mirror of https://github.com/cheat/cheat.git
73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package main
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import (
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"fmt"
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"os"
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"strings"
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"github.com/alecthomas/chroma/quick"
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"github.com/cheat/cheat/internal/config"
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"github.com/cheat/cheat/internal/sheets"
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)
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// cmdView displays a cheatsheet for viewing.
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func cmdView(opts map[string]interface{}, conf config.Config) {
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cheatsheet := opts["<cheatsheet>"].(string)
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// load the cheatsheets
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cheatsheets, err := sheets.Load(conf.Cheatpaths)
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if err != nil {
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fmt.Fprintln(os.Stderr, fmt.Sprintf("failed to list cheatsheets: %v", err))
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os.Exit(1)
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}
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// filter cheatcheats by tag if --tag was provided
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if opts["--tag"] != nil {
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cheatsheets = sheets.Filter(
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cheatsheets,
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strings.Split(opts["--tag"].(string), ","),
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)
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}
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// consolidate the cheatsheets found on all paths into a single map of
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// `title` => `sheet` (ie, allow more local cheatsheets to override less
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// local cheatsheets)
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consolidated := sheets.Consolidate(cheatsheets)
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// fail early if the requested cheatsheet does not exist
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sheet, ok := consolidated[cheatsheet]
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if !ok {
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fmt.Printf("No cheatsheet found for '%s'.\n", cheatsheet)
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os.Exit(0)
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}
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// if colorization is not desired, output un-colorized text and exit
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if conf.Colorize == false && opts["--colorize"] == false {
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fmt.Print(sheet.Text)
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os.Exit(0)
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}
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// otherwise, colorize the output
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// if the syntax was not specified, default to bash
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lex := sheet.Syntax
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if lex == "" {
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lex = "bash"
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}
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// apply syntax highlighting
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err = quick.Highlight(
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os.Stdout,
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sheet.Text,
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lex,
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conf.Formatter,
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conf.Style,
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)
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// if colorization somehow failed, output non-colorized text
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if err != nil {
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fmt.Print(sheet.Text)
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}
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}
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