53 lines
1.9 KiB
Swift
53 lines
1.9 KiB
Swift
import Foundation
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import TOML
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extension PHTheme {
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/// Load theme from the resolved config directory (`PHPaths`/themes).
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/// If the file doesn't exist or fails to parse, the execution is interrupted.
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///
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/// - Parameter environment: Used to expand `$VAR` references in `@EnvExpanded`
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/// fields (colors, fonts); defaults to the process environment.
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static func load(_ theme: String, environment: PHEnvironment = .process) throws -> PHTheme {
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let url = PHPaths.configDirectory.appending(path: "themes").appending(path: "\(theme).toml")
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if FileManager.default.fileExists(atPath: url.relativePath) {
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return try load(from: url, environment: environment)
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} else {
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throw PHBar.Error(
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"""
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Theme file not found.
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Make sure to have a file named `\(theme).toml` inside the
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directory: `\(url.deletingLastPathComponent().relativePath)`
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Tip: If you've never used phbar before, run the `phbar install` command
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to automatically generate the required configuration files.
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"""
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)
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}
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}
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/// Load theme from a file at URL.
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/// If the file doesn't exist or fails to parse, the execution is interrupted.
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static private func load(from url: URL, environment: PHEnvironment) throws -> PHTheme {
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guard let data = try? Data(contentsOf: url),
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let contents = String(data: data, encoding: .utf8), !contents.isEmpty
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else {
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throw PHBar.Error("Theme file not readable or empty.")
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}
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return try load(from: contents, environment: environment)
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}
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/// Load theme from a TOML string.
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/// If the content fails to parse, the execution is interrupted.
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static private func load(from contents: String, environment: PHEnvironment) throws -> PHTheme {
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do {
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let decoder = TOMLDecoder()
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decoder.userInfo[PHEnvironment.userInfoKey] = environment
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return try decoder.decode(PHTheme.self, from: contents)
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} catch {
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throw PHBar.Error("Theme file not valid", underlyingError: error)
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}
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}
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}
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