A very basic library to read GRIB files in Swift. This library is a wrapper for eccodes.
WARNING: No stable interface declared yet
Install eccodes via brew install eccodes or apt install libeccodes-dev
Add SwiftEccodes as a dependency to your Package.swift
dependencies: [
.package(url: "https://github.com/patrick-zippenfenig/SwiftEccodes.git", from: "0.0.0")
],
targets: [
.target(name: "MyApp", dependencies: [
.product(name: "SwiftEccodes", package: "SwiftEccodes"),
])
]Read GRIB messages and data from files:
import SwiftEccodes
let messages = try SwiftEccodes.getMessages(fileName: "test.grib", multiSupport: true)
for message in messages {
message.iterate(namespace: .ls).forEach({
print($0)
})
print(message.get(attribute: "name")!)
let data = try message.getDouble()
print(data[0..<10])
}Or read directly from memory:
import SwiftEccodes
let data = try Data(contentsOf: URL(fileURLWithPath: "test.grib"))
try data.withUnsafeBytes { ptr in
let messages = try SwiftEccodes.getMessages(memory: ptr, multiSupport: true)
for message in messages {
message.iterate(namespace: .ls).forEach({
print($0)
})
message.iterate(namespace: .geography).forEach({
print($0)
})
print(message.get(attribute: "name")!)
let data = try message.getDouble()
print(data.count)
print(data[0..<10])
}
}