Struct crowbook_text_processing::FrenchFormatter

pub struct FrenchFormatter { /* private fields */ }

French typographic formatter.

The purpose of this struct is to try to make a text more typographically correct, according to french typographic rules. This means:

• making spaces before ?, !, ; narrow non-breaking space;
• making spaces before : non-breaking space;
• making space after — for dialog a demi em space;
• making spaces after « and before » non-breking space or narrow non-breking space, according to the circumstances (dialog or a few quoted words).
• making spaces in numbers, e.g. 80 000 or 50 € narrow and non-breaking.

Additionally, this feature use functions that are “generic” (not specific to french language) in order to:

• replace straight quotes (' and ") with curly, typographic ones;
• replace ellipsis (...) with the unicode character (…).

As some of these features require a bit of guessing sometimes, there are some paremeters that can be set if you want better results.

Example

use crowbook_text_processing::FrenchFormatter;
let input = "Un texte à 'formater', n'est-ce pas ?";
let output = FrenchFormatter::new()
             .typographic_ellipsis(false) // don't replace ellipsis
             .format_tex(input); // format to tex (so non-breaking
                                 // spaces are visible in assert_eq!)
assert_eq!(&output, "Un texte à ‘formater’, n’est-ce pas\\,?");

Implementations

impl FrenchFormatter

pub fn new() -> Self

Create a new FrenchFormatter with default settings

pub fn threshold_currency(&mut self, t: usize) -> &mut Self

Sets the threshold currency.

After that number of characters, assume it’s not a currency

Default is 3.

pub fn threshold_unit(&mut self, t: usize) -> &mut Self

Sets the threshold for unit.

After that number of characters, assume it’s not an unit.

Default is 2.

pub fn threshold_quote(&mut self, t: usize) -> &mut Self

Sets the threshold for quote.

After that number of characters, assume it’s not a quote of a single word or a few words, but a dialog.

Default is 20.

pub fn threshold_real_word(&mut self, t: usize) -> &mut Self

Sets the threshold for real word.

After that number of characters, assume it’s not an abbreviation but a real word (used to determine if . marks the end of a sentence or just a title such as M. Dupuis.

Default is 3

pub fn typographic_quotes(&mut self, b: bool) -> &mut Self

Enables the typographic quotes replacement.

If true, “L’” will be replaced by “L’”

Default is true

pub fn typographic_ellipsis(&mut self, b: bool) -> &mut Self

Enables typographic ellipsis replacement.

If true, “…” will be replaced by “…”

Default is true

pub fn ligature_dashes(&mut self, b: bool) -> &mut Self

If set to true, replaces --to – and --- to —.

Default is false.

pub fn ligature_guillemets(&mut self, b: bool) -> &mut Self

If set to true, replaces << to « and >> to ».

Default is false.

pub fn format<'a, S: Into<Cow<'a, str>>>(&self, input: S) -> Cow<'a, str>

(Try to) Format a string according to french typographic rules.

This method should be called for each paragraph, as it makes some suppositions that the beginning of the string also means the beginning of a line.

This method calls remove_whitespaces internally, as it relies on it.

Example

use crowbook_text_processing::FrenchFormatter;
let f = FrenchFormatter::new();
let s = f.format("« Est-ce bien formaté ? » se demandait-elle — les espaces \
                  insécables étaient tellement compliquées à gérer,
                  dans cette langue !");
println!("{}", s);

pub fn format_tex<'a, S: Into<Cow<'a, str>>>(&self, input: S) -> Cow<'a, str>

(Try to) Format a string according to french typographic rules, escape the characters that need to be escaped in LaTeX (e.g. backslashes) and use TeX commands (“~”, “\enspace” “and “,”) for non-breaking spaces so it works correctly with some LaTeX versions (and it makes the non-breaking spaces shenanigans more visible with most editors)

Example

use crowbook_text_processing::FrenchFormatter;
let f = FrenchFormatter::new();
let s = f.format_tex("« Est-ce bien formaté ? »");
assert_eq!(&s, "«~Est-ce bien formaté\\,?~»");

pub fn format_html<'a, S: Into<Cow<'a, str>>>(&self, input: S) -> Cow<'a, str>

(Try to) Format a string according to french typographic rules, and escape the characters that need to be escaped in HTML (e.g. &). Also use HTML commands instead of unicode for narrow non-breaking spaces. See escape::nb_spaces_html. It’s a bit of a hack to make it work in most browsers/ereaders.

Trait Implementations

impl Debug for FrenchFormatter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FrenchFormatter

fn default() -> Self

Returns the “default value” for a type.