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// vim: set softtabstop=16 shiftwidth=16:
try {
var fs = require("graceful-fs")
} catch (er) {
var fs = require("fs")
}
module.exports = readJson
var LRU = require("lru-cache")
readJson.cache = new LRU({max: 1000})
var path = require("path")
var glob = require("glob")
var normalizeData = require("normalize-package-data")
// put more stuff on here to customize.
readJson.extraSet = [
gypfile,
serverjs,
authors,
readme,
mans,
bins,
githead
]
var typoWarned = {}
function readJson (file, log_, strict_, cb_) {
var log, strict, cb
for (var i = 1; i < arguments.length - 1; i++) {
if (typeof arguments[i] === 'boolean')
strict = arguments[i]
else if (typeof arguments[i] === 'function')
log = arguments[i]
}
if (!log) log = function () {};
cb = arguments[ arguments.length - 1 ]
var c = readJson.cache.get(file)
if (c) {
cb = cb.bind(null, null, c)
return process.nextTick(cb);
}
cb = (function (orig) { return function (er, data) {
if (data) readJson.cache.set(file, data);
return orig(er, data)
} })(cb)
readJson_(file, log, strict, cb)
}
function readJson_ (file, log, strict, cb) {
fs.readFile(file, "utf8", function (er, d) {
parseJson(file, er, d, log, strict, cb)
})
}
function stripBOM(content) {
// Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
// because the buffer-to-string conversion in `fs.readFileSync()`
// translates it to FEFF, the UTF-16 BOM.
if (content.charCodeAt(0) === 0xFEFF) {
content = content.slice(1);
}
return content;
}
function parseJson (file, er, d, log, strict, cb) {
if (er && er.code === "ENOENT") {
indexjs(file, er, log, strict, cb)
return
}
if (er) return cb(er);
try {
d = JSON.parse(stripBOM(d))
} catch (er) {
d = parseIndex(d)
if (!d) return cb(parseError(er, file));
}
extras(file, d, log, strict, cb)
}
function indexjs (file, er, log, strict, cb) {
if (path.basename(file) === "index.js") {
return cb(er);
}
var index = path.resolve(path.dirname(file), "index.js")
fs.readFile(index, "utf8", function (er2, d) {
if (er2) return cb(er);
d = parseIndex(d)
if (!d) return cb(er);
extras(file, d, log, strict, cb)
})
}
readJson.extras = extras
function extras (file, data, log_, strict_, cb_) {
var log, strict, cb
for (var i = 2; i < arguments.length - 1; i++) {
if (typeof arguments[i] === 'boolean')
strict = arguments[i]
else if (typeof arguments[i] === 'function')
log = arguments[i]
}
cb = arguments[i]
var set = readJson.extraSet
var n = set.length
var errState = null
set.forEach(function (fn) {
fn(file, data, then)
})
function then(er) {
if (errState) return;
if (er) return cb(errState = er);
if (--n > 0) return;
final(file, data, log, strict, cb);
}
}
function gypfile (file, data, cb) {
var dir = path.dirname(file)
var s = data.scripts || {}
if (s.install || s.preinstall)
return cb(null, data);
glob("*.gyp", { cwd: dir }, function (er, files) {
if (er) return cb(er);
gypfile_(file, data, files, cb)
})
}
function gypfile_ (file, data, files, cb) {
if (!files.length) return cb(null, data);
var s = data.scripts || {}
s.install = "node-gyp rebuild"
data.scripts = s
data.gypfile = true
return cb(null, data);
}
function serverjs (file, data, cb) {
var dir = path.dirname(file)
var s = data.scripts || {}
if (s.start) return cb(null, data)
glob("server.js", { cwd: dir }, function (er, files) {
if (er) return cb(er);
serverjs_(file, data, files, cb)
})
}
function serverjs_ (file, data, files, cb) {
if (!files.length) return cb(null, data);
var s = data.scripts || {}
s.start = "node server.js"
data.scripts = s
return cb(null, data)
}
function authors (file, data, cb) {
if (data.contributors) return cb(null, data);
var af = path.resolve(path.dirname(file), "AUTHORS")
fs.readFile(af, "utf8", function (er, ad) {
// ignore error. just checking it.
if (er) return cb(null, data);
authors_(file, data, ad, cb)
})
}
function authors_ (file, data, ad, cb) {
ad = ad.split(/\r?\n/g).map(function (line) {
return line.replace(/^\s*#.*$/, '').trim()
}).filter(function (line) {
return line
})
data.contributors = ad
return cb(null, data)
}
var defDesc = "Unnamed repository; edit this file " +
"'description' to name the repository."
function gitDescription (file, data, cb) {
if (data.description) return cb(null, data);
var dir = path.dirname(file)
// just cuz it'd be nice if this file mattered...
var gitDesc = path.resolve(dir, '.git/description')
fs.readFile(gitDesc, 'utf8', function (er, desc) {
if (desc) desc = desc.trim()
if (!er && desc !== defDesc)
data.description = desc
return cb(null, data)
})
}
function readmeDescription (file, data) {
if (data.description) return cb(null, data);
var d = data.readme
if (!d) return;
// the first block of text before the first heading
// that isn't the first line heading
d = d.trim().split('\n')
for (var s = 0; d[s] && d[s].trim().match(/^(#|$)/); s ++);
var l = d.length
for (var e = s + 1; e < l && d[e].trim(); e ++);
data.description = d.slice(s, e).join(' ').trim()
}
function readme (file, data, cb) {
if (data.readme) return cb(null, data);
var dir = path.dirname(file)
var globOpts = { cwd: dir, nocase: true, mark: true }
glob("README?(.*)", globOpts, function (er, files) {
if (er) return cb(er);
// don't accept directories.
files = files.filter(function (file) {
return !file.match(/\/$/)
})
if (!files.length) return cb();
var rm = path.resolve(dir, files[0])
readme_(file, data, rm, cb)
})
}
function readme_(file, data, rm, cb) {
var rmfn = path.basename(rm);
fs.readFile(rm, "utf8", function (er, rm) {
// maybe not readable, or something.
if (er) return cb()
data.readme = rm
data.readmeFilename = rmfn
return cb(er, data)
})
}
function mans (file, data, cb) {
var m = data.directories && data.directories.man
if (data.man || !m) return cb(null, data);
m = path.resolve(path.dirname(file), m)
glob("**/*.[0-9]", { cwd: m }, function (er, mans) {
if (er) return cb(er);
mans_(file, data, mans, cb)
})
}
function mans_ (file, data, mans, cb) {
var m = data.directories && data.directories.man
data.man = mans.map(function (mf) {
return path.resolve(path.dirname(file), m, mf)
})
return cb(null, data)
}
function bins (file, data, cb) {
if (Array.isArray(data.bin)) {
return bins_(file, data, data.bin, cb)
}
var m = data.directories && data.directories.bin
if (data.bin || !m) return cb(null, data);
m = path.resolve(path.dirname(file), m)
glob("**", { cwd: m }, function (er, bins) {
if (er) return cb(er);
bins_(file, data, bins, cb)
})
}
function bins_ (file, data, bins, cb) {
var m = data.directories && data.directories.bin || '.'
data.bin = bins.reduce(function (acc, mf) {
if (mf && mf.charAt(0) !== '.') {
var f = path.basename(mf)
acc[f] = path.join(m, mf)
}
return acc
}, {})
return cb(null, data)
}
function githead (file, data, cb) {
if (data.gitHead) return cb(null, data);
var dir = path.dirname(file)
var head = path.resolve(dir, '.git/HEAD')
fs.readFile(head, 'utf8', function (er, head) {
if (er) return cb(null, data);
githead_(file, data, dir, head, cb)
})
}
function githead_ (file, data, dir, head, cb) {
if (!head.match(/^ref: /)) {
data.gitHead = head.trim()
return cb(null, data)
}
var headFile = head.replace(/^ref: /, '').trim()
headFile = path.resolve(dir, '.git', headFile)
fs.readFile(headFile, 'utf8', function (er, head) {
if (er || !head) return cb(null, data)
head = head.replace(/^ref: /, '').trim()
data.gitHead = head
return cb(null, data)
})
}
function final (file, data, log, strict, cb) {
var pId = makePackageId(data)
function warn(msg) {
if (typoWarned[pId]) return;
if (log) log("package.json", pId, msg);
}
try {
normalizeData(data, warn, strict)
}
catch (error) {
return cb(error)
}
typoWarned[pId] = true
readJson.cache.set(file, data)
cb(null, data)
}
function makePackageId (data) {
return cleanString(data.name) + "@" + cleanString(data.version)
}
function cleanString(str) {
return (!str || typeof(str) !== "string") ? "" : str.trim()
}
// /**package { "name": "foo", "version": "1.2.3", ... } **/
function parseIndex (data) {
data = data.split(/^\/\*\*package(?:\s|$)/m)
if (data.length < 2) return null
data = data[1]
data = data.split(/\*\*\/$/m)
if (data.length < 2) return null
data = data[0]
data = data.replace(/^\s*\*/mg, "")
try {
return JSON.parse(data)
} catch (er) {
return null
}
}
function parseError (ex, file) {
var e = new Error("Failed to parse json\n"+ex.message)
e.code = "EJSONPARSE"
e.file = file
return e
}