--- /dev/null
+/**\r
+ * StandardEngine class\r
+ * Standard registration of actions\r
+ * Implemented as a subclass of Engine for no good reason\r
+ *\r
+ * @author Daniel Jackson\r
+ * @version 0, 07/08/01\r
+ */\r
+\r
+package tagger;\r
+import java.io.*;\r
+import java.util.*;\r
+\r
+public class StandardEngine extends Engine {\r
+\r
+ static Engine STANDARD;\r
+\r
+ // reserved words for property files\r
+\r
+ // character table\r
+ static final String index_prop_name = "index";\r
+ static final String font_prop_name = "font";\r
+\r
+ static final String apostrophe_char_name = "quoteright";\r
+ static final String prime_char_name = "prime";\r
+ static final String opensinglequote_char_name = "quoteleft";\r
+ static final String closesinglequote_char_name = "quoteright";\r
+ static final String opendoublequote_char_name = "quotedblleft";\r
+ static final String closedoublequote_char_name = "quotedblright";\r
+ static final String hyphen_char_name = "hyphen";\r
+ static final String endash_char_name = "endash";\r
+ static final String emdash_char_name = "emdash";\r
+ static final String period_char_name = "period";\r
+ static final String twodotleader_char_name = "twodotleader";\r
+ static final String ellipsis_char_name = "ellipsis";\r
+\r
+ static final String ROMAN_COMMANDNAME = "roman";\r
+ static final String BOLD_COMMANDNAME = "bold";\r
+ static final String ITALICS_COMMANDNAME = "italic";\r
+ static final String SUBSCRIPT_COMMANDNAME = "sub";\r
+ static final String SUPERSCRIPT_COMMANDNAME = "sup";\r
+\r
+ // style sheet\r
+ static final String next_style_prop_name = "next";\r
+ static final String default_style_name = "body";\r
+\r
+ public StandardEngine (\r
+ final Generator generator,\r
+ final PropertyMap style_map,\r
+ final PrintStream error_stream, final PrintStream index_stream\r
+ ) {\r
+\r
+ final PropertyMap char_map = new PropertyMap ();\r
+ final Numbering numbering = new Numbering (style_map, error_stream);\r
+\r
+ // a hack to work around lack of proper closures in Java\r
+ // can't assign to local variable within actions\r
+ class StringBox {\r
+ String string;\r
+ StringBox (String s) {string = s;}\r
+ void set (String s) {string = s;}\r
+ }\r
+ final StringBox current_para_style = new StringBox (default_style_name);\r
+\r
+ // special action for start of paragraph\r
+ // created once, but dynamically inserted and removed\r
+ // so that it's performed once at the start of each paragraph\r
+ final Action paragraph_action = new Action () {\r
+ boolean first_para = true;\r
+ public void perform (Token t, Iterator iter) {\r
+ if (t.type != Token.PARASTYLECOMMAND) {\r
+ if (!first_para) generator.linefeed ();\r
+ generator.new_para (current_para_style.string);\r
+ String numstr = numbering.get_numbering_string (current_para_style.string);\r
+ if (numstr.length() != 0) {\r
+ // display numbering as evidence of progress\r
+ error_stream.println (numstr);\r
+ /*\r
+ // this doesn't work. not sure why.\r
+ // because it becomes a recursive call!\r
+ // need an impoverished engine specially for this, without paras?\r
+\r
+ Reader numreader = new StringReader (numstr);\r
+ try {\r
+ Tagger.consume_source (StandardEngine.STANDARD, style_map, numreader);\r
+ }\r
+ catch (IOException e) {Assert.unreachable ();}\r
+ */\r
+ generator.plaintext (numstr);\r
+ }\r
+\r
+ iter.remove ();\r
+ first_para = false;\r
+ }\r
+ }};\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.plaintext (t.arg);\r
+ }},\r
+ Token.ALPHABETIC);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.plaintext (t.arg);\r
+ }},\r
+ Token.NUMERIC);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.plaintext (t.arg);\r
+ }},\r
+ Token.WHITESPACE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.new_line ();\r
+ }},\r
+ Token.LINEBREAK);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, apostrophe_char_name, error_stream, t.line);\r
+ }},\r
+ Token.APOSTROPHE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, prime_char_name, error_stream, t.line);\r
+ }},\r
+ Token.PRIME);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, opensinglequote_char_name, error_stream, t.line);\r
+ }},\r
+ Token.OPENSINGLEQUOTE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, closesinglequote_char_name, error_stream, t.line);\r
+ }},\r
+ Token.CLOSESINGLEQUOTE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, opendoublequote_char_name, error_stream, t.line);\r
+ }},\r
+ Token.OPENDOUBLEQUOTE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ put_special_char (generator, char_map, closedoublequote_char_name, error_stream, t.line);\r
+ }},\r
+ Token.CLOSEDOUBLEQUOTE);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ int len = t.arg.length ();\r
+ if (len == 1)\r
+ put_special_char (generator, char_map, hyphen_char_name, error_stream, t.line);\r
+ else if (len == 2)\r
+ put_special_char (generator, char_map, endash_char_name, error_stream, t.line);\r
+ else if (len == 3)\r
+ put_special_char (generator, char_map, emdash_char_name, error_stream, t.line);\r
+ else\r
+ error_stream.println (t.line + ": Too many hyphens: " + t.arg);\r
+ }},\r
+ Token.HYPHENS);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ int len = t.arg.length ();\r
+ if (len == 1)\r
+ generator.plaintext (".");\r
+ else if (len == 2)\r
+ put_special_char (generator, char_map, twodotleader_char_name, error_stream, t.line);\r
+ else if (len == 3)\r
+ put_special_char (generator, char_map, ellipsis_char_name, error_stream, t.line);\r
+ else\r
+ error_stream.println (t.line + ": Too many dots: " + t.arg);\r
+ }},\r
+ Token.DOTS);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ // open file with given name and load char map from it\r
+ String file_name = t.arg;\r
+ try {\r
+ File f = new File (file_name);\r
+ FileInputStream s = new FileInputStream (f);\r
+ InputStreamReader r = new InputStreamReader (s);\r
+ PropertyParser p = new PropertyParser (r, error_stream);\r
+ char_map.incorporate (p);\r
+ } catch (IOException e) {\r
+ error_stream.println (t.line + ": Can't open char map file: " + file_name);\r
+ }\r
+ }},\r
+ Token.LOADCHARMAPCOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ // open file with given name and load char map from it\r
+ String file_name = t.arg;\r
+ try {\r
+ File f = new File (file_name);\r
+ FileInputStream s = new FileInputStream (f);\r
+ InputStreamReader r = new InputStreamReader (s);\r
+ PropertyParser p = new PropertyParser (r, error_stream);\r
+ style_map.incorporate (p);\r
+ numbering.incorporate ();\r
+ } catch (IOException e) {\r
+ error_stream.println (t.line + ": Can't open style sheet file: " + file_name);\r
+ }\r
+ }},\r
+ Token.LOADSTYLESHEETCOMMAND);\r
+\r
+ final Action unsuppress_action = new Action () {\r
+ public void perform (Token t, Iterator i) {\r
+ generator.suppress_off ();\r
+ i.remove ();\r
+ }};\r
+\r
+ // preamble command switches on output suppression\r
+ // registers action to turn suppression off with paragraph break command\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.suppress_on ();\r
+ register_by_type (unsuppress_action, Token.PARABREAK);\r
+ }},\r
+ Token.PREAMBLECOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ String next_style = style_map.get_property (current_para_style.string, next_style_prop_name);\r
+ if (next_style == null) {\r
+ error_stream.println (t.line + ": No next style property given for style: " + current_para_style.string);\r
+ return;\r
+ }\r
+ current_para_style.set (next_style);\r
+ register_for_all (paragraph_action);\r
+ }},\r
+ Token.PARABREAK);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ current_para_style.set (t.arg);\r
+ }},\r
+ Token.PARASTYLECOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ String index = char_map.get_property (t.arg, index_prop_name);\r
+ if (index == null) {\r
+ error_stream.println (t.line + ": No index property given for character: " + t.arg);\r
+ return;\r
+ }\r
+ String font = char_map.get_property (t.arg, font_prop_name);\r
+ // if no font is listed, generate special character in standard font\r
+ if (font == null)\r
+ generator.special_char (index);\r
+ else\r
+ generator.special_char (font, index);\r
+ }},\r
+ Token.CHARCOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ boolean italic_mode_on = false;\r
+ public void perform (Token t) {\r
+ if (italic_mode_on) {\r
+ italic_mode_on = false;\r
+ generator.pop_format ();\r
+ }\r
+ else {\r
+ italic_mode_on = true;\r
+ generator.push_format (Generator.ITALICS);\r
+ }\r
+ }},\r
+ Token.UNDERSCORE);\r
+\r
+ // used to italicize alphabetic tokens in math mode\r
+ final Action push_italics_action = new Action () {\r
+ public void perform (Token t, Iterator iter) {\r
+ Assert.assert (t.type == Token.ALPHABETIC);\r
+ generator.push_format (Generator.ITALICS);\r
+ }};\r
+ final Action pop_italics_action = new Action () {\r
+ public void perform (Token t, Iterator iter) {\r
+ Assert.assert (t.type == Token.ALPHABETIC);\r
+ generator.pop_format ();\r
+ }};\r
+\r
+ register_by_type (new Action () {\r
+ boolean math_mode_on = false;\r
+ public void perform (Token t) {\r
+ if (math_mode_on) {\r
+ math_mode_on = false;\r
+ unregister_by_type (push_italics_action, Token.ALPHABETIC);\r
+ unregister_by_type (pop_italics_action, Token.ALPHABETIC);\r
+ }\r
+ else {\r
+ math_mode_on = true;\r
+ register_by_type_back (pop_italics_action, Token.ALPHABETIC);\r
+ register_by_type_front (push_italics_action, Token.ALPHABETIC);\r
+ }\r
+ }},\r
+ Token.DOLLAR);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ if (t.arg.equals (ROMAN_COMMANDNAME))\r
+ generator.push_format (Generator.ROMAN);\r
+ else if (t.arg.equals (BOLD_COMMANDNAME))\r
+ generator.push_format (Generator.BOLD);\r
+ else if (t.arg.equals (ITALICS_COMMANDNAME))\r
+ generator.push_format (Generator.ITALICS);\r
+ else if (t.arg.equals (SUBSCRIPT_COMMANDNAME))\r
+ generator.push_format (Generator.SUBSCRIPT);\r
+ else if (t.arg.equals (SUPERSCRIPT_COMMANDNAME))\r
+ generator.push_format (Generator.SUPERSCRIPT);\r
+ }},\r
+ Token.FORMATCOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.pop_format ();\r
+ }},\r
+ Token.POPFORMATCOMMAND);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ generator.plaintext (t.arg);\r
+ }},\r
+ Token.OTHER);\r
+\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ error_stream.println ("... done");\r
+ }},\r
+ Token.ENDOFSTREAM);\r
+\r
+ STANDARD = this;\r
+ }\r
+\r
+ /* no actions for these token types:\r
+ COMMENT\r
+ SEPARATORCOMMAND\r
+ */\r
+\r
+/*\r
+ not yet coded:\r
+\r
+ public static final int REFCOMMAND = 32;\r
+ public static final int TAGCOMMAND = 33;\r
+ public static final int CITECOMMAND = 34;\r
+*/\r
+\r
+\r
+ /* general form of action registration is this:\r
+ register_by_type (new Action () {\r
+ public void perform (Token t) {\r
+ // put code to be executed for token type here\r
+ }},\r
+ Token.TYPENAME);\r
+ */\r
+\r
+ void put_special_char (Generator generator, PropertyMap char_map,\r
+ String char_name, PrintStream error_stream, int line) {\r
+ String index = char_map.get_property (char_name, index_prop_name);\r
+ if (index == null) {\r
+ error_stream.println (line + ": Unresolved character: " + char_name);\r
+ }\r
+ else\r
+ generator.special_char (index);\r
+ }\r
+\r
+}
\ No newline at end of file
projects / IRC.git / blobdiff