105 lines
3.4 KiB
Go
105 lines
3.4 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 colors
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import (
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"fmt"
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"strings"
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"github.com/reconquest/loreley"
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"github.com/pulumi/pulumi/pkg/util/contract"
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)
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const colorLeft = "<{%"
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const colorRight = "%}>"
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func init() {
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// Change the Loreley delimiters from { and }, to something more complex, to avoid accidental collisions.
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loreley.DelimLeft = colorLeft
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loreley.DelimRight = colorRight
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}
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func Command(s string) string {
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return colorLeft + s + colorRight
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}
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func Colorize(s fmt.Stringer) string {
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txt := s.String()
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return colorizeText(txt)
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}
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func colorizeText(s string) string {
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c, err := loreley.CompileAndExecuteToString(s, nil, nil)
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contract.Assertf(err == nil, "Expected no errors during string colorization; str=%v, err=%v", s, err)
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return c
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}
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// Highlight takes an input string, a sequence of commands, and replaces all occurrences of that string with
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// a "highlighted" version surrounded by those commands and a final reset afterwards.
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func Highlight(s, text, commands string) string {
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return strings.Replace(s, text, commands+text+Reset, -1)
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}
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// Basic colors.
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var (
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Black = Command("fg 0")
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Red = Command("fg 1")
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Green = Command("fg 2")
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Yellow = Command("fg 3")
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Blue = Command("fg 4")
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Magenta = Command("fg 5")
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Cyan = Command("fg 6")
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White = Command("fg 7")
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BrightBlack = Command("fg 8")
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BrightRed = Command("fg 9")
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BrightGreen = Command("fg 10")
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BrightYellow = Command("fg 11")
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BrightBlue = Command("fg 12")
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BrightMagenta = Command("fg 13")
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BrightCyan = Command("fg 14")
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BrightWhite = Command("fg 15")
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)
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var (
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Bold = Command("bold")
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Underline = Command("underline")
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)
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var Reset = Command("reset")
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// Special predefined colors for logical conditions.
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var (
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SpecImportant = BrightYellow // for particularly noteworthy messages.
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SpecUnimportant = BrightBlack // for notes that can be skimmed or aren't very important.
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SpecDebug = SpecUnimportant // for debugging.
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SpecInfo = Magenta // for information.
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SpecError = Red // for errors.
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SpecWarning = Yellow // for warnings.
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SpecLocation = Cyan // for source locations.
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SpecAttention = BrightRed // for messages that are meant to grab attention.
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SpecNote = White // for simple notes.
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SpecCreate = Green // for adds (in the diff sense).
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SpecUpdate = BrightYellow // for changes (in the diff sense).
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SpecRead = BrightWhite // for reads (relatively unimportant).
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SpecReplace = Yellow // for replacements (in the diff sense).
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SpecDelete = Red // for deletes (in the diff sense).
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SpecCreateReplacement = BrightGreen // for replacement creates (in the diff sense).
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SpecDeleteReplaced = BrightRed // for replacement deletes (in the diff sense).
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)
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