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/**
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* Navit, a modular navigation system.
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* Copyright (C) 2005-2011 Navit Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <math.h>
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#include <unistd.h>
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#include "maptool.h"
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int
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osm_xml_get_attribute(char *xml, char *attribute, char *buffer, int buffer_size)
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{
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int len=strlen(attribute);
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char *pos,*i,s,attr[len+2];
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strcpy(attr, attribute);
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strcpy(attr+len, "=");
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pos=strstr(xml, attr);
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if (! pos)
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return 0;
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pos+=len+1;
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s=*pos++;
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if (! s)
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return 0;
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i=strchr(pos, s);
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if (! i)
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return 0;
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if (i - pos > buffer_size) {
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fprintf(stderr,"Buffer overflow %ld vs %d\n", (long)(i-pos), buffer_size);
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return 0;
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}
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strncpy(buffer, pos, i-pos);
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buffer[i-pos]='\0';
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return 1;
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}
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static struct entity {
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char *entity;
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char c;
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} entities[]= {
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{""",'"'},
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{"'",'\''},
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{"&",'&'},
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{"<",'<'},
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{">",'>'},
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{""",'"'},
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{"'",'\''},
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{"&",'&'},
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{"<",'<'},
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{">",'>'},
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{"{",'{'},
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{"}",'}'},
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};
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void
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osm_xml_decode_entities(char *buffer)
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{
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char *pos=buffer;
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int i,len,found;
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while ((pos=strchr(pos, '&'))) {
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found=0;
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for (i = 0 ; i < sizeof(entities)/sizeof(struct entity); i++) {
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len=strlen(entities[i].entity);
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if (!strncmp(pos, entities[i].entity, len)) {
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*pos=entities[i].c;
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memmove(pos+1, pos+len, strlen(pos+len)+1);
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found=1;
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break;
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}
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}
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pos++;
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}
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}
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static int
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parse_tag(char *p)
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{
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char k_buffer[BUFFER_SIZE];
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char v_buffer[BUFFER_SIZE];
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if (!osm_xml_get_attribute(p, "k", k_buffer, BUFFER_SIZE))
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return 0;
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if (!osm_xml_get_attribute(p, "v", v_buffer, BUFFER_SIZE))
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return 0;
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osm_xml_decode_entities(v_buffer);
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osm_add_tag(k_buffer, v_buffer);
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return 1;
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}
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static int
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parse_node(char *p)
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{
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char id_buffer[BUFFER_SIZE];
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char lat_buffer[BUFFER_SIZE];
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char lon_buffer[BUFFER_SIZE];
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if (!osm_xml_get_attribute(p, "id", id_buffer, BUFFER_SIZE))
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return 0;
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if (!osm_xml_get_attribute(p, "lat", lat_buffer, BUFFER_SIZE))
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return 0;
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if (!osm_xml_get_attribute(p, "lon", lon_buffer, BUFFER_SIZE))
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return 0;
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osm_add_node(atoll(id_buffer), atof(lat_buffer), atof(lon_buffer));
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return 1;
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}
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static int
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parse_way(char *p)
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{
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char id_buffer[BUFFER_SIZE];
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if (!osm_xml_get_attribute(p, "id", id_buffer, BUFFER_SIZE))
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return 0;
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osm_add_way(atoll(id_buffer));
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return 1;
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}
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static int
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parse_relation(char *p)
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{
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char id_buffer[BUFFER_SIZE];
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if (!osm_xml_get_attribute(p, "id", id_buffer, BUFFER_SIZE))
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return 0;
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osm_add_relation(atoll(id_buffer));
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return 1;
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}
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static int
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parse_member(char *p)
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{
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char type_buffer[BUFFER_SIZE];
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char ref_buffer[BUFFER_SIZE];
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char role_buffer[BUFFER_SIZE];
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int type;
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if (!osm_xml_get_attribute(p, "type", type_buffer, BUFFER_SIZE))
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return 0;
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if (!osm_xml_get_attribute(p, "ref", ref_buffer, BUFFER_SIZE))
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return 0;
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if (!osm_xml_get_attribute(p, "role", role_buffer, BUFFER_SIZE))
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return 0;
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if (!strcmp(type_buffer,"node"))
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type=1;
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else if (!strcmp(type_buffer,"way"))
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type=2;
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else if (!strcmp(type_buffer,"relation"))
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type=3;
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else {
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//fprintf(stderr,"Unknown type %s\n",type_buffer);
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type=0;
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}
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osm_add_member(type, atoll(ref_buffer), role_buffer);
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return 1;
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}
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static int
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parse_nd(char *p)
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{
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char ref_buffer[BUFFER_SIZE];
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if (!osm_xml_get_attribute(p, "ref", ref_buffer, BUFFER_SIZE))
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return 0;
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osm_add_nd(atoll(ref_buffer));
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return 1;
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}
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int
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map_collect_data_osm(FILE *in, struct maptool_osm *osm)
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{
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int size=BUFFER_SIZE;
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char buffer[size];
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char *p;
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sig_alrm(0);
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while (fgets(buffer, size, in)) {
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p=strchr(buffer,'<');
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if (! p) {
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//fprintf(stderr,"WARNING: wrong line %s\n", buffer);
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continue;
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}
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if (!strncmp(p, "<?xml ",6)) {
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} else if (!strncmp(p, "<osm ",5)) {
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} else if (!strncmp(p, "<bound ",7)) {
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} else if (!strncmp(p, "<node ",6)) {
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if (!parse_node(p))
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{
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//fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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processed_nodes++;
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} else if (!strncmp(p, "<tag ",5)) {
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if (!parse_tag(p))
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{
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//fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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} else if (!strncmp(p, "<way ",5)) {
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if (!parse_way(p))
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{
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//fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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processed_ways++;
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} else if (!strncmp(p, "<nd ",4)) {
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if (!parse_nd(p))
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{
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//fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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} else if (!strncmp(p, "<relation ",10)) {
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if (!parse_relation(p))
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{
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fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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processed_relations++;
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} else if (!strncmp(p, "<member ",8)) {
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if (!parse_member(p))
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{
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//fprintf(stderr,"WARNING: failed to parse %s\n", buffer);
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}
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} else if (!strncmp(p, "</node>",7)) {
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osm_end_node(osm);
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} else if (!strncmp(p, "</way>",6)) {
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osm_end_way(osm);
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} else if (!strncmp(p, "</relation>",11)) {
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osm_end_relation(osm);
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} else if (!strncmp(p, "</osm>",6)) {
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} else {
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// fprintf(stderr,"WARNING: unknown tag in %s\n", buffer);
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}
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}
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sig_alrm(0);
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sig_alrm_end();
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return 1;
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}
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