63 lines
2.9 KiB
C
63 lines
2.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/alg/arraylist.h"
|
|
#include "libc/fmt/fmt.h"
|
|
#include "libc/mem/mem.h"
|
|
#include "libc/str/str.h"
|
|
#include "tool/decode/lib/flagger.h"
|
|
|
|
struct FlagNameBuf {
|
|
size_t i, n;
|
|
char *p;
|
|
};
|
|
|
|
/**
|
|
* Formats numeric flags integer as symbolic code.
|
|
*
|
|
* @param names maps individual flags to string names in no order
|
|
* @param id is the flags
|
|
* @return NUL-terminated string that needs free()
|
|
*/
|
|
nodiscard char *recreateflags(const struct IdName *names, unsigned long id) {
|
|
struct FlagNameBuf buf = {};
|
|
char extrabuf[20];
|
|
bool first;
|
|
first = true;
|
|
for (; names->name; names++) {
|
|
if ((id == 0 && names->id == 0) ||
|
|
(id != 0 && names->id != 0 && (id & names->id) == names->id)) {
|
|
id &= ~names->id;
|
|
if (!first) {
|
|
append(&buf, "|");
|
|
} else {
|
|
first = false;
|
|
}
|
|
concat(&buf, names->name, strlen(names->name));
|
|
}
|
|
}
|
|
if (id) {
|
|
if (buf.i) append(&buf, "|");
|
|
concat(&buf, extrabuf, snprintf(extrabuf, sizeof(extrabuf), "%#x", id));
|
|
} else if (!buf.i) {
|
|
append(&buf, "0");
|
|
}
|
|
return buf.p;
|
|
}
|