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/**
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This file is part of osm2pgsql (https://osm2pgsql.org/).
*
* Copyright (C) 2006-2021 by the osm2pgsql developer community.
* For a full list of authors see the git log.
*/
#include "flex-table-column.hpp"
#include "format.hpp"
#include <algorithm>
#include <array>
#include <cctype>
#include <cstdlib>
#include <stdexcept>
#include <utility>
struct column_type_lookup
{
char const *name;
table_column_type type;
};
static std::array<column_type_lookup, 25> const column_types = {
{{"text", table_column_type::text},
{"boolean", table_column_type::boolean},
{"bool", table_column_type::boolean},
{"int2", table_column_type::int2},
{"smallint", table_column_type::int2},
{"int4", table_column_type::int4},
{"int", table_column_type::int4},
{"integer", table_column_type::int4},
{"int8", table_column_type::int8},
{"bigint", table_column_type::int8},
{"real", table_column_type::real},
{"hstore", table_column_type::hstore},
{"json", table_column_type::json},
{"jsonb", table_column_type::jsonb},
{"direction", table_column_type::direction},
{"geometry", table_column_type::geometry},
{"point", table_column_type::point},
{"linestring", table_column_type::linestring},
{"polygon", table_column_type::polygon},
{"multipoint", table_column_type::multipoint},
{"multilinestring", table_column_type::multilinestring},
{"multipolygon", table_column_type::multipolygon},
{"area", table_column_type::area},
{"id_type", table_column_type::id_type},
{"id_num", table_column_type::id_num}}};
static table_column_type
get_column_type_from_string(std::string const &type)
{
auto const it =
std::find_if(std::begin(column_types), std::end(column_types),
[&type](column_type_lookup name_type) {
return type == name_type.name;
});
if (it == std::end(column_types)) {
throw std::runtime_error{"Unknown column type '{}'."_format(type)};
}
return it->type;
}
static std::string lowercase(std::string const &str)
{
std::string result;
for (char c : str) {
result +=
static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
}
return result;
}
flex_table_column_t::flex_table_column_t(std::string name,
std::string const &type,
std::string const &sql_type)
: m_name(std::move(name)), m_type_name(lowercase(type)),
m_sql_type(sql_type),
m_type(get_column_type_from_string(m_type_name))
{}
void flex_table_column_t::set_projection(char const *projection)
{
if (!projection || *projection == '\0') {
return;
}
auto const proj = lowercase(projection);
if (proj == "merc" || proj == "mercator") {
m_srid = 3857;
return;
}
if (proj == "latlong" || proj == "latlon" || proj == "wgs84") {
m_srid = 4326;
return;
}
char *end = nullptr;
m_srid = static_cast<int>(std::strtoul(projection, &end, 10));
if (*end != '\0') {
throw std::runtime_error{
"Unknown projection: '{}'."_format(projection)};
}
}
std::string flex_table_column_t::sql_type_name() const
{
if (!m_sql_type.empty()) {
return m_sql_type;
}
switch (m_type) {
case table_column_type::text:
return "text";
case table_column_type::boolean:
return "boolean";
case table_column_type::int2:
return "int2";
case table_column_type::int4:
return "int4";
case table_column_type::int8:
return "int8";
case table_column_type::real:
return "real";
case table_column_type::hstore:
return "hstore";
case table_column_type::json:
return "json";
case table_column_type::jsonb:
return "jsonb";
case table_column_type::direction:
return "int2";
case table_column_type::geometry:
return "Geometry(GEOMETRY, {})"_format(m_srid);
case table_column_type::point:
return "Geometry(POINT, {})"_format(m_srid);
case table_column_type::linestring:
return "Geometry(LINESTRING, {})"_format(m_srid);
case table_column_type::polygon:
return "Geometry(POLYGON, {})"_format(m_srid);
case table_column_type::multipoint:
return "Geometry(MULTIPOINT, {})"_format(m_srid);
case table_column_type::multilinestring:
return "Geometry(MULTILINESTRING, {})"_format(m_srid);
case table_column_type::multipolygon:
return "Geometry(MULTIPOLYGON, {})"_format(m_srid);
case table_column_type::area:
return "real";
case table_column_type::id_type:
return "char(1)";
case table_column_type::id_num:
return "int8";
}
throw std::runtime_error{"Unknown column type."};
}
std::string flex_table_column_t::sql_modifiers() const
{
std::string modifiers;
if (m_not_null) {
modifiers += "NOT NULL ";
}
if (!modifiers.empty()) {
modifiers.resize(modifiers.size() - 1);
}
return modifiers;
}
std::string flex_table_column_t::sql_create() const
{
return "\"{}\" {} {},"_format(m_name, sql_type_name(), sql_modifiers());
}