我有一些YAML文件，我需要使用MS Excel宏在Excel中填充这些数据。我能够读取YAML文件并尝试逐行读取并找到语义。但这个过程变得越来越复杂。我正在寻找替代解决方案。
是否有适用于Excel VBA的YAML解析器？如果是这样，你能建议一下吗？我需要Hash of Hash格式的YAML，这样我就可以以哈希格式的哈希方式访问YAML数据了？
由于 杰文
答案 0 :(得分：0)
我试图找到一个随时可用的解决方案但没有找到。 我做了一些可用的东西它不是纯YAML解释器，但可以解析键：值数据。
功能VBA ParseYAML
Sub ParseYAML()
Dim myFile As String, text As String, textline As String
' open YAML file
myFile = Application.GetOpenFilename()
' verify if a file were open
If Not myFile = "Falsch" Then
Open myFile For Input As #1
Dim dataArray
Dim c As Collection
Set c = New Collection
Line = 0
Do Until EOF(1)
Line Input #1, textline
oneline = Replace(textline, " ", "")
dataArray = Split(oneline, ":", 2)
sizeArray = UBound(dataArray, 1) - LBound(dataArray, 1) + 1
' Verification Empty Lines and Split don't occur
If Not textline = "" And Not sizeArray = 0 Then
Data = dataArray(1)
Key = dataArray(0)
' test if line don't start with -
If InStr(1, Key, "-") = 0 Then
c.Add Data, Key
End If
' just for debug
Line = Line + 1
'text = text & textline
End If
Loop
Close #1
Range("D6").Value = c.Item("key1")
Range("D7").Value = c.Item("key2")
Range("C18").Value = c.Item("key3")
Set c = Nothing
End If
End Sub
YAML文件示例
- 第1节：
KEY1：DATA1
KEY2：DATA2
- 第2节：
key3：data3
答案 1 :(得分：0)
如果使用cJObject.cls，我们可以将yaml文件转换为cJObject。
https://medium.com/@sakai.memoru/convert-a-yaml-file-to-cjobject-in-vba-2fee22e85818
示例YAML文件
# YAML
martin:
name: Martin Jobson
job: Developer
skills:
- fortran
- lisp
- erlang
代码示例
Sub TestYaml2Json()
'''' *********************************************
''
Dim objYaml As O_YAML
Set objYaml = New O_YAML
''
Dim file_name As String
Let file_name = "input/yamlformat.yaml"
''
Dim jObj As cJobject
Set jObj = New cJobject
''
Set jObj = objYaml.YamlFileToJObject(file_name)
Console.info jObj.formatData
Console.info jObj.serialize
''
End Sub
即时窗口
{“martin”:{“name”:”Martin Jobson”,”job”:”Developer”,”skills”:[“fortran”,”lisp”,”erlang” ]}}
答案 2 :(得分：0)
在 cgasp 的 answer 上扩展此函数处理嵌套并将 YAML 文件加载到数组中，此外它还可以在 VBA、VBS、HTA 上下文中运行。
Public Function ParseYAMLtoArray(ByVal filePath) ' as array
' Version 1.0.4
' Dependencies: NONE
' Modified from this post: https://stackoverflow.com/a/40659701/1146659
' License: - CC BY-SA 4.0 - <https://creativecommons.org/licenses/by-sa/4.0/>
' Contributors: cgasp <https://stackoverflow.com/users/1862421/cgasp>; Jeremy D. Gerdes <jeremy.gerdes@navy.mil>;
' Reference: https://yaml.org/refcard.html
' Usage Example: debug.print ParseYAMLtoArray(GetCurrentFileFolder() & "\" & "documentation" & "\" & "exampleNested.yaml")(1,3)
' Notes: Using late binding to run for all vb engines
' -------------------------------
' Known ParserIssues:
' - Niave: This is not spec conforming, just usefull enough, use another parser if you need more features.
' See spec at: http://yaml.org/spec/1.2/spec.html
' - A block scalar indicator should include all subsequent rows that have the same white space intentation past the current line
' this parser fails to do this if any of those following row contains a ":"
' - YAML denotes nesting via indent delimitation (white space), this parser attempts to record nested "{level=n}" in the data
' column for each empty Category, and ignores all other nesting.
' -This parser ignores all cast data types like "!!float " whatever is accepting the results of this Public Function will
' have to handle any type casting in the YAML document.
Const ForReading = 1
Dim arryReturn() ' As variant
Dim text ' As String
Dim textline ' As String
Dim objFSO 'As Scripting.FileSystemObject
Dim objFile 'As Scripting.TextStream
Dim intLastLineWhiteSpace 'As Integer
Dim dataArray 'As Variant
Dim sizeArray 'As Long
Dim oneline 'As String
Dim Data 'As Variant
Dim Key 'As Variant
Dim intRow 'as integer
Dim intColumn 'as integer
Dim intNestingLevel 'As Integer
Dim intLastNestingSpaces 'As Integer
Dim intCurrentNestingSpaces 'As Integer
Dim intThisLineWhiteSpace
Dim fIsNestedHeader
Set objFSO = CreateObject("Scripting.FileSystemObject")
' verify if file exists
If objFSO.FileExists(filePath) Then
Set objFile = objFSO.GetFile(filePath).OpenAsTextStream(ForReading)
'Open FilePath For Input As #1
intRow = 0
intNestingLevel = 1
Do Until objFile.AtEndOfStream
intThisLineWhiteSpace = Len(textline) - Len(LTrim(textline))
textline = objFile.ReadLine
oneline = Trim(textline) 'remove leading/trailing spaces
' test if line doesn't start with --- or #
If Left(oneline, 3) <> "---" And Left(oneline, 1) <> "#" Then
dataArray = Split(oneline, ":", 2)
sizeArray = UBound(dataArray, 1) - LBound(dataArray, 1) + 1
' Verification Empty Lines and Split don't occur
If Not Len(oneline) = 0 And Not sizeArray = 0 Then
fIsNestedHeader = False
If sizeArray = 1 And intThisLineWhiteSpace > intLastLineWhiteSpace Then ' HEADER
fIsNestedHeader = True
ElseIf sizeArray = 2 Then ' HEADER: <NULL>
fIsNestedHeader = Len(Trim(dataArray(0))) <> 0 And Len(Trim(dataArray(1))) = 0
End If
If sizeArray = 1 And intThisLineWhiteSpace >= intLastLineWhiteSpace And Len(Trim(dataArray(0))) > 0 Then ' semicolins in a block breaks this parser
'assume we are continuing the data from previous line
intRow = intRow - 1 ' use previous row in the array
Data = Trim(dataArray(0))
'remove leading block annotation | or >
If arryReturn(1, intRow) = "|" Or arryReturn(1, intRow) = ">" Then
If Len(arryReturn(1, intRow)) = 1 Then
arryReturn(1, intRow) = vbNullString
Else
arryReturn(1, intRow) = Right(arryReturn(1, intRow), Len(arryReturn(1, intRow) - 1))
End If
End If
arryReturn(1, intRow) = arryReturn(1, intRow) & vbCrLf & Data
ElseIf fIsNestedHeader Then
'Category/Header
Key = Trim(dataArray(0))
ReDim Preserve arryReturn(1, intRow)
arryReturn(0, intRow) = Key
' calculate nesting level - just kind of works,
' doesn't really map to what's in the YAML as nesting back up is actually dependent on the number of spaces not previous nesting...
intCurrentNestingSpaces = intThisLineWhiteSpace
If intThisLineWhiteSpace = 0 Then
'We are back at level 1
intNestingLevel = 1
Else
If intCurrentNestingSpaces > intLastNestingSpaces Then
intNestingLevel = intNestingLevel + 1
ElseIf intCurrentNestingSpaces < intLastNestingSpaces Then
intNestingLevel = intNestingLevel - 1
'Else 'should be equal so intNestingLevel, stays the same
'intCurrentNestingSpaces = intLastNestingSpaces
End If
End If
arryReturn(1, intRow) = "{level=" & intNestingLevel & "}"
intLastNestingSpaces = intThisLineWhiteSpace
Else
Data = Trim(dataArray(1))
Key = Trim(dataArray(0))
ReDim Preserve arryReturn(1, intRow)
arryReturn(0, intRow) = Key
arryReturn(1, intRow) = Data
End If
intRow = intRow + 1
End If
End If
intLastLineWhiteSpace = Len(textline) - Len(LTrim(textline))
Loop
objFile.Close
Dim arryReturnTemp
'Must build array in Array(column,row) format to be able to append rows in VBScript, now transform to the standard Array(row,column) format
If TransposeArray(arryReturn, arryReturnTemp) Then
ParseYAMLtoArray = arryReturnTemp
Else
Err.Raise vbObjectError + 667, "ParseYAML", "Failed to Transform array"
End If
Else
Err.Raise vbObjectError + 666, "ParseYAML", "Config file not found"
End If
End Function
Public Function TransposeArray(ByRef InputArr, ByRef OutputArr) 'As Variant, ByRef OutputArr As Variant) As Boolean
' Version 1.0.0
' Dependencies: NONE
' Note: The following Public Function has been modified by jeremy.gerdes@navy.mil to conform to VBScipt from:
' http://www.cpearson.com/excel/vbaarrays.htm
' License: Charles H. Pearson. All of the formulas and VBA code are explicitly granted to the Public Domain. You may use the formulas and VBA code on this site for any purpose you see fit without permission from me. This includes inclusion in commercial works and works for hire. By using the formula and code on this site, you agree to hold Charles H. Pearson and Pearson Software Consulting, LLC, free of any liability. The formulas and code are presented as is and the author makes no warranty, express or implied, of their fitness for use. You assume all responsibility for testing and ensuring that the code works properly in your environment
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' TransposeArray
' This transposes a two-dimensional array. It returns True if successful or
' False if an error occurs. InputArr must be two-dimensions. OutputArr must be
' a dynamic array. It will be Erased and resized, so any existing content will
' be destroyed.
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Dim RowNdx ' As Long
Dim ColNdx ' As Long
Dim LB1 ' As Long
Dim LB2 ' As Long
Dim UB1 ' As Long
Dim UB2 ' As Long
'''''''''''''''''''''''''''''''''''
' Ensure InputArr is an array
'''''''''''''''''''''''''''''''''''
If (IsArray(InputArr) = False) Then
TransposeArray = False
Exit Function
End If
'''''''''''''''''''''''''''''''''''''''
' Get the Lower and Upper bounds of
' InputArr.
'''''''''''''''''''''''''''''''''''''''
LB1 = LBound(InputArr, 1)
LB2 = LBound(InputArr, 2)
UB1 = UBound(InputArr, 1)
UB2 = UBound(InputArr, 2)
'''''''''''''''''''''''''''''''''''''''''
' Erase and ReDim OutputArr
'''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
'If it's an array empty it, if not then it's empty
Erase OutputArr
On Error GoTo 0
'In VBS we can't ReDim Array(LowBound To HighBound) all arrays must conform to Lbound = 0
If LB1 <> 0 Or LB2 <> 0 Then
TransposeArray = False
Exit Function
End If
ReDim OutputArr(UB2, UB1)
For RowNdx = LBound(InputArr, 2) To UBound(InputArr, 2)
For ColNdx = LBound(InputArr, 1) To UBound(InputArr, 1)
OutputArr(RowNdx, ColNdx) = InputArr(ColNdx, RowNdx)
Next ' ColNdx
Next ' RowNdx
TransposeArray = True
End Function
YAML 将更好地解析为字典或集合，然后是数组，上述解决方案是为在脚本中运行而创建的，但仍可在 Excel 中运行。
要在 excel 中使用此函数，我们可以将数组直接映射到范围值，如下所示：
Public Sub ToolTestImportYaml(strYamlFilePath As String, rngDestination As Range)
Dim arryYaml As Variant
Dim rngDestinationReturn As Range
arryYaml = ParseYAMLtoArray(strYamlFilePath)
rngDestination.Worksheet.Activate
rngDestination.Activate
Set rngDestinationReturn = rngDestination.Worksheet.Range( _
rngDestination.Address, _
rngDestination.Offset( _
UBound(arryYaml, 1) - LBound(arryYaml, 1), _
UBound(arryYaml, 2) - LBound(arryYaml, 2) _
).Address _
)
'Assign the values to the destination range
rngDestinationReturn.Value = arryYaml
End Sub
并致电：
ToolTestImportYaml ThisWorkbook.path & "\" & "exampleNested.yaml", ActiveSheet.Range("a1")