93 lines
3 KiB
Go
93 lines
3 KiB
Go
// Copyright 2016-2018, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmdutil
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import (
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"os"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/diag"
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"github.com/pulumi/pulumi/pkg/diag/colors"
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"github.com/pulumi/pulumi/pkg/util/contract"
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)
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var snk diag.Sink
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// By default we'll attempt to figure out if we should have colors or not. This can be overridden
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// for any command by passing --color=... at the command line.
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var globalColorization = colors.Auto
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// GetGlobalColorization gets the global setting for how things should be colored.
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// This is helpful for the parts of our stack that do not take a DisplayOptions struct.
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func GetGlobalColorization() colors.Colorization {
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if globalColorization != colors.Auto {
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// User has set an explicit colorization preference. We'll respect whatever they asked for,
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// no matter what.
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return globalColorization
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}
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// Colorization is set to 'auto' (either explicit set to that by the user, or not set at all).
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// Figure out the best thing to do here.
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// If the external environment has requested no colors, then turn off all colors when in 'auto' mode.
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if _, ok := os.LookupEnv("NO_COLOR"); ok {
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return colors.Never
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}
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// Disable colors if we're not in an interactive session (i.e. we're redirecting stdout). This
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// will just inject color tags into the stream which are not desirable here.
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if !InteractiveTerminal() {
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return colors.Never
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}
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// Things otherwise look good. Turn on colors.
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return colors.Always
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}
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// SetGlobalColorization sets the global setting for how things should be colored.
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// This is helpful for the parts of our stack that do not take a DisplayOptions struct.
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func SetGlobalColorization(value string) error {
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switch value {
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case "auto":
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globalColorization = colors.Auto
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case "always":
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globalColorization = colors.Always
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case "never":
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globalColorization = colors.Never
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case "raw":
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globalColorization = colors.Raw
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default:
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return errors.Errorf("unsupported color option: '%s'. Supported values are: auto, always, never, raw", value)
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}
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return nil
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}
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// Diag lazily allocates a sink to be used if we can't create a compiler.
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func Diag() diag.Sink {
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if snk == nil {
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snk = diag.DefaultSink(os.Stdout, os.Stderr, diag.FormatOptions{
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Color: GetGlobalColorization(),
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})
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}
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return snk
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}
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// InitDiag forces initialization of the diagnostics sink with the given options.
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func InitDiag(opts diag.FormatOptions) {
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contract.Assertf(snk == nil, "Cannot initialize diagnostics sink more than once")
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snk = diag.DefaultSink(os.Stdout, os.Stderr, opts)
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}
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