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Shell: Remember previous working dir

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...and allow switching back to it with `cd -`

Partially addresses #397
This commit is contained in:
Tim Morgan 2019-09-11 20:46:38 -05:00 committed by Andreas Kling
parent ad75b61eca
commit 093961d2d9
Notes: sideshowbarker 2024-07-19 12:08:21 +09:00 
Author: https://github.com/seven1m
Commit: https://github.com/SerenityOS/serenity/commit/093961d2d93
Pull-request: https://github.com/SerenityOS/serenity/pull/549
1 changed files with 11 additions and 2 deletions
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13
Shell/main.cpp
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@ -83,10 +83,16 @@ static int sh_cd(int argc, char** argv)
if (argc == 1) {
strcpy(pathbuf, g.home.characters());
} else {
if (argv[1][0] == '/')
if (strcmp(argv[1], "-") == 0) {
char* oldpwd = getenv("OLDPWD");
size_t len = strlen(oldpwd);
ASSERT(len + 1 <= PATH_MAX);
memcpy(pathbuf, oldpwd, len + 1);
} else if (argv[1][0] == '/') {
memcpy(pathbuf, argv[1], strlen(argv[1]) + 1);
else
} else {
sprintf(pathbuf, "%s/%s", g.cwd.characters(), argv[1]);
}
}
FileSystemPath canonical_path(pathbuf);
@ -111,7 +117,9 @@ static int sh_cd(int argc, char** argv)
printf("chdir(%s) failed: %s\n", path, strerror(errno));
return 1;
}
setenv("OLDPWD", g.cwd.characters(), 1);
g.cwd = canonical_path.string();
setenv("PWD", g.cwd.characters(), 1);
return 0;
}
@ -635,6 +643,7 @@ int main(int argc, char** argv)
{
auto* cwd = getcwd(nullptr, 0);
g.cwd = cwd;
setenv("PWD", cwd, 1);
free(cwd);
}