Introduce a proper form of the put_cmd_in_ert function.

Even if this doesn't get used in 2.0, we'll at least have it for later.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33915 a592a061-630c-0410-9148-cb99ea01b6c8

lib/lyx2lyx/lyx_2_0.py

@@ -90,6 +90,8 @@ def read_unicodesymbols():
 unicode_reps = read_unicodesymbols()
 
 
+# DO NOT USE THIS ROUTINE ANY MORE. Better yet, replace the uses that
+# have been made of it with uses of put_cmd_in_ert.
 def old_put_cmd_in_ert(string):
     for rep in unicode_reps:
         string = string.replace(rep[1], rep[0].replace('\\\\', '\\'))
@@ -99,6 +101,40 @@ def old_put_cmd_in_ert(string):
     return string
 
 
+# This routine wraps some content in an ERT inset. It returns a 
+# LIST of strings. This is how lyx2lyx works: with a list of strings, 
+# each representing a line of a LyX file. Embedded newlines confuse
+# lyx2lyx very much.
+# For this same reason, we expect as input a LIST of strings, not
+# something with embedded newlines. That said, if any of your strings
+# do have embedded newlines, the string will eventually get split on
+# them and you'll get a list back.
+#
+# A call to this routine will often go something like this:
+#   i = find_token('\\begin_inset FunkyInset', ...)
+#   ...
+#   j = find_end_of_inset(document.body, i)
+#   content = ...extract content from insets
+#   ert = put_cmd_in_ert(content)
+#   document.body[i:j] = ert
+# Now, before we continue, we need to reset i appropriately. Normally,
+# this would be: 
+#   i += len(ert)
+# That puts us right after the ERT we just inserted.
+def put_cmd_in_ert(strlist):
+    ret = ["\\begin_inset ERT", "status collapsed", "\\begin_layout Plain Layout\n"]
+    # Despite the warnings just given, it will be faster for us to work
+    # with a single string internally. That way, we only go through the
+    # unicode_reps loop once.
+    s = "\n".join(strlist)
+    for rep in unicode_reps:
+        s = s.replace(rep[1], rep[0].replace('\\\\', '\\'))
+    s = s.replace('\\', "\\backslash\n")
+    ret += s.splitlines()
+    ret += ["\\end_layout", "\\end_inset"]
+    return ret
+
+            
 def lyx2latex(document, lines):
     'Convert some LyX stuff into corresponding LaTeX stuff, as best we can.'
     # clean up multiline stuff