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96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
// Implementation of the cd builtin.
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#include "config.h" // IWYU pragma: keep
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#include <errno.h>
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#include <sys/stat.h>
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#include "builtin.h"
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#include "builtin_cd.h"
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#include "common.h"
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#include "env.h"
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#include "fallback.h" // IWYU pragma: keep
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#include "io.h"
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#include "parser.h"
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#include "path.h"
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#include "proc.h"
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#include "wutil.h" // IWYU pragma: keep
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/// The cd builtin. Changes the current directory to the one specified or to $HOME if none is
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/// specified. The directory can be relative to any directory in the CDPATH variable.
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/// The cd builtin. Changes the current directory to the one specified or to $HOME if none is
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/// specified. The directory can be relative to any directory in the CDPATH variable.
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int builtin_cd(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
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const wchar_t *cmd = argv[0];
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int argc = builtin_count_args(argv);
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help_only_cmd_opts_t opts;
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int optind;
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int retval = parse_help_only_cmd_opts(opts, &optind, argc, argv, parser, streams);
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if (retval != STATUS_CMD_OK) return retval;
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if (opts.print_help) {
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builtin_print_help(parser, streams, cmd, streams.out);
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return STATUS_CMD_OK;
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}
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env_var_t dir_in;
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wcstring dir;
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if (argv[optind]) {
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dir_in = env_var_t(wcstring(argv[optind]), 0); // unamed var
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} else {
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auto maybe_dir_in = env_get(L"HOME");
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if (maybe_dir_in.missing_or_empty()) {
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streams.err.append_format(_(L"%ls: Could not find home directory\n"), cmd);
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return STATUS_CMD_ERROR;
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}
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dir_in = std::move(*maybe_dir_in);
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}
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if (!path_get_cdpath(dir_in, &dir)) {
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if (errno == ENOTDIR) {
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streams.err.append_format(_(L"%ls: '%ls' is not a directory\n"), cmd,
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dir_in.as_string().c_str());
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} else if (errno == ENOENT) {
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streams.err.append_format(_(L"%ls: The directory '%ls' does not exist\n"), cmd,
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dir_in.as_string().c_str());
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} else if (errno == EROTTEN) {
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streams.err.append_format(_(L"%ls: '%ls' is a rotten symlink\n"), cmd,
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dir_in.as_string().c_str());
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} else {
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streams.err.append_format(_(L"%ls: Unknown error trying to locate directory '%ls'\n"),
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cmd, dir_in.as_string().c_str());
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}
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if (!shell_is_interactive()) streams.err.append(parser.current_line());
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return STATUS_CMD_ERROR;
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}
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if (wchdir(dir) != 0) {
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struct stat buffer;
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int status;
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status = wstat(dir, &buffer);
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if (!status && S_ISDIR(buffer.st_mode)) {
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streams.err.append_format(_(L"%ls: Permission denied: '%ls'\n"), cmd, dir.c_str());
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} else {
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streams.err.append_format(_(L"%ls: '%ls' is not a directory\n"), cmd, dir.c_str());
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}
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if (!shell_is_interactive()) {
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streams.err.append(parser.current_line());
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}
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return STATUS_CMD_ERROR;
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}
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if (!env_set_pwd()) {
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streams.err.append_format(_(L"%ls: Could not set PWD variable\n"), cmd);
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return STATUS_CMD_ERROR;
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}
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return STATUS_CMD_OK;
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}
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