mod_tile/src/parameterize_style.cpp at master · SomeoneElseOSM/mod_tile · GitHub

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* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

* You should have received a copy of the GNU General Public License

* along with this program; If not, see http://www.gnu.org/licenses/.

#include <mapnik/datasource.hpp>

#include <mapnik/datasource_cache.hpp>

#include <mapnik/layer.hpp>

#include <mapnik/map.hpp>

#include <mapnik/params.hpp>

#include <mapnik/version.hpp>

#if MAPNIK_MAJOR_VERSION < 4

#include <boost/optional.hpp>

#endif

#include "g_logger.h"

#include "parameterize_style.hpp"

static void parameterize_map_language(mapnik::Map &m, char *parameter)

{

unsigned int i;

char *data = strdup(parameter);

char *tok;

char name_replace[256];

name_replace[0] = 0;

g_logger(G_LOG_LEVEL_DEBUG, "Internationalizing map to language parameter: %s", parameter);

tok = strtok(data, ",");

if (!tok) {

free(data);

return; // No parameterization given

}

strncat(name_replace, ", coalesce(", 255);

while (tok) {

if (strcmp(tok, "_") == 0) {

strncat(name_replace, "name,", 255);

} else {

strncat(name_replace, "tags->'name:", 255);

strncat(name_replace, tok, 255);

strncat(name_replace, "',", 255);

}

tok = strtok(NULL, ",");

}

free(data);

name_replace[strlen(name_replace) - 1] = 0;

strncat(name_replace, ") as name", 255);

for (i = 0; i < m.layer_count(); i++) {

mapnik::layer &l = m.get_layer(i);

mapnik::parameters params = l.datasource()->params();

if (params.find("table") != params.end()) {

auto table = params.get<std::string>("table");

if (table && table->find(",name") != std::string::npos) {

std::string str = *table;

size_t pos = str.find(",name");

str.replace(pos, 5, name_replace);

params["table"] = str;

l.set_datasource(mapnik::datasource_cache::instance().create(params));

}

parameterize_function_ptr init_parameterization_function(const char *function_name)

{

if (strcmp(function_name, "") == 0) {

g_logger(G_LOG_LEVEL_DEBUG, "Parameterize_style not specified (or empty string specified)");

return NULL;

} else if (strcmp(function_name, "language") == 0) {

g_logger(G_LOG_LEVEL_DEBUG, "Loading parameterization function for '%s'", function_name);

return parameterize_map_language;

} else {

g_logger(G_LOG_LEVEL_WARNING, "unknown parameterization function for '%s'", function_name);

}

return NULL;

}

mod_tile/src/parameterize_style.cpp at master · SomeoneElseOSM/mod_tile · GitHub

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