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LIBEXSLT

Section: C Library Functions (3)
Updated: 04 November 2003
Index Return to Main Contents

NAME

libexslt - extension library for XSLT

SYNOPSIS

#include <libexslt/exslt.h>

void exsltCommonRegister(void);
void exsltDateRegister(void);
void exsltDynRegister(void);
void exsltFuncRegister(void);
void exsltMathRegister(void);
void exsltSetsRegister(void);
void exsltStrRegister(void);
void exsltRegisterAll(void);
void exsltSaxonRegister(void);

DESCRIPTION

The libexslt library is used to provide extensions to XSLT functions. These extensions come from the EXSLT project <http://www.exslt.org/>

USAGE

To make use of these functions in XSLT the appropriate namespace must be defined on the xsl:stylesheet element. To enable support for them in libxslt(3) you must call the appropriate functions (listed in the SYNOPSIS section) to register the extensions. The xslt-config shell script can be used to obtain the necessary flags for the pre-processor and linker. The supported extensions are:

COMMON

Namespace: http://exslt.org/common
See http://www.exslt.org/exsl/index.html for a description.
node-set(): convert the given RTF into a node-set.
object-type(): returns the type of the given argument.
document: Create multiple output documents. See http://www.exslt.org/exsl/elements/document/index.html

MATH

Namespace: http://exslt.org/math
See http://www.exslt.org/math/index.html for a description.
min(): returns the minimum value of the given node-set
max(): returns the maximum value of the given node-set
highest(): returns the nodes in the node-set whose value is the maximum value for the node-set.
lowest(): returns the nodes in the node-set whose value is the minimum value for the node-set.
constant(): returns a number value of the given constant with the given precision. The constants are PI, E, SQRRT2, LN2, LN10, LOG2E, and SQRT1_2.
random(): returns a random number between 0 and 1 inclusive.
abs(): returns the absolute value of the argument.
sqrt(): returns the square root of the argument.
power(): returns the power base and power arguments.
log(): returns the natural log of the argument.
sin(): returns the sine of the argument.
cos(): returns the cosine of the argument.
tan(): returns the tangent of the argument.
asin(): returns the arc sine of the argument.
acos(): returns the arc cosine of the argument.
atan(): returns the arc tangent of the argument.
atan2(): returns the arc tangent function of the y/x arguments.
exp(): returns the exponential function of the argument.

SETS

Namespace: http://exslt.org/sets
See http://www.exslt.org/set/index.html for a description.
difference(): returns the difference between the two given node-sets.
intersection(): returns a node-set of the nodes within both given node-sets.
distinct(): returns a node-set of all nodes in the first argument that are not in the seconds argument.
has-same-node(): returns TRUE if there is an intersection between the two given node-sets.
leading(): returns a node-set of all nodes in the first argument that precede the first node in the second argument.
trailing(): returns a node-set of all nodes in the first argument that follow the first node in the second argument.

DATES and TIMES

Namespace: http://exslt.org/dates-and-times
See http://www.exslt.org/date/date.html for a description.
date-time(): returns the current date and time as a date/time string.
date(): returns the date specified in the given date/time string.
time(): returns the time specified in the date/time string given as the argument.
year(): returns the year of a date as a number.
leap-year(): returns true if the year given in a date is a leap year.
month-in-year(): returns the month of a date as a number.
month-name(): returns the full name of the month of a date.
month-abbreviation(): returns the abbreviation of the month of a date.
week-in-year(): returns the week of the year as a number.
week-in-month(): returns the week in a month of a date as a number.
day-in-year(): returns the month of a date as a number.
day-in-month(): returns the day of a date as a number.
day-of-week-in-month(): returns the day-of-the-week in a month of a date as a number.
day-in-week(): returns the day of the week given in a date as a number.
day-name(): returns the full name of the day of the week of a date.
day-abbreviation(): returns the abbreviation of the day of the week of a date.
hour-in-day(): returns the hour of the day as a number.
minute-in-hour(): returns the minute of the hour as a number.
second-in-minute(): returns the second of the minute as a number.
seconds(): returns the number of seconds specified by the argument string.
add(): returns the date/time resulting from adding a duration to a date/time.
add-duration(): returns the duration resulting from adding two given durations together.
difference(): returns the duration between the first date and the second date.
duration(): returns a duration string that represents the given number of seconds since 1970-01-01T00:00:00.

STRINGS

Namespace: http://exslt.org/strings
See http://www.exslt.org/str/index.html for a description.
tokenize(): returns a node set of token elements, each containing one token from the string.
padding(): returns a string padded to a certain length.
align(): returns a string aligned within another string.
concat(): returns the concatenation of the string values of the nodes in that node set.