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/* 
/ test_osm1.c
/
/ libreadosm Sample code
/
/ Author: Sandro Furieri a.furieri@lqt.it
/
/ ------------------------------------------------------------------------------
/ 
/ Version: MPL 1.1/GPL 2.0/LGPL 2.1
/ 
/ The contents of this file are subject to the Mozilla Public License Version
/ 1.1 (the "License"); you may not use this file except in compliance with
/ the License. You may obtain a copy of the License at
/ http://www.mozilla.org/MPL/
/ 
/ Software distributed under the License is distributed on an "AS IS" basis,
/ WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
/ for the specific language governing rights and limitations under the
/ License.
/
/ The Original Code is the ReadOSM library
/
/ The Initial Developer of the Original Code is Alessandro Furieri
/ 
/ Portions created by the Initial Developer are Copyright (C) 2012-2017
/ the Initial Developer. All Rights Reserved.
/ 
/ Contributor(s):
/ 
/ Alternatively, the contents of this file may be used under the terms of
/ either the GNU General Public License Version 2 or later (the "GPL"), or
/ the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
/ in which case the provisions of the GPL or the LGPL are applicable instead
/ of those above. If you wish to allow use of your version of this file only
/ under the terms of either the GPL or the LGPL, and not to allow others to
/ use your version of this file under the terms of the MPL, indicate your
/ decision by deleting the provisions above and replace them with the notice
/ and other provisions required by the GPL or the LGPL. If you do not delete
/ the provisions above, a recipient may use your version of this file under
/ the terms of any one of the MPL, the GPL or the LGPL.
/ 
*/

#include <stdio.h>

#include "readosm.h"

static int
print_node (const void *user_data, const readosm_node * node)
{
/* 
* printing an OSM Node (callback function) 
*
* this function is called by the OSM parser for each 
* NODE object found
*
* please note well: the passed pointer corresponds to
* a READ-ONLY object; you can can query any node-related
* value, but you cannot alter them.
*
************************************************
*
* this didactic sample will simply print the node object
* on the standard output adopting the appropriate OSM XML
* notation
*/
    char buf[128];
    int i;
    const readosm_tag *tag;

    if (user_data != NULL)
	user_data = NULL;	/* silencing stupid compiler warnings */

#if defined(_WIN32) || defined(__MINGW32__)
    /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
    sprintf (buf, "%I64d", node->id);
#else
    sprintf (buf, "%lld", node->id);
#endif
    printf ("\t<node id=\"%s\"", buf);

/*
* some individual values may be set, or may be not
* unset values are identified by the READOSM_UNDEFINED
* conventional value, and must be consequently ignored
*/
    if (node->latitude != READOSM_UNDEFINED)
	printf (" lat=\"%1.7f\"", node->latitude);
    if (node->longitude != READOSM_UNDEFINED)
	printf (" lon=\"%1.7f\"", node->longitude);
    if (node->version != READOSM_UNDEFINED)
	printf (" version=\"%d\"", node->version);
    if (node->changeset != READOSM_UNDEFINED)
      {

#if defined(_WIN32) || defined(__MINGW32__)
	  /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
	  sprintf (buf, "%I64d", node->changeset);
#else
	  sprintf (buf, "%lld", node->changeset);
#endif
	  printf (" changeset=\"%s\"", buf);
      }

/*
* unset string values are identified by a NULL pointer
* and must be consequently ignored
*/
    if (node->user != NULL)
	printf (" user=\"%s\"", node->user);
    if (node->uid != READOSM_UNDEFINED)
	printf (" uid=\"%d\"", node->uid);
    if (node->timestamp != NULL)
	printf (" timestamp=\"%s\"", node->timestamp);

/*
* the Node object may have its own tag list
* please note: this one is a variable-length list,
* and may be empty: in this case tag_count will be ZERO
*/
    if (node->tag_count == 0)
	printf (" />\n");
    else
      {
	  printf (">\n");
	  for (i = 0; i < node->tag_count; i++)
	    {
		/* we'll now print each <tag> for this node */
		tag = node->tags + i;
		printf ("\t\t<tag k=\"%s\" v=\"%s\" />\n", tag->key,
			tag->value);
	    }
	  printf ("\t</node>\n");
      }
    return READOSM_OK;
}

static int
print_way (const void *user_data, const readosm_way * way)
{
/* 
* printing an OSM Way (callback function) 
*
* this function is called by the OSM parser for each 
* WAY object found
*
* please note well: the passed pointer corresponds to
* a READ-ONLY object; you can can query any way-related
* value, but you cannot alter them.
*
************************************************
*
* this didactic sample will simply print the way object
* on the standard output adopting the appropriate OSM XML
* notation
*/
    char buf[128];
    int i;
    const readosm_tag *tag;

    if (user_data != NULL)
	user_data = NULL;	/* silencing stupid compiler warnings */

#if defined(_WIN32) || defined(__MINGW32__)
    /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
    sprintf (buf, "%I64d", way->id);
#else
    sprintf (buf, "%lld", way->id);
#endif
    printf ("\t<way id=\"%s\"", buf);

/*
* some individual values may be set, or may be not
* unset values are identified by the READOSM_UNDEFINED
* conventional value, and must be consequently ignored
*/
    if (way->version != READOSM_UNDEFINED)
	printf (" version=\"%d\"", way->version);
    if (way->changeset != READOSM_UNDEFINED)
      {
#if defined(_WIN32) || defined(__MINGW32__)
	  /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
	  sprintf (buf, "%I64d", way->changeset);
#else
	  sprintf (buf, "%lld", way->changeset);
#endif
	  printf (" changeset=\"%s\"", buf);
      }

/*
* unset string values are identified by a NULL pointer
* and must be consequently ignored
*/
    if (way->user != NULL)
	printf (" user=\"%s\"", way->user);
    if (way->uid != READOSM_UNDEFINED)
	printf (" uid=\"%d\"", way->uid);
    if (way->timestamp != NULL)
	printf (" timestamp=\"%s\"", way->timestamp);

/*
* the Way object may have a noderefs-list and a tag-list
* please note: these are variable-length lists, and may 
* be empty: in this case the corresponding item count 
* will be ZERO
*/
    if (way->tag_count == 0 && way->node_ref_count == 0)
	printf (" />\n");
    else
      {
	  printf (">\n");
	  for (i = 0; i < way->node_ref_count; i++)
	    {
		/* we'll now print each <nd ref> for this way */
#if defined(_WIN32) || defined(__MINGW32__)
		/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
		sprintf (buf, "%I64d", *(way->node_refs + i));
#else
		sprintf (buf, "%lld", *(way->node_refs + i));
#endif
		printf ("\t\t<nd ref=\"%s\" />\n", buf);
	    }
	  for (i = 0; i < way->tag_count; i++)
	    {
		/* we'll now print each <tag> for this way */
		tag = way->tags + i;
		printf ("\t\t<tag k=\"%s\" v=\"%s\" />\n", tag->key,
			tag->value);
	    }
	  printf ("\t</way>\n");
      }
    return READOSM_OK;
}

static int
print_relation (const void *user_data, const readosm_relation * relation)
{
/* 
* printing an OSM Relation (callback function) 
*
* this function is called by the OSM parser for each 
* RELATION object found
*
* please note well: the passed pointer corresponds to
* a READ-ONLY object; you can can query any relation-related
* value, but you cannot alter them.
*
************************************************
*
* this didactic sample will simply print the relation object
* on the standard output adopting the appropriate OSM XML
* notation
*/
    char buf[128];
    int i;
    const readosm_member *member;
    const readosm_tag *tag;

    if (user_data != NULL)
	user_data = NULL;	/* silencing stupid compiler warnings */

#if defined(_WIN32) || defined(__MINGW32__)
    /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
    sprintf (buf, "%I64d", relation->id);
#else
    sprintf (buf, "%lld", relation->id);
#endif
    printf ("\t<relation id=\"%s\"", buf);

/*
* some individual values may be set, or may be not
* unset values are identified by the READOSM_UNDEFINED
* conventional value, and must be consequently ignored
*/
    if (relation->version != READOSM_UNDEFINED)
	printf (" version=\"%d\"", relation->version);
    if (relation->changeset != READOSM_UNDEFINED)
      {
#if defined(_WIN32) || defined(__MINGW32__)
	  /* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
	  sprintf (buf, "%I64d", relation->changeset);
#else
	  sprintf (buf, "%lld", relation->changeset);
#endif
	  printf (" changeset=\"%s\"", buf);
      }

/*
* unset string values are identified by a NULL pointer
* and must be consequently ignored
*/
    if (relation->user != NULL)
	printf (" user=\"%s\"", relation->user);
    if (relation->uid != READOSM_UNDEFINED)
	printf (" uid=\"%d\"", relation->uid);
    if (relation->timestamp != NULL)
	printf (" timestamp=\"%s\"", relation->timestamp);

/*
* the Relation object may have a member-list and a tag-list
* please note: these are variable-length lists, and may 
* be empty: in this case the corresponding item count 
* will be ZERO
*/
    if (relation->tag_count == 0 && relation->member_count == 0)
	printf (" />\n");
    else
      {
	  printf (">\n");
	  for (i = 0; i < relation->member_count; i++)
	    {
		/* we'll now print each <member> for this way */
		member = relation->members + i;
#if defined(_WIN32) || defined(__MINGW32__)
		/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
		sprintf (buf, "%I64d", member->id);
#else
		sprintf (buf, "%lld", member->id);
#endif
		/* any <member> may be of "node", "way" or "relation" type */
		switch (member->member_type)
		  {
		  case READOSM_MEMBER_NODE:
		      printf ("\t\t<member type=\"node\" ref=\"%s\"", buf);
		      break;
		  case READOSM_MEMBER_WAY:
		      printf ("\t\t<member type=\"way\" ref=\"%s\"", buf);
		      break;
		  case READOSM_MEMBER_RELATION:
		      printf ("\t\t<member type=\"relation\" ref=\"%s\"", buf);
		      break;
		  default:
		      printf ("\t\t<member ref=\"%s\"", buf);
		      break;
		  };
		if (member->role != NULL)
		    printf (" role=\"%s\" />\n", member->role);
		else
		    printf (" />\n");
	    }
	  for (i = 0; i < relation->tag_count; i++)
	    {
		/* we'll now print each <tag> for this way */
		tag = relation->tags + i;
		printf ("\t\t<tag k=\"%s\" v=\"%s\" />\n", tag->key,
			tag->value);
	    }
	  printf ("\t</relation>\n");
      }
    return READOSM_OK;
}

int
main (int argc, char *argv[])
{
    const void *osm_handle;
    int ret;

    if (argc != 2)
      {
	  fprintf (stderr, "usage: test_osm1 path-to-OSM-file\n");
	  return -1;
      }

/*
* STEP #1: opening the OSM file
* this can indifferently be an OSM XML encoded file (.osm)
* or an OSM Protocol Buffer encoded file (.pbf)
* the library will transparently perform any required
* action in both cases.
*/
    ret = readosm_open (argv[1], &osm_handle);
    if (ret != READOSM_OK)
      {
	  fprintf (stderr, "OPEN error: %d\n", ret);
	  goto stop;
      }

/*
* STEP #2: parsing the OSM file
* this task is unbelievably simple
*
* you are simply required to pass the appropriate
* pointers for callback funtions respectively intended
* to process Node-objects, Way-objects and Relation-objects
*
* the library will then parse the whole input file, calling
* the appropriate callback handling function for each OSM object
* found: please see the callback functions implementing code
* to better understand how it works
*
* important notice: in this first example we'll not use at
* all the USER_DATA pointer. so the second arg will simply
* be (const void *)0 [i.e. NULL]
*/
    ret =
	readosm_parse (osm_handle, (const void *) 0, print_node, print_way,
		       print_relation);
    if (ret != READOSM_OK)
      {
	  fprintf (stderr, "PARSE error: %d\n", ret);
	  goto stop;
      }

    fprintf (stderr, "Ok, OSM input file successfully parsed\n");

  stop:
/*
* STEP #3: closing the OSM file
* this will release any internal memory allocation
*/
    readosm_close (osm_handle);
    return 0;
}