diff options
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/Kbuild | 2 | ||||
| -rw-r--r-- | libbb/xatol.c | 236 | ||||
| -rw-r--r-- | libbb/xatonum.c | 91 | ||||
| -rw-r--r-- | libbb/xatonum_template.c | 175 |
4 files changed, 267 insertions, 237 deletions
diff --git a/libbb/Kbuild b/libbb/Kbuild index fc4798bf3..1ddec9a8d 100644 --- a/libbb/Kbuild +++ b/libbb/Kbuild @@ -87,7 +87,7 @@ lib-y += vperror_msg.o lib-y += warn_ignoring_args.o lib-y += wfopen.o lib-y += wfopen_input.o -lib-y += xatol.o +lib-y += xatonum.o lib-y += xconnect.o lib-y += xfuncs.o lib-y += xgetcwd.o diff --git a/libbb/xatol.c b/libbb/xatol.c deleted file mode 100644 index cce8ad3eb..000000000 --- a/libbb/xatol.c +++ /dev/null @@ -1,236 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * ascii-to-numbers implementations for busybox - * - * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> - * - * Licensed under GPLv2, see file LICENSE in this tarball for details. - */ - -#include "libbb.h" - -unsigned long long xstrtoull(const char *numstr, int base) -{ - unsigned long long r; - int old_errno; - char *e; - if ((*numstr == '-') || (isspace)(*numstr)) - bb_error_msg_and_die("invalid number '%s'", numstr); - old_errno = errno; - errno = 0; - r = strtoull(numstr, &e, base); - if (errno || (numstr == e) || *e) - /* Error / no digits / illegal trailing chars */ - bb_error_msg_and_die("invalid number '%s'", numstr); - /* No error. So restore errno. */ - errno = old_errno; - return r; -} - -unsigned long long xatoull(const char *numstr) -{ - return xstrtoull(numstr, 10); -} - -unsigned long xstrtoul_range_sfx(const char *numstr, int base, - unsigned long lower, - unsigned long upper, - const struct suffix_mult *suffixes) -{ - unsigned long r; - int old_errno; - char *e; - - /* Disallow '-' and any leading whitespace. Speed isn't critical here - * since we're parsing commandline args. So make sure we get the - * actual isspace function rather than a lnumstrer macro implementaion. */ - if ((*numstr == '-') || (isspace)(*numstr)) - goto inval; - - /* Since this is a lib function, we're not allowed to reset errno to 0. - * Doing so could break an app that is deferring checking of errno. - * So, save the old value so that we can restore it if successful. */ - old_errno = errno; - errno = 0; - r = strtoul(numstr, &e, base); - /* Do the initial validity check. Note: The standards do not - * guarantee that errno is set if no digits were found. So we - * must test for this explicitly. */ - if (errno || (numstr == e)) - goto inval; /* error / no digits / illegal trailing chars */ - - errno = old_errno; /* Ok. So restore errno. */ - - /* Do optional suffix parsing. Allow 'empty' suffix tables. - * Note that we also allow nul suffixes with associated multipliers, - * to allow for scaling of the numstr by some default multiplier. */ - if (suffixes) { - while (suffixes->suffix) { - if (strcmp(suffixes->suffix, e) == 0) { - if (ULONG_MAX / suffixes->mult < r) - goto range; /* overflow! */ - ++e; - r *= suffixes->mult; - break; - } - ++suffixes; - } - } - - /* Note: trailing space is an error. - It would be easy enough to allow though if desired. */ - if (*e) - goto inval; - /* Finally, check for range limits. */ - if (r >= lower && r <= upper) - return r; - range: - bb_error_msg_and_die("number %s is not in %lu..%lu range", - numstr, lower, upper); - inval: - bb_error_msg_and_die("invalid number '%s'", numstr); -} - -unsigned long xstrtoul_range(const char *numstr, int base, - unsigned long lower, - unsigned long upper) -{ - return xstrtoul_range_sfx(numstr, base, lower, upper, NULL); -} - -unsigned long xstrtoul_sfx(const char *numstr, int base, - const struct suffix_mult *suffixes) -{ - return xstrtoul_range_sfx(numstr, base, 0, ULONG_MAX, suffixes); -} - -unsigned long xstrtoul(const char *numstr, int base) -{ - return xstrtoul_range_sfx(numstr, base, 0, ULONG_MAX, NULL); -} - -unsigned long xatoul_range_sfx(const char *numstr, - unsigned long lower, - unsigned long upper, - const struct suffix_mult *suffixes) -{ - return xstrtoul_range_sfx(numstr, 10, lower, upper, suffixes); -} - -unsigned long xatoul_sfx(const char *numstr, - const struct suffix_mult *suffixes) -{ - return xstrtoul_range_sfx(numstr, 10, 0, ULONG_MAX, suffixes); -} - -unsigned long xatoul_range(const char *numstr, - unsigned long lower, - unsigned long upper) -{ - return xstrtoul_range_sfx(numstr, 10, lower, upper, NULL); -} - -unsigned long xatoul(const char *numstr) -{ - return xatoul_sfx(numstr, NULL); -} - -/* Signed ones */ - -long xstrtol_range_sfx(const char *numstr, int base, - long lower, - long upper, - const struct suffix_mult *suffixes) -{ - unsigned long u = LONG_MAX; - long r; - const char *p = numstr; - - if ((p[0] == '-') && (p[1] != '+')) { - ++p; - ++u; /* two's complement */ - } - - r = xstrtoul_range_sfx(p, base, 0, u, suffixes); - - if (*numstr == '-') { - r = -r; - } - - if (r < lower || r > upper) { - bb_error_msg_and_die("number %s is not in %ld..%ld range", - numstr, lower, upper); - } - - return r; -} - -long xstrtol_range(const char *numstr, int base, long lower, long upper) -{ - return xstrtol_range_sfx(numstr, base, lower, upper, NULL); -} - -long xatol_range_sfx(const char *numstr, - long lower, - long upper, - const struct suffix_mult *suffixes) -{ - return xstrtol_range_sfx(numstr, 10, lower, upper, suffixes); -} - -long xatol_range(const char *numstr, long lower, long upper) -{ - return xstrtol_range_sfx(numstr, 10, lower, upper, NULL); -} - -long xatol_sfx(const char *numstr, const struct suffix_mult *suffixes) -{ - return xstrtol_range_sfx(numstr, 10, LONG_MIN, LONG_MAX, suffixes); -} - -long xatol(const char *numstr) -{ - return xstrtol_range_sfx(numstr, 10, LONG_MIN, LONG_MAX, NULL); -} - -/* Others */ - -unsigned xatou_range(const char *numstr, unsigned lower, unsigned upper) -{ - return xstrtoul_range_sfx(numstr, 10, lower, upper, NULL); -} - -unsigned xatou_sfx(const char *numstr, const struct suffix_mult *suffixes) -{ - return xstrtoul_range_sfx(numstr, 10, 0, UINT_MAX, suffixes); -} - -unsigned xatou(const char *numstr) -{ - return xatoul_range(numstr, 0, UINT_MAX); -} - -int xatoi_range(const char *numstr, int lower, int upper) -{ - return xatol_range(numstr, lower, upper); -} - -int xatoi(const char *numstr) -{ - return xatol_range(numstr, INT_MIN, INT_MAX); -} - -int xatoi_u(const char *numstr) -{ - return xatoul_range(numstr, 0, INT_MAX); -} - -uint32_t xatou32(const char *numstr) -{ - return xatoul_range(numstr, 0, 0xffffffff); -} - -uint16_t xatou16(const char *numstr) -{ - return xatoul_range(numstr, 0, 0xffff); -} diff --git a/libbb/xatonum.c b/libbb/xatonum.c new file mode 100644 index 000000000..910667c14 --- /dev/null +++ b/libbb/xatonum.c @@ -0,0 +1,91 @@ +/* vi: set sw=4 ts=4: */ +/* + * ascii-to-numbers implementations for busybox + * + * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> + * + * Licensed under GPLv2, see file LICENSE in this tarball for details. + */ + +#include "libbb.h" + +#define type long long +#define xstrtou(rest) xstrtoull##rest +#define xstrto(rest) xstrtoll##rest +#define xatou(rest) xatoull##rest +#define xato(rest) xatoll##rest +#define XSTR_UTYPE_MAX ULLONG_MAX +#define XSTR_TYPE_MAX LLONG_MAX +#define XSTR_TYPE_MIN LLONG_MIN +#define XSTR_STRTOU strtoull +#include "xatonum_template.c" +#undef type +#undef xstrtou +#undef xstrto +#undef xatou +#undef xato +#undef XSTR_UTYPE_MAX +#undef XSTR_TYPE_MAX +#undef XSTR_TYPE_MIN +#undef XSTR_STRTOU + +#if ULONG_MAX != ULLONG_MAX +#define type long +#define xstrtou(rest) xstrtoul##rest +#define xstrto(rest) xstrtol##rest +#define xatou(rest) xatoul##rest +#define xato(rest) xatol##rest +#define XSTR_UTYPE_MAX ULONG_MAX +#define XSTR_TYPE_MAX LONG_MAX +#define XSTR_TYPE_MIN LONG_MIN +#define XSTR_STRTOU strtoul +#include "xatonum_template.c" +#undef type +#undef xstrtou +#undef xstrto +#undef xatou +#undef xato +#undef XSTR_UTYPE_MAX +#undef XSTR_TYPE_MAX +#undef XSTR_TYPE_MIN +#undef XSTR_STRTOU +#endif + +#if UINT_MAX != ULONG_MAX +#define type int +#define xstrtou(rest) xstrtou##rest +#define xstrto(rest) xstrtoi##rest +#define xatou(rest) xatou##rest +#define xato(rest) xatoi##rest +#define XSTR_UTYPE_MAX UINT_MAX +#define XSTR_TYPE_MAX INT_MAX +#define XSTR_TYPE_MIN INT_MIN +#define XSTR_STRTOU strtoul +#include "xatonum_template.c" +#undef type +#undef xstrtou +#undef xstrto +#undef xatou +#undef xato +#undef XSTR_UTYPE_MAX +#undef XSTR_TYPE_MAX +#undef XSTR_TYPE_MIN +#undef XSTR_STRTOU +#endif + +/* A few special cases */ + +int xatoi_u(const char *numstr) +{ + return xatoul_range(numstr, 0, INT_MAX); +} + +uint32_t xatou32(const char *numstr) +{ + return xatoul_range(numstr, 0, 0xffffffff); +} + +uint16_t xatou16(const char *numstr) +{ + return xatoul_range(numstr, 0, 0xffff); +} diff --git a/libbb/xatonum_template.c b/libbb/xatonum_template.c new file mode 100644 index 000000000..245586a5a --- /dev/null +++ b/libbb/xatonum_template.c @@ -0,0 +1,175 @@ +/* +You need to define the following (example): + +#define type long +#define xstrtou(rest) xstrtoul##rest +#define xstrto(rest) xstrtol##rest +#define xatou(rest) xatoul##rest +#define xato(rest) xatol##rest +#define XSTR_UTYPE_MAX ULONG_MAX +#define XSTR_TYPE_MAX LONG_MAX +#define XSTR_TYPE_MIN LONG_MIN +#define XSTR_STRTOU strtoul +*/ + +unsigned type xstrtou(_range_sfx)(const char *numstr, int base, + unsigned type lower, + unsigned type upper, + const struct suffix_mult *suffixes) +{ + unsigned type r; + int old_errno; + char *e; + + /* Disallow '-' and any leading whitespace. Speed isn't critical here + * since we're parsing commandline args. So make sure we get the + * actual isspace function rather than a lnumstrer macro implementaion. */ + if ((*numstr == '-') || (isspace)(*numstr)) + goto inval; + + /* Since this is a lib function, we're not allowed to reset errno to 0. + * Doing so could break an app that is deferring checking of errno. + * So, save the old value so that we can restore it if successful. */ + old_errno = errno; + errno = 0; + r = XSTR_STRTOU(numstr, &e, base); + /* Do the initial validity check. Note: The standards do not + * guarantee that errno is set if no digits were found. So we + * must test for this explicitly. */ + if (errno || (numstr == e)) + goto inval; /* error / no digits / illegal trailing chars */ + + errno = old_errno; /* Ok. So restore errno. */ + + /* Do optional suffix parsing. Allow 'empty' suffix tables. + * Note that we also allow nul suffixes with associated multipliers, + * to allow for scaling of the numstr by some default multiplier. */ + if (suffixes) { + while (suffixes->suffix) { + if (strcmp(suffixes->suffix, e) == 0) { + if (XSTR_UTYPE_MAX / suffixes->mult < r) + goto range; /* overflow! */ + ++e; + r *= suffixes->mult; + break; + } + ++suffixes; + } + } + + /* Note: trailing space is an error. + It would be easy enough to allow though if desired. */ + if (*e) + goto inval; + /* Finally, check for range limits. */ + if (r >= lower && r <= upper) + return r; + range: + bb_error_msg_and_die("number %s is not in %llu..%llu range", + numstr, (unsigned long long)lower, + (unsigned long long)upper); + inval: + bb_error_msg_and_die("invalid number '%s'", numstr); +} + +unsigned type xstrtou(_range)(const char *numstr, int base, + unsigned type lower, + unsigned type upper) +{ + return xstrtou(_range_sfx)(numstr, base, lower, upper, NULL); +} + +unsigned type xstrtou(_sfx)(const char *numstr, int base, + const struct suffix_mult *suffixes) +{ + return xstrtou(_range_sfx)(numstr, base, 0, XSTR_UTYPE_MAX, suffixes); +} + +unsigned type xstrtou()(const char *numstr, int base) +{ + return xstrtou(_range_sfx)(numstr, base, 0, XSTR_UTYPE_MAX, NULL); +} + +unsigned type xatou(_range_sfx)(const char *numstr, + unsigned type lower, + unsigned type upper, + const struct suffix_mult *suffixes) +{ + return xstrtou(_range_sfx)(numstr, 10, lower, upper, suffixes); +} + +unsigned type xatou(_range)(const char *numstr, + unsigned type lower, + unsigned type upper) +{ + return xstrtou(_range_sfx)(numstr, 10, lower, upper, NULL); +} + +unsigned type xatou(_sfx)(const char *numstr, + const struct suffix_mult *suffixes) +{ + return xstrtou(_range_sfx)(numstr, 10, 0, XSTR_UTYPE_MAX, suffixes); +} + +unsigned type xatou()(const char *numstr) +{ + return xatou(_sfx)(numstr, NULL); +} + +/* Signed ones */ + +type xstrto(_range_sfx)(const char *numstr, int base, + type lower, + type upper, + const struct suffix_mult *suffixes) +{ + unsigned type u = XSTR_TYPE_MAX; + type r; + const char *p = numstr; + + if ((p[0] == '-') && (p[1] != '+')) { + ++p; + ++u; /* two's complement */ + } + + r = xstrtou(_range_sfx)(p, base, 0, u, suffixes); + + if (*numstr == '-') { + r = -r; + } + + if (r < lower || r > upper) { + bb_error_msg_and_die("number %s is not in %lld..%lld range", + numstr, (long long)lower, (long long)upper); + } + + return r; +} + +type xstrto(_range)(const char *numstr, int base, type lower, type upper) +{ + return xstrto(_range_sfx)(numstr, base, lower, upper, NULL); +} + +type xato(_range_sfx)(const char *numstr, + type lower, + type upper, + const struct suffix_mult *suffixes) +{ + return xstrto(_range_sfx)(numstr, 10, lower, upper, suffixes); +} + +type xato(_range)(const char *numstr, type lower, type upper) +{ + return xstrto(_range_sfx)(numstr, 10, lower, upper, NULL); +} + +type xato(_sfx)(const char *numstr, const struct suffix_mult *suffixes) +{ + return xstrto(_range_sfx)(numstr, 10, XSTR_TYPE_MIN, XSTR_TYPE_MAX, suffixes); +} + +type xato()(const char *numstr) +{ + return xstrto(_range_sfx)(numstr, 10, XSTR_TYPE_MIN, XSTR_TYPE_MAX, NULL); +} |