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decompress(): Use a Source and Sink

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This allows decompression to happen in O(1) memory.
This commit is contained in:
Eelco Dolstra 2018-03-16 16:59:31 +01:00
parent 64441f0551
commit 3e6b194d78
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GPG key ID: 8170B4726D7198DE
6 changed files with 210 additions and 91 deletions
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8
src/libutil/util.hh
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@ -25,6 +25,9 @@
namespace nix {
struct Sink;
struct Source;
/* Return an environment variable. */
string getEnv(const string & key, const string & def = "");
@ -150,6 +153,7 @@ MakeError(EndOfFile, Error)
/* Read a file descriptor until EOF occurs. */
string drainFD(int fd);
void drainFD(int fd, Sink & sink);
/* Automatic cleanup of resources. */
@ -256,6 +260,8 @@ struct RunOptions
bool searchPath = true;
Strings args;
std::experimental::optional<std::string> input;
Source * stdin = nullptr;
Sink * stdout = nullptr;
bool _killStderr = false;
RunOptions(const Path & program, const Strings & args)
@ -266,6 +272,8 @@ struct RunOptions
std::pair<int, std::string> runProgram(const RunOptions & options);
void runProgram2(const RunOptions & options);
class ExecError : public Error
{