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| 1 | <?php declare(strict_types=1); |
| 2 | |
| 3 | namespace Aviat\Kilo; |
| 4 | |
| 5 | use Aviat\Kilo\Enum\RawKeyCode; |
| 6 | use Aviat\Kilo\Enum\KeyType; |
| 7 | use Aviat\Kilo\Tokens\PHP8; |
| 8 | use Aviat\Kilo\Type\Point; |
| 9 | |
| 10 | /** |
| 11 | * The representation of the current document being edited |
| 12 | * |
| 13 | * @property-read int $numRows |
| 14 | */ |
| 15 | class Document { |
| 16 | public FileType $fileType; |
| 17 | |
| 18 | // Tokens for highlighting PHP |
| 19 | public array $tokens = []; |
| 20 | |
| 21 | private function __construct( |
| 22 | public string $filename = '', |
| 23 | public array $rows = [], |
| 24 | public bool $dirty = FALSE, |
| 25 | ) { |
| 26 | $this->fileType = FileType::from($this->filename); |
| 27 | } |
| 28 | |
| 29 | public function __get(string $name): ?int |
| 30 | { |
| 31 | if ($name === 'numRows') |
| 32 | { |
| 33 | return count($this->rows); |
| 34 | } |
| 35 | |
| 36 | return NULL; |
| 37 | } |
| 38 | |
| 39 | public static function new(): self |
| 40 | { |
| 41 | return new self(); |
| 42 | } |
| 43 | |
| 44 | public function row(int $index): Row |
| 45 | { |
| 46 | return (array_key_exists($index, $this->rows)) |
| 47 | ? $this->rows[$index] |
| 48 | : Row::default(); |
| 49 | } |
| 50 | |
| 51 | public function isEmpty(): bool |
| 52 | { |
| 53 | return empty($this->rows); |
| 54 | } |
| 55 | |
| 56 | // ------------------------------------------------------------------------ |
| 57 | // ! File I/O |
| 58 | // ------------------------------------------------------------------------ |
| 59 | |
| 60 | public function open(string $filename): ?self |
| 61 | { |
| 62 | $handle = fopen($filename, 'rb'); |
| 63 | if ($handle === FALSE) |
| 64 | { |
| 65 | return NULL; |
| 66 | } |
| 67 | |
| 68 | $this->__construct($filename); |
| 69 | |
| 70 | while (($line = fgets($handle)) !== FALSE) |
| 71 | { |
| 72 | // Remove line endings when reading the file |
| 73 | $this->rows[] = Row::new($this, rtrim($line), $this->numRows); |
| 74 | } |
| 75 | |
| 76 | fclose($handle); |
| 77 | |
| 78 | $this->dirty = false; |
| 79 | $this->selectSyntaxHighlight(); |
| 80 | |
| 81 | return $this; |
| 82 | } |
| 83 | |
| 84 | public function save(): int|false |
| 85 | { |
| 86 | $contents = $this->rowsToString(); |
| 87 | |
| 88 | $res = file_put_contents($this->filename, $contents); |
| 89 | |
| 90 | if ($res === strlen($contents)) |
| 91 | { |
| 92 | $this->dirty = FALSE; |
| 93 | } |
| 94 | |
| 95 | return $res; |
| 96 | } |
| 97 | |
| 98 | public function insert(Point $at, string $c): void |
| 99 | { |
| 100 | if ($at->y > $this->numRows) |
| 101 | { |
| 102 | return; |
| 103 | } |
| 104 | |
| 105 | if ($c === KeyType::ENTER || $c === RawKeyCode::CARRIAGE_RETURN) |
| 106 | { |
| 107 | $this->insertNewline($at); |
| 108 | $this->dirty = true; |
| 109 | return; |
| 110 | } |
| 111 | |
| 112 | $this->rows[$at->y]->insert($at->x, $c); |
| 113 | $this->dirty = true; |
| 114 | } |
| 115 | |
| 116 | public function delete(Point $at): void |
| 117 | { |
| 118 | if ($at->y > $this->numRows) |
| 119 | { |
| 120 | return; |
| 121 | } |
| 122 | |
| 123 | $row =& $this->rows[$at->y]; |
| 124 | |
| 125 | if ($at->x === $this->rows[$at->y]->size && $at->y + 1 < $this->numRows) |
| 126 | { |
| 127 | $this->rows[$at->y]->append($this->rows[$at->y + 1]->chars); |
| 128 | $this->deleteRow($at->y + 1); |
| 129 | } |
| 130 | else |
| 131 | { |
| 132 | $row->delete($at->x); |
| 133 | } |
| 134 | |
| 135 | $this->dirty = true; |
| 136 | } |
| 137 | |
| 138 | public function insertRow(int $at, string $s, bool $updateSyntax = TRUE): void |
| 139 | { |
| 140 | if ($at > $this->numRows) |
| 141 | { |
| 142 | return; |
| 143 | } |
| 144 | |
| 145 | $row = Row::new($this, $s, $at); |
| 146 | |
| 147 | if ($at === $this->numRows) |
| 148 | { |
| 149 | $this->rows[] = $row; |
| 150 | } |
| 151 | else |
| 152 | { |
| 153 | $this->rows = [ |
| 154 | ...array_slice($this->rows, 0, $at), |
| 155 | $row, |
| 156 | ...array_slice($this->rows, $at), |
| 157 | ]; |
| 158 | |
| 159 | // Update indexes of each row so that correct highlighting is done |
| 160 | for ($idx = $at; $idx < $this->numRows; $idx++) |
| 161 | { |
| 162 | $this->rows[$idx]->idx = $idx; |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | ksort($this->rows); |
| 167 | |
| 168 | // $this->rows[$at]->highlight(); |
| 169 | |
| 170 | // Re-tokenize the file |
| 171 | if ($updateSyntax) |
| 172 | { |
| 173 | $this->refreshPHPSyntax(); |
| 174 | } |
| 175 | |
| 176 | $this->dirty = true; |
| 177 | } |
| 178 | |
| 179 | protected function deleteRow(int $at): void |
| 180 | { |
| 181 | if ($at < 0 || $at >= $this->numRows) |
| 182 | { |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | // Remove the row |
| 187 | unset($this->rows[$at]); |
| 188 | |
| 189 | // Re-index the array of rows |
| 190 | $this->rows = array_values($this->rows); |
| 191 | for ($i = $at; $i < $this->numRows; $i++) |
| 192 | { |
| 193 | $this->rows[$i]->idx = $i; |
| 194 | } |
| 195 | |
| 196 | // Re-tokenize the file |
| 197 | $this->refreshPHPSyntax(); |
| 198 | |
| 199 | $this->dirty = true; |
| 200 | } |
| 201 | |
| 202 | public function isDirty(): bool |
| 203 | { |
| 204 | return $this->dirty; |
| 205 | } |
| 206 | |
| 207 | protected function insertNewline(Point $at): void |
| 208 | { |
| 209 | if ($at->y > $this->numRows) |
| 210 | { |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | if ($at->y === $this->numRows) |
| 215 | { |
| 216 | $this->insertRow($this->numRows, ''); |
| 217 | } |
| 218 | else if ($at->x === 1) |
| 219 | { |
| 220 | $this->insertRow($at->y, ''); |
| 221 | } |
| 222 | else |
| 223 | { |
| 224 | $row = $this->rows[$at->y]; |
| 225 | $chars = $row->chars; |
| 226 | $newChars = substr($chars, 0, $at->x); |
| 227 | |
| 228 | // Truncate the previous row |
| 229 | $row->setChars($newChars); |
| 230 | |
| 231 | // Add a new row with the contents of the previous row at the point of the split |
| 232 | $this->insertRow($at->y + 1, substr($chars, $at->x)); |
| 233 | } |
| 234 | |
| 235 | $this->dirty = true; |
| 236 | } |
| 237 | |
| 238 | protected function selectSyntaxHighlight(): void |
| 239 | { |
| 240 | if (empty($this->filename)) |
| 241 | { |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | if ($this->fileType->name === 'PHP') |
| 246 | { |
| 247 | $this->tokens = PHP8::getFileTokens($this->filename); |
| 248 | } |
| 249 | |
| 250 | $this->refreshSyntax(); |
| 251 | } |
| 252 | |
| 253 | protected function rowsToString(): string |
| 254 | { |
| 255 | $lines = array_map(fn (Row $row) => (string)$row, $this->rows); |
| 256 | |
| 257 | return implode('', $lines); |
| 258 | } |
| 259 | |
| 260 | public function refreshSyntax(): void |
| 261 | { |
| 262 | // Update the syntax highlighting for all the rows of the file |
| 263 | array_walk($this->rows, static fn (Row $row) => $row->update()); |
| 264 | } |
| 265 | |
| 266 | private function refreshPHPSyntax(): void |
| 267 | { |
| 268 | if ($this->fileType->name !== 'PHP') |
| 269 | { |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | $this->tokens = PHP8::getTokens($this->rowsToString()); |
| 274 | $this->refreshSyntax(); |
| 275 | } |
| 276 | } |