newlocale --- create or modify a locale object
#include <locale.h> locale_t newlocale(int category_mask, const char *locale, locale_t base);
The newlocale() function shall create a new locale object or modify an existing one. If the base argument is (locale_t)0, a new locale object shall be created. It is unspecified whether the locale object pointed to by base shall be modified, or freed and a new locale object created. The category_mask argument specifies the locale categories to be set or modified. Values for category_mask shall be constructed by a bitwise- inclusive OR of the symbolic constants LC_CTYPE_MASK, LC_NUMERIC_MASK, LC_TIME_MASK, LC_COLLATE_MASK, LC_MONETARY_MASK, and LC_MESSAGES_MASK, or any of the other implementation-defined LC_*_MASK values defined in <locale.h>. For each category with the corresponding bit set in category_mask the data from the locale named by locale shall be used. In the case of modifying an existing locale object, the data from the locale named by locale shall replace the existing data within the locale object. If a completely new locale object is created, the data for all sections not requested by category_mask shall be taken from the default locale. The following preset values of locale are defined for all settings of category_mask: "POSIX" Specifies the minimal environment for C-language translation called the POSIX locale. "C" Equivalent to "POSIX". "" Specifies an implementation-defined native environment. This corresponds to the value of the associated environment variables, LC_* and LANG; see the Base Definitions volume of POSIX.12008, Chapter 7, Locale and Chapter 8, Environment Variables. If the base argument is not (locale_t)0 and the newlocale() function call succeeds, the contents of base are unspecified. Applications shall ensure that they stop using base as a locale object before calling newlocale(). If the function call fails and the base argument is not (locale_t)0, the contents of base shall remain valid and unchanged. The behavior is undefined if the base argument is the special locale object LC_GLOBAL_LOCALE, or is not a valid locale object handle and is not (locale_t)0.
Upon successful completion, the newlocale() function shall return a handle which the caller may use on subsequent calls to duplocale(), freelocale(), and other functions taking a locale_t argument. Upon failure, the newlocale() function shall return (locale_t)0 and set errno to indicate the error.
The newlocale() function shall fail if: ENOMEM There is not enough memory available to create the locale object or load the locale data. EINVAL The category_mask contains a bit that does not correspond to a valid category. ENOENT For any of the categories in category_mask, the locale data is not available. The newlocale() function may fail if: EINVAL The locale argument is not a valid string pointer. The following sections are informative.
Constructing a Locale Object from Different Locales The following example shows the construction of a locale where the LC_CTYPE category data comes from a locale loc1 and the LC_TIME category data from a locale tok2: #include <locale.h> ... locale_t loc, new_loc; /* Get the "loc1" data. */ loc = newlocale (LC_CTYPE_MASK, "loc1", (locale_t)0); if (loc == (locale_t) 0) abort (); /* Get the "loc2" data. */ new_loc = newlocale (LC_TIME_MASK, "loc2", loc); if (new_loc != (locale_t) 0) /* We don t abort if this fails. In this case this simply used to unchanged locale object. */ loc = new_loc; ... Freeing up a Locale Object The following example shows a code fragment to free a locale object created by newlocale(): #include <locale.h> ... /* Every locale object allocated with newlocale() should be * freed using freelocale(): */ locale_t loc; /* Get the locale. */ loc = newlocale (LC_CTYPE_MASK | LC_TIME_MASK, "locname", (locale_t)0); /* ... Use the locale object ... */ ... /* Free the locale object resources. */ freelocale (loc);
Handles for locale objects created by the newlocale() function should either be released by a corresponding call to freelocale(), or be used as a base locale to another newlocale() call. The special locale object LC_GLOBAL_LOCALE must not be passed for the base argument, even when returned by the uselocale() function.
None.
None.
duplocale(), freelocale(), uselocale() The Base Definitions volume of POSIX.12008, Chapter 7, Locale, Chapter 8, Environment Variables, <locale.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.