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https://github.com/jart/cosmopolitan.git
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4e56d89dcd
- Get ASAN working on Windows. - Deleting directories and then recreating them with the same name in a short period of time appears to be a no-no on Windows. - There's no reason to call FlushFileBuffers on close() for pipes, and it's harmful since it might block indefinitely for no good reason.
98 lines
3.9 KiB
C
98 lines
3.9 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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│ 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/calls/ntspawn.h"
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#include "libc/mem/mem.h"
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#include "libc/str/str.h"
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#include "libc/str/thompike.h"
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#include "libc/str/utf16.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Converts System V argv to Windows-style command line.
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*
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* Escaping is performed and it's designed to round-trip with
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* GetDosArgv() or GetDosArgv(). This function does NOT escape
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* command interpreter syntax, e.g. $VAR (sh), %VAR% (cmd).
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*
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* @param cmdline is output buffer
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* @param prog is used as argv[0]
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* @param argv is an a NULL-terminated array of UTF-8 strings
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* @return freshly allocated lpCommandLine or NULL w/ errno
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* @kudos Daniel Colascione for teaching how to quote
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* @see libc/runtime/dosargv.c
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*/
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textwindows noasan int mkntcmdline(char16_t cmdline[ARG_MAX], const char *prog,
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char *const argv[]) {
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char *arg;
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uint64_t w;
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wint_t x, y;
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int slashes, n;
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size_t i, j, k;
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bool needsquote;
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char16_t cbuf[2];
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for (arg = prog, k = i = 0; arg; arg = argv[++i]) {
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if (i) {
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cmdline[k++] = u' ';
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if (k == ARG_MAX) return e2big();
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}
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needsquote = !arg[0] || arg[strcspn(arg, " \t\n\v\"")];
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if (needsquote) {
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cmdline[k++] = u'"';
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if (k == ARG_MAX) return e2big();
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}
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for (j = 0;;) {
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if (needsquote) {
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slashes = 0;
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while (arg[j] && arg[j] == '\\') slashes++, j++;
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slashes <<= 1;
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if (arg[j] == '"') slashes++;
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while (slashes--) {
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cmdline[k++] = u'\\';
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if (k == ARG_MAX) return e2big();
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}
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}
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x = arg[j++] & 0xff;
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if (x >= 0300) {
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n = ThomPikeLen(x);
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x = ThomPikeByte(x);
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while (--n) {
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if ((y = arg[j++] & 0xff)) {
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x = ThomPikeMerge(x, y);
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} else {
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x = 0;
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break;
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}
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}
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}
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if (!x) break;
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if (!i && x == '/') x = '\\';
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w = EncodeUtf16(x);
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do {
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cmdline[k++] = w;
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if (k == ARG_MAX) return e2big();
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} while ((w >>= 16));
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}
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if (needsquote) {
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cmdline[k++] = u'"';
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if (k == ARG_MAX) return e2big();
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}
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}
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cmdline[k] = u'\0';
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return 0;
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}
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