Provided by: libbtparse-dev_0.71-1build1_amd64 
NAME
bt_format_names - formatting BibTeX names for consistent output
SYNOPSIS
bt_name_format * bt_create_name_format (char * parts,
boolean abbrev_first);
void bt_free_name_format (bt_name_format * format);
void bt_set_format_text (bt_name_format * format,
bt_namepart part,
char * pre_part,
char * post_part,
char * pre_token,
char * post_token);
void bt_set_format_options (bt_name_format * format,
bt_namepart part,
boolean abbrev,
bt_joinmethod join_tokens,
bt_joinmethod join_part);
char * bt_format_name (bt_name * name, bt_name_format * format);
DESCRIPTION
After splitting a name into its components parts (represented as a "bt_name" structure),
you often want to put it back together again as a single string in a consistent way.
btparse provides a very flexible way to do this, generally in two stages: first, you
create a "name format" which describes how to put the tokens and parts of any name back
together, and then you apply the format to a particular name.
The "name format" is encapsulated in a "bt_name_format" structure, which is created with
"bt_create_name_format()". This function includes some clever trickery that means you can
usually get away with calling it alone, and not need to do any customization of the
format. If you do need to customize the format, though, "bt_set_format_text()" and
"bt_set_format_options()" provide that capability.
The format controls the following:
• which name parts are printed, and in what order (e.g. "first von last jr", or "von
last jr first")
• the text that precedes and follows each part (e.g. if the first name follows the last
name, you probably want a comma before the `first' part: "Smith, John" rather than
"Smith John")
• the text that precedes and follows each token (e.g. if the first name is abbreviated,
you may want a period after each token: "J. R. Smith" rather than "J R Smith")
• the method used to join the tokens of each part together
• the method used to join each part to the following part
All of these except the list of parts to format are kept in arrays indexed by name part:
for example, the structure has a field
char * post_token[BT_MAX_NAMEPARTS]
and "post_token[BTN_FIRST]" ("BTN_FIRST" is from the "bt_namepart" "enum") is the string
to be added after each token in the first name---for example, "." if the first name is to
be abbreviated in the conventional way.
Yet another "enum", "bt_joinmethod", describes the available methods for joining tokens
together. Note that there are two sets of join methods in a name format: between tokens
within a single part, and between the tokens of two different parts. The first allows
you, for example, to change "J R Smith" (first name abbreviated with no post-token text
but tokens joined by a space) to "JR Smith" (the same, but first-name tokens jammed
together). The second is mainly used to ensure that "von" and "last" name-parts may be
joined with a tie: "de~Roche" rather than "de Roche".
The token join methods are:
BTJ_MAYTIE
Insert a "discretionary tie" between tokens. That is, either a space or a "tie" is
inserted, depending on context. (A "tie," otherwise known as unbreakable space, is
currently hard-coded as "~"---from TeX.)
The format is then applied to a particular name by "bt_format_name()", which returns a
new string.
BTJ_SPACE
Always insert a space between tokens.
BTJ_FORCETIE
Always insert a "tie" ("~") between tokens.
BTJ_NOTHING
Insert nothing between tokens---just jam them together.
Tokens are joined together, and thus the choice of whether to insert a "discretionary tie"
is made, at two places: within a part and between two parts. Naturally, this only applies
when "BTJ_MAYTIE" was supplied as the token-join method; "BTJ_SPACE" and "BTJ_FORCETIE"
always insert either a space or tie, and "BTJ_NOTHING" always adds nothing between tokens.
Within a part, ties are added after a the first token if it is less than three characters
long, and before the last token. Between parts, a tie is added only if the preceding part
consisted of single token that was less than three characters long. In all other cases,
spaces are inserted. (This implementation slavishly follows BibTeX.)
FUNCTIONS
bt_create_name_format()
bt_name_format * bt_create_name_format (char * parts,
boolean abbrev_first)
Creates a name format for a given set of parts, with variations for the most common
forms of customization---the order of parts and whether to abbreviate the first name.
The "parts" parameter specifies which parts to include in a formatted name, as well as
the order in which to format them. "parts" must be a string of four or fewer
characters, each of which denotes one of the four name parts: for instance, "vljf"
means to format all four parts in "von last jr first" order. No characters outside of
the set "fvlj" are allowed, and no characters may be repeated. "abbrev_first"
controls whether the `first' part will be abbreviated (i.e., only the first letter
from each token will be printed).
In addition to simply setting the list of parts to format and the "abbreviate" flag
for the first name, "bt_create_name_format()" initializes the entire format structure
so as to minimize the need for further customizations:
• The "token join method"---what to insert between tokens of the same part---is set
to "BTJ_MAYTIE" (discretionary tie) for all parts
• The "part join method"---what to insert after the final token of a particular
part, assuming there are more parts to come---is set to "BTJ_SPACE" for the
`first', `last', and `jr' parts. If the `von' part is present and immediately
precedes the `last' part (which will almost always be the case), "BTJ_MAYTIE" is
used to join `von' to `last'; otherwise, `von' also gets "BTJ_SPACE" for the
inter-part join method.
• The abbreviation flag is set to "FALSE" for the `von', `last', and `jr' parts; for
`first', the abbreviation flag is set to whatever you pass in as "abbrev_first".
• Initially, all "surrounding text" (pre-part, post-part, pre-token, and post-token)
for all parts is set to the empty string. Then a few tweaks are done, depending
on the "abbrev_first" flag and the order of tokens. First, if "abbrev_first" is
"TRUE", the post-token text for first name is set to "."---this changes "J R
Smith" to "J. R. Smith", which is usually the desired form. (If you don't want
the periods, you'll have to set the post-token text yourself with
"bt_set_format_text()".)
Then, if `jr' is present and immediately after `last' (almost always the case),
the pre-part text for `jr' is set to ", ", and the inter-part join method for
`last' is set to "BTJ_NOTHING". This changes "John Smith Jr" (where the space
following "Smith" comes from formatting the last name with a "BTJ_SPACE" inter-
part join method) to "John Smith, Jr" (where the ", " is now associated with
"Jr"---that way, if there is no `jr' part, the ", " will not be printed.)
Finally, if `first' is present and immediately follows either `jr' or `last'
(which will usually be the case in "last-name first" formats), the same sort of
trickery is applied: the pre-part text for `first' is set to ", ", and the part
join method for the preceding part (either `jr' or `last') is set to
"BTJ_NOTHING".
While all these rules are rather complicated, they mean that you are usually freed
from having to do any customization of the name format. Certainly this is the case if
you only need "fvlj" and "vljf" part orders, only want to abbreviate the first name,
want periods after abbreviated tokens, non-breaking spaces in the "right" places, and
commas in the conventional places.
If you want something out of the ordinary---for instance, abbreviated tokens jammed
together with no puncuation, or abbreviated last names---you'll need to customize the
name format a bit with "bt_set_format_text()" and "bt_set_format_options()".
bt_free_name_format()
void bt_free_name_format (bt_name_format * format)
Frees a name format created by "bt_create_name_format()".
bt_set_format_text()
void bt_set_format_text (bt_name_format * format,
bt_namepart part,
char * pre_part,
char * post_part,
char * pre_token,
char * post_token)
Allows you to customize some or all of the surrounding text for a single name part.
Supply "NULL" for any chunk of text that you don't want to change.
For instance, say you want a name format that will abbreviate first names, but without
any punctuation after the abbreviated tokens. You could create and customize the
format as follows:
format = bt_create_name_format ("fvlj", TRUE);
bt_set_format_text (format,
BTN_FIRST, /* name-part to customize */
NULL, NULL, /* pre- and post- part text */
NULL, ""); /* empty string for post-token */
Without the "bt_set_format_text()" call, "format" would result in names formatted like
"J. R. Smith". After setting the post-token text for first names to "", this name
would become "J R Smith".
bt_set_format_options()
void bt_set_format_options (bt_name_format * format,
bt_namepart part,
boolean abbrev,
bt_joinmethod join_tokens,
bt_joinmethod join_part)
Allows further customization of a name format: you can set the abbreviation flag and
the two token-join methods. Alas, there is no mechanism for leaving a value
unchanged; you must set everything with "bt_set_format_options()".
For example, let's say that just dropping periods from abbreviated tokens in the first
name isn't enough; you really want to save space by jamming the abbreviated tokens
together: "JR Smith" rather than "J R Smith" Assuming the two calls in the above
example have been done, the following will finish the job:
bt_set_format_options (format, BTN_FIRST,
TRUE, /* keep same value for abbrev flag */
BTJ_NOTHING, /* jam tokens together */
BTJ_SPACE); /* space after final token of part */
Note that we unfortunately had to know (and supply) the current values for the
abbreviation flag and post-part join method, even though we were only setting the
intra-part join method.
bt_format_name()
char * bt_format_name (bt_name * name, bt_name_format * format)
Once a name format has been created and customized to your heart's content, you can
use it to format any number of names that have been split with "bt_split_name" (see
bt_split_names). Simply pass the name structure and name format structure, and a
newly-allocated string containing the formatted name will be returned to you. It is
your responsibility to "free()" this string.
SEE ALSO
btparse, bt_split_names
AUTHOR
Greg Ward <gward@python.net>