Parsing in C

[Software2007]

In C not C++,
I have LPTSTR str = "texttext2header";

I would like to delete all tags NOT NAMED xyz How do iterate through without deleting the 'xyz' tag ?

[Chris Meech]

Suggestion. Write a function that searches for the start of the tag and returns the index of the opening <. Write another function that searches for the end of the tag and returns the index of the closing >. Then write a function that 'moves' everything from after the end index to the opening index. :)

Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

[Software2007]

Sorry, don't quite follow.

[Chris Meech]

How about an ASCII picture.

                      Start        End
                      Index       Index
                        |           |

LPTSTR str = "texttext2header";
| |____|
| Stuff to move-+
| |
+--<--< goes here -<--<-+

The first function will return the start index. The second function will return the end index. The third function will move all characters after the end index to the end of the string and place them in start index resulting in

LPTSTR str = "texttext2";

Hope that is clearer. :)

Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

[David Crow]

Iterate over the string, copying characters from source to destination. If you see a tag not named xyz, stop copying until the matching tag is encountered.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous

[Software2007]

This is what I was looking for, I just couldn't get it to work. Could you show a pseudo snippet of code in C? Thanks

[David Crow]

const char *pszSource = "texttext2header";
char szDest[128] = { '\0' };
int x = 0;

while (pszSource && *pszSource != '\0')
{
// you'll need to put some conditions here to detect tags

= *pszSource;

x++;
pszSource++;
}

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous

[CPallini]

Beautiful picture. :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

[Lost User]

Use strchr(). Look for left angle bracket. Read the next char. If it isnt an 'x' then delete everything up to and including the next right angle bracket with a matching tag.

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