned char a)
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{
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@ -1662,6 +1658,14 @@ static ALWAYS_INLINE unsigned char bb_ascii_tolower(unsigned char a)
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return a;
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}
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/* In ASCII and Unicode, these are likely to be very different.
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* Let's prevent ambiguous usage from the start */
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#define isgraph(a) isgraph_is_ambiguous_dont_use(a)
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#define isprint(a) isprint_is_ambiguous_dont_use(a)
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/* NB: must not treat EOF as isgraph or isprint */
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#define isgraph_asciionly(a) ((unsigned)((a) - 0x21) <= 0x7e - 0x21)
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#define isprint_asciionly(a) ((unsigned)((a) - 0x20) <= 0x7e - 0x20)
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POP_SAVED_FUNCTION_VISIBILITY
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@ -492,13 +492,13 @@ static void conv_c(PR *pr, unsigned char *p)
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str += 4;
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} while (*str);
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if (isprint(*p)) {
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if (isprint_asciionly(*p)) {
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*pr->cchar = 'c';
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printf(pr->fmt, *p);
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} else {
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sprintf(buf, "%03o", (int) *p);
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str = buf;
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strpr:
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strpr:
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*pr->cchar = 's';
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printf(pr->fmt, str);
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}
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@ -519,7 +519,7 @@ static void conv_u(PR *pr, unsigned char *p)
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} else if (*p == 0x7f) {
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*pr->cchar = 's';
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printf(pr->fmt, "del");
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} else if (isprint(*p)) {
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} else if (*p < 0x7f) { /* isprint() */
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*pr->cchar = 'c';
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printf(pr->fmt, *p);
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} else {
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@ -609,7 +609,7 @@ static void display(priv_dumper_t* dumper)
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break;
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}
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case F_P:
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printf(pr->fmt, isprint(*bp) ? *bp : '.');
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printf(pr->fmt, isprint_asciionly(*bp) ? *bp : '.');
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break;
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case F_STR:
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printf(pr->fmt, (char *) bp);
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@ -487,7 +487,7 @@ static char *get_logname(char *logname, unsigned size_logname,
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case CTL('D'):
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exit(EXIT_SUCCESS);
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default:
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if (!isprint(ascval)) {
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if (ascval < ' ') {
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/* ignore garbage characters */
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} else if ((int)(bp - logname) >= size_logname - 1) {
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bb_error_msg_and_die("%s: input overrun", op->tty);
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@ -49,7 +49,7 @@ int strings_main(int argc UNUSED_PARAM, char **argv)
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count = 0;
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do {
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c = fgetc(file);
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if (isprint(c) || c == '\t') {
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if (isprint_asciionly(c) || c == '\t') {
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if (count > n) {
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bb_putchar(c);
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} else {
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@ -1475,9 +1475,8 @@ static void init_ring(void)
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int i;
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end_ring = ring;
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for (i = 0; i <= 128; ++i)
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if (isprint(i))
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*end_ring++ = i;
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for (i = ' '; i < 127; i++)
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*end_ring++ = i;
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}
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/* Character generator. MMU arches only. */
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/* ARGSUSED */
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