embedded.go

/*
 * Copyright (c) 2014 Kurt Jung (Gmail: kurt.w.jung)
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

package fpdf

// Embedded standard fonts

import (
	"embed"
	"io"
	"strings"
)

//go:embed font_embed/*.json font_embed/*.map
var embFS embed.FS

func (f *Fpdf) coreFontReader(familyStr, styleStr string) (r io.ReadCloser) {
	key := familyStr + styleStr
	key = strings.ToLower(key)
	emb, err := embFS.Open("font_embed/" + key + ".json")
	if err == nil {
		r = emb
	} else {
		f.SetErrorf("could not locate \"%s\" among embedded core font definition files", key)
	}
	return
}