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/*
* HT Editor
* file.h
*
* File system functions
*
* Copyright (C) 1999-2004 Stefan Weyergraf (stefan@weyergraf.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __FILE_H__
#define __FILE_H__
/* Note: all functions only take absolute dir/filenames ! */
#include "types.h"
#include "fileofs.h"
#include <dirent.h>
#include <sys/types.h>
#include <time.h>
#ifdef PATH_MAX
#define HT_NAME_MAX PATH_MAX /* DJGPP at least */
#else
#ifdef MAXNAMLEN
#define HT_NAME_MAX MAXNAMLEN /* some BSD... */
#else
#ifdef NAME_MAX
#define HT_NAME_MAX NAME_MAX /* POSIX and friends... */
#else
#define HT_NAME_MAX 260 /* unknown... */
#endif
#endif
#endif
#define HT_S_IFREG 0x1000
#define HT_S_IFBLK 0x2000
#define HT_S_IFCHR 0x3000
#define HT_S_IFDIR 0x4000
#define HT_S_IFFIFO 0x5000
#define HT_S_IFLNK 0x6000
#define HT_S_IFSOCK 0x7000
#define HT_S_IFMT 0xf000
#define HT_S_ISREG(m) (((m) & HT_S_IFMT) == HT_S_IFREG)
#define HT_S_ISBLK(m) (((m) & HT_S_IFMT) == HT_S_IFBLK)
#define HT_S_ISCHR(m) (((m) & HT_S_IFMT) == HT_S_IFCHR)
#define HT_S_ISDIR(m) (((m) & HT_S_IFMT) == HT_S_IFDIR)
#define HT_S_ISFIFO(m) (((m) & HT_S_IFMT) == HT_S_IFFIFO)
#define HT_S_ISLNK(m) (((m) & HT_S_IFMT) == HT_S_IFLNK)
#define HT_S_ISSOCK(m) (((m) & HT_S_IFMT) == HT_S_IFSOCK)
#define HT_S_IRUSR 0x0100
#define HT_S_IRGRP 0x0020
#define HT_S_IROTH 0x0004
#define HT_S_IWUSR 0x0080
#define HT_S_IWGRP 0x0010
#define HT_S_IWOTH 0x0002
#define HT_S_IXUSR 0x0040
#define HT_S_IXGRP 0x0008
#define HT_S_IXOTH 0x0001
#define HT_S_IRWXU (HT_S_IRUSR || HT_S_IWUSR || HT_S_IXUSR)
#define HT_S_IRWXG (HT_S_IRGRP || HT_S_IWGRP || HT_S_IXGRP)
#define HT_S_IRWXO (HT_S_IROTH || HT_S_IWOTH || HT_S_IXOTH)
#define pstat_ctime 0x00000001
#define pstat_mtime 0x00000002
#define pstat_atime 0x00000004
#define pstat_uid 0x00000008
#define pstat_gid 0x00000010
#define pstat_mode_usr 0x00000020
#define pstat_mode_grp 0x00000040
#define pstat_mode_oth 0x00000080
#define pstat_mode_r 0x00000100
#define pstat_mode_w 0x00000200
#define pstat_mode_x 0x00000400
#define pstat_mode_type 0x00000800
#define pstat_size 0x00001000
#define pstat_inode 0x00002000
#define pstat_cluster 0x00004000
#define pstat_fsid 0x00008000
#define pstat_desc 0x00010000
#define pstat_mode_all (pstat_mode_usr|pstat_mode_grp|pstat_mode_oth|pstat_mode_r|pstat_mode_w|pstat_mode_x|pstat_mode_type)
struct pstat_t {
uint32 caps;
time_t ctime;
time_t mtime;
time_t atime;
uint uid;
uint gid;
mode_t mode; // S_ISUID, S_ISGID, S_I[RWX](USR|GRP|OTH)
uint64 size;
union {
uint inode;
uint cluster;
uint fsid;
};
char desc[32];
};
struct pfind_t {
const char *name;
pstat_t stat;
void *findstate;
};
typedef bool (*is_path_delim)(char c);
/* File open mode */
enum FileOpenMode {
FOM_EXISTS,
FOM_CREATE,
FOM_APPEND
};
/* Stream access mode */
enum IOAccessModeAtomic {
IOAM_NULL = 0,
IOAM_READ = 1,
IOAM_WRITE = 2
};
typedef uint IOAccessMode;
#define SYS_SEEK_SET 1
#define SYS_SEEK_REL 2
#define SYS_SEEK_END 3
// Add abstraction to files
#define SYS_FILE void
/* system-independant (implementation in sys.cc) */
int sys_file_mode(int mode);
int sys_basename(char *result, const char *filename);
char * sys_dirname(char *path);
char * sys_get_home_dir();
int sys_relname(char *result, const char *filename, const char *cwd);
int sys_common_canonicalize(char *result, const char *in_name, const char *cwd, is_path_delim delim);
char * sys_filename_suffix(const char *fn);
int sys_tmpfile_fd();
/* system-dependant (implementation in $MYSYSTEM/ *.cc) */
int sys_canonicalize(char **result, const char *filename);
int sys_findclose(pfind_t &pfind);
int sys_findfirst(pfind_t &pfind, const char *dirname);
int sys_findnext(pfind_t &pfind);
int sys_pstat(pstat_t &s, const char *filename);
int sys_pstat_fd(pstat_t &s, int fd);
int sys_pstat_file(pstat_t &s, SYS_FILE *file);
int sys_truncate(const char *filename, FileOfs ofs);
int sys_truncate_fd(int fd, FileOfs ofs);
int sys_deletefile(const char *filename);
bool sys_is_path_delim(char c);
int sys_filename_cmp(const char *a, const char *b);
bool sys_filename_is_absolute(const char *filename);
SYS_FILE * sys_fopen(const char *filename, FileOpenMode openmode, IOAccessMode accessmode);
SYS_FILE * sys_freopen(const char *filename, FileOpenMode openmode, IOAccessMode accessmode, SYS_FILE *file);
void sys_fclose(SYS_FILE *file);
int sys_fread(SYS_FILE *file, byte *buf, int size);
int sys_fwrite(SYS_FILE *file, byte *buf, int size);
int sys_fseek(SYS_FILE *file, FileOfs newofs, int seekmode = SYS_SEEK_SET);
FileOfs sys_ftell(SYS_FILE *file);
#endif /* __FILE_H__ */
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