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I want to retrieve all the matching paths following this pattern in a vector<string>:
"/some/path/img*.png" How can I simply do that ?
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In computer programming, glob (/ɡlɑːb/) patterns specify sets of filenames with wildcard characters. For example, the Unix Bash shell command mv *. txt textfiles/ moves ( mv ) all files with names ending in .
In your C code, the glob() function helps evaluate filename input that includes the global wildcard characters. Here is the man page format for the glob() function, which requires that the glob.
The glob command, short for global, originates in the earliest versions of Bell Labs' Unix.
A glob is a term used to define patterns for matching file and directory names based on wildcards. Globbing is the act of defining one or more glob patterns, and yielding files from either inclusive or exclusive matches.
I have that in my gist. I created a stl wrapper around glob so that it returns vector of string and take care of freeing glob result. Not exactly very efficient but this code is a little more readable and some would say easier to use.
#include <glob.h> // glob(), globfree() #include <string.h> // memset() #include <vector> #include <stdexcept> #include <string> #include <sstream> std::vector<std::string> glob(const std::string& pattern) { using namespace std; // glob struct resides on the stack glob_t glob_result; memset(&glob_result, 0, sizeof(glob_result)); // do the glob operation int return_value = glob(pattern.c_str(), GLOB_TILDE, NULL, &glob_result); if(return_value != 0) { globfree(&glob_result); stringstream ss; ss << "glob() failed with return_value " << return_value << endl; throw std::runtime_error(ss.str()); } // collect all the filenames into a std::list<std::string> vector<string> filenames; for(size_t i = 0; i < glob_result.gl_pathc; ++i) { filenames.push_back(string(glob_result.gl_pathv[i])); } // cleanup globfree(&glob_result); // done return filenames; } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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