mirror of
https://github.com/jart/cosmopolitan.git
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868af3f950
You can now use the hardest fastest and most dangerous language there is with Cosmopolitan. So far about 75% of LLVM libcxx has been added. A few breaking changes needed to be made to help this go smoothly. - Rename nothrow to dontthrow - Rename nodiscard to dontdiscard - Add some libm functions, e.g. lgamma, nan, etc. - Change intmax_t from int128 to int64 like everything else - Introduce %jjd formatting directive for int128_t - Introduce strtoi128(), strtou128(), etc. - Rename bsrmax() to bsr128() Some of the templates that should be working currently are std::vector, std::string, std::map, std::set, std::deque, etc.
60 lines
2.9 KiB
C
60 lines
2.9 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/alg/arraylist2.internal.h"
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#include "libc/fmt/fmt.h"
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#include "libc/mem/mem.h"
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#include "libc/str/str.h"
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#include "tool/decode/lib/flagger.h"
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/**
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* Formats numeric flags integer as symbolic code.
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*
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* @param names maps individual flags to string names in no order
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* @param id is the flags
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* @return NUL-terminated string that needs free()
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*/
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dontdiscard char *RecreateFlags(const struct IdName *names, unsigned long id) {
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bool first;
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size_t bufi, bufn;
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char *bufp, extrabuf[20];
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bufi = 0;
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bufn = 0;
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bufp = NULL;
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first = true;
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for (; names->name; names++) {
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if ((id == 0 && names->id == 0) ||
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(id != 0 && names->id != 0 && (id & names->id) == names->id)) {
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id &= ~names->id;
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if (!first) {
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APPEND(&bufp, &bufi, &bufn, "|");
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} else {
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first = false;
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}
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CONCAT(&bufp, &bufi, &bufn, names->name, strlen(names->name));
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}
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}
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if (id) {
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if (bufi) APPEND(&bufp, &bufi, &bufn, "|");
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CONCAT(&bufp, &bufi, &bufn, extrabuf,
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snprintf(extrabuf, sizeof(extrabuf), "%#x", id));
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} else if (!bufi) {
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APPEND(&bufp, &bufi, &bufn, "0");
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}
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return bufp;
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}
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