Microsoft Small Basic

Program Listing: CPP576

List Program

' Blog Article List 0.1
' Copyright © 2014 Nonki Takahashi. The MIT License.
'
TextWindow.Title = "Blog Article List 0.1"
WQ = Text.GetCharacter(34)
Not = "False=True;True=False;"
site = "http://blogs.msdn.com"
folder = "/b/smallbasic/default.aspx?PageIndex="
maxPage = 1
For page = 1 To maxPage
buf = Network.GetWebPageContents(site + folder + page)
p = 1
eod = "False"
While Not[eod]
param = "tag=a;class=internal-link view-post;"
FindTag()
If tag = "" Then
eod = "True"
Else
GetAttrAndText()
TextWindow.WriteLine("url | " + site + attr["href"])
TextWindow.WriteLine("title | " + txt)
param = "tag=a;class=internal-link view-user-profile;"
FindTag()
If tag = "" Then
eod = "True"
Else
GetAttrAndText()
TextWindow.WriteLine("url | " + site + attr["href"])
TextWindow.WriteLine("name | " + txt)
EndIf
EndIf
TextWindow.WriteLine("")
EndWhile
If page = 1 Then
param = "tag=a;class=last;"
FindTag()
GetAttrAndText()
maxPage = Text.GetSubTextToEnd(attr["href"], Text.GetIndexOf(attr["href"], "=") + 1)
EndIf
EndFor
Sub FindTag
' find tag from html buffer
' param["tag"] - tag name
' param["class"] - class name
' param p - pointer for buffer
' param buf - html buffer
' return tag - found tag
pSave = p
tag = ""
findNext = "True"
While findNext
findNext = "False" ' tag may be not found
pTag = Text.GetIndexOf(Text.GetSubTextToEnd(buf, p), "<" + param["tag"])
If 0 < pTag Then
lTag = Text.GetLength(param["tag"]) + 1
pTag = p + pTag - 1
len = Text.GetIndexOf(Text.GetSubTextToEnd(buf, pTag), "/" + param["tag"] + ">")
If 0 < len Then
findNext = "True" ' tag may have different class
len = len + lTag
attr = "class=" + WQ + param["class"] + WQ
pAttr = pTag + lTag + 1
lAttr = Text.GetLength(attr)
If Text.GetSubText(buf, pAttr, lAttr) = attr Then
tag = Text.GetSubText(buf, pTag, len)
findNext = "False" ' found the tag
EndIf
p = pTag + len
EndIf
EndIf
EndWhile
If tag = "" Then
p = pSave
EndIf
EndSub
Sub GetAttrAndText
' get attributes and text from given tag
' param tag - given tag
' return attr[] - array of attributes in the tag
' return txt - text in the tag
pTag = Text.GetIndexOf(tag, " ") + 1
pEnd = Text.GetIndexOf(tag, ">")
attr = ""
While pTag <= pEnd
pEq = Text.GetIndexOf(Text.GetSubTextToEnd(tag, pTag), "=")
If 0 < pEq Then
pEq = pTag + pEq - 1
If Text.GetSubText(tag, pEq + 1, 1) = WQ Then
pWQ = Text.GetIndexOf(Text.GetSubTextToEnd(tag, pEq + 2), WQ)
If 0 < pWQ Then
pWQ = pEq + 2 + pWQ - 1
attr[Text.GetSubText(tag, pTag, pEq - pTag)] = Text.GetSubText(tag, pEq + 2, pWQ - pEq - 2)
pTag = pWQ + 2
EndIf
EndIf
Else
pTag = pEnd + 1
EndIf
EndWhile
len = Text.GetLength(tag)
txt = ""
While pTag <= len
pL = Text.GetIndexOf(Text.GetSubTextToEnd(tag, pTag), "<")
If pL = 0 Then
txt = Text.Append(txt, Text.GetSubTextToEnd(tag, pTag))
pTag = len + 1
Else
pL = pTag + pL - 1
txt = Text.Append(txt, Text.GetSubText(tag, pTag, pL - pTag))
pR = Text.GetIndexOf(Text.GetSubTextToEnd(tag, pTag), ">")
If 0 < pR Then
pTag = pTag + pR
Else
pTag = len + 1
EndIf
EndIf
EndWhile
EndSub