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Cleanup SHLVL variable

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This commit is contained in:
ridiculousfish 2012-05-09 03:23:31 -07:00
parent 175249b455
commit eca2100312
1 changed files with 8 additions and 27 deletions
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35
env.cpp
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@ -637,35 +637,16 @@ void env_init()
Set up SHLVL variable
*/
const env_var_t shlvl_str = env_get_string( L"SHLVL" );
const wchar_t *shlvl = shlvl_str.missing() ? NULL : shlvl_str.c_str();
if ( shlvl )
wcstring nshlvl_str = L"1";
if (! shlvl_str.missing())
{
wchar_t *nshlvl, **end_nshlvl;
/* add an extra space for digit dump (9+1=10) */
size_t i = wcslen( shlvl ) + 2 * sizeof(wchar_t);
nshlvl = (wchar_t *)malloc(i);
end_nshlvl = (wchar_t **)calloc( 1, sizeof(nshlvl) );
if ( !nshlvl || !end_nshlvl )
DIE_MEM();
if ( nshlvl && swprintf( nshlvl, i,
L"%ld", wcstoul( shlvl, end_nshlvl, 10 )+1 ) != -1 )
{
env_set( L"SHLVL",
nshlvl,
ENV_GLOBAL | ENV_EXPORT );
}
free( end_nshlvl );
free( nshlvl );
}
else
{
env_set( L"SHLVL",
L"1",
ENV_GLOBAL | ENV_EXPORT );
long shlvl_i = wcstol(shlvl_str.c_str(), NULL, 10);
if (shlvl_i >= 0)
{
nshlvl_str = format_string(L"%ld", 1 + shlvl_i);
}
}
env_set(L"SHLVL", nshlvl_str.c_str(), ENV_GLOBAL | ENV_EXPORT );
/* Set correct defaults for e.g. USER and HOME variables */
env_set_defaults();