Imports #
"errors"
"internal/bytealg"
"unicode/utf8"
"internal/bytealg"
path
Imports
Constants & Variables
ErrBadPattern var #
ErrBadPattern indicates a pattern was malformed.
var ErrBadPattern = *ast.CallExprStructs
lazybuf struct #
A lazybuf is a lazily constructed path buffer. It supports append, reading previously appended bytes, and retrieving the final string. It does not allocate a buffer to hold the output until that output diverges from s.
type lazybuf struct {
s string
buf []byte
w int
}Functions
Base function #
Base returns the last element of path. Trailing slashes are removed before extracting the last element. If the path is empty, Base returns ".". If the path consists entirely of slashes, Base returns "/".
func Base(path string) stringClean function #
Clean returns the shortest path name equivalent to path by purely lexical processing. It applies the following rules iteratively until no further processing can be done: 1. Replace multiple slashes with a single slash. 2. Eliminate each . path name element (the current directory). 3. Eliminate each inner .. path name element (the parent directory) along with the non-.. element that precedes it. 4. Eliminate .. elements that begin a rooted path: that is, replace "/.." by "/" at the beginning of a path. The returned path ends in a slash only if it is the root "/". If the result of this process is an empty string, Clean returns the string ".". See also Rob Pike, “Lexical File Names in Plan 9 or Getting Dot-Dot Right,” https://9p.io/sys/doc/lexnames.html
func Clean(path string) stringDir function #
Dir returns all but the last element of path, typically the path's directory. After dropping the final element using [Split], the path is Cleaned and trailing slashes are removed. If the path is empty, Dir returns ".". If the path consists entirely of slashes followed by non-slash bytes, Dir returns a single slash. In any other case, the returned path does not end in a slash.
func Dir(path string) stringExt function #
Ext returns the file name extension used by path. The extension is the suffix beginning at the final dot in the final slash-separated element of path; it is empty if there is no dot.
func Ext(path string) stringIsAbs function #
IsAbs reports whether the path is absolute.
func IsAbs(path string) boolJoin function #
Join joins any number of path elements into a single path, separating them with slashes. Empty elements are ignored. The result is Cleaned. However, if the argument list is empty or all its elements are empty, Join returns an empty string.
func Join(elem ...string) stringMatch function #
Match reports whether name matches the shell pattern. The pattern syntax is: pattern: { term } term: '*' matches any sequence of non-/ characters '?' matches any single non-/ character '[' [ '^' ] { character-range } ']' character class (must be non-empty) c matches character c (c != '*', '?', '\\', '[') '\\' c matches character c character-range: c matches character c (c != '\\', '-', ']') '\\' c matches character c lo '-' hi matches character c for lo <= c <= hi Match requires pattern to match all of name, not just a substring. The only possible returned error is [ErrBadPattern], when pattern is malformed.
func Match(pattern string, name string) (matched bool, err error)Split function #
Split splits path immediately following the final slash, separating it into a directory and file name component. If there is no slash in path, Split returns an empty dir and file set to path. The returned values have the property that path = dir+file.
func Split(path string) (dir string, file string)append method #
func (b *lazybuf) append(c byte)getEsc function #
getEsc gets a possibly-escaped character from chunk, for a character class.
func getEsc(chunk string) (r rune, nchunk string, err error)index method #
func (b *lazybuf) index(i int) bytematchChunk function #
matchChunk checks whether chunk matches the beginning of s. If so, it returns the remainder of s (after the match). Chunk is all single-character operators: literals, char classes, and ?.
func matchChunk(chunk string, s string) (rest string, ok bool, err error)scanChunk function #
scanChunk gets the next segment of pattern, which is a non-star string possibly preceded by a star.
func scanChunk(pattern string) (star bool, chunk string, rest string)string method #
func (b *lazybuf) string() stringGenerated with Arrow