style(3p/nix): Reformat project in Google C++ style
Reformatted with:
fd . -e hh -e cc | xargs clang-format -i
This commit is contained in:
Vincent Ambo
parent
65a1aae98c
commit
0f2cf531f7
175 changed files with 32126 additions and 34689 deletions
550
third_party/nix/src/libutil/archive.cc
vendored
550
third_party/nix/src/libutil/archive.cc
vendored
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@ -1,32 +1,31 @@
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#include <cerrno>
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#include <algorithm>
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#include <vector>
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#include <map>
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#include <strings.h> // for strcasecmp
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "archive.hh"
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#include <dirent.h>
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#include <fcntl.h>
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#include "archive.hh"
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#include "util.hh"
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#include <strings.h> // for strcasecmp
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <algorithm>
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#include <cerrno>
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#include <map>
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#include <vector>
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#include "config.hh"
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#include "util.hh"
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namespace nix {
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struct ArchiveSettings : Config
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{
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Setting<bool> useCaseHack{this,
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#if __APPLE__
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true,
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#else
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false,
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#endif
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struct ArchiveSettings : Config {
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Setting<bool> useCaseHack {
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this,
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#if __APPLE__
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true,
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#else
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false,
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#endif
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"use-case-hack",
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"Whether to enable a Darwin-specific hack for dealing with file name collisions."};
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"Whether to enable a Darwin-specific hack for dealing with file name "
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"collisions."
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};
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};
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static ArchiveSettings archiveSettings;
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@ -37,105 +36,105 @@ const std::string narVersionMagic1 = "nix-archive-1";
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static string caseHackSuffix = "~nix~case~hack~";
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PathFilter defaultPathFilter = [](const Path &) { return true; };
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PathFilter defaultPathFilter = [](const Path&) { return true; };
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static void dumpContents(const Path& path, size_t size, Sink& sink) {
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sink << "contents" << size;
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static void dumpContents(const Path & path, size_t size,
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Sink & sink)
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{
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sink << "contents" << size;
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AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
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if (!fd) throw SysError(format("opening file '%1%'") % path);
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AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
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if (!fd) throw SysError(format("opening file '%1%'") % path);
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std::vector<unsigned char> buf(65536);
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size_t left = size;
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std::vector<unsigned char> buf(65536);
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size_t left = size;
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while (left > 0) {
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auto n = std::min(left, buf.size());
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readFull(fd.get(), buf.data(), n);
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left -= n;
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sink(buf.data(), n);
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}
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while (left > 0) {
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auto n = std::min(left, buf.size());
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readFull(fd.get(), buf.data(), n);
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left -= n;
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sink(buf.data(), n);
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}
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writePadding(size, sink);
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writePadding(size, sink);
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}
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static void dump(const Path& path, Sink& sink, PathFilter& filter) {
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checkInterrupt();
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static void dump(const Path & path, Sink & sink, PathFilter & filter)
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{
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checkInterrupt();
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struct stat st;
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if (lstat(path.c_str(), &st))
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throw SysError(format("getting attributes of path '%1%'") % path);
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struct stat st;
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if (lstat(path.c_str(), &st))
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throw SysError(format("getting attributes of path '%1%'") % path);
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sink << "(";
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sink << "(";
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if (S_ISREG(st.st_mode)) {
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sink << "type"
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<< "regular";
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if (st.st_mode & S_IXUSR)
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sink << "executable"
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<< "";
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dumpContents(path, (size_t)st.st_size, sink);
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}
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if (S_ISREG(st.st_mode)) {
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sink << "type" << "regular";
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if (st.st_mode & S_IXUSR)
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sink << "executable" << "";
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dumpContents(path, (size_t) st.st_size, sink);
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}
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else if (S_ISDIR(st.st_mode)) {
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sink << "type"
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<< "directory";
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else if (S_ISDIR(st.st_mode)) {
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sink << "type" << "directory";
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/* If we're on a case-insensitive system like macOS, undo
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the case hack applied by restorePath(). */
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std::map<string, string> unhacked;
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for (auto& i : readDirectory(path))
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if (archiveSettings.useCaseHack) {
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string name(i.name);
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size_t pos = i.name.find(caseHackSuffix);
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if (pos != string::npos) {
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debug(format("removing case hack suffix from '%1%'") %
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(path + "/" + i.name));
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name.erase(pos);
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}
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if (unhacked.find(name) != unhacked.end())
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throw Error(format("file name collision in between '%1%' and '%2%'") %
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(path + "/" + unhacked[name]) % (path + "/" + i.name));
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unhacked[name] = i.name;
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} else
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unhacked[i.name] = i.name;
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/* If we're on a case-insensitive system like macOS, undo
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the case hack applied by restorePath(). */
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std::map<string, string> unhacked;
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for (auto & i : readDirectory(path))
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if (archiveSettings.useCaseHack) {
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string name(i.name);
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size_t pos = i.name.find(caseHackSuffix);
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if (pos != string::npos) {
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debug(format("removing case hack suffix from '%1%'") % (path + "/" + i.name));
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name.erase(pos);
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}
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if (unhacked.find(name) != unhacked.end())
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throw Error(format("file name collision in between '%1%' and '%2%'")
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% (path + "/" + unhacked[name]) % (path + "/" + i.name));
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unhacked[name] = i.name;
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} else
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unhacked[i.name] = i.name;
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for (auto& i : unhacked)
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if (filter(path + "/" + i.first)) {
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sink << "entry"
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<< "("
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<< "name" << i.first << "node";
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dump(path + "/" + i.second, sink, filter);
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sink << ")";
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}
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}
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for (auto & i : unhacked)
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if (filter(path + "/" + i.first)) {
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sink << "entry" << "(" << "name" << i.first << "node";
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dump(path + "/" + i.second, sink, filter);
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sink << ")";
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}
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}
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else if (S_ISLNK(st.st_mode))
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sink << "type"
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<< "symlink"
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<< "target" << readLink(path);
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else if (S_ISLNK(st.st_mode))
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sink << "type" << "symlink" << "target" << readLink(path);
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else
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throw Error(format("file '%1%' has an unsupported type") % path);
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else throw Error(format("file '%1%' has an unsupported type") % path);
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sink << ")";
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sink << ")";
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}
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void dumpPath(const Path & path, Sink & sink, PathFilter & filter)
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{
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sink << narVersionMagic1;
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dump(path, sink, filter);
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void dumpPath(const Path& path, Sink& sink, PathFilter& filter) {
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sink << narVersionMagic1;
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dump(path, sink, filter);
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}
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void dumpString(const std::string & s, Sink & sink)
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{
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sink << narVersionMagic1 << "(" << "type" << "regular" << "contents" << s << ")";
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void dumpString(const std::string& s, Sink& sink) {
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sink << narVersionMagic1 << "("
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<< "type"
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<< "regular"
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<< "contents" << s << ")";
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}
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static SerialisationError badArchive(string s)
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{
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return SerialisationError("bad archive: " + s);
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static SerialisationError badArchive(string s) {
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return SerialisationError("bad archive: " + s);
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}
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#if 0
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static void skipGeneric(Source & source)
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{
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@ -146,233 +145,212 @@ static void skipGeneric(Source & source)
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}
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#endif
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static void parseContents(ParseSink& sink, Source& source, const Path& path) {
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unsigned long long size = readLongLong(source);
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static void parseContents(ParseSink & sink, Source & source, const Path & path)
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{
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unsigned long long size = readLongLong(source);
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sink.preallocateContents(size);
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sink.preallocateContents(size);
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unsigned long long left = size;
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std::vector<unsigned char> buf(65536);
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unsigned long long left = size;
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std::vector<unsigned char> buf(65536);
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while (left) {
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checkInterrupt();
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auto n = buf.size();
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if ((unsigned long long)n > left) n = left;
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source(buf.data(), n);
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sink.receiveContents(buf.data(), n);
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left -= n;
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}
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while (left) {
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checkInterrupt();
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auto n = buf.size();
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if ((unsigned long long)n > left) n = left;
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source(buf.data(), n);
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sink.receiveContents(buf.data(), n);
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left -= n;
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}
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readPadding(size, source);
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readPadding(size, source);
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}
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struct CaseInsensitiveCompare
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{
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bool operator() (const string & a, const string & b) const
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{
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return strcasecmp(a.c_str(), b.c_str()) < 0;
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}
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struct CaseInsensitiveCompare {
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bool operator()(const string& a, const string& b) const {
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return strcasecmp(a.c_str(), b.c_str()) < 0;
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}
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};
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static void parse(ParseSink& sink, Source& source, const Path& path) {
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string s;
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static void parse(ParseSink & sink, Source & source, const Path & path)
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{
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string s;
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s = readString(source);
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if (s != "(") throw badArchive("expected open tag");
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enum { tpUnknown, tpRegular, tpDirectory, tpSymlink } type = tpUnknown;
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std::map<Path, int, CaseInsensitiveCompare> names;
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while (1) {
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checkInterrupt();
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s = readString(source);
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if (s != "(") throw badArchive("expected open tag");
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enum { tpUnknown, tpRegular, tpDirectory, tpSymlink } type = tpUnknown;
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if (s == ")") {
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break;
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}
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std::map<Path, int, CaseInsensitiveCompare> names;
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else if (s == "type") {
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if (type != tpUnknown) throw badArchive("multiple type fields");
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string t = readString(source);
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while (1) {
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if (t == "regular") {
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type = tpRegular;
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sink.createRegularFile(path);
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}
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else if (t == "directory") {
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sink.createDirectory(path);
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type = tpDirectory;
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}
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else if (t == "symlink") {
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type = tpSymlink;
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}
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else
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throw badArchive("unknown file type " + t);
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}
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else if (s == "contents" && type == tpRegular) {
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parseContents(sink, source, path);
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}
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else if (s == "executable" && type == tpRegular) {
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auto s = readString(source);
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if (s != "") throw badArchive("executable marker has non-empty value");
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sink.isExecutable();
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}
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else if (s == "entry" && type == tpDirectory) {
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string name, prevName;
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s = readString(source);
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if (s != "(") throw badArchive("expected open tag");
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while (1) {
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checkInterrupt();
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s = readString(source);
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if (s == ")") {
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break;
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}
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else if (s == "type") {
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if (type != tpUnknown)
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throw badArchive("multiple type fields");
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string t = readString(source);
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if (t == "regular") {
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type = tpRegular;
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sink.createRegularFile(path);
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}
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else if (t == "directory") {
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sink.createDirectory(path);
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type = tpDirectory;
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}
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else if (t == "symlink") {
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type = tpSymlink;
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}
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else throw badArchive("unknown file type " + t);
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}
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else if (s == "contents" && type == tpRegular) {
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parseContents(sink, source, path);
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}
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else if (s == "executable" && type == tpRegular) {
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auto s = readString(source);
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if (s != "") throw badArchive("executable marker has non-empty value");
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sink.isExecutable();
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}
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else if (s == "entry" && type == tpDirectory) {
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string name, prevName;
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s = readString(source);
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if (s != "(") throw badArchive("expected open tag");
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while (1) {
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checkInterrupt();
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s = readString(source);
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if (s == ")") {
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break;
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} else if (s == "name") {
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name = readString(source);
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if (name.empty() || name == "." || name == ".." || name.find('/') != string::npos || name.find((char) 0) != string::npos)
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throw Error(format("NAR contains invalid file name '%1%'") % name);
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if (name <= prevName)
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throw Error("NAR directory is not sorted");
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prevName = name;
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if (archiveSettings.useCaseHack) {
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auto i = names.find(name);
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if (i != names.end()) {
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debug(format("case collision between '%1%' and '%2%'") % i->first % name);
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name += caseHackSuffix;
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name += std::to_string(++i->second);
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} else
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names[name] = 0;
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}
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} else if (s == "node") {
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if (s.empty()) throw badArchive("entry name missing");
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parse(sink, source, path + "/" + name);
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} else
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throw badArchive("unknown field " + s);
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}
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}
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else if (s == "target" && type == tpSymlink) {
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string target = readString(source);
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sink.createSymlink(path, target);
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}
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else
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throw badArchive("unknown field " + s);
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break;
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} else if (s == "name") {
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name = readString(source);
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if (name.empty() || name == "." || name == ".." ||
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name.find('/') != string::npos ||
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name.find((char)0) != string::npos)
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throw Error(format("NAR contains invalid file name '%1%'") % name);
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if (name <= prevName) throw Error("NAR directory is not sorted");
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prevName = name;
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if (archiveSettings.useCaseHack) {
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auto i = names.find(name);
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if (i != names.end()) {
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debug(format("case collision between '%1%' and '%2%'") %
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i->first % name);
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name += caseHackSuffix;
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name += std::to_string(++i->second);
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} else
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names[name] = 0;
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}
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} else if (s == "node") {
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if (s.empty()) throw badArchive("entry name missing");
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parse(sink, source, path + "/" + name);
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} else
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throw badArchive("unknown field " + s);
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}
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}
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else if (s == "target" && type == tpSymlink) {
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string target = readString(source);
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sink.createSymlink(path, target);
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}
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else
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throw badArchive("unknown field " + s);
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}
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}
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void parseDump(ParseSink & sink, Source & source)
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{
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string version;
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try {
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version = readString(source, narVersionMagic1.size());
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} catch (SerialisationError & e) {
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/* This generally means the integer at the start couldn't be
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decoded. Ignore and throw the exception below. */
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}
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if (version != narVersionMagic1)
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throw badArchive("input doesn't look like a Nix archive");
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parse(sink, source, "");
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void parseDump(ParseSink& sink, Source& source) {
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string version;
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try {
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version = readString(source, narVersionMagic1.size());
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} catch (SerialisationError& e) {
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/* This generally means the integer at the start couldn't be
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decoded. Ignore and throw the exception below. */
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}
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if (version != narVersionMagic1)
|
||||
throw badArchive("input doesn't look like a Nix archive");
|
||||
parse(sink, source, "");
|
||||
}
|
||||
|
||||
struct RestoreSink : ParseSink {
|
||||
Path dstPath;
|
||||
AutoCloseFD fd;
|
||||
|
||||
struct RestoreSink : ParseSink
|
||||
{
|
||||
Path dstPath;
|
||||
AutoCloseFD fd;
|
||||
void createDirectory(const Path& path) {
|
||||
Path p = dstPath + path;
|
||||
if (mkdir(p.c_str(), 0777) == -1)
|
||||
throw SysError(format("creating directory '%1%'") % p);
|
||||
};
|
||||
|
||||
void createDirectory(const Path & path)
|
||||
{
|
||||
Path p = dstPath + path;
|
||||
if (mkdir(p.c_str(), 0777) == -1)
|
||||
throw SysError(format("creating directory '%1%'") % p);
|
||||
};
|
||||
void createRegularFile(const Path& path) {
|
||||
Path p = dstPath + path;
|
||||
fd = open(p.c_str(), O_CREAT | O_EXCL | O_WRONLY | O_CLOEXEC, 0666);
|
||||
if (!fd) throw SysError(format("creating file '%1%'") % p);
|
||||
}
|
||||
|
||||
void createRegularFile(const Path & path)
|
||||
{
|
||||
Path p = dstPath + path;
|
||||
fd = open(p.c_str(), O_CREAT | O_EXCL | O_WRONLY | O_CLOEXEC, 0666);
|
||||
if (!fd) throw SysError(format("creating file '%1%'") % p);
|
||||
}
|
||||
void isExecutable() {
|
||||
struct stat st;
|
||||
if (fstat(fd.get(), &st) == -1) throw SysError("fstat");
|
||||
if (fchmod(fd.get(), st.st_mode | (S_IXUSR | S_IXGRP | S_IXOTH)) == -1)
|
||||
throw SysError("fchmod");
|
||||
}
|
||||
|
||||
void isExecutable()
|
||||
{
|
||||
struct stat st;
|
||||
if (fstat(fd.get(), &st) == -1)
|
||||
throw SysError("fstat");
|
||||
if (fchmod(fd.get(), st.st_mode | (S_IXUSR | S_IXGRP | S_IXOTH)) == -1)
|
||||
throw SysError("fchmod");
|
||||
}
|
||||
|
||||
void preallocateContents(unsigned long long len)
|
||||
{
|
||||
void preallocateContents(unsigned long long len) {
|
||||
#if HAVE_POSIX_FALLOCATE
|
||||
if (len) {
|
||||
errno = posix_fallocate(fd.get(), 0, len);
|
||||
/* Note that EINVAL may indicate that the underlying
|
||||
filesystem doesn't support preallocation (e.g. on
|
||||
OpenSolaris). Since preallocation is just an
|
||||
optimisation, ignore it. */
|
||||
if (errno && errno != EINVAL && errno != EOPNOTSUPP && errno != ENOSYS)
|
||||
throw SysError(format("preallocating file of %1% bytes") % len);
|
||||
}
|
||||
if (len) {
|
||||
errno = posix_fallocate(fd.get(), 0, len);
|
||||
/* Note that EINVAL may indicate that the underlying
|
||||
filesystem doesn't support preallocation (e.g. on
|
||||
OpenSolaris). Since preallocation is just an
|
||||
optimisation, ignore it. */
|
||||
if (errno && errno != EINVAL && errno != EOPNOTSUPP && errno != ENOSYS)
|
||||
throw SysError(format("preallocating file of %1% bytes") % len);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
void receiveContents(unsigned char * data, unsigned int len)
|
||||
{
|
||||
writeFull(fd.get(), data, len);
|
||||
}
|
||||
void receiveContents(unsigned char* data, unsigned int len) {
|
||||
writeFull(fd.get(), data, len);
|
||||
}
|
||||
|
||||
void createSymlink(const Path & path, const string & target)
|
||||
{
|
||||
Path p = dstPath + path;
|
||||
nix::createSymlink(target, p);
|
||||
}
|
||||
void createSymlink(const Path& path, const string& target) {
|
||||
Path p = dstPath + path;
|
||||
nix::createSymlink(target, p);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
void restorePath(const Path & path, Source & source)
|
||||
{
|
||||
RestoreSink sink;
|
||||
sink.dstPath = path;
|
||||
parseDump(sink, source);
|
||||
void restorePath(const Path& path, Source& source) {
|
||||
RestoreSink sink;
|
||||
sink.dstPath = path;
|
||||
parseDump(sink, source);
|
||||
}
|
||||
|
||||
void copyNAR(Source& source, Sink& sink) {
|
||||
// FIXME: if 'source' is the output of dumpPath() followed by EOF,
|
||||
// we should just forward all data directly without parsing.
|
||||
|
||||
void copyNAR(Source & source, Sink & sink)
|
||||
{
|
||||
// FIXME: if 'source' is the output of dumpPath() followed by EOF,
|
||||
// we should just forward all data directly without parsing.
|
||||
ParseSink parseSink; /* null sink; just parse the NAR */
|
||||
|
||||
ParseSink parseSink; /* null sink; just parse the NAR */
|
||||
LambdaSource wrapper([&](unsigned char* data, size_t len) {
|
||||
auto n = source.read(data, len);
|
||||
sink(data, n);
|
||||
return n;
|
||||
});
|
||||
|
||||
LambdaSource wrapper([&](unsigned char * data, size_t len) {
|
||||
auto n = source.read(data, len);
|
||||
sink(data, n);
|
||||
return n;
|
||||
});
|
||||
|
||||
parseDump(parseSink, wrapper);
|
||||
parseDump(parseSink, wrapper);
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
} // namespace nix
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue