61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
package file
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import "os"
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import "path/filepath"
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type File struct {
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path string
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moduleName string
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file *os.File
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currentLine int
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lines [][]byte
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}
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// Open opens the file specified by path and returns a new File struct. The
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// module name is automatically inferred through hte file's parent directory.
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func Open (path string) (file *File, err error) {
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file = &File {
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path: path,
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moduleName: filepath.Dir(path),
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lines: [][]byte { []byte { } },
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}
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file.file, err = os.OpenFile(path, os.O_RDONLY, 0660)
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if err != nil { return }
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return
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}
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// Stat returns the FileInfo structure describing file. If there is an error, it
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// will be of type *PathError.
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func (file *File) Stat () (fileInfo os.FileInfo, err error) {
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return file.file.Stat()
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}
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// Read reads up to len(bytes) bytes from the File and stores them in bytes. It
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// returns the number of bytes read and any error encountered. At end of file,
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// Read returns 0, io.EOF. This method stores all data read into the file struct
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// so it can be used later for error reporting.
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func (file *File) Read (bytes []byte) (amountRead int, err error) {
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amountRead, err = file.file.Read(bytes)
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for _, char := range bytes {
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if char == '\n' {
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file.lines = append(file.lines, []byte { })
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file.currentLine ++
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} else {
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file.lines[file.currentLine] = append (
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file.lines[file.currentLine],
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bytes...)
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}
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}
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return
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}
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// Close closes the file. After the file is closed, data that has been read will
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// still be retained, and errors can be reported.
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func (file *File) Close () {
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file.file.Close()
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}
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