diff options
| -rw-r--r-- | coreutils/printf.c | 118 |
1 files changed, 65 insertions, 53 deletions
diff --git a/coreutils/printf.c b/coreutils/printf.c index b0a48cd..d4f1de9 100644 --- a/coreutils/printf.c +++ b/coreutils/printf.c @@ -75,13 +75,13 @@ static int multiconvert(const char *arg, void *result, converter convert) return 0; } -static void FAST_FUNC conv_strtoul(const char *arg, void *result) +static void FAST_FUNC conv_strtoull(const char *arg, void *result) { - *(unsigned long*)result = bb_strtoul(arg, NULL, 0); + *(unsigned long long*)result = bb_strtoull(arg, NULL, 0); } -static void FAST_FUNC conv_strtol(const char *arg, void *result) +static void FAST_FUNC conv_strtoll(const char *arg, void *result) { - *(long*)result = bb_strtol(arg, NULL, 0); + *(long long*)result = bb_strtoll(arg, NULL, 0); } static void FAST_FUNC conv_strtod(const char *arg, void *result) { @@ -96,17 +96,17 @@ static void FAST_FUNC conv_strtod(const char *arg, void *result) } /* Callers should check errno to detect errors */ -static unsigned long my_xstrtoul(const char *arg) +static unsigned long long my_xstrtoull(const char *arg) { - unsigned long result; - if (multiconvert(arg, &result, conv_strtoul)) + unsigned long long result; + if (multiconvert(arg, &result, conv_strtoull)) result = 0; return result; } -static long my_xstrtol(const char *arg) +static long long my_xstrtoll(const char *arg) { - long result; - if (multiconvert(arg, &result, conv_strtol)) + long long result; + if (multiconvert(arg, &result, conv_strtoll)) result = 0; return result; } @@ -134,7 +134,7 @@ static void print_direc(char *format, unsigned fmt_length, int field_width, int precision, const char *argument) { - long lv; + long long llv; double dv; char saved; char *have_prec, *have_width; @@ -153,42 +153,44 @@ static void print_direc(char *format, unsigned fmt_length, break; case 'd': case 'i': - lv = my_xstrtol(argument); + llv = my_xstrtoll(argument); print_long: /* if (errno) return; - see comment at the top */ if (!have_width) { if (!have_prec) - printf(format, lv); + printf(format, llv); else - printf(format, precision, lv); + printf(format, precision, llv); } else { if (!have_prec) - printf(format, field_width, lv); + printf(format, field_width, llv); else - printf(format, field_width, precision, lv); + printf(format, field_width, precision, llv); } break; case 'o': case 'u': case 'x': case 'X': - lv = my_xstrtoul(argument); + llv = my_xstrtoull(argument); /* cheat: unsigned long and long have same width, so... */ goto print_long; case 's': - /* Are char* and long the same? (true for most arches) */ - if (sizeof(argument) == sizeof(lv)) { - lv = (long)(ptrdiff_t)argument; + /* Are char* and long long the same? */ + if (sizeof(argument) == sizeof(llv)) { + llv = (long long)(ptrdiff_t)argument; goto print_long; - } else { /* Hope compiler will optimize it out */ + } else { + /* Hope compiler will optimize it out by moving call + * instruction after the ifs... */ if (!have_width) { if (!have_prec) - printf(format, argument); + printf(format, argument, /*unused:*/ argument, argument); else - printf(format, precision, argument); + printf(format, precision, argument, /*unused:*/ argument); } else { if (!have_prec) - printf(format, field_width, argument); + printf(format, field_width, argument, /*unused:*/ argument); else printf(format, field_width, precision, argument); } @@ -286,38 +288,48 @@ static char **print_formatted(char *f, char **argv) } } } - /* Remove size modifiers - "%Ld" would try to printf - * long long, we pass long, and it spews garbage */ - if ((*f | 0x20) == 'l' || *f == 'h' || *f == 'z') { + + /* Remove "lLhz" size modifiers, repeatedly. + * bash does not like "%lld", but coreutils + * would happily take even "%Llllhhzhhzd"! + * We will be permissive like coreutils */ + while ((*f | 0x20) == 'l' || *f == 'h' || *f == 'z') { overlapping_strcpy(f, f + 1); } -//FIXME: actually, the same happens with bare "%d": -//it printfs an int, but we pass long! -//What saves us is that on most arches stack slot -//is pointer-sized -> long-sized -> ints are promoted to longs -// for variadic functions -> printf("%d", int_v) is in reality -// indistinqushable from printf("%d", long_v) -> -// since printf("%d", int_v) works, printf("%d", long_v) has to work. -//But "clean" solution would be to add "l" to d,i,o,x,X. -//Probably makes sense to go all the way to "ll" then. -//Coreutils support long long-sized arguments. - - /* needed - try "printf %" without it */ - if (!strchr("diouxXfeEgGcs", *f)) { - bb_error_msg("%s: invalid format", direc_start); - /* causes main() to exit with error */ - return saved_argv - 1; - } - ++direc_length; - if (*argv) { - print_direc(direc_start, direc_length, field_width, - precision, *argv); - ++argv; - } else { - print_direc(direc_start, direc_length, field_width, - precision, ""); + /* Add "ll" if integer modifier, then print */ + { + static const char format_chars[] ALIGN1 = "diouxXfeEgGcs"; + char *p = strchr(format_chars, *f); + /* needed - try "printf %" without it */ + if (p == NULL) { + bb_error_msg("%s: invalid format", direc_start); + /* causes main() to exit with error */ + return saved_argv - 1; + } + ++direc_length; + if (p - format_chars <= 5) { + /* it is one of "diouxX" */ + p = xmalloc(direc_length + 3); + memcpy(p, direc_start, direc_length); + p[direc_length + 1] = p[direc_length - 1]; + p[direc_length - 1] = 'l'; + p[direc_length] = 'l'; + //bb_error_msg("<%s>", p); + direc_length += 2; + direc_start = p; + } else { + p = NULL; + } + if (*argv) { + print_direc(direc_start, direc_length, field_width, + precision, *argv); + ++argv; + } else { + print_direc(direc_start, direc_length, field_width, + precision, ""); + } + free(p); } - /* if (errno) return saved_argv - 1; */ break; case '\\': if (*++f == 'c') { |