mirror of
https://github.com/charmbracelet/glow
synced 2024-11-10 14:14:17 +00:00
34 lines
813 B
Go
34 lines
813 B
Go
package utils
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import (
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"os"
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"regexp"
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"github.com/mitchellh/go-homedir"
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)
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// RemoveFrontmatter removes the front matter header of a markdown file.
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func RemoveFrontmatter(content []byte) []byte {
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if frontmatterBoundaries := detectFrontmatter(content); frontmatterBoundaries[0] == 0 {
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return content[frontmatterBoundaries[1]:]
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}
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return content
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}
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var yamlPattern = regexp.MustCompile(`(?m)^---\r?\n(\s*\r?\n)?`)
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func detectFrontmatter(c []byte) []int {
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if matches := yamlPattern.FindAllIndex(c, 2); len(matches) > 1 {
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return []int{matches[0][0], matches[1][1]}
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}
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return []int{-1, -1}
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}
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// Expands tilde and all environment variables from the given path.
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func ExpandPath(path string) string {
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s, err := homedir.Expand(path)
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if err == nil {
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return os.ExpandEnv(s)
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}
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return os.ExpandEnv(path)
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}
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