stringi (version 0.1-25)

stringi-package: THE String Processing Package

Description

stringi is THE Rpackage for very fast, correct, consistent, and convenient string/text manipulation in each locale and any character encoding. We are putting great effort to create software that works as you expect on any platform, in each locale, and any ``native'' system encoding.

Keywords: internationalization, localization, ICU, ICU4C, i18n, l10n, Unicode

Homepage: http://stringi.rexamine.com

License: The BSD-3-clause license for the package code, the ICU license for accompanying ICU4C distribution, and the UCD license for the Unicode Character Database. See the COPYRIGHTS and LICENSE file for more details.

Facilities available

Refer to the following:

• stringi-searchfor string searching facilities; these include pattern searching, matching, string splitting, and so on. The following independent search engines are provided:
  • stringi-search-regex-- with ICU (Java-like) regular expressions;
  • stringi-search-fixed-- Locale-aware or byte-exact fixed pattern searching;
  • stringi-search-charclass-- for finding character classes, like ``all whitespaces'' or ``all digits''.
• stri_stats_generalandstri_stats_latexfor gathering some statistics on a character vector's contents.
• stri_join,stri_dup, andstri_flattenfor concatenation-based operations.
• stri_subfor extracting and replacing substrings, andstri_reversefor a funny function to reverse all characters in a string.
• stri_trim(among others) for trimming characters from the beginning or/and end of a string, see alsostringi-search-charclass.
• stri_length(among others) for determining the number of code points in a string.
• stri_trans_tolower(among others) for case mapping, i.e. conversion to lower, UPPER, or Title case.
• stri_compare,stri_order, andstri_sortfor comparison-based, locale-aware operations, see alsostringi-locale.
• stri_split_lines(among others) to split a string into text lines.
• stri_escape_unicode(among others) for escaping certain code points.
• DRAFT API:stri_read_raw,stri_read_lines, andstri_write_linesfor reading and writing text files.
• TO DO [these will appear in future versions ofstringi]: pad, wrap, justify, HTML entities, character translation, MIME Base 64 encode/decode, random string generation, number and data/time formatting, and many more.

Note that each man page has many links to other interesting facilities.

The stringi user is encouraged to call stri_install_check after the package installation.

Details

Manual pages on general topics (must-read):

• stringi-encoding-- character encoding issues, including information on encoding management instringi, as well as on encoding detection, conversion, and Unicode normalization.
• stringi-locale-- locale issues, including i.a. locale management and specification instringi, and the list of locale-sensitive operations. In particular, seestri_opts_collatorfor a description of the string collation algorithm, which is used for string comparing, ordering, sorting, casefolding, and searching.
• stringi-arguments-- howstringideals with its functions' arguments.

References

stringi Package homepage, http://stringi.rexamine.com

ICU -- International Components for Unicode, http://www.icu-project.org/

ICU4C API Documentation, http://www.icu-project.org/apiref/icu4c/

The Unicode Consortium, http://www.unicode.org/

UTF-8, a transformation format of ISO 10646 -- RFC 3629, http://tools.ietf.org/html/rfc3629

See Also

Other stringi_general_topics: stringi-arguments; stringi-encoding; stringi-locale; stringi-search-charclass; stringi-search-fixed; stringi-search-regex; stringi-search