forked from tkh44/opencode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathpatch.ts
More file actions
343 lines (297 loc) · 9.82 KB
/
patch.ts
File metadata and controls
343 lines (297 loc) · 9.82 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
import { z } from "zod"
import * as path from "path"
import * as fs from "fs/promises"
import { Tool } from "./tool"
import { FileTime } from "../file/time"
import DESCRIPTION from "./patch.txt"
const PatchParams = z.object({
patchText: z.string().describe("The full patch text that describes all changes to be made"),
})
interface Change {
type: "add" | "update" | "delete"
old_content?: string
new_content?: string
}
interface Commit {
changes: Record<string, Change>
}
interface PatchOperation {
type: "update" | "add" | "delete"
filePath: string
hunks?: PatchHunk[]
content?: string
}
interface PatchHunk {
contextLine: string
changes: PatchChange[]
}
interface PatchChange {
type: "keep" | "remove" | "add"
content: string
}
function identifyFilesNeeded(patchText: string): string[] {
const files: string[] = []
const lines = patchText.split("\n")
for (const line of lines) {
if (line.startsWith("*** Update File:") || line.startsWith("*** Delete File:")) {
const filePath = line.split(":", 2)[1]?.trim()
if (filePath) files.push(filePath)
}
}
return files
}
function identifyFilesAdded(patchText: string): string[] {
const files: string[] = []
const lines = patchText.split("\n")
for (const line of lines) {
if (line.startsWith("*** Add File:")) {
const filePath = line.split(":", 2)[1]?.trim()
if (filePath) files.push(filePath)
}
}
return files
}
function textToPatch(patchText: string, _currentFiles: Record<string, string>): [PatchOperation[], number] {
const operations: PatchOperation[] = []
const lines = patchText.split("\n")
let i = 0
let fuzz = 0
while (i < lines.length) {
const line = lines[i]
if (line.startsWith("*** Update File:")) {
const filePath = line.split(":", 2)[1]?.trim()
if (!filePath) {
i++
continue
}
const hunks: PatchHunk[] = []
i++
while (i < lines.length && !lines[i].startsWith("***")) {
if (lines[i].startsWith("@@")) {
const contextLine = lines[i].substring(2).trim()
const changes: PatchChange[] = []
i++
while (i < lines.length && !lines[i].startsWith("@@") && !lines[i].startsWith("***")) {
const changeLine = lines[i]
if (changeLine.startsWith(" ")) {
changes.push({ type: "keep", content: changeLine.substring(1) })
} else if (changeLine.startsWith("-")) {
changes.push({
type: "remove",
content: changeLine.substring(1),
})
} else if (changeLine.startsWith("+")) {
changes.push({ type: "add", content: changeLine.substring(1) })
}
i++
}
hunks.push({ contextLine, changes })
} else {
i++
}
}
operations.push({ type: "update", filePath, hunks })
} else if (line.startsWith("*** Add File:")) {
const filePath = line.split(":", 2)[1]?.trim()
if (!filePath) {
i++
continue
}
let content = ""
i++
while (i < lines.length && !lines[i].startsWith("***")) {
if (lines[i].startsWith("+")) {
content += lines[i].substring(1) + "\n"
}
i++
}
operations.push({ type: "add", filePath, content: content.slice(0, -1) })
} else if (line.startsWith("*** Delete File:")) {
const filePath = line.split(":", 2)[1]?.trim()
if (filePath) {
operations.push({ type: "delete", filePath })
}
i++
} else {
i++
}
}
return [operations, fuzz]
}
function patchToCommit(operations: PatchOperation[], currentFiles: Record<string, string>): Commit {
const changes: Record<string, Change> = {}
for (const op of operations) {
if (op.type === "delete") {
changes[op.filePath] = {
type: "delete",
old_content: currentFiles[op.filePath] || "",
}
} else if (op.type === "add") {
changes[op.filePath] = {
type: "add",
new_content: op.content || "",
}
} else if (op.type === "update" && op.hunks) {
const originalContent = currentFiles[op.filePath] || ""
const lines = originalContent.split("\n")
for (const hunk of op.hunks) {
const contextIndex = lines.findIndex((line) => line.includes(hunk.contextLine))
if (contextIndex === -1) {
throw new Error(`Context line not found: ${hunk.contextLine}`)
}
let currentIndex = contextIndex
for (const change of hunk.changes) {
if (change.type === "keep") {
currentIndex++
} else if (change.type === "remove") {
lines.splice(currentIndex, 1)
} else if (change.type === "add") {
lines.splice(currentIndex, 0, change.content)
currentIndex++
}
}
}
changes[op.filePath] = {
type: "update",
old_content: originalContent,
new_content: lines.join("\n"),
}
}
}
return { changes }
}
function generateDiff(oldContent: string, newContent: string, filePath: string): [string, number, number] {
// Mock implementation - would need actual diff generation
const lines1 = oldContent.split("\n")
const lines2 = newContent.split("\n")
const additions = Math.max(0, lines2.length - lines1.length)
const removals = Math.max(0, lines1.length - lines2.length)
return [`--- ${filePath}\n+++ ${filePath}\n`, additions, removals]
}
async function applyCommit(
commit: Commit,
writeFile: (path: string, content: string) => Promise<void>,
deleteFile: (path: string) => Promise<void>,
): Promise<void> {
for (const [filePath, change] of Object.entries(commit.changes)) {
if (change.type === "delete") {
await deleteFile(filePath)
} else if (change.new_content !== undefined) {
await writeFile(filePath, change.new_content)
}
}
}
export const PatchTool = Tool.define({
id: "patch",
description: DESCRIPTION,
parameters: PatchParams,
execute: async (params, ctx) => {
// Identify all files needed for the patch and verify they've been read
const filesToRead = identifyFilesNeeded(params.patchText)
for (const filePath of filesToRead) {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
await FileTime.assert(ctx.sessionID, absPath)
try {
const stats = await fs.stat(absPath)
if (stats.isDirectory()) {
throw new Error(`path is a directory, not a file: ${absPath}`)
}
} catch (error: any) {
if (error.code === "ENOENT") {
throw new Error(`file not found: ${absPath}`)
}
throw new Error(`failed to access file: ${error.message}`)
}
}
// Check for new files to ensure they don't already exist
const filesToAdd = identifyFilesAdded(params.patchText)
for (const filePath of filesToAdd) {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
try {
await fs.stat(absPath)
throw new Error(`file already exists and cannot be added: ${absPath}`)
} catch (error: any) {
if (error.code !== "ENOENT") {
throw new Error(`failed to check file: ${error.message}`)
}
}
}
// Load all required files
const currentFiles: Record<string, string> = {}
for (const filePath of filesToRead) {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
try {
const content = await fs.readFile(absPath, "utf-8")
currentFiles[filePath] = content
} catch (error: any) {
throw new Error(`failed to read file ${absPath}: ${error.message}`)
}
}
// Process the patch
const [patch, fuzz] = textToPatch(params.patchText, currentFiles)
if (fuzz > 3) {
throw new Error(`patch contains fuzzy matches (fuzz level: ${fuzz}). Please make your context lines more precise`)
}
// Convert patch to commit
const commit = patchToCommit(patch, currentFiles)
// Apply the changes to the filesystem
await applyCommit(
commit,
async (filePath: string, content: string) => {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
// Create parent directories if needed
const dir = path.dirname(absPath)
await fs.mkdir(dir, { recursive: true })
await fs.writeFile(absPath, content, "utf-8")
},
async (filePath: string) => {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
await fs.unlink(absPath)
},
)
// Calculate statistics
const changedFiles: string[] = []
let totalAdditions = 0
let totalRemovals = 0
for (const [filePath, change] of Object.entries(commit.changes)) {
let absPath = filePath
if (!path.isAbsolute(absPath)) {
absPath = path.resolve(process.cwd(), absPath)
}
changedFiles.push(absPath)
const oldContent = change.old_content || ""
const newContent = change.new_content || ""
// Calculate diff statistics
const [, additions, removals] = generateDiff(oldContent, newContent, filePath)
totalAdditions += additions
totalRemovals += removals
FileTime.read(ctx.sessionID, absPath)
}
const result = `Patch applied successfully. ${changedFiles.length} files changed, ${totalAdditions} additions, ${totalRemovals} removals`
const output = result
return {
title: `${filesToRead.length} files`,
metadata: {
changed: changedFiles,
additions: totalAdditions,
removals: totalRemovals,
},
output,
}
},
})