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/* Title: Pure/Tools/fontforge.scala
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Author: Makarius
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Support for fontforge and its scripting language: see
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/usr/share/doc/fontforge/scripting.html e.g. on Ubuntu Linux installation.
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*/
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package isabelle
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import java.io.{File => JFile}
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import java.util.Locale
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object Fontforge
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{
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/** scripting language **/
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type Script = String
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/* concrete syntax */
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def string(s: String): Script =
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{
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def err(c: Char): Nothing =
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error("Bad character \\u" + String.format(Locale.ROOT, "%04x", new Integer(c)) +
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" in fontforge string " + quote(s))
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val q = if (s.contains('"')) '\'' else '"'
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def escape(c: Char): String =
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{
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if (c == '\u0000' || c == '\r' || c == q) err(c)
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else if (c == '\n') "\\n"
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else if (c == '\\') "\\\\"
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else c.toString
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}
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if (s.nonEmpty && s(0) == '\\') err('\\')
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s.iterator.map(escape(_)).mkString(q.toString, "", q.toString)
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}
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def file_name(path: Path): Script = string(File.standard_path(path))
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/* commands */
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// fonts
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def open(path: Path): Script = "Open(" + file_name(path) +")"
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def generate(path: Path): Script = "Generate(" + file_name(path) +")"
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def set_font_names(
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fontname: String = "",
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family: String = "",
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fullname: String = "",
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weight: String = "",
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copyright: String = "",
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fontversion: String = ""): Script =
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{
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List(fontname, family, fullname, weight, copyright, fontversion).map(string(_)).
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mkString("SetFontNames(", ",", ")")
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}
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// selection
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def select(args: Seq[Int]): Script = "SelectSingletons(" + args.mkString(",") + ")"
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def select_all: Script = "SelectAll()"
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def select_none: Script = "SelectNone()"
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def select_invert: Script = "SelectInvert()"
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def clear: Script = "Clear()"
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def copy: Script = "Copy()"
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def paste: Script = "Paste()"
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/** execute fontforge program **/
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def execute(script: Script, args: String = "", cwd: JFile = null): Process_Result =
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Isabelle_System.with_tmp_file("fontforge")(script_file =>
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{
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File.write(script_file, script)
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Isabelle_System.bash(File.bash_path(Path.explode("$ISABELLE_FONTFORGE")) +
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" -lang=ff -script " + File.bash_path(script_file) + " " + args)
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})
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def font_domain(path: Path): List[Int] =
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{
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val script = """
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i = 0
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while (i < CharCnt())
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if (WorthOutputting(i)); Print(i); endif
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i = i + 1
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endloop
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"""
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Library.trim_split_lines(execute(open(path) + script).check.out).
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map(Value.Int.parse)
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}
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}
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