work with char[]

[Marchello]

Hi All.
I need to extract file's name from a full-path file's name string.
For instance:

char full_name[256] = {'\0'};
char name[256] = {'\0'};

sprintf(full_name, "C:\\folder\\file.ext");

And I need something like this:

ExtractFileName(full_name, name);
// now 'name' must has value "file.ext"

How to write such func ExtractFileName(const char *full, char *dest_name) ?

Sorry for my english.

 

[Bob Hairgrove]

Hi All.
I need to extract file's name from a full-path file's name string.
For instance:

char full_name[256] = {'\0'};
char name[256] = {'\0'};

sprintf(full_name, "C:\\folder\\file.ext");

And I need something like this:

ExtractFileName(full_name, name);
// now 'name' must has value "file.ext"

How to write such func ExtractFileName(const char *full, char *dest_name) ?

Sorry for my english.

std::string has many member funcions which are well suited to this
task, for example rfind() and substr(). I suggest you familiarize
yourself with this class ASAP (and forget about using char* and all
the problems which come with that).

Also, there is the Boost tokenizer library at http://www.boost.org .

 

[deane_gavin]

Hi All.
I need to extract file's name from a full-path file's name string.
For instance:

char full_name[256] = {'\0'};
char name[256] = {'\0'};

This is a C++ newsgroup, so

std::string full_name;
std::string name;

sprintf(full_name, "C:\\folder\\file.ext");

full_name = "C:\\folder\\file.ext";

And I need something like this:

ExtractFileName(full_name, name);
// now 'name' must has value "file.ext"

How to write such func ExtractFileName(const char *full, char *dest_name) ?

Make it

std::string ExtractFileName(const std::string& full)
{
// do the work of extracting just the file name from the whole path
// to do that, look up the find_last_of and substr member functions
of std::string

// return the file name string
}

Gavin Deane

 

[Sumit Rajan]

Hi All.
I need to extract file's name from a full-path file's name string.
For instance:

char full_name[256] = {'\0'};
char name[256] = {'\0'};

sprintf(full_name, "C:\\folder\\file.ext");

And I need something like this:

ExtractFileName(full_name, name);
// now 'name' must has value "file.ext"

How to write such func ExtractFileName(const char *full, char *dest_name)
?

Why don't you use std::string? You could try something like:
std::string ExtractFileName(const std::string& full)

{

std::string::size_type idx = full.find_last_of("\\");

if (idx == std::string::npos)

return full.substr(idx+1);

else

return ""; //do what you need to do to handle this case

}



Regards,

Sumit.

 

[Sumit Rajan]

Hi All.
I need to extract file's name from a full-path file's name string.
For instance:

char full_name[256] = {'\0'};
char name[256] = {'\0'};

sprintf(full_name, "C:\\folder\\file.ext");

And I need something like this:

ExtractFileName(full_name, name);
// now 'name' must has value "file.ext"

How to write such func ExtractFileName(const char *full, char *dest_name)
?

Why don't you use std::string? You could try something like:
std::string ExtractFileName(const std::string& full)

{

std::string::size_type idx = full.find_last_of("\\");

if (idx == std::string::npos)

Typo above. Should be:

if (idx != std::string::npos)

 

[Marchello]

std::string ExtractFileName(const std::string& full)

{
std::string::size_type idx = full.find_last_of("\\");
if (idx != std::string::npos)
return full.substr(idx+1);
else return ""; }

Thanks. This code is work.