/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2001 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include "gnu_msgfmt.h"
#include "../../lib/libc/inc/msgfmt.h"

static unsigned int
doswap(unsigned int n)
{
        unsigned int    r;

        r = (n << 24) | ((n & 0xff00) << 8) |
                ((n >> 8) & 0xff00) | (n >> 24);
        return (r);
}

struct messages *
search_msg(struct catalog *p, const char *id, unsigned int hash_val)
{
        unsigned int    i, idx, inc;
        struct messages *m;

        idx = hash_val % p->thash_size;
        inc = 1 + (hash_val % (p->thash_size - 2));
        if (!p->thash[idx])
                return (NULL);

        m = p->msg;
        for (m = p->msg; (i = p->thash[idx]) != 0;
                idx = (idx + inc) % p->thash_size) {
                if (strcmp(m[i - 1].id, id) == 0) {
                        /* found */
                        return (&m[i - 1]);
                }
        }
        return (NULL);
}

static int
msg_cmp(struct messages *m1, struct messages *m2)
{
        return (strcmp(m1->id, m2->id));
}

void
output_all_gnu_mo_files(void)
{
        struct catalog  *p, *op;
        struct messages *m;
        size_t  id_len, str_len, id_off, str_off, ids_top, strs_top;
        unsigned int    *hash_tbl;
        unsigned int    hash_size, off_msgstr_tbl, off_hashtbl;
        unsigned int    num = 0, fnum = 0, unum = 0;
        unsigned int    i, idx;
        char    *ids, *strs;
        struct msgtbl   *id_tbl, *str_tbl;
        struct gnu_msg_info     header;
        FILE    *out;

        p = catalog_head;

        while (p) {
                num += p->nmsg;
                fnum += p->fnum;
                unum += p->unum;

                if (p->header)
                        num--;

                p->msg = (struct messages *)Xrealloc(p->msg,
                        sizeof (struct messages) * p->nmsg);

                free(p->thash);
                /*
                 * Sort the message array
                 */
                qsort(p->msg, p->nmsg, sizeof (struct messages),
                        (int (*)(const void *, const void *))msg_cmp);


                hash_size = find_prime(p->nmsg);
                hash_tbl = (unsigned int *)Xcalloc(hash_size,
                        sizeof (unsigned int));


                /* Setting Header info */
                off_msgstr_tbl = sizeof (struct gnu_msg_info) +
                        p->nmsg * sizeof (struct msgtbl);
                off_hashtbl = off_msgstr_tbl +
                        p->nmsg * sizeof (struct msgtbl);

                header.magic = doswap(GNU_MAGIC);
                header.revision = doswap(GNU_REVISION);
                header.num_of_str = doswap(p->nmsg);
                header.off_msgid_tbl =
                        doswap(sizeof (struct gnu_msg_info));
                header.off_msgstr_tbl = doswap(off_msgstr_tbl);
                header.sz_hashtbl = doswap(hash_size);
                header.off_hashtbl = doswap(off_hashtbl);

                m = p->msg;

                id_len = 0;
                str_len = 0;
                for (i = 0; i < p->nmsg; i++) {
                        id_len += m[i].id_len;
                        str_len += m[i].str_len;
                }
                ids = (char *)Xmalloc(id_len);
                strs = (char *)Xmalloc(str_len);
                id_tbl = (struct msgtbl *)Xmalloc(sizeof (struct msgtbl) *
                        p->nmsg);
                str_tbl = (struct msgtbl *)Xmalloc(sizeof (struct msgtbl) *
                        p->nmsg);
                id_off = 0;
                str_off = 0;
                ids_top = off_hashtbl +
                        sizeof (unsigned int) * hash_size;
                strs_top = ids_top + id_len;
                for (i = 0; i < p->nmsg; i++) {
                        /*
                         * Set the hash table
                         */
                        idx = get_hash_index(hash_tbl, m[i].hash, hash_size);
                        hash_tbl[idx] = doswap(i + 1);

                        /*
                         * rearrange msgid and msgstr
                         */
                        id_tbl[i].len = doswap(m[i].id_len - 1);
                        str_tbl[i].len = doswap(m[i].str_len - 1);
                        id_tbl[i].offset = doswap(id_off + ids_top);
                        str_tbl[i].offset = doswap(str_off + strs_top);
                        (void) memcpy(ids + id_off, m[i].id, m[i].id_len);
                        (void) memcpy(strs + str_off, m[i].str, m[i].str_len);
                        id_off += m[i].id_len;
                        str_off += m[i].str_len;
                        free(m[i].id);
                        free(m[i].str);
                }

                if ((out = fopen(p->fname, "w")) == NULL) {
                        error(gettext(ERR_OPEN_FAILED), p->fname);
                        /* NOTREACHED */
                }

                /* writing header */
                (void) fwrite(&header, sizeof (struct gnu_msg_info),
                        1, out);

                /* writing msgid offset table */
                (void) fwrite(id_tbl, sizeof (struct msgtbl),
                        p->nmsg, out);
                /* writing msgstr offset table */
                (void) fwrite(str_tbl, sizeof (struct msgtbl),
                        p->nmsg, out);
                /* writing hash table */
                (void) fwrite(hash_tbl, sizeof (unsigned int),
                        hash_size, out);
                /* writing msgid table */
                (void) fwrite(ids, id_len, 1, out);
                /* writing msgstr table */
                (void) fwrite(strs, str_len, 1, out);

                (void) fclose(out);
                free(p->fname);
                free(p->msg);
                free(id_tbl);
                free(str_tbl);
                free(hash_tbl);
                free(ids);
                free(strs);
                op = p->next;
                free(p);
                p = op;
        }
        if (verbose_flag) {
                diag(gettext(DIAG_RESULTS), num, fnum, unum);
        }
}