#ifndef __UTIL_H #define __UTIL_H #include <string> #include <list> #include <set> #include <sstream> #include <unistd.h> #include <boost/format.hpp> using namespace std; using namespace boost; class Error : public exception { protected: string err; public: Error(const format & f); ~Error() throw () { }; const char * what() const throw () { return err.c_str(); } const string & msg() const throw () { return err; } }; class SysError : public Error { public: SysError(const format & f); }; class UsageError : public Error { public: UsageError(const format & f) : Error(f) { }; }; typedef list<string> Strings; typedef set<string> StringSet; /* Paths are just strings. */ typedef string Path; typedef list<Path> Paths; typedef set<Path> PathSet; /* The canonical system name, as returned by config.guess. */ extern string thisSystem; /* Return an absolutized path, resolving paths relative to the specified directory, or the current directory otherwise. The path is also canonicalised. */ Path absPath(Path path, Path dir = ""); /* Canonicalise a path (as in realpath(3)). */ Path canonPath(const Path & path); /* Return the directory part of the given path, i.e., everything before the final `/'. */ Path dirOf(const Path & path); /* Return the base name of the given path, i.e., everything following the final `/'. */ string baseNameOf(const Path & path); /* Return true iff the given path exists. */ bool pathExists(const Path & path); /* Delete a path; i.e., in the case of a directory, it is deleted recursively. Don't use this at home, kids. */ void deletePath(const Path & path); /* Make a path read-only recursively. */ void makePathReadOnly(const Path & path); /* Create a temporary directory. */ Path createTempDir(); /* Messages. */ typedef enum { lvlError, lvlTalkative, lvlChatty, lvlDebug, lvlVomit } Verbosity; extern Verbosity verbosity; /* supress msgs > this */ class Nest { private: bool nest; public: Nest(Verbosity level, const format & f); ~Nest(); }; void msg(Verbosity level, const format & f); void debug(const format & f); /* short-hand for msg(lvlDebug, ...) */ /* Wrappers arount read()/write() that read/write exactly the requested number of bytes. */ void readFull(int fd, unsigned char * buf, size_t count); void writeFull(int fd, const unsigned char * buf, size_t count); #endif /* !__UTIL_H */