Biber::Utils(3)

NAME
Biber::Utils - Various utility subs used in Biber

EXPORT
All functions are exported by default.

FUNCTIONS

  locate_biber_file
  Searches for a file by

  The exact path if the filename is absolute
  In the input_directory, if defined
  In the output_directory, if defined
  Relative to the current directory
  In the same directory as the control file
  Using kpsewhich, if available

  biber_warn
    Wrapper around various warnings bits and pieces
    Logs a warning, add warning to the list of .bbl warnings and optionally
    increments warning count in Biber object, if present

  biber_error
    Wrapper around error logging
    Forces an exit.

  makenamesid
Given a Biber::Names object, return an underscore normalised concatenation of all of the full name strings.

  makenameid
Given a Biber::Name object, return an underscore normalised concatenation of the full name strings.

  latex_recode_output
  Tries to convert UTF-8 to TeX macros in passed string

  strip_noinit
  Removes elements which are not to be considered during initials generation
  in names

  strip_nosort
  Removes elements which are not to be used in sorting a name from a string

  normalise_string_label
Remove some things from a string for label generation, like braces. It also decodes LaTeX character macros into Unicode as this is always safe when normalising strings for sorting since they don't appear in the output.

  normalise_string_sort
Removes LaTeX macros, and all punctuation, symbols, separators and control characters, as well as leading and trailing whitespace for sorting strings. It also decodes LaTeX character macros into Unicode as this is always safe when normalising strings for sorting since they don't appear in the output.

  normalise_string
Removes LaTeX macros, and all punctuation, symbols, separators and control characters, as well as leading and trailing whitespace for sorting strings. Only decodes LaTeX character macros into Unicode if output is UTF-8

  normalise_string_common
  Common bit for normalisation

  normalise_string_hash
  Normalise strings used for hashes. We collapse LaTeX macros into a vestige
  so that hashes are unique between things like:

  Smith
  {\v S}mith

  we replace macros like this to preserve their vestiges:

  \v S -> v:
  \" -> 34:

  normalise_string_underscore
  Like normalise_string, but also substitutes ~ and whitespace with underscore.

  escape_label
  Escapes a few special character which might be used in labels

  unescape_label
  Unscapes a few special character which might be used in label but which need
  sorting without escapes

  reduce_array
reduce_array(\@a, \@b) returns all elements in @a that are not in @b

  remove_outer
    Remove surrounding curly brackets:
        '{string}' -> 'string'

  add_outer
    Add surrounding curly brackets:
        'string' -> '{string}'

  ucinit
    upper case of initial letters in a string

  is_undef
    Checks for undefness of arbitrary things, including
    composite method chain calls which don't reliably work
    with defined() (see perldoc for defined())
    This works because we are just testing the value passed
    to this sub. So, for example, this is randomly unreliable
    even if the resulting value of the arg to defined() is "undef":

    defined($thing->method($arg)->method)

    wheras:

    is_undef($thing->method($arg)->method)

    works since we only test the return value of all the methods
    with defined()

  is_def
    Checks for definedness in the same way as is_undef()

  is_undef_or_null
    Checks for undef or nullness (see is_undef() above)

  is_def_and_notnull
    Checks for def and unnullness (see is_undef() above)

  is_def_and_null
    Checks for def and nullness (see is_undef() above)

  is_null
    Checks for nullness

  is_notnull
    Checks for notnullness

  is_notnull_scalar
    Checks for notnullness of a scalar

  is_notnull_array
    Checks for notnullness of an array (passed by ref)

  is_notnull_hash
    Checks for notnullness of an hash (passed by ref)

  is_notnull_object
    Checks for notnullness of an object (passed by ref)

  stringify_hash
    Turns a hash into a string of keys and values

  normalise_utf8
  Normalise any UTF-8 encoding string immediately to exactly what we want
  We want the strict perl utf8 "UTF-8"

  inits
   We turn the initials into an array so we can be flexible with them later
   The tie here is used only so we know what to split on. We don't want to make
   any typesetting decisions in Biber, like what to use to join initials so on
   output to the .bbl, we only use BibLaTeX macros.

  join_name
  Replace all join typsetting elements in a name part (space, ties) with BibLaTeX macros
  so that typesetting decisions are made in BibLaTeX, not hard-coded in Biber

  filter_entry_options
    Process any per_entry option transformations which are necessary

  imatch
    Do an interpolating (neg)match using a match RE and a string passed in as variables

  ireplace
    Do an interpolating match/replace using a match RE, replacement RE
    and string passed in as variables

  validate_biber_xml
  Validate a biber/biblatex XML metadata file against an RNG schema

  process_entry_options
    Set per-entry options

  parse_date
  Simple parse of ISO8601 dates because not decent module exists for this that
  doesn't default the missing components

  biber_decode_utf8
    Perform NFD form conversion as well as UTF-8 conversion. Used to normalize
    bibtex input as the T::B interface doesn't allow a neat whole file slurping.

  out
  Output to target. Outputs NFC UTF-8 if output is UTF-8

  locale2bcp47
  Map babel/polyglossia language options to a sensible CLDR (bcp47) locale default
  Return input string if there is no mapping

  bcp472locale
  Map CLDR (bcp47) locale to a babel/polyglossia locale
  Return input string if there is no mapping

AUTHOR
Francois Charette, "<firmicus at ankabut.net>" Philip Kime "<philip at kime.org.uk>"

BUGS
Please report any bugs or feature requests on our Github tracker at <https://github.com/plk/biber/issues>.

COPYRIGHT & LICENSE
Copyright 2009-2014 Francois Charette and Philip Kime, all rights reserved.

This module is free software. You can redistribute it and/or modify it under the terms of the Artistic License 2.0.

This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.