src/hastyscribepkg/utils.nim
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import base64, os, strutils, pegs import consts proc style_tag*(css: string): string = result = "<style>$1</style>" % [css] proc style_link_tag*(css: string): string = result = "<link rel=\"stylesheet\" href=\"$1\"/>" % [css] proc encode_image*(contents, format: string): string = let enc_contents = contents.encode return "data:image/$format;base64,$enc_contents" % ["format", format, "enc_contents", enc_contents] proc encode_image_file*(file, format: string): string = if (file.fileExists): let contents = file.readFile return encode_image(contents, format) else: stderr.writeLine("Warning: image '" & file & "' not found.") return file proc image_format*(imgfile: string): string = let peg_imgformat = peg"i'.png' / i'.jpg' / i'.jpeg' / i'.gif' / i'.svg' / i'.bmp' / i'.webp' @$" return imgfile.substr(imgfile.find(peg_imgformat)+1, imgfile.len-1) proc watermark_css*(imgfile: string): string = if imgfile == "": result = "" else: let img = imgfile.encode_image_file(imgfile.image_format) result = (watermark_style % [img]).style_tag proc add_jump_to_top_links*(document: string): string = result = document.replacef(peg"{'</h' [23456] '>'}", "<a href=\"#document-top\" title=\"Go to top\"></a>$1") proc encode_font*(font, format: string): string = let enc_contents = font.encode return "data:application/$format;charset=utf-8;base64,$enc_contents" % ["format", format, "enc_contents", enc_contents] proc create_font_face*(font, family, style: string, weight: int, embed=true): string= var font_src = "" if embed: font_src = encode_font(font, "x-font-woff") else: font_src = font return """ @font-face { font-family:"$family"; src:url($font) format('woff'); font-style:$style; font-weight:$weight; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } """ % ["family", family, "font", font_src, "style", style, "weight", $weight] |