Function parsePatch

packages/opencode/src/patch/index.ts:185–241

(patchText: string)

}

export function parsePatch(patchText: string): { hunks: Hunk[] } {
  const cleaned = stripHeredoc(patchText.trim())
  const lines = cleaned.split("\n")
  const hunks: Hunk[] = []
  let i = 0

  // Look for Begin/End patch markers
  const beginMarker = "*** Begin Patch"
  const endMarker = "*** End Patch"

  const beginIdx = lines.findIndex((line) => line.trim() === beginMarker)
  const endIdx = lines.findIndex((line) => line.trim() === endMarker)

  if (beginIdx === -1 || endIdx === -1 || beginIdx >= endIdx) {
    throw new Error("Invalid patch format: missing Begin/End markers")
  }

  // Parse content between markers
  i = beginIdx + 1

  while (i < endIdx) {
    const header = parsePatchHeader(lines, i)
    if (!header) {
      i++
      continue
    }

    if (lines[i].startsWith("*** Add File:")) {
      const { content, nextIdx } = parseAddFileContent(lines, header.nextIdx)
      hunks.push({
        type: "add",
        path: header.filePath,
        contents: content,
      })
      i = nextIdx
    } else if (lines[i].startsWith("*** Delete File:")) {
      hunks.push({
        type: "delete",
        path: header.filePath,
      })
      i = header.nextIdx
    } else if (lines[i].startsWith("*** Update File:")) {
      const { chunks, nextIdx } = parseUpdateFileChunks(lines, header.nextIdx)
      hunks.push({
        type: "update",
        path: header.filePath,
        move_path: header.movePath,
        chunks,
      })
      i = nextIdx
    } else {
      i++
    }
  }

  return { hunks }
}