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Remove std::string alias (for real this time)

Browse source 
Also use std::string_view in a few more places.
This commit is contained in:
Eelco Dolstra 2022-02-25 16:00:00 +01:00
parent 14b38d0887
commit df552ff53e
110 changed files with 773 additions and 681 deletions
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28
src/libutil/archive.cc
View file

@ -37,7 +37,7 @@ static GlobalConfig::Register rArchiveSettings(&archiveSettings);
const std::string narVersionMagic1 = "nix-archive-1";
static string caseHackSuffix = "~nix~case~hack~";
static std::string caseHackSuffix = "~nix~case~hack~";
PathFilter defaultPathFilter = [](const Path &) { return true; };
@ -84,12 +84,12 @@ static void dump(const Path & path, Sink & sink, PathFilter & filter)
/* If we're on a case-insensitive system like macOS, undo
the case hack applied by restorePath(). */
std::map<string, string> unhacked;
std::map<std::string, std::string> unhacked;
for (auto & i : readDirectory(path))
if (archiveSettings.useCaseHack) {
string name(i.name);
std::string name(i.name);
size_t pos = i.name.find(caseHackSuffix);
if (pos != string::npos) {
if (pos != std::string::npos) {
debug(format("removing case hack suffix from '%1%'") % (path + "/" + i.name));
name.erase(pos);
}
@ -124,13 +124,13 @@ void dumpPath(const Path & path, Sink & sink, PathFilter & filter)
}
void dumpString(const std::string & s, Sink & sink)
void dumpString(std::string_view s, Sink & sink)
{
sink << narVersionMagic1 << "(" << "type" << "regular" << "contents" << s << ")";
}
static SerialisationError badArchive(string s)
static SerialisationError badArchive(const std::string & s)
{
return SerialisationError("bad archive: " + s);
}
@ -171,7 +171,7 @@ static void parseContents(ParseSink & sink, Source & source, const Path & path)
struct CaseInsensitiveCompare
{
bool operator() (const string & a, const string & b) const
bool operator() (const std::string & a, const std::string & b) const
{
return strcasecmp(a.c_str(), b.c_str()) < 0;
}
@ -180,7 +180,7 @@ struct CaseInsensitiveCompare
static void parse(ParseSink & sink, Source & source, const Path & path)
{
string s;
std::string s;
s = readString(source);
if (s != "(") throw badArchive("expected open tag");
@ -201,7 +201,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
else if (s == "type") {
if (type != tpUnknown)
throw badArchive("multiple type fields");
string t = readString(source);
std::string t = readString(source);
if (t == "regular") {
type = tpRegular;
@ -232,7 +232,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
}
else if (s == "entry" && type == tpDirectory) {
string name, prevName;
std::string name, prevName;
s = readString(source);
if (s != "(") throw badArchive("expected open tag");
@ -246,7 +246,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
break;
} else if (s == "name") {
name = readString(source);
if (name.empty() || name == "." || name == ".." || name.find('/') != string::npos || name.find((char) 0) != string::npos)
if (name.empty() || name == "." || name == ".." || name.find('/') != std::string::npos || name.find((char) 0) != std::string::npos)
throw Error("NAR contains invalid file name '%1%'", name);
if (name <= prevName)
throw Error("NAR directory is not sorted");
@ -269,7 +269,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
}
else if (s == "target" && type == tpSymlink) {
string target = readString(source);
std::string target = readString(source);
sink.createSymlink(path, target);
}
@ -281,7 +281,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
void parseDump(ParseSink & sink, Source & source)
{
string version;
std::string version;
try {
version = readString(source, narVersionMagic1.size());
} catch (SerialisationError & e) {
@ -345,7 +345,7 @@ struct RestoreSink : ParseSink
writeFull(fd.get(), data);
}
void createSymlink(const Path & path, const string & target) override
void createSymlink(const Path & path, const std::string & target) override
{
Path p = dstPath + path;
nix::createSymlink(target, p);

6
src/libutil/archive.hh
View file

@ -48,7 +48,7 @@ namespace nix {
void dumpPath(const Path & path, Sink & sink,
PathFilter & filter = defaultPathFilter);
void dumpString(const std::string & s, Sink & sink);
void dumpString(std::string_view s, Sink & sink);
/* FIXME: fix this API, it sucks. */
struct ParseSink
@ -60,7 +60,7 @@ struct ParseSink
virtual void preallocateContents(uint64_t size) { };
virtual void receiveContents(std::string_view data) { };
virtual void createSymlink(const Path & path, const string & target) { };
virtual void createSymlink(const Path & path, const std::string & target) { };
};
/* If the NAR archive contains a single file at top-level, then save
@ -82,7 +82,7 @@ struct RetrieveRegularNARSink : ParseSink
sink(data);
}
void createSymlink(const Path & path, const string & target) override
void createSymlink(const Path & path, const std::string & target) override
{
regular = false;
}

12
src/libutil/args.cc
View file

@ -76,13 +76,13 @@ void Args::parseCmdline(const Strings & _cmdline)
/* Expand compound dash options (i.e., `-qlf' -> `-q -l -f',
`-j3` -> `-j 3`). */
if (!dashDash && arg.length() > 2 && arg[0] == '-' && arg[1] != '-' && isalpha(arg[1])) {
*pos = (string) "-" + arg[1];
*pos = (std::string) "-" + arg[1];
auto next = pos; ++next;
for (unsigned int j = 2; j < arg.length(); j++)
if (isalpha(arg[j]))
cmdline.insert(next, (string) "-" + arg[j]);
cmdline.insert(next, (std::string) "-" + arg[j]);
else {
cmdline.insert(next, string(arg, j));
cmdline.insert(next, std::string(arg, j));
break;
}
arg = *pos;
@ -139,7 +139,7 @@ bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
return true;
};
if (string(*pos, 0, 2) == "--") {
if (std::string(*pos, 0, 2) == "--") {
if (auto prefix = needsCompletion(*pos)) {
for (auto & [name, flag] : longFlags) {
if (!hiddenCategories.count(flag->category)
@ -147,12 +147,12 @@ bool Args::processFlag(Strings::iterator & pos, Strings::iterator end)
completions->add("--" + name, flag->description);
}
}
auto i = longFlags.find(string(*pos, 2));
auto i = longFlags.find(std::string(*pos, 2));
if (i == longFlags.end()) return false;
return process("--" + i->first, *i->second);
}
if (string(*pos, 0, 1) == "-" && pos->size() == 2) {
if (std::string(*pos, 0, 1) == "-" && pos->size() == 2) {
auto c = (*pos)[1];
auto i = shortFlags.find(c);
if (i == shortFlags.end()) return false;

2
src/libutil/args.hh
View file

@ -158,7 +158,7 @@ public:
}
/* Expect a string argument. */
void expectArg(const std::string & label, string * dest, bool optional = false)
void expectArg(const std::string & label, std::string * dest, bool optional = false)
{
expectArgs({
.label = label,

14
src/libutil/config.cc
View file

@ -81,16 +81,16 @@ void AbstractConfig::applyConfig(const std::string & contents, const std::string
unsigned int pos = 0;
while (pos < contents.size()) {
string line;
std::string line;
while (pos < contents.size() && contents[pos] != '\n')
line += contents[pos++];
pos++;
string::size_type hash = line.find('#');
if (hash != string::npos)
line = string(line, 0, hash);
auto hash = line.find('#');
if (hash != std::string::npos)
line = std::string(line, 0, hash);
auto tokens = tokenizeString<std::vector<string>>(line);
auto tokens = tokenizeString<std::vector<std::string>>(line);
if (tokens.empty()) continue;
if (tokens.size() < 2)
@ -120,7 +120,7 @@ void AbstractConfig::applyConfig(const std::string & contents, const std::string
if (tokens[1] != "=")
throw UsageError("illegal configuration line '%1%' in '%2%'", line, path);
string name = tokens[0];
std::string name = tokens[0];
auto i = tokens.begin();
advance(i, 2);
@ -132,7 +132,7 @@ void AbstractConfig::applyConfig(const std::string & contents, const std::string
void AbstractConfig::applyConfigFile(const Path & path)
{
try {
string contents = readFile(path);
std::string contents = readFile(path);
applyConfig(contents, path);
} catch (SysError &) { }
}

12
src/libutil/error.cc
View file

@ -17,7 +17,7 @@ BaseError & BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
// c++ std::exception descendants must have a 'const char* what()' function.
// This stringifies the error and caches it for use by what(), or similarly by msg().
const string & BaseError::calcWhat() const
const std::string & BaseError::calcWhat() const
{
if (what_.has_value())
return *what_;
@ -32,14 +32,14 @@ const string & BaseError::calcWhat() const
}
}
std::optional<string> ErrorInfo::programName = std::nullopt;
std::optional<std::string> ErrorInfo::programName = std::nullopt;
std::ostream & operator<<(std::ostream & os, const hintformat & hf)
{
return os << hf.str();
}
string showErrPos(const ErrPos & errPos)
std::string showErrPos(const ErrPos & errPos)
{
if (errPos.line > 0) {
if (errPos.column > 0) {
@ -68,7 +68,7 @@ std::optional<LinesOfCode> getCodeLines(const ErrPos & errPos)
// count the newlines.
int count = 0;
string line;
std::string line;
int pl = errPos.line - 1;
do
{
@ -100,7 +100,7 @@ std::optional<LinesOfCode> getCodeLines(const ErrPos & errPos)
std::istringstream iss(errPos.file);
// count the newlines.
int count = 0;
string line;
std::string line;
int pl = errPos.line - 1;
LinesOfCode loc;
@ -132,7 +132,7 @@ std::optional<LinesOfCode> getCodeLines(const ErrPos & errPos)
// print lines of code to the ostream, indicating the error column.
void printCodeLines(std::ostream & out,
const string & prefix,
const std::string & prefix,
const ErrPos & errPos,
const LinesOfCode & loc)
{

26
src/libutil/error.hh
View file

@ -61,16 +61,16 @@ typedef enum {
// the lines of code surrounding an error.
struct LinesOfCode {
std::optional<string> prevLineOfCode;
std::optional<string> errLineOfCode;
std::optional<string> nextLineOfCode;
std::optional<std::string> prevLineOfCode;
std::optional<std::string> errLineOfCode;
std::optional<std::string> nextLineOfCode;
};
// ErrPos indicates the location of an error in a nix file.
struct ErrPos {
int line = 0;
int column = 0;
string file;
std::string file;
FileOrigin origin;
operator bool() const
@ -80,7 +80,7 @@ struct ErrPos {
// convert from the Pos struct, found in libexpr.
template <class P>
ErrPos& operator=(const P &pos)
ErrPos & operator=(const P & pos)
{
origin = pos.origin;
line = pos.line;
@ -94,7 +94,7 @@ struct ErrPos {
}
template <class P>
ErrPos(const P &p)
ErrPos(const P & p)
{
*this = p;
}
@ -107,15 +107,15 @@ struct Trace {
struct ErrorInfo {
Verbosity level;
string name; // FIXME: rename
std::string name; // FIXME: rename
hintformat msg;
std::optional<ErrPos> errPos;
std::list<Trace> traces;
static std::optional<string> programName;
static std::optional<std::string> programName;
};
std::ostream& showErrorInfo(std::ostream &out, const ErrorInfo &einfo, bool showTrace);
std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool showTrace);
/* BaseError should generally not be caught, as it has Interrupted as
a subclass. Catch Error instead. */
@ -124,8 +124,8 @@ class BaseError : public std::exception
protected:
mutable ErrorInfo err;
mutable std::optional<string> what_;
const string& calcWhat() const;
mutable std::optional<std::string> what_;
const std::string & calcWhat() const;
public:
unsigned int status = 1; // exit status
@ -162,11 +162,11 @@ public:
const char * what() const noexcept override { return calcWhat().c_str(); }
#endif
const string & msg() const { return calcWhat(); }
const std::string & msg() const { return calcWhat(); }
const ErrorInfo & info() const { calcWhat(); return err; }
template<typename... Args>
BaseError & addTrace(std::optional<ErrPos> e, const string &fs, const Args & ... args)
BaseError & addTrace(std::optional<ErrPos> e, const std::string & fs, const Args & ... args)
{
return addTrace(e, hintfmt(fs, args...));
}

7
src/libutil/fmt.hh
View file

@ -10,7 +10,6 @@ namespace nix {
/* Inherit some names from other namespaces for convenience. */
using std::string;
using boost::format;
@ -21,8 +20,8 @@ struct nop { template<typename... T> nop(T...) {} };
struct FormatOrString
{
string s;
FormatOrString(const string & s) : s(s) { };
std::string s;
FormatOrString(std::string s) : s(std::move(s)) { };
template<class F>
FormatOrString(const F & f) : s(f.str()) { };
FormatOrString(const char * s) : s(s) { };
@ -102,7 +101,7 @@ std::ostream & operator<<(std::ostream & out, const normaltxt<T> & y)
class hintformat
{
public:
hintformat(const string & format) : fmt(format)
hintformat(const std::string & format) : fmt(format)
{
fmt.exceptions(boost::io::all_error_bits ^
boost::io::too_many_args_bit ^

19
src/libutil/hash.cc
View file

@ -66,31 +66,31 @@ bool Hash::operator < (const Hash & h) const
}
const string base16Chars = "0123456789abcdef";
const std::string base16Chars = "0123456789abcdef";
static string printHash16(const Hash & hash)
static std::string printHash16(const Hash & hash)
{
char buf[hash.hashSize * 2];
for (unsigned int i = 0; i < hash.hashSize; i++) {
buf[i * 2] = base16Chars[hash.hash[i] >> 4];
buf[i * 2 + 1] = base16Chars[hash.hash[i] & 0x0f];
}
return string(buf, hash.hashSize * 2);
return std::string(buf, hash.hashSize * 2);
}
// omitted: E O U T
const string base32Chars = "0123456789abcdfghijklmnpqrsvwxyz";
const std::string base32Chars = "0123456789abcdfghijklmnpqrsvwxyz";
static string printHash32(const Hash & hash)
static std::string printHash32(const Hash & hash)
{
assert(hash.hashSize);
size_t len = hash.base32Len();
assert(len);
string s;
std::string s;
s.reserve(len);
for (int n = (int) len - 1; n >= 0; n--) {
@ -107,7 +107,7 @@ static string printHash32(const Hash & hash)
}
string printHash16or32(const Hash & hash)
std::string printHash16or32(const Hash & hash)
{
assert(hash.type);
return hash.to_string(hash.type == htMD5 ? Base16 : Base32, false);
@ -151,7 +151,8 @@ Hash Hash::parseSRI(std::string_view original) {
}
// Mutates the string to eliminate the prefixes when found
static std::pair<std::optional<HashType>, bool> getParsedTypeAndSRI(std::string_view & rest) {
static std::pair<std::optional<HashType>, bool> getParsedTypeAndSRI(std::string_view & rest)
{
bool isSRI = false;
// Parse the has type before the separater, if there was one.
@ -402,7 +403,7 @@ HashType parseHashType(std::string_view s)
throw UsageError("unknown hash algorithm '%1%'", s);
}
string printHashType(HashType ht)
std::string printHashType(HashType ht)
{
switch (ht) {
case htMD5: return "md5";

6
src/libutil/hash.hh
View file

@ -20,7 +20,7 @@ const int sha512HashSize = 64;
extern std::set<std::string> hashTypes;
extern const string base32Chars;
extern const std::string base32Chars;
enum Base : int { Base64, Base32, Base16, SRI };
@ -110,7 +110,7 @@ public:
Hash newHashAllowEmpty(std::string_view hashStr, std::optional<HashType> ht);
/* Print a hash in base-16 if it's MD5, or base-32 otherwise. */
string printHash16or32(const Hash & hash);
std::string printHash16or32(const Hash & hash);
/* Compute the hash of the given string. */
Hash hashString(HashType ht, std::string_view s);
@ -135,7 +135,7 @@ HashType parseHashType(std::string_view s);
std::optional<HashType> parseHashTypeOpt(std::string_view s);
/* And the reverse. */
string printHashType(HashType ht);
std::string printHashType(HashType ht);
union Ctx;

2
src/libutil/logging.cc
View file

@ -113,7 +113,7 @@ void warnOnce(bool & haveWarned, const FormatOrString & fs)
}
}
void writeToStderr(const string & s)
void writeToStderr(std::string_view s)
{
try {
writeFull(STDERR_FILENO, s, false);

2
src/libutil/logging.hh
View file

@ -216,6 +216,6 @@ inline void warn(const std::string & fs, const Args & ... args)
void warnOnce(bool & haveWarned, const FormatOrString & fs);
void writeToStderr(const string & s);
void writeToStderr(std::string_view s);
}

4
src/libutil/serialise.cc
View file

@ -391,7 +391,7 @@ size_t readString(char * buf, size_t max, Source & source)
}
string readString(Source & source, size_t max)
std::string readString(Source & source, size_t max)
{
auto len = readNum<size_t>(source);
if (len > max) throw SerialisationError("string is too long");
@ -401,7 +401,7 @@ string readString(Source & source, size_t max)
return res;
}
Source & operator >> (Source & in, string & s)
Source & operator >> (Source & in, std::string & s)
{
s = readString(in);
return in;

4
src/libutil/serialise.hh
View file

@ -364,10 +364,10 @@ inline uint64_t readLongLong(Source & source)
void readPadding(size_t len, Source & source);
size_t readString(char * buf, size_t max, Source & source);
string readString(Source & source, size_t max = std::numeric_limits<size_t>::max());
std::string readString(Source & source, size_t max = std::numeric_limits<size_t>::max());
template<class T> T readStrings(Source & source);
Source & operator >> (Source & in, string & s);
Source & operator >> (Source & in, std::string & s);
template<typename T>
Source & operator >> (Source & in, T & n)

18
src/libutil/tests/url.cc
View file

@ -5,9 +5,9 @@ namespace nix {
/* ----------- tests for url.hh --------------------------------------------------*/
string print_map(std::map<string, string> m) {
std::map<string, string>::iterator it;
string s = "{ ";
std::string print_map(std::map<std::string, std::string> m) {
std::map<std::string, std::string>::iterator it;
std::string s = "{ ";
for (it = m.begin(); it != m.end(); ++it) {
s += "{ ";
s += it->first;
@ -262,21 +262,21 @@ namespace nix {
* --------------------------------------------------------------------------*/
TEST(percentDecode, decodesUrlEncodedString) {
string s = "==@==";
string d = percentDecode("%3D%3D%40%3D%3D");
std::string s = "==@==";
std::string d = percentDecode("%3D%3D%40%3D%3D");
ASSERT_EQ(d, s);
}
TEST(percentDecode, multipleDecodesAreIdempotent) {
string once = percentDecode("%3D%3D%40%3D%3D");
string twice = percentDecode(once);
std::string once = percentDecode("%3D%3D%40%3D%3D");
std::string twice = percentDecode(once);
ASSERT_EQ(once, twice);
}
TEST(percentDecode, trailingPercent) {
string s = "==@==%";
string d = percentDecode("%3D%3D%40%3D%3D%25");
std::string s = "==@==%";
std::string d = percentDecode("%3D%3D%40%3D%3D%25");
ASSERT_EQ(d, s);
}

1
src/libutil/types.hh
View file

@ -14,6 +14,7 @@ namespace nix {
typedef std::list<std::string> Strings;
typedef std::set<std::string> StringSet;
typedef std::map<std::string, std::string> StringMap;
typedef std::map<std::string, std::string> StringPairs;
/* Paths are just strings. */
typedef std::string Path;

84
src/libutil/util.cc
View file

@ -110,13 +110,13 @@ Path canonPath(PathView path, bool resolveSymlinks)
{
assert(path != "");
string s;
std::string s;
s.reserve(256);
if (path[0] != '/')
throw Error("not an absolute path: '%1%'", path);
string temp;
std::string temp;
/* Count the number of times we follow a symlink and stop at some
arbitrary (but high) limit to prevent infinite loops. */
@ -142,7 +142,7 @@ Path canonPath(PathView path, bool resolveSymlinks)
/* Normal component; copy it. */
else {
s += '/';
if (const auto slash = path.find('/'); slash == string::npos) {
if (const auto slash = path.find('/'); slash == std::string::npos) {
s += path;
path = {};
} else {
@ -175,7 +175,7 @@ Path canonPath(PathView path, bool resolveSymlinks)
Path dirOf(const PathView path)
{
Path::size_type pos = path.rfind('/');
if (pos == string::npos)
if (pos == std::string::npos)
return ".";
return pos == 0 ? "/" : Path(path, 0, pos);
}
@ -191,7 +191,7 @@ std::string_view baseNameOf(std::string_view path)
last -= 1;
auto pos = path.rfind('/', last);
if (pos == string::npos)
if (pos == std::string::npos)
pos = 0;
else
pos += 1;
@ -249,7 +249,7 @@ Path readLink(const Path & path)
else
throw SysError("reading symbolic link '%1%'", path);
else if (rlSize < bufSize)
return string(buf.data(), rlSize);
return std::string(buf.data(), rlSize);
}
}
@ -269,7 +269,7 @@ DirEntries readDirectory(DIR *dir, const Path & path)
struct dirent * dirent;
while (errno = 0, dirent = readdir(dir)) { /* sic */
checkInterrupt();
string name = dirent->d_name;
std::string name = dirent->d_name;
if (name == "." || name == "..") continue;
entries.emplace_back(name, dirent->d_ino,
#ifdef HAVE_STRUCT_DIRENT_D_TYPE
@ -303,7 +303,7 @@ unsigned char getFileType(const Path & path)
}
string readFile(int fd)
std::string readFile(int fd)
{
struct stat st;
if (fstat(fd, &st) == -1)
@ -313,7 +313,7 @@ string readFile(int fd)
}
string readFile(const Path & path)
std::string readFile(const Path & path)
{
AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
if (!fd)
@ -366,9 +366,9 @@ void writeFile(const Path & path, Source & source, mode_t mode)
}
}
string readLine(int fd)
std::string readLine(int fd)
{
string s;
std::string s;
while (1) {
checkInterrupt();
char ch;
@ -387,7 +387,7 @@ string readLine(int fd)
}
void writeLine(int fd, string s)
void writeLine(int fd, std::string s)
{
s += '\n';
writeFull(fd, s);
@ -398,7 +398,7 @@ static void _deletePath(int parentfd, const Path & path, uint64_t & bytesFreed)
{
checkInterrupt();
string name(baseNameOf(path));
std::string name(baseNameOf(path));
struct stat st;
if (fstatat(parentfd, name.c_str(), &st, AT_SYMLINK_NOFOLLOW) == -1) {
@ -566,8 +566,8 @@ Path getConfigDir()
std::vector<Path> getConfigDirs()
{
Path configHome = getConfigDir();
string configDirs = getEnv("XDG_CONFIG_DIRS").value_or("/etc/xdg");
std::vector<Path> result = tokenizeString<std::vector<string>>(configDirs, ":");
auto configDirs = getEnv("XDG_CONFIG_DIRS").value_or("/etc/xdg");
std::vector<Path> result = tokenizeString<std::vector<std::string>>(configDirs, ":");
result.insert(result.begin(), configHome);
return result;
}
@ -670,7 +670,7 @@ void writeFull(int fd, std::string_view s, bool allowInterrupts)
}
string drainFD(int fd, bool block, const size_t reserveSize)
std::string drainFD(int fd, bool block, const size_t reserveSize)
{
// the parser needs two extra bytes to append terminating characters, other users will
// not care very much about the extra memory.
@ -719,7 +719,7 @@ void drainFD(int fd, Sink & sink, bool block)
AutoDelete::AutoDelete() : del{false} {}
AutoDelete::AutoDelete(const string & p, bool recursive) : path(p)
AutoDelete::AutoDelete(const std::string & p, bool recursive) : path(p)
{
del = true;
this->recursive = recursive;
@ -1036,7 +1036,7 @@ std::vector<char *> stringsToCharPtrs(const Strings & ss)
return res;
}
string runProgram(Path program, bool searchPath, const Strings & args,
std::string runProgram(Path program, bool searchPath, const Strings & args,
const std::optional<std::string> & input)
{
auto res = runProgram(RunOptions {.program = program, .searchPath = searchPath, .args = args, .input = input});
@ -1238,11 +1238,11 @@ void _interrupted()
template<class C> C tokenizeString(std::string_view s, std::string_view separators)
{
C result;
string::size_type pos = s.find_first_not_of(separators, 0);
while (pos != string::npos) {
string::size_type end = s.find_first_of(separators, pos + 1);
if (end == string::npos) end = s.size();
result.insert(result.end(), string(s, pos, end - pos));
auto pos = s.find_first_not_of(separators, 0);
while (pos != std::string::npos) {
auto end = s.find_first_of(separators, pos + 1);
if (end == std::string::npos) end = s.size();
result.insert(result.end(), std::string(s, pos, end - pos));
pos = s.find_first_not_of(separators, end);
}
return result;
@ -1250,29 +1250,30 @@ template<class C> C tokenizeString(std::string_view s, std::string_view separato
template Strings tokenizeString(std::string_view s, std::string_view separators);
template StringSet tokenizeString(std::string_view s, std::string_view separators);
template std::vector<string> tokenizeString(std::string_view s, std::string_view separators);
template std::vector<std::string> tokenizeString(std::string_view s, std::string_view separators);
string chomp(std::string_view s)
std::string chomp(std::string_view s)
{
size_t i = s.find_last_not_of(" \n\r\t");
return i == string::npos ? "" : string(s, 0, i + 1);
return i == std::string_view::npos ? "" : std::string(s, 0, i + 1);
}
string trim(const string & s, const string & whitespace)
std::string trim(std::string_view s, std::string_view whitespace)
{
auto i = s.find_first_not_of(whitespace);
if (i == string::npos) return "";
if (i == std::string_view::npos) return "";
auto j = s.find_last_not_of(whitespace);
return string(s, i, j == string::npos ? j : j - i + 1);
return std::string(s, i, j == std::string::npos ? j : j - i + 1);
}
string replaceStrings(std::string_view s,
const std::string & from, const std::string & to)
std::string replaceStrings(
std::string res,
std::string_view from,
std::string_view to)
{
string res(s);
if (from.empty()) return res;
size_t pos = 0;
while ((pos = res.find(from, pos)) != std::string::npos) {
@ -1283,20 +1284,19 @@ string replaceStrings(std::string_view s,
}
std::string rewriteStrings(const std::string & _s, const StringMap & rewrites)
std::string rewriteStrings(std::string s, const StringMap & rewrites)
{
auto s = _s;
for (auto & i : rewrites) {
if (i.first == i.second) continue;
size_t j = 0;
while ((j = s.find(i.first, j)) != string::npos)
while ((j = s.find(i.first, j)) != std::string::npos)
s.replace(j, i.first.size(), i.second);
}
return s;
}
string statusToString(int status)
std::string statusToString(int status)
{
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
if (WIFEXITED(status))
@ -1448,9 +1448,9 @@ std::string filterANSIEscapes(const std::string & s, bool filterAll, unsigned in
constexpr char base64Chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
string base64Encode(std::string_view s)
std::string base64Encode(std::string_view s)
{
string res;
std::string res;
int data = 0, nbits = 0;
for (char c : s) {
@ -1469,7 +1469,7 @@ string base64Encode(std::string_view s)
}
string base64Decode(std::string_view s)
std::string base64Decode(std::string_view s)
{
constexpr char npos = -1;
constexpr std::array<char, 256> base64DecodeChars = [&]() {
@ -1481,7 +1481,7 @@ string base64Decode(std::string_view s)
return result;
}();
string res;
std::string res;
unsigned int d = 0, bits = 0;
for (char c : s) {
@ -1835,7 +1835,7 @@ void connect(int fd, const std::string & path)
}
string showBytes(uint64_t bytes)
std::string showBytes(uint64_t bytes)
{
return fmt("%.2f MiB", bytes / (1024.0 * 1024.0));
}
@ -1846,7 +1846,7 @@ void commonChildInit(Pipe & logPipe)
{
logger = makeSimpleLogger();
const static string pathNullDevice = "/dev/null";
const static std::string pathNullDevice = "/dev/null";
restoreProcessContext(false);
/* Put the child in a separate session (and thus a separate

44
src/libutil/util.hh
View file

@ -92,11 +92,11 @@ bool isLink(const Path & path);
removed. */
struct DirEntry
{
string name;
std::string name;
ino_t ino;
unsigned char type; // one of DT_*
DirEntry(const string & name, ino_t ino, unsigned char type)
: name(name), ino(ino), type(type) { }
DirEntry(std::string name, ino_t ino, unsigned char type)
: name(std::move(name)), ino(ino), type(type) { }
};
typedef std::vector<DirEntry> DirEntries;
@ -106,8 +106,8 @@ DirEntries readDirectory(const Path & path);
unsigned char getFileType(const Path & path);
/* Read the contents of a file into a string. */
string readFile(int fd);
string readFile(const Path & path);
std::string readFile(int fd);
std::string readFile(const Path & path);
void readFile(const Path & path, Sink & sink);
/* Write a string to a file. */
@ -116,10 +116,10 @@ void writeFile(const Path & path, std::string_view s, mode_t mode = 0666);
void writeFile(const Path & path, Source & source, mode_t mode = 0666);
/* Read a line from a file descriptor. */
string readLine(int fd);
std::string readLine(int fd);
/* Write a line to a file descriptor. */
void writeLine(int fd, string s);
void writeLine(int fd, std::string s);
/* Delete a path; i.e., in the case of a directory, it is deleted
recursively. It's not an error if the path does not exist. The
@ -170,7 +170,7 @@ MakeError(EndOfFile, Error);
/* Read a file descriptor until EOF occurs. */
string drainFD(int fd, bool block = true, const size_t reserveSize=0);
std::string drainFD(int fd, bool block = true, const size_t reserveSize=0);
void drainFD(int fd, Sink & sink, bool block = true);
@ -268,7 +268,7 @@ void killUser(uid_t uid);
pid to the caller. */
struct ProcessOptions
{
string errorPrefix = "";
std::string errorPrefix = "";
bool dieWithParent = true;
bool runExitHandlers = false;
bool allowVfork = false;
@ -279,7 +279,7 @@ pid_t startProcess(std::function<void()> fun, const ProcessOptions & options = P
/* Run a program and return its stdout in a string (i.e., like the
shell backtick operator). */
string runProgram(Path program, bool searchPath = false,
std::string runProgram(Path program, bool searchPath = false,
const Strings & args = Strings(),
const std::optional<std::string> & input = {});
@ -378,12 +378,12 @@ template<class C> C tokenizeString(std::string_view s, std::string_view separato
/* Concatenate the given strings with a separator between the
elements. */
template<class C>
string concatStringsSep(const std::string_view sep, const C & ss)
std::string concatStringsSep(const std::string_view sep, const C & ss)
{
size_t size = 0;
// need a cast to string_view since this is also called with Symbols
for (const auto & s : ss) size += sep.size() + std::string_view(s).size();
string s;
std::string s;
s.reserve(size);
for (auto & i : ss) {
if (s.size() != 0) s += sep;
@ -394,7 +394,7 @@ string concatStringsSep(const std::string_view sep, const C & ss)
template<class ... Parts>
auto concatStrings(Parts && ... parts)
-> std::enable_if_t<(... && std::is_convertible_v<Parts, std::string_view>), string>
-> std::enable_if_t<(... && std::is_convertible_v<Parts, std::string_view>), std::string>
{
std::string_view views[sizeof...(parts)] = { parts... };
return concatStringsSep({}, views);
@ -413,24 +413,26 @@ template<class C> Strings quoteStrings(const C & c)
/* Remove trailing whitespace from a string. FIXME: return
std::string_view. */
string chomp(std::string_view s);
std::string chomp(std::string_view s);
/* Remove whitespace from the start and end of a string. */
string trim(const string & s, const string & whitespace = " \n\r\t");
std::string trim(std::string_view s, std::string_view whitespace = " \n\r\t");
/* Replace all occurrences of a string inside another string. */
string replaceStrings(std::string_view s,
const std::string & from, const std::string & to);
std::string replaceStrings(
std::string s,
std::string_view from,
std::string_view to);
std::string rewriteStrings(const std::string & s, const StringMap & rewrites);
std::string rewriteStrings(std::string s, const StringMap & rewrites);
/* Convert the exit status of a child as returned by wait() into an
error string. */
string statusToString(int status);
std::string statusToString(int status);
bool statusOk(int status);
@ -525,8 +527,8 @@ std::string filterANSIEscapes(const std::string & s,
/* Base64 encoding/decoding. */
string base64Encode(std::string_view s);
string base64Decode(std::string_view s);
std::string base64Encode(std::string_view s);
std::string base64Decode(std::string_view s);
/* Remove common leading whitespace from the lines in the string