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feat: add defineQueryHandler with cacheable GET equivalence
#1448
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| // Media type helpers shared by the HTTP QUERY method utilities (RFC 10008). | ||
|
|
||
| // sf-token: ( ALPHA / "*" ) *( tchar / ":" / "/" ) — https://www.rfc-editor.org/rfc/rfc8941#section-3.3.4 | ||
| const SF_TOKEN_RE = /^[A-Za-z*][\w!#$%&'*+.^`|~:/-]*$/; | ||
| // sf-key: ( lcalpha / "*" ) *( lcalpha / DIGIT / "_" / "-" / "." / "*" ) | ||
| const SF_KEY_RE = /^[a-z*][a-z0-9_.*-]*$/; | ||
|
|
||
| /** | ||
| * Serialize media types into an `Accept-Query` header value: a | ||
| * [Structured Fields](https://www.rfc-editor.org/rfc/rfc8941) List where the | ||
| * base media type becomes a token and any `;name=value` parameters are | ||
| * emitted with their values as quoted strings. | ||
| */ | ||
| export function serializeAcceptQuery(mediaTypes: string[]): string { | ||
| return mediaTypes.map(serializeMediaType).join(", "); | ||
| } | ||
|
|
||
| /** Extract the lower-cased `type/subtype` part of a media type, dropping parameters. */ | ||
| export function baseMediaType(mediaType: string): string { | ||
| return mediaType.split(";")[0].trim().toLowerCase(); | ||
| } | ||
|
|
||
| /** Match a concrete `type/subtype` against an accepted type that may use wildcards. */ | ||
| export function mediaTypeMatches(mediaType: string, accepted: string): boolean { | ||
| if (accepted === "*/*" || accepted === "*") { | ||
| return true; | ||
| } | ||
| if (accepted === mediaType) { | ||
| return true; | ||
| } | ||
| if (accepted.endsWith("/*")) { | ||
| return mediaType.startsWith(accepted.slice(0, -1)); | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** Serialize a `type/subtype;param=value` media type into a Structured Fields item. */ | ||
| function serializeMediaType(mediaType: string): string { | ||
| const parts = splitOutsideQuotes(mediaType, ";"); | ||
| const base = parts[0].trim(); | ||
| if (!SF_TOKEN_RE.test(base)) { | ||
| throw new TypeError(`Invalid media type: ${JSON.stringify(mediaType)}`); | ||
| } | ||
| let result = base; | ||
| for (let i = 1; i < parts.length; i++) { | ||
| const param = parts[i].trim(); | ||
| if (!param) { | ||
| continue; | ||
| } | ||
| const eq = param.indexOf("="); | ||
| const key = (eq === -1 ? param : param.slice(0, eq)).trim().toLowerCase(); | ||
| if (!SF_KEY_RE.test(key)) { | ||
| throw new TypeError(`Invalid media type parameter: ${JSON.stringify(param)}`); | ||
| } | ||
| // Bare parameters serialize to the boolean `true` (an implicit `;key`). | ||
| result += | ||
| eq === -1 ? `;${key}` : `;${key}="${escapeQuotes(unquote(param.slice(eq + 1).trim()))}"`; | ||
| } | ||
| return result; | ||
| } | ||
|
|
||
| /** Split on `sep` while ignoring separators inside double-quoted strings. */ | ||
| function splitOutsideQuotes(input: string, sep: string): string[] { | ||
| const parts: string[] = []; | ||
| let current = ""; | ||
| let inQuotes = false; | ||
| for (let i = 0; i < input.length; i++) { | ||
| const ch = input[i]; | ||
| if (inQuotes) { | ||
| current += ch; | ||
| if (ch === "\\" && i + 1 < input.length) { | ||
| current += input[++i]; | ||
| } else if (ch === '"') { | ||
| inQuotes = false; | ||
| } | ||
| } else if (ch === '"') { | ||
| inQuotes = true; | ||
| current += ch; | ||
| } else if (ch === sep) { | ||
| parts.push(current); | ||
| current = ""; | ||
| } else { | ||
| current += ch; | ||
| } | ||
| } | ||
| parts.push(current); | ||
| return parts; | ||
| } | ||
|
|
||
| function escapeQuotes(value: string): string { | ||
| return value.replace(/[\\"]/g, "\\$&"); | ||
| } | ||
|
|
||
| function unquote(value: string): string { | ||
| if (value.length >= 2 && value[0] === '"' && value.endsWith('"')) { | ||
| return value.slice(1, -1).replace(/\\(.)/g, "$1"); | ||
| } | ||
| return value; | ||
| } |
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