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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "geo_location_parser.h"
#include <limits>
#include <vespa/vespalib/data/slime/slime.h>
#include <vespa/vespalib/data/slime/json_format.h>
#include <vespa/vespalib/util/issue.h>
using vespalib::Issue;
#include <vespa/log/log.h>
LOG_SETUP(".searchlib.common.geo_location_parser");
namespace {
int getInt(const char * &p) {
uint32_t val;
bool isminus;
val = 0;
isminus = false;
if (*p == '-') {
isminus = true;
p++;
}
while (*p >= '0' && *p <= '9') {
val *= 10;
val += (*p++ - '0');
}
return isminus ? - val : val;
}
} // namespace <unnamed>
namespace search::common {
GeoLocationParser::GeoLocationParser()
: _valid(false),
_has_point(false),
_has_bounding_box(false),
_field_name(),
_x(0),
_y(0),
_x_aspect(0u),
_radius(std::numeric_limits<uint32_t>::max()),
_min_x(std::numeric_limits<int32_t>::min()),
_max_x(std::numeric_limits<int32_t>::max()),
_min_y(std::numeric_limits<int32_t>::min()),
_max_y(std::numeric_limits<int32_t>::max()),
_parseError(nullptr)
{}
bool
GeoLocationParser::correctDimensionalitySkip(const char * &p) {
if (*p == '2') {
p++;
if (*p != ',') {
_parseError = "Missing comma after 2D dimensionality";
return false;
}
p++;
return true;
}
_parseError = "Bad dimensionality spec, not 2D";
return false;
}
bool
GeoLocationParser::parseOldFormat(const std::string &locStr)
{
bool foundBoundingBox = false;
bool foundLoc = false;
const char *p = locStr.c_str();
while (*p != '\0') {
if (*p == '[') {
p++;
if (foundBoundingBox) {
_parseError = "Duplicate bounding box";
return false;
}
foundBoundingBox = true;
if (!correctDimensionalitySkip(p)) {
return false;
}
_min_x = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after minx";
return false;
}
p++;
_min_y = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after miny";
return false;
}
p++;
_max_x = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after maxx";
return false;
}
p++;
_max_y = getInt(p);
if (*p != ']') {
_parseError = "Missing ']' after maxy";
return false;
}
p++;
} else if (*p == '(') {
p++;
if (foundLoc) {
_parseError = "Duplicate location";
return false;
}
foundLoc = true;
if (!correctDimensionalitySkip(p)) {
return false;
}
_x = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after x position";
return false;
}
p++;
_y = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after y position";
return false;
}
p++;
_radius = getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after radius";
return false;
}
p++;
/* _tableID = */ (void) getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after tableID";
return false;
}
p++;
/* _rankMultiplier = */ (void) getInt(p);
if (*p != ',') {
_parseError = "Missing ',' after rank multiplier";
return false;
}
p++;
/* _rankOnlyOnDistance = */ (void) getInt(p);
if (*p == ',') {
p++;
_x_aspect = getInt(p);
if (*p != ')') {
_parseError = "Missing ')' after xAspect";
return false;
}
} else {
if (*p != ')') {
_parseError = "Missing ')' after rankOnlyOnDistance flag";
return false;
}
}
p++;
} else if (*p == ' ') {
p++;
} else {
_parseError = "Unexpected char in location spec";
return false;
}
}
_has_point = foundLoc;
_has_bounding_box = foundBoundingBox;
_valid = (_has_point || _has_bounding_box);
return _valid;
}
bool
GeoLocationParser::parseWithField(const std::string &str)
{
auto sep = str.find(':');
if (sep == std::string::npos) {
_parseError = "Location string lacks field specification";
return false;
}
_field_name = str.substr(0, sep);
std::string only_loc = str.substr(sep + 1);
return parseNoField(only_loc);
}
bool
GeoLocationParser::parseNoField(const std::string &str)
{
if (str.empty()) {
_parseError = "Location string is empty";
return false;
}
if (str[0] == '(' || str[0] == '[') {
return parseOldFormat(str);
}
if (str[0] != '{') {
_parseError = "Location string should start with '{'";
return false;
}
return parseJsonFormat(str);
}
bool
GeoLocationParser::parseJsonFormat(const std::string &str)
{
vespalib::Slime slime;
size_t decoded = vespalib::slime::JsonFormat::decode(str, slime);
if (decoded == 0) {
Issue::report("GeoLocationParser: bad location JSON: %s\n>> %s <<",
slime.get()["error_message"].asString().make_string().c_str(),
str.c_str());
_parseError = "Failed decoding JSON format location";
return false;
}
// fprintf(stderr, "parsed location JSON %s -> %s\n", str.c_str(), slime.toString().c_str());
const auto &root = slime.get();
const auto &point = root["p"];
const auto &radius = root["r"];
const auto &aspect = root["a"];
const auto &bbox = root["b"];
if (point.valid()) {
_x = point["x"].asLong();
_y = point["y"].asLong();
_has_point = true;
}
if (radius.valid()) {
_radius = radius.asLong();
}
if (aspect.valid()) {
_x_aspect = aspect.asLong();
}
if (bbox.valid()) {
_min_x = bbox["x"][0].asLong();
_max_x = bbox["x"][1].asLong();
_min_y = bbox["y"][0].asLong();
_max_y = bbox["y"][1].asLong();
_has_bounding_box = true;
}
if (_has_point || _has_bounding_box) {
_valid = true;
} else {
_parseError = "Neither point nor bounding box found";
}
return _valid;
}
GeoLocation
GeoLocationParser::getGeoLocation() const
{
if (! _valid) {
return GeoLocation();
}
GeoLocation::Aspect aspect(_x_aspect);
if (_has_bounding_box) {
GeoLocation::Range x_range{_min_x, _max_x};
GeoLocation::Range y_range{_min_y, _max_y};
GeoLocation::Box bounding_box{x_range, y_range};
if (_has_point) {
GeoLocation::Point point{_x, _y};
if (_radius == GeoLocation::radius_inf) {
return GeoLocation(bounding_box, point, aspect);
}
return GeoLocation(bounding_box, point, _radius, aspect);
}
return GeoLocation(bounding_box);
}
if (_has_point) {
GeoLocation::Point point{_x, _y};
if (_radius == GeoLocation::radius_inf) {
return GeoLocation(point, aspect);
}
return GeoLocation(point, _radius, aspect);
}
return GeoLocation();
}
} // namespace
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