Re: Source_file: remove mbrtowc() in favor of utf8_char_len()

[pnorcks]

Reviewers: Neil Puttock,

Message:
On 2009/11/12 20:38:57, Neil Puttock wrote:
> Hi Patrick,

> This looks fine to me.

Thanks, Neil.  I pushed the patches.

-Patrick

Description:
Source_file: remove mbrtowc() in favor of utf8_char_len()

- Move the routine to determine length of UTF-8 characters into a
separate function.

- Use this new function in Source_file::get_counts() instead of
the problematic mbrtowc() function.

- In get_counts(), revert the line_char variable to its original
behavior: keeping track of the character count, not the byte
offset.

- Introduce a new parameter to get_counts() to keep track of the
byte offset.

- Use the byte offset data in Source_file::quote_input() to make
sure the source line is split at the correct place.

- Remove outdated configure checks, since mbrtowc() is no longer
used.

Please review this at http://codereview.appspot.com/154046

Affected files:
  M config.hh.in
  M configure.in
  M lily/include/input.hh
  M lily/include/misc.hh
  M lily/include/source-file.hh
  M lily/input-scheme.cc
  M lily/input.cc
  M lily/misc.cc
  M lily/source-file.cc
  M lily/text-interface.cc