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https://github.com/fish-shell/fish-shell.git
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d17f2585fa
The use of wcstoimax causes certain out-of-range values
to be silently truncated (e.g. when converted to a pid),
and is incompatible with FreeBSD (see #626)
This reverts commit 6faa2f9866
.
153 lines
5.1 KiB
C++
153 lines
5.1 KiB
C++
// Prototypes for wide character equivalents of various standard unix functions.
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#ifndef FISH_WUTIL_H
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#define FISH_WUTIL_H
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#include <dirent.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <time.h>
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#include <string>
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#include "common.h"
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/// Wide character version of fopen(). This sets CLO_EXEC.
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FILE *wfopen(const wcstring &path, const char *mode);
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/// Sets CLO_EXEC on a given fd.
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bool set_cloexec(int fd);
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/// Wide character version of open() that also sets the close-on-exec flag (atomically when
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/// possible).
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int wopen_cloexec(const wcstring &pathname, int flags, mode_t mode = 0);
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/// Mark an fd as nonblocking; returns errno or 0 on success.
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int make_fd_nonblocking(int fd);
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/// Mark an fd as blocking; returns errno or 0 on success.
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int make_fd_blocking(int fd);
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/// Wide character version of opendir(). Note that opendir() is guaranteed to set close-on-exec by
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/// POSIX (hooray).
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DIR *wopendir(const wcstring &name);
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/// Wide character version of stat().
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int wstat(const wcstring &file_name, struct stat *buf);
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/// Wide character version of lstat().
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int lwstat(const wcstring &file_name, struct stat *buf);
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/// Wide character version of access().
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int waccess(const wcstring &pathname, int mode);
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/// Wide character version of unlink().
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int wunlink(const wcstring &pathname);
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/// Wide character version of perror().
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void wperror(const wchar_t *s);
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/// Async-safe version of perror().
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void safe_perror(const char *message);
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/// Async-safe version of strerror().
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const char *safe_strerror(int err);
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/// Wide character version of getcwd().
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const wcstring wgetcwd();
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/// Wide character version of chdir().
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int wchdir(const wcstring &dir);
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/// Wide character version of realpath function. Just like the GNU version of realpath, wrealpath
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/// will accept 0 as the value for the second argument, in which case the result will be allocated
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/// using malloc, and must be free'd by the user.
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wchar_t *wrealpath(const wcstring &pathname, wchar_t *resolved_path);
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/// Wide character version of readdir().
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bool wreaddir(DIR *dir, std::wstring &out_name);
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bool wreaddir_resolving(DIR *dir, const std::wstring &dir_path, std::wstring &out_name,
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bool *out_is_dir);
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/// Like wreaddir, but skip items that are known to not be directories. If this requires a stat
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/// (i.e. the file is a symlink), then return it. Note that this does not guarantee that everything
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/// returned is a directory, it's just an optimization for cases where we would check for
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/// directories anyways.
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bool wreaddir_for_dirs(DIR *dir, wcstring *out_name);
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/// Wide character version of dirname().
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std::wstring wdirname(const std::wstring &path);
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/// Wide character version of basename().
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std::wstring wbasename(const std::wstring &path);
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/// Wide character wrapper around the gettext function. For historic reasons, unlike the real
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/// gettext function, wgettext takes care of setting the correct domain, etc. using the textdomain
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/// and bindtextdomain functions. This should probably be moved out of wgettext, so that wgettext
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/// will be nothing more than a wrapper around gettext, like all other functions in this file.
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const wcstring &wgettext(const wchar_t *in);
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/// Wide character version of mkdir.
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int wmkdir(const wcstring &dir, int mode);
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/// Wide character version of rename.
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int wrename(const wcstring &oldName, const wcstring &newName);
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#define PUA1_START 0xE000
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#define PUA1_END 0xF900
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#define PUA2_START 0xF0000
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#define PUA2_END 0xFFFFE
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#define PUA3_START 0x100000
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#define PUA3_END 0x10FFFE
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// We need this because there are too many implementations that don't return the proper answer for
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// some code points. See issue #3050.
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#ifndef FISH_NO_ISW_WRAPPERS
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#define iswalnum fish_iswalnum
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#define iswalpha fish_iswalpha
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#define iswgraph fish_iswgraph
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#endif
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int fish_iswalnum(wint_t wc);
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int fish_iswalpha(wint_t wc);
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int fish_iswgraph(wint_t wc);
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const wchar_t *wcsvarname(const wchar_t *str);
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const wchar_t *wcsvarname(const wcstring &str);
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const wchar_t *wcsfuncname(const wcstring &str);
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bool wcsvarchr(wchar_t chr);
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int fish_wcswidth(const wchar_t *str);
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int fish_wcswidth(const wcstring &str);
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/// Like wcstol(), but fails on a value outside the range of an int.
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int fish_wcstoi(const wchar_t *str, wchar_t **endptr, int base);
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/// Class for representing a file's inode. We use this to detect and avoid symlink loops, among
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/// other things. While an inode / dev pair is sufficient to distinguish co-existing files, Linux
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/// seems to aggressively re-use inodes, so it cannot determine if a file has been deleted (ABA
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/// problem). Therefore we include richer information.
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struct file_id_t {
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dev_t device;
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ino_t inode;
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uint64_t size;
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time_t change_seconds;
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long change_nanoseconds;
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time_t mod_seconds;
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long mod_nanoseconds;
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bool operator==(const file_id_t &rhs) const;
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bool operator!=(const file_id_t &rhs) const;
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// Used to permit these as keys in std::map.
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bool operator<(const file_id_t &rhs) const;
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static file_id_t file_id_from_stat(const struct stat *buf);
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private:
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int compare_file_id(const file_id_t &rhs) const;
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};
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file_id_t file_id_for_fd(int fd);
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file_id_t file_id_for_path(const wcstring &path);
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extern const file_id_t kInvalidFileID;
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#endif
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