1 files changed, 0 insertions, 147 deletions
diff --git a/internal/gitdiff/apply.go b/internal/gitdiff/apply.go
deleted file mode 100644
index 44bbcca..0000000
--- a/internal/gitdiff/apply.go
+++ /dev/null
@@ -1,147 +0,0 @@
-package gitdiff
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"sort"
-)
-
-// Conflict indicates an apply failed due to a conflict between the patch and
-// the source content.
-//
-// Users can test if an error was caused by a conflict by using errors.Is with
-// an empty Conflict:
-//
-//	    if errors.Is(err, &Conflict{}) {
-//		       // handle conflict
-//	    }
-type Conflict struct {
-	msg string
-}
-
-func (c *Conflict) Error() string {
-	return "conflict: " + c.msg
-}
-
-// Is implements error matching for Conflict. Passing an empty instance of
-// Conflict always returns true.
-func (c *Conflict) Is(other error) bool {
-	if other, ok := other.(*Conflict); ok {
-		return other.msg == "" || other.msg == c.msg
-	}
-	return false
-}
-
-// ApplyError wraps an error that occurs during patch application with
-// additional location information, if it is available.
-type ApplyError struct {
-	// Line is the one-indexed line number in the source data
-	Line int64
-	// Fragment is the one-indexed fragment number in the file
-	Fragment int
-	// FragmentLine is the one-indexed line number in the fragment
-	FragmentLine int
-
-	err error
-}
-
-// Unwrap returns the wrapped error.
-func (e *ApplyError) Unwrap() error {
-	return e.err
-}
-
-func (e *ApplyError) Error() string {
-	return fmt.Sprintf("%v", e.err)
-}
-
-type lineNum int
-type fragNum int
-type fragLineNum int
-
-// applyError creates a new *ApplyError wrapping err or augments the information
-// in err with args if it is already an *ApplyError. Returns nil if err is nil.
-func applyError(err error, args ...interface{}) error {
-	if err == nil {
-		return nil
-	}
-
-	e, ok := err.(*ApplyError)
-	if !ok {
-		if err == io.EOF {
-			err = io.ErrUnexpectedEOF
-		}
-		e = &ApplyError{err: err}
-	}
-	for _, arg := range args {
-		switch v := arg.(type) {
-		case lineNum:
-			e.Line = int64(v) + 1
-		case fragNum:
-			e.Fragment = int(v) + 1
-		case fragLineNum:
-			e.FragmentLine = int(v) + 1
-		}
-	}
-	return e
-}
-
-var (
-	errApplyInProgress = errors.New("gitdiff: incompatible apply in progress")
-	errApplierClosed   = errors.New("gitdiff: applier is closed")
-)
-
-// Apply applies the changes in f to src, writing the result to dst. It can
-// apply both text and binary changes.
-//
-// If an error occurs while applying, Apply returns an *ApplyError that
-// annotates the error with additional information. If the error is because of
-// a conflict with the source, the wrapped error will be a *Conflict.
-func Apply(dst io.Writer, src io.ReaderAt, f *File) error {
-	if f.IsBinary {
-		if len(f.TextFragments) > 0 {
-			return applyError(errors.New("binary file contains text fragments"))
-		}
-		if f.BinaryFragment == nil {
-			return applyError(errors.New("binary file does not contain a binary fragment"))
-		}
-	} else {
-		if f.BinaryFragment != nil {
-			return applyError(errors.New("text file contains a binary fragment"))
-		}
-	}
-
-	switch {
-	case f.BinaryFragment != nil:
-		applier := NewBinaryApplier(dst, src)
-		if err := applier.ApplyFragment(f.BinaryFragment); err != nil {
-			return err
-		}
-		return applier.Close()
-
-	case len(f.TextFragments) > 0:
-		frags := make([]*TextFragment, len(f.TextFragments))
-		copy(frags, f.TextFragments)
-
-		sort.Slice(frags, func(i, j int) bool {
-			return frags[i].OldPosition < frags[j].OldPosition
-		})
-
-		// TODO(bkeyes): consider merging overlapping fragments
-		// right now, the application fails if fragments overlap, but it should be
-		// possible to precompute the result of applying them in order
-
-		applier := NewTextApplier(dst, src)
-		for i, frag := range frags {
-			if err := applier.ApplyFragment(frag); err != nil {
-				return applyError(err, fragNum(i))
-			}
-		}
-		return applier.Close()
-
-	default:
-		// nothing to apply, just copy all the data
-		_, err := copyFrom(dst, src, 0)
-		return err
-	}
-}