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https://github.com/jart/cosmopolitan.git
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9e3e985ae5
Here's some screenshots of an emulator tui program that was compiled on Linux, then scp'd it to Windows, Mac, and FreeBSD. https://justine.storage.googleapis.com/blinkenlights-cmdexe.png https://justine.storage.googleapis.com/blinkenlights-imac.png https://justine.storage.googleapis.com/blinkenlights-freebsd.png https://justine.storage.googleapis.com/blinkenlights-lisp.png How is this even possible that we have a nontrivial ui binary that just works on Mac, Windows, Linux, and BSD? Surely a first ever achievement. Fixed many bugs. Bootstrapped John McCarthy's metacircular evaluator on bare metal in half the size of Altair BASIC (about 2.5kb) and ran it in emulator for fun and profit.
103 lines
4.6 KiB
C
103 lines
4.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/runtime/getdosenviron.h"
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#include "libc/str/str.h"
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#include "libc/testlib/testlib.h"
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TEST(GetDosEnviron, testOneVariable) {
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#define kEnv u"A=Und wird die Welt auch in Flammen stehen\0"
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size_t max = 2;
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size_t size = sizeof(kEnv) >> 1;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(1, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("A=Und wird die Welt auch in Flammen stehen", envp[0]);
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EXPECT_EQ(NULL, envp[1]);
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ASSERT_BINEQ(u"A=Und wird die Welt auch in Flammen stehen ", block);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testTwoVariables) {
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#define kEnv \
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(u"𐌰𐌱𐌲𐌳=Und wird die Welt auch in Flammen stehen\0" \
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u"𐌴𐌵𐌶𐌷=Wir werden wieder auferstehen\0")
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size_t max = 3;
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size_t size = 1024;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(2, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("𐌰𐌱𐌲𐌳=Und wird die Welt auch in Flammen stehen", envp[0]);
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EXPECT_STREQ("𐌴𐌵𐌶𐌷=Wir werden wieder auferstehen", envp[1]);
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EXPECT_EQ(NULL, envp[2]);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testOverrun_truncatesWithGrace) {
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#define kEnv u"A=Und wird die Welt auch in Flammen stehen\0"
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size_t max = 2;
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size_t size = sizeof(kEnv) >> 2;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(1, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("A=Und wird die Welt ", envp[0]);
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EXPECT_EQ(NULL, envp[1]);
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ASSERT_BINEQ(u"A=Und wird die Welt ", block);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testEmpty_doesntTouchMemory) {
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EXPECT_EQ(0, GetDosEnviron(u"", NULL, 0, NULL, 0));
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_1) {
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size_t max = 1;
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(0, GetDosEnviron(u"", NULL, 0, envp, max));
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EXPECT_EQ(NULL, envp[0]);
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tfree(envp);
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_2) {
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size_t size = 1;
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char *block = tmalloc(size);
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EXPECT_EQ(0, GetDosEnviron(u"", block, size, NULL, 0));
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EXPECT_BINEQ(u" ", block);
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tfree(block);
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_3) {
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size_t size = 2;
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char *block = tmalloc(size);
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EXPECT_EQ(0, GetDosEnviron(u"", block, size, NULL, 0));
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EXPECT_BINEQ(u" ", block);
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tfree(block);
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}
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