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new feature: auto detect if parsed file has heading

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This commit is contained in:
Susann Sgorzaly
2018-02-26 09:46:44 +01:00
parent ef44ea3989
commit 951fc68886
2 changed files with 59 additions and 1 deletions
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40
src/extensions/DatatypeTrait.php
View File

@@ -2,6 +2,8 @@
namespace ParseCsv\extensions;
use ParseCsv\enums\DatatypeEnum;
trait DatatypeTrait {
/**
@@ -47,7 +49,7 @@ trait DatatypeTrait {
*
* @access public
*
* @uses getDatatypeFromString
* @uses DatatypeEnum::getValidTypeFromSample
*
* @return array|bool
*/
@@ -71,4 +73,40 @@ trait DatatypeTrait {
return !empty($this->data_types) ? $this->data_types : [];
}
/**
* Check data type of titles / first row for auto detecting if this could be
* a heading line.
*
* Requires PHP >= 5.5
*
* @access public
*
* @uses DatatypeEnum::getValidTypeFromSample
*
* @return bool
*/
public function autoDetectFileHasHeading(){
if (empty($this->data)){
throw new \UnexpectedValueException('No data set yet.');
}
if ($this->heading){
$firstRow = $this->titles;
} else {
$firstRow = $this->data[0];
}
if (empty(array_filter($firstRow))){
return false;
}
$firstRowDatatype = array_map('ParseCsv\enums\DatatypeEnum::getValidTypeFromSample', $firstRow);
if ($this->getMostFrequentDatatypeForColumn($firstRowDatatype) !== DatatypeEnum::TYPE_STRING){
return false;
}
return true;
}
}

20
tests/methods/ParseTest.php
View File

@@ -157,6 +157,26 @@ class ParseTest extends TestCase
$this->assertEquals($expected, $this->csv->data_types);
}
public function testAutoDetectFileHasHeading(){
$this->csv->auto(__DIR__ . '/fixtures/datatype.csv');
$this->assertTrue($this->csv->autoDetectFileHasHeading());
$this->csv->heading = false;
$this->csv->auto(__DIR__ . '/fixtures/datatype.csv');
$this->assertTrue($this->csv->autoDetectFileHasHeading());
$this->csv->heading = false;
$sInput = "86545235689\r\n34365587654\r\n13469874576";
$this->csv->auto($sInput);
$this->assertFalse($this->csv->autoDetectFileHasHeading());
$this->csv->heading = true;
$sInput = "86545235689\r\n34365587654\r\n13469874576";
$this->csv->auto($sInput);
$this->assertFalse($this->csv->autoDetectFileHasHeading());
}
protected function _get_magazines_data() {
return [
[