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e21cc0c0b3
Closes #1. This change allows users to add a configuration section to their slides, which allows them to specify a different theme if they would like to change the styles of the default theme. A user can add ``` --- theme: ascii --- ``` To use an ascii theme or use `theme: ./styles.json` to specify their own custom JSON theme using glamour styles. Co-authored-by: Britton Hayes <brittonhayes@users.noreply.github.com>
43 lines
977 B
Go
43 lines
977 B
Go
// Package meta implements markdown frontmatter parsing for simple
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// slides configuration
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package meta
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import (
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"strings"
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"github.com/adrg/frontmatter"
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"gopkg.in/yaml.v2"
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)
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// Meta contains all of the data to be parsed
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// out of a markdown file's header section
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type Meta struct {
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Theme string `yaml:"theme"`
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}
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// New creates a new instance of the
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// slideshow meta header object
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func New() *Meta {
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return &Meta{}
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}
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// ParseHeader parses metadata from a slideshows header slide
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// including theme information
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//
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// If no front matter is provided, it will fallback to the default theme and
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// return false to acknowledge that there is no front matter in this slide
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func (m *Meta) ParseHeader(header string) (*Meta, bool) {
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fallback := &Meta{Theme: "default"}
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bytes, err := frontmatter.Parse(strings.NewReader(header), &m)
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if err != nil {
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return fallback, false
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}
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err = yaml.Unmarshal(bytes, &m)
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if err != nil {
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return fallback, false
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}
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return m, true
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}
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