diff options
Diffstat (limited to 'deps/npm/node_modules/colors/lib/system/supports-colors.js')
-rw-r--r-- | deps/npm/node_modules/colors/lib/system/supports-colors.js | 128 |
1 files changed, 109 insertions, 19 deletions
diff --git a/deps/npm/node_modules/colors/lib/system/supports-colors.js b/deps/npm/node_modules/colors/lib/system/supports-colors.js index 3e008aa93a..f1f9c8ff3d 100644 --- a/deps/npm/node_modules/colors/lib/system/supports-colors.js +++ b/deps/npm/node_modules/colors/lib/system/supports-colors.js @@ -23,39 +23,129 @@ THE SOFTWARE. */ -var argv = process.argv; +'use strict'; -module.exports = (function () { - if (argv.indexOf('--no-color') !== -1 || - argv.indexOf('--color=false') !== -1) { +var os = require('os'); +var hasFlag = require('./has-flag.js'); + +var env = process.env; + +var forceColor = void 0; +if (hasFlag('no-color') || hasFlag('no-colors') || hasFlag('color=false')) { + forceColor = false; +} else if (hasFlag('color') || hasFlag('colors') || hasFlag('color=true') + || hasFlag('color=always')) { + forceColor = true; +} +if ('FORCE_COLOR' in env) { + forceColor = env.FORCE_COLOR.length === 0 + || parseInt(env.FORCE_COLOR, 10) !== 0; +} + +function translateLevel(level) { + if (level === 0) { return false; } - if (argv.indexOf('--color') !== -1 || - argv.indexOf('--color=true') !== -1 || - argv.indexOf('--color=always') !== -1) { - return true; + return { + level: level, + hasBasic: true, + has256: level >= 2, + has16m: level >= 3, + }; +} + +function supportsColor(stream) { + if (forceColor === false) { + return 0; } - if (process.stdout && !process.stdout.isTTY) { - return false; + if (hasFlag('color=16m') || hasFlag('color=full') + || hasFlag('color=truecolor')) { + return 3; + } + + if (hasFlag('color=256')) { + return 2; + } + + if (stream && !stream.isTTY && forceColor !== true) { + return 0; } + var min = forceColor ? 1 : 0; + if (process.platform === 'win32') { - return true; + // Node.js 7.5.0 is the first version of Node.js to include a patch to + // libuv that enables 256 color output on Windows. Anything earlier and it + // won't work. However, here we target Node.js 8 at minimum as it is an LTS + // release, and Node.js 7 is not. Windows 10 build 10586 is the first + // Windows release that supports 256 colors. Windows 10 build 14931 is the + // first release that supports 16m/TrueColor. + var osRelease = os.release().split('.'); + if (Number(process.versions.node.split('.')[0]) >= 8 + && Number(osRelease[0]) >= 10 && Number(osRelease[2]) >= 10586) { + return Number(osRelease[2]) >= 14931 ? 3 : 2; + } + + return 1; + } + + if ('CI' in env) { + if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI'].some(function(sign) { + return sign in env; + }) || env.CI_NAME === 'codeship') { + return 1; + } + + return min; } - if ('COLORTERM' in process.env) { - return true; + if ('TEAMCITY_VERSION' in env) { + return (/^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0 + ); } - if (process.env.TERM === 'dumb') { - return false; + if ('TERM_PROGRAM' in env) { + var version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10); + + switch (env.TERM_PROGRAM) { + case 'iTerm.app': + return version >= 3 ? 3 : 2; + case 'Hyper': + return 3; + case 'Apple_Terminal': + return 2; + // No default + } + } + + if (/-256(color)?$/i.test(env.TERM)) { + return 2; } - if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) { - return true; + if (/^screen|^xterm|^vt100|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) { + return 1; } - return false; -})();
\ No newline at end of file + if ('COLORTERM' in env) { + return 1; + } + + if (env.TERM === 'dumb') { + return min; + } + + return min; +} + +function getSupportLevel(stream) { + var level = supportsColor(stream); + return translateLevel(level); +} + +module.exports = { + supportsColor: getSupportLevel, + stdout: getSupportLevel(process.stdout), + stderr: getSupportLevel(process.stderr), +}; |