-1

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)
4

3 回答 3

2

_ParseCSV() 的返回值是二维数组，如

$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

不需要包含

参数：

  1. 文件名
  2. 分界线
  3. 无法打开文件时显示消息
  4. 逻辑真/假跳过文件的第一行

;_ParseCSV("文件名",",","发生错误时的消息",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
于 2013-12-14T21:00:16.600 回答
0

这是一个程序，它将读取 2 行的 CSV 文件并输出两个数据字段。如果您有更多行，请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
于 2012-12-19T01:18:03.380 回答
0

至于解析 CSV 文件，您可能最好使用库（用户定义的函数），特别是如果您有带有引号字符串（“单元格”/字符串内的逗号）或换行符的复杂 CSV，这很难处理。

我可以推荐的最好的是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, ",")

然后你可以用这个数组做你想做的一切。显然，CSVSplit还提供了“反向”功能，可以将数组再次转为 CSV 字符串，_ArrayToCSV.

于 2019-03-12T07:08:12.313 回答