usr.bin/ctags/print.c

   1 /*
   2  * Copyright (c) 1987, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)print.c  8.3 (Berkeley) 4/2/94
  30  * $FreeBSD: head/usr.bin/ctags/print.c 299355 2016-05-10 11:11:23Z bapt $
  31  */
  32
  33 #include <limits.h>
  34 #include <stdio.h>
  35 #include <unistd.h>
  36
  37 #include "ctags.h"
  38
  39 /*
  40  * get_line --
  41  *      get the line the token of interest occurred on,
  42  *      prepare it for printing.
  43  */
  44 void
  45 get_line(void)
  46 {
  47         long    saveftell;
  48         int     c;
  49         int     cnt;
  50         char    *cp;
  51
  52         saveftell = ftell(inf);
  53         fseek(inf, lineftell, L_SET);
  54         if (xflag)
  55                 for (cp = lbuf; GETC(!=, EOF) && c != '\n'; *cp++ = c)
  56                         continue;
  57         /*
  58          * do all processing here, so we don't step through the
  59          * line more than once; means you don't call this routine
  60          * unless you're sure you've got a keeper.
  61          */
  62         else for (cnt = 0, cp = lbuf; GETC(!=, EOF) && cnt < ENDLINE; ++cnt) {
  63                 if (c == '\\') {                /* backslashes */
  64                         if (cnt > ENDLINE - 2)
  65                                 break;
  66                         *cp++ = '\\'; *cp++ = '\\';
  67                         ++cnt;
  68                 }
  69                 else if (c == (int)searchar) {  /* search character */
  70                         if (cnt > ENDLINE - 2)
  71                                 break;
  72                         *cp++ = '\\'; *cp++ = c;
  73                         ++cnt;
  74                 }
  75                 else if (c == '\n') {   /* end of keep */
  76                         *cp++ = '$';            /* can find whole line */
  77                         break;
  78                 }
  79                 else
  80                         *cp++ = c;
  81         }
  82         *cp = EOS;
  83         fseek(inf, saveftell, L_SET);
  84 }
  85
  86 /*
  87  * put_entries --
  88  *      write out the tags
  89  */
  90 void
  91 put_entries(NODE *node)
  92 {
  93
  94         if (node->left)
  95                 put_entries(node->left);
  96         if (vflag)
  97                 printf("%s %s %d\n",
  98                     node->entry, node->file, (node->lno + 63) / 64);
  99         else if (xflag)
 100                 printf("%-16s %4d %-16s %s\n",
 101                     node->entry, node->lno, node->file, node->pat);
 102         else
 103                 fprintf(outf, "%s\t%s\t%c^%s%c\n",
 104                     node->entry, node->file, searchar, node->pat, searchar);
 105         if (node->right)
 106                 put_entries(node->right);
 107 }