usr.bin/ctags/print.c

   1 /*      $NetBSD: print.c,v 1.10 2009/07/13 19:05:40 roy Exp $   */
   2
   3 /*
   4  * Copyright (c) 1987, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if defined(__RCSID) && !defined(lint)
  38 #if 0
  39 static char sccsid[] = "@(#)print.c     8.3 (Berkeley) 4/2/94";
  40 #else
  41 __RCSID("$NetBSD: print.c,v 1.10 2009/07/13 19:05:40 roy Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <limits.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <unistd.h>
  50
  51 #include "ctags.h"
  52
  53 /*
  54  * get_line --
  55  *      get the line the token of interest occurred on,
  56  *      prepare it for printing.
  57  */
  58 void
  59 get_line(void)
  60 {
  61         long    saveftell;
  62         int     c;
  63         int     cnt;
  64         char    *cp;
  65
  66         saveftell = ftell(inf);
  67         (void)fseek(inf, lineftell, SEEK_SET);
  68         if (xflag)
  69                 for (cp = lbuf; GETC(!=, '\n'); *cp++ = c)
  70                         continue;
  71         /*
  72          * do all processing here, so we don't step through the
  73          * line more than once; means you don't call this routine
  74          * unless you're sure you've got a keeper.
  75          */
  76         else for (cnt = 0, cp = lbuf; GETC(!=, EOF) && cnt < ENDLINE; ++cnt) {
  77                 if (c == '\\') {                /* backslashes */
  78                         if (cnt > ENDLINE - 2)
  79                                 break;
  80                         *cp++ = '\\'; *cp++ = '\\';
  81                         ++cnt;
  82                 }
  83                 else if (c == (int)searchar) {  /* search character */
  84                         if (cnt > ENDLINE - 2)
  85                                 break;
  86                         *cp++ = '\\'; *cp++ = c;
  87                         ++cnt;
  88                 }
  89                 else if (c == '\n') {   /* end of keep */
  90                         *cp++ = '$';            /* can find whole line */
  91                         break;
  92                 }
  93                 else
  94                         *cp++ = c;
  95         }
  96         *cp = EOS;
  97         (void)fseek(inf, saveftell, SEEK_SET);
  98 }
  99
 100 /*
 101  * put_entries --
 102  *      write out the tags
 103  */
 104 void
 105 put_entries(NODE *node)
 106 {
 107
 108         if (node->left)
 109                 put_entries(node->left);
 110         if (vflag)
 111                 printf("%s %s %d\n",
 112                     node->entry, node->file, (node->lno + 63) / 64);
 113         else if (xflag)
 114                 printf("%-16s%4d %-16s %s\n",
 115                     node->entry, node->lno, node->file, node->pat);
 116         else
 117                 fprintf(outf, "%s\t%s\t%c^%s%c\n",
 118                     node->entry, node->file, searchar, node->pat, searchar);
 119         if (node->right)
 120                 put_entries(node->right);
 121 }