Hi,
I've written a cli tool to merge JSON files (containing JSON
array) in the current folder as a single JSON file.
My algorithm:
1. Create a string to store the output JSON array as a string,
2. read each file
3. read each object in JSON array from input file
4. append the string representation of each JSON object in a
string
5. Parse the result string as JSON
6. Save string representation of point 6 above.
**Question**
While this works, is there a more concise way than this?
Thank you for your time.
```d
module combinejsonv2;
import std.file;
import std.stdio;
import std.json;
import std.array;
import std.algorithm.searching;
void main()
{
// can't I use this for JSON array?
JSONValue jj;
// create a string opening [ for JSON array
string stringResult = "[";
foreach (string filename; dirEntries(".", "*.json",
SpanMode.shallow))
{
// if filename contains 'output' in it, ignore
if(canFind(filename, "output")) {
std.stdio.writeln("ignoring: " ~ filename);
continue;
}
// show status to console
std.stdio.writeln("processing: " ~ filename);
// read JSON file as string
string content = std.file.readText(filename);
// parse as JSON
JSONValue j = parseJSON(content);
foreach (JSONValue jsonObject; j.array) {
// Combine objects from files into a single list of
JSON object
// std.stdio.writeln(jsonObject.toPrettyString);
stringResult ~= jsonObject.toString;
stringResult ~= ",";
}
}
// create closing ] for the JSON array
stringResult ~= "]";
// parse the string as a JSON object
JSONValue jsonResult = parseJSON(stringResult);
// write to file
std.file.write("output-combined.json",
jsonResult.toPrettyString);
}
```
