mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-03-03 23:48:21 +00:00
675abfa029
POSIX specifies the <apostrophe> flag character for printf as formatting decimal conversions with the thousands' grouping characters specified by the current locale. Given that cosmopolitan currently has no support for obtaining the locale's grouping character, all that is required (when in the C/POSIX locale) for supporting this flag is ignoring it, and as it's already used to indicate quoting (for non-decimal conversions), all that has to be done is to avoid having it be an alias for the <space> flag so that decimal conversions don't accidentally behave as though the <space> flag has also been specified whenever the <apostrophe> flag is utilized. This patch adds this flag, as described above, along with a test for it.
259 lines
8.3 KiB
C
259 lines
8.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Gabriel Ravier │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/runtime/fenv.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/testlib/testlib.h"
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TEST(snprintf, testVeryLargePrecision) {
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char buf[512] = {};
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int i = snprintf(buf, sizeof(buf), "%.9999u", 10);
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ASSERT_EQ(9999, i);
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ASSERT_EQ(511, strlen(buf));
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}
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TEST(snprintf, testPlusFlagOnChar) {
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char buf[10] = {};
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int i = snprintf(buf, sizeof(buf), "%+c", '=');
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ASSERT_EQ(1, i);
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ASSERT_STREQ("=", buf);
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}
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TEST(snprintf, testInf) {
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char buf[10] = {};
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int i = snprintf(buf, sizeof(buf), "%f", 1.0 / 0.0);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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memset(buf, '\0', 4);
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i = snprintf(buf, sizeof(buf), "%Lf", 1.0L / 0.0L);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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memset(buf, '\0', 4);
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i = snprintf(buf, sizeof(buf), "%e", 1.0 / 0.0);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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memset(buf, '\0', 4);
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i = snprintf(buf, sizeof(buf), "%Le", 1.0L / 0.0L);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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memset(buf, '\0', 4);
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i = snprintf(buf, sizeof(buf), "%g", 1.0 / 0.0);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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memset(buf, '\0', 4);
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i = snprintf(buf, sizeof(buf), "%Lg", 1.0L / 0.0L);
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ASSERT_EQ(3, i);
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ASSERT_STREQ("inf", buf);
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for (i = 4; i < 10; ++i)
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ASSERT_EQ('\0', buf[i]);
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}
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TEST(snprintf, testUppercaseCConversionSpecifier) {
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char buf[10] = {};
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int i = snprintf(buf, sizeof(buf), "%C", L'a');
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ASSERT_EQ(1, i);
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ASSERT_STREQ("a", buf);
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i = snprintf(buf, sizeof(buf), "%C", L'☺');
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ASSERT_EQ(3, i);
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ASSERT_STREQ("☺", buf);
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}
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// Make sure we don't va_arg the wrong argument size on wide character
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// conversion specifiers
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TEST(snprintf,
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testWideCConversionSpecifierWithLotsOfArgumentsBeforeAndOneAfter) {
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char buf[20] = {};
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int i = snprintf(buf, sizeof(buf), "%d%d%d%d%d%d%d%d%lc%d", 0, 0, 0, 0, 0, 0,
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0, 0, L'x', 1);
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ASSERT_EQ(10, i);
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ASSERT_STREQ("00000000x1", buf);
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memset(buf, 0, sizeof(buf));
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i = snprintf(buf, sizeof(buf), "%d%d%d%d%d%d%d%d%C%d", 0, 0, 0, 0, 0, 0, 0, 0,
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L'x', 1);
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ASSERT_EQ(10, i);
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ASSERT_STREQ("00000000x1", buf);
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}
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static void check_n_buffer_contents(char buf[350]) {
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for (int i = 0; i < 284; ++i)
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ASSERT_EQ(' ', buf[i]);
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ASSERT_STREQ("428463", &buf[284]);
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for (int i = 290; i < 350; ++i)
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ASSERT_EQ('\0', buf[i]);
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}
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TEST(snprintf, testNConversionSpecifier) {
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char buf[350] = {};
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int n_res_int = -1;
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int i = snprintf(buf, sizeof(buf), "%286d%d%n%d", 42, 84, &n_res_int, 63);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_int);
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memset(&buf, '\0', sizeof(buf));
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long n_res_long = -1;
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i = snprintf(buf, sizeof(buf), "%286ld%ld%ln%ld", 42L, 84L, &n_res_long, 63L);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_long);
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memset(&buf, '\0', sizeof(buf));
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long long n_res_long_long = -1;
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i = snprintf(buf, sizeof(buf), "%286lld%lld%lln%lld", 42LL, 84LL,
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&n_res_long_long, 63LL);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_long_long);
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ASSERT_EQ(sizeof(short), 2);
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ASSERT_EQ(sizeof(int), 4);
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memset(&buf, '\0', sizeof(buf));
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short n_res_short = -1;
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i = snprintf(buf, sizeof(buf), "%286hd%hd%hn%hd", (42 | 0xFFFF0000),
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(84 | 0xFFFF0000), &n_res_short, (63 | 0xFFFF0000));
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_short);
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ASSERT_EQ(sizeof(unsigned char), 1);
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memset(&buf, '\0', sizeof(buf));
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signed char n_res_char = -1;
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i = snprintf(buf, sizeof(buf), "%286hhd%hhd%hhn%hhd", (42 | 0xFFFFFF00),
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(84 | 0xFFFFFF00), &n_res_char, (63 | 0xFFFFFF00));
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ((signed char)288, n_res_char);
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memset(&buf, '\0', sizeof(buf));
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ssize_t n_res_size_t = -1;
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i = snprintf(buf, sizeof(buf), "%286zd%zd%zn%zd", (ssize_t)42, (ssize_t)84,
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&n_res_size_t, (ssize_t)63);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_size_t);
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memset(&buf, '\0', sizeof(buf));
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intmax_t n_res_intmax_t = -1;
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i = snprintf(buf, sizeof(buf), "%286jd%jd%jn%jd", (intmax_t)42, (intmax_t)84,
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&n_res_intmax_t, (intmax_t)63);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_intmax_t);
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memset(&buf, '\0', sizeof(buf));
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int128_t n_res_int128_t = -1;
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i = snprintf(buf, sizeof(buf), "%286jjd%jjd%jjn%jjd", (int128_t)42,
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(int128_t)84, &n_res_int128_t, (int128_t)63);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_int128_t);
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memset(&buf, '\0', sizeof(buf));
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ptrdiff_t n_res_ptrdiff_t = -1;
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i = snprintf(buf, sizeof(buf), "%286td%td%tn%td", (ptrdiff_t)42,
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(ptrdiff_t)84, &n_res_ptrdiff_t, (ptrdiff_t)63);
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ASSERT_EQ(290, i);
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check_n_buffer_contents(buf);
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ASSERT_EQ(288, n_res_ptrdiff_t);
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}
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TEST(snprintf, testLongDoubleEConversionSpecifier) {
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char buf[20] = {};
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int i = snprintf(buf, sizeof(buf), "%Le", 1234567.8L);
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ASSERT_EQ(12, i);
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ASSERT_STREQ("1.234568e+06", buf);
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}
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TEST(snprintf, testLongDoubleRounding) {
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int previous_rounding = fegetround();
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ASSERT_EQ(0, fesetround(FE_DOWNWARD));
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char buf[20];
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int i = snprintf(buf, sizeof(buf), "%.3Lf", 4.4375L);
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ASSERT_EQ(5, i);
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ASSERT_STREQ("4.437", buf);
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i = snprintf(buf, sizeof(buf), "%.3Lf", -4.4375L);
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ASSERT_EQ(6, i);
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ASSERT_STREQ("-4.438", buf);
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ASSERT_EQ(0, fesetround(FE_TOWARDZERO));
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i = snprintf(buf, sizeof(buf), "%.3Lf", -4.4375L);
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ASSERT_EQ(6, i);
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ASSERT_STREQ("-4.437", buf);
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ASSERT_EQ(0, fesetround(previous_rounding));
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}
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TEST(snprintf, testAConversionSpecifierRounding) {
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int previous_rounding = fegetround();
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ASSERT_EQ(0, fesetround(FE_DOWNWARD));
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char buf[20];
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int i = snprintf(buf, sizeof(buf), "%.1a", 0x1.fffffp+4);
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ASSERT_EQ(8, i);
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ASSERT_STREQ("0x1.fp+4", buf);
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ASSERT_EQ(0, fesetround(FE_UPWARD));
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i = snprintf(buf, sizeof(buf), "%.1a", 0x1.f8p+4);
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ASSERT_EQ(8, i);
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ASSERT_STREQ("0x2.0p+4", buf);
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ASSERT_EQ(0, fesetround(previous_rounding));
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}
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// This test currently fails because of rounding issues
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// If that ever gets fixed, uncomment this
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/*
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TEST(snprintf, testAConversionSpecifier) {
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char buf[20];
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int i = snprintf(buf, sizeof(buf), "%.1a", 0x1.7800000000001p+4);
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ASSERT_EQ(8, i);
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ASSERT_STREQ("0x1.8p+4", buf);
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memset(buf, 0, sizeof(buf));
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i = snprintf(buf, sizeof(buf), "%.1a", 0x1.78p+4);
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ASSERT_EQ(8, i);
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ASSERT_STREQ("0x1.8p+4", buf);
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}
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*/
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TEST(snprintf, apostropheFlag) {
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char buf[20];
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int i = snprintf(buf, sizeof(buf), "%'d", 1000000);
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ASSERT_EQ(7, i);
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ASSERT_STREQ("1000000", buf);
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}
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