/* $NetBSD: makedefs.c,v 1.8 2003/04/02 18:36:42 jsm Exp $ */

/*
 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
 * Amsterdam
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Stichting Centrum voor Wiskunde en
 * Informatica, nor the names of its contributors may be used to endorse or
 * promote products derived from this software without specific prior
 * written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef lint
static const char rcsid[] =
    "$NetBSD: makedefs.c,v 1.8 2003/04/02 18:36:42 jsm Exp $";
#endif                          /* not lint */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>

/* construct definitions of object constants */
#define LINSZ   1000
#define STRSZ   40

int             fd;
char            string[STRSZ];

static void readline(void);
static char nextchar(void);
static int skipuntil(const char *);
static int getentry(void);
static void capitalize(char *);
static int letter(int);
static int digit(int);

int main(int, char **);

int
main(argc, argv)
        int             argc;
        char          **argv;
{
        int             i = 0;
        int             propct = 0;
        char           *sp;
        if (argc != 2) {
                (void) fprintf(stderr, "usage: makedefs file\n");
                exit(1);
        }
        if ((fd = open(argv[1], O_RDONLY)) < 0) {
                perror(argv[1]);
                exit(1);
        }
        skipuntil("objects[] = {");
        while (getentry()) {
                if (!*string) {
                        i++;
                        continue;
                }
                for (sp = string; *sp; sp++)
                        if (*sp == ' ' || *sp == '\t' || *sp == '-')
                                *sp = '_';
                if (!strncmp(string, "RIN_", 4)) {
                        capitalize(string + 4);
                        printf("#define %s      u.uprops[%d].p_flgs\n",
                               string + 4, propct++);
                }
                for (sp = string; *sp; sp++)
                        capitalize(sp);
                /* avoid trouble with stupid C preprocessors */
                if (!strncmp(string, "WORTHLESS_PIECE_OF_", 19))
                        printf("/* #define %s   %d */\n", string, i);
                else
                        printf("#define %s      %d\n", string, i);
                i++;
        }
        printf("\n#define       CORPSE  DEAD_HUMAN\n");
        printf("#define LAST_GEM        (JADE+1)\n");
        printf("#define LAST_RING       %d\n", propct);
        printf("#define NROFOBJECTS     %d\n", i - 1);
        fflush(stdout);
        if (ferror(stdout)) {
                perror("standard output");
                exit(1);
        }
        exit(0);
}

char            line[LINSZ], *lp = line, *lp0 = line, *lpe = line;
int             eof;

static void
readline()
{
        int             n = read(fd, lp0, (line + LINSZ) - lp0);
        if (n < 0) {
                printf("Input error.\n");
                exit(1);
        }
        if (n == 0)
                eof++;
        lpe = lp0 + n;
}

static char
nextchar()
{
        if (lp == lpe) {
                readline();
                lp = lp0;
        }
        return ((lp == lpe) ? 0 : *lp++);
}

static int
skipuntil(s)
        const char           *s;
{
        const char *sp0;
        char *sp1;
loop:
        while (*s != nextchar())
                if (eof) {
                        printf("Cannot skipuntil %s\n", s);
                        exit(1);
                }
        if (strlen(s) > lpe - lp + 1) {
                char           *lp1, *lp2;
                lp2 = lp;
                lp1 = lp = lp0;
                while (lp2 != lpe)
                        *lp1++ = *lp2++;
                lp2 = lp0;      /* save value */
                lp0 = lp1;
                readline();
                lp0 = lp2;
                if (strlen(s) > lpe - lp + 1) {
                        printf("error in skipuntil");
                        exit(1);
                }
        }
        sp0 = s + 1;
        sp1 = lp;
        while (*sp0 && *sp0 == *sp1)
                sp0++, sp1++;
        if (!*sp0) {
                lp = sp1;
                return (1);
        }
        goto loop;
}

static int
getentry()
{
        int             inbraces = 0, inparens = 0, stringseen = 0, commaseen = 0;
        int             prefix = 0;
        char            ch;
#define NSZ     10
        char            identif[NSZ], *ip;
        string[0] = string[4] = 0;
        /*
         * read until {...} or XXX(...) followed by , skip comment and
         * #define lines deliver 0 on failure
         */
        while (1) {
                ch = nextchar();
swi:
                if (letter(ch)) {
                        ip = identif;
                        do {
                                if (ip < identif + NSZ - 1)
                                        *ip++ = ch;
                                ch = nextchar();
                        } while (letter(ch) || digit(ch));
                        *ip = 0;
                        while (ch == ' ' || ch == '\t')
                                ch = nextchar();
                        if (ch == '(' && !inparens && !stringseen)
                                if (!strcmp(identif, "WAND") ||
                                    !strcmp(identif, "RING") ||
                                    !strcmp(identif, "POTION") ||
                                    !strcmp(identif, "SCROLL"))
                                        (void) strncpy(string, identif, 3),
                                                string[3] = '_',
                                                prefix = 4;
                }
                switch (ch) {
                case '/':
                        /* watch for comment */
                        if ((ch = nextchar()) == '*')
                                skipuntil("*/");
                        goto swi;
                case '{':
                        inbraces++;
                        continue;
                case '(':
                        inparens++;
                        continue;
                case '}':
                        inbraces--;
                        if (inbraces < 0)
                                return (0);
                        continue;
                case ')':
                        inparens--;
                        if (inparens < 0) {
                                printf("too many ) ?");
                                exit(1);
                        }
                        continue;
                case '\n':
                        /* watch for #define at begin of line */
                        if ((ch = nextchar()) == '#') {
                                char            pch;
                                /* skip until '\n' not preceded by '\\' */
                                do {
                                        pch = ch;
                                        ch = nextchar();
                                } while (ch != '\n' || pch == '\\');
                                continue;
                        }
                        goto swi;
                case ',':
                        if (!inparens && !inbraces) {
                                if (prefix && !string[prefix])
                                        string[0] = 0;
                                if (stringseen)
                                        return (1);
                                printf("unexpected ,\n");
                                exit(1);
                        }
                        commaseen++;
                        continue;
                case '\'':
                        if ((ch = nextchar()) == '\\')
                                ch = nextchar();
                        if (nextchar() != '\'') {
                                printf("strange character denotation?\n");
                                exit(1);
                        }
                        continue;
                case '"':
                        {
                                char           *sp = string + prefix;
                                char            pch;
                                int             store = (inbraces || inparens)
                                && !stringseen++ && !commaseen;
                                do {
                                        pch = ch;
                                        ch = nextchar();
                                        if (store && sp < string + STRSZ)
                                                *sp++ = ch;
                                } while (ch != '"' || pch == '\\');
                                if (store)
                                        *--sp = 0;
                                continue;
                        }
                }
        }
}

static void
capitalize(sp)
        char           *sp;
{
        if ('a' <= *sp && *sp <= 'z')
                *sp += 'A' - 'a';
}

static int
letter(ch)
        char            ch;
{
        return (('a' <= ch && ch <= 'z') ||
                ('A' <= ch && ch <= 'Z'));
}

static int
digit(ch)
        char            ch;
{
        return ('0' <= ch && ch <= '9');
}