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Merge branch 'master' into errors-phase-2

This commit is contained in:
Ben Burdette 2020-05-11 14:35:30 -06:00
commit 59b1f5c701
129 changed files with 4589 additions and 1648 deletions

View file

@ -1,13 +1,15 @@
#pragma once
#pragma once
namespace nix {
/* Some ANSI escape sequences. */
#define ANSI_NORMAL "\e[0m"
#define ANSI_BOLD "\e[1m"
#define ANSI_FAINT "\e[2m"
#define ANSI_ITALIC "\e[3m"
#define ANSI_RED "\e[31;1m"
#define ANSI_GREEN "\e[32;1m"
#define ANSI_YELLOW "\e[33;1m"
#define ANSI_BLUE "\e[34;1m"
namespace nix
{
/* Some ANSI escape sequences. */
#define ANSI_NORMAL "\e[0m"
#define ANSI_BOLD "\e[1m"
#define ANSI_FAINT "\e[2m"
#define ANSI_RED "\e[31;1m"
#define ANSI_GREEN "\e[32;1m"
#define ANSI_YELLOW "\e[33;1m"
#define ANSI_BLUE "\e[34;1m"
}

View file

@ -3,16 +3,14 @@
namespace nix {
Args::FlagMaker Args::mkFlag()
{
return FlagMaker(*this);
}
Args::FlagMaker::~FlagMaker()
void Args::addFlag(Flag && flag_)
{
auto flag = std::make_shared<Flag>(std::move(flag_));
if (flag->handler.arity != ArityAny)
assert(flag->handler.arity == flag->labels.size());
assert(flag->longName != "");
args.longFlags[flag->longName] = flag;
if (flag->shortName) args.shortFlags[flag->shortName] = flag;
longFlags[flag->longName] = flag;
if (flag->shortName) shortFlags[flag->shortName] = flag;
}
void Args::parseCmdline(const Strings & _cmdline)
@ -61,7 +59,7 @@ void Args::parseCmdline(const Strings & _cmdline)
void Args::printHelp(const string & programName, std::ostream & out)
{
std::cout << "Usage: " << programName << " <FLAGS>...";
std::cout << fmt(ANSI_BOLD "Usage:" ANSI_NORMAL " %s " ANSI_ITALIC "FLAGS..." ANSI_NORMAL, programName);
for (auto & exp : expectedArgs) {
std::cout << renderLabels({exp.label});
// FIXME: handle arity > 1
@ -72,11 +70,11 @@ void Args::printHelp(const string & programName, std::ostream & out)
auto s = description();
if (s != "")
std::cout << "\nSummary: " << s << ".\n";
std::cout << "\n" ANSI_BOLD "Summary:" ANSI_NORMAL " " << s << ".\n";
if (longFlags.size()) {
std::cout << "\n";
std::cout << "Flags:\n";
std::cout << ANSI_BOLD "Flags:" ANSI_NORMAL "\n";
printFlags(out);
}
}
@ -101,16 +99,21 @@ bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
auto process = [&](const std::string & name, const Flag & flag) -> bool {
++pos;
std::vector<std::string> args;
for (size_t n = 0 ; n < flag.arity; ++n) {
for (size_t n = 0 ; n < flag.handler.arity; ++n) {
if (pos == end) {
<<<<<<< HEAD
if (flag.arity == ArityAny) break;
throw UsageError("flag '%1%' requires %2% argument(s)",
name,
flag.arity);
=======
if (flag.handler.arity == ArityAny) break;
throw UsageError("flag '%s' requires %d argument(s)", name, flag.handler.arity);
>>>>>>> master
}
args.push_back(*pos++);
}
flag.handler(std::move(args));
flag.handler.fun(std::move(args));
return true;
};
@ -158,17 +161,18 @@ bool Args::processArgs(const Strings & args, bool finish)
return res;
}
Args::FlagMaker & Args::FlagMaker::mkHashTypeFlag(HashType * ht)
Args::Flag Args::Flag::mkHashTypeFlag(std::string && longName, HashType * ht)
{
arity(1);
label("type");
description("hash algorithm ('md5', 'sha1', 'sha256', or 'sha512')");
handler([ht](std::string s) {
*ht = parseHashType(s);
if (*ht == htUnknown)
throw UsageError("unknown hash type '%1%'", s);
});
return *this;
return Flag {
.longName = std::move(longName),
.description = "hash algorithm ('md5', 'sha1', 'sha256', or 'sha512')",
.labels = {"hash-algo"},
.handler = {[ht](std::string s) {
*ht = parseHashType(s);
if (*ht == htUnknown)
throw UsageError("unknown hash type '%1%'", s);
}}
};
}
Strings argvToStrings(int argc, char * * argv)
@ -184,7 +188,7 @@ std::string renderLabels(const Strings & labels)
std::string res;
for (auto label : labels) {
for (auto & c : label) c = std::toupper(c);
res += " <" + label + ">";
res += " " ANSI_ITALIC + label + ANSI_NORMAL;
}
return res;
}
@ -193,10 +197,10 @@ void printTable(std::ostream & out, const Table2 & table)
{
size_t max = 0;
for (auto & row : table)
max = std::max(max, row.first.size());
max = std::max(max, filterANSIEscapes(row.first, true).size());
for (auto & row : table) {
out << " " << row.first
<< std::string(max - row.first.size() + 2, ' ')
<< std::string(max - filterANSIEscapes(row.first, true).size() + 2, ' ')
<< row.second << "\n";
}
}
@ -207,8 +211,7 @@ void Command::printHelp(const string & programName, std::ostream & out)
auto exs = examples();
if (!exs.empty()) {
out << "\n";
out << "Examples:\n";
out << "\n" ANSI_BOLD "Examples:" ANSI_NORMAL "\n";
for (auto & ex : exs)
out << "\n"
<< " " << ex.description << "\n" // FIXME: wrap
@ -224,49 +227,55 @@ MultiCommand::MultiCommand(const Commands & commands)
auto i = commands.find(ss[0]);
if (i == commands.end())
throw UsageError("'%s' is not a recognised command", ss[0]);
command = i->second();
command->_name = ss[0];
command = {ss[0], i->second()};
}});
categories[Command::catDefault] = "Available commands";
}
void MultiCommand::printHelp(const string & programName, std::ostream & out)
{
if (command) {
command->printHelp(programName + " " + command->name(), out);
command->second->printHelp(programName + " " + command->first, out);
return;
}
out << "Usage: " << programName << " <COMMAND> <FLAGS>... <ARGS>...\n";
out << fmt(ANSI_BOLD "Usage:" ANSI_NORMAL " %s " ANSI_ITALIC "COMMAND FLAGS... ARGS..." ANSI_NORMAL "\n", programName);
out << "\n";
out << "Common flags:\n";
out << "\n" ANSI_BOLD "Common flags:" ANSI_NORMAL "\n";
printFlags(out);
out << "\n";
out << "Available commands:\n";
std::map<Command::Category, std::map<std::string, ref<Command>>> commandsByCategory;
Table2 table;
for (auto & i : commands) {
auto command = i.second();
command->_name = i.first;
auto descr = command->description();
if (!descr.empty())
table.push_back(std::make_pair(command->name(), descr));
for (auto & [name, commandFun] : commands) {
auto command = commandFun();
commandsByCategory[command->category()].insert_or_assign(name, command);
}
for (auto & [category, commands] : commandsByCategory) {
out << fmt("\n" ANSI_BOLD "%s:" ANSI_NORMAL "\n", categories[category]);
Table2 table;
for (auto & [name, command] : commands) {
auto descr = command->description();
if (!descr.empty())
table.push_back(std::make_pair(name, descr));
}
printTable(out, table);
}
printTable(out, table);
}
bool MultiCommand::processFlag(Strings::iterator & pos, Strings::iterator end)
{
if (Args::processFlag(pos, end)) return true;
if (command && command->processFlag(pos, end)) return true;
if (command && command->second->processFlag(pos, end)) return true;
return false;
}
bool MultiCommand::processArgs(const Strings & args, bool finish)
{
if (command)
return command->processArgs(args, finish);
return command->second->processArgs(args, finish);
else
return Args::processArgs(args, finish);
}

View file

@ -32,13 +32,59 @@ protected:
struct Flag
{
typedef std::shared_ptr<Flag> ptr;
struct Handler
{
std::function<void(std::vector<std::string>)> fun;
size_t arity;
Handler() {}
Handler(std::function<void(std::vector<std::string>)> && fun)
: fun(std::move(fun))
, arity(ArityAny)
{ }
Handler(std::function<void()> && handler)
: fun([handler{std::move(handler)}](std::vector<std::string>) { handler(); })
, arity(0)
{ }
Handler(std::function<void(std::string)> && handler)
: fun([handler{std::move(handler)}](std::vector<std::string> ss) {
handler(std::move(ss[0]));
})
, arity(1)
{ }
Handler(std::function<void(std::string, std::string)> && handler)
: fun([handler{std::move(handler)}](std::vector<std::string> ss) {
handler(std::move(ss[0]), std::move(ss[1]));
})
, arity(2)
{ }
template<class T>
Handler(T * dest)
: fun([=](std::vector<std::string> ss) { *dest = ss[0]; })
, arity(1)
{ }
template<class T>
Handler(T * dest, const T & val)
: fun([=](std::vector<std::string> ss) { *dest = val; })
, arity(0)
{ }
};
std::string longName;
char shortName = 0;
std::string description;
Strings labels;
size_t arity = 0;
std::function<void(std::vector<std::string>)> handler;
std::string category;
Strings labels;
Handler handler;
static Flag mkHashTypeFlag(std::string && longName, HashType * ht);
};
std::map<std::string, Flag::ptr> longFlags;
@ -65,49 +111,7 @@ protected:
public:
class FlagMaker
{
Args & args;
Flag::ptr flag;
friend class Args;
FlagMaker(Args & args) : args(args), flag(std::make_shared<Flag>()) { }
public:
~FlagMaker();
FlagMaker & longName(const std::string & s) { flag->longName = s; return *this; }
FlagMaker & shortName(char s) { flag->shortName = s; return *this; }
FlagMaker & description(const std::string & s) { flag->description = s; return *this; }
FlagMaker & label(const std::string & l) { flag->arity = 1; flag->labels = {l}; return *this; }
FlagMaker & labels(const Strings & ls) { flag->arity = ls.size(); flag->labels = ls; return *this; }
FlagMaker & arity(size_t arity) { flag->arity = arity; return *this; }
FlagMaker & handler(std::function<void(std::vector<std::string>)> handler) { flag->handler = handler; return *this; }
FlagMaker & handler(std::function<void()> handler) { flag->handler = [handler](std::vector<std::string>) { handler(); }; return *this; }
FlagMaker & handler(std::function<void(std::string)> handler) {
flag->arity = 1;
flag->handler = [handler](std::vector<std::string> ss) { handler(std::move(ss[0])); };
return *this;
}
FlagMaker & category(const std::string & s) { flag->category = s; return *this; }
template<class T>
FlagMaker & dest(T * dest)
{
flag->arity = 1;
flag->handler = [=](std::vector<std::string> ss) { *dest = ss[0]; };
return *this;
}
template<class T>
FlagMaker & set(T * dest, const T & val)
{
flag->arity = 0;
flag->handler = [=](std::vector<std::string> ss) { *dest = val; };
return *this;
}
FlagMaker & mkHashTypeFlag(HashType * ht);
};
FlagMaker mkFlag();
void addFlag(Flag && flag);
/* Helper functions for constructing flags / positional
arguments. */
@ -116,13 +120,13 @@ public:
const std::string & label, const std::string & description,
std::function<void(std::string)> fun)
{
mkFlag()
.shortName(shortName)
.longName(longName)
.labels({label})
.description(description)
.arity(1)
.handler([=](std::vector<std::string> ss) { fun(ss[0]); });
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.labels = {label},
.handler = {[=](std::string s) { fun(s); }}
});
}
void mkFlag(char shortName, const std::string & name,
@ -135,11 +139,12 @@ public:
void mkFlag(char shortName, const std::string & longName, const std::string & description,
T * dest, const T & value)
{
mkFlag()
.shortName(shortName)
.longName(longName)
.description(description)
.handler([=](std::vector<std::string> ss) { *dest = value; });
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.handler = {[=]() { *dest = value; }}
});
}
template<class I>
@ -155,18 +160,18 @@ public:
void mkFlag(char shortName, const std::string & longName,
const std::string & description, std::function<void(I)> fun)
{
mkFlag()
.shortName(shortName)
.longName(longName)
.labels({"N"})
.description(description)
.arity(1)
.handler([=](std::vector<std::string> ss) {
addFlag({
.longName = longName,
.shortName = shortName,
.description = description,
.labels = {"N"},
.handler = {[=](std::string s) {
I n;
if (!string2Int(ss[0], n))
if (!string2Int(s, n))
throw UsageError("flag '--%s' requires a integer argument", longName);
fun(n);
});
}}
});
}
/* Expect a string argument. */
@ -192,17 +197,10 @@ public:
run() method. */
struct Command : virtual Args
{
private:
std::string _name;
friend class MultiCommand;
public:
virtual ~Command() { }
std::string name() { return _name; }
virtual void prepare() { };
virtual void run() = 0;
@ -216,6 +214,12 @@ public:
virtual Examples examples() { return Examples(); }
typedef int Category;
static constexpr Category catDefault = 0;
virtual Category category() { return catDefault; }
void printHelp(const string & programName, std::ostream & out) override;
};
@ -228,7 +232,10 @@ class MultiCommand : virtual Args
public:
Commands commands;
std::shared_ptr<Command> command;
std::map<Command::Category, std::string> categories;
// Selected command, if any.
std::optional<std::pair<std::string, ref<Command>>> command;
MultiCommand(const Commands & commands);

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@ -177,12 +177,13 @@ void BaseSetting<T>::toJSON(JSONPlaceholder & out)
template<typename T>
void BaseSetting<T>::convertToArg(Args & args, const std::string & category)
{
args.mkFlag()
.longName(name)
.description(description)
.arity(1)
.handler([=](std::vector<std::string> ss) { overriden = true; set(ss[0]); })
.category(category);
args.addFlag({
.longName = name,
.description = description,
.category = category,
.labels = {"value"},
.handler = {[=](std::string s) { overriden = true; set(s); }},
});
}
template<> void BaseSetting<std::string>::set(const std::string & str)
@ -227,16 +228,18 @@ template<> std::string BaseSetting<bool>::to_string() const
template<> void BaseSetting<bool>::convertToArg(Args & args, const std::string & category)
{
args.mkFlag()
.longName(name)
.description(description)
.handler([=](std::vector<std::string> ss) { override(true); })
.category(category);
args.mkFlag()
.longName("no-" + name)
.description(description)
.handler([=](std::vector<std::string> ss) { override(false); })
.category(category);
args.addFlag({
.longName = name,
.description = description,
.category = category,
.handler = {[=]() { override(true); }}
});
args.addFlag({
.longName = "no-" + name,
.description = description,
.category = category,
.handler = {[=]() { override(false); }}
});
}
template<> void BaseSetting<Strings>::set(const std::string & str)

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@ -3,7 +3,7 @@
#include <atomic>
#include <nlohmann/json.hpp>
#include <sstream>
#include <iostream>
namespace nix {
@ -25,6 +25,11 @@ void Logger::warn(const std::string & msg)
log(lvlWarn, ANSI_YELLOW "warning:" ANSI_NORMAL " " + msg);
}
void Logger::writeToStdout(std::string_view s)
{
std::cout << s << "\n";
}
class SimpleLogger : public Logger
{
public:
@ -243,7 +248,7 @@ bool handleJSONLogMessage(const std::string & msg,
if (action == "start") {
auto type = (ActivityType) json["type"];
if (trusted || type == actDownload)
if (trusted || type == actFileTransfer)
activities.emplace(std::piecewise_construct,
std::forward_as_tuple(json["id"]),
std::forward_as_tuple(*logger, (Verbosity) json["level"], type,

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@ -7,7 +7,7 @@ namespace nix {
typedef enum {
actUnknown = 0,
actCopyPath = 100,
actDownload = 101,
actFileTransfer = 101,
actRealise = 102,
actCopyPaths = 103,
actBuilds = 104,
@ -76,6 +76,16 @@ public:
virtual void stopActivity(ActivityId act) { };
virtual void result(ActivityId act, ResultType type, const Fields & fields) { };
virtual void writeToStdout(std::string_view s);
template<typename... Args>
inline void stdout(const std::string & fs, const Args & ... args)
{
boost::format f(fs);
formatHelper(f, args...);
writeToStdout(f.str());
}
};
ActivityId getCurActivity();

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@ -148,6 +148,9 @@ struct StringSink : Sink
{
ref<std::string> s;
StringSink() : s(make_ref<std::string>()) { };
explicit StringSink(const size_t reservedSize) : s(make_ref<std::string>()) {
s->reserve(reservedSize);
};
StringSink(ref<std::string> s) : s(s) { };
void operator () (const unsigned char * data, size_t len) override;
};

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@ -0,0 +1,15 @@
check: libutil-tests_RUN
programs += libutil-tests
libutil-tests_DIR := $(d)
libutil-tests_INSTALL_DIR :=
libutil-tests_SOURCES := $(wildcard $(d)/*.cc)
libutil-tests_CXXFLAGS += -I src/libutil
libutil-tests_LIBS = libutil
libutil-tests_LDFLAGS := $(GTEST_LIBS)

585
src/libutil/tests/tests.cc Normal file
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@ -0,0 +1,585 @@
#include "util.hh"
#include "types.hh"
#include <gtest/gtest.h>
namespace nix {
/* ----------------------------------------------------------------------------
* absPath
* --------------------------------------------------------------------------*/
TEST(absPath, doesntChangeRoot) {
auto p = absPath("/");
ASSERT_EQ(p, "/");
}
TEST(absPath, turnsEmptyPathIntoCWD) {
char cwd[PATH_MAX+1];
auto p = absPath("");
ASSERT_EQ(p, getcwd((char*)&cwd, PATH_MAX));
}
TEST(absPath, usesOptionalBasePathWhenGiven) {
char _cwd[PATH_MAX+1];
char* cwd = getcwd((char*)&_cwd, PATH_MAX);
auto p = absPath("", cwd);
ASSERT_EQ(p, cwd);
}
TEST(absPath, isIdempotent) {
char _cwd[PATH_MAX+1];
char* cwd = getcwd((char*)&_cwd, PATH_MAX);
auto p1 = absPath(cwd);
auto p2 = absPath(p1);
ASSERT_EQ(p1, p2);
}
TEST(absPath, pathIsCanonicalised) {
auto path = "/some/path/with/trailing/dot/.";
auto p1 = absPath(path);
auto p2 = absPath(p1);
ASSERT_EQ(p1, "/some/path/with/trailing/dot");
ASSERT_EQ(p1, p2);
}
/* ----------------------------------------------------------------------------
* canonPath
* --------------------------------------------------------------------------*/
TEST(canonPath, removesTrailingSlashes) {
auto path = "/this/is/a/path//";
auto p = canonPath(path);
ASSERT_EQ(p, "/this/is/a/path");
}
TEST(canonPath, removesDots) {
auto path = "/this/./is/a/path/./";
auto p = canonPath(path);
ASSERT_EQ(p, "/this/is/a/path");
}
TEST(canonPath, removesDots2) {
auto path = "/this/a/../is/a////path/foo/..";
auto p = canonPath(path);
ASSERT_EQ(p, "/this/is/a/path");
}
TEST(canonPath, requiresAbsolutePath) {
ASSERT_ANY_THROW(canonPath("."));
ASSERT_ANY_THROW(canonPath(".."));
ASSERT_ANY_THROW(canonPath("../"));
ASSERT_DEATH({ canonPath(""); }, "path != \"\"");
}
/* ----------------------------------------------------------------------------
* dirOf
* --------------------------------------------------------------------------*/
TEST(dirOf, returnsEmptyStringForRoot) {
auto p = dirOf("/");
ASSERT_EQ(p, "/");
}
TEST(dirOf, returnsFirstPathComponent) {
auto p1 = dirOf("/dir/");
ASSERT_EQ(p1, "/dir");
auto p2 = dirOf("/dir");
ASSERT_EQ(p2, "/");
auto p3 = dirOf("/dir/..");
ASSERT_EQ(p3, "/dir");
auto p4 = dirOf("/dir/../");
ASSERT_EQ(p4, "/dir/..");
}
/* ----------------------------------------------------------------------------
* baseNameOf
* --------------------------------------------------------------------------*/
TEST(baseNameOf, emptyPath) {
auto p1 = baseNameOf("");
ASSERT_EQ(p1, "");
}
TEST(baseNameOf, pathOnRoot) {
auto p1 = baseNameOf("/dir");
ASSERT_EQ(p1, "dir");
}
TEST(baseNameOf, relativePath) {
auto p1 = baseNameOf("dir/foo");
ASSERT_EQ(p1, "foo");
}
TEST(baseNameOf, pathWithTrailingSlashRoot) {
auto p1 = baseNameOf("/");
ASSERT_EQ(p1, "");
}
TEST(baseNameOf, trailingSlash) {
auto p1 = baseNameOf("/dir/");
ASSERT_EQ(p1, "dir");
}
/* ----------------------------------------------------------------------------
* isInDir
* --------------------------------------------------------------------------*/
TEST(isInDir, trivialCase) {
auto p1 = isInDir("/foo/bar", "/foo");
ASSERT_EQ(p1, true);
}
TEST(isInDir, notInDir) {
auto p1 = isInDir("/zes/foo/bar", "/foo");
ASSERT_EQ(p1, false);
}
// XXX: hm, bug or feature? :) Looking at the implementation
// this might be problematic.
TEST(isInDir, emptyDir) {
auto p1 = isInDir("/zes/foo/bar", "");
ASSERT_EQ(p1, true);
}
/* ----------------------------------------------------------------------------
* isDirOrInDir
* --------------------------------------------------------------------------*/
TEST(isDirOrInDir, trueForSameDirectory) {
ASSERT_EQ(isDirOrInDir("/nix", "/nix"), true);
ASSERT_EQ(isDirOrInDir("/", "/"), true);
}
TEST(isDirOrInDir, trueForEmptyPaths) {
ASSERT_EQ(isDirOrInDir("", ""), true);
}
TEST(isDirOrInDir, falseForDisjunctPaths) {
ASSERT_EQ(isDirOrInDir("/foo", "/bar"), false);
}
TEST(isDirOrInDir, relativePaths) {
ASSERT_EQ(isDirOrInDir("/foo/..", "/foo"), true);
}
// XXX: while it is possible to use "." or ".." in the
// first argument this doesn't seem to work in the second.
TEST(isDirOrInDir, DISABLED_shouldWork) {
ASSERT_EQ(isDirOrInDir("/foo/..", "/foo/."), true);
}
/* ----------------------------------------------------------------------------
* pathExists
* --------------------------------------------------------------------------*/
TEST(pathExists, rootExists) {
ASSERT_TRUE(pathExists("/"));
}
TEST(pathExists, cwdExists) {
ASSERT_TRUE(pathExists("."));
}
TEST(pathExists, bogusPathDoesNotExist) {
ASSERT_FALSE(pathExists("/home/schnitzel/darmstadt/pommes"));
}
/* ----------------------------------------------------------------------------
* concatStringsSep
* --------------------------------------------------------------------------*/
TEST(concatStringsSep, buildCommaSeparatedString) {
Strings strings;
strings.push_back("this");
strings.push_back("is");
strings.push_back("great");
ASSERT_EQ(concatStringsSep(",", strings), "this,is,great");
}
TEST(concatStringsSep, buildStringWithEmptySeparator) {
Strings strings;
strings.push_back("this");
strings.push_back("is");
strings.push_back("great");
ASSERT_EQ(concatStringsSep("", strings), "thisisgreat");
}
TEST(concatStringsSep, buildSingleString) {
Strings strings;
strings.push_back("this");
ASSERT_EQ(concatStringsSep(",", strings), "this");
}
/* ----------------------------------------------------------------------------
* hasPrefix
* --------------------------------------------------------------------------*/
TEST(hasPrefix, emptyStringHasNoPrefix) {
ASSERT_FALSE(hasPrefix("", "foo"));
}
TEST(hasPrefix, emptyStringIsAlwaysPrefix) {
ASSERT_TRUE(hasPrefix("foo", ""));
ASSERT_TRUE(hasPrefix("jshjkfhsadf", ""));
}
TEST(hasPrefix, trivialCase) {
ASSERT_TRUE(hasPrefix("foobar", "foo"));
}
/* ----------------------------------------------------------------------------
* hasSuffix
* --------------------------------------------------------------------------*/
TEST(hasSuffix, emptyStringHasNoSuffix) {
ASSERT_FALSE(hasSuffix("", "foo"));
}
TEST(hasSuffix, trivialCase) {
ASSERT_TRUE(hasSuffix("foo", "foo"));
ASSERT_TRUE(hasSuffix("foobar", "bar"));
}
/* ----------------------------------------------------------------------------
* base64Encode
* --------------------------------------------------------------------------*/
TEST(base64Encode, emptyString) {
ASSERT_EQ(base64Encode(""), "");
}
TEST(base64Encode, encodesAString) {
ASSERT_EQ(base64Encode("quod erat demonstrandum"), "cXVvZCBlcmF0IGRlbW9uc3RyYW5kdW0=");
}
TEST(base64Encode, encodeAndDecode) {
auto s = "quod erat demonstrandum";
auto encoded = base64Encode(s);
auto decoded = base64Decode(encoded);
ASSERT_EQ(decoded, s);
}
/* ----------------------------------------------------------------------------
* base64Decode
* --------------------------------------------------------------------------*/
TEST(base64Decode, emptyString) {
ASSERT_EQ(base64Decode(""), "");
}
TEST(base64Decode, decodeAString) {
ASSERT_EQ(base64Decode("cXVvZCBlcmF0IGRlbW9uc3RyYW5kdW0="), "quod erat demonstrandum");
}
/* ----------------------------------------------------------------------------
* toLower
* --------------------------------------------------------------------------*/
TEST(toLower, emptyString) {
ASSERT_EQ(toLower(""), "");
}
TEST(toLower, nonLetters) {
auto s = "!@(*$#)(@#=\\234_";
ASSERT_EQ(toLower(s), s);
}
// std::tolower() doesn't handle unicode characters. In the context of
// store paths this isn't relevant but doesn't hurt to record this behavior
// here.
TEST(toLower, umlauts) {
auto s = "ÄÖÜ";
ASSERT_EQ(toLower(s), "ÄÖÜ");
}
/* ----------------------------------------------------------------------------
* string2Float
* --------------------------------------------------------------------------*/
TEST(string2Float, emptyString) {
double n;
ASSERT_EQ(string2Float("", n), false);
}
TEST(string2Float, trivialConversions) {
double n;
ASSERT_EQ(string2Float("1.0", n), true);
ASSERT_EQ(n, 1.0);
ASSERT_EQ(string2Float("0.0", n), true);
ASSERT_EQ(n, 0.0);
ASSERT_EQ(string2Float("-100.25", n), true);
ASSERT_EQ(n, (-100.25));
}
/* ----------------------------------------------------------------------------
* string2Int
* --------------------------------------------------------------------------*/
TEST(string2Int, emptyString) {
double n;
ASSERT_EQ(string2Int("", n), false);
}
TEST(string2Int, trivialConversions) {
double n;
ASSERT_EQ(string2Int("1", n), true);
ASSERT_EQ(n, 1);
ASSERT_EQ(string2Int("0", n), true);
ASSERT_EQ(n, 0);
ASSERT_EQ(string2Int("-100", n), true);
ASSERT_EQ(n, (-100));
}
/* ----------------------------------------------------------------------------
* statusOk
* --------------------------------------------------------------------------*/
TEST(statusOk, zeroIsOk) {
ASSERT_EQ(statusOk(0), true);
ASSERT_EQ(statusOk(1), false);
}
/* ----------------------------------------------------------------------------
* rewriteStrings
* --------------------------------------------------------------------------*/
TEST(rewriteStrings, emptyString) {
StringMap rewrites;
rewrites["this"] = "that";
ASSERT_EQ(rewriteStrings("", rewrites), "");
}
TEST(rewriteStrings, emptyRewrites) {
StringMap rewrites;
ASSERT_EQ(rewriteStrings("this and that", rewrites), "this and that");
}
TEST(rewriteStrings, successfulRewrite) {
StringMap rewrites;
rewrites["this"] = "that";
ASSERT_EQ(rewriteStrings("this and that", rewrites), "that and that");
}
TEST(rewriteStrings, doesntOccur) {
StringMap rewrites;
rewrites["foo"] = "bar";
ASSERT_EQ(rewriteStrings("this and that", rewrites), "this and that");
}
/* ----------------------------------------------------------------------------
* replaceStrings
* --------------------------------------------------------------------------*/
TEST(replaceStrings, emptyString) {
ASSERT_EQ(replaceStrings("", "this", "that"), "");
ASSERT_EQ(replaceStrings("this and that", "", ""), "this and that");
}
TEST(replaceStrings, successfulReplace) {
ASSERT_EQ(replaceStrings("this and that", "this", "that"), "that and that");
}
TEST(replaceStrings, doesntOccur) {
ASSERT_EQ(replaceStrings("this and that", "foo", "bar"), "this and that");
}
/* ----------------------------------------------------------------------------
* trim
* --------------------------------------------------------------------------*/
TEST(trim, emptyString) {
ASSERT_EQ(trim(""), "");
}
TEST(trim, removesWhitespace) {
ASSERT_EQ(trim("foo"), "foo");
ASSERT_EQ(trim(" foo "), "foo");
ASSERT_EQ(trim(" foo bar baz"), "foo bar baz");
ASSERT_EQ(trim(" \t foo bar baz\n"), "foo bar baz");
}
/* ----------------------------------------------------------------------------
* chomp
* --------------------------------------------------------------------------*/
TEST(chomp, emptyString) {
ASSERT_EQ(chomp(""), "");
}
TEST(chomp, removesWhitespace) {
ASSERT_EQ(chomp("foo"), "foo");
ASSERT_EQ(chomp("foo "), "foo");
ASSERT_EQ(chomp(" foo "), " foo");
ASSERT_EQ(chomp(" foo bar baz "), " foo bar baz");
ASSERT_EQ(chomp("\t foo bar baz\n"), "\t foo bar baz");
}
/* ----------------------------------------------------------------------------
* quoteStrings
* --------------------------------------------------------------------------*/
TEST(quoteStrings, empty) {
Strings s = { };
Strings expected = { };
ASSERT_EQ(quoteStrings(s), expected);
}
TEST(quoteStrings, emptyStrings) {
Strings s = { "", "", "" };
Strings expected = { "''", "''", "''" };
ASSERT_EQ(quoteStrings(s), expected);
}
TEST(quoteStrings, trivialQuote) {
Strings s = { "foo", "bar", "baz" };
Strings expected = { "'foo'", "'bar'", "'baz'" };
ASSERT_EQ(quoteStrings(s), expected);
}
TEST(quoteStrings, quotedStrings) {
Strings s = { "'foo'", "'bar'", "'baz'" };
Strings expected = { "''foo''", "''bar''", "''baz''" };
ASSERT_EQ(quoteStrings(s), expected);
}
/* ----------------------------------------------------------------------------
* tokenizeString
* --------------------------------------------------------------------------*/
TEST(tokenizeString, empty) {
Strings expected = { };
ASSERT_EQ(tokenizeString<Strings>(""), expected);
}
TEST(tokenizeString, tokenizeSpacesWithDefaults) {
auto s = "foo bar baz";
Strings expected = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s), expected);
}
TEST(tokenizeString, tokenizeTabsWithDefaults) {
auto s = "foo\tbar\tbaz";
Strings expected = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s), expected);
}
TEST(tokenizeString, tokenizeTabsSpacesWithDefaults) {
auto s = "foo\t bar\t baz";
Strings expected = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s), expected);
}
TEST(tokenizeString, tokenizeTabsSpacesNewlineWithDefaults) {
auto s = "foo\t\n bar\t\n baz";
Strings expected = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s), expected);
}
TEST(tokenizeString, tokenizeTabsSpacesNewlineRetWithDefaults) {
auto s = "foo\t\n\r bar\t\n\r baz";
Strings expected = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s), expected);
auto s2 = "foo \t\n\r bar \t\n\r baz";
Strings expected2 = { "foo", "bar", "baz" };
ASSERT_EQ(tokenizeString<Strings>(s2), expected2);
}
TEST(tokenizeString, tokenizeWithCustomSep) {
auto s = "foo\n,bar\n,baz\n";
Strings expected = { "foo\n", "bar\n", "baz\n" };
ASSERT_EQ(tokenizeString<Strings>(s, ","), expected);
}
/* ----------------------------------------------------------------------------
* get
* --------------------------------------------------------------------------*/
TEST(get, emptyContainer) {
StringMap s = { };
auto expected = std::nullopt;
ASSERT_EQ(get(s, "one"), expected);
}
TEST(get, getFromContainer) {
StringMap s;
s["one"] = "yi";
s["two"] = "er";
auto expected = "yi";
ASSERT_EQ(get(s, "one"), expected);
}
/* ----------------------------------------------------------------------------
* filterANSIEscapes
* --------------------------------------------------------------------------*/
TEST(filterANSIEscapes, emptyString) {
auto s = "";
auto expected = "";
ASSERT_EQ(filterANSIEscapes(s), expected);
}
TEST(filterANSIEscapes, doesntChangePrintableChars) {
auto s = "09 2q304ruyhr slk2-19024 kjsadh sar f";
ASSERT_EQ(filterANSIEscapes(s), s);
}
TEST(filterANSIEscapes, filtersColorCodes) {
auto s = "\u001b[30m A \u001b[31m B \u001b[32m C \u001b[33m D \u001b[0m";
ASSERT_EQ(filterANSIEscapes(s, true, 2), " A" );
ASSERT_EQ(filterANSIEscapes(s, true, 3), " A " );
ASSERT_EQ(filterANSIEscapes(s, true, 4), " A " );
ASSERT_EQ(filterANSIEscapes(s, true, 5), " A B" );
ASSERT_EQ(filterANSIEscapes(s, true, 8), " A B C" );
}
TEST(filterANSIEscapes, expandsTabs) {
auto s = "foo\tbar\tbaz";
ASSERT_EQ(filterANSIEscapes(s, true), "foo bar baz" );
}
}

View file

@ -25,4 +25,12 @@ typedef list<Path> Paths;
typedef set<Path> PathSet;
/* Helper class to run code at startup. */
template<typename T>
struct OnStartup
{
OnStartup(T && t) { t(); }
};
}

137
src/libutil/url.cc Normal file
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@ -0,0 +1,137 @@
#include "url.hh"
#include "util.hh"
namespace nix {
std::regex refRegex(refRegexS, std::regex::ECMAScript);
std::regex revRegex(revRegexS, std::regex::ECMAScript);
std::regex flakeIdRegex(flakeIdRegexS, std::regex::ECMAScript);
ParsedURL parseURL(const std::string & url)
{
static std::regex uriRegex(
"((" + schemeRegex + "):"
+ "(?:(?://(" + authorityRegex + ")(" + absPathRegex + "))|(/?" + pathRegex + ")))"
+ "(?:\\?(" + queryRegex + "))?"
+ "(?:#(" + queryRegex + "))?",
std::regex::ECMAScript);
std::smatch match;
if (std::regex_match(url, match, uriRegex)) {
auto & base = match[1];
std::string scheme = match[2];
auto authority = match[3].matched
? std::optional<std::string>(match[3]) : std::nullopt;
std::string path = match[4].matched ? match[4] : match[5];
auto & query = match[6];
auto & fragment = match[7];
auto isFile = scheme.find("file") != std::string::npos;
if (authority && *authority != "" && isFile)
throw Error("file:// URL '%s' has unexpected authority '%s'",
url, *authority);
if (isFile && path.empty())
path = "/";
return ParsedURL{
.url = url,
.base = base,
.scheme = scheme,
.authority = authority,
.path = path,
.query = decodeQuery(query),
.fragment = percentDecode(std::string(fragment))
};
}
else
throw BadURL("'%s' is not a valid URL", url);
}
std::string percentDecode(std::string_view in)
{
std::string decoded;
for (size_t i = 0; i < in.size(); ) {
if (in[i] == '%') {
if (i + 2 >= in.size())
throw BadURL("invalid URI parameter '%s'", in);
try {
decoded += std::stoul(std::string(in, i + 1, 2), 0, 16);
i += 3;
} catch (...) {
throw BadURL("invalid URI parameter '%s'", in);
}
} else
decoded += in[i++];
}
return decoded;
}
std::map<std::string, std::string> decodeQuery(const std::string & query)
{
std::map<std::string, std::string> result;
for (auto s : tokenizeString<Strings>(query, "&")) {
auto e = s.find('=');
if (e != std::string::npos)
result.emplace(
s.substr(0, e),
percentDecode(std::string_view(s).substr(e + 1)));
}
return result;
}
std::string percentEncode(std::string_view s)
{
std::string res;
for (auto & c : s)
if ((c >= 'a' && c <= 'z')
|| (c >= 'A' && c <= 'Z')
|| (c >= '0' && c <= '9')
|| strchr("-._~!$&'()*+,;=:@", c))
res += c;
else
res += fmt("%%%02x", (unsigned int) c);
return res;
}
std::string encodeQuery(const std::map<std::string, std::string> & ss)
{
std::string res;
bool first = true;
for (auto & [name, value] : ss) {
if (!first) res += '&';
first = false;
res += percentEncode(name);
res += '=';
res += percentEncode(value);
}
return res;
}
std::string ParsedURL::to_string() const
{
return
scheme
+ ":"
+ (authority ? "//" + *authority : "")
+ path
+ (query.empty() ? "" : "?" + encodeQuery(query))
+ (fragment.empty() ? "" : "#" + percentEncode(fragment));
}
bool ParsedURL::operator ==(const ParsedURL & other) const
{
return
scheme == other.scheme
&& authority == other.authority
&& path == other.path
&& query == other.query
&& fragment == other.fragment;
}
}

62
src/libutil/url.hh Normal file
View file

@ -0,0 +1,62 @@
#pragma once
#include "types.hh"
#include <regex>
namespace nix {
struct ParsedURL
{
std::string url;
std::string base; // URL without query/fragment
std::string scheme;
std::optional<std::string> authority;
std::string path;
std::map<std::string, std::string> query;
std::string fragment;
std::string to_string() const;
bool operator ==(const ParsedURL & other) const;
};
MakeError(BadURL, Error);
std::string percentDecode(std::string_view in);
std::map<std::string, std::string> decodeQuery(const std::string & query);
ParsedURL parseURL(const std::string & url);
// URI stuff.
const static std::string pctEncoded = "(?:%[0-9a-fA-F][0-9a-fA-F])";
const static std::string schemeRegex = "(?:[a-z+]+)";
const static std::string ipv6AddressRegex = "(?:\\[[0-9a-fA-F:]+\\])";
const static std::string unreservedRegex = "(?:[a-zA-Z0-9-._~])";
const static std::string subdelimsRegex = "(?:[!$&'\"()*+,;=])";
const static std::string hostnameRegex = "(?:(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + ")*)";
const static std::string hostRegex = "(?:" + ipv6AddressRegex + "|" + hostnameRegex + ")";
const static std::string userRegex = "(?:(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + "|:)*)";
const static std::string authorityRegex = "(?:" + userRegex + "@)?" + hostRegex + "(?::[0-9]+)?";
const static std::string pcharRegex = "(?:" + unreservedRegex + "|" + pctEncoded + "|" + subdelimsRegex + "|[:@])";
const static std::string queryRegex = "(?:" + pcharRegex + "|[/? \"])*";
const static std::string segmentRegex = "(?:" + pcharRegex + "+)";
const static std::string absPathRegex = "(?:(?:/" + segmentRegex + ")*/?)";
const static std::string pathRegex = "(?:" + segmentRegex + "(?:/" + segmentRegex + ")*/?)";
// A Git ref (i.e. branch or tag name).
const static std::string refRegexS = "[a-zA-Z0-9][a-zA-Z0-9_.-]*"; // FIXME: check
extern std::regex refRegex;
// A Git revision (a SHA-1 commit hash).
const static std::string revRegexS = "[0-9a-fA-F]{40}";
extern std::regex revRegex;
// A ref or revision, or a ref followed by a revision.
const static std::string refAndOrRevRegex = "(?:(" + revRegexS + ")|(?:(" + refRegexS + ")(?:/(" + revRegexS + "))?))";
const static std::string flakeIdRegexS = "[a-zA-Z][a-zA-Z0-9_-]*";
extern std::regex flakeIdRegex;
}

View file

@ -250,16 +250,13 @@ bool isLink(const Path & path)
}
DirEntries readDirectory(const Path & path)
DirEntries readDirectory(DIR *dir, const Path & path)
{
DirEntries entries;
entries.reserve(64);
AutoCloseDir dir(opendir(path.c_str()));
if (!dir) throw SysError("opening directory '%1%'", path);
struct dirent * dirent;
while (errno = 0, dirent = readdir(dir.get())) { /* sic */
while (errno = 0, dirent = readdir(dir)) { /* sic */
checkInterrupt();
string name = dirent->d_name;
if (name == "." || name == "..") continue;
@ -276,6 +273,14 @@ DirEntries readDirectory(const Path & path)
return entries;
}
DirEntries readDirectory(const Path & path)
{
AutoCloseDir dir(opendir(path.c_str()));
if (!dir) throw SysError(format("opening directory '%1%'") % path);
return readDirectory(dir.get(), path);
}
unsigned char getFileType(const Path & path)
{
@ -293,19 +298,16 @@ string readFile(int fd)
if (fstat(fd, &st) == -1)
throw SysError("statting file");
std::vector<unsigned char> buf(st.st_size);
readFull(fd, buf.data(), st.st_size);
return string((char *) buf.data(), st.st_size);
return drainFD(fd, true, st.st_size);
}
string readFile(const Path & path, bool drain)
string readFile(const Path & path)
{
AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
if (!fd)
throw SysError("opening file '%1%'", path);
return drain ? drainFD(fd.get()) : readFile(fd.get());
throw SysError(format("opening file '%1%'") % path);
return readFile(fd.get());
}
@ -372,12 +374,14 @@ void writeLine(int fd, string s)
}
static void _deletePath(const Path & path, unsigned long long & bytesFreed)
static void _deletePath(int parentfd, const Path & path, unsigned long long & bytesFreed)
{
checkInterrupt();
string name(baseNameOf(path));
struct stat st;
if (lstat(path.c_str(), &st) == -1) {
if (fstatat(parentfd, name.c_str(), &st, AT_SYMLINK_NOFOLLOW) == -1) {
if (errno == ENOENT) return;
throw SysError("getting status of '%1%'", path);
}
@ -389,20 +393,45 @@ static void _deletePath(const Path & path, unsigned long long & bytesFreed)
/* Make the directory accessible. */
const auto PERM_MASK = S_IRUSR | S_IWUSR | S_IXUSR;
if ((st.st_mode & PERM_MASK) != PERM_MASK) {
if (chmod(path.c_str(), st.st_mode | PERM_MASK) == -1)
throw SysError("chmod '%1%'", path);
if (fchmodat(parentfd, name.c_str(), st.st_mode | PERM_MASK, 0) == -1)
throw SysError(format("chmod '%1%'") % path);
}
for (auto & i : readDirectory(path))
_deletePath(path + "/" + i.name, bytesFreed);
int fd = openat(parentfd, path.c_str(), O_RDONLY);
if (!fd)
throw SysError(format("opening directory '%1%'") % path);
AutoCloseDir dir(fdopendir(fd));
if (!dir)
throw SysError(format("opening directory '%1%'") % path);
for (auto & i : readDirectory(dir.get(), path))
_deletePath(dirfd(dir.get()), path + "/" + i.name, bytesFreed);
}
if (remove(path.c_str()) == -1) {
int flags = S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0;
if (unlinkat(parentfd, name.c_str(), flags) == -1) {
if (errno == ENOENT) return;
throw SysError("cannot unlink '%1%'", path);
}
}
static void _deletePath(const Path & path, unsigned long long & bytesFreed)
{
Path dir = dirOf(path);
if (dir == "")
dir = "/";
AutoCloseFD dirfd(open(dir.c_str(), O_RDONLY));
if (!dirfd) {
// This really shouldn't fail silently, but it's left this way
// for backwards compatibility.
if (errno == ENOENT) return;
throw SysError(format("opening directory '%1%'") % path);
}
_deletePath(dirfd.get(), path, bytesFreed);
}
void deletePath(const Path & path)
{
@ -616,9 +645,9 @@ void writeFull(int fd, const string & s, bool allowInterrupts)
}
string drainFD(int fd, bool block)
string drainFD(int fd, bool block, const size_t reserveSize)
{
StringSink sink;
StringSink sink(reserveSize);
drainFD(fd, sink, block);
return std::move(*sink.s);
}

View file

@ -18,6 +18,7 @@
#include <sstream>
#include <optional>
#include <future>
#include <iterator>
#ifndef HAVE_STRUCT_DIRENT_D_TYPE
#define DT_UNKNOWN 0
@ -58,12 +59,12 @@ Path canonPath(const Path & path, bool resolveSymlinks = false);
/* Return the directory part of the given canonical path, i.e.,
everything before the final `/'. If the path is the root or an
immediate child thereof (e.g., `/foo'), this means an empty string
is returned. */
immediate child thereof (e.g., `/foo'), this means `/'
is returned.*/
Path dirOf(const Path & path);
/* Return the base name of the given canonical path, i.e., everything
following the final `/'. */
following the final `/' (trailing slashes are removed). */
std::string_view baseNameOf(std::string_view path);
/* Check whether 'path' is a descendant of 'dir'. */
@ -103,7 +104,7 @@ unsigned char getFileType(const Path & path);
/* Read the contents of a file into a string. */
string readFile(int fd);
string readFile(const Path & path, bool drain = false);
string readFile(const Path & path);
void readFile(const Path & path, Sink & sink);
/* Write a string to a file. */
@ -162,7 +163,7 @@ MakeError(EndOfFile, Error);
/* Read a file descriptor until EOF occurs. */
string drainFD(int fd, bool block = true);
string drainFD(int fd, bool block = true, const size_t reserveSize=0);
void drainFD(int fd, Sink & sink, bool block = true);
@ -389,17 +390,6 @@ string replaceStrings(const std::string & s,
std::string rewriteStrings(const std::string & s, const StringMap & rewrites);
/* If a set contains 'from', remove it and insert 'to'. */
template<typename T>
void replaceInSet(std::set<T> & set, const T & from, const T & to)
{
auto i = set.find(from);
if (i == set.end()) return;
set.erase(i);
set.insert(to);
}
/* Convert the exit status of a child as returned by wait() into an
error string. */
string statusToString(int status);