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- /***********************************************************
- Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
- Amsterdam, The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior permission.
-
- STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
- THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
- FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* Operating system module implementation for MS-DOS */
- /* Tested with Microsoft C 7.0 (as part of MSVC++ Pro 1.0) */
-
- #include <dos.h>
-
- #include <stdlib.h>
- #include <signal.h>
- #include <string.h>
- #include <setjmp.h>
- #include <sys/types.h>
- #include <sys/stat.h>
-
- #include <direct.h> /* chdir(), mkdir(), rmdir(), getcwd() */
-
- #include "allobjects.h"
- #include "modsupport.h"
- #include "ceval.h"
-
-
- /* Return a dictionary corresponding to the DOS environment table */
-
- static object *
- convertenviron()
- {
- object *d;
- char **e;
- d = newdictobject();
- if (d == NULL)
- return NULL;
- if (environ == NULL)
- return d;
- /* XXX This part ignores errors */
- for (e = environ; *e != NULL; e++) {
- object *v;
- char *p = strchr(*e, '=');
- if (p == NULL)
- continue;
- v = newstringobject(p+1);
- if (v == NULL)
- continue;
- *p = '\0';
- (void) dictinsert(d, *e, v);
- *p = '=';
- DECREF(v);
- }
- return d;
- }
-
-
- static object *DosError; /* Exception dos.error */
-
- /* Set a DOS-specific error from errno, and return NULL */
-
- static object *
- dos_error()
- {
- return err_errno(DosError);
- }
-
-
- /* DOS generic methods */
-
- static object *
- dos_1str(args, func)
- object *args;
- int (*func) FPROTO((const char *));
- {
- char *path1;
- int res;
- if (!getargs(args, "s", &path1))
- return NULL;
- BGN_SAVE
- res = (*func)(path1);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- }
-
- static object *
- dos_2str(args, func)
- object *args;
- int (*func) FPROTO((const char *, const char *));
- {
- char *path1, *path2;
- int res;
- if (!getargs(args, "(ss)", &path1, &path2))
- return NULL;
- BGN_SAVE
- res = (*func)(path1, path2);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- }
-
- static object *
- dos_strint(args, func)
- object *args;
- int (*func) FPROTO((const char *, int));
- {
- char *path;
- int i;
- int res;
- if (!getargs(args, "(si)", &path, &i))
- return NULL;
- BGN_SAVE
- res = (*func)(path, i);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- }
-
- static object *
- dos_do_stat(self, args, statfunc)
- object *self;
- object *args;
- int (*statfunc) FPROTO((const char *, struct stat *));
- {
- struct stat st;
- char *path;
- int res;
- if (!getargs(args, "s", &path))
- return NULL;
- BGN_SAVE
- res = (*statfunc)(path, &st);
- END_SAVE
- if (res != 0)
- return dos_error();
- return mkvalue("(llllllllll)",
- (long)st.st_mode,
- (long)st.st_ino,
- (long)st.st_dev,
- (long)st.st_nlink,
- (long)st.st_uid,
- (long)st.st_gid,
- (long)st.st_size,
- (long)st.st_atime,
- (long)st.st_mtime,
- (long)st.st_ctime);
- }
-
-
- /* DOS methods */
-
- static object *
- dos_chdir(self, args)
- object *self;
- object *args;
- {
- return dos_1str(args, chdir);
- }
-
- static object *
- dos_chmod(self, args)
- object *self;
- object *args;
- {
- extern int chmod();
- return dos_strint(args, chmod);
- }
-
- static object *
- dos_getcwd(self, args)
- object *self;
- object *args;
- {
- char buf[1026];
- char *res;
- if (!getnoarg(args))
- return NULL;
- BGN_SAVE
- res = getcwd(buf, sizeof buf);
- END_SAVE
- if (res == NULL)
- return dos_error();
- return newstringobject(buf);
- }
-
- static object *
- dos_listdir(self, args)
- object *self;
- object *args;
- {
- char *name;
- int len;
- object *d, *v;
- struct find_t ep;
- int rv;
- char namebuf[256];
-
- if (!getargs(args, "s#", &name, &len))
- return NULL;
- if (len >= 250) {
- err_setstr(ValueError, "path too long");
- return NULL;
- }
- strcpy(namebuf, name);
- if (namebuf[len-1] != '/' && namebuf[len-1] != '\\')
- namebuf[len++] = '/';
- strcpy(namebuf + len, "*.*");
-
- if ((d = newlistobject(0)) == NULL)
- return NULL;
-
- if (_dos_findfirst(namebuf,
- _A_HIDDEN|_A_RDONLY|_A_SYSTEM|_A_SUBDIR, &ep) != 0)
- return dos_error();
- do {
- char *p;
- for (p = ep.name; *p != '\0'; p++)
- *p = tolower(*p);
- v = newstringobject(ep.name);
- if (v == NULL) {
- DECREF(d);
- d = NULL;
- break;
- }
- if (addlistitem(d, v) != 0) {
- DECREF(v);
- DECREF(d);
- d = NULL;
- break;
- }
- DECREF(v);
- } while (_dos_findnext(&ep) == 0);
-
- return d;
- }
-
- static object *
- dos_mkdir(self, args)
- object *self;
- object *args;
- {
- return dos_strint(args, mkdir);
- }
-
- static object *
- dos_rename(self, args)
- object *self;
- object *args;
- {
- return dos_2str(args, rename);
- }
-
- static object *
- dos_rmdir(self, args)
- object *self;
- object *args;
- {
- return dos_1str(args, rmdir);
- }
-
- static object *
- dos_stat(self, args)
- object *self;
- object *args;
- {
- return dos_do_stat(self, args, stat);
- }
-
- static object *
- dos_system(self, args)
- object *self;
- object *args;
- {
- char *command;
- long sts;
- if (!getargs(args, "s", &command))
- return NULL;
- BGN_SAVE
- sts = system(command);
- END_SAVE
- return newintobject(sts);
- }
-
- static object *
- dos_unlink(self, args)
- object *self;
- object *args;
- {
- return dos_1str(args, unlink);
- }
-
- static object *
- dos_utime(self, args)
- object *self;
- object *args;
- {
- char *path;
- int res;
-
- #ifdef UTIME_STRUCT
- struct utimbuf buf;
- #define ATIME buf.actime
- #define MTIME buf.modtime
- #define UTIME_ARG &buf
-
- #else
- time_t buf[2];
- #define ATIME buf[0]
- #define MTIME buf[1]
- #define UTIME_ARG buf
- #endif
-
- if (!getargs(args, "(s(ll))", &path, &ATIME, &MTIME))
- return NULL;
- BGN_SAVE
- res = utime(path, UTIME_ARG);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- #undef UTIME_ARG
- #undef ATIME
- #undef MTIME
- }
-
- /* Functions acting on file descriptors */
-
- static object *
- dos_open(self, args)
- object *self;
- object *args;
- {
- char *file;
- int flag;
- int mode = 0777;
- int fd;
- if (!getargs(args, "(si)", &file, &flag)) {
- err_clear();
- if (!getargs(args, "(sii)", &file, &flag, &mode))
- return NULL;
- }
- BGN_SAVE
- fd = open(file, flag, mode);
- END_SAVE
- if (fd < 0)
- return dos_error();
- return newintobject((long)fd);
- }
-
- static object *
- dos_close(self, args)
- object *self;
- object *args;
- {
- int fd, res;
- if (!getargs(args, "i", &fd))
- return NULL;
- BGN_SAVE
- res = close(fd);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- }
-
- static object *
- dos_dup(self, args)
- object *self;
- object *args;
- {
- int fd;
- if (!getargs(args, "i", &fd))
- return NULL;
- BGN_SAVE
- fd = dup(fd);
- END_SAVE
- if (fd < 0)
- return dos_error();
- return newintobject((long)fd);
- }
-
- static object *
- dos_dup2(self, args)
- object *self;
- object *args;
- {
- int fd, fd2, res;
- if (!getargs(args, "(ii)", &fd, &fd2))
- return NULL;
- BGN_SAVE
- res = dup2(fd, fd2);
- END_SAVE
- if (res < 0)
- return dos_error();
- INCREF(None);
- return None;
- }
-
- static object *
- dos_lseek(self, args)
- object *self;
- object *args;
- {
- int fd, how;
- long pos, res;
- if (!getargs(args, "(ili)", &fd, &pos, &how))
- return NULL;
- #ifdef SEEK_SET
- /* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */
- switch (how) {
- case 0: how = SEEK_SET; break;
- case 1: how = SEEK_CUR; break;
- case 2: how = SEEK_END; break;
- }
- #endif
- BGN_SAVE
- res = lseek(fd, pos, how);
- END_SAVE
- if (res < 0)
- return dos_error();
- return newintobject(res);
- }
-
- static object *
- dos_read(self, args)
- object *self;
- object *args;
- {
- int fd, size;
- object *buffer;
- if (!getargs(args, "(ii)", &fd, &size))
- return NULL;
- buffer = newsizedstringobject((char *)NULL, size);
- if (buffer == NULL)
- return NULL;
- BGN_SAVE
- size = read(fd, getstringvalue(buffer), size);
- END_SAVE
- if (size < 0) {
- DECREF(buffer);
- return dos_error();
- }
- resizestring(&buffer, size);
- return buffer;
- }
-
- static object *
- dos_write(self, args)
- object *self;
- object *args;
- {
- int fd, size;
- char *buffer;
- if (!getargs(args, "(is#)", &fd, &buffer, &size))
- return NULL;
- BGN_SAVE
- size = write(fd, buffer, size);
- END_SAVE
- if (size < 0)
- return dos_error();
- return newintobject((long)size);
- }
-
- static object *
- dos_fstat(self, args)
- object *self;
- object *args;
- {
- int fd;
- struct stat st;
- int res;
- if (!getargs(args, "i", &fd))
- return NULL;
- BGN_SAVE
- res = fstat(fd, &st);
- END_SAVE
- if (res != 0)
- return dos_error();
- return mkvalue("(llllllllll)",
- (long)st.st_mode,
- (long)st.st_ino,
- (long)st.st_dev,
- (long)st.st_nlink,
- (long)st.st_uid,
- (long)st.st_gid,
- (long)st.st_size,
- (long)st.st_atime,
- (long)st.st_mtime,
- (long)st.st_ctime);
- }
-
- static object *
- dos_fdopen(self, args)
- object *self;
- object *args;
- {
- extern int fclose PROTO((FILE *));
- int fd;
- char *mode;
- FILE *fp;
- if (!getargs(args, "(is)", &fd, &mode))
- return NULL;
- BGN_SAVE
- fp = fdopen(fd, mode);
- END_SAVE
- if (fp == NULL)
- return dos_error();
- return newopenfileobject(fp, "(fdopen)", mode, fclose);
- }
-
- static struct methodlist dos_methods[] = {
- {"chdir", dos_chdir},
- {"chmod", dos_chmod},
- {"getcwd", dos_getcwd},
- {"listdir", dos_listdir},
- {"mkdir", dos_mkdir},
- {"rename", dos_rename},
- {"rmdir", dos_rmdir},
- {"stat", dos_stat},
- {"system", dos_system},
- {"unlink", dos_unlink},
- {"utime", dos_utime},
- {"open", dos_open},
- {"close", dos_close},
- {"dup", dos_dup},
- {"dup2", dos_dup2},
- {"lseek", dos_lseek},
- {"read", dos_read},
- {"write", dos_write},
- {"fstat", dos_fstat},
- {"fdopen", dos_fdopen},
- {NULL, NULL} /* Sentinel */
- };
-
-
- void
- initdos()
- {
- object *m, *d, *v;
-
- m = initmodule("dos", dos_methods);
- d = getmoduledict(m);
-
- /* Initialize dos.environ dictionary */
- v = convertenviron();
- if (v == NULL || dictinsert(d, "environ", v) != 0)
- fatal("can't define dos.environ");
- DECREF(v);
-
- /* Initialize dos.error exception */
- DosError = newstringobject("dos.error");
- if (DosError == NULL || dictinsert(d, "error", DosError) != 0)
- fatal("can't define dos.error");
- }
-