117 lines
2.2 KiB
C++
117 lines
2.2 KiB
C++
#include <iostream>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <dirent.h>
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#include "util.hh"
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string thisSystem = SYSTEM;
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Error::Error(const format & f)
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{
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err = f.str();
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}
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SysError::SysError(const format & f)
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: Error(format("%1%: %2%") % f.str() % strerror(errno))
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{
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}
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string absPath(string path, string dir)
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{
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if (path[0] != '/') {
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if (dir == "") {
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char buf[PATH_MAX];
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if (!getcwd(buf, sizeof(buf)))
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throw SysError("cannot get cwd");
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dir = buf;
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}
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path = dir + "/" + path;
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/* !!! canonicalise */
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char resolved[PATH_MAX];
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if (!realpath(path.c_str(), resolved))
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throw SysError(format("cannot canonicalise path %1%") % path);
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path = resolved;
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}
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return path;
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}
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string dirOf(string path)
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{
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unsigned int pos = path.rfind('/');
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if (pos == string::npos)
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throw Error(format("invalid file name: %1%") % path);
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return string(path, 0, pos);
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}
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string baseNameOf(string path)
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{
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unsigned int pos = path.rfind('/');
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if (pos == string::npos)
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throw Error(format("invalid file name %1% ") % path);
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return string(path, pos + 1);
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}
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void deletePath(string path)
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{
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struct stat st;
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if (lstat(path.c_str(), &st))
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throw SysError(format("getting attributes of path %1%") % path);
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if (S_ISDIR(st.st_mode)) {
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DIR * dir = opendir(path.c_str());
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struct dirent * dirent;
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while (errno = 0, dirent = readdir(dir)) {
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string name = dirent->d_name;
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if (name == "." || name == "..") continue;
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deletePath(path + "/" + name);
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}
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closedir(dir); /* !!! close on exception */
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}
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if (remove(path.c_str()) == -1)
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throw SysError(format("cannot unlink %1%") % path);
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}
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static int nestingLevel = 0;
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Nest::Nest(bool nest)
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{
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this->nest = nest;
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if (nest) nestingLevel++;
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}
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Nest::~Nest()
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{
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if (nest) nestingLevel--;
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}
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void msg(const format & f)
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{
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string spaces;
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for (int i = 0; i < nestingLevel; i++)
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spaces += " ";
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cerr << format("%1%%2%\n") % spaces % f.str();
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}
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void debug(const format & f)
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{
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msg(format("debug: %1%") % f.str());
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}
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