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paths.ts
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import path from "path"
import os from "os"
import z from "zod"
import { type ParseError as JsoncParseError, parse as parseJsonc, printParseErrorCode } from "jsonc-parser"
import { NamedError } from "@opencode-ai/util/error"
import { Filesystem } from "@/util/filesystem"
import { Flag } from "@/flag/flag"
import { Global } from "@/global"
export namespace ConfigPaths {
export async function projectFiles(name: string, directory: string, worktree: string) {
const files: string[] = []
for (const file of [`${name}.jsonc`, `${name}.json`]) {
const found = await Filesystem.findUp(file, directory, worktree)
for (const resolved of found.toReversed()) {
files.push(resolved)
}
}
return files
}
export async function directories(directory: string, worktree: string) {
return [
Global.Path.config,
...(!Flag.OPENCODE_DISABLE_PROJECT_CONFIG
? await Array.fromAsync(
Filesystem.up({
targets: [".opencode"],
start: directory,
stop: worktree,
}),
)
: []),
...(await Array.fromAsync(
Filesystem.up({
targets: [".opencode"],
start: Global.Path.home,
stop: Global.Path.home,
}),
)),
...(Flag.OPENCODE_CONFIG_DIR ? [Flag.OPENCODE_CONFIG_DIR] : []),
]
}
export function fileInDirectory(dir: string, name: string) {
return [path.join(dir, `${name}.jsonc`), path.join(dir, `${name}.json`)]
}
export const JsonError = NamedError.create(
"ConfigJsonError",
z.object({
path: z.string(),
message: z.string().optional(),
}),
)
export const InvalidError = NamedError.create(
"ConfigInvalidError",
z.object({
path: z.string(),
issues: z.custom<z.core.$ZodIssue[]>().optional(),
message: z.string().optional(),
}),
)
/** Read a config file, returning undefined for missing files and throwing JsonError for other failures. */
export async function readFile(filepath: string) {
return Filesystem.readText(filepath).catch((err: NodeJS.ErrnoException) => {
if (err.code === "ENOENT") return
throw new JsonError({ path: filepath }, { cause: err })
})
}
type ParseSource = string | { source: string; dir: string }
function source(input: ParseSource) {
return typeof input === "string" ? input : input.source
}
function dir(input: ParseSource) {
return typeof input === "string" ? path.dirname(input) : input.dir
}
/** Apply {env:VAR} and {file:path} substitutions to config text. */
async function substitute(text: string, input: ParseSource, missing: "error" | "empty" = "error") {
text = text.replace(/\{env:([^}]+)\}/g, (_, varName) => {
return process.env[varName] || ""
})
const fileMatches = Array.from(text.matchAll(/\{file:[^}]+\}/g))
if (!fileMatches.length) return text
const configDir = dir(input)
const configSource = source(input)
let out = ""
let cursor = 0
for (const match of fileMatches) {
const token = match[0]
const index = match.index!
out += text.slice(cursor, index)
const lineStart = text.lastIndexOf("\n", index - 1) + 1
const prefix = text.slice(lineStart, index).trimStart()
if (prefix.startsWith("//")) {
out += token
cursor = index + token.length
continue
}
let filePath = token.replace(/^\{file:/, "").replace(/\}$/, "")
if (filePath.startsWith("~/")) {
filePath = path.join(os.homedir(), filePath.slice(2))
}
const resolvedPath = path.isAbsolute(filePath) ? filePath : path.resolve(configDir, filePath)
const fileContent = (
await Filesystem.readText(resolvedPath).catch((error: NodeJS.ErrnoException) => {
if (missing === "empty") return ""
const errMsg = `bad file reference: "${token}"`
if (error.code === "ENOENT") {
throw new InvalidError(
{
path: configSource,
message: errMsg + ` ${resolvedPath} does not exist`,
},
{ cause: error },
)
}
throw new InvalidError({ path: configSource, message: errMsg }, { cause: error })
})
).trim()
out += JSON.stringify(fileContent).slice(1, -1)
cursor = index + token.length
}
out += text.slice(cursor)
return out
}
/** Substitute and parse JSONC text, throwing JsonError on syntax errors. */
export async function parseText(text: string, input: ParseSource, missing: "error" | "empty" = "error") {
const configSource = source(input)
text = await substitute(text, input, missing)
const errors: JsoncParseError[] = []
const data = parseJsonc(text, errors, { allowTrailingComma: true })
if (errors.length) {
const lines = text.split("\n")
const errorDetails = errors
.map((e) => {
const beforeOffset = text.substring(0, e.offset).split("\n")
const line = beforeOffset.length
const column = beforeOffset[beforeOffset.length - 1].length + 1
const problemLine = lines[line - 1]
const error = `${printParseErrorCode(e.error)} at line ${line}, column ${column}`
if (!problemLine) return error
return `${error}\n Line ${line}: ${problemLine}\n${"".padStart(column + 9)}^`
})
.join("\n")
throw new JsonError({
path: configSource,
message: `\n--- JSONC Input ---\n${text}\n--- Errors ---\n${errorDetails}\n--- End ---`,
})
}
return data
}
}