dba_read.c

   1 /* $Id: dba_read.c,v 1.5 2020/06/22 19:20:40 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2016 Ingo Schwarze <schwarze@openbsd.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  * Function to read the mandoc database from disk into RAM,
  18  * such that data can be added or removed.
  19  * The interface is defined in "dba.h".
  20  * This file is seperate from dba.c because this also uses "dbm.h".
  21  */
  22 #include "config.h"
  23
  24 #include <regex.h>
  25 #include <stdint.h>
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 #include "mandoc_aux.h"
  31 #include "mansearch.h"
  32 #include "dba_array.h"
  33 #include "dba.h"
  34 #include "dbm.h"
  35
  36
  37 struct dba *
  38 dba_read(const char *fname)
  39 {
  40         struct dba              *dba;
  41         struct dba_array        *page;
  42         struct dbm_page         *pdata;
  43         struct dbm_macro        *mdata;
  44         const char              *cp;
  45         int32_t                  im, ip, iv, npages;
  46
  47         if (dbm_open(fname) == -1)
  48                 return NULL;
  49         npages = dbm_page_count();
  50         dba = dba_new(npages < 128 ? 128 : npages);
  51         for (ip = 0; ip < npages; ip++) {
  52                 pdata = dbm_page_get(ip);
  53                 page = dba_page_new(dba->pages, pdata->arch,
  54                     pdata->desc, pdata->file + 1, *pdata->file);
  55                 for (cp = pdata->name; *cp != '\0'; cp = strchr(cp, '\0') + 1)
  56                         dba_page_add(page, DBP_NAME, cp);
  57                 for (cp = pdata->sect; *cp != '\0'; cp = strchr(cp, '\0') + 1)
  58                         dba_page_add(page, DBP_SECT, cp);
  59                 if ((cp = pdata->arch) != NULL)
  60                         while (*(cp = strchr(cp, '\0') + 1) != '\0')
  61                                 dba_page_add(page, DBP_ARCH, cp);
  62                 cp = pdata->file;
  63                 while (*(cp = strchr(cp, '\0') + 1) != '\0')
  64                         dba_page_add(page, DBP_FILE, cp);
  65         }
  66         for (im = 0; im < MACRO_MAX; im++) {
  67                 for (iv = 0; iv < dbm_macro_count(im); iv++) {
  68                         mdata = dbm_macro_get(im, iv);
  69                         dba_macro_new(dba, im, mdata->value, mdata->pp);
  70                 }
  71         }
  72         dbm_close();
  73         return dba;
  74 }