/* Title: Pure/Tools/update_header.scala
Author: Makarius
Replace theory header command.
*/
package isabelle
object Update_Header
{
def update_header(section: String, path: Path)
{
val text0 = File.read(path)
val text1 =
(for (tok <- Token.explode(Keyword.Keywords.empty, text0).iterator)
yield { if (tok.source == "header") section else tok.source }).mkString
if (text0 != text1) {
Output.writeln("changing " + path)
File.write_backup2(path, text1)
}
}
/* Isabelle tool wrapper */
private val headings =
Set("chapter", "section", "subsection", "subsubsection", "paragraph", "subparagraph")
val isabelle_tool =
Isabelle_Tool("update_header", "replace obsolete theory header command", args =>
{
var section = "section"
val getopts = Getopts("""
Usage: isabelle update_header [FILES|DIRS...]
Options are:
-s COMMAND alternative heading command (default 'section')
Recursively find .thy files and replace obsolete theory header commands
by 'chapter', 'section' (default), 'subsection', 'subsubsection',
'paragraph', 'subparagraph'.
Old versions of files are preserved by appending "~~".
""",
"s:" -> (arg => section = arg))
val specs = getopts(args)
if (specs.isEmpty) getopts.usage()
if (!headings.contains(section))
error("Bad heading command: " + quote(section))
for {
spec <- specs
file <- File.find_files(Path.explode(spec).file, file => file.getName.endsWith(".thy"))
} update_header(section, File.path(file))
})
}