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geocsv.cpp
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geocsv.cpp
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#include <stdlib.h>
#include <algorithm>
#include "geocsv.hpp"
#include "mvt.hpp"
#include "serial.hpp"
#include "projection.hpp"
#include "main.hpp"
#include "text.hpp"
#include "csv.hpp"
#include "milo/dtoa_milo.h"
#include "options.hpp"
#include "errors.hpp"
void parse_geocsv(std::vector<struct serialization_state> &sst, std::string fname, int layer, std::string layername) {
FILE *f;
if (fname.size() == 0) {
f = stdin;
} else {
f = fopen(fname.c_str(), "r");
if (f == NULL) {
perror(fname.c_str());
exit(EXIT_OPEN);
}
}
std::string s;
std::vector<std::string> header;
ssize_t latcol = -1, loncol = -1;
if ((s = csv_getline(f)).size() > 0) {
std::string err = check_utf8(s);
if (err != "") {
fprintf(stderr, "%s: %s\n", fname.c_str(), err.c_str());
exit(EXIT_UTF8);
}
header = csv_split(s.c_str());
for (size_t i = 0; i < header.size(); i++) {
header[i] = csv_dequote(header[i]);
std::string lower(header[i]);
std::transform(lower.begin(), lower.end(), lower.begin(), ::tolower);
if (lower == "y" || lower == "lat" || (lower.find("latitude") != std::string::npos)) {
latcol = i;
}
if (lower == "x" || lower == "lon" || lower == "lng" || lower == "long" || (lower.find("longitude") != std::string::npos)) {
loncol = i;
}
}
}
if (latcol < 0 || loncol < 0) {
fprintf(stderr, "%s: Can't find \"lat\" and \"lon\" columns\n", fname.c_str());
exit(EXIT_CSV);
}
size_t seq = 0;
while ((s = csv_getline(f)).size() > 0) {
std::string err = check_utf8(s);
if (err != "") {
fprintf(stderr, "%s: %s\n", fname.c_str(), err.c_str());
exit(EXIT_UTF8);
}
seq++;
std::vector<std::string> line = csv_split(s.c_str());
if (line.size() != header.size()) {
fprintf(stderr, "%s:%zu: Mismatched column count: %zu in line, %zu in header\n", fname.c_str(), seq + 1, line.size(), header.size());
exit(EXIT_CSV);
}
if (line[loncol].empty() || line[latcol].empty()) {
static int warned = 0;
if (!warned) {
fprintf(stderr, "%s:%zu: null geometry (additional not reported)\n", fname.c_str(), seq + 1);
warned = 1;
}
continue;
}
double lon = atof(line[loncol].c_str());
double lat = atof(line[latcol].c_str());
long long x, y;
projection->project(lon, lat, 32, &x, &y);
drawvec dv;
dv.push_back(draw(VT_MOVETO, x, y));
std::vector<std::string> full_keys;
std::vector<serial_val> full_values;
for (size_t i = 0; i < line.size(); i++) {
if (i != (size_t) latcol && i != (size_t) loncol) {
line[i] = csv_dequote(line[i]);
serial_val sv;
if (is_number(line[i])) {
sv.type = mvt_double;
} else if (line[i].size() == 0 && prevent[P_EMPTY_CSV_COLUMNS]) {
sv.type = mvt_null;
line[i] = "null";
} else {
sv.type = mvt_string;
}
sv.s = line[i];
full_keys.push_back(header[i]);
full_values.push_back(sv);
}
}
serial_feature sf;
sf.layer = layer;
sf.layername = layername;
sf.segment = sst[0].segment;
sf.has_id = false;
sf.id = 0;
sf.has_tippecanoe_minzoom = false;
sf.has_tippecanoe_maxzoom = false;
sf.feature_minzoom = false;
sf.seq = *(sst[0].layer_seq);
sf.geometry = dv;
sf.t = 1; // POINT
sf.full_keys = full_keys;
sf.full_values = full_values;
serialize_feature(&sst[0], sf);
}
if (fname.size() != 0) {
if (fclose(f) != 0) {
perror("fclose");
exit(EXIT_CLOSE);
}
}
}