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jfcherngjfcherng
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Tidy codes
Signed-off-by: Jack Cherng <[email protected]>
1 parent df1555a commit c4e7d7b

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5 files changed

+34
-29
lines changed

5 files changed

+34
-29
lines changed

‎src/Renderer/Html/AbstractHtml.php

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -72,6 +72,7 @@ public function getChanges(Differ $differ): array
7272
foreach ($hunk as [$op, $i1, $i2, $j1, $j2]) {
7373
// if there are same amount of lines replaced
7474
// we can render the inner detailed changes with corresponding lines
75+
// @todo or use LineRenderer to do the job regardless different line counts?
7576
if ($op === SequenceMatcher::OP_REP && $i2 - $i1 === $j2 - $j1) {
7677
for ($k = 0; $k < $i2 - $i1; ++$k) {
7778
$this->renderChangedExtent($lineRenderer, $old[$i1 + $k], $new[$j1 + $k]);
@@ -258,7 +259,7 @@ protected function formatStringFromLines(string $string): string
258259
/**
259260
* Replace tabs in a string with a number of spaces.
260261
*
261-
* @param string $string the containing tabs to convert
262+
* @param string $string the input string which may contain tabs
262263
* @param int $tabSize one tab = how many spaces, a negative does nothing
263264
* @param bool $onlyLeadingTabs only expand leading tabs
264265
*

‎src/Renderer/Html/Combined.php

Lines changed: 20 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -193,13 +193,15 @@ protected function renderTableBlockReplace(array $block): string
193193
// if the line counts changes, we treat the old and the new as
194194
// "a line with \n in it" and then do one-line-to-one-line diff
195195
if ($oldLinesCount !== $newLinesCount) {
196-
[$oldLines, $newLines] = $this->diffReplaceBlock($oldLines, $newLines);
196+
[$oldLines, $newLines] = $this->markReplaceBlockDiff($oldLines, $newLines);
197197
$oldLinesCount = $newLinesCount = 1;
198198
}
199199

200200
// fix for "detailLevel" is "none"
201-
$this->fixLinesForNoClosure($oldLines, RendererConstant::HTML_CLOSURES_DEL);
202-
$this->fixLinesForNoClosure($newLines, RendererConstant::HTML_CLOSURES_INS);
201+
if ($this->options['detailLevel'] === 'none') {
202+
$this->fixLinesForNoClosure($oldLines, RendererConstant::HTML_CLOSURES_DEL);
203+
$this->fixLinesForNoClosure($newLines, RendererConstant::HTML_CLOSURES_INS);
204+
}
203205

204206
// now $oldLines must has the same line counts with $newlines
205207
for ($no = 0; $no < $newLinesCount; ++$no) {
@@ -215,10 +217,11 @@ protected function renderTableBlockReplace(array $block): string
215217
}
216218

217219
/**
218-
* Merge two "replace" lines into one line.
220+
* Merge two "replace"-type lines into a single line.
219221
*
220-
* - Extract newPart in "SOME CONTENT <ins>newPart</ins> SOME CONTENT"
221-
* - Place "<ins>newPart</ins>" after "<del>oldPart</del>"
222+
* The implementation concept is that if we remove all closure parts from
223+
* the old and the new, the rest of them (cleaned line) should be the same.
224+
* And then, we add back those removed closure parts in a correct order.
222225
*
223226
* @param string $oldLine the old line
224227
* @param string $newLine the new line
@@ -242,8 +245,8 @@ protected function mergeReplaceLines(string $oldLine, string $newLine): string
242245
// create a sorted merged parts array
243246
$mergedParts = \array_merge($delParts, $insParts);
244247
\usort($mergedParts, function (array $a, array $b): int {
245-
// first sort by "offsetBiased" then by "type"
246-
return $a['offsetBiased'] <=> $b['offsetBiased']
248+
// first sort by "offsetClean" then by "type"
249+
return $a['offsetClean'] <=> $b['offsetClean']
247250
?: ($a['type'] === SequenceMatcher::OP_DEL ? -1 : 1);
248251
});
249252

@@ -269,7 +272,7 @@ protected function mergeReplaceLines(string $oldLine, string $newLine): string
269272
$part['offset'],
270273
$part['length']
271274
),
272-
$part['offsetBiased'],
275+
$part['offsetClean'],
273276
0 // insertion
274277
);
275278
}
@@ -282,18 +285,13 @@ protected function mergeReplaceLines(string $oldLine, string $newLine): string
282285
*
283286
* Such as
284287
* extract informations for "<ins>part 1</ins>" and "<ins>part 2</ins>"
285-
* from "<ins>part 1</ins>SOME OTHER TEXT<ins>part 2</ins>"
286-
*
287-
* Note that preg_match_all() is handy but slow.
288+
* from "Hello <ins>part 1</ins>SOME OTHER TEXT<ins>part 2</ins> World"
288289
*
289290
* @param string $ld the left delimiter
290291
* @param string $rd the right delimiter
291292
* @param string $line the line
292293
* @param int $type the line type
293294
*
294-
* @see https://stackoverflow.com/a/27078384/12866913 (this method)
295-
* @see https://stackoverflow.com/a/27071699/4643765 (preg_match_all)
296-
*
297295
* @return array[] the closure informations
298296
*/
299297
protected function analyzeClosureParts(string $ld, string $rd, string $line, int $type): array
@@ -303,9 +301,11 @@ protected function analyzeClosureParts(string $ld, string $rd, string $line, int
303301

304302
$parts = [];
305303
$partStart = $partEnd = 0;
306-
$offsetBias = 0;
304+
$partLengthSum = 0;
307305

306+
// find the next left delimiter
308307
while (false !== ($partStart = \strpos($line, $ld, $partEnd))) {
308+
// find the corresponding right delimiter
309309
if (false === ($partEnd = \strpos($line, $rd, $partStart + $ldLength))) {
310310
break;
311311
}
@@ -315,13 +315,14 @@ protected function analyzeClosureParts(string $ld, string $rd, string $line, int
315315

316316
$parts[] = [
317317
'type' => $type,
318+
// the offset in the line
318319
'offset' => $partStart,
319320
'length' => $partLength,
320321
// the offset in the cleaned line (i.e., the line with closure parts removed)
321-
'offsetBiased' => $partStart - $offsetBias,
322+
'offsetClean' => $partStart - $partLengthSum,
322323
];
323324

324-
$offsetBias += $partLength;
325+
$partLengthSum += $partLength;
325326
}
326327

327328
return $parts;
@@ -337,7 +338,7 @@ protected function analyzeClosureParts(string $ld, string $rd, string $line, int
337338
*
338339
* @return string[][] the value of [[$oldLine], [$newLine]]
339340
*/
340-
protected function diffReplaceBlock(array $oldBlock, array $newBlock): array
341+
protected function markReplaceBlockDiff(array $oldBlock, array $newBlock): array
341342
{
342343
static $isInitiated = false, $mbOld, $mbNew, $lineRenderer;
343344

‎src/Renderer/RendererConstant.php

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -23,6 +23,9 @@ final class RendererConstant
2323
/**
2424
* Closures that are used to enclose different parts in string.
2525
*
26+
* Arbitrary chars from the 15-16th Unicode reserved areas
27+
* and hopefully, they won't appear in source texts.
28+
*
2629
* @var string[]
2730
*/
2831
const HTML_CLOSURES = ["\u{fcffc}\u{ff2fb}", "\u{fff41}\u{fcffc}"];
@@ -44,8 +47,8 @@ final class RendererConstant
4447
/**
4548
* The delimiter to be used as the glue in string/array functions.
4649
*
47-
* this delimiter contains chars from the 15-16th Unicode reserved areas
48-
* hopefully, it won't appear in our lines
50+
* Arbitrary chars from the 15-16th Unicode reserved areas
51+
* and hopefully, it won't appear in source texts.
4952
*
5053
* @var string
5154
*/
@@ -54,7 +57,7 @@ final class RendererConstant
5457
/**
5558
* Regex range for punctuations.
5659
*
57-
* Assuming regex delimiter is "/".
60+
* Presuming the regex delimiter is "/".
5861
*
5962
* @var string
6063
*/

‎src/Renderer/Text/Context.php

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -40,12 +40,12 @@ protected function renderWorker(Differ $differ): string
4040
$ret = '';
4141

4242
foreach ($differ->getGroupedOpcodes() as $hunk) {
43-
$lastItem = \count($hunk) - 1;
43+
$lastBlockIdx = \count($hunk) - 1;
4444

4545
$i1 = $hunk[0][1];
46-
$i2 = $hunk[$lastItem][2];
46+
$i2 = $hunk[$lastBlockIdx][2];
4747
$j1 = $hunk[0][3];
48-
$j2 = $hunk[$lastItem][4];
48+
$j2 = $hunk[$lastBlockIdx][4];
4949

5050
$ret .=
5151
"***************\n" .

‎src/Renderer/Text/Unified.php

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -30,12 +30,12 @@ protected function renderWorker(Differ $differ): string
3030
$ret = '';
3131

3232
foreach ($differ->getGroupedOpcodes() as $hunk) {
33-
$lastItem = \count($hunk) - 1;
33+
$lastBlockIdx = \count($hunk) - 1;
3434

3535
$i1 = $hunk[0][1];
36-
$i2 = $hunk[$lastItem][2];
36+
$i2 = $hunk[$lastBlockIdx][2];
3737
$j1 = $hunk[0][3];
38-
$j2 = $hunk[$lastItem][4];
38+
$j2 = $hunk[$lastBlockIdx][4];
3939

4040
if ($i1 === 0 && $i2 === 0) {
4141
$i1 = $i2 = -1; // trick

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