v0.1.0

envstruct v0.1.0

A modern, drop-in replacement for the unmaintained kelseyhightower/envconfig (7 years without a release, 8.5K importers).

Features

• Process(prefix, v) / MustProcess(prefix, v) — parse env vars into structs
• Usage(prefix, v) — print aligned documentation of expected env vars
• Full type support: string, bool, integers, floats, time.Duration, *url.URL, slices, maps, pointer fields
• Custom decoder interfaces: Decoder, Setter, encoding.TextUnmarshaler
• Nested and embedded structs with prefix propagation
• Pointer-to-struct: allocated only when at least one child env var is set
• Tag support: env, envconfig, required, default/envDefault, envSeparator, envExpand, ignored, desc
• CamelCase → UPPER_SNAKE_CASE conversion (envconfig-compatible)
• Multi-error collection with ParseError / ProcessError
• Zero external dependencies
• 79 tests, 94.1% coverage, race-clean

Migration from envconfig

// Before
import "github.com/kelseyhightower/envconfig"
envconfig.Process("myapp", &cfg)

// After
import "github.com/agentine/envstruct"
envstruct.Process("myapp", &cfg)

Existing struct tags (envconfig, required, default) are recognized without changes.