使用AutoIt在循环中解析CSV文件的所有行

问题描述 投票:-1回答:3

我有以下代码来读取包含两行数据的.csv文件。我不知道它有什么问题。如何改进它以读取包含两行数据的.csv文件?

#include <GUIConstants.au3>
#include <string.au3>

$file = FileOpen("test.csv", 0)

If $file = -1 Then
    MsgBox(0, "error", "File doesn't exist or can't be read")
    Exit
EndIf

$string = (FileReadLine($file, 1))
$input = StringSplit($string, ",", 1)
$input = StringSplit($string, ",", 1)
Local $value1 = $input[1]
ConsoleWrite("var=" & $value1)
autoit
3个回答
2
投票

_ParseCSV()的返回值是2D数组

$array[1][1] first line first data
$array[1][2] first line second data
$array[3][5] 3rd line 5th data

$array[0][0] gives number of lines
$array[0][1] gives number of data in each line

不需要包括

PARAMS:

  1. 文件名
  2. 分隔符
  3. 消息显示如果无法打开文件
  4. logical true / false跳过文件的第一行

; _ParseCSV(“filename”,“,”,“如果发生错误则发出消息”,true)

Func _ParseCSV($f,$Dchar,$error,$skip)

  Local $array[500][500]
  Local $line = ""

  $i = 0
  $file = FileOpen($f,0)
  If $file = -1 Then
    MsgBox(0, "Error", $error)
    Return False
   EndIf

  ;skip 1st line
  If $skip Then $line = FileReadLine($file)

  While 1
       $i = $i + 1
       Local $line = FileReadLine($file)
       If @error = -1 Then ExitLoop
       $row_array = StringSplit($line,$Dchar)
        If $i == 1 Then $row_size = UBound($row_array) 
        If $row_size <> UBound($row_array) Then  MsgBox(0, "Error", "Row: " & $i & " has different size ")
        $row_size = UBound($row_array)
        $array = _arrayAdd_2d($array,$i,$row_array,$row_size)

   WEnd
  FileClose($file)
  $array[0][0] = $i-1 ;stores number of lines
   $array[0][1] = $row_size -1  ; stores number of data in a row (data corresponding to index 0 is the number of data in a row actually that's way the -1)
   Return $array

EndFunc
Func _arrayAdd_2d($array,$inwhich,$row_array,$row_size)
    For $i=1 To $row_size -1 Step 1
        $array[$inwhich][$i] = $row_array[$i]
  Next
  Return $array
   EndFunc

0
投票

这是一个程序,它将读取包含2行的CSV文件并输出两个数据字段。如果有更多行,则将输入数组更改为更大。

#include <GUIConstants.au3>
#include <string.au3>

$file = FileOpen("test.csv", 0)

If $file = -1 Then
   MsgBox(0, "error", "File doesn't exist or can't be read")
   Exit
EndIf

   ; Read in lines of text until the EOF is reached
While 1
    Local $line = FileReadLine($file)
    If @error = -1 Then ExitLoop
   $input = StringSplit($line, ",")

   ;This is reading fields 1 and 2. 
   ;The array index [0] 
   ;it will tell you how big the array is.
   Local $value1 = $input[1]
   Local $value2 = $input[2]
   ConsoleWrite("var=" & $value1)
   ConsoleWrite("var=" & $value2)

WEnd

0
投票

至于解析CSV文件,最好使用库(用户定义的函数),尤其是在例如具有带引号字符串的复杂CSV(“单元格”/字符串中的逗号)或换行符,这些很难处理。

我能推荐的最好的是CSVSplit。基本上你有一个函数_CSVSplit,它接受一个完整的CSV文件(内容,即字符串!)并返回一个二维数组:

Local $sCSV = FileRead($sFilePath)
If @error Then ; ....

$aSplitArray = _CSVSplit($sCSV, ",")

然后,您可以使用此数组执行所需的任何操作。显然,CSVSplit还提供了“反向”功能,可以将数组再次转换为CSV字符串,_ArrayToCSV

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