/* $OpenBSD: attributes.c,v 1.12 2025/12/01 08:14:29 nicm Exp $ */

/*
 * Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <string.h>

#include "tmux.h"

const char *
attributes_tostring(int attr)
{
        static char     buf[512];
        size_t          len;

        if (attr == 0)
                return ("none");

        len = xsnprintf(buf, sizeof buf, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
            (attr & GRID_ATTR_CHARSET) ? "acs," : "",
            (attr & GRID_ATTR_BRIGHT) ? "bright," : "",
            (attr & GRID_ATTR_DIM) ? "dim," : "",
            (attr & GRID_ATTR_UNDERSCORE) ? "underscore," : "",
            (attr & GRID_ATTR_BLINK)? "blink," : "",
            (attr & GRID_ATTR_REVERSE) ? "reverse," : "",
            (attr & GRID_ATTR_HIDDEN) ? "hidden," : "",
            (attr & GRID_ATTR_ITALICS) ? "italics," : "",
            (attr & GRID_ATTR_STRIKETHROUGH) ? "strikethrough," : "",
            (attr & GRID_ATTR_UNDERSCORE_2) ? "double-underscore," : "",
            (attr & GRID_ATTR_UNDERSCORE_3) ? "curly-underscore," : "",
            (attr & GRID_ATTR_UNDERSCORE_4) ? "dotted-underscore," : "",
            (attr & GRID_ATTR_UNDERSCORE_5) ? "dashed-underscore," : "",
        (attr & GRID_ATTR_OVERLINE) ? "overline," : "",
            (attr & GRID_ATTR_NOATTR) ? "noattr," : "");
        if (len > 0)
                buf[len - 1] = '\0';

        return (buf);
}

int
attributes_fromstring(const char *str)
{
        const char      delimiters[] = " ,|";
        int             attr;
        size_t          end;
        u_int           i;
        struct {
                const char      *name;
                int              attr;
        } table[] = {
                { "acs", GRID_ATTR_CHARSET },
                { "bright", GRID_ATTR_BRIGHT },
                { "bold", GRID_ATTR_BRIGHT },
                { "dim", GRID_ATTR_DIM },
                { "underscore", GRID_ATTR_UNDERSCORE },
                { "blink", GRID_ATTR_BLINK },
                { "reverse", GRID_ATTR_REVERSE },
                { "hidden", GRID_ATTR_HIDDEN },
                { "italics", GRID_ATTR_ITALICS },
                { "strikethrough", GRID_ATTR_STRIKETHROUGH },
                { "double-underscore", GRID_ATTR_UNDERSCORE_2 },
                { "curly-underscore", GRID_ATTR_UNDERSCORE_3 },
                { "dotted-underscore", GRID_ATTR_UNDERSCORE_4 },
                { "dashed-underscore", GRID_ATTR_UNDERSCORE_5 },
                { "overline", GRID_ATTR_OVERLINE }
        };

        if (*str == '\0' || strcspn(str, delimiters) == 0)
                return (-1);
        if (strchr(delimiters, str[strlen(str) - 1]) != NULL)
                return (-1);

        if (strcasecmp(str, "default") == 0 || strcasecmp(str, "none") == 0)
                return (0);

        attr = 0;
        do {
                end = strcspn(str, delimiters);
                for (i = 0; i < nitems(table); i++) {
                        if (end != strlen(table[i].name))
                                continue;
                        if (strncasecmp(str, table[i].name, end) == 0) {
                                attr |= table[i].attr;
                                break;
                        }
                }
                if (i == nitems(table))
                        return (-1);
                str += end + strspn(str + end, delimiters);
        } while (*str != '\0');

        return (attr);
}