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-rw-r--r--vendor/codeberg.org/gruf/go-fastpath/path.go319
1 files changed, 0 insertions, 319 deletions
diff --git a/vendor/codeberg.org/gruf/go-fastpath/path.go b/vendor/codeberg.org/gruf/go-fastpath/path.go
deleted file mode 100644
index d8f434fe6..000000000
--- a/vendor/codeberg.org/gruf/go-fastpath/path.go
+++ /dev/null
@@ -1,319 +0,0 @@
-package fastpath
-
-import (
- "unsafe"
-)
-
-// allocate these just once
-var (
- dot = []byte(dotStr)
- dotStr = "."
-)
-
-type Builder struct {
- B []byte // B is the underlying byte buffer
- dd int // pos of last '..' appended to builder
- abs bool // abs stores whether path passed to first .Append() is absolute
- set bool // set stores whether b.abs has been set i.e. not first call to .Append()
-}
-
-// NewBuilder returns a new Builder object using the
-// supplied byte slice as the underlying buffer
-func NewBuilder(b []byte) Builder {
- if b != nil {
- b = b[:0]
- }
- return Builder{
- B: b,
- dd: 0,
-
- abs: false,
- set: false,
- }
-}
-
-// Reset resets the Builder object
-func (b *Builder) Reset() {
- b.B = b.B[:0]
- b.dd = 0
- b.abs = false
- b.set = false
-}
-
-// Len returns the number of accumulated bytes in the Builder
-func (b *Builder) Len() int {
- return len(b.B)
-}
-
-// Cap returns the capacity of the underlying Builder buffer
-func (b *Builder) Cap() int {
- return cap(b.B)
-}
-
-// Bytes returns the accumulated path bytes.
-func (b *Builder) Bytes() []byte {
- if len(b.B) < 1 {
- return dot
- }
- return b.B
-}
-
-// String returns the accumulated path string.
-func (b *Builder) String() string {
- if len(b.B) < 1 {
- return dotStr
- }
- return string(b.B)
-}
-
-// StringPtr returns a ptr to the accumulated path string.
-//
-// Please note the underlying byte slice for this string is
-// tied to the builder, so any changes will result in the
-// returned string changing. Consider using .String() if
-// this is undesired behaviour.
-func (b *Builder) StringPtr() string {
- if len(b.B) < 1 {
- return dotStr
- }
- return *(*string)(unsafe.Pointer(&b.B))
-}
-
-// Absolute returns whether current path is absolute (not relative)
-func (b *Builder) Absolute() bool {
- return b.abs
-}
-
-// SetAbsolute converts the current path to / from absolute
-func (b *Builder) SetAbsolute(val bool) {
- if !b.set {
- if val {
- // .Append() has not been
- // called, add a '/' and set abs
- b.Guarantee(1)
- b.appendByte('/')
- b.abs = true
- }
-
- // Set as having been set
- b.set = true
- return
- }
-
- if !val && b.abs {
- // Already set and absolute. Update
- b.abs = false
-
- // If not empty (i.e. not just '/'),
- // then shift bytes 1 left
- if len(b.B) > 1 {
- copy(b.B, b.B[1:])
- }
-
- // Truncate 1 byte. In the case of empty,
- // i.e. just '/' then it will drop this
- b.truncate(1)
- } else if val && !b.abs {
- // Already set but NOT abs. Update
- b.abs = true
-
- // Guarantee 1 byte available
- b.Guarantee(1)
-
- // If empty, just append '/'
- if len(b.B) < 1 {
- b.appendByte('/')
- return
- }
-
- // Increase length
- l := len(b.B)
- b.B = b.B[:l+1]
-
- // Shift bytes 1 right
- copy(b.B[1:], b.B[:l])
-
- // Set first byte '/'
- b.B[0] = '/'
- }
-}
-
-// Append adds and cleans the supplied path bytes to the
-// builder's internal buffer, growing the buffer if necessary
-// to accomodate the extra path length
-func (b *Builder) Append(p []byte) {
- b.AppendString(*(*string)(unsafe.Pointer(&p)))
-}
-
-// AppendString adds and cleans the supplied path string to the
-// builder's internal buffer, growing the buffer if necessary
-// to accomodate the extra path length
-func (b *Builder) AppendString(path string) {
- defer func() {
- // If buffer is empty, and an absolute
- // path, ensure it starts with a '/'
- if len(b.B) < 1 && b.abs {
- b.appendByte('/')
- }
- }()
-
- // Empty path, nothing to do
- if len(path) == 0 {
- return
- }
-
- // Guarantee at least the total length
- // of supplied path available in the buffer
- b.Guarantee(len(path))
-
- // Try store if absolute
- if !b.set {
- b.abs = len(path) > 0 && path[0] == '/'
- b.set = true
- }
-
- i := 0
- for i < len(path) {
- switch {
- // Empty path segment
- case path[i] == '/':
- i++
-
- // Singular '.' path segment, treat as empty
- case path[i] == '.' && (i+1 == len(path) || path[i+1] == '/'):
- i++
-
- // Backtrack segment
- case path[i] == '.' && path[i+1] == '.' && (i+2 == len(path) || path[i+2] == '/'):
- i += 2
-
- switch {
- // Check if it's possible to backtrack with
- // our current state of the buffer. i.e. is
- // our buffer length longer than the last
- // '..' we placed?
- case len(b.B) > b.dd:
- b.backtrack()
- // b.cp = b.lp
- // b.lp = 0
-
- // If we reached here, need to check if
- // we can append '..' to the path buffer,
- // which is ONLY when path is NOT absolute
- case !b.abs:
- if len(b.B) > 0 {
- b.appendByte('/')
- }
- b.appendByte('.')
- b.appendByte('.')
- b.dd = len(b.B)
- // b.lp = lp - 2
- // b.cp = b.dd
- }
-
- default:
- if (b.abs && len(b.B) != 1) || (!b.abs && len(b.B) > 0) {
- b.appendByte('/')
- }
- // b.lp = b.cp
- // b.cp = len(b.B)
- i += b.appendSlice(path[i:])
- }
- }
-}
-
-// Clean creates the shortest possible functional equivalent
-// to the supplied path, resetting the builder before performing
-// this operation. The builder object is NOT reset after return
-func (b *Builder) Clean(path string) string {
- b.Reset()
- b.AppendString(path)
- return b.String()
-}
-
-// Join connects and cleans multiple paths, resetting the builder before
-// performing this operation and returning the shortest possible combination
-// of all the supplied paths. The builder object is NOT reset after return
-func (b *Builder) Join(base string, paths ...string) string {
- b.Reset()
- b.AppendString(base)
- size := len(base)
- for i := 0; i < len(paths); i++ {
- b.AppendString(paths[i])
- size += len(paths[i])
- }
- if size < 1 {
- return ""
- } else if len(b.B) < 1 {
- return dotStr
- }
- return string(b.B)
-}
-
-// Guarantee ensures there is at least the requested size
-// free bytes available in the buffer, reallocating if necessary
-func (b *Builder) Guarantee(size int) {
- if size > cap(b.B)-len(b.B) {
- nb := make([]byte, 2*cap(b.B)+size)
- copy(nb, b.B)
- b.B = nb[:len(b.B)]
- }
-}
-
-// Truncate reduces the length of the buffer by the requested
-// number of bytes. If the builder is set to absolute, the first
-// byte (i.e. '/') will never be truncated
-func (b *Builder) Truncate(size int) {
- // If absolute and just '/', do nothing
- if b.abs && len(b.B) == 1 {
- return
- }
-
- // Truncate requested bytes
- b.truncate(size)
-}
-
-// truncate reduces the length of the buffer by the requested
-// size, no sanity checks are performed
-func (b *Builder) truncate(size int) {
- b.B = b.B[:len(b.B)-size]
-}
-
-// appendByte appends the supplied byte to the end of
-// the buffer. appending is achieved by continually reslicing the
-// buffer and setting the next byte-at-index, this is safe as guarantee()
-// will have been called beforehand
-func (b *Builder) appendByte(c byte) {
- b.B = b.B[:len(b.B)+1]
- b.B[len(b.B)-1] = c
-}
-
-// appendSlice appends the supplied string slice to
-// the end of the buffer and returns the number of indices
-// we were able to iterate before hitting a path separator '/'.
-// appending is achieved by continually reslicing the buffer
-// and setting the next byte-at-index, this is safe as guarantee()
-// will have been called beforehand
-func (b *Builder) appendSlice(slice string) int {
- i := 0
- for i < len(slice) && slice[i] != '/' {
- b.B = b.B[:len(b.B)+1]
- b.B[len(b.B)-1] = slice[i]
- i++
- }
- return i
-}
-
-// backtrack reduces the end of the buffer back to the last
-// separating '/', or end of buffer
-func (b *Builder) backtrack() {
- b.B = b.B[:len(b.B)-1]
-
- for len(b.B)-1 > b.dd && b.B[len(b.B)-1] != '/' {
- b.B = b.B[:len(b.B)-1]
- }
-
- if len(b.B) > 0 {
- b.B = b.B[:len(b.B)-1]
- }
-}