Kernel string manipulation

For string manipulation, use the util/mongoutils/str.h library.

`str.h`

util/mongoutils/str.h provides string helper functions for each manipulation. Add new functions here rather than lines and lines of code to your app that are not generic.

Typically these functions return a string and take two as parameters : string f(string,string). Thus we wrap them all in a namespace called str.

str::stream() is quite useful:

uassert(12345, str::stream() << "bad ns:" << ns, isok);

`StringData`

    /** A StringData object wraps a 'const string&' or a 'const char*' without
     * copying its contents. The most common usage is as a function argument that
     * takes any of the two forms of strings above. Fundamentally, this class tries
     * go around the fact that string literals in C++ are char[N]'s.
     *
     * Note that the object StringData wraps around must be alive while the StringData
     * is.
    */
    class StringData {

`mongoutils`

MongoUtils has its own namespace. Its code has these basic properties:

are not database specific, rather, true utilities
are cross platform
may require boost headers, but not libs (header-only works with mongoutils)
are clean and easy to use in any c++ project without pulling in lots of other stuff
apache license

Kernel string manipulation

str.h

StringData

mongoutils

Labels

`str.h`

`StringData`

`mongoutils`