[Feature] JSON Schema

Makefile

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+AJV_CLI_VERSION ?= 5.0.0
+JSON_DEREFERENCE_CLI_VERSION ?= 0.1.2
+
+all: build validate checksum verify
+
+build:
+	@echo "Building spec bundle"
+	npx -y json-dereference-cli@$(JSON_DEREFERENCE_CLI_VERSION) -s src/geocodejson.schema.json -o draft/geocodejson.schema.json
+
+validate:
+	@echo "Validating spec bundle"
+	npx -y ajv-cli@$(AJV_CLI_VERSION) compile -s draft/geocodejson.schema.json
+
+checksum:
+	@echo "Computing spec checksum"
+	./scripts/checksum
+
+verify:
+	./scripts/verify && echo "Checksum ok"

README.md

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+# GeocodeJSON Specification
+
+An attempt to have standard geojson responses from geocoders.
+
+## How to use
+
+Please read the full spec at [master/draft/README.md](https://github.com/geocoders/geocodejson-spec/blob/master/draft/README.md).
+
+You can validate a geocoding service response against this GeocodeJSON spec using the JSON schema provided: [master/draft/geocodejson.schema.json](https://github.com/geocoders/geocodejson-spec/blob/master/draft/geocodejson.schema.json). Refer to [JSON Schema official website](https://json-schema.org/) for further informations.
+
+Please verify the integrity of the JSON schema using the SHA-512 checksum provided: [master/draft/geocodejson.schema.json.checksum](https://github.com/geocoders/geocodejson-spec/blob/master/draft/geocodejson.schema.json.checksum).
+
+## How to contribute
+
+Pre-requisites: [git](https://git-scm.com/), [make](https://www.gnu.org/software/make/), [shasum](https://www.commandlinux.com/man-page/man1/shasum.1.html), [npx](https://www.npmjs.com/package/npx) (node and npm).
+
+Please follow these steps:
+
+- Let the community knows you want to contribute [opening an issue](https://github.com/geocoders/geocodejson-spec/issues)
+- Fork this repo, clone it locally and create a new branch
+- Edit the [draft document]((https://github.com/geocoders/geocodejson-spec/blob/master/draft/README.md))
+- Update the [JSON schema](https://github.com/geocoders/geocodejson-spec/blob/master/draft/geocodejson.schema.json) in `src/` folder
+- Run `make`
+- If all is ok, commit your changes and push them
+- Open a Pull Request on the main branch of this repo
+
+## Licence
+
+Public Domain, No Rights Reserved - Creative Commons Zero License ([CC0](https://creativecommons.org/public-domain/cc0/)).

draft/geocodejson.schema.json.checksum

@@ -0,0 +1 @@
+sha512-9205cc1f149fe92799841a54e917e434d481404b9ccafed032b332b4bb3c5089619d64d66e3b277e3e542d8fe09752e6f30e825e5be45a2c25cb136625c86ff7

scripts/checksum

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+#!/bin/bash
+
+INPUT_DIR=src
+OUTPUT_DIR=draft
+
+SCHEMA_FILE=geocodejson.schema.json
+
+SHA_CMD=shasum
+SHA_VERSION=512
+SHA_PREFIX="sha$SHA_VERSION"
+
+NPX_CMD=npx
+JSON_DEREFERENCE_CLI_VERSION="0.1.2"
+BUNDLE_SCHEMA_CMD="$NPX_CMD -y json-dereference-cli@$JSON_DEREFERENCE_CLI_VERSION"
+
+# JSON schema file must exist
+if [ ! -f "$INPUT_DIR/$SCHEMA_FILE" ]
+then
+    echo "$SCHEMA_FILE file in $INPUT_DIR folder is missing, abort"
+    exit 1
+fi
+
+# npx must be installed
+if ! command -v $NPX_CMD &> /dev/null
+then
+    echo "$NPX_CMD could not be found, please install it"
+    exit 1
+fi
+
+# Create bundles
+$BUNDLE_SCHEMA_CMD -s $INPUT_DIR/$SCHEMA_FILE -o $OUTPUT_DIR/$SCHEMA_FILE 2> /dev/null
+
+# shasum must be installed
+if ! command -v $SHA_CMD &> /dev/null
+then
+    echo "$SHA_CMD could not be found, please install it"
+    exit 1
+fi
+
+# Compute checksums
+SHA_SCHEMA_CHECKSUM=`$SHA_CMD -a $SHA_VERSION $OUTPUT_DIR/$SCHEMA_FILE | cut -d" " -f 1`
+
+echo "Checksum ($OUTPUT_DIR/$SCHEMA_FILE.checksum): $SHA_PREFIX-$SHA_SCHEMA_CHECKSUM"
+echo -n "$SHA_PREFIX-$SHA_SCHEMA_CHECKSUM" > $OUTPUT_DIR/$SCHEMA_FILE.checksum
+
+# Stage new checksums
+git add $OUTPUT_DIR/$SCHEMA_FILE.checksum
+
+exit 0

scripts/verify

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+#!/bin/bash
+
+INPUT_DIR=src
+OUTPUT_DIR=draft
+
+SCHEMA_FILE=geocodejson.schema.json
+
+SHA_CMD=shasum
+SHA_VERSION=512
+SHA_PREFIX="sha$SHA_VERSION"
+
+# JSON schema file must exist
+if [ ! -f "$OUTPUT_DIR/$SCHEMA_FILE" ]
+then
+    echo "$SCHEMA_FILE file in $INPUT_DIR folder is missing, abort"
+    exit 1
+fi
+
+# shasum must be installed
+if ! command -v $SHA_CMD &> /dev/null
+then
+    echo "$SHA_CMD could not be found, please install it"
+    exit 1
+fi
+
+# Checksums must exists
+if [ ! -f "$OUTPUT_DIR/$SCHEMA_FILE.checksum" ]
+then
+    echo "$SCHEMA_FILE.checksum file in $OUTPUT_DIR folder is missing, abort"
+    exit 1
+fi
+
+# Compute checksums
+SHA_SCHEMA_CHECKSUM=`$SHA_CMD -a $SHA_VERSION $OUTPUT_DIR/$SCHEMA_FILE | cut -d" " -f 1`
+
+if ! grep "$SHA_PREFIX-$SHA_SCHEMA_CHECKSUM" $OUTPUT_DIR/$SCHEMA_FILE.checksum &>/dev/null
+then
+    echo "Wrong checksum for $OUTPUT_DIR/$SCHEMA_FILE, please verify"
+    exit 1
+else
+    echo "Checksum ($OUTPUT_DIR/$SCHEMA_FILE): $SHA_PREFIX-$SHA_SCHEMA_CHECKSUM"
+fi
+
+exit 0

src/geocodejson.schema.json

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+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "$id": "https://geocoders.github.io/geocodejson-spec/draft/geocodejson.schema.json",
+    "title": "GeocodeJSON Schema",
+    "description": "GeocodeJSON is an extension of the GeoJSON format and it is an attempt to create a standard for handling geocoding results.",
+    "allOf": [
+        {
+            "$ref": "https://geojson.org/schema/GeoJSON.json"
+        },
+        {
+            "type": "object",
+            "description": "GeocodeJSON extension of GeoJSON Feature Collection",
+            "properties": {
+                "type": {
+                    "const": "FeatureCollection",
+                    "description": "REQUIRED. GeocodeJSON result is a FeatureCollection."
+                },
+                "geocoding": {
+                    "type": "object",
+                    "description": "REQUIRED. Namespace.",
+                    "properties": {
+                        "version": {
+                            "$ref": "semver.schema.json",
+                            "description": "A semver.org compliant version number. Describes the version of the GeocodeJSON spec that is implemented by this instance."
+                        },
+                        "licence": {
+                            "type": "string",
+                            "description": "OPTIONAL. The licence of the data. In case of multiple sources, and then multiple licences, can be an object with one key by source.",
+                            "examples": [
+                                "ODbL"
+                            ]
+                        },
+                        "attribution": {
+                            "type": "string",
+                            "description": "OPTIONAL. The attribution of the data. In case of multiple sources, and then multiple attributions, can be an object with one key by source.",
+                            "examples": [
+                                "OpenStreetMap Contributors"
+                            ]
+                        },
+                        "query": {
+                            "type": "string",
+                            "description": "OPTIONAL. The query that has been issued to trigger the search.",
+                            "examples": [
+                                "24 allée de Bercy 75012 Paris"
+                            ]
+                        }
+                    },
+                    "required": [
+                        "version"
+                    ]
+                }
+            },
+            "required": [
+                "geocoding"
+            ]
+        },
+        {
+            "type": "object",
+            "description": "GeocodeJSON extension of GeoJSON Feature",
+            "properties": {
+                "features": {
+                    "type": "array",
+                    "description": "REQUIRED. As per GeoJSON spec.",
+                    "items": {
+                        "type": "object",
+                        "description": "OPTIONAL. An array of feature objects.",
+                        "properties": {
+                            "type": {
+                                "const": "Feature",
+                                "description": "REQUIRED. As per GeoJSON spec."
+                            },
+                            "properties": {
+                                "type": "object",
+                                "description": "REQUIRED. As per GeoJSON spec.",
+                                "properties": {
+                                    "geocoding": {
+                                        "type": "object",
+                                        "description": "REQUIRED. Namespace.",
+                                        "properties": {
+                                            "type": {
+                                                "type": "string",
+                                                "description": "REQUIRED. One of house, street, locality, city, region, country.",
+                                                "examples": [
+                                                    "house",
+                                                    "street",
+                                                    "district",
+                                                    "city",
+                                                    "county",
+                                                    "state",
+                                                    "country",
+                                                    "locality"
+                                                ]
+                                            },
+                                            "accuracy": {
+                                                "type": "number",
+                                                "minimum": 0,
+                                                "description": "OPTIONAL. Result accuracy, in meters.",
+                                                "examples": [
+                                                    20
+                                                ]
+                                            },
+                                            "label": {
+                                                "type": "string",
+                                                "description": "RECOMMENDED. Suggested label for the result.",
+                                                "examples": [
+                                                    "My Shoes Shop, 64 rue de Metz 59280 Armentières"
+                                                ]
+                                            },
+                                            "name": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Name of the place.",
+                                                "examples": [
+                                                    "My Shoes Shop"
+                                                ]
+                                            },
+                                            "housenumber": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Housenumber of the place.",
+                                                "examples": [
+                                                    "64"
+                                                ]
+                                            },
+                                            "street": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Street of the place.",
+                                                "examples": [
+                                                    "Rue de Metz"
+                                                ]
+                                            },
+                                            "locality": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Locality of the place.",
+                                                "examples": [
+                                                    "Les Clarons"
+                                                ]
+                                            },
+                                            "postcode": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Postcode of the place.",
+                                                "examples": [
+                                                    "59280"
+                                                ]
+                                            },
+                                            "city": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. City of the place.",
+                                                "examples": [
+                                                    "Armentières"
+                                                ]
+                                            },
+                                            "district": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. District of the place."
+                                            },
+                                            "county": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. County of the place."
+                                            },
+                                            "state": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. State of the place."
+                                            },
+                                            "country": {
+                                                "type": "string",
+                                                "description": "OPTIONAL. Country of the place.",
+                                                "examples": [
+                                                    "France"
+                                                ]
+                                            },
+                                            "admin": {
+                                                "type": "object",
+                                                "description": "OPTIONAL. Administratives boundaries the feature is included in, as defined in http://wiki.osm.org/wiki/Key:admin_level#admin_level.",
+                                                "patternProperties": {
+                                                    "^level[0-9]+$": {
+                                                        "type": "string"
+                                                    }
+                                                }
+                                            },
+                                            "geohash": {
+                                                "$ref": "geohash.schema.json",
+                                                "description": "OPTIONAL. Geohash encoding of coordinates (see http://geohash.org/site/tips.html)."
+                                            }
+                                        },
+                                        "required": [
+                                            "type"
+                                        ]
+                                    }
+                                },
+                                "required": [
+                                    "geocoding"
+                                ]
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    ]
+}

src/geohash.schema.json

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+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "$id": "http://geohash.org/geohash.schema.json",
+    "type": "string",
+    "description": "Geohash encoding of coordinates (see http://geohash.org and https://en.wikipedia.org/wiki/Geohash).",
+    "pattern": "^[0123456789bcdefghjkmnpqrstuvwxyz]+(:.+)?$",
+    "examples": [
+        "6gkzmg1w",
+        "6gkzwgjzn820",
+        "c216ne:Mt_Hood"
+    ]
+}

src/semver.schema.json

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+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "$id": "https://semver.org/semver.schema.json",
+    "type": "string",
+    "description": "A semver.org compliant version number (see https://semver.org).",
+    "pattern": "^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?$",
+    "minLength": 5,
+    "maxLength": 256,
+    "examples": [
+        "0.1.0",
+        "1.0.0-beta.1",
+        "1.0.0-0.3.7",
+        "2.2.4"
+    ]
+}