/*      $OpenBSD: print.c,v 1.8 2017/10/11 07:26:40 anton Exp $ */
/*      $NetBSD: print.c,v 1.4 1995/09/27 01:06:58 jtc Exp $    */

/*
 * Copyright (c) 1987, 1993, 1994
 *      The Regents of the University of California.  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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 */

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

#include "ctags.h"

/*
 * get_line --
 *      get the line the token of interest occurred on,
 *      prepare it for printing.
 */
void
get_line(void)
{
        long    saveftell;
        int     c;
        int     cnt;
        char    *cp;

        saveftell = ftell(inf);
        (void)fseek(inf, lineftell, SEEK_SET);
        if (xflag)
                for (cp = lbuf; GETC(!=, EOF) && c != '\n'; *cp++ = c)
                        continue;
        /*
         * do all processing here, so we don't step through the
         * line more than once; means you don't call this routine
         * unless you're sure you've got a keeper.
         */
        else for (cnt = 0, cp = lbuf; GETC(!=, EOF) && cnt < ENDLINE; ++cnt) {
                if (c == '\\') {                /* backslashes */
                        if (cnt > ENDLINE - 2)
                                break;
                        *cp++ = '\\'; *cp++ = '\\';
                        ++cnt;
                }
                else if (c == (int)searchar) {  /* search character */
                        if (cnt > ENDLINE - 2)
                                break;
                        *cp++ = '\\'; *cp++ = c;
                        ++cnt;
                }
                else if (c == '\n') {   /* end of keep */
                        *cp++ = '$';            /* can find whole line */
                        break;
                }
                else
                        *cp++ = c;
        }
        *cp = EOS;
        (void)fseek(inf, saveftell, SEEK_SET);
}

/*
 * put_entries --
 *      write out the tags
 */
void
put_entries(NODE *node)
{

        if (node->left)
                put_entries(node->left);
        if (vflag)
                printf("%s %s %d\n",
                    node->entry, node->file, (node->lno + 63) / 64);
        else if (xflag)
                printf("%-16s %4d %-16s %s\n",
                    node->entry, node->lno, node->file, node->pat);
        else
                fprintf(outf, "%s\t%s\t%c^%s%c\n",
                    node->entry, node->file, searchar, node->pat, searchar);
        if (node->right)
                put_entries(node->right);
}