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Diff
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Class containing the diff, match and patch methods.
Also Contains the behavior settings.
Inheritance Hierarchy
Namespace: GSF.Text
Assembly: GSF.Core (in GSF.Core.dll) Version: 2.4.207-beta+1781b796b2aa7a54013a031eb432fe4ccee31867
SyntaxThe DiffMatchPatch type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | DiffMatchPatch | Initializes a new instance of the DiffMatchPatch class |
Methods| Name | Description | |
|---|---|---|
 | DiffBisect | Find the 'middle snake' of a diff, split the problem in two and return the recursively constructed diff. See Myers 1986 paper: An O(ND) Difference Algorithm and Its Variations. |
| DiffCharsToLines | Rehydrate the text in a diff from a string of line hashes to real lines of text. |
| DiffCleanupEfficiency | Reduce the number of edits by eliminating operationally trivial equalities. |
| DiffCleanupMerge | Reorder and merge like edit sections. Merge equalities. Any edit section can move as long as it doesn't cross an equality. |
| DiffCleanupSemantic | Reduce the number of edits by eliminating semantically trivial equalities. |
| DiffCleanupSemanticLossless | Look for single edits surrounded on both sides by equalities which can be shifted sideways to align the edit to a word boundary. e.g: The cat came. -> The cat came. |
| DiffCommonOverlap | Determine if the suffix of one string is the prefix of another. |
| DiffCommonPrefix | Determine the common prefix of two strings. |
| DiffCommonSuffix | Determine the common suffix of two strings. |
| DiffFromDelta | Given the original text1, and an encoded string which describes the operations required to transform text1 into text2, compute the full diff. |
| DiffHalfMatch | Do the two texts share a Substring which is at least half the length of the longer text? This speedup can produce non-minimal diffs. |
| DiffLevenshtein | Compute the Levenshtein distance; the number of inserted, deleted or substituted characters. |
| DiffLinesToChars | Split two texts into a list of strings. Reduce the texts to a string of hashes where each Unicode character represents one line. |
| DiffMain(String, String) | Find the differences between two texts. Run a faster, slightly less optimal diff. This method allows the 'checklines' of DiffMain() to be optional. Most of the time checklines is wanted, so default to true. |
| DiffMain(String, String, Boolean) | Find the differences between two texts. |
| DiffPrettyHtml | Convert a Diff list into a pretty HTML report. |
| DiffText1 | Compute and return the source text (all equalities and deletions). |
| DiffText2 | Compute and return the destination text (all equalities and insertions). |
| DiffToDelta | Crush the diff into an encoded string which describes the operations required to transform text1 into text2. E.g. =3\t-2\t+ing -> Keep 3 chars, delete 2 chars, insert 'ing'. Operations are tab-separated. Inserted text is escaped using %xx notation. |
| DiffXIndex | loc is a location in text1, compute and return the equivalent location in text2. e.g. "The cat" vs "The big cat", 1->1, 5->8 |
 | EncodeURI | Encodes a string with URI-style % escaping. Compatible with JavaScript's encodeURI function. |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object) |
| GetHashCode | Serves as the default hash function. (Inherited from Object) |
| GetType | Gets the Type of the current instance. (Inherited from Object) |
| MatchAlphabet | Initialize the alphabet for the Bitap algorithm. |
| MatchBitap | Locate the best instance of 'pattern' in 'text' near 'loc' using the Bitap algorithm. Returns -1 if no match found. |
| MatchMain | Locate the best instance of 'pattern' in 'text' near 'loc'. Returns -1 if no match found. |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object) |
| PatchAddContext | Increase the context until it is unique, but don't let the pattern expand beyond MatchMaxBits. |
| PatchAddPadding | Add some padding on text start and end so that edges can match something. Intended to be called only from within PatchApply. |
| PatchApply | Merge a set of patches onto the text. Return a patched text, as well as an array of true/false values indicating which patches were applied. |
| PatchDeepCopy | Given an array of patches, return another array that is identical. |
| PatchFromText | Parse a textual representation of patches and return a List of Patch objects. |
| PatchMake(ListDiff) | Compute a list of patches to turn text1 into text2. text1 will be derived from the provided diffs. |
| PatchMake(String, ListDiff) | Compute a list of patches to turn text1 into text2. text2 is not provided, diffs are the delta between text1 and text2. |
| PatchMake(String, String) | Compute a list of patches to turn text1 into text2. A set of diffs will be computed. |
| PatchMake(String, String, ListDiff) | Obsolete. Compute a list of patches to turn text1 into text2. text2 is ignored, diffs are the delta between text1 and text2. |
| PatchSplitMax | Look through the patches and break up any which are longer than the maximum limit of the match algorithm. Intended to be called only from within PatchApply. |
| PatchToText | Take a list of patches and return a textual representation. |
| ToString | Returns a string that represents the current object. (Inherited from Object) |
Fields| Name | Description | |
|---|---|---|
 | DiffEditCost | Cost of an empty edit operation in terms of edit characters. |
| DiffTimeout | Number of seconds to map a diff before giving up (0 for infinity). |
| MatchDistance | How far to search for a match (0 = exact location, 1000+ = broad match). A match this many characters away from the expected location will add 1.0 to the score (0.0 is a perfect match). |
| MatchThreshold | At what point is no match declared (0.0 = perfection, 1.0 = very loose). |
| PatchDeleteThreshold | When deleting a large block of text (over ~64 characters), how close do the contents have to be to match the expected contents. (0.0 = perfection, 1.0 = very loose). Note that MatchThreshold controls how closely the end points of a delete need to match. |
| PatchMargin | Chunk size for context length. |
Extension Methods| Name | Description | |
|---|---|---|
 | GetEnumValueOrDefault |
Gets the enumeration constant for value, if defined in the enumeration, or a default value.
(Defined by EnumExtensions) |
| GetEnumValueOrDefaultT |
Gets the enumeration constant for this value, if defined in the enumeration, or a default value.
(Defined by EnumExtensions) |
See Also