Provide a way to dump schema to stdout.

[kalekseev]

It can be useful if you need schema.graphql instead of json eg:
graphql_schema --schema project.schema --out=- | node bin/json-to-gql.js --src - --out project/schema.graphql

[coveralls]

Coverage decreased (-0.08%) to 94.508% when pulling 85527e1 on kalekseev:schema-to-stdout into f4bbae2 on graphql-python:master.

[coveralls]

Coverage decreased (-0.08%) to 94.508% when pulling 85527e1 on kalekseev:schema-to-stdout into f4bbae2 on graphql-python:master.

[andykenward]

@kalekseev where does the code in json-to-gql.js come from? Is it a custom script?

I need to convert the output to .graphql

[kalekseev]

@andykenward

django-admin graphql_schema --out=/tmp/schema.json
node json-to-gql.js --src /tmp/schema.json --out schema.graphql

json-to-gql.js

const { buildClientSchema, printSchema } = require('graphql');
const fs = require('fs');

let src = null;
let out = null;

process.argv.forEach(function(val, index, array) {
  if (val === 'src') {
    src = array[index + 1];
  }
  switch (val) {
    case '--src':
      src = array[index + 1];
      break;
    case '--out':
      out = array[index + 1];
      break;
  }
});

function writeSchema(fileContent, output) {
  if (!fileContent) {
    console.error('no schema found');
    return;
  }
  const { data } = JSON.parse(fileContent);
  const clientSchema = buildClientSchema(data);
  const graphqlSchemaString = printSchema(clientSchema);
  fs.writeFileSync(output, graphqlSchemaString);
}

if (!src) {
  console.error('must provide src path');
} else if (!out) {
  console.error('must provide out path');
} else {
  if (src === '-') {
    let data = '';
    process.stdin
      .on('data', function(d) {
        data += d;
      })
      .on('end', function() {
        writeSchema(data, out);
      })
      .setEncoding('utf8');
  } else {
    const fileContent = fs.readFileSync(src, 'utf-8');
    writeSchema(fileContent, out);
  }
}