{"version":3,"file":"edit-diff.d.ts","sourceRoot":"","sources":["../../../src/core/tools/edit-diff.ts"],"names":[],"mappings":"AAAA;;;GAGG;AAOH,wBAAgB,gBAAgB,CAAC,OAAO,EAAE,MAAM,GAAG,MAAM,GAAG,IAAI,CAM/D;AAED,wBAAgB,aAAa,CAAC,IAAI,EAAE,MAAM,GAAG,MAAM,CAElD;AAED,wBAAgB,kBAAkB,CAAC,IAAI,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,GAAG,IAAI,GAAG,MAAM,CAE9E;AAED;;;;;;GAMG;AACH,wBAAgB,sBAAsB,CAAC,IAAI,EAAE,MAAM,GAAG,MAAM,CAqB3D;AAED,MAAM,WAAW,gBAAgB;IAChC,gCAAgC;IAChC,KAAK,EAAE,OAAO,CAAC;IACf,4FAA4F;IAC5F,KAAK,EAAE,MAAM,CAAC;IACd,iCAAiC;IACjC,WAAW,EAAE,MAAM,CAAC;IACpB,4DAA4D;IAC5D,cAAc,EAAE,OAAO,CAAC;IACxB;;;OAGG;IACH,qBAAqB,EAAE,MAAM,CAAC;CAC9B;AAED;;;;;GAKG;AACH,wBAAgB,aAAa,CAAC,OAAO,EAAE,MAAM,EAAE,OAAO,EAAE,MAAM,GAAG,gBAAgB,CAsChF;AAED,uFAAuF;AACvF,wBAAgB,QAAQ,CAAC,OAAO,EAAE,MAAM,GAAG;IAAE,GAAG,EAAE,MAAM,CAAC;IAAC,IAAI,EAAE,MAAM,CAAA;CAAE,CAEvE;AAED;;;GAGG;AACH,wBAAgB,kBAAkB,CACjC,UAAU,EAAE,MAAM,EAClB,UAAU,EAAE,MAAM,EAClB,YAAY,SAAI,GACd;IAAE,IAAI,EAAE,MAAM,CAAC;IAAC,gBAAgB,EAAE,MAAM,GAAG,SAAS,CAAA;CAAE,CAgGxD;AAED,MAAM,WAAW,cAAc;IAC9B,IAAI,EAAE,MAAM,CAAC;IACb,gBAAgB,EAAE,MAAM,GAAG,SAAS,CAAC;CACrC;AAED,MAAM,WAAW,aAAa;IAC7B,KAAK,EAAE,MAAM,CAAC;CACd;AAED;;;GAGG;AACH,wBAAsB,eAAe,CACpC,IAAI,EAAE,MAAM,EACZ,OAAO,EAAE,MAAM,EACf,OAAO,EAAE,MAAM,EACf,GAAG,EAAE,MAAM,GACT,OAAO,CAAC,cAAc,GAAG,aAAa,CAAC,CA6DzC","sourcesContent":["/**\n * Shared diff computation utilities for the edit tool.\n * Used by both edit.ts (for execution) and tool-execution.ts (for preview rendering).\n */\n\nimport * as Diff from \"diff\";\nimport { constants } from \"fs\";\nimport { access, readFile } from \"fs/promises\";\nimport { resolveToCwd } from \"./path-utils.js\";\n\nexport function detectLineEnding(content: string): \"\\r\\n\" | \"\\n\" {\n\tconst crlfIdx = content.indexOf(\"\\r\\n\");\n\tconst lfIdx = content.indexOf(\"\\n\");\n\tif (lfIdx === -1) return \"\\n\";\n\tif (crlfIdx === -1) return \"\\n\";\n\treturn crlfIdx < lfIdx ? \"\\r\\n\" : \"\\n\";\n}\n\nexport function normalizeToLF(text: string): string {\n\treturn text.replace(/\\r\\n/g, \"\\n\").replace(/\\r/g, \"\\n\");\n}\n\nexport function restoreLineEndings(text: string, ending: \"\\r\\n\" | \"\\n\"): string {\n\treturn ending === \"\\r\\n\" ? text.replace(/\\n/g, \"\\r\\n\") : text;\n}\n\n/**\n * Normalize text for fuzzy matching. Applies progressive transformations:\n * - Strip trailing whitespace from each line\n * - Normalize smart quotes to ASCII equivalents\n * - Normalize Unicode dashes/hyphens to ASCII hyphen\n * - Normalize special Unicode spaces to regular space\n */\nexport function normalizeForFuzzyMatch(text: string): string {\n\treturn (\n\t\ttext\n\t\t\t.normalize(\"NFKC\")\n\t\t\t// Strip trailing whitespace per line\n\t\t\t.split(\"\\n\")\n\t\t\t.map((line) => line.trimEnd())\n\t\t\t.join(\"\\n\")\n\t\t\t// Smart single quotes → '\n\t\t\t.replace(/[\\u2018\\u2019\\u201A\\u201B]/g, \"'\")\n\t\t\t// Smart double quotes → \"\n\t\t\t.replace(/[\\u201C\\u201D\\u201E\\u201F]/g, '\"')\n\t\t\t// Various dashes/hyphens → -\n\t\t\t// U+2010 hyphen, U+2011 non-breaking hyphen, U+2012 figure dash,\n\t\t\t// U+2013 en-dash, U+2014 em-dash, U+2015 horizontal bar, U+2212 minus\n\t\t\t.replace(/[\\u2010\\u2011\\u2012\\u2013\\u2014\\u2015\\u2212]/g, \"-\")\n\t\t\t// Special spaces → regular space\n\t\t\t// U+00A0 NBSP, U+2002-U+200A various spaces, U+202F narrow NBSP,\n\t\t\t// U+205F medium math space, U+3000 ideographic space\n\t\t\t.replace(/[\\u00A0\\u2002-\\u200A\\u202F\\u205F\\u3000]/g, \" \")\n\t);\n}\n\nexport interface FuzzyMatchResult {\n\t/** Whether a match was found */\n\tfound: boolean;\n\t/** The index where the match starts (in the content that should be used for replacement) */\n\tindex: number;\n\t/** Length of the matched text */\n\tmatchLength: number;\n\t/** Whether fuzzy matching was used (false = exact match) */\n\tusedFuzzyMatch: boolean;\n\t/**\n\t * The content to use for replacement operations.\n\t * When exact match: original content. When fuzzy match: normalized content.\n\t */\n\tcontentForReplacement: string;\n}\n\n/**\n * Find oldText in content, trying exact match first, then fuzzy match.\n * When fuzzy matching is used, the returned contentForReplacement is the\n * fuzzy-normalized version of the content (trailing whitespace stripped,\n * Unicode quotes/dashes normalized to ASCII).\n */\nexport function fuzzyFindText(content: string, oldText: string): FuzzyMatchResult {\n\t// Try exact match first\n\tconst exactIndex = content.indexOf(oldText);\n\tif (exactIndex !== -1) {\n\t\treturn {\n\t\t\tfound: true,\n\t\t\tindex: exactIndex,\n\t\t\tmatchLength: oldText.length,\n\t\t\tusedFuzzyMatch: false,\n\t\t\tcontentForReplacement: content,\n\t\t};\n\t}\n\n\t// Try fuzzy match - work entirely in normalized space\n\tconst fuzzyContent = normalizeForFuzzyMatch(content);\n\tconst fuzzyOldText = normalizeForFuzzyMatch(oldText);\n\tconst fuzzyIndex = fuzzyContent.indexOf(fuzzyOldText);\n\n\tif (fuzzyIndex === -1) {\n\t\treturn {\n\t\t\tfound: false,\n\t\t\tindex: -1,\n\t\t\tmatchLength: 0,\n\t\t\tusedFuzzyMatch: false,\n\t\t\tcontentForReplacement: content,\n\t\t};\n\t}\n\n\t// When fuzzy matching, we work in the normalized space for replacement.\n\t// This means the output will have normalized whitespace/quotes/dashes,\n\t// which is acceptable since we're fixing minor formatting differences anyway.\n\treturn {\n\t\tfound: true,\n\t\tindex: fuzzyIndex,\n\t\tmatchLength: fuzzyOldText.length,\n\t\tusedFuzzyMatch: true,\n\t\tcontentForReplacement: fuzzyContent,\n\t};\n}\n\n/** Strip UTF-8 BOM if present, return both the BOM (if any) and the text without it */\nexport function stripBom(content: string): { bom: string; text: string } {\n\treturn content.startsWith(\"\\uFEFF\") ? { bom: \"\\uFEFF\", text: content.slice(1) } : { bom: \"\", text: content };\n}\n\n/**\n * Generate a unified diff string with line numbers and context.\n * Returns both the diff string and the first changed line number (in the new file).\n */\nexport function generateDiffString(\n\toldContent: string,\n\tnewContent: string,\n\tcontextLines = 4,\n): { diff: string; firstChangedLine: number | undefined } {\n\tconst parts = Diff.diffLines(oldContent, newContent);\n\tconst output: string[] = [];\n\n\tconst oldLines = oldContent.split(\"\\n\");\n\tconst newLines = newContent.split(\"\\n\");\n\tconst maxLineNum = Math.max(oldLines.length, newLines.length);\n\tconst lineNumWidth = String(maxLineNum).length;\n\n\tlet oldLineNum = 1;\n\tlet newLineNum = 1;\n\tlet lastWasChange = false;\n\tlet firstChangedLine: number | undefined;\n\n\tfor (let i = 0; i < parts.length; i++) {\n\t\tconst part = parts[i];\n\t\tconst raw = part.value.split(\"\\n\");\n\t\tif (raw[raw.length - 1] === \"\") {\n\t\t\traw.pop();\n\t\t}\n\n\t\tif (part.added || part.removed) {\n\t\t\t// Capture the first changed line (in the new file)\n\t\t\tif (firstChangedLine === undefined) {\n\t\t\t\tfirstChangedLine = newLineNum;\n\t\t\t}\n\n\t\t\t// Show the change\n\t\t\tfor (const line of raw) {\n\t\t\t\tif (part.added) {\n\t\t\t\t\tconst lineNum = String(newLineNum).padStart(lineNumWidth, \" \");\n\t\t\t\t\toutput.push(`+${lineNum} ${line}`);\n\t\t\t\t\tnewLineNum++;\n\t\t\t\t} else {\n\t\t\t\t\t// removed\n\t\t\t\t\tconst lineNum = String(oldLineNum).padStart(lineNumWidth, \" \");\n\t\t\t\t\toutput.push(`-${lineNum} ${line}`);\n\t\t\t\t\toldLineNum++;\n\t\t\t\t}\n\t\t\t}\n\t\t\tlastWasChange = true;\n\t\t} else {\n\t\t\t// Context lines - only show a few before/after changes\n\t\t\tconst nextPartIsChange = i < parts.length - 1 && (parts[i + 1].added || parts[i + 1].removed);\n\n\t\t\tif (lastWasChange || nextPartIsChange) {\n\t\t\t\t// Show context\n\t\t\t\tlet linesToShow = raw;\n\t\t\t\tlet skipStart = 0;\n\t\t\t\tlet skipEnd = 0;\n\n\t\t\t\tif (!lastWasChange) {\n\t\t\t\t\t// Show only last N lines as leading context\n\t\t\t\t\tskipStart = Math.max(0, raw.length - contextLines);\n\t\t\t\t\tlinesToShow = raw.slice(skipStart);\n\t\t\t\t}\n\n\t\t\t\tif (!nextPartIsChange && linesToShow.length > contextLines) {\n\t\t\t\t\t// Show only first N lines as trailing context\n\t\t\t\t\tskipEnd = linesToShow.length - contextLines;\n\t\t\t\t\tlinesToShow = linesToShow.slice(0, contextLines);\n\t\t\t\t}\n\n\t\t\t\t// Add ellipsis if we skipped lines at start\n\t\t\t\tif (skipStart > 0) {\n\t\t\t\t\toutput.push(` ${\"\".padStart(lineNumWidth, \" \")} ...`);\n\t\t\t\t\t// Update line numbers for the skipped leading context\n\t\t\t\t\toldLineNum += skipStart;\n\t\t\t\t\tnewLineNum += skipStart;\n\t\t\t\t}\n\n\t\t\t\tfor (const line of linesToShow) {\n\t\t\t\t\tconst lineNum = String(oldLineNum).padStart(lineNumWidth, \" \");\n\t\t\t\t\toutput.push(` ${lineNum} ${line}`);\n\t\t\t\t\toldLineNum++;\n\t\t\t\t\tnewLineNum++;\n\t\t\t\t}\n\n\t\t\t\t// Add ellipsis if we skipped lines at end\n\t\t\t\tif (skipEnd > 0) {\n\t\t\t\t\toutput.push(` ${\"\".padStart(lineNumWidth, \" \")} ...`);\n\t\t\t\t\t// Update line numbers for the skipped trailing context\n\t\t\t\t\toldLineNum += skipEnd;\n\t\t\t\t\tnewLineNum += skipEnd;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// Skip these context lines entirely\n\t\t\t\toldLineNum += raw.length;\n\t\t\t\tnewLineNum += raw.length;\n\t\t\t}\n\n\t\t\tlastWasChange = false;\n\t\t}\n\t}\n\n\treturn { diff: output.join(\"\\n\"), firstChangedLine };\n}\n\nexport interface EditDiffResult {\n\tdiff: string;\n\tfirstChangedLine: number | undefined;\n}\n\nexport interface EditDiffError {\n\terror: string;\n}\n\n/**\n * Compute the diff for an edit operation without applying it.\n * Used for preview rendering in the TUI before the tool executes.\n */\nexport async function computeEditDiff(\n\tpath: string,\n\toldText: string,\n\tnewText: string,\n\tcwd: string,\n): Promise<EditDiffResult | EditDiffError> {\n\tconst absolutePath = resolveToCwd(path, cwd);\n\n\ttry {\n\t\t// Check if file exists and is readable\n\t\ttry {\n\t\t\tawait access(absolutePath, constants.R_OK);\n\t\t} catch {\n\t\t\treturn { error: `File not found: ${path}` };\n\t\t}\n\n\t\t// Read the file\n\t\tconst rawContent = await readFile(absolutePath, \"utf-8\");\n\n\t\t// Strip BOM before matching (LLM won't include invisible BOM in oldText)\n\t\tconst { text: content } = stripBom(rawContent);\n\n\t\tconst normalizedContent = normalizeToLF(content);\n\t\tconst normalizedOldText = normalizeToLF(oldText);\n\t\tconst normalizedNewText = normalizeToLF(newText);\n\n\t\t// Find the old text using fuzzy matching (tries exact match first, then fuzzy)\n\t\tconst matchResult = fuzzyFindText(normalizedContent, normalizedOldText);\n\n\t\tif (!matchResult.found) {\n\t\t\treturn {\n\t\t\t\terror: `Could not find the exact text in ${path}. The old text must match exactly including all whitespace and newlines.`,\n\t\t\t};\n\t\t}\n\n\t\t// Count occurrences using fuzzy-normalized content for consistency\n\t\tconst fuzzyContent = normalizeForFuzzyMatch(normalizedContent);\n\t\tconst fuzzyOldText = normalizeForFuzzyMatch(normalizedOldText);\n\t\tconst occurrences = fuzzyContent.split(fuzzyOldText).length - 1;\n\n\t\tif (occurrences > 1) {\n\t\t\treturn {\n\t\t\t\terror: `Found ${occurrences} occurrences of the text in ${path}. The text must be unique. Please provide more context to make it unique.`,\n\t\t\t};\n\t\t}\n\n\t\t// Compute the new content using the matched position\n\t\t// When fuzzy matching was used, contentForReplacement is the normalized version\n\t\tconst baseContent = matchResult.contentForReplacement;\n\t\tconst newContent =\n\t\t\tbaseContent.substring(0, matchResult.index) +\n\t\t\tnormalizedNewText +\n\t\t\tbaseContent.substring(matchResult.index + matchResult.matchLength);\n\n\t\t// Check if it would actually change anything\n\t\tif (baseContent === newContent) {\n\t\t\treturn {\n\t\t\t\terror: `No changes would be made to ${path}. The replacement produces identical content.`,\n\t\t\t};\n\t\t}\n\n\t\t// Generate the diff\n\t\treturn generateDiffString(baseContent, newContent);\n\t} catch (err) {\n\t\treturn { error: err instanceof Error ? err.message : String(err) };\n\t}\n}\n"]}