mirror of
https://github.com/mapbox/tippecanoe.git
synced 2025-04-20 08:41:03 +00:00
Flatten out error-handling so it isn't nested so deeply
This commit is contained in:
Eric Fischer
parent
efa3995d94
commit
3d43c5afbd
177
geojson.c
177
geojson.c
@ -49,7 +49,6 @@ void read_json(FILE *f) {
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while (1) {
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json_object *j = json_read(jp);
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if (j == NULL) {
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if (jp->error != NULL) {
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fprintf(stderr, "%d: %s\n", jp->line, jp->error);
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@ -60,104 +59,114 @@ void read_json(FILE *f) {
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}
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json_object *type = json_hash_get(j, "type");
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if (type != NULL && type->type == JSON_STRING && strcmp(type->string, "Feature") == 0) {
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json_object *geometry = json_hash_get(j, "geometry");
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if (type == NULL || type->type != JSON_STRING || strcmp(type->string, "Feature") != 0) {
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continue;
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}
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if (geometry != NULL) {
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json_object *geometry_type = json_hash_get(geometry, "type");
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if (geometry_type != NULL && geometry_type->type == JSON_STRING) {
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int t;
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json_object *geometry = json_hash_get(j, "geometry");
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if (geometry == NULL) {
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fprintf(stderr, "%d: feature with no geometry\n", jp->line);
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goto next_feature;
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}
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for (t = 0; t < GEOM_TYPES; t++) {
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if (strcmp(geometry_type->string, geometry_names[t]) == 0) {
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break;
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}
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}
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json_object *geometry_type = json_hash_get(geometry, "type");
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if (geometry_type == NULL || geometry_type->type != JSON_STRING) {
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fprintf(stderr, "%d: geometry without type string\n", jp->line);
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goto next_feature;
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}
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if (t < GEOM_TYPES) {
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json_object *properties = json_hash_get(j, "properties");
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json_object *coordinates = json_hash_get(geometry, "coordinates");
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json_object *properties = json_hash_get(j, "properties");
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if (properties == NULL || properties->type != JSON_HASH) {
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fprintf(stderr, "%d: feature without properties hash\n", jp->line);
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goto next_feature;
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}
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if (properties != NULL && properties->type == JSON_HASH) {
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char *metakey[properties->length];
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char *metaval[properties->length];
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int metatype[properties->length];
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int m = 0;
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json_object *coordinates = json_hash_get(geometry, "coordinates");
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if (coordinates == NULL || coordinates->type != JSON_ARRAY) {
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fprintf(stderr, "%d: feature without coordinates array\n", jp->line);
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goto next_feature;
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}
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int i;
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for (i = 0; i < properties->length; i++) {
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if (properties->keys[i]->type == JSON_STRING) {
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metakey[m] = properties->keys[i]->string;
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int t;
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for (t = 0; t < GEOM_TYPES; t++) {
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if (strcmp(geometry_type->string, geometry_names[t]) == 0) {
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break;
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}
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}
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if (t >= GEOM_TYPES) {
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fprintf(stderr, "%d: Can't handle geometry type %s\n", jp->line, geometry_type->string);
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goto next_feature;
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}
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if (properties->values[i] != NULL && properties->values[i]->type == JSON_STRING) {
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metatype[m] = META_STRING;
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metaval[m] = properties->values[i]->string;
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m++;
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} else if (properties->values[i] != NULL && properties->values[i]->type == JSON_NUMBER) {
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metatype[m] = META_INTEGER;
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metaval[m] = properties->values[i]->string;
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m++;
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} else {
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fprintf(stderr, "%d: Unsupported meta type\n", jp->line);
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}
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}
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}
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/* scope for variable-length arrays */
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{
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char *metakey[properties->length];
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char *metaval[properties->length];
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int metatype[properties->length];
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int m = 0;
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if (coordinates != NULL && coordinates->type == JSON_ARRAY) {
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int n;
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int i;
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for (i = 0; i < properties->length; i++) {
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if (properties->keys[i]->type == JSON_STRING) {
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metakey[m] = properties->keys[i]->string;
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if (t == GEOM_POINT) {
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n = 1;
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} else {
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n = coordinates->length;
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}
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double lon[n], lat[n];
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int ok = 1;
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if (t == GEOM_POINT) {
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if (coordinates->length >= 2) {
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lon[0] = coordinates->array[0]->number;
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lat[0] = coordinates->array[1]->number;
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} else {
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fprintf(stderr, "%d: not enough coordinates for a point\n", jp->line);
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ok = 0;
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}
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} else {
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for (i = 0; i < n; i++) {
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if (coordinates->array[i]->type == JSON_ARRAY &&
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coordinates->array[i]->length >= 2) {
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lon[i] = coordinates->array[i]->array[0]->number;
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lat[i] = coordinates->array[i]->array[1]->number;
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} else {
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fprintf(stderr, "%d: not enough coordinates within the geometry\n", jp->line);
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ok = 0;
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}
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}
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}
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if (ok) {
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// XXX encode(destdir, files, maxn, extra, xoff, pool, n, lat, lon, m, metakey, metaval, metatype);
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}
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} else {
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fprintf(stderr, "%d: feature geometry with no coordinates\n", jp->line);
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}
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} else {
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fprintf(stderr, "%d: feature with no properties\n", jp->line);
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}
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if (properties->values[i] != NULL && properties->values[i]->type == JSON_STRING) {
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metatype[m] = META_STRING;
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metaval[m] = properties->values[i]->string;
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m++;
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} else if (properties->values[i] != NULL && properties->values[i]->type == JSON_NUMBER) {
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metatype[m] = META_INTEGER;
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metaval[m] = properties->values[i]->string;
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m++;
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} else {
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fprintf(stderr, "%d: Can't handle geometry type %s\n", jp->line, geometry_type->string);
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fprintf(stderr, "%d: Unsupported meta type\n", jp->line);
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}
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} else {
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fprintf(stderr, "%d: geometry has no type\n", jp->line);
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}
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} else {
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fprintf(stderr, "%d: feature with no geometry\n", jp->line);
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}
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json_free(j);
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int n;
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if (t == GEOM_POINT) {
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n = 1;
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} else {
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n = coordinates->length;
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}
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double lon[n], lat[n];
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int ok = 1;
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if (t == GEOM_POINT) {
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if (coordinates->length >= 2) {
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lon[0] = coordinates->array[0]->number;
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lat[0] = coordinates->array[1]->number;
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} else {
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fprintf(stderr, "%d: not enough coordinates for a point\n", jp->line);
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ok = 0;
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}
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} else {
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for (i = 0; i < n; i++) {
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if (coordinates->array[i]->type == JSON_ARRAY &&
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coordinates->array[i]->length >= 2) {
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lon[i] = coordinates->array[i]->array[0]->number;
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lat[i] = coordinates->array[i]->array[1]->number;
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} else {
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fprintf(stderr, "%d: not enough coordinates within the geometry\n", jp->line);
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ok = 0;
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}
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}
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}
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if (ok) {
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for (i = 0; i < n; i++) {
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printf("%f,%f ", lat[i], lon[i]);
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}
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printf("\n");
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// XXX encode(destdir, files, maxn, extra, xoff, pool, n, lat, lon, m, metakey, metaval, metatype);
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}
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}
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next_feature:
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json_free(j);
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/* XXX check for any non-features in the outer object */
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}
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