gdb, set breakpoint on all functions in a file

Is there a single command in gdb which can set breakpoints on all the functions in a given file ? I know about rbreak regex which sets breakpoints in matching regular expression functions, but my file doesnt have fixed patterned functions.

In another way, is there a command by which I can set a breakpoint on a filename. Which will mean, whenever control gets inside this file, it should break ?

I personally think this should not be much difficult to implement in gdb, but just wondering if somebody has already done this.

(gdb) rbreak file:.

from http://sourceware.org/gdb/download/onlinedocs/gdb/Set-Breaks.html#Set-Breaks

(gdb) set height 0
(gdb) rbreak file.cpp:.*

worked fine for me.

In my case it was useful to shrink the result set a little bit by specifying a template argument for the functions contained in the file:

(gdb) rbreak file.cpp:.*TemplateClass.*