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Shell: Add a 'setopt' builtin

This builtin sets (and unsets) boolean flags that alter the behaviour of
the shell.
The only flags added are
- inline_exec_keep_empty_segments: Keep empty segments in the result of
  splitting $(...) by $IFS
- verbose: Announce each command before executing it

It should be noted that the (rather extreme) verbosity of the names is
intentional, and will hopefully be alleviated by the next commit :^)
This commit is contained in:
AnotherTest 2020-06-29 06:22:58 +04:30 committed by Andreas Kling
parent d6de2b5828
commit b8d1edb2a2
5 changed files with 66 additions and 3 deletions

View file

@ -645,6 +645,45 @@ int Shell::builtin_pwd(int, const char**)
return 0;
}
int Shell::builtin_setopt(int argc, const char** argv)
{
if (argc == 1) {
#define __ENUMERATE_SHELL_OPTION(name, default_, description) \
if (options.name) \
fprintf(stderr, #name "\n");
ENUMERATE_SHELL_OPTIONS();
#undef __ENUMERATE_SHELL_OPTION
}
Core::ArgsParser parser;
#define __ENUMERATE_SHELL_OPTION(name, default_, description) \
bool name = false; \
bool not_##name = false; \
parser.add_option(name, "Enable: " description, #name, '\0'); \
parser.add_option(not_##name, "Disable: " description, "no_" #name, '\0');
ENUMERATE_SHELL_OPTIONS();
#undef __ENUMERATE_SHELL_OPTION
if (!parser.parse(argc, const_cast<char**>(argv), false))
return 1;
#define __ENUMERATE_SHELL_OPTION(name, default_, description) \
if (name) \
options.name = true; \
if (not_##name) \
options.name = false;
ENUMERATE_SHELL_OPTIONS();
#undef __ENUMERATE_SHELL_OPTION
return 0;
}
int Shell::builtin_time(int argc, const char** argv)
{
Vector<const char*> args;