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#include "option.h"
#if 0
#ifdef USE_BOOST_PYTHON
static ledger::option_t * find_option(const string& name);
#endif
#endif
namespace ledger {
namespace {
xml::xpath_t::op_t * find_option(xml::xpath_t::scope_t * scope,
const string& name)
{
char buf[128];
std::strcpy(buf, "option_");
char * p = &buf[7];
for (const char * q = name.c_str(); *q; q++) {
if (*q == '-')
*p++ = '_';
else
*p++ = *q;
}
*p = '\0';
return scope->lookup(buf);
}
xml::xpath_t::op_t * find_option(xml::xpath_t::scope_t * scope,
const char letter)
{
char buf[9];
std::strcpy(buf, "option_");
buf[7] = letter;
buf[8] = '\0';
return scope->lookup(buf);
}
void process_option(xml::xpath_t::functor_t * opt, xml::xpath_t::scope_t * scope,
const char * arg)
{
#if 0
try {
#endif
std::auto_ptr<xml::xpath_t::scope_t> args;
if (arg) {
args.reset(new xml::xpath_t::scope_t(scope, xml::xpath_t::scope_t::ARGUMENT));
args->args.set_string(arg);
}
value_t temp;
(*opt)(temp, args.get());
#if 0
}
catch (error * err) {
err->context.push_back
(new error_context
(string("While parsing option '--") + opt->long_opt +
"'" + (opt->short_opt != '\0' ?
(string(" (-") + opt->short_opt + "):") : ":")));
throw err;
}
#endif
}
}
bool process_option(const string& name, xml::xpath_t::scope_t * scope,
const char * arg)
{
std::auto_ptr<xml::xpath_t::op_t> opt(find_option(scope, name));
if (opt.get()) {
xml::xpath_t::functor_t * def = opt->functor_obj();
if (def) {
process_option(def, scope, arg);
return true;
}
}
return false;
}
void process_environment(const char ** envp, const string& tag,
xml::xpath_t::scope_t * scope)
{
const char * tag_p = tag.c_str();
unsigned int tag_len = tag.length();
for (const char ** p = envp; *p; p++)
if (! tag_p || std::strncmp(*p, tag_p, tag_len) == 0) {
char buf[128];
char * r = buf;
const char * q;
for (q = *p + tag_len;
*q && *q != '=' && r - buf < 128;
q++)
if (*q == '_')
*r++ = '-';
else
*r++ = std::tolower(*q);
*r = '\0';
if (*q == '=') {
#if 0
try {
#endif
if (! process_option(buf, scope, q + 1))
#if 0
throw new option_error("unknown option")
#endif
;
#if 0
}
catch (error * err) {
err->context.push_back
(new error_context
(string("While parsing environment variable option '") +
*p + "':"));
throw err;
}
#endif
}
}
}
void process_arguments(int argc, char ** argv, const bool anywhere,
xml::xpath_t::scope_t * scope,
std::list<string>& args)
{
for (char ** i = argv; *i; i++) {
if ((*i)[0] != '-') {
if (anywhere) {
args.push_back(*i);
continue;
} else {
for (; *i; i++)
args.push_back(*i);
break;
}
}
// --long-option or -s
again:
if ((*i)[1] == '-') {
if ((*i)[2] == '\0')
break;
char * name = *i + 2;
char * value = NULL;
if (char * p = std::strchr(name, '=')) {
*p++ = '\0';
value = p;
}
std::auto_ptr<xml::xpath_t::op_t> opt(find_option(scope, name));
if (! opt.get())
throw_(option_error, "illegal option --" << name);
xml::xpath_t::functor_t * def = opt->functor_obj();
if (! def)
throw_(option_error, "illegal option --" << name);
if (def->wants_args && value == NULL) {
value = *++i;
if (value == NULL)
throw_(option_error, "missing option argument for --" << name);
}
process_option(def, scope, value);
}
else if ((*i)[1] == '\0') {
throw_(option_error, "illegal option -");
}
else {
std::list<xml::xpath_t::op_t *> option_queue;
int x = 1;
for (char c = (*i)[x]; c != '\0'; x++, c = (*i)[x]) {
xml::xpath_t::op_t * opt = find_option(scope, c);
if (! opt)
throw_(option_error, "illegal option -" << c);
xml::xpath_t::functor_t * def = opt->functor_obj();
if (! def)
throw_(option_error, "illegal option -" << c);
option_queue.push_back(opt);
}
for (std::list<xml::xpath_t::op_t *>::iterator
o = option_queue.begin();
o != option_queue.end();
o++) {
char * value = NULL;
xml::xpath_t::functor_t * def = (*o)->functor_obj();
assert(def);
if (def->wants_args) {
value = *++i;
if (value == NULL)
throw_(option_error, "missing option argument for -" <<
#if 0
def->short_opt
#else
'?'
#endif
);
}
process_option(def, scope, value);
checked_delete(*o);
}
}
next:
;
}
}
} // namespace ledger
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