48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
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#include "util.hh"
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string thisSystem = SYSTEM;
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string nixHomeDir = "/nix";
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string nixHomeDirEnvVar = "NIX";
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string absPath(string filename, string dir)
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{
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if (filename[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 Error("cannot get cwd");
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dir = buf;
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}
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filename = dir + "/" + filename;
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/* !!! canonicalise */
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char resolved[PATH_MAX];
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if (!realpath(filename.c_str(), resolved))
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throw Error("cannot canonicalise path " + filename);
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filename = resolved;
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}
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return filename;
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}
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/* Return the directory part of the given path, i.e., everything
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before the final `/'. */
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string dirOf(string s)
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{
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unsigned int pos = s.rfind('/');
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if (pos == string::npos) throw Error("invalid file name");
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return string(s, 0, pos);
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}
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/* Return the base name of the given path, i.e., everything following
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the final `/'. */
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string baseNameOf(string s)
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{
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unsigned int pos = s.rfind('/');
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if (pos == string::npos) throw Error("invalid file name");
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return string(s, pos + 1);
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}
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