@shockpkg/dir-projector/esm/util/mac.mjs.map

Package for creating Shockwave Director projectors

{"version":3,"file":"mac.mjs","names":["open","launcher","FAT_MAGIC","MH_MAGIC","MH_CIGAM","MH_MAGIC_64","MH_CIGAM_64","CPU_TYPE_POWERPC","CPU_TYPE_I386","machoTypesData","data","le","dv","DataView","buffer","byteOffset","byteLength","type","offset","cpuType","getUint32","cpuSubtype","magic","r","count","i","push","Error","toString","machoTypesFile","path","f","m","h","Uint8Array","bytesRead","read","subarray","v","n","d","set","close","machoAppLauncherThin","id","machoAppLauncherFat","types","align","alignSize","headD","headV","setUint32","length","pieces","total","add","pad","over","parts","body","Promise","all","map","then","piece","machoAppLauncher","Array","isArray"],"sources":["../../src/util/mac.ts"],"sourcesContent":["import {open} from 'node:fs/promises';\n\nimport {launcher} from '../util.ts';\n\nconst FAT_MAGIC = 0xcafebabe;\nconst MH_MAGIC = 0xfeedface;\nconst MH_CIGAM = 0xcefaedfe;\nconst MH_MAGIC_64 = 0xfeedfacf;\nconst MH_CIGAM_64 = 0xcffaedfe;\n\nconst CPU_TYPE_POWERPC = 0x00000012;\nconst CPU_TYPE_I386 = 0x00000007;\n\n/**\n * Mach-O type.\n */\nexport interface IMachoType {\n\t/**\n\t * CPU type.\n\t */\n\tcpuType: number;\n\n\t/**\n\t * CPU subtype.\n\t */\n\tcpuSubtype: number;\n}\n\n/**\n * Get types of Mach-O data, array if FAT binary, else a single object.\n *\n * @param data Mach-O data.\n * @returns Mach-O types.\n */\nexport function machoTypesData(data: Readonly<Uint8Array>) {\n\tlet le = false;\n\tconst dv = new DataView(data.buffer, data.byteOffset, data.byteLength);\n\n\t/**\n\t * Read type at offset.\n\t *\n\t * @param offset File offset.\n\t * @returns Type object.\n\t */\n\tconst type = (offset: number): IMachoType => ({\n\t\tcpuType: dv.getUint32(offset, le),\n\t\tcpuSubtype: dv.getUint32(offset + 4, le)\n\t});\n\n\tconst magic = dv.getUint32(0, le);\n\tswitch (magic) {\n\t\tcase FAT_MAGIC: {\n\t\t\tconst r = [];\n\t\t\tconst count = dv.getUint32(4, le);\n\t\t\tlet offset = 8;\n\t\t\tfor (let i = 0; i < count; i++) {\n\t\t\t\tr.push(type(offset));\n\t\t\t\toffset += 20;\n\t\t\t}\n\t\t\treturn r;\n\t\t}\n\t\tcase MH_MAGIC:\n\t\tcase MH_MAGIC_64: {\n\t\t\treturn type(4);\n\t\t}\n\t\tcase MH_CIGAM:\n\t\tcase MH_CIGAM_64: {\n\t\t\tle = true;\n\t\t\treturn type(4);\n\t\t}\n\t\tdefault: {\n\t\t\tthrow new Error(`Unknown header magic: 0x${magic.toString(16)}`);\n\t\t}\n\t}\n}\n\n/**\n * Get types of Mach-O file, array if FAT binary, else a single object.\n *\n * @param path Mach-O file.\n * @returns Mach-O types.\n */\nexport async function machoTypesFile(path: string) {\n\tlet data;\n\tconst f = await open(path, 'r');\n\ttry {\n\t\tconst m = 8;\n\t\tconst h = new Uint8Array(m);\n\t\tconst {bytesRead} = await f.read(h, 0, m, 0);\n\t\tif (bytesRead < m) {\n\t\t\tdata = h.subarray(0, bytesRead);\n\t\t} else {\n\t\t\tconst v = new DataView(h.buffer, h.byteOffset, h.byteLength);\n\t\t\tconst n =\n\t\t\t\tv.getUint32(0, false) === FAT_MAGIC\n\t\t\t\t\t? v.getUint32(4, false) * 20\n\t\t\t\t\t: 4;\n\t\t\tconst d = new Uint8Array(m + n);\n\t\t\td.set(h);\n\t\t\tconst {bytesRead} = await f.read(d, m, n, m);\n\t\t\tdata = d.subarray(0, m + bytesRead);\n\t\t}\n\t} finally {\n\t\tawait f.close();\n\t}\n\treturn machoTypesData(data);\n}\n\n/**\n * Get Mach-O app launcher for a single type.\n *\n * @param type Mach-O type.\n * @returns Launcher data.\n */\nexport async function machoAppLauncherThin(type: Readonly<IMachoType>) {\n\tconst {cpuType} = type;\n\tlet id = '';\n\tswitch (cpuType) {\n\t\tcase CPU_TYPE_POWERPC: {\n\t\t\tid = 'mac-app-ppc';\n\t\t\tbreak;\n\t\t}\n\t\tcase CPU_TYPE_I386: {\n\t\t\tid = 'mac-app-i386';\n\t\t\tbreak;\n\t\t}\n\t\tdefault: {\n\t\t\tthrow new Error(`Unknown CPU type: 0x${cpuType.toString(16)}`);\n\t\t}\n\t}\n\treturn launcher(id);\n}\n\n/**\n * Get Mach-O app launcher for a type list.\n *\n * @param types Mach-O types.\n * @returns Launcher data.\n */\nexport async function machoAppLauncherFat(\n\ttypes: readonly Readonly<IMachoType>[]\n) {\n\t// The lipo utility always uses 12/4096 for ppc, ppc64, i386, and x86_64.\n\tconst align = 12;\n\t// eslint-disable-next-line no-bitwise\n\tconst alignSize = (1 << align) >>> 0;\n\n\t// Create the FAT header.\n\tconst headD = new Uint8Array(8);\n\tconst headV = new DataView(\n\t\theadD.buffer,\n\t\theadD.byteOffset,\n\t\theadD.byteLength\n\t);\n\theadV.setUint32(0, FAT_MAGIC, false);\n\theadV.setUint32(4, types.length, false);\n\n\t// The pieces and their total length.\n\tconst pieces: Uint8Array[] = [headD];\n\tlet total = headD.length;\n\n\t/**\n\t * Helper to add pieces and update total length.\n\t *\n\t * @param data Data.\n\t */\n\tconst add = (data: Uint8Array) => {\n\t\tpieces.push(data);\n\t\ttotal += data.length;\n\t};\n\n\t/**\n\t * Helper to pad pieces.\n\t */\n\tconst pad = () => {\n\t\tconst over = total % alignSize;\n\t\tif (over) {\n\t\t\tadd(new Uint8Array(alignSize - over));\n\t\t}\n\t};\n\n\t// Create a head and get the body for each type.\n\tconst parts = [];\n\tfor (const {type, body} of await Promise.all(\n\t\ttypes.map(async type =>\n\t\t\tmachoAppLauncherThin(type).then(body => ({\n\t\t\t\ttype,\n\t\t\t\tbody\n\t\t\t}))\n\t\t)\n\t)) {\n\t\tconst headD = new Uint8Array(20);\n\t\tconst headV = new DataView(\n\t\t\theadD.buffer,\n\t\t\theadD.byteOffset,\n\t\t\theadD.byteLength\n\t\t);\n\t\theadV.setUint32(0, type.cpuType, false);\n\t\theadV.setUint32(4, type.cpuSubtype, false);\n\t\theadV.setUint32(16, align, false);\n\t\tparts.push({\n\t\t\theadV,\n\t\t\tbody\n\t\t});\n\t\tadd(headD);\n\t}\n\n\t// Add binaries aligned, updating their headers.\n\tfor (const {headV, body} of parts) {\n\t\tpad();\n\t\theadV.setUint32(8, total, false);\n\t\theadV.setUint32(12, body.length, false);\n\t\tadd(body);\n\t}\n\n\t// Merge all the pieces.\n\tconst r = new Uint8Array(total);\n\tlet i = 0;\n\tfor (const piece of pieces) {\n\t\tr.set(piece, i);\n\t\ti += piece.length;\n\t}\n\treturn r;\n}\n\n/**\n * Get Mach-O app launcher for a single or multiple types.\n *\n * @param types 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