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#include "exec.h"
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#include <unordered_map>
#include "dep.h"
#include "eval.h"
#include "log.h"
#include "string_piece.h"
#include "value.h"
namespace {
struct Runner {
Runner()
: echo(true), ignore_error(false) {
}
StringPiece output;
shared_ptr<string> cmd;
bool echo;
bool ignore_error;
//StringPiece shell;
};
} // namespace
class Executor {
public:
explicit Executor(const Vars* vars)
: vars_(vars) {
}
void ExecNode(DepNode* n, DepNode* needed_by) {
if (done_[n->output])
return;
LOG("ExecNode: %s for %s",
n->output.as_string().c_str(),
needed_by ? needed_by->output.as_string().c_str() : "(null)");
for (DepNode* d : n->deps) {
#if 0
if (d.is_order_only && exists(d->output)) {
}
#endif
ExecNode(d, n);
}
vector<Runner*> runners;
CreateRunners(n, &runners);
for (Runner* runner : runners) {
if (runner->echo) {
printf("%s\n", runner->cmd->c_str());
fflush(stdout);
}
system(runner->cmd->c_str());
delete runner;
}
}
void CreateRunners(DepNode* n, vector<Runner*>* runners) {
unique_ptr<Evaluator> ev(new Evaluator(vars_));
for (Value* v : n->cmds) {
shared_ptr<string> cmd = v->Eval(ev.get());
while (true) {
size_t index = cmd->find('\n');
if (index == string::npos)
break;
Runner* runner = new Runner;
runner->output = n->output;
runner->cmd = make_shared<string>(cmd->substr(0, index));
runners->push_back(runner);
cmd = make_shared<string>(cmd->substr(index + 1));
}
Runner* runner = new Runner;
runner->output = n->output;
runner->cmd = cmd;
runners->push_back(runner);
continue;
}
}
private:
const Vars* vars_;
unordered_map<StringPiece, bool> done_;
};
void Exec(const vector<DepNode*>& roots, const Vars* vars) {
unique_ptr<Executor> executor(new Executor(vars));
for (DepNode* root : roots) {
executor->ExecNode(root, NULL);
}
}
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