impl Display for Diff<u8> {

fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

}

}

/// Enables or disables `line mode` optimization.

/// When enabled, the diff algorithm tries to find the `lines` that have changes and apply diff on the same

/// This optimization makes sense for text with many lines (~100s), defaults to `true`

pub fn set_checklines(&mut self, checklines: bool) {

self.checklines = checklines;

}

/// Set a timeout in number of `milliseconds`. This creates a cutoff for internal `recursive` function calls

/// Defaults to `1000ms` (1 second)

/// None means `infinite time`

pub fn set_timeout(&mut self, tout: Option<u32>) {

self.timeout = tout;

}

/// The `match_threshold` property determines the cut-off value for a valid match.

/// If `match_threshold` is closer to 1 then it is more likely that a match will be found.

/// The `match_threshold` is, the slower `match_main()` may take to compute.

/// defaults to 0.5

pub fn set_match_threshold(&mut self, threshold: f32) {

self.match_threshold = threshold

self.delete_threshold

}

// returns the configured max_bits

fn match_max_bits(&self) -> usize {

self.match_max_bits

self.match_distance

}

pub(crate) fn diff_internal<'a>(

&self,

}

pub fn to_delta(diffs: &[Diff<u8>]) -> Vec<u8> {

.map(|diff| {

}

data.pop();

let param = &token[1..];

if opcode == Some(&b'+') {

let param = percent_decode(param).collect::<Vec<_>>();

diffs.push(Diff::insert(&param));

} else if opcode == Some(&b'-') || opcode == Some(&b'=') {

.map_err(|_| crate::errors::Error::Utf8Error)

if n < 0 {

return Err(crate::errors::Error::InvalidInput);

return Err(crate::errors::Error::InvalidInput);

}

pointer = new_pointer;

if opcode == Some(&b'=') {

return Err(crate::errors::Error::InvalidInput);

}

}

if pointer != old.len() {

return Err(crate::errors::Error::InvalidInput);

}

Ok(diffs)

}

};

let segment = format!("{sign}{}\n", percent_encode(diff.data(), ENCODE_SET));

segments.push(segment)

});

/// # Example

/// ```

/// use diff_match_patch_rs::{DiffMatchPatch, Error};

/// # fn main() -> Result<(), Error> {

/// let mut dmp = DiffMatchPatch::new();

/// // change some settings, e.g. set `line mode` optimization to `false` because you know you have a small text and not many lines

/// # Example

/// ```

/// use diff_match_patch_rs::{DiffMatchPatch, Error};

/// # fn main() -> Result<(), Error> {

/// let mut dmp = DiffMatchPatch::new();

/// // change some settings, e.g. set `line mode` optimization to `false` because you know you have a small text and not many lines

/// <div class="warning">Not Implemented</div>

/// This function is similar to diff_cleanupSemantic, except that instead of optimising a diff to be human-readable, it optimises the diff to be efficient for machine processing.

/// The results of both cleanup types are often the same.

/// The efficiency cleanup is based on the observation that a diff made up of large numbers of small diffs edits may take longer to process (in downstream applications) or take more capacity to store or transmit than a smaller number of larger diffs.

/// The diff_match_patch.Diff_EditCost property sets what the cost of handling a new edit is in terms of handling extra characters in an existing edit.

/// The default value is 4, which means if expanding the length of a diff by three characters can eliminate one edit, then that optimisation will reduce the total costs.

/// Given a text to search, a pattern to search for and an expected location in the text near which to find the pattern, return the location which matches closest.

/// The function will search for the best match based on both the number of character errors between the pattern and the potential match,

/// as well as the distance between the expected location and the potential match.

/// The following example is a classic dilemma. There are two potential matches, one is close to the expected location but contains a one character error,

/// the other is far from the expected location but is exactly the pattern sought after: match_main("abc12345678901234567890abbc", "abc", 26)

/// Which result is returned (0 or 24) is determined by the diff_match_patch.match_distance property.

/// For example, a distance of '0' requires the match be at the exact location specified, whereas a threshold of '1000' would require a perfect match to be within 800

/// characters of the expected location to be found using a 0.8 threshold (see below).

/// The larger match_distance is, the slower match_main() may take to compute. This variable defaults to 1000.

/// Another property is `diff_match_patch.match_threshold` which determines the cut-off value for a valid match.

/// If `match_threshold` is closer to 0, the requirements for accuracy increase.

/// If `match_threshold` is closer to 1 then it is more likely that a match will be found.

/// The larger `match_threshold` is, the slower match_main() may take to compute. `match_threshold` defaults to 0.5 and can be updated by `dmp.set_match_threshold()` method.

/// If no match is found, the function returns -1.

pub fn match_main(&self, text: &str, pattern: &str, loc: usize) -> Option<usize> {

self.match_internal(text.as_bytes(), pattern.as_bytes(), loc)

}

/// Given two texts, or an already computed list of differences, return an array of patch objects.

/// The third form PatchInput::TextDiffs(...) is preferred, use it if you happen to have that data available, otherwise this function will compute the missing pieces.

/// TODO: add example

/// The second element is an array of true/false values indicating which of the patches were successfully applied.

/// [Note that this second element is not too useful since large patches may get broken up internally, resulting in a longer results list than the input with no way to figure out which patch succeeded or failed.

/// A more informative API is in development.]

/// The `match_distance` and `match_threshold` properties are used to evaluate patch application on text which does not match exactly.

/// In addition, the diff_match_patch.patch_delete_threshold property determines how closely the text within a major (~64 character) delete needs to match the expected text.

/// If patch_delete_threshold is closer to 0, then the deleted text must match the expected text more closely.

#[cfg(test)]

mod tests {

#[test]

fn test_prefix() {

let dmp = DiffMatchPatch::default();

// Both edges full.

let mut patches = dmp.patch_make(PatchInput::Texts("", "test"))?;

dmp.patch_add_padding(&mut patches);

assert_eq!(

"@@ -1,8 +1,12 @@\n %01%02%03%04\n+test\n %01%02%03%04\n",

Ok(())

}

}