Created filters namespace

filters/latex.py

@@ -0,0 +1,72 b''
+"""Latex transformer.
+
+Module that allows latex output notebooks to be conditioned before
+they are converted.
+"""
+#-----------------------------------------------------------------------------
+# Copyright (c) 2013, the IPython Development Team.
+#
+# Distributed under the terms of the Modified BSD License.
+#
+# The full license is in the file COPYING.txt, distributed with this software.
+#-----------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+from __future__ import print_function
+
+#-----------------------------------------------------------------------------
+# Functions
+#-----------------------------------------------------------------------------
+def rm_math_space(text):
+    """
+    Remove the space between latex math commands and enclosing $ symbols.
+    """
+
+    # First, scan through the markdown looking for $.  If
+    # a $ symbol is found, without a preceding \, assume
+    # it is the start of a math block.  UNLESS that $ is
+    # not followed by another within two math_lines.
+    math_regions = []
+    math_lines = 0
+    within_math = False
+    math_start_index = 0
+    ptext = ''
+    last_character = ""
+    skip = False
+    for index, char in enumerate(text):
+
+        #Make sure the character isn't preceeded by a backslash
+        if (char == "$" and last_character != "\\"):
+
+            # Close the math region if this is an ending $
+            if within_math:
+                within_math = False
+                skip = True
+                ptext = ptext+'$'+text[math_start_index+1:index].strip()+'$'
+                math_regions.append([math_start_index, index+1])
+            else:
+
+                # Start a new math region
+                within_math = True
+                math_start_index = index
+                math_lines = 0
+
+        # If we are in a math region, count the number of lines parsed.
+        # Cancel the math region if we find two line breaks!
+        elif char == "\n":
+            if within_math:
+                math_lines += 1
+                if math_lines > 1:
+                    within_math = False
+                    ptext = ptext+text[math_start_index:index]
+
+        # Remember the last character so we can easily watch
+        # for backslashes
+        last_character = char
+        if not within_math and not skip:
+            ptext = ptext+char
+        if skip:
+            skip = False
+    return ptext

api/exporter.py

@@ -344,7 +344,7 b' class Exporter(Configurable):'
             c.ExtractFigureTransformer.display_data_priority=['latex', 'svg', 'png', 'jpg', 'jpeg']
             c.ExtractFigureTransformer.extra_ext_map={'svg':'pdf'}
             c.ExtractFigureTransformer.enabled=True
-            
+
             # Enable latex transformers (make markdown2latex work with math $.)
             c.LatexTransformer.enabled=True
             c.SphinxTransformer.enabled = True
@@ -352,7 +352,7 b' class Exporter(Configurable):'
         elif export_format == 'markdown':
             c.NbconvertApp.fileext='md'
             c.ExtractFigureTransformer.enabled=True
-            
+
         elif export_format == 'python':
             c.NbconvertApp.fileext='py'
 

transformers/latex.py

@@ -40,58 +40,3 b' class LatexTransformer(ActivatableTransformer):'
         if hasattr(cell, "source") and cell.cell_type == "markdown":
             cell.source = rm_math_space(cell.source)
         return cell, other
-
-#-----------------------------------------------------------------------------
-# Functions
-#-----------------------------------------------------------------------------
-def rm_math_space(text):
-    """
-    Remove the space between latex math commands and enclosing $ symbols.
-    """
-
-    # First, scan through the markdown looking for $.  If
-    # a $ symbol is found, without a preceding \, assume
-    # it is the start of a math block.  UNLESS that $ is
-    # not followed by another within two math_lines.
-    math_regions = []
-    math_lines = 0
-    within_math = False
-    math_start_index = 0
-    ptext = ''
-    last_character = ""
-    skip = False
-    for index, char in enumerate(text):
-
-        #Make sure the character isn't preceeded by a backslash
-        if (char == "$" and last_character != "\\"):
-
-            # Close the math region if this is an ending $
-            if within_math:
-                within_math = False
-                skip = True
-                ptext = ptext+'$'+text[math_start_index+1:index].strip()+'$'
-                math_regions.append([math_start_index, index+1])
-            else:
-
-                # Start a new math region
-                within_math = True
-                math_start_index = index
-                math_lines = 0
-
-        # If we are in a math region, count the number of lines parsed.
-        # Cancel the math region if we find two line breaks!
-        elif char == "\n":
-            if within_math:
-                math_lines += 1
-                if math_lines > 1:
-                    within_math = False
-                    ptext = ptext+text[math_start_index:index]
-
-        # Remember the last character so we can easily watch
-        # for backslashes
-        last_character = char
-        if not within_math and not skip:
-            ptext = ptext+char
-        if skip:
-            skip = False
-    return ptext