]> git.lyx.org Git - lyx.git/blobdiff - lib/lyx2lyx/LyX.py
fileformat change for my previous commit: Albanian and lower Sorbian support
[lyx.git] / lib / lyx2lyx / LyX.py
index 7d8016c082e7e80cc1a411805a8ff87ee7b8ece0..55754c0a56ffefc4829bb627f8f9ed939f8c3cf8 100644 (file)
@@ -1,6 +1,7 @@
 # This file is part of lyx2lyx
-# -*- coding: iso-8859-1 -*-
-# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>, José Matos <jamatos@lyx.org>
+# -*- coding: utf-8 -*-
+# Copyright (C) 2002-2004 Dekel Tsur <dekel@lyx.org>
+# Copyright (C) 2002-2006 José Matos <jamatos@lyx.org>
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
-from parser_tools import get_value, check_token, find_token,\
-     find_tokens, find_end_of, find_end_of_inset
+" The LyX module has all the rules related with different lyx file formats."
+
+from parser_tools import get_value, check_token, find_token, \
+     find_tokens, find_end_of
 import os.path
 import gzip
+import locale
 import sys
 import re
-import string
 import time
 
-version_lyx2lyx = "1.4.0cvs"
-default_debug_level = 2
+try:
+    import lyx2lyx_version
+    version__ = lyx2lyx_version.version
+except: # we are running from build directory so assume the last version
+    version__ = '1.6.0svn'
+
+default_debug__ = 2
+
+####################################################################
+# Private helper functions
+
+def find_end_of_inset(lines, i):
+    " Find beginning of inset, where lines[i] is included."
+    return find_end_of(lines, i, "\\begin_inset", "\\end_inset")
+
+def minor_versions(major, last_minor_version):
+    """ Generate minor versions, using major as prefix and minor
+    versions from 0 until last_minor_version, plus the generic version.
+
+    Example:
+
+      minor_versions("1.2", 4) ->
+      [ "1.2", "1.2.0", "1.2.1", "1.2.2", "1.2.3"]
+    """
+    return [major] + [major + ".%d" % i for i in range(last_minor_version + 1)]
+
+
+# End of helper functions
+####################################################################
+
 
 # Regular expressions used
 format_re = re.compile(r"(\d)[\.,]?(\d\d)")
 fileformat = re.compile(r"\\lyxformat\s*(\S*)")
-original_version = re.compile(r"\#LyX (\S*)")
+original_version = re.compile(r".*?LyX ([\d.]*)")
 
 ##
 # file format information:
 #  file, supported formats, stable release versions
-format_relation = [("0_10",  [210], ["0.10.7","0.10"]),
-                   ("0_12",  [215], ["0.12","0.12.1","0.12"]),
-                   ("1_0_0", [215], ["1.0.0","1.0"]),
-                   ("1_0_1", [215], ["1.0.1","1.0.2","1.0.3","1.0.4", "1.1.2","1.1"]),
-                   ("1_1_4", [215], ["1.1.4","1.1"]),
-                   ("1_1_5", [216], ["1.1.5","1.1.5fix1","1.1.5fix2","1.1"]),
-                   ("1_1_6", [217], ["1.1.6","1.1.6fix1","1.1.6fix2","1.1"]),
-                   ("1_1_6fix3", [218], ["1.1.6fix3","1.1.6fix4","1.1"]),
-                   ("1_2", [220], ["1.2.0","1.2.1","1.2.3","1.2.4","1.2"]),
-                   ("1_3", [221], ["1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.3.5","1.3"]),
-                   ("1_4", range(223,244), ["1.4.0cvs","1.4"])]
+format_relation = [("0_06",    [200], minor_versions("0.6" , 4)),
+                   ("0_08",    [210], minor_versions("0.8" , 6) + ["0.7"]),
+                   ("0_10",    [210], minor_versions("0.10", 7) + ["0.9"]),
+                   ("0_12",    [215], minor_versions("0.12", 1) + ["0.11"]),
+                   ("1_0",     [215], minor_versions("1.0" , 4)),
+                   ("1_1",     [215], minor_versions("1.1" , 4)),
+                   ("1_1_5",   [216], ["1.1.5","1.1.5.1","1.1.5.2","1.1"]),
+                   ("1_1_6_0", [217], ["1.1.6","1.1.6.1","1.1.6.2","1.1"]),
+                   ("1_1_6_3", [218], ["1.1.6.3","1.1.6.4","1.1"]),
+                   ("1_2",     [220], minor_versions("1.2" , 4)),
+                   ("1_3",     [221], minor_versions("1.3" , 7)),
+                   ("1_4", range(222,246), minor_versions("1.4" , 5)),
+                   ("1_5", range(246,277), minor_versions("1.5" , 2)),
+                   ("1_6", range(277,298), minor_versions("1.6" , 0))] # Uwe: Albanian, lower Sorbian
 
 
 def formats_list():
@@ -73,12 +107,46 @@ def get_backend(textclass):
     return "latex"
 
 
+def trim_eol(line):
+    " Remove end of line char(s)."
+    if line[-2:-1] == '\r':
+        return line[:-2]
+    else:
+        return line[:-1]
+
+
+def get_encoding(language, inputencoding, format, cjk_encoding):
+    " Returns enconding of the lyx file"
+    if format > 248:
+        return "utf8"
+    # CJK-LyX encodes files using the current locale encoding.
+    # This means that files created by CJK-LyX can only be converted using
+    # the correct locale settings unless the encoding is given as commandline
+    # argument.
+    if cjk_encoding == 'auto':
+        return locale.getpreferredencoding()
+    elif cjk_encoding:
+        return cjk_encoding
+    from lyx2lyx_lang import lang
+    if inputencoding == "auto" or inputencoding == "default":
+        return lang[language][3]
+    if inputencoding == "":
+        return "latin1"
+    # python does not know the alias latin9
+    if inputencoding == "latin9":
+        return "iso-8859-15"
+    return inputencoding
+
 ##
 # Class
 #
-class LyX_Base:
+class LyX_base:
     """This class carries all the information of the LyX file."""
-    def __init__(self, end_format = 0, input = "", output = "", error = "", debug = default_debug_level, try_hard = 0):
+    
+    def __init__(self, end_format = 0, input = "", output = "", error = "",
+                 debug = default_debug__, try_hard = 0, cjk_encoding = '',
+                 language = "english", encoding = "auto"):
+
         """Arguments:
         end_format: final format that the file should be converted. (integer)
         input: the name of the input source, if empty resort to standard input.
@@ -86,14 +154,7 @@ class LyX_Base:
         error: the name of the error file, if empty use the standard error.
         debug: debug level, O means no debug, as its value increases be more verbose.
         """
-        if input and input != '-':
-            self.input = self.open(input)
-        else:
-            self.input = sys.stdin
-        if output:
-            self.output = open(output, "w")
-        else:
-            self.output = sys.stdout
+        self.choose_io(input, output)
 
         if error:
             self.err = open(error, "w")
@@ -102,6 +163,7 @@ class LyX_Base:
 
         self.debug = debug
         self.try_hard = try_hard
+        self.cjk_encoding = cjk_encoding
 
         if end_format:
             self.end_format = self.lyxformat(end_format)
@@ -110,13 +172,21 @@ class LyX_Base:
 
         self.backend = "latex"
         self.textclass = "article"
+        # This is a hack: We use '' since we don't know the default
+        # layout of the text class. LyX will parse it as default layout.
+        # FIXME: Read the layout file and use the real default layout
+        self.default_layout = ''
         self.header = []
+        self.preamble = []
         self.body = []
         self.status = 0
+        self.encoding = encoding
+        self.language = language
 
 
-    def warning(self, message, debug_level= default_debug_level):
-        " Emits warning to self.error, if the debug_level is less than the self.debug."
+    def warning(self, message, debug_level= default_debug__):
+        """ Emits warning to self.error, if the debug_level is less
+        than the self.debug."""
         if debug_level <= self.debug:
             self.err.write("Warning: " + message + "\n")
 
@@ -132,78 +202,117 @@ class LyX_Base:
 
 
     def read(self):
-        """Reads a file into the self.header and self.body parts, from self.input."""
-        preamble = 0
+        """Reads a file into the self.header and
+        self.body parts, from self.input."""
 
-        while 1:
+        while True:
             line = self.input.readline()
             if not line:
                 self.error("Invalid LyX file.")
 
-            line = line[:-1]
-            # remove '\r' from line's end, if present
-            if line[-1:] == '\r':
-                line = line[:-1]
-
+            line = trim_eol(line)
             if check_token(line, '\\begin_preamble'):
-                preamble = 1
-            if check_token(line, '\\end_preamble'):
-                preamble = 0
+                while 1:
+                    line = self.input.readline()
+                    if not line:
+                        self.error("Invalid LyX file.")
+
+                    line = trim_eol(line)
+                    if check_token(line, '\\end_preamble'):
+                        break
+                    
+                    if line.split()[:0] in ("\\layout",
+                                            "\\begin_layout", "\\begin_body"):
+                        
+                        self.warning("Malformed LyX file:"
+                                     "Missing '\\end_preamble'."
+                                     "\nAdding it now and hoping"
+                                     "for the best.")
+
+                    self.preamble.append(line)
 
-            if not preamble:
-                line = string.strip(line)
+            if check_token(line, '\\end_preamble'):
+                continue
 
-            if not preamble:
-                if not line:
-                    continue
+            line = line.strip()
+            if not line:
+                continue
 
-                if string.split(line)[0] in ("\\layout", "\\begin_layout", "\\begin_body"):
-                    self.body.append(line)
-                    break
+            if line.split()[0] in ("\\layout", "\\begin_layout",
+                                   "\\begin_body", "\\begin_deeper"):
+                self.body.append(line)
+                break
 
             self.header.append(line)
 
-        while 1:
-            line = self.input.readline()
-            if not line:
-                break
-            # remove '\r' from line's end, if present
-            if line[-2:-1] == '\r':
-                self.body.append(line[:-2])
-            else:
-                self.body.append(line[:-1])
-
         self.textclass = get_value(self.header, "\\textclass", 0)
         self.backend = get_backend(self.textclass)
         self.format  = self.read_format()
-        self.language = get_value(self.header, "\\language", 0)
-        if self.language == "":
-            self.language = "english"
+        self.language = get_value(self.header, "\\language", 0,
+                                  default = "english")
+        self.inputencoding = get_value(self.header, "\\inputencoding",
+                                       0, default = "auto")
+        self.encoding = get_encoding(self.language,
+                                     self.inputencoding, self.format,
+                                     self.cjk_encoding)
         self.initial_version = self.read_version()
 
+        # Second pass over header and preamble, now we know the file encoding
+        for i in range(len(self.header)):
+            self.header[i] = self.header[i].decode(self.encoding)
+        for i in range(len(self.preamble)):
+            self.preamble[i] = self.preamble[i].decode(self.encoding)
+
+        # Read document body
+        while 1:
+            line = self.input.readline().decode(self.encoding)
+            if not line:
+                break
+            self.body.append(trim_eol(line))
+
 
     def write(self):
         " Writes the LyX file to self.output."
         self.set_version()
         self.set_format()
+        self.set_textclass()
+        if self.encoding == "auto":
+            self.encoding = get_encoding(self.language, self.encoding,
+                                         self.format, self.cjk_encoding)
+        if self.preamble:
+            i = find_token(self.header, '\\textclass', 0) + 1
+            preamble = ['\\begin_preamble'] + self.preamble + ['\\end_preamble']
+            if i == 0:
+                self.error("Malformed LyX file: Missing '\\textclass'.")
+            else:
+                header = self.header[:i] + preamble + self.header[i:]
+        else:
+            header = self.header
 
-        for line in self.header:
-            self.output.write(line+"\n")
-        self.output.write("\n")
-        for line in self.body:
-            self.output.write(line+"\n")
+        for line in header + [''] + self.body:
+            self.output.write(line.encode(self.encoding)+"\n")
 
 
-    def open(self, file):
-        """Transparently deals with compressed files."""
+    def choose_io(self, input, output):
+        """Choose input and output streams, dealing transparently with
+        compressed files."""
 
-        self.dir = os.path.dirname(os.path.abspath(file))
-        try:
-            gzip.open(file).readline()
-            self.output = gzip.GzipFile("","wb",6,self.output)
-            return gzip.open(file)
-        except:
-            return open(file)
+        if output:
+            self.output = open(output, "wb")
+        else:
+            self.output = sys.stdout
+
+        if input and input != '-':
+            self.dir = os.path.dirname(os.path.abspath(input))
+            try:
+                gzip.open(input).readline()
+                self.input = gzip.open(input)
+                self.output = gzip.GzipFile(mode="wb", fileobj=self.output) 
+            except:
+                self.input = open(input)
+        else:
+            self.dir = ''
+            self.input = sys.stdin
 
 
     def lyxformat(self, format):
@@ -211,6 +320,8 @@ class LyX_Base:
         result = format_re.match(format)
         if result:
             format = int(result.group(1) + result.group(2))
+        elif format == '2':
+            format = 200
         else:
             self.error(str(format) + ": " + "Invalid LyX file.")
 
@@ -222,21 +333,33 @@ class LyX_Base:
 
 
     def read_version(self):
-        """ Searchs for clues of the LyX version used to write the file, returns the
-        most likely value, or None otherwise."""
+        """ Searchs for clues of the LyX version used to write the
+        file, returns the most likely value, or None otherwise."""
+
         for line in self.header:
             if line[0] != "#":
                 return None
 
+            line = line.replace("fix",".")
             result = original_version.match(line)
             if result:
-                return result.group(1)
+                # Special know cases: reLyX and KLyX
+                if line.find("reLyX") != -1 or line.find("KLyX") != -1:
+                    return "0.12"
+
+                res = result.group(1)
+                if not res:
+                    self.warning(line)
+                #self.warning("Version %s" % result.group(1))
+                return res
+        self.warning(str(self.header[:2]))
         return None
 
 
     def set_version(self):
         " Set the header with the version used."
-        self.header[0] = "#LyX %s created this file. For more info see http://www.lyx.org/" % version_lyx2lyx
+        self.header[0] = " ".join(["#LyX %s created this file." % version__,
+                                  "For more info see http://www.lyx.org/"])
         if self.header[1][0] == '#':
             del self.header[1]
 
@@ -262,15 +385,28 @@ class LyX_Base:
         self.header[i] = "\\lyxformat %s" % format
 
 
+    def set_textclass(self):
+        i = find_token(self.header, "\\textclass", 0)
+        self.header[i] = "\\textclass %s" % self.textclass
+
+
     def set_parameter(self, param, value):
         " Set the value of the header parameter."
         i = find_token(self.header, '\\' + param, 0)
         if i == -1:
-            self.warning(3, 'Parameter not found in the header: %s' % param)
+            self.warning('Parameter not found in the header: %s' % param, 3)
             return
         self.header[i] = '\\%s %s' % (param, str(value))
 
 
+    def is_default_layout(self, layout):
+        " Check whether a layout is the default layout of this class."
+        # FIXME: Check against the real text class default layout
+        if layout == 'Standard' or layout == self.default_layout:
+            return 1
+        return 0
+
+
     def convert(self):
         "Convert from current (self.format) to self.end_format."
         mode, convertion_chain = self.chain()
@@ -279,9 +415,11 @@ class LyX_Base:
         for step in convertion_chain:
             steps = getattr(__import__("lyx_" + step), mode)
 
-            self.warning("Convertion step: %s - %s" % (step, mode), default_debug_level + 1)
+            self.warning("Convertion step: %s - %s" % (step, mode),
+                         default_debug__ + 1)
             if not steps:
-                    self.error("The convertion to an older format (%s) is not implemented." % self.format)
+                self.error("The convertion to an older "
+                "format (%s) is not implemented." % self.format)
 
             multi_conv = len(steps) != 1
             for version, table in steps:
@@ -295,24 +433,26 @@ class LyX_Base:
                     try:
                         conv(self)
                     except:
-                        self.warning("An error ocurred in %s, %s" % (version, str(conv)),
-                                     default_debug_level)
+                        self.warning("An error ocurred in %s, %s" %
+                                     (version, str(conv)),
+                                     default_debug__)
                         if not self.try_hard:
                             raise
                         self.status = 2
                     else:
-                        self.warning("%lf: Elapsed time on %s"  % (time.time() - init_t, str(conv)),
-                                     default_debug_level + 1)
-
+                        self.warning("%lf: Elapsed time on %s" %
+                                     (time.time() - init_t,
+                                      str(conv)), default_debug__ +
+                                     1)
                 self.format = version
                 if self.end_format == self.format:
                     return
 
 
     def chain(self):
-        """ This is where all the decisions related with the convertion are taken.
-        It returns a list of modules needed to convert the LyX file from
-        self.format to self.end_format"""
+        """ This is where all the decisions related with the
+        convertion are taken.  It returns a list of modules needed to
+        convert the LyX file from self.format to self.end_format"""
 
         self.start =  self.format
         format = self.format
@@ -327,7 +467,9 @@ class LyX_Base:
 
         if not correct_version:
             if format <= 215:
-                self.warning("Version does not match file format, discarding it.")
+                self.warning("Version does not match file format, "
+                             "discarding it. (Version %s, format %d)" %
+                             (self.initial_version, self.format))
             for rel in format_relation:
                 if format in rel[1]:
                     initial_step = rel[0]
@@ -357,7 +499,7 @@ class LyX_Base:
                     steps.append(step[0])
         else:
             mode = "revert"
-            relation_format = format_relation
+            relation_format = format_relation[:]
             relation_format.reverse()
             last_step = None
 
@@ -369,15 +511,18 @@ class LyX_Base:
             if last_step[1][-1] == self.end_format:
                 steps.pop()
 
+        self.warning("Convertion mode: %s\tsteps%s" %(mode, steps), 10)
         return mode, steps
 
 
     def get_toc(self, depth = 4):
         " Returns the TOC of this LyX document."
-        paragraphs_filter = {'Title' : 0,'Chapter' : 1, 'Section' : 2, 'Subsection' : 3, 'Subsubsection': 4}
+        paragraphs_filter = {'Title' : 0,'Chapter' : 1, 'Section' : 2,
+                             'Subsection' : 3, 'Subsubsection': 4}
         allowed_insets = ['Quotes']
-        allowed_parameters = '\\paragraph_spacing', '\\noindent', '\\align', '\\labelwidthstring', "\\start_of_appendix"
-
+        allowed_parameters = ('\\paragraph_spacing', '\\noindent',
+                              '\\align', '\\labelwidthstring',
+                              "\\start_of_appendix", "\\leftindent")
         sections = []
         for section in paragraphs_filter.keys():
             sections.append('\\begin_layout %s' % section)
@@ -394,7 +539,7 @@ class LyX_Base:
                 self.warning('Incomplete file.', 0)
                 break
 
-            section = string.split(self.body[i])[1]
+            section = self.body[i].split()[1]
             if section[-1] == '*':
                 section = section[:-1]
 
@@ -402,12 +547,13 @@ class LyX_Base:
 
             k = i + 1
             # skip paragraph parameters
-            while not string.strip(self.body[k]) and string.split(self.body[k])[0] in allowed_parameters:
-                k = k +1
+            while not self.body[k].strip() or self.body[k].split()[0] \
+                      in allowed_parameters:
+                k += 1 
 
             while k < j:
                 if check_token(self.body[k], '\\begin_inset'):
-                    inset = string.split(self.body[k])[1]
+                    inset = self.body[k].split()[1]
                     end = find_end_of_inset(self.body, k)
                     if end == -1 or end > j:
                         self.warning('Malformed file.', 0)
@@ -417,10 +563,10 @@ class LyX_Base:
                     k = end + 1
                 else:
                     par.append(self.body[k])
-                    k = k + 1
+                    k += 1
 
             # trim empty lines in the end.
-            while string.strip(par[-1]) == '' and par:
+            while par and par[-1].strip() == '':
                 par.pop()
 
             toc_par.append(Paragraph(section, par))
@@ -430,30 +576,40 @@ class LyX_Base:
         return toc_par
 
 
-class File(LyX_Base):
+class File(LyX_base):
     " This class reads existing LyX files."
-    def __init__(self, end_format = 0, input = "", output = "", error = "", debug = default_debug_level, try_hard = 0):
-        LyX_Base.__init__(self, end_format, input, output, error, debug, try_hard)
+
+    def __init__(self, end_format = 0, input = "", output = "", error = "",
+                 debug = default_debug__, try_hard = 0, cjk_encoding = ''):
+        LyX_base.__init__(self, end_format, input, output, error,
+                          debug, try_hard, cjk_encoding)
         self.read()
 
 
-class NewFile(LyX_Base):
+class NewFile(LyX_base):
     " This class is to create new LyX files."
     def set_header(self, **params):
         # set default values
         self.header.extend([
-            "#LyX xxxx created this file. For more info see http://www.lyx.org/",
+            "#LyX xxxx created this file."
+            "For more info see http://www.lyx.org/",
             "\\lyxformat xxx",
             "\\begin_document",
             "\\begin_header",
             "\\textclass article",
             "\\language english",
             "\\inputencoding auto",
-            "\\fontscheme default",
+            "\\font_roman default",
+            "\\font_sans default",
+            "\\font_typewriter default",
+            "\\font_default_family default",
+            "\\font_sc false",
+            "\\font_osf false",
+            "\\font_sf_scale 100",
+            "\\font_tt_scale 100",
             "\\graphics default",
             "\\paperfontsize default",
             "\\papersize default",
-            "\\paperpackage none",
             "\\use_geometry false",
             "\\use_amsmath 1",
             "\\cite_engine basic",
@@ -464,7 +620,6 @@ class NewFile(LyX_Base):
             "\\paragraph_separation indent",
             "\\defskip medskip",
             "\\quotes_language english",
-            "\\quotes_times 2",
             "\\papercolumns 1",
             "\\papersides 1",
             "\\paperpagestyle default",
@@ -486,7 +641,8 @@ class NewFile(LyX_Base):
 
 
 class Paragraph:
-    # unfinished implementation, it is missing the Text and Insets representation.
+    # unfinished implementation, it is missing the Text and Insets
+    # representation.
     " This class represents the LyX paragraphs."
     def __init__(self, name, body=[], settings = [], child = []):
         """ Parameters:
@@ -500,7 +656,9 @@ class Paragraph:
         self.child = child
 
     def asLines(self):
-        " Converts the paragraph to a list of strings, representing it in the LyX file."
+        """ Converts the paragraph to a list of strings, representing
+        it in the LyX file."""
+
         result = ['','\\begin_layout %s' % self.name]
         result.extend(self.settings)
         result.append('')
@@ -516,13 +674,3 @@ class Paragraph:
         result.append('\\end_deeper')
 
         return result
-
-
-class Inset:
-    " This class represents the LyX insets."
-    pass
-
-
-class Text:
-    " This class represents simple chuncks of text."
-    pass