67 lines
1.4 KiB
PHP
67 lines
1.4 KiB
PHP
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<?php
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namespace LibRIS;
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/**
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* Class for writing RIS data.
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*
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* General usage:
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* @code
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* <?php
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* use \LibRIS\RISWriter;
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*
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* $writer = new RISWriter();
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*
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* // Write an associative array of records to a string.
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* $str = $writer->writeRecords($records);
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* ?>
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* @endcode
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*/
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class RISWriter {
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public function __construct() {}
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/**
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* Write a series of records to a single RIS string.
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*
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* @param array $records
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* An array in the format generated by RISReader::parseFile()
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* @retval string
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* The record as a string.
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*/
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public function writeRecords($records) {
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$buffer = array();
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foreach ($records as $record) {
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$buffer[] = $this->writeRecord($record);
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}
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return implode(RISReader::RIS_EOL, $buffer);
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}
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/**
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* Write a single record as an RIS string.
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*
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* The record should be an associative array of tags to values.
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*
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* @param array $tags
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* An associative array of key => array(value1, value2,...).
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* @retval string
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* The record as a string.
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*/
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public function writeRecord($tags) {
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$buffer = array();
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$fmt = '%s - %s';
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$buffer[] = sprintf($fmt, 'TY', $tags['TY'][0]);
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unset($tags['TY']);
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foreach ($tags as $tag => $values) {
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foreach ($values as $value) {
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$buffer[] = sprintf($fmt, $tag, $value);
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}
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}
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$buffer[] = 'ER - ';
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return implode(RISReader::RIS_EOL, $buffer);
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}
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}
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