author | wenzelm |
Tue, 25 May 2021 23:04:29 +0200 | |
changeset 73782 | 4606a9cadd83 |
parent 73780 | 466fae6bf22e |
child 73783 | e4d50a660140 |
permissions | -rw-r--r-- |
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/* Title: Pure/Thy/latex.scala |
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Author: Makarius |
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Support for LaTeX. |
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*/ |
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package isabelle |
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import java.io.{File => JFile} |
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import scala.annotation.tailrec |
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import scala.util.matching.Regex |
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object Latex |
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/* output text and positions */ |
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type Text = XML.Body |
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def output(latex_text: Text, file_pos: String = ""): String = |
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{ |
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def position(a: String, b: String): String = "%:%" + a + "=" + b + "%:%" |
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var positions: List[String] = |
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if (file_pos.isEmpty) Nil |
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else List(position(Markup.FILE, file_pos), "\\endinput") |
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var line = 1 |
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var result = List.empty[String] |
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def output(body: XML.Body): Unit = |
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{ |
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body.foreach { |
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case XML.Wrapped_Elem(_, _, _) => |
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case XML.Elem(markup, body) => |
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if (markup.name == Markup.DOCUMENT_LATEX) { |
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for { l <- Position.Line.unapply(markup.properties) if positions.nonEmpty } { |
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val s = position(Value.Int(line), Value.Int(l)) |
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if (positions.head != s) positions ::= s |
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} |
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output(body) |
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} |
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case XML.Text(s) => |
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line += s.count(_ == '\n') |
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result ::= s |
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} |
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} |
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output(latex_text) |
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result.reverse.mkString + cat_lines(positions.reverse) |
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} |
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/* generated .tex file */ |
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private val File_Pattern = """^%:%file=(.+)%:%$""".r |
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private val Line_Pattern = """^*%:%(\d+)=(\d+)%:%$""".r |
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def read_tex_file(tex_file: Path): Tex_File = |
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{ |
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val positions = |
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Line.logical_lines(File.read(tex_file)).reverse. |
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takeWhile(_ != "\\endinput").reverse |
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val source_file = |
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positions match { |
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case File_Pattern(file) :: _ => Some(file) |
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case _ => None |
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} |
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val source_lines = |
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if (source_file.isEmpty) Nil |
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else |
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positions.flatMap(line => |
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line match { |
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case Line_Pattern(Value.Int(line), Value.Int(source_line)) => Some(line -> source_line) |
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case _ => None |
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}) |
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new Tex_File(tex_file, source_file, source_lines) |
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} |
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final class Tex_File private[Latex]( |
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tex_file: Path, source_file: Option[String], source_lines: List[(Int, Int)]) |
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override def toString: String = tex_file.toString |
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def source_position(l: Int): Option[Position.T] = |
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source_file match { |
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case None => None |
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case Some(file) => |
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val source_line = |
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source_lines.iterator.takeWhile({ case (m, _) => m <= l }). |
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foldLeft(0) { case (_, (_, n)) => n } |
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if (source_line == 0) None else Some(Position.Line_File(source_line, file)) |
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} |
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def position(line: Int): Position.T = |
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source_position(line) getOrElse Position.Line_File(line, tex_file.implode) |
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} |
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/* latex log */ |
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def latex_errors(dir: Path, root_name: String): List[String] = |
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{ |
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val root_log_path = dir + Path.explode(root_name).ext("log") |
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if (root_log_path.is_file) { |
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for { (msg, pos) <- filter_errors(dir, File.read(root_log_path)) } |
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yield "Latex error" + Position.here(pos) + ":\n" + Library.indent_lines(2, msg) |
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} |
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else Nil |
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} |
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def filter_errors(dir: Path, root_log: String): List[(String, Position.T)] = |
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{ |
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val seen_files = Synchronized(Map.empty[JFile, Tex_File]) |
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def check_tex_file(path: Path): Option[Tex_File] = |
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seen_files.change_result(seen => |
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seen.get(path.file) match { |
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case None => |
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if (path.is_file) { |
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val tex_file = read_tex_file(path) |
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(Some(tex_file), seen + (path.file -> tex_file)) |
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} |
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else (None, seen) |
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case some => (some, seen) |
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}) |
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def tex_file_position(path: Path, line: Int): Position.T = |
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check_tex_file(path) match { |
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case Some(tex_file) => tex_file.position(line) |
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case None => Position.Line_File(line, path.implode) |
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} |
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object File_Line_Error |
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{ |
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val Pattern: Regex = """^(.*?\.\w\w\w):(\d+): (.*)$""".r |
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def unapply(line: String): Option[(Path, Int, String)] = |
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line match { |
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case Pattern(file, Value.Int(line), message) => |
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val path = File.standard_path(file) |
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if (Path.is_wellformed(path)) { |
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val file = (dir + Path.explode(path)).canonical |
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val msg = Library.perhaps_unprefix("LaTeX Error: ", message) |
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if (file.is_file) Some((file, line, msg)) else None |
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} |
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else None |
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case _ => None |
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} |
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} |
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val Line_Error = """^l\.\d+ (.*)$""".r |
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val More_Error = |
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List( |
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"<argument>", |
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"<template>", |
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"<recently read>", |
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"<to be read again>", |
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"<inserted text>", |
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"<output>", |
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"<everypar>", |
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"<everymath>", |
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"<everydisplay>", |
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"<everyhbox>", |
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"<everyvbox>", |
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"<everyjob>", |
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"<everycr>", |
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"<mark>", |
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"<everyeof>", |
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"<write>").mkString("^(?:", "|", ") (.*)$").r |
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val Bad_Font = """^LaTeX Font Warning: (Font .*\btxmia\b.* undefined).*$""".r |
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val Bad_File = """^! LaTeX Error: (File `.*' not found\.)$""".r |
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val error_ignore = |
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Set( |
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"See the LaTeX manual or LaTeX Companion for explanation.", |
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"Type H <return> for immediate help.") |
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def error_suffix1(lines: List[String]): Option[String] = |
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{ |
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val lines1 = |
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lines.take(20).takeWhile({ case File_Line_Error((_, _, _)) => false case _ => true }) |
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lines1.zipWithIndex.collectFirst({ |
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case (Line_Error(msg), i) => |
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cat_lines(lines1.take(i).filterNot(error_ignore) ::: List(msg)) }) |
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} |
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def error_suffix2(lines: List[String]): Option[String] = |
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lines match { |
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case More_Error(msg) :: _ => Some(msg) |
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case _ => None |
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} |
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|
67173 | 198 |
@tailrec def filter(lines: List[String], result: List[(String, Position.T)]) |
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: List[(String, Position.T)] = |
|
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{ |
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67172 | 201 |
lines match { |
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case File_Line_Error((file, line, msg1)) :: rest1 => |
67183 | 203 |
val pos = tex_file_position(file, line) |
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val msg2 = error_suffix1(rest1) orElse error_suffix2(rest1) getOrElse "" |
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filter(rest1, (Exn.cat_message(msg1, msg2), pos) :: result) |
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case Bad_Font(msg) :: rest => |
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filter(rest, (msg, Position.none) :: result) |
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case Bad_File(msg) :: rest => |
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filter(rest, (msg, Position.none) :: result) |
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case _ :: rest => filter(rest, result) |
211 |
case Nil => result.reverse |
|
212 |
} |
|
67173 | 213 |
} |
67172 | 214 |
|
67174 | 215 |
filter(Line.logical_lines(root_log), Nil) |
67173 | 216 |
} |
67172 | 217 |
} |