forked from osm2pgsql-dev/osm2pgsql
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathgeom-transform.cpp
More file actions
173 lines (138 loc) · 4.68 KB
/
Copy pathgeom-transform.cpp
File metadata and controls
173 lines (138 loc) · 4.68 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
#include "geom-transform.hpp"
#include <osmium/osm.hpp>
#include <cstring>
#include <stdexcept>
bool geom_transform_point_t::is_compatible_with(
table_column_type geom_type) const noexcept
{
return geom_type == table_column_type::point ||
geom_type == table_column_type::geometry;
}
geom::osmium_builder_t::wkbs_t
geom_transform_point_t::run(geom::osmium_builder_t *builder,
osmium::Node const &node) const
{
assert(builder);
return {builder->get_wkb_node(node.location())};
}
bool geom_transform_line_t::set_param(char const *name, lua_State *lua_state)
{
if (std::strcmp(name, "split_at") != 0) {
return false;
}
if (lua_type(lua_state, -1) != LUA_TNUMBER) {
throw std::runtime_error{
"The 'split_at' field in a geometry transformation "
"description must be a number"};
}
m_split_at = lua_tonumber(lua_state, -1);
return true;
}
bool geom_transform_line_t::is_compatible_with(
table_column_type geom_type) const noexcept
{
return geom_type == table_column_type::linestring ||
geom_type == table_column_type::multilinestring ||
geom_type == table_column_type::geometry;
}
geom::osmium_builder_t::wkbs_t
geom_transform_line_t::run(geom::osmium_builder_t *builder,
osmium::Way *way) const
{
assert(builder);
assert(way);
return builder->get_wkb_line(way->nodes(), m_split_at);
}
geom::osmium_builder_t::wkbs_t
geom_transform_line_t::run(geom::osmium_builder_t *builder,
osmium::Relation const & /*relation*/,
osmium::memory::Buffer const &buffer) const
{
assert(builder);
return builder->get_wkb_multiline(buffer, m_split_at);
}
bool geom_transform_area_t::set_param(char const *name, lua_State *lua_state)
{
if (std::strcmp(name, "multi") != 0) {
return false;
}
if (lua_type(lua_state, -1) != LUA_TBOOLEAN) {
throw std::runtime_error{
"The 'multi' field in a geometry transformation "
"description must be a boolean"};
}
m_multi = lua_toboolean(lua_state, -1);
return true;
}
bool geom_transform_area_t::is_compatible_with(
table_column_type geom_type) const noexcept
{
if (m_multi) {
return geom_type == table_column_type::multipolygon ||
geom_type == table_column_type::geometry;
}
return geom_type == table_column_type::polygon ||
geom_type == table_column_type::geometry;
}
geom::osmium_builder_t::wkbs_t
geom_transform_area_t::run(geom::osmium_builder_t *builder,
osmium::Way *way) const
{
assert(builder);
assert(way);
if (!way->is_closed()) {
return {};
}
geom::osmium_builder_t::wkbs_t result;
result.push_back(builder->get_wkb_polygon(*way));
if (result.front().empty()) {
result.clear();
}
return result;
}
geom::osmium_builder_t::wkbs_t
geom_transform_area_t::run(geom::osmium_builder_t *builder,
osmium::Relation const &relation,
osmium::memory::Buffer const &buffer) const
{
assert(builder);
return builder->get_wkb_multipolygon(relation, buffer, m_multi);
}
std::unique_ptr<geom_transform_t> create_geom_transform(char const *type)
{
if (std::strcmp(type, "point") == 0) {
return std::unique_ptr<geom_transform_t>{new geom_transform_point_t{}};
}
if (std::strcmp(type, "line") == 0) {
return std::unique_ptr<geom_transform_t>{new geom_transform_line_t{}};
}
if (std::strcmp(type, "area") == 0) {
return std::unique_ptr<geom_transform_t>{new geom_transform_area_t{}};
}
throw std::runtime_error{
"Unknown geometry transformation '{}'"_format(type)};
}
void init_geom_transform(geom_transform_t *transform, lua_State *lua_state)
{
static bool show_warning = true;
assert(transform);
assert(lua_state);
lua_pushnil(lua_state);
while (lua_next(lua_state, -2) != 0) {
char const *const field = lua_tostring(lua_state, -2);
if (field == nullptr) {
throw std::runtime_error{"All fields in geometry transformation "
"description must have string keys"};
}
if (std::strcmp(field, "create") != 0) {
if (!transform->set_param(field, lua_state) && show_warning) {
fmt::print(stderr,
"\nWarning! Ignoring unknown field '{}' in geometry "
"transformation description.\n",
field);
show_warning = false;
}
}
lua_pop(lua_state, 1);
}
}