Length Task

## Length

### Description

Display or set a property containing length information for a string, a file, or one or more nested Resource Collections. Can also be used as a condition. Since Apache Ant 1.6.3

### Parameters

Attribute | Description | Required
property | The property to set. If omitted the results are written to the log. Ignored when processing as a condition. | No
file | Single file whose length to report. | One of these, or one or more nested filesets
resource | Single resource whose length to report (using extended properties handling). Since Ant 1.8.1
string | The string whose length to report.
mode | File length mode; when "all" the resulting value is the sum of all included resources' lengths; when "each" the task outputs the absolute path and length of each included resource, one per line. Ignored when processing as a condition. | No; default is "all"
trim | Whether to trim when operating on a string. Default false. | No; only valid when string is set
length | Comparison length for processing as a condition. | Yes, in condition mode
when | Comparison type: "equal", "eq", "greater", "gt", "less", "lt", "ge" (greater or equal), "ne" (not equal), "le" (less or equal) for use when operating as a condition. | No; default is "equal"

### Parameters specified as nested elements

#### Resource Collections

You can include resources via nested Resource Collections.

### Examples

    <length string="foo" property="length.foo" />

Stores the length of the string "foo" in the property named length.foo.

    <length file="bar" property="length.bar" />

Stores the length of file "bar" in the property named length.bar.

    <length property="length" mode="each">
        <fileset dir="." includes="foo,bar"/>
    </length>

Writes the file paths of foo and bar and their length into the property length.

    <length property="length" mode="all">
        <fileset dir="." includes="foo,bar"/>
    </length>

Adds the length of foo and bar and stores the result in property length.