iotools

func AppendFile ¶

func AppendFile(file string) *os.File

AppendFile opens the file at the given file path and returns file stream in append mode. It will exit if it encounters an error.

func CheckError ¶

func CheckError(msg string, err error, code int) bool

CheckError returns true if err is nil; otherwise, if code is 0 it prints a warning and returns false. If code is not 0, it prints an error formatted with msg and exits with code.

func CreateFile ¶

func CreateFile(file string) *os.File

CreateFile creates a file at the given file path and returns a file stream. It will exit if it encounters an error.

func Exists ¶

func Exists(path string) bool

Exists seturns true if the given file or directory exists.

func FindDelim ¶

func FindDelim(infile string) (string, error)

FindDelim returns delimiter (tab, comma, pipe, semicolon, colon, or space) from a text file. Returns an error if delimiter cannot be found.

func FormatPath ¶

func FormatPath(path string, makenew bool) (string, bool)

FormatPath returns path name with trailing slash (os.PathSeparator) and makes the directory if makenew is true.

func GetDelim ¶

func GetDelim(header string) (string, error)

GetDelim returns delimiter (tab, comma, pipe, semicolon, colon, or space) from a line of a text file. Returns an error if delimiter cannot be found.

func GetExt ¶

func GetExt(file string) string

GetExt returns the file extension (everthing after the last period) from file.

func GetFileName ¶

func GetFileName(file string) string

GetFileName returns the base name (everything between the final slash and first period) from file.

func GetGOPATH ¶

func GetGOPATH() string

GetGOPATH returns gopath environent environment variable.

func GetHeader ¶

func GetHeader(row []string) map[string]int

GetHeader returns a map of header names to indeces.

func GetParent ¶

func GetParent(path string) string

GetParent returns name of parent directory from path.

func GetScanner ¶

func GetScanner(f *os.File) *bufio.Scanner

GetScanner determines if a file is gzipped or not returns the appropriate scanner. It will exit if it encounters an error.

func Gzip ¶

func Gzip(outfile, header string, results [][]string)

Gzip compresses infile to same directory. Adds '.gz' extension.

func OpenFile ¶

func OpenFile(file string) *os.File

OpenFile opens the file at the given file path and returns a file stream. It will exit if it encounters an error.

func ReadFile ¶

func ReadFile(infile string, header bool) ([][]string, map[string]int)

ReadFile reads in compressed and uncompressed text files as a two dimensional slice of strings and the header as a map of indeces.

func WriteToCSV ¶

func WriteToCSV(outfile, header string, results [][]string)

WriteToCSV writes a string header and a two dimensional slice of strings to csv. Gzips file if last three characters of file name are '.gz'.

func YieldFile ¶

func YieldFile(infile string, header bool) (<-chan []string, map[string]int)

YieldFile reads compressed and uncompressed text files and returns the header as a map of indeces and the lines as an iterable channel of string slices.

		reader, header := iotools.YieldFile(infile, true)
     for i := range reader { ...