bin/mandoc/dba_read.c

   1 /*      $Id: dba_read.c,v 1.4 2016/08/17 20:46:56 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 <regex.h>
  23 #include <stdint.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27
  28 #include "mandoc_aux.h"
  29 #include "mansearch.h"
  30 #include "dba_array.h"
  31 #include "dba.h"
  32 #include "dbm.h"
  33
  34
  35 struct dba *
  36 dba_read(const char *fname)
  37 {
  38         struct dba              *dba;
  39         struct dba_array        *page;
  40         struct dbm_page         *pdata;
  41         struct dbm_macro        *mdata;
  42         const char              *cp;
  43         int32_t                  im, ip, iv, npages;
  44
  45         if (dbm_open(fname) == -1)
  46                 return NULL;
  47         npages = dbm_page_count();
  48         dba = dba_new(npages < 128 ? 128 : npages);
  49         for (ip = 0; ip < npages; ip++) {
  50                 pdata = dbm_page_get(ip);
  51                 page = dba_page_new(dba->pages, pdata->arch,
  52                     pdata->desc, pdata->file + 1, *pdata->file);
  53                 for (cp = pdata->name; *cp != '\0'; cp = strchr(cp, '\0') + 1)
  54                         dba_page_add(page, DBP_NAME, cp);
  55                 for (cp = pdata->sect; *cp != '\0'; cp = strchr(cp, '\0') + 1)
  56                         dba_page_add(page, DBP_SECT, cp);
  57                 if ((cp = pdata->arch) != NULL)
  58                         while (*(cp = strchr(cp, '\0') + 1) != '\0')
  59                                 dba_page_add(page, DBP_ARCH, cp);
  60                 cp = pdata->file;
  61                 while (*(cp = strchr(cp, '\0') + 1) != '\0')
  62                         dba_page_add(page, DBP_FILE, cp);
  63         }
  64         for (im = 0; im < MACRO_MAX; im++) {
  65                 for (iv = 0; iv < dbm_macro_count(im); iv++) {
  66                         mdata = dbm_macro_get(im, iv);
  67                         dba_macro_new(dba, im, mdata->value, mdata->pp);
  68                 }
  69         }
  70         dbm_close();
  71         return dba;
  72 }