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
470
third_party/nix/src/libutil/util.hh
vendored
470
third_party/nix/src/libutil/util.hh
vendored
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@ -1,21 +1,19 @@
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#pragma once
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#include "types.hh"
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#include "logging.hh"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <signal.h>
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#include <functional>
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#include <limits>
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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 <cstdio>
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#include <map>
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#include <sstream>
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#include <optional>
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#include <functional>
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#include <future>
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#include <limits>
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#include <map>
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#include <optional>
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#include <sstream>
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#include "logging.hh"
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#include "types.hh"
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#ifndef HAVE_STRUCT_DIRENT_D_TYPE
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#define DT_UNKNOWN 0
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@ -29,13 +27,11 @@ namespace nix {
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struct Sink;
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struct Source;
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/* The system for which Nix is compiled. */
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extern const std::string nativeSystem;
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/* Return an environment variable. */
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string getEnv(const string & key, const string & def = "");
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string getEnv(const string& key, const string& def = "");
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/* Get the entire environment. */
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std::map<std::string, std::string> getEnv();
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@ -52,62 +48,61 @@ Path absPath(Path path, Path dir = "");
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double or trailing slashes. Optionally resolves all symlink
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components such that each component of the resulting path is *not*
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a symbolic link. */
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Path canonPath(const Path & path, bool resolveSymlinks = false);
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Path canonPath(const Path& path, bool resolveSymlinks = false);
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/* Return the directory part of the given canonical path, i.e.,
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everything before the final `/'. If the path is the root or an
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immediate child thereof (e.g., `/foo'), this means an empty string
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is returned. */
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Path dirOf(const Path & path);
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Path dirOf(const Path& path);
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/* Return the base name of the given canonical path, i.e., everything
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following the final `/'. */
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string baseNameOf(const Path & path);
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string baseNameOf(const Path& path);
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/* Check whether 'path' is a descendant of 'dir'. */
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bool isInDir(const Path & path, const Path & dir);
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bool isInDir(const Path& path, const Path& dir);
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/* Check whether 'path' is equal to 'dir' or a descendant of 'dir'. */
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bool isDirOrInDir(const Path & path, const Path & dir);
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bool isDirOrInDir(const Path& path, const Path& dir);
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/* Get status of `path'. */
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struct stat lstat(const Path & path);
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struct stat lstat(const Path& path);
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/* Return true iff the given path exists. */
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bool pathExists(const Path & path);
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bool pathExists(const Path& path);
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/* Read the contents (target) of a symbolic link. The result is not
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in any way canonicalised. */
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Path readLink(const Path & path);
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Path readLink(const Path& path);
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bool isLink(const Path & path);
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bool isLink(const Path& path);
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/* Read the contents of a directory. The entries `.' and `..' are
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removed. */
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struct DirEntry
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{
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string name;
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ino_t ino;
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unsigned char type; // one of DT_*
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DirEntry(const string & name, ino_t ino, unsigned char type)
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: name(name), ino(ino), type(type) { }
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struct DirEntry {
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string name;
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ino_t ino;
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unsigned char type; // one of DT_*
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DirEntry(const string& name, ino_t ino, unsigned char type)
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: name(name), ino(ino), type(type) {}
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};
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typedef vector<DirEntry> DirEntries;
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DirEntries readDirectory(const Path & path);
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DirEntries readDirectory(const Path& path);
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unsigned char getFileType(const Path & path);
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unsigned char getFileType(const Path& path);
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/* Read the contents of a file into a string. */
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string readFile(int fd);
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string readFile(const Path & path, bool drain = false);
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void readFile(const Path & path, Sink & sink);
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string readFile(const Path& path, bool drain = false);
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void readFile(const Path& path, Sink& sink);
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/* Write a string to a file. */
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void writeFile(const Path & path, const string & s, mode_t mode = 0666);
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void writeFile(const Path& path, const string& s, mode_t mode = 0666);
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void writeFile(const Path & path, Source & source, mode_t mode = 0666);
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void writeFile(const Path& path, Source& source, mode_t mode = 0666);
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/* Read a line from a file descriptor. */
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string readLine(int fd);
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@ -118,13 +113,14 @@ void writeLine(int fd, string s);
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/* Delete a path; i.e., in the case of a directory, it is deleted
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recursively. It's not an error if the path does not exist. The
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second variant returns the number of bytes and blocks freed. */
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void deletePath(const Path & path);
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void deletePath(const Path& path);
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void deletePath(const Path & path, unsigned long long & bytesFreed);
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void deletePath(const Path& path, unsigned long long& bytesFreed);
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/* Create a temporary directory. */
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Path createTempDir(const Path & tmpRoot = "", const Path & prefix = "nix",
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bool includePid = true, bool useGlobalCounter = true, mode_t mode = 0755);
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Path createTempDir(const Path& tmpRoot = "", const Path& prefix = "nix",
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bool includePid = true, bool useGlobalCounter = true,
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mode_t mode = 0755);
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std::string getUserName();
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@ -145,178 +141,161 @@ Path getDataDir();
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/* Create a directory and all its parents, if necessary. Returns the
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list of created directories, in order of creation. */
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Paths createDirs(const Path & path);
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Paths createDirs(const Path& path);
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/* Create a symlink. */
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void createSymlink(const Path & target, const Path & link);
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void createSymlink(const Path& target, const Path& link);
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/* Atomically create or replace a symlink. */
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void replaceSymlink(const Path & target, const Path & link);
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void replaceSymlink(const Path& target, const Path& link);
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/* Wrappers arount read()/write() that read/write exactly the
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requested number of bytes. */
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void readFull(int fd, unsigned char * buf, size_t count);
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void writeFull(int fd, const unsigned char * buf, size_t count, bool allowInterrupts = true);
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void writeFull(int fd, const string & s, bool allowInterrupts = true);
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void readFull(int fd, unsigned char* buf, size_t count);
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void writeFull(int fd, const unsigned char* buf, size_t count,
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bool allowInterrupts = true);
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void writeFull(int fd, const string& s, bool allowInterrupts = true);
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MakeError(EndOfFile, Error)
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/* Read a file descriptor until EOF occurs. */
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string drainFD(int fd, bool block = true);
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/* Read a file descriptor until EOF occurs. */
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string drainFD(int fd, bool block = true);
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void drainFD(int fd, Sink & sink, bool block = true);
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void drainFD(int fd, Sink& sink, bool block = true);
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/* Automatic cleanup of resources. */
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class AutoDelete {
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Path path;
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bool del;
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bool recursive;
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class AutoDelete
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{
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Path path;
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bool del;
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bool recursive;
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public:
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AutoDelete();
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AutoDelete(const Path & p, bool recursive = true);
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~AutoDelete();
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void cancel();
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void reset(const Path & p, bool recursive = true);
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operator Path() const { return path; }
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public:
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AutoDelete();
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AutoDelete(const Path& p, bool recursive = true);
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~AutoDelete();
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void cancel();
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void reset(const Path& p, bool recursive = true);
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operator Path() const { return path; }
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};
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class AutoCloseFD {
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int fd;
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void close();
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class AutoCloseFD
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{
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int fd;
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void close();
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public:
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AutoCloseFD();
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AutoCloseFD(int fd);
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AutoCloseFD(const AutoCloseFD & fd) = delete;
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AutoCloseFD(AutoCloseFD&& fd);
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~AutoCloseFD();
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AutoCloseFD& operator =(const AutoCloseFD & fd) = delete;
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AutoCloseFD& operator =(AutoCloseFD&& fd);
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int get() const;
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explicit operator bool() const;
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int release();
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public:
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AutoCloseFD();
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AutoCloseFD(int fd);
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AutoCloseFD(const AutoCloseFD& fd) = delete;
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AutoCloseFD(AutoCloseFD&& fd);
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~AutoCloseFD();
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AutoCloseFD& operator=(const AutoCloseFD& fd) = delete;
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AutoCloseFD& operator=(AutoCloseFD&& fd);
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int get() const;
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explicit operator bool() const;
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int release();
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};
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class Pipe
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{
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public:
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AutoCloseFD readSide, writeSide;
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void create();
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class Pipe {
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public:
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AutoCloseFD readSide, writeSide;
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void create();
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};
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struct DIRDeleter
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{
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void operator()(DIR * dir) const {
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closedir(dir);
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}
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struct DIRDeleter {
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void operator()(DIR* dir) const { closedir(dir); }
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};
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typedef std::unique_ptr<DIR, DIRDeleter> AutoCloseDir;
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class Pid {
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pid_t pid = -1;
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bool separatePG = false;
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int killSignal = SIGKILL;
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class Pid
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{
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pid_t pid = -1;
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bool separatePG = false;
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int killSignal = SIGKILL;
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public:
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Pid();
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Pid(pid_t pid);
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~Pid();
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void operator =(pid_t pid);
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operator pid_t();
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int kill();
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int wait();
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public:
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Pid();
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Pid(pid_t pid);
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~Pid();
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void operator=(pid_t pid);
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operator pid_t();
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int kill();
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int wait();
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void setSeparatePG(bool separatePG);
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void setKillSignal(int signal);
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pid_t release();
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void setSeparatePG(bool separatePG);
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void setKillSignal(int signal);
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pid_t release();
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};
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/* Kill all processes running under the specified uid by sending them
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a SIGKILL. */
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void killUser(uid_t uid);
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/* Fork a process that runs the given function, and return the child
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pid to the caller. */
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struct ProcessOptions
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{
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string errorPrefix = "error: ";
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bool dieWithParent = true;
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bool runExitHandlers = false;
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bool allowVfork = true;
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struct ProcessOptions {
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string errorPrefix = "error: ";
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bool dieWithParent = true;
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bool runExitHandlers = false;
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bool allowVfork = true;
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};
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pid_t startProcess(std::function<void()> fun, const ProcessOptions & options = ProcessOptions());
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pid_t startProcess(std::function<void()> fun,
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const ProcessOptions& options = ProcessOptions());
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/* Run a program and return its stdout in a string (i.e., like the
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shell backtick operator). */
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string runProgram(Path program, bool searchPath = false,
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const Strings & args = Strings(),
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const std::optional<std::string> & input = {});
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const Strings& args = Strings(),
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const std::optional<std::string>& input = {});
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struct RunOptions
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{
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std::optional<uid_t> uid;
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std::optional<uid_t> gid;
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std::optional<Path> chdir;
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std::optional<std::map<std::string, std::string>> environment;
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Path program;
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bool searchPath = true;
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Strings args;
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std::optional<std::string> input;
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Source * standardIn = nullptr;
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Sink * standardOut = nullptr;
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bool mergeStderrToStdout = false;
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bool _killStderr = false;
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struct RunOptions {
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std::optional<uid_t> uid;
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std::optional<uid_t> gid;
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std::optional<Path> chdir;
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std::optional<std::map<std::string, std::string>> environment;
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Path program;
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bool searchPath = true;
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Strings args;
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std::optional<std::string> input;
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Source* standardIn = nullptr;
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Sink* standardOut = nullptr;
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bool mergeStderrToStdout = false;
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bool _killStderr = false;
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RunOptions(const Path & program, const Strings & args)
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: program(program), args(args) { };
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RunOptions(const Path& program, const Strings& args)
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: program(program), args(args){};
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RunOptions & killStderr(bool v) { _killStderr = true; return *this; }
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RunOptions& killStderr(bool v) {
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_killStderr = true;
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return *this;
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}
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};
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std::pair<int, std::string> runProgram(const RunOptions & options);
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std::pair<int, std::string> runProgram(const RunOptions& options);
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void runProgram2(const RunOptions & options);
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void runProgram2(const RunOptions& options);
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class ExecError : public Error {
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public:
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int status;
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class ExecError : public Error
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{
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public:
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int status;
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template<typename... Args>
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ExecError(int status, Args... args)
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: Error(args...), status(status)
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{ }
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template <typename... Args>
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ExecError(int status, Args... args) : Error(args...), status(status) {}
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};
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/* Convert a list of strings to a null-terminated vector of char
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*'s. The result must not be accessed beyond the lifetime of the
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list of strings. */
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std::vector<char *> stringsToCharPtrs(const Strings & ss);
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std::vector<char*> stringsToCharPtrs(const Strings& ss);
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/* Close all file descriptors except those listed in the given set.
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Good practice in child processes. */
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void closeMostFDs(const set<int> & exceptions);
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void closeMostFDs(const set<int>& exceptions);
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/* Set the close-on-exec flag for the given file descriptor. */
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void closeOnExec(int fd);
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/* User interruption. */
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extern bool _isInterrupted;
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@ -327,40 +306,32 @@ void setInterruptThrown();
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void _interrupted();
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void inline checkInterrupt()
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{
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if (_isInterrupted || (interruptCheck && interruptCheck()))
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_interrupted();
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void inline checkInterrupt() {
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if (_isInterrupted || (interruptCheck && interruptCheck())) _interrupted();
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}
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MakeError(Interrupted, BaseError)
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MakeError(FormatError, Error)
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MakeError(FormatError, Error)
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|
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|
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/* String tokenizer. */
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template<class C> C tokenizeString(const string & s, const string & separators = " \t\n\r");
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|
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/* String tokenizer. */
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template <class C>
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C tokenizeString(const string& s, const string& separators = " \t\n\r");
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|
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/* Concatenate the given strings with a separator between the
|
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elements. */
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string concatStringsSep(const string & sep, const Strings & ss);
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string concatStringsSep(const string & sep, const StringSet & ss);
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string concatStringsSep(const string& sep, const Strings& ss);
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string concatStringsSep(const string& sep, const StringSet& ss);
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|
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/* Remove trailing whitespace from a string. */
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string chomp(const string & s);
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|
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string chomp(const string& s);
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|
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/* Remove whitespace from the start and end of a string. */
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string trim(const string & s, const string & whitespace = " \n\r\t");
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|
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string trim(const string& s, const string& whitespace = " \n\r\t");
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|
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/* Replace all occurrences of a string inside another string. */
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string replaceStrings(const std::string & s,
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const std::string & from, const std::string & to);
|
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|
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string replaceStrings(const std::string& s, const std::string& from,
|
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const std::string& to);
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|
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/* Convert the exit status of a child as returned by wait() into an
|
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error string. */
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|
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@ -368,47 +339,40 @@ string statusToString(int status);
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|
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bool statusOk(int status);
|
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|
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|
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/* Parse a string into an integer. */
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template<class N> bool string2Int(const string & s, N & n)
|
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{
|
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if (string(s, 0, 1) == "-" && !std::numeric_limits<N>::is_signed)
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return false;
|
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std::istringstream str(s);
|
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str >> n;
|
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return str && str.get() == EOF;
|
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template <class N>
|
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bool string2Int(const string& s, N& n) {
|
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if (string(s, 0, 1) == "-" && !std::numeric_limits<N>::is_signed)
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return false;
|
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std::istringstream str(s);
|
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str >> n;
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return str && str.get() == EOF;
|
||||
}
|
||||
|
||||
/* Parse a string into a float. */
|
||||
template<class N> bool string2Float(const string & s, N & n)
|
||||
{
|
||||
std::istringstream str(s);
|
||||
str >> n;
|
||||
return str && str.get() == EOF;
|
||||
template <class N>
|
||||
bool string2Float(const string& s, N& n) {
|
||||
std::istringstream str(s);
|
||||
str >> n;
|
||||
return str && str.get() == EOF;
|
||||
}
|
||||
|
||||
|
||||
/* Return true iff `s' starts with `prefix'. */
|
||||
bool hasPrefix(const string & s, const string & prefix);
|
||||
|
||||
bool hasPrefix(const string& s, const string& prefix);
|
||||
|
||||
/* Return true iff `s' ends in `suffix'. */
|
||||
bool hasSuffix(const string & s, const string & suffix);
|
||||
|
||||
bool hasSuffix(const string& s, const string& suffix);
|
||||
|
||||
/* Convert a string to lower case. */
|
||||
std::string toLower(const std::string & s);
|
||||
|
||||
std::string toLower(const std::string& s);
|
||||
|
||||
/* Escape a string as a shell word. */
|
||||
std::string shellEscape(const std::string & s);
|
||||
|
||||
std::string shellEscape(const std::string& s);
|
||||
|
||||
/* Exception handling in destructors: print an error message, then
|
||||
ignore the exception. */
|
||||
void ignoreException();
|
||||
|
||||
|
||||
/* Some ANSI escape sequences. */
|
||||
#define ANSI_NORMAL "\e[0m"
|
||||
#define ANSI_BOLD "\e[1m"
|
||||
|
|
@ -417,71 +381,61 @@ void ignoreException();
|
|||
#define ANSI_GREEN "\e[32;1m"
|
||||
#define ANSI_BLUE "\e[34;1m"
|
||||
|
||||
|
||||
/* Truncate a string to 'width' printable characters. If 'filterAll'
|
||||
is true, all ANSI escape sequences are filtered out. Otherwise,
|
||||
some escape sequences (such as colour setting) are copied but not
|
||||
included in the character count. Also, tabs are expanded to
|
||||
spaces. */
|
||||
std::string filterANSIEscapes(const std::string & s,
|
||||
bool filterAll = false,
|
||||
std::string filterANSIEscapes(
|
||||
const std::string& s, bool filterAll = false,
|
||||
unsigned int width = std::numeric_limits<unsigned int>::max());
|
||||
|
||||
|
||||
/* Base64 encoding/decoding. */
|
||||
string base64Encode(const string & s);
|
||||
string base64Decode(const string & s);
|
||||
|
||||
string base64Encode(const string& s);
|
||||
string base64Decode(const string& s);
|
||||
|
||||
/* Get a value for the specified key from an associate container, or a
|
||||
default value if the key doesn't exist. */
|
||||
template <class T>
|
||||
string get(const T & map, const string & key, const string & def = "")
|
||||
{
|
||||
auto i = map.find(key);
|
||||
return i == map.end() ? def : i->second;
|
||||
string get(const T& map, const string& key, const string& def = "") {
|
||||
auto i = map.find(key);
|
||||
return i == map.end() ? def : i->second;
|
||||
}
|
||||
|
||||
|
||||
/* A callback is a wrapper around a lambda that accepts a valid of
|
||||
type T or an exception. (We abuse std::future<T> to pass the value or
|
||||
exception.) */
|
||||
template<typename T>
|
||||
class Callback
|
||||
{
|
||||
std::function<void(std::future<T>)> fun;
|
||||
std::atomic_flag done = ATOMIC_FLAG_INIT;
|
||||
template <typename T>
|
||||
class Callback {
|
||||
std::function<void(std::future<T>)> fun;
|
||||
std::atomic_flag done = ATOMIC_FLAG_INIT;
|
||||
|
||||
public:
|
||||
public:
|
||||
Callback(std::function<void(std::future<T>)> fun) : fun(fun) {}
|
||||
|
||||
Callback(std::function<void(std::future<T>)> fun) : fun(fun) { }
|
||||
Callback(Callback&& callback) : fun(std::move(callback.fun)) {
|
||||
auto prev = callback.done.test_and_set();
|
||||
if (prev) done.test_and_set();
|
||||
}
|
||||
|
||||
Callback(Callback && callback) : fun(std::move(callback.fun))
|
||||
{
|
||||
auto prev = callback.done.test_and_set();
|
||||
if (prev) done.test_and_set();
|
||||
}
|
||||
void operator()(T&& t) noexcept {
|
||||
auto prev = done.test_and_set();
|
||||
assert(!prev);
|
||||
std::promise<T> promise;
|
||||
promise.set_value(std::move(t));
|
||||
fun(promise.get_future());
|
||||
}
|
||||
|
||||
void operator()(T && t) noexcept
|
||||
{
|
||||
auto prev = done.test_and_set();
|
||||
assert(!prev);
|
||||
std::promise<T> promise;
|
||||
promise.set_value(std::move(t));
|
||||
fun(promise.get_future());
|
||||
}
|
||||
|
||||
void rethrow(const std::exception_ptr & exc = std::current_exception()) noexcept
|
||||
{
|
||||
auto prev = done.test_and_set();
|
||||
assert(!prev);
|
||||
std::promise<T> promise;
|
||||
promise.set_exception(exc);
|
||||
fun(promise.get_future());
|
||||
}
|
||||
void rethrow(
|
||||
const std::exception_ptr& exc = std::current_exception()) noexcept {
|
||||
auto prev = done.test_and_set();
|
||||
assert(!prev);
|
||||
std::promise<T> promise;
|
||||
promise.set_exception(exc);
|
||||
fun(promise.get_future());
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/* Start a thread that handles various signals. Also block those signals
|
||||
on the current thread (and thus any threads created by it). */
|
||||
void startSignalHandlerThread();
|
||||
|
|
@ -489,9 +443,8 @@ void startSignalHandlerThread();
|
|||
/* Restore default signal handling. */
|
||||
void restoreSignals();
|
||||
|
||||
struct InterruptCallback
|
||||
{
|
||||
virtual ~InterruptCallback() { };
|
||||
struct InterruptCallback {
|
||||
virtual ~InterruptCallback(){};
|
||||
};
|
||||
|
||||
/* Register a function that gets called on SIGINT (in a non-signal
|
||||
|
|
@ -504,39 +457,34 @@ void triggerInterrupt();
|
|||
/* A RAII class that causes the current thread to receive SIGUSR1 when
|
||||
the signal handler thread receives SIGINT. That is, this allows
|
||||
SIGINT to be multiplexed to multiple threads. */
|
||||
struct ReceiveInterrupts
|
||||
{
|
||||
pthread_t target;
|
||||
std::unique_ptr<InterruptCallback> callback;
|
||||
struct ReceiveInterrupts {
|
||||
pthread_t target;
|
||||
std::unique_ptr<InterruptCallback> callback;
|
||||
|
||||
ReceiveInterrupts()
|
||||
: target(pthread_self())
|
||||
, callback(createInterruptCallback([&]() { pthread_kill(target, SIGUSR1); }))
|
||||
{ }
|
||||
ReceiveInterrupts()
|
||||
: target(pthread_self()), callback(createInterruptCallback([&]() {
|
||||
pthread_kill(target, SIGUSR1);
|
||||
})) {}
|
||||
};
|
||||
|
||||
|
||||
|
||||
/* A RAII helper that increments a counter on construction and
|
||||
decrements it on destruction. */
|
||||
template<typename T>
|
||||
struct MaintainCount
|
||||
{
|
||||
T & counter;
|
||||
long delta;
|
||||
MaintainCount(T & counter, long delta = 1) : counter(counter), delta(delta) { counter += delta; }
|
||||
~MaintainCount() { counter -= delta; }
|
||||
template <typename T>
|
||||
struct MaintainCount {
|
||||
T& counter;
|
||||
long delta;
|
||||
MaintainCount(T& counter, long delta = 1) : counter(counter), delta(delta) {
|
||||
counter += delta;
|
||||
}
|
||||
~MaintainCount() { counter -= delta; }
|
||||
};
|
||||
|
||||
|
||||
/* Return the number of rows and columns of the terminal. */
|
||||
std::pair<unsigned short, unsigned short> getWindowSize();
|
||||
|
||||
|
||||
/* Used in various places. */
|
||||
typedef std::function<bool(const Path & path)> PathFilter;
|
||||
typedef std::function<bool(const Path& path)> PathFilter;
|
||||
|
||||
extern PathFilter defaultPathFilter;
|
||||
|
||||
|
||||
}
|
||||
} // namespace nix
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue