helpers

package
v0.1.2 Latest Latest
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 Go to latest Published: Sep 10, 2023 License: MIT Imports: 12 Imported by: 0

Documentation

Overview

Package helpers provides all the accessory functionality required by the core and command line functionality. It covers common needs like file wrappers, definition of shared constants and types. One critical function is providing the structure and behavior around the type HelpersInfo, which is used throughout the app for various needs.

Index

Constants

View Source 
const (
	TCGLobalFolderName = "timeconverter"
	TCConfigFileName   = "timeconverter.yaml"
)
View Source 
const (
	ExitCodeSuccess = iota
	ExitCodePanicInExecute
	ExitCodeErrorReturnedToExecute
	ExitCodeUnknownErrorInRootCommand
	ExitCodeUnknownOutputTargetName
	ExitCodeFailureReadingPipeInput
	ExitCodePanicInUnloadOutputPrinter
	ExitCodeErrorDuringInitializeOutputPrinter
	ExitCodeErrorDecodingInput
	ExitCodeErrorNoInputProvided
)

A list of ExitCode value mappings to specific errors. This is useful when running this utility from a shell call or some other app.

Variables

View Source 
var ClipboardInitialized bool
View Source 
var CmdHelpers = &HelpersInfo{}
View Source 
var EntityToDescription = []EntityDescription{
	{"yy", "Two digit date"},
	{"yyyy", "Four digit date"},
	{"m", "Single digit month.  Shows as 2 digits for values over 9."},
	{"mm", "Double digit month"},
	{"mmm", "Three char month abbreviation: Jan, Feb, etc"},
	{"mmmm", "Full month name"},
	{"d", "Single digit day of month.  Shows as two digits for values over 9."},
	{"dd", "Double digit day of month"},
	{"ddd", "Three letter day abbreviation, Mon, Tue, etc"},
	{"dddd", "Full day name"},
	{"h", "Single digit hour value for 12 hour clock.  Shows as 2 digits for values over 9"},
	{"hh", "Double digit hour value for 12 hour clock."},
	{"hhh", "Double digit hour value for 24 hour clock."},
	{"n", "Single digit minute.  Shows as two digits for values over 9."},
	{"nn", "Double digit minute."},
	{"s", "Single digit seconds.  Shows as two digits for values over 9."},
	{"ss", "Double digit seconds."},
	{"zzz", "Milliseconds"},
	{"zzzzzz", "Microseconds"},
	{"zzzzzzzzz", "Nanoseconds"},
	{"am", "Shows AM or PM as appropriate."},
	{"pm", "Shows AM or PM as appropriate."},
	{"000", "Milliseconds"},
	{"000000", "Microseconds"},
	{"000000000", "Nanoseconds"},
	{"thh", "Timezone with hours only, e.g. -07"},
	{"thhmm", "Timezone with hours and mins, e.g. -0700"},
	{"thh%mm", "Timezone with hours and mins using separator, e.g. -07,00"},
	{"thhmmss", "Timezone with hours, mins, and seconds, without a separator, e.g. -070000"},
	{"thh%mm%ss", "Timezone with hours, mins, and seconds, using separator, e.g. -07,00,00"},
	{"zthh", "ISO 8601 Timezone using Z formatting, hours only. E.G. Z-07"},
	{"zthhmm", "ISO 8601 Timezone using Z formatting, hours and mins, e.g. Z-0700"},
	{"zthh%mm", "ISO 8601 Timezone using Z formatting, hours and mins with separator, e.q. Z-07,00"},
	{"zthhmmss", "ISO 8601 Timezone using Z formatting, hours, mins and seconds, e.g. Z-070000"},
	{"zthh%mm%ss", "ISO 8601 Timezone using Z formatting, hours, mins and seconds with separator, e.g. Z-07,00,00"},
}
View Source 
var EntityToGoMap = map[string]string{
	"yy":        "06",
	"yyyy":      "2006",
	"m":         "1",
	"mm":        "01",
	"mmm":       "Jan",
	"mmmm":      "January",
	"d":         "2",
	"dd":        "02",
	"ddd":       "Mon",
	"dddd":      "Monday",
	"h":         "3",
	"hh":        "03",
	"hhh":       "15",
	"n":         "4",
	"nn":        "04",
	"s":         "5",
	"ss":        "05",
	"zzz":       "000",
	"zzzzzz":    "000000",
	"zzzzzzzzz": "000000000",

	"am":         "PM",
	"pm":         "PM",
	"000":        "000",
	"000000":     "000000",
	"000000000":  "000000000",
	"thh":        "-07",
	"thhmm":      "-0700",
	"thh%mm":     "-07:00",
	"thhmmss":    "-070000",
	"thh%mm%ss":  "-07:00:00",
	"zthh":       "Z-07",
	"zthhmm":     "Z-0700",
	"zthh%mm":    "Z-07:00",
	"zthhmmss":   "Z-070000",
	"zthh%mm%ss": "Z-07:00:00",
}
View Source 
var ExitCode int = ExitCodeSuccess

ExitCode is used as the final ExitCode return by this runtime

View Source 
var NameToTimeFormat = map[string]TimeFormat{
	"ANSIC":            TimeFormat_ANSIC,
	"UNIXDATE":         TimeFormat_UnixDate,
	"RUBYDATE":         TimeFormat_RubyDate,
	"RFC822":           TimeFormat_RFC822,
	"RFC822Z":          TimeFormat_RFC822Z,
	"RFC850":           TimeFormat_RFC850,
	"RFC1123":          TimeFormat_RFC1123,
	"RFC1123Z":         TimeFormat_RFC1123Z,
	"RFC3339":          TimeFormat_RFC3339,
	"RFC3339NANO":      TimeFormat_RFC3339Nano,
	"KITCHEN":          TimeFormat_Kitchen,
	"STAMP":            TimeFormat_Stamp,
	"STAMPMILLI":       TimeFormat_StampMilli,
	"STAMPMICRO":       TimeFormat_StampMicro,
	"STAMPNANO":        TimeFormat_StampNano,
	"USDATETIME":       TimeFormat_USDateTime,
	"USDATETIMEZ":      TimeFormat_USDateTimeZ,
	"USDATETIMEMILLIZ": TimeFormat_USDateTimeMilliZ,
	"USDATETIMEMICROZ": TimeFormat_USDateTimeMicroZ,
	"USDATETIMENANOZ":  TimeFormat_USDateTimeNanoZ,
	"USDATESHORT":      TimeFormat_USDateShort,
	"USDATE":           TimeFormat_USDate,
	"EUDATETIME":       TimeFormat_EUDateTime,
	"EUDATETIMEZ":      TimeFormat_EUDateTimeZ,
	"EUDATETIMEMILLIZ": TimeFormat_EUDateTimeMilliZ,
	"EUDATETIMEMICROZ": TimeFormat_EUDateTimeMicroZ,
	"EUDATETIMENANOZ":  TimeFormat_EUDateTimeNanoZ,
	"EUDATESHORT":      TimeFormat_EUDateShort,
	"EUDATE":           TimeFormat_EUDate,
	"DATEONLY":         TimeFormat_DateOnly,
	"TIMEONLY":         TimeFormat_TimeOnly,
	"CUSTOM":           TimeFormat_Custom,
	"CUSTOMGO":         TimeFormat_CustomGO,
	"UNIXSECS":         TimeFormat_Unix_Secs,
	"UNIXMILLI":        TimeFormat_Unix_Milli,
	"UNIXMICRO":        TimeFormat_Unix_Micro,
	"UNIXNANO":         TimeFormat_Unix_Nano,
}
View Source 
var OutputModeNameToMode = map[string]OutputMode{
	"verbose": OutputMode_Verbose,
	"terse":   OutputMode_Terse,
}
View Source 
var OutputTargetNameToType = map[string]OutputTarget{
	"console":   OutputTarget_Console,
	"clipboard": OutputTarget_Clipboard,
}
View Source 
var OutputTargetToName = map[OutputTarget]string{
	OutputTarget_Console:   "console",
	OutputTarget_Clipboard: "clipboard",
}
View Source 
var TimeFormatToLayout = map[TimeFormat]string{
	TimeFormat_ANSIC:            "Mon Jan _2 15:04:05 2006",
	TimeFormat_UnixDate:         "Mon Jan _2 15:04:05 MST 2006",
	TimeFormat_RubyDate:         "Mon Jan 02 15:04:05 -0700 2006",
	TimeFormat_RFC822:           "02 Jan 06 15:04 MST",
	TimeFormat_RFC822Z:          "02 Jan 06 15:04 -0700",
	TimeFormat_RFC850:           "Monday, 02-Jan-06 15:04:05 MST",
	TimeFormat_RFC1123:          "Mon, 02 Jan 2006 15:04:05 MST",
	TimeFormat_RFC1123Z:         "Mon, 02 Jan 2006 15:04:05 -0700",
	TimeFormat_RFC3339:          "2006-01-02T15:04:05Z07:00",
	TimeFormat_RFC3339Nano:      "2006-01-02T15:04:05.999999999Z07:00",
	TimeFormat_Kitchen:          "3:04PM",
	TimeFormat_Stamp:            "Jan _2 15:04:05",
	TimeFormat_StampMilli:       "Jan _2 15:04:05.000",
	TimeFormat_StampMicro:       "Jan _2 15:04:05.000000",
	TimeFormat_StampNano:        "Jan _2 15:04:05.000000000",
	TimeFormat_USDateTime:       "2006-01-02 15:04:05",
	TimeFormat_USDateTimeZ:      "2006-01-02 15:04:05 -0700",
	TimeFormat_USDateTimeMilliZ: "2006-01-02 15:04:05.000 -0700",
	TimeFormat_USDateTimeMicroZ: "2006-01-02 15:04:05.000000 -0700",
	TimeFormat_USDateTimeNanoZ:  "2006-01-02 15:04:05.000000000 -0700",
	TimeFormat_USDateShort:      "1/2/06",
	TimeFormat_USDate:           "01/02/2006",
	TimeFormat_EUDateTime:       "2006-02-01 15:04:05",
	TimeFormat_EUDateTimeZ:      "2006-02-01 15:04:05 -0700",
	TimeFormat_EUDateTimeMilliZ: "2006-02-01 15:04:05.000 -0700",
	TimeFormat_EUDateTimeMicroZ: "2006-02-01 15:04:05.000000 -0700",
	TimeFormat_EUDateTimeNanoZ:  "2006-02-01 15:04:05.000000000 -0700",
	TimeFormat_EUDateShort:      "2/1/06",
	TimeFormat_EUDate:           "02/01/2006",
	TimeFormat_DateOnly:         "2006-01-02",
	TimeFormat_TimeOnly:         "15:04:05",
}
View Source 
var TimeFormatToName = map[TimeFormat]string{
	TimeFormat_ANSIC:            "ANSIC",
	TimeFormat_UnixDate:         "UnixDate",
	TimeFormat_RubyDate:         "RubyDate",
	TimeFormat_RFC822:           "RFC822",
	TimeFormat_RFC822Z:          "RFC822Z",
	TimeFormat_RFC850:           "RFC850",
	TimeFormat_RFC1123:          "RFC1123",
	TimeFormat_RFC1123Z:         "RFC1123Z",
	TimeFormat_RFC3339:          "RFC3339",
	TimeFormat_RFC3339Nano:      "RFC3339Nano",
	TimeFormat_Kitchen:          "Kitchen",
	TimeFormat_Stamp:            "Stamp",
	TimeFormat_StampMilli:       "StampMilli",
	TimeFormat_StampMicro:       "StampMicro",
	TimeFormat_StampNano:        "StampNano",
	TimeFormat_USDateTime:       "USDateTime",
	TimeFormat_USDateTimeZ:      "USDateTimeZ",
	TimeFormat_USDateTimeMilliZ: "USDateTimeMilliZ",
	TimeFormat_USDateTimeMicroZ: "USDateTimeMicroZ",
	TimeFormat_USDateTimeNanoZ:  "USDateTimeNanoZ",
	TimeFormat_USDateShort:      "USDateShort",
	TimeFormat_USDate:           "USDate",
	TimeFormat_EUDateTime:       "EUDateTime",
	TimeFormat_EUDateTimeZ:      "EUDateTimeZ",
	TimeFormat_EUDateTimeMilliZ: "EUDateTimeMilliZ",
	TimeFormat_EUDateTimeMicroZ: "EUDateTimeMicroZ",
	TimeFormat_EUDateTimeNanoZ:  "EUDateTimeNanoZ",
	TimeFormat_EUDateShort:      "EUDateShort",
	TimeFormat_EUDate:           "EUDate",
	TimeFormat_DateOnly:         "DateOnly",
	TimeFormat_TimeOnly:         "TimeOnly",
	TimeFormat_Custom:           "Custom",
	TimeFormat_CustomGO:         "CustomGO",
	TimeFormat_Unix_Secs:        "UnixSecs",
	TimeFormat_Unix_Milli:       "UnixMilli",
	TimeFormat_Unix_Micro:       "UnixMicro",
	TimeFormat_Unix_Nano:        "UnixNano",
}

Functions

func AdjustForOutputTimeZone 

func AdjustForOutputTimeZone(baseTime time.Time) (adjustedTime time.Time, err error)

AdjustForOutputTimeZone receives a base time value, then checks to see if the user entered value for output-timezone id one of two timezone types. It then adjusts the base time according to the determined offset. The timezone construction can be one of the following:

  • An offset in form of +HHMM
  • An IANA timezone name in form region/location.

func ArgWasProvidedByUser 

func ArgWasProvidedByUser(argNames []string) bool

func BuildFixedLoc 

func BuildFixedLoc(tzOffSet string) (loc *time.Location, err error)

BuildFixedLoc expects input should be in the form +HHMM, where "+" can be "+" or "-", but one of them must be supplied. For UTC, it would be +0000. Note that this does not support seconds offsets, just whole hours and mins.

func CheckIsPiped 

func CheckIsPiped() bool

func CommandContains 

func CommandContains(names []string) bool

func FileExists 

func FileExists(filePath string) (bool, error)

func InitClipboard 

func InitClipboard() error

func IsOffsetTZ 

func IsOffsetTZ(tzText string) bool

IsOffsetTZ examines a timezone reference and determines if it is a local timezone reference in IANA region/city format, or if it is an offset ref like -0700, +0000 or +0800. Offsets MUST be use a four digit format for the offset value and start with "a" + or "-".

func IsUnixTimeFormat 

func IsUnixTimeFormat(format TimeFormat) bool

func LoadOutputPrinter 

func LoadOutputPrinter() error

Types

type DateTimeFormatter 

type DateTimeFormatter struct {
	// contains filtered or unexported fields
}

func NewDateTimeFormatter 

func NewDateTimeFormatter(dateTime time.Time) *DateTimeFormatter

func (*DateTimeFormatter) BuildCustomLayout 

func (dtf *DateTimeFormatter) BuildCustomLayout(layoutText string) (convertedlayout string, err error)

BuildCustomLayout receives a layout pattern in an alpha syntax and returns a layout text in a go syntax

func (*DateTimeFormatter) FormatDateTime 

func (dtf *DateTimeFormatter) FormatDateTime(outputFormat TimeFormat) (formattedDate string, err error)

type EntityDescription 

type EntityDescription struct {
	Name        string
	Description string
}

type HelpersInfo 

type HelpersInfo struct {
	// If root.Execute() or maybe other routines want to indicate the causal error, they
	// will set this errResult field.
	ErrResult error
	// String-based input as the source
	Value string `yaml:"-"`
	// The input format name
	InputFormatName string `yaml:"inputFormatName"`
	// The input format type, determined from the input format name
	InputFormat TimeFormat `yaml:"-"`
	// For custom output type, the text of the custom layout
	InputLayout string `yaml:"inputLayout"`
	// The mapped name of the output format
	OutputFormatName string `yaml:"outputFormatName"`
	// The actual TimeFormat type, determined from the OutputFormatName
	OutputFormat TimeFormat `yaml:"-"`
	// For custom output type, the text of the custom layout
	OutputLayout string `yaml:"outputLayout"`
	// The mapped name of the output target
	OutputTargetName string `yaml:"outputTargetName"`
	// The transformed OutputTarget type based on the OutputTargetName
	OutputTarget OutputTarget `yaml:"-"`
	// If true, no output will be emitted
	OutputValueOnly bool `yaml:"outputValueOnly"`
	// The decoded stream
	ConvertedResult string `yaml:"-"`
	// When PipeMode is true, data is read from stdin and written to stdout.
	// Only the converted date is emitted, with possible exceptions for critical errors
	PipeMode bool `yaml:"-"`
	// When SetDefault is true, the currently provided cmd details will be saved as a local path default
	// for future runs.  Local path vals override global vals when both are set.
	SetDefault bool `yaml:"-"`
	// When SetGlobalDefault is true, the currently provided cmd details will be saved as a global
	// path default for future runs.
	SetGlobalDefault bool `yaml:"-"`
	// A timezone to use when converting the output time.  If not specified, the local time will be used for
	// the output time.
	OutputTimeZone string `yaml:"outputTimeZone"`
}

HelpersInfo is used to store the command line parameters, as well as transformed values. These are set by the cmd package/cobra, and are used or transformed in the primary logic in the encode package.

func (*HelpersInfo) ClearGlobalConfig 

func (hi *HelpersInfo) ClearGlobalConfig() error

func (*HelpersInfo) ClearLocalConfig 

func (hi *HelpersInfo) ClearLocalConfig() error

func (*HelpersInfo) GetGlobalConfigDataIfExists 

func (hi *HelpersInfo) GetGlobalConfigDataIfExists() (exists bool, contentBytes []byte, err error)

func (*HelpersInfo) GetLocalConfigDataIfExists 

func (hi *HelpersInfo) GetLocalConfigDataIfExists() (exists bool, contentBytes []byte, err error)

func (*HelpersInfo) InputFormatDesc 

func (hi *HelpersInfo) InputFormatDesc() string

InputFormatDesc is called by error handlers to build more descriptive input format names

func (*HelpersInfo) LoadConfigIfExists 

func (hi *HelpersInfo) LoadConfigIfExists()

func (*HelpersInfo) SaveGlobalDefault 

func (hi *HelpersInfo) SaveGlobalDefault()

func (*HelpersInfo) SaveLocalDefault 

func (hi *HelpersInfo) SaveLocalDefault()

type OutputMode 

type OutputMode int
const (
	OutputMode_Verbose OutputMode = iota
	OutputMode_Terse
	OutputMode_Force
)

type OutputPrinter 

type OutputPrinter struct {
	// contains filtered or unexported fields
}

OutputPrinter provides an internal wrapper that supports a few simple output mechanisms. It provides common output funcs like Print and Printf. Supported types are Console, Clipboard and Stdout. 

var OP *OutputPrinter

OP is the custom output printer that will send output to the configured target output type based on output mode

func (*OutputPrinter) DetermineOutputType 

func (op *OutputPrinter) DetermineOutputType() error

func (*OutputPrinter) Initialize 

func (op *OutputPrinter) Initialize() error

func (*OutputPrinter) Print 

func (op *OutputPrinter) Print(outputMode OutputMode, a ...any)

func (*OutputPrinter) Printf 

func (op *OutputPrinter) Printf(outputMode OutputMode, format string, a ...any)

func (*OutputPrinter) Println 

func (op *OutputPrinter) Println(outputMode OutputMode, a ...any)

func (*OutputPrinter) UnloadOutputPrinter 

func (op *OutputPrinter) UnloadOutputPrinter() (err error)

type OutputTarget 

type OutputTarget int
const (
	OutputTarget_Console OutputTarget = iota
	OutputTarget_Clipboard
)

type TimeFormat 

type TimeFormat int
const (
	TimeFormat_ANSIC            TimeFormat = iota // "Mon Jan _2 15:04:05 2006"
	TimeFormat_UnixDate                           // "Mon Jan _2 15:04:05 MST 2006"
	TimeFormat_RubyDate                           // "Mon Jan 02 15:04:05 -0700 2006"
	TimeFormat_RFC822                             // "02 Jan 06 15:04 MST"
	TimeFormat_RFC822Z                            // "02 Jan 06 15:04 -0700" // RFC822 with numeric zone
	TimeFormat_RFC850                             // "Monday, 02-Jan-06 15:04:05 MST"
	TimeFormat_RFC1123                            // "Mon, 02 Jan 2006 15:04:05 MST"
	TimeFormat_RFC1123Z                           // "Mon, 02 Jan 2006 15:04:05 -0700" // RFC1123 with numeric zone
	TimeFormat_RFC3339                            // "2006-01-02T15:04:05Z07:00"
	TimeFormat_RFC3339Nano                        // "2006-01-02T15:04:05.999999999Z07:00"
	TimeFormat_Kitchen                            // "3:04PM"
	TimeFormat_Stamp                              // "Jan _2 15:04:05"
	TimeFormat_StampMilli                         // "Jan _2 15:04:05.000"
	TimeFormat_StampMicro                         // "Jan _2 15:04:05.000000"
	TimeFormat_StampNano                          // "Jan _2 15:04:05.000000000"
	TimeFormat_USDateTime                         // "2006-01-02 15:04:05"
	TimeFormat_USDateTimeZ                        // "2006-01-02 15:04:05 -0700"
	TimeFormat_USDateTimeMilliZ                   // "2006-01-02 15:04:05.000 -0700"
	TimeFormat_USDateTimeMicroZ                   // "2006-01-02 15:04:05.000000 -0700"
	TimeFormat_USDateTimeNanoZ                    // "2006-01-02 15:04:05.000000000 -0700"
	TimeFormat_USDateShort                        // "1/2/06"
	TimeFormat_USDate                             // "01/02/2006"
	TimeFormat_EUDateTime                         // "2006-02-01 15:04:05"
	TimeFormat_EUDateTimeZ                        // "2006-02-01 15:04:05 -0700"
	TimeFormat_EUDateTimeMilliZ                   // "2006-02-01 15:04:05.000 -0700"
	TimeFormat_EUDateTimeMicroZ                   // "2006-02-01 15:04:05.000000 -0700"
	TimeFormat_EUDateTimeNanoZ                    // "2006-02-01 15:04:05.000000000 -0700"
	TimeFormat_DateOnly                           // "2006-01-02"
	TimeFormat_TimeOnly                           // "15:04:05"
	TimeFormat_Custom                             // Specify format with yy/yyyy m/mm/mmm/MMM/Mmm/mmmm/MMMM/Mmmm d/dd/ddd/DDD/Ddd/dddd/DDDD/Dddd h/hh n/nn ss zzz/zzzzzz/zzzzzzzzz tz
	TimeFormat_CustomGO                           // Specify format with GO layout specs
	TimeFormat_EUDateShort                        // "2/1/06"
	TimeFormat_EUDate                             // "02/01/2006"
	TimeFormat_Unix_Secs                          // Unix Seconds
	TimeFormat_Unix_Milli                         // Unix Milliseconds
	TimeFormat_Unix_Micro                         // Unix Microseconds
	TimeFormat_Unix_Nano                          // Unix Nanoseconds
)

type YamlConfig 

type YamlConfig struct {
	ConfigInfo *HelpersInfo `yaml:"TimeConverterSettings"`
}

YamlConfig is used to write out default structures to local and global default files.

Source Files

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