voicera/gooseberry

// Package must provides functions used in package and variables initialization.
// If an error occurs, those functions will panic. Use judiciously!
package must

import (
    "io"
    "os"
    "strconv"
    "time"

    "github.com/voicera/gooseberry/errors"
)

// Close wraps io.Closer.Close().
func Close(c io.Closer) {
    err := c.Close()
    errors.PanicIfNotNil(err)
}

// Getenv wraps os.Getenv(key).
func Getenv(key string) string {
    value := os.Getenv(key)
    if value == "" {
        panic(key + " is not set.")
    }

    return value
}

// LoadLocation wraps time.LoadLocation(name).
func LoadLocation(name string) *time.Location {
    location, err := time.LoadLocation(name)
    errors.PanicIfNotNil(err)
    return location
}

// ParseBool wraps strconv.ParseBool(s).
func ParseBool(s string) bool {
    b, err := strconv.ParseBool(s)
    errors.PanicIfNotNil(err)
    return b
}

// ParseDuration wraps time.ParseDuration(s).
func ParseDuration(s string) time.Duration {
    duration, err := time.ParseDuration(s)
    errors.PanicIfNotNil(err)
    return duration
}

// ParseFloat wraps strconv.ParseFloat(s, 64).
func ParseFloat(s string) float64 {
    f, err := strconv.ParseFloat(s, 64)
    errors.PanicIfNotNil(err)
    return f
}

// ParseInt wraps strconv.ParseInt(s, 0, 64).
func ParseInt(s string) int64 {
    i, err := strconv.ParseInt(s, 0, 64)
    errors.PanicIfNotNil(err)
    return i
}

// ConvertToInt wraps strconv.Atoi for cases that ParseInt cannot handle
func ConvertToInt(s string) int {
    i, err := strconv.Atoi(s)
    errors.PanicIfNotNil(err)
    return i
}

// RemoveFileSystemNode wraps os.Remove(name).
func RemoveFileSystemNode(name string) {
    err := os.Remove(name)
    errors.PanicIfNotNil(err)
}