Would it be possible to add a new -v option to ksh93's builtin to return the
version number of a plugin?
Here is a quick prototype I put together to demonstrate the functionality:
Modify ../src/cmd/ksh93/bltins/typeset.c
810c810< register int n, r=0, flag=0;---> register int n, r=0,
flag=0, vflag=0;839a840,842> case 'v':> vflag=1;>
break;858a862,868>> /* display plugin version number */>
if (vflag && *argv) {> r = dllversion(*argv);>
return (r);> }>
and ../src/cmd/ksh93/data/builtins.c
392d391> "[v?Display plugin version number.]"
Add following function to any of the files in ../src/lib/libdll (or create new
source code file)I put it in dllcheck.c.
extern intdllversion(const char* path){ unsigned long v;
void * dll; Dll_plugin_version_f pvf;
if (dll = dllopen(path, RTLD_LAZY|RTLD_GLOBAL|RTLD_PARENT)) {
if (!(pvf = (Dll_plugin_version_f)dlllook(dll, "plugin_version")))
{ dlclose(dll); sfprintf(sfstderr,
"plugin_version() not found\n"); return 0; }
v = (*pvf)(); sfprintf(sfstdout, "%lu" , v);
dlclose(dll); return 1; }
return 0;}
Here is the output for the example hash plugin I detailed in an earlier message.
$ version=$(builtin -v ./libhash.so)$ echo $version20100601$ version=$(builtin
-v libhash.so)$ echo $version
$
- Finnbarr _______________________________________________
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