https://github.com/mapbox/tippecanoe
Tip revision: 4030cc7c58d9c26d2bb59350fa5c317fc68a87e9 authored by Eric Fischer on 25 May 2016, 18:53:57 UTC
Merge pull request #245 from mapbox/inline-meta2
Merge pull request #245 from mapbox/inline-meta2
Tip revision: 4030cc7
tile-join.cpp
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sqlite3.h>
#include <limits.h>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <zlib.h>
#include <math.h>
#include "mvt.hpp"
#include "projection.hpp"
#include "pool.hpp"
#include "mbtiles.hpp"
#include "geometry.hpp"
std::string dequote(std::string s);
struct stats {
int minzoom;
int maxzoom;
double midlat, midlon;
double minlat, minlon, maxlat, maxlon;
};
void handle(std::string message, int z, unsigned x, unsigned y, std::vector<std::set<type_and_string> > &file_keys, std::vector<std::string> &layernames, int *nlayers, sqlite3 *outdb, std::vector<std::string> &header, std::map<std::string, std::vector<std::string> > &mapping, std::set<std::string> &exclude, int ifmatched) {
mvt_tile tile;
mvt_tile outtile;
int features_added = 0;
if (!tile.decode(message)) {
fprintf(stderr, "Couldn't decompress tile %d/%u/%u\n", z, x, y);
exit(EXIT_FAILURE);
}
for (size_t l = 0; l < tile.layers.size(); l++) {
mvt_layer &layer = tile.layers[l];
mvt_layer outlayer;
outlayer.name = layer.name;
outlayer.version = layer.version;
outlayer.extent = layer.extent;
const char *ln = layer.name.c_str();
int ll;
for (ll = 0; ll < *nlayers; ll++) {
if (strcmp(layernames[ll].c_str(), ln) == 0) {
break;
}
}
if (ll == *nlayers) {
file_keys.push_back(std::set<type_and_string>());
layernames.push_back(std::string(ln));
*nlayers = ll + 1;
}
for (size_t f = 0; f < layer.features.size(); f++) {
mvt_feature feat = layer.features[f];
mvt_feature outfeature;
int matched = 0;
for (size_t t = 0; t + 1 < feat.tags.size(); t += 2) {
const char *key = layer.keys[feat.tags[t]].c_str();
mvt_value &val = layer.values[feat.tags[t + 1]];
std::string value;
int type = -1;
if (val.type == mvt_string) {
value = val.string_value;
type = VT_STRING;
} else if (val.type == mvt_int) {
aprintf(&value, "%lld", (long long) val.numeric_value.int_value);
type = VT_NUMBER;
} else if (val.type == mvt_double) {
aprintf(&value, "%g", val.numeric_value.double_value);
type = VT_NUMBER;
} else if (val.type == mvt_float) {
aprintf(&value, "%g", val.numeric_value.float_value);
type = VT_NUMBER;
} else if (val.type == mvt_bool) {
aprintf(&value, "%s", val.numeric_value.bool_value ? "true" : "false");
type = VT_BOOLEAN;
} else if (val.type == mvt_sint) {
aprintf(&value, "%lld", (long long) val.numeric_value.sint_value);
type = VT_NUMBER;
} else if (val.type == mvt_uint) {
aprintf(&value, "%llu", (long long) val.numeric_value.uint_value);
type = VT_NUMBER;
} else {
continue;
}
if (type < 0) {
continue;
}
if (exclude.count(std::string(key)) == 0) {
type_and_string tas;
tas.string = std::string(key);
tas.type = type;
file_keys[ll].insert(tas);
outlayer.tag(outfeature, layer.keys[feat.tags[t]], val);
}
if (header.size() > 0 && strcmp(key, header[0].c_str()) == 0) {
std::map<std::string, std::vector<std::string> >::iterator ii = mapping.find(value);
if (ii != mapping.end()) {
std::vector<std::string> fields = ii->second;
matched = 1;
for (size_t i = 1; i < fields.size(); i++) {
std::string joinkey = header[i];
std::string joinval = fields[i];
int attr_type = VT_STRING;
if (joinval.size() > 0) {
if (joinval[0] == '"') {
joinval = dequote(joinval);
} else if ((joinval[0] >= '0' && joinval[0] <= '9') || joinval[0] == '-') {
attr_type = VT_NUMBER;
}
}
const char *sjoinkey = joinkey.c_str();
if (exclude.count(joinkey) == 0) {
type_and_string tas;
tas.string = std::string(sjoinkey);
tas.type = attr_type;
file_keys[ll].insert(tas);
outlayer.tag(outfeature, layer.keys[feat.tags[t]], val);
mvt_value outval;
if (attr_type == VT_STRING) {
outval.type = mvt_string;
outval.string_value = joinval;
} else {
outval.type = mvt_double;
outval.numeric_value.double_value = atof(joinval.c_str());
}
outlayer.tag(outfeature, joinkey, outval);
}
}
}
}
}
if (matched || !ifmatched) {
outfeature.type = feat.type;
outfeature.geometry = feat.geometry;
features_added++;
outlayer.features.push_back(outfeature);
}
}
outtile.layers.push_back(outlayer);
}
if (features_added == 0) {
return;
}
std::string compressed = outtile.encode();
if (compressed.size() > 500000) {
fprintf(stderr, "Tile %d/%u/%u size is %lld, >500000. Skipping this tile\n.", z, x, y, (long long) compressed.size());
return;
}
mbtiles_write_tile(outdb, z, x, y, compressed.data(), compressed.size());
}
double min(double a, double b) {
if (a < b) {
return a;
} else {
return b;
}
}
double max(double a, double b) {
if (a > b) {
return a;
} else {
return b;
}
}
void decode(char *fname, char *map, std::vector<std::set<type_and_string> > &file_keys, std::vector<std::string> &layernames, int *nlayers, sqlite3 *outdb, struct stats *st, std::vector<std::string> &header, std::map<std::string, std::vector<std::string> > &mapping, std::set<std::string> &exclude, int ifmatched, std::string &attribution) {
sqlite3 *db;
if (sqlite3_open(fname, &db) != SQLITE_OK) {
fprintf(stderr, "%s: %s\n", fname, sqlite3_errmsg(db));
exit(EXIT_FAILURE);
}
const char *sql = "SELECT zoom_level, tile_column, tile_row, tile_data from tiles;";
sqlite3_stmt *stmt;
if (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL) != SQLITE_OK) {
fprintf(stderr, "%s: select failed: %s\n", fname, sqlite3_errmsg(db));
exit(EXIT_FAILURE);
}
while (sqlite3_step(stmt) == SQLITE_ROW) {
long long zoom = sqlite3_column_int(stmt, 0);
long long x = sqlite3_column_int(stmt, 1);
long long y = sqlite3_column_int(stmt, 2);
y = (1LL << zoom) - 1 - y;
int len = sqlite3_column_bytes(stmt, 3);
const char *s = (const char *) sqlite3_column_blob(stmt, 3);
fprintf(stderr, "%lld/%lld/%lld \r", zoom, x, y);
handle(std::string(s, len), zoom, x, y, file_keys, layernames, nlayers, outdb, header, mapping, exclude, ifmatched);
}
sqlite3_finalize(stmt);
if (sqlite3_prepare_v2(db, "SELECT value from metadata where name = 'minzoom'", -1, &stmt, NULL) == SQLITE_OK) {
if (sqlite3_step(stmt) == SQLITE_ROW) {
int minzoom = sqlite3_column_int(stmt, 0);
st->minzoom = min(st->minzoom, minzoom);
}
sqlite3_finalize(stmt);
}
if (sqlite3_prepare_v2(db, "SELECT value from metadata where name = 'maxzoom'", -1, &stmt, NULL) == SQLITE_OK) {
if (sqlite3_step(stmt) == SQLITE_ROW) {
int maxzoom = sqlite3_column_int(stmt, 0);
st->maxzoom = max(st->maxzoom, maxzoom);
}
sqlite3_finalize(stmt);
}
if (sqlite3_prepare_v2(db, "SELECT value from metadata where name = 'center'", -1, &stmt, NULL) == SQLITE_OK) {
if (sqlite3_step(stmt) == SQLITE_ROW) {
const unsigned char *s = sqlite3_column_text(stmt, 0);
sscanf((char *) s, "%lf,%lf", &st->midlon, &st->midlat);
}
sqlite3_finalize(stmt);
}
if (sqlite3_prepare_v2(db, "SELECT value from metadata where name = 'attribution'", -1, &stmt, NULL) == SQLITE_OK) {
if (sqlite3_step(stmt) == SQLITE_ROW) {
attribution = std::string((char *) sqlite3_column_text(stmt, 0));
}
sqlite3_finalize(stmt);
}
if (sqlite3_prepare_v2(db, "SELECT value from metadata where name = 'bounds'", -1, &stmt, NULL) == SQLITE_OK) {
if (sqlite3_step(stmt) == SQLITE_ROW) {
const unsigned char *s = sqlite3_column_text(stmt, 0);
double minlon, minlat, maxlon, maxlat;
sscanf((char *) s, "%lf,%lf,%lf,%lf", &minlon, &minlat, &maxlon, &maxlat);
st->minlon = min(minlon, st->minlon);
st->maxlon = max(maxlon, st->maxlon);
st->minlat = min(minlat, st->minlat);
st->maxlat = max(maxlat, st->maxlat);
}
sqlite3_finalize(stmt);
}
if (sqlite3_close(db) != SQLITE_OK) {
fprintf(stderr, "%s: could not close database: %s\n", fname, sqlite3_errmsg(db));
exit(EXIT_FAILURE);
}
}
void usage(char **argv) {
fprintf(stderr, "Usage: %s [-f] [-i] [-c joins.csv] [-x exclude ...] -o new.mbtiles source.mbtiles ...\n", argv[0]);
exit(EXIT_FAILURE);
}
#define MAXLINE 10000 /* XXX */
std::vector<std::string> split(char *s) {
std::vector<std::string> ret;
while (*s && *s != '\n') {
char *start = s;
int within = 0;
for (; *s && *s != '\n'; s++) {
if (*s == '"') {
within = !within;
}
if (*s == ',' && !within) {
break;
}
}
std::string v = std::string(start, s - start);
ret.push_back(v);
if (*s == ',') {
s++;
}
}
return ret;
}
std::string dequote(std::string s) {
std::string out;
for (size_t i = 0; i < s.size(); i++) {
if (s[i] == '"') {
if (i + 1 < s.size() && s[i + 1] == '"') {
out.push_back('"');
}
} else {
out.push_back(s[i]);
}
}
return out;
}
void readcsv(char *fn, std::vector<std::string> &header, std::map<std::string, std::vector<std::string> > &mapping) {
FILE *f = fopen(fn, "r");
if (f == NULL) {
perror(fn);
exit(EXIT_FAILURE);
}
char s[MAXLINE];
if (fgets(s, MAXLINE, f)) {
header = split(s);
for (size_t i = 0; i < header.size(); i++) {
header[i] = dequote(header[i]);
}
}
while (fgets(s, MAXLINE, f)) {
std::vector<std::string> line = split(s);
if (line.size() > 0) {
line[0] = dequote(line[0]);
}
for (size_t i = 0; i < line.size() && i < header.size(); i++) {
// printf("putting %s\n", line[0].c_str());
mapping.insert(std::pair<std::string, std::vector<std::string> >(line[0], line));
}
}
fclose(f);
}
int main(int argc, char **argv) {
char *outfile = NULL;
char *csv = NULL;
int force = 0;
int ifmatched = 0;
std::vector<std::string> header;
std::map<std::string, std::vector<std::string> > mapping;
std::set<std::string> exclude;
extern int optind;
extern char *optarg;
int i;
while ((i = getopt(argc, argv, "fo:c:x:i")) != -1) {
switch (i) {
case 'o':
outfile = optarg;
break;
case 'f':
force = 1;
break;
case 'i':
ifmatched = 1;
break;
case 'c':
if (csv != NULL) {
fprintf(stderr, "Only one -c for now\n");
exit(EXIT_FAILURE);
}
csv = optarg;
readcsv(csv, header, mapping);
break;
case 'x':
exclude.insert(std::string(optarg));
break;
default:
usage(argv);
}
}
if (argc - optind < 1 || outfile == NULL) {
usage(argv);
}
if (force) {
unlink(outfile);
}
sqlite3 *outdb = mbtiles_open(outfile, argv, 0);
struct stats st;
memset(&st, 0, sizeof(st));
st.minzoom = st.minlat = st.minlon = INT_MAX;
st.maxzoom = st.maxlat = st.maxlon = INT_MIN;
std::vector<std::set<type_and_string> > file_keys;
std::vector<std::string> layernames;
int nlayers = 0;
std::string attribution;
for (i = optind; i < argc; i++) {
decode(argv[i], csv, file_keys, layernames, &nlayers, outdb, &st, header, mapping, exclude, ifmatched, attribution);
}
mbtiles_write_metadata(outdb, outfile, layernames, st.minzoom, st.maxzoom, st.minlat, st.minlon, st.maxlat, st.maxlon, st.midlat, st.midlon, file_keys, nlayers, 0, attribution.size() != 0 ? attribution.c_str() : NULL);
mbtiles_close(outdb, argv);
return 0;
}