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易焱
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<?php
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namespace OT;
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class DataDictionary{
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public function __construct($table){
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$this->headers = $table['header'];
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$this->rows = $table['rows'];
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$this->crossingChar = '+';
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$this->horizontalBorderChar = '-';
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$this->verticalBorderChar = '|';
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$this->borderFormat = '%s';
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$this->cellHeaderFormat = '%s';
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$this->cellRowFormat = '%s';
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$this->paddingChar = ' ';
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$this->padType = STR_PAD_RIGHT;
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}
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/**
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* Renders table to output.
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*
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* Example:
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* +---------------+-----------------------+------------------+
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* | ISBN | Title | Author |
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* +---------------+-----------------------+------------------+
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* | 99921-58-10-7 | Divine Comedy | Dante Alighieri |
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* | 9971-5-0210-0 | A Tale of Two Cities | Charles Dickens |
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* | 960-425-059-0 | The Lord of the Rings | J. R. R. Tolkien |
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* +---------------+-----------------------+------------------+
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*
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*/
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public function render($out = true){
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if(!$this->rows)
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exit('invalid table content');
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//获得表头行首 +---------------+-----------------------+------------------+
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$output = $this->renderRowSeparator();
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//获取头部输出| ISBN | Title | Author |
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$output .= $this->renderRow($this->headers, $this->cellHeaderFormat);
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//header存在的话再输出行分割符
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if ($this->headers) {
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$output .= $this->renderRowSeparator();
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}
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//渲染每一行
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foreach ($this->rows as $row) {
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$output .= $this->renderRow($row, $this->cellRowFormat);
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}
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if ($this->rows) {
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$output .= $this->renderRowSeparator();
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}
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if($out){
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exit($output);
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}else{
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$this->cleanup();
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return $output;
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}
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}
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public function renderWitoutHeadTail($out = true){
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if(!$this->rows)
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exit('invalid table content');
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//获取头部输出| ISBN | Title | Author |
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$output .= $this->renderRow($this->headers, $this->cellHeaderFormat);
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//header存在的话再输出行分割符
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if ($this->headers) {
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$output .= $this->renderRowSeparator();
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}
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//渲染每一行
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foreach ($this->rows as $row) {
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$output .= $this->renderRow($row, $this->cellRowFormat);
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}
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if($out){
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print($output);
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}else{
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$this->cleanup();
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return $output;
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}
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}
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//渲染表格行起始分割行
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private function renderRowSeparator(){
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if (0 === $count = $this->getNumberOfColumns()) {
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return;
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}
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$markup = $this->crossingChar;
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for ($column = 0; $column < $count; $column++) {
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$markup .= str_repeat($this->horizontalBorderChar, $this->getColumnWidth($column))
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.$this->crossingChar
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;
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}
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return sprintf($this->borderFormat, $markup).PHP_EOL;
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}
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/**
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* 渲染表格行.
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*
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* Example: | 9971-5-0210-0 | A Tale of Two Cities | Charles Dickens |
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*
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* @param array $row
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* @param string $cellFormat
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*/
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private function renderRow(array $row, $cellFormat){
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if (empty($row)) {
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return;
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}
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$output = $this->renderColumnSeparator();
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for ($column = 0, $count = $this->getNumberOfColumns(); $column < $count; $column++) {
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$output .= $this->renderCell($row, $column, $cellFormat);
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$output .= $this->renderColumnSeparator();
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}
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$output .= $this->writeln('');
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return $output;
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}
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/**
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* 带边距的渲染单元格.
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*
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* @param array $row
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* @param integer $column
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* @param string $cellFormat
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*/
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private function renderCell(array $row, $column, $cellFormat){
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$cell = isset($row[$column]) ? $row[$column] : '';
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return sprintf(
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$cellFormat,
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$this->str_pad(
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$this->paddingChar.$cell.$this->paddingChar,
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$this->getColumnWidth($column),
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$this->paddingChar,
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$this->padType
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)
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);
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}
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/**
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* 渲染水平列分隔符.
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*/
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private function renderColumnSeparator(){
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return(sprintf($this->borderFormat, $this->verticalBorderChar));
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}
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/**
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* 获取表格的列数.
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*
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* @return int
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*/
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private function getNumberOfColumns() {
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if (null !== $this->numberOfColumns) {
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return $this->numberOfColumns;
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}
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$columns = array(0);
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$columns[] = count($this->headers);
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foreach ($this->rows as $row) {
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$columns[] = count($row);
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}
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return $this->numberOfColumns = max($columns);
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}
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/**
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* 获取列宽.
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*
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* @param integer $column
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*
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* @return int
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*/
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private function getColumnWidth($column) {
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if (isset($this->columnWidths[$column])) {
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return $this->columnWidths[$column];
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}
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$lengths = array(0);
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$lengths[] = $this->getCellWidth($this->headers, $column);
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foreach ($this->rows as $row) {
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$lengths[] = $this->getCellWidth($row, $column);
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}
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return $this->columnWidths[$column] = max($lengths) + 2;
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}
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/**
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* 获取单元格宽度.
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*
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* @param array $row
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* @param integer $column
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*
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* @return int
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*/
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private function getCellWidth(array $row, $column) {
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if ($column < 0) {
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return 0;
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}
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if (isset($row[$column])) {
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return $this->strlen($row[$column]);
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}
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return $this->getCellWidth($row, $column - 1);
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}
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/**
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* Returns the length of a string, using mb_strlen if it is available.
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*
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* @param string $string The string to check its length
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*
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* @return integer The length of the string
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*/
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protected function strlen($string) {
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// if (!function_exists('mb_strlen')) {
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return (strlen($string) + mb_strlen($string,'UTF8')) / 2;
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// }
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// if (false === $encoding = mb_detect_encoding($string)) {
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// return strlen($string);
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// }
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// return mb_strlen($string, $encoding);
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}
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/**
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* Called after rendering to cleanup cache data.
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*/
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private function cleanup(){
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$this->columnWidths = array();
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$this->numberOfColumns = null;
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}
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public function writeln($line=''){
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return $line.PHP_EOL;
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}
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public function str_pad($input , $pad_length ,$pad_string , $pad_type){
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$strlen = $this->strlen($input);
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if($strlen < $pad_length){
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$difference = $pad_length - $strlen;
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switch ($pad_type) {
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case STR_PAD_RIGHT:
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return $input . str_repeat($pad_string, $difference);
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break;
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case STR_PAD_LEFT:
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return str_repeat($pad_string, $difference) . $input;
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break;
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default:
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$left = $difference / 2;
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$right = $difference - $left;
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return str_repeat($pad_string, $left) . $input . str_repeat($pad_string, $right);
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break;
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}
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}else{
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return $input;
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}
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}
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//生成当前数据库指定表的数据字典（字符串）
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public function generate($tableName=''){
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$this->crossingChar = '|';
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$out_array = array();
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$output = '';
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if($tableName){
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echo substr($tableName, strlen(C('DB_PREFIX'))).PHP_EOL;
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$rows = array();
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$array = M()->query('SHOW FULL COLUMNS FROM '.$tableName);
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foreach ($array as $key => $value) {
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$rows[] = array($value['Field'], $value['Type'], $value['Comment']);
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}
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$this->headers = array('字段','类型','注释');
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$this->rows = $rows;
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$this->renderWitoutHeadTail();
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}
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echo PHP_EOL;
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}
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public function generateAll(){
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$tables = M()->query('SHOW TABLE STATUS;');
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$tables = array_column($tables,'Name');
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foreach ($tables as $value) {
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$this->generate($value);
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$this->cleanup();
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}
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}
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}
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