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Find and Regex on value in _variant_t
A simple way to convert to/from VARIANT types in C++Converting C++ class to JSONImage Processing: Algorithm Improvement for 'Coca-Cola Can' RecognitionC++ std::string compare with abbreviationsReplacing a 32-bit loop counter with 64-bit introduces crazy performance deviationsRegex - matching everything with number at the endcan I std::find a string in a stringstream?Search only beginning of string in c++ using regexfind multiple matches of overlapping substringsClip random integer to a range of values without using division/modulo
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
I am working with OLE Variants created externally and accessing them through _variant_t.
The Variants can contain text or numbers. I would like to be able to perform a search for arbitrary substrings in a similar fashion as std::string::find. But I am hoping to not have to convert to string values first. I have searched for a similar method for _variant_t but have not found one yet.
What is the best way to accomplish this?
In a similar vein, I'd like to also be able to perform Regex matching on the values stored in the Variants. How can this be done as well?
c++ visual-c++
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
add a comment |
I am working with OLE Variants created externally and accessing them through _variant_t.
The Variants can contain text or numbers. I would like to be able to perform a search for arbitrary substrings in a similar fashion as std::string::find. But I am hoping to not have to convert to string values first. I have searched for a similar method for _variant_t but have not found one yet.
What is the best way to accomplish this?
In a similar vein, I'd like to also be able to perform Regex matching on the values stored in the Variants. How can this be done as well?
c++ visual-c++
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that_variant_thas something like this already so that I don't have to reinvent the wheel.
– Excel Hero
Mar 22 at 6:45
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16
add a comment |
I am working with OLE Variants created externally and accessing them through _variant_t.
The Variants can contain text or numbers. I would like to be able to perform a search for arbitrary substrings in a similar fashion as std::string::find. But I am hoping to not have to convert to string values first. I have searched for a similar method for _variant_t but have not found one yet.
What is the best way to accomplish this?
In a similar vein, I'd like to also be able to perform Regex matching on the values stored in the Variants. How can this be done as well?
c++ visual-c++
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
I am working with OLE Variants created externally and accessing them through _variant_t.
The Variants can contain text or numbers. I would like to be able to perform a search for arbitrary substrings in a similar fashion as std::string::find. But I am hoping to not have to convert to string values first. I have searched for a similar method for _variant_t but have not found one yet.
What is the best way to accomplish this?
In a similar vein, I'd like to also be able to perform Regex matching on the values stored in the Variants. How can this be done as well?
c++ visual-c++
c++ visual-c++
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
asked Mar 22 at 0:47
Excel HeroExcel Hero
10.6k21327
10.6k21327
What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that_variant_thas something like this already so that I don't have to reinvent the wheel.
– Excel Hero
Mar 22 at 6:45
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16
add a comment |
What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that_variant_thas something like this already so that I don't have to reinvent the wheel.
– Excel Hero
Mar 22 at 6:45
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16
What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that
_variant_t has something like this already so that I don't have to reinvent the wheel.– Excel Hero
Mar 22 at 6:45
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that
_variant_t has something like this already so that I don't have to reinvent the wheel.– Excel Hero
Mar 22 at 6:45
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16
add a comment |
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What does it even mean, to regex search on a number?
– Passer By
Mar 22 at 6:25
I mean its string representation. If a Variant held the LONG value of 1230009, for example, the string representation of it would be, "1230009" and perhaps I'd like to see if that representation included, "000". However, the Variant is just as likely to contain text in the form of BSTRs. I am looking for two things: a method to do a normal find() and also a method to do more complicated Regex matching. I am hoping that
_variant_thas something like this already so that I don't have to reinvent the wheel.– Excel Hero
Mar 22 at 6:45
It doesn't. You need to do it manually. You can use VariantChangeType or VariantChangeTypeEx to convert to a BSTR. Afterwords, you can assign the BSTR to a std::wstring and maybe use any Unicode regex funcs, or you can use WideCharToMultiByte() to convert to a std::string (not directly) and then use your regex functions.
– Joseph Willcoxson
Mar 22 at 16:29
@JosephWillcoxson Could you post an example as an answer?
– Excel Hero
Mar 22 at 23:16