regularize str -> num convertors
This commit is contained in:
Denis Vlasenko
parent
809a6e3104
commit
ed836cdc30
@ -315,40 +315,7 @@ struct suffix_mult {
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const char *suffix;
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unsigned mult;
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};
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unsigned long long xstrtoull(const char *numstr, int base);
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unsigned long long xatoull(const char *numstr);
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unsigned long xstrtoul_range_sfx(const char *numstr, int base,
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unsigned long lower,
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unsigned long upper,
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const struct suffix_mult *suffixes);
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unsigned long xstrtoul_range(const char *numstr, int base,
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unsigned long lower,
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unsigned long upper);
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unsigned long xstrtoul_sfx(const char *numstr, int base,
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const struct suffix_mult *suffixes);
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unsigned long xstrtoul(const char *numstr, int base);
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unsigned long xatoul_range_sfx(const char *numstr,
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unsigned long lower,
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unsigned long upper,
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const struct suffix_mult *suffixes);
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unsigned long xatoul_sfx(const char *numstr,
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const struct suffix_mult *suffixes);
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unsigned long xatoul_range(const char *numstr,
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unsigned long lower,
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unsigned long upper);
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unsigned long xatoul(const char *numstr);
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long xstrtol_range_sfx(const char *numstr, int base,
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long lower,
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long upper,
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const struct suffix_mult *suffixes);
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long xstrtol_range(const char *numstr, int base, long lower, long upper);
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long xatol_range_sfx(const char *numstr,
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long lower,
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long upper,
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const struct suffix_mult *suffixes);
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long xatol_range(const char *numstr, long lower, long upper);
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long xatol_sfx(const char *numstr, const struct suffix_mult *suffixes);
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long xatol(const char *numstr);
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#include "xatonum.h"
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/* Specialized: */
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unsigned xatou_range(const char *numstr, unsigned lower, unsigned upper);
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unsigned xatou_sfx(const char *numstr, const struct suffix_mult *suffixes);
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94
include/xatonum.h
Normal file
94
include/xatonum.h
Normal file
@ -0,0 +1,94 @@
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/* vi: set sw=4 ts=4: */
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/*
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* ascii-to-numbers implementations for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*/
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/* Provides extern declarations of functions */
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#define DECLARE_STR_CONV(type, T, UT) \
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\
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unsigned type xstrto##UT##_range_sfx(const char *str, int b, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
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unsigned type xstrto##UT##_range(const char *str, int b, unsigned type l, unsigned type u); \
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unsigned type xstrto##UT##_sfx(const char *str, int b, const struct suffix_mult *sfx); \
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unsigned type xstrto##UT(const char *str, int b); \
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unsigned type xato##UT##_range_sfx(const char *str, unsigned type l, unsigned type u, const struct suffix_mult *sfx); \
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unsigned type xato##UT##_range(const char *str, unsigned type l, unsigned type u); \
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unsigned type xato##UT##_sfx(const char *str, const struct suffix_mult *sfx); \
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unsigned type xato##UT(const char *str); \
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type xstrto##T##_range_sfx(const char *str, int b, type l, type u, const struct suffix_mult *sfx) ;\
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type xstrto##T##_range(const char *str, int b, type l, type u); \
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type xato##T##_range_sfx(const char *str, type l, type u, const struct suffix_mult *sfx); \
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type xato##T##_range(const char *str, type l, type u); \
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type xato##T##_sfx(const char *str, const struct suffix_mult *sfx); \
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type xato##T(const char *str); \
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/* Unsigned long long functions always exist */
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DECLARE_STR_CONV(long long, ll, ull)
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/* Provides extern inline definitions of functions */
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/* (useful for mapping them to the type of the same width) */
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#define DEFINE_EQUIV_STR_CONV(narrow, N, W, UN, UW) \
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\
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extern inline \
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unsigned narrow xstrto##UN##_range_sfx(const char *str, int b, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
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{ return xstrto##UW##_range_sfx(str, b, l, u, sfx); } \
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extern inline \
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unsigned narrow xstrto##UN##_range(const char *str, int b, unsigned narrow l, unsigned narrow u) \
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{ return xstrto##UW##_range(str, b, l, u); } \
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extern inline \
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unsigned narrow xstrto##UN##_sfx(const char *str, int b, const struct suffix_mult *sfx) \
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{ return xstrto##UW##_sfx(str, b, sfx); } \
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extern inline \
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unsigned narrow xstrto##UN(const char *str, int b) \
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{ return xstrto##UW(str, b); } \
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extern inline \
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unsigned narrow xato##UN##_range_sfx(const char *str, unsigned narrow l, unsigned narrow u, const struct suffix_mult *sfx) \
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{ return xato##UW##_range_sfx(str, l, u, sfx); } \
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extern inline \
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unsigned narrow xato##UN##_range(const char *str, unsigned narrow l, unsigned narrow u) \
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{ return xato##UW##_range(str, l, u); } \
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extern inline \
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unsigned narrow xato##UN##_sfx(const char *str, const struct suffix_mult *sfx) \
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{ return xato##UW##_sfx(str, sfx); } \
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extern inline \
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unsigned narrow xato##UN(const char *str) \
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{ return xato##UW(str); } \
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extern inline \
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narrow xstrto##N##_range_sfx(const char *str, int b, narrow l, narrow u, const struct suffix_mult *sfx) \
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{ return xstrto##W##_range_sfx(str, b, l, u, sfx); } \
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extern inline \
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narrow xstrto##N##_range(const char *str, int b, narrow l, narrow u) \
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{ return xstrto##W##_range(str, b, l, u); } \
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extern inline \
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narrow xato##N##_range_sfx(const char *str, narrow l, narrow u, const struct suffix_mult *sfx) \
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{ return xato##W##_range_sfx(str, l, u, sfx); } \
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extern inline \
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narrow xato##N##_range(const char *str, narrow l, narrow u) \
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{ return xato##W##_range(str, l, u); } \
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extern inline \
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narrow xato##N##_sfx(const char *str, const struct suffix_mult *sfx) \
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{ return xato##W##_sfx(str, sfx); } \
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extern inline \
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narrow xato##N(const char *str) \
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{ return xato##W(str); } \
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/* If long == long long, then just map them one-to-one */
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#if ULONG_MAX == ULLONG_MAX
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DEFINE_EQUIV_STR_CONV(long, l, ll, ul, ull)
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#else
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/* Else provide extern defs */
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DECLARE_STR_CONV(long, l, ul)
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#endif
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/* Same for int -> [long] long */
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#if UINT_MAX == ULLONG_MAX
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DEFINE_EQUIV_STR_CONV(int, i, ll, u, ull)
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#elif UINT_MAX == ULONG_MAX
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DEFINE_EQUIV_STR_CONV(int, i, l, u, ul)
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#else
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DECLARE_STR_CONV(int, i, u)
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#endif
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@ -87,7 +87,7 @@ lib-y += vperror_msg.o
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lib-y += warn_ignoring_args.o
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lib-y += wfopen.o
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lib-y += wfopen_input.o
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lib-y += xatol.o
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lib-y += xatonum.o
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lib-y += xconnect.o
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lib-y += xfuncs.o
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lib-y += xgetcwd.o
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236
libbb/xatol.c
236
libbb/xatol.c
@ -1,236 +0,0 @@
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/* vi: set sw=4 ts=4: */
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/*
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* ascii-to-numbers implementations for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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unsigned long long xstrtoull(const char *numstr, int base)
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{
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unsigned long long r;
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int old_errno;
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char *e;
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if ((*numstr == '-') || (isspace)(*numstr))
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bb_error_msg_and_die("invalid number '%s'", numstr);
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old_errno = errno;
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errno = 0;
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r = strtoull(numstr, &e, base);
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if (errno || (numstr == e) || *e)
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/* Error / no digits / illegal trailing chars */
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bb_error_msg_and_die("invalid number '%s'", numstr);
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/* No error. So restore errno. */
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errno = old_errno;
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return r;
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}
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unsigned long long xatoull(const char *numstr)
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{
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return xstrtoull(numstr, 10);
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}
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unsigned long xstrtoul_range_sfx(const char *numstr, int base,
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unsigned long lower,
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unsigned long upper,
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const struct suffix_mult *suffixes)
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{
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unsigned long r;
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int old_errno;
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char *e;
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/* Disallow '-' and any leading whitespace. Speed isn't critical here
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* since we're parsing commandline args. So make sure we get the
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* actual isspace function rather than a lnumstrer macro implementaion. */
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if ((*numstr == '-') || (isspace)(*numstr))
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goto inval;
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/* Since this is a lib function, we're not allowed to reset errno to 0.
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* Doing so could break an app that is deferring checking of errno.
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* So, save the old value so that we can restore it if successful. */
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old_errno = errno;
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errno = 0;
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r = strtoul(numstr, &e, base);
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/* Do the initial validity check. Note: The standards do not
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* guarantee that errno is set if no digits were found. So we
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* must test for this explicitly. */
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if (errno || (numstr == e))
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goto inval; /* error / no digits / illegal trailing chars */
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errno = old_errno; /* Ok. So restore errno. */
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/* Do optional suffix parsing. Allow 'empty' suffix tables.
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* Note that we also allow nul suffixes with associated multipliers,
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* to allow for scaling of the numstr by some default multiplier. */
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if (suffixes) {
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while (suffixes->suffix) {
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if (strcmp(suffixes->suffix, e) == 0) {
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if (ULONG_MAX / suffixes->mult < r)
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goto range; /* overflow! */
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++e;
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r *= suffixes->mult;
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break;
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}
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++suffixes;
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}
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}
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/* Note: trailing space is an error.
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It would be easy enough to allow though if desired. */
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if (*e)
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goto inval;
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/* Finally, check for range limits. */
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if (r >= lower && r <= upper)
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return r;
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range:
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bb_error_msg_and_die("number %s is not in %lu..%lu range",
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numstr, lower, upper);
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inval:
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bb_error_msg_and_die("invalid number '%s'", numstr);
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}
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unsigned long xstrtoul_range(const char *numstr, int base,
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unsigned long lower,
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unsigned long upper)
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{
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return xstrtoul_range_sfx(numstr, base, lower, upper, NULL);
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}
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unsigned long xstrtoul_sfx(const char *numstr, int base,
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const struct suffix_mult *suffixes)
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{
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return xstrtoul_range_sfx(numstr, base, 0, ULONG_MAX, suffixes);
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}
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unsigned long xstrtoul(const char *numstr, int base)
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{
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return xstrtoul_range_sfx(numstr, base, 0, ULONG_MAX, NULL);
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}
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unsigned long xatoul_range_sfx(const char *numstr,
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unsigned long lower,
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unsigned long upper,
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const struct suffix_mult *suffixes)
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{
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return xstrtoul_range_sfx(numstr, 10, lower, upper, suffixes);
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}
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unsigned long xatoul_sfx(const char *numstr,
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const struct suffix_mult *suffixes)
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{
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return xstrtoul_range_sfx(numstr, 10, 0, ULONG_MAX, suffixes);
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}
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unsigned long xatoul_range(const char *numstr,
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unsigned long lower,
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unsigned long upper)
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{
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return xstrtoul_range_sfx(numstr, 10, lower, upper, NULL);
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}
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unsigned long xatoul(const char *numstr)
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{
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return xatoul_sfx(numstr, NULL);
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}
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/* Signed ones */
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long xstrtol_range_sfx(const char *numstr, int base,
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long lower,
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long upper,
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const struct suffix_mult *suffixes)
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{
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unsigned long u = LONG_MAX;
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long r;
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const char *p = numstr;
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if ((p[0] == '-') && (p[1] != '+')) {
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++p;
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++u; /* two's complement */
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}
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r = xstrtoul_range_sfx(p, base, 0, u, suffixes);
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if (*numstr == '-') {
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r = -r;
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}
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if (r < lower || r > upper) {
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bb_error_msg_and_die("number %s is not in %ld..%ld range",
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numstr, lower, upper);
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}
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return r;
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}
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long xstrtol_range(const char *numstr, int base, long lower, long upper)
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{
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return xstrtol_range_sfx(numstr, base, lower, upper, NULL);
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}
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long xatol_range_sfx(const char *numstr,
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long lower,
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long upper,
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const struct suffix_mult *suffixes)
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{
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return xstrtol_range_sfx(numstr, 10, lower, upper, suffixes);
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}
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long xatol_range(const char *numstr, long lower, long upper)
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{
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return xstrtol_range_sfx(numstr, 10, lower, upper, NULL);
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}
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long xatol_sfx(const char *numstr, const struct suffix_mult *suffixes)
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{
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return xstrtol_range_sfx(numstr, 10, LONG_MIN, LONG_MAX, suffixes);
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}
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long xatol(const char *numstr)
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{
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return xstrtol_range_sfx(numstr, 10, LONG_MIN, LONG_MAX, NULL);
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}
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/* Others */
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unsigned xatou_range(const char *numstr, unsigned lower, unsigned upper)
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{
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return xstrtoul_range_sfx(numstr, 10, lower, upper, NULL);
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}
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unsigned xatou_sfx(const char *numstr, const struct suffix_mult *suffixes)
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{
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return xstrtoul_range_sfx(numstr, 10, 0, UINT_MAX, suffixes);
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}
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unsigned xatou(const char *numstr)
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{
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return xatoul_range(numstr, 0, UINT_MAX);
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}
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int xatoi_range(const char *numstr, int lower, int upper)
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{
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return xatol_range(numstr, lower, upper);
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}
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int xatoi(const char *numstr)
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{
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return xatol_range(numstr, INT_MIN, INT_MAX);
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}
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int xatoi_u(const char *numstr)
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{
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return xatoul_range(numstr, 0, INT_MAX);
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}
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uint32_t xatou32(const char *numstr)
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{
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return xatoul_range(numstr, 0, 0xffffffff);
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}
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uint16_t xatou16(const char *numstr)
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{
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return xatoul_range(numstr, 0, 0xffff);
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}
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91
libbb/xatonum.c
Normal file
91
libbb/xatonum.c
Normal file
@ -0,0 +1,91 @@
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/* vi: set sw=4 ts=4: */
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/*
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* ascii-to-numbers implementations for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*
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* Licensed under GPLv2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#define type long long
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#define xstrtou(rest) xstrtoull##rest
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#define xstrto(rest) xstrtoll##rest
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#define xatou(rest) xatoull##rest
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#define xato(rest) xatoll##rest
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#define XSTR_UTYPE_MAX ULLONG_MAX
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#define XSTR_TYPE_MAX LLONG_MAX
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#define XSTR_TYPE_MIN LLONG_MIN
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#define XSTR_STRTOU strtoull
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#include "xatonum_template.c"
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#undef type
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#undef xstrtou
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#undef xstrto
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#undef xatou
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#undef xato
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#undef XSTR_UTYPE_MAX
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#undef XSTR_TYPE_MAX
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#undef XSTR_TYPE_MIN
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#undef XSTR_STRTOU
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#if ULONG_MAX != ULLONG_MAX
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#define type long
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#define xstrtou(rest) xstrtoul##rest
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#define xstrto(rest) xstrtol##rest
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#define xatou(rest) xatoul##rest
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#define xato(rest) xatol##rest
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#define XSTR_UTYPE_MAX ULONG_MAX
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#define XSTR_TYPE_MAX LONG_MAX
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#define XSTR_TYPE_MIN LONG_MIN
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#define XSTR_STRTOU strtoul
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#include "xatonum_template.c"
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#undef type
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#undef xstrtou
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#undef xstrto
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#undef xatou
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#undef xato
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#undef XSTR_UTYPE_MAX
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#undef XSTR_TYPE_MAX
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#undef XSTR_TYPE_MIN
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#undef XSTR_STRTOU
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#endif
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#if UINT_MAX != ULONG_MAX
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||||
#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);
|
||||
}
|
||||
175
libbb/xatonum_template.c
Normal file
175
libbb/xatonum_template.c
Normal file
@ -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);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user