unix 系统上的 C++ 中的简单 glob？
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Simple glob in C++ on unix system?
提问by Benjamin Crouzier
I want to retrieve all the matching paths following this pattern in a vector<string>:
我想在 a 中检索遵循此模式的所有匹配路径vector<string>：
"/some/path/img*.png"
How can I simply do that ?
我怎么能简单地做到这一点？
回答by Piti Ongmongkolkul
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.
我的大意就是这样。我在 glob 周围创建了一个 stl 包装器，以便它返回字符串向量并处理释放 glob 结果。不是很有效，但这段代码可读性更强，有些人会说更容易使用。
#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;
}
回答by szx
I wrote a simple globlibrary for Windows & Linux (probably works on other *nixes as well) a while ago when I was bored, feel free to use it as you like.
不久前，当我感到无聊时，我为 Windows 和 Linux编写了一个简单的glob库（可能也适用于其他 *nix），请随意使用它。
Example usage:
用法示例：
#include <iostream>
#include "glob.h"
int main(int argc, char **argv) {
glob::Glob glob(argv[1]);
while (glob) {
std::cout << glob.GetFileName() << std::endl;
glob.Next();
}
}
回答by mousomer
I've tried the solutions above on Centos6, and I found out that I needed to change:
我已经在 Centos6 上尝试了上面的解决方案，我发现我需要改变：
int ret = glob(pat.c_str(), 0, globerr, &glob_result);
(where "globerr" is an error handling function)
（其中“globerr”是错误处理函数）
Without the explicit 0, I got "GLOB_NOSPACE" error.
如果没有显式 0，我会收到“GLOB_NOSPACE”错误。
回答by rakesh
Mostlikely http://www.boost.org/doc/libs/release/libs/regex/is the closest you will get. There is a good chance this will be supported in C++11.
很可能http://www.boost.org/doc/libs/release/libs/regex/是您最接近的。这很有可能在 C++11 中得到支持。
