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nix-build: Clean up a bit

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This commit is contained in:
Shea Levy 2016-08-31 10:08:00 -04:00
parent 1bffd83e1a
commit 821380c77b
1 changed files with 8 additions and 6 deletions
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14
src/nix-build/nix-build.cc
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@ -16,6 +16,9 @@ using std::stringstream;
extern char ** environ; extern char ** environ;
/* Recreate the effect of the perl shellwords function, breaking up a
* string into arguments like a shell word, including escapes
*/
std::vector<string> shellwords(const string & s) std::vector<string> shellwords(const string & s)
{ {
auto whitespace = std::regex("^(\\s+).*"); auto whitespace = std::regex("^(\\s+).*");
@ -101,15 +104,14 @@ int main(int argc, char ** argv)
if (runEnv && argc > 1 && !std::regex_search(argv[1], std::regex("nix-shell"))) { if (runEnv && argc > 1 && !std::regex_search(argv[1], std::regex("nix-shell"))) {
script = argv[1]; script = argv[1];
if (access(script.c_str(), F_OK) == 0 && access(script.c_str(), X_OK) == 0) { if (access(script.c_str(), F_OK) == 0 && access(script.c_str(), X_OK) == 0) {
auto SCRIPT = std::ifstream(script); auto lines = tokenizeString<Strings>(readFile(script), "\n");
string first; if (std::regex_search(lines.front(), std::regex("^#!"))) {
std::getline(SCRIPT, first); lines.pop_front();
if (std::regex_search(first, std::regex("^#!"))) {
inShebang = true; inShebang = true;
for (int i = 2; i < argc - 1; ++i) for (int i = 2; i < argc - 1; ++i)
savedArgs.push_back(argv[i]); savedArgs.push_back(argv[i]);
args = std::vector<string>{}; args = std::vector<string>{};
for (string line; std::getline(SCRIPT, line);) { for (auto line : lines) {
line = chomp(line); line = chomp(line);
std::smatch match; std::smatch match;
if (std::regex_match(line, match, std::regex("^#!\\s*nix-shell (.*)$"))) if (std::regex_match(line, match, std::regex("^#!\\s*nix-shell (.*)$")))
@ -120,7 +122,7 @@ int main(int argc, char ** argv)
} }
} }
for (auto n = decltype(args)::size_type{0}; n < args.size(); ++n) { for (size_t n = 0; n < args.size(); ++n) {
auto arg = args[n]; auto arg = args[n];
if (arg == "--help") { if (arg == "--help") {