filehelper

README

File Helper

See (limited) tests for example usage. This package is used by some other projects, you might find it useful as well, but this package is a borderline anti-pattern.

Main responsibilities:

• read and write csv
• unified file read for csv, xml or json with extendible parsing
• template parsing with handy functions - see tests

Documentation

Index

• func FindInTar(tarfile, search string) map[string]string
• func JsonEscape(i string) string
• func ListTar(filename string) []string
• func MustProcessTemplateFile(template string, bundle interface{}) string
• func MustTemplate(str string, data interface{}) string
• func OnlyWriteCSV(w csv.Writer, columns []string, rows []map[string]interface{}) error
• func ProcessTemplateFile(template string, bundle interface{}) ([]byte, error)
• func ReadCSV(filename string) ([]map[string]string, []string, error)
• func ReadTar(tarfile, filename string) interface{}
• func RegisterFS(filesystem afero.Fs)
• func SplitKeys(v interface{}) ([]string, []map[string]interface{}, error)
• func Template(str string, data interface{}) (string, error)
• func TemplateDelim(str string, data interface{}, begin, end string) (string, error)
• func WriteCSV(file io.ReadWriter, columns []string, rows []map[string]interface{}) ([]byte, error)
• func WriteTar(datafile, filename string, buf []byte)
• type Parser
  • func NewParser() *Parser
  • func (l *Parser) ParseStruct(content io.Reader, format string) (interface{}, error)
  • func (l *Parser) ReadStruct(filename, format string) (interface{}, error)
  • func (l *Parser) RegisterParser(format string, parser ParserFunc)
• type ParserFunc

Functions

func FindInTar

func FindInTar(tarfile, search string) map[string]string

FindInTar looks for search string in tarball, returns list of filenames and matches

func JsonEscape

func JsonEscape(i string) string

JsonEscape escapes a string for JSON

func ListTar

func ListTar(filename string) []string

ListTar will return file list from given tar file

func MustProcessTemplateFile

func MustProcessTemplateFile(template string, bundle interface{}) string

MustProcessTemplateFile processes golang template file

func MustTemplate

func MustTemplate(str string, data interface{}) string

MustTemplate parses string as Go template, using data as scope

func OnlyWriteCSV

func OnlyWriteCSV(w csv.Writer, columns []string, rows []map[string]interface{}) error

OnlyWriteCSV writes headers and rows into a given file handle

func ProcessTemplateFile

func ProcessTemplateFile(template string, bundle interface{}) ([]byte, error)

ProcessTemplateFile processes golang template file

func ReadCSV

func ReadCSV(filename string) ([]map[string]string, []string, error)

ReadCSV reads csv into []map[string]string + []string for headers

func ReadTar

func ReadTar(tarfile, filename string) interface{}

ReadTar reads filename from given tarball and returns content

func RegisterFS

func RegisterFS(filesystem afero.Fs)

RegisterFS (afero) virtual filesystem for ProcessTemplateFile

func SplitKeys

func SplitKeys(v interface{}) ([]string, []map[string]interface{}, error)

SplitKeys creates a map for CSV header

func Template

func Template(str string, data interface{}) (string, error)

Template parses string as Go template, using data as scope

func TemplateDelim

func TemplateDelim(str string, data interface{}, begin, end string) (string, error)

TemplateDelim parses string with custom delimiters as Go template, using data as scope

func WriteCSV

func WriteCSV(file io.ReadWriter, columns []string, rows []map[string]interface{}) ([]byte, error)

WriteCSV writes headers and rows into a given file handle and reads it back as []byte

func WriteTar

func WriteTar(datafile, filename string, buf []byte)

WriteTar will append to datafile with filename using buf data

Types

type Parser

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

Parser is the main type

func NewParser

func NewParser() *Parser

NewParser defines a new parser

func (*Parser) ParseStruct

func (l *Parser) ParseStruct(content io.Reader, format string) (interface{}, error)

ParseStruct parses byte slice into map or slice

func (*Parser) ReadStruct

func (l *Parser) ReadStruct(filename, format string) (interface{}, error)

ReadStruct reads from given file, parsing into structure

func (*Parser) RegisterParser

func (l *Parser) RegisterParser(format string, parser ParserFunc)

RegisterParser registers or overrides a format parser func. Indices are lower case.

type ParserFunc

type ParserFunc func([]byte) (interface{}, error)

ParserFunc is to parse a []byte into an interface{}