/************************************************************************* * * * YAP Prolog * * * * Yap Prolog was developed at NCCUP - Universidade do Porto * * * * Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 * * * ************************************************************************** * * * File: sysbits.c * * Last rev: 4/03/88 * * mods: * * comments: very much machine dependent routines * * * *************************************************************************/ #ifdef SCCS static char SccsId[] = "%W% %G%"; #endif #include "sysbits.h" /// File Error Handler static void FileError(yap_error_number type, Term where, const char *format, ...) { if (trueLocalPrologFlag(FILEERRORS_FLAG)) { va_list ap; va_start(ap, format); /* now build the error string */ Yap_Error(type, TermNil, format, ap); va_end(ap); } } static Int p_sh(USES_REGS1); static Int p_shell(USES_REGS1); static Int p_system(USES_REGS1); static Int p_mv(USES_REGS1); static Int p_dir_sp(USES_REGS1); static Int p_getenv(USES_REGS1); static Int p_putenv(USES_REGS1); static Term do_glob(const char *spec, bool ok_to); #ifdef MACYAP static int chdir(char *); /* #define signal skel_signal */ #endif /* MACYAP */ static const char *expandVars(const char *spec, char *u); void exit(int); static void freeBuffer(const void *ptr) { CACHE_REGS if (ptr == NULL || ptr == LOCAL_FileNameBuf || ptr == LOCAL_FileNameBuf2) return; free((void *)ptr); } #ifdef _WIN32 void Yap_WinError(char *yap_error) { char msg[256]; /* Error, we could not read time */ FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), msg, 256, NULL); Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "%s at %s", msg, yap_error); } #endif /* __WINDOWS__ */ #define is_valid_env_char(C) \ (((C) >= 'a' && (C) <= 'z') || ((C) >= 'A' && (C) <= 'Z') || (C) == '_') #if __ANDROID__ AAssetManager *Yap_assetManager; void *Yap_openAssetFile(const char *path) { const char *p = path + 8; AAsset *asset = AAssetManager_open(Yap_assetManager, p, AASSET_MODE_UNKNOWN); return asset; } bool Yap_isAsset(const char *path) { if (Yap_assetManager == NULL) return false; return path[0] == '/' && path[1] == 'a' && path[2] == 's' && path[3] == 's' && path[4] == 'e' && path[5] == 't' && path[6] == 's' && (path[7] == '/' || path[7] == '\0'); } bool Yap_AccessAsset(const char *name, int mode) { AAssetManager *mgr = Yap_assetManager; const char *bufp = name + 7; if (bufp[0] == '/') bufp++; if ((mode & W_OK) == W_OK) { return false; } // directory works if file exists AAssetDir *assetDir = AAssetManager_openDir(mgr, bufp); if (assetDir) { AAssetDir_close(assetDir); return true; } return false; } bool Yap_AssetIsFile(const char *name) { AAssetManager *mgr = Yap_assetManager; const char *bufp = name + 7; if (bufp[0] == '/') bufp++; // check if file is a directory. AAsset *asset = AAssetManager_open(mgr, bufp, AASSET_MODE_UNKNOWN); if (!asset) return false; AAsset_close(asset); return true; } bool Yap_AssetIsDir(const char *name) { AAssetManager *mgr = Yap_assetManager; const char *bufp = name + 7; if (bufp[0] == '/') bufp++; // check if file is a directory. AAssetDir *assetDir = AAssetManager_openDir(mgr, bufp); if (!assetDir) { return false; } AAssetDir_close(assetDir); AAsset *asset = AAssetManager_open(mgr, bufp, AASSET_MODE_UNKNOWN); if (!asset) return true; AAsset_close(asset); return false; } int64_t Yap_AssetSize(const char *name) { AAssetManager *mgr = Yap_assetManager; const char *bufp = name + 7; if (bufp[0] == '/') bufp++; AAsset *asset = AAssetManager_open(mgr, bufp, AASSET_MODE_UNKNOWN); if (!asset) return -1; off64_t len = AAsset_getLength64(asset); AAsset_close(asset); return len; } #endif /// is_directory: verifies whether an expanded file name /// points at a readable directory static bool is_directory(const char *FileName) { #ifdef __ANDROID__ if (Yap_isAsset(FileName)) { return Yap_AssetIsDir(FileName); } #endif #ifdef __WINDOWS__ DWORD dwAtts = GetFileAttributes(FileName); if (dwAtts == INVALID_FILE_ATTRIBUTES) return false; return (dwAtts & FILE_ATTRIBUTE_DIRECTORY); #elif HAVE_LSTAT struct stat buf; if (lstat(FileName, &buf) == -1) { /* return an error number */ return false; } return S_ISDIR(buf.st_mode); #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "stat not available in this configuration"); return false; #endif } bool Yap_Exists(const char *f) { #if _WIN32 if (_access(f, 0) == 0) return true; if (errno == EINVAL) { Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "bad flags to access"); } return false; #elif HAVE_ACCESS if (access(f, F_OK) == 0) return true; if (errno == EINVAL) { Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "bad flags to access"); } return false; #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "access not available in this configuration"); return false; #endif } static int dir_separator(int ch) { #ifdef MAC return (ch == ':'); #elif ATARI || _MSC_VER return (ch == '\\'); #elif defined(__MINGW32__) || defined(__CYGWIN__) return (ch == '\\' || ch == '/'); #else return (ch == '/'); #endif } int Yap_dir_separator(int ch) { return dir_separator(ch); } #if __WINDOWS__ #include char *libdir = NULL; #endif bool Yap_IsAbsolutePath(const char *p0) { // verify first if expansion is needed: ~/ or $HOME/ const char *p = expandVars(p0, LOCAL_FileNameBuf); bool nrc; #if _WIN32 || __MINGW32__ nrc = !PathIsRelative(p); #else nrc = (p[0] == '/'); #endif return nrc; } #define isValidEnvChar(C) \ (((C) >= 'a' && (C) <= 'z') || ((C) >= 'A' && (C) <= 'Z') || (C) == '_') // this is necessary because // support for ~expansion at the beginning // systems like Android do not do this. static const char *PlExpandVars(const char *source, const char *root, char *result) { CACHE_REGS const char *src = source; if (!result) result = malloc(YAP_FILENAME_MAX + 1); if (strlen(source) >= YAP_FILENAME_MAX) { Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "%s in true_file-name is larger than the buffer size (%d bytes)", source, strlen(source)); } /* step 1: eating home information */ if (source[0] == '~') { if (dir_separator(source[1]) || source[1] == '\0') { char *s; src++; #if defined(_WIN32) s = getenv("HOMEDRIVE"); if (s != NULL) strncpy(result, getenv("HOMEDRIVE"), YAP_FILENAME_MAX); // s = getenv("HOMEPATH"); #else s = getenv("HOME"); #endif if (s != NULL) strncpy(result, s, YAP_FILENAME_MAX); strcat(result, src); return result; } else { #if HAVE_GETPWNAM struct passwd *user_passwd; char *res = result; src++; while (!dir_separator((*res = *src)) && *res != '\0') res++, src++; res[0] = '\0'; if ((user_passwd = getpwnam(result)) == NULL) { FileError(SYSTEM_ERROR_OPERATING_SYSTEM, MkAtomTerm(Yap_LookupAtom(source)), "User %s does not exist in %s", result, source); return NULL; } strncpy(result, user_passwd->pw_dir, YAP_FILENAME_MAX); strcat(result, src); #else FileError( SYSTEM_ERROR_OPERATING_SYSTEM, MkAtomTerm(Yap_LookupAtom(source)), "User %s cannot be found in %s, missing getpwnam", result, source); return NULL; #endif } return result; } // do VARIABLE expansion else if (source[0] == '$') { /* follow SICStus expansion rules */ char v[YAP_FILENAME_MAX + 1]; int ch; char *s, *res; src = source + 1; if (src[0] == '{') { res = v; src++; while ((*res = (ch = *src++)) && isValidEnvChar(ch) && ch != '}') { res++; } if (ch == '}') { // {...} // done res[0] = '\0'; } } else { res = v; while ((*res = (ch = *src++)) && isValidEnvChar(ch) && ch != '}') { res++; } src--; res[0] = '\0'; } if ((s = (char *)getenv(v))) { strcpy(result, s); strcat(result, src); } else strcpy(result, src); } else { size_t tocp = strlen(src); if (root) { tocp = strlen(root) + 1; } if (tocp > YAP_FILENAME_MAX) { Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, MkStringTerm(src), "path too long"); return NULL; } if (root) { strncpy(result, root, YAP_FILENAME_MAX); strncat(result, "/", YAP_FILENAME_MAX); strncat(result, source, YAP_FILENAME_MAX); } else { strncpy(result, source, strlen(src) + 1); } } return result; } #if _WIN32 // straightforward conversion from Unix style to WIN style // check cygwin path.cc for possible improvements static char *unix2win(const char *source, char *target, int max) { char *s = target; const char *s0 = source; char *s1; int ch; if (s == NULL) s = malloc(YAP_FILENAME_MAX + 1); s1 = s; // win32 syntax // handle drive notation, eg //a/ if (s0[0] == '\0') { s[0] = '.'; s[1] = '\0'; return s; } if (s0[0] == '/' && s0[1] == '/' && isalpha(s0[2]) && s0[3] == '/') { s1[0] = s0[2]; s1[1] = ':'; s1[2] = '\\'; s0 += 4; s1 += 3; } while ((ch = *s1++ = *s0++)) { if (ch == '$') { s1[-1] = '%'; ch = *s0; // handle $(....) if (ch == '{') { s0++; while ((ch = *s0++) != '}') { *s1++ = ch; if (ch == '\0') return FALSE; } *s1++ = '%'; } else { while (((ch = *s1++ = *s0++) >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch == '-') || (ch >= '0' && ch <= '9') || (ch == '_')) ; s1[-1] = '%'; *s1++ = ch; if (ch == '\0') { s1--; s0--; } } } else if (ch == '/') s1[-1] = '\\'; } return s; } #endif static char *OsPath(const char *p, char *buf) { return (char *)p; } static char *PrologPath(const char *Y, char *X) { return (char *)Y; } #if _WIN32 #define HAVE_BASENAME 1 #define HAVE_REALPATH 1 #endif static bool ChDir(const char *path) { bool rc = false; char qp[FILENAME_MAX + 1]; const char *qpath = Yap_AbsoluteFile(path, qp, true); #ifdef __ANDROID__ if (GLOBAL_AssetsWD) { freeBuffer(GLOBAL_AssetsWD); GLOBAL_AssetsWD = NULL; } if (Yap_isAsset(qpath)) { AAssetManager *mgr = Yap_assetManager; const char *ptr = qpath + 8; AAssetDir *d; if (ptr[0] == '/') ptr++; d = AAssetManager_openDir(mgr, ptr); if (d) { GLOBAL_AssetsWD = malloc(strlen(qpath) + 1); strcpy(GLOBAL_AssetsWD, qpath); AAssetDir_close(d); return true; } return false; } else { GLOBAL_AssetsWD = NULL; } #endif #if _WIN32 rc = true; if (qpath != NULL && qpath[0] && (rc = (SetCurrentDirectory(qpath) != 0)) == 0) { Yap_WinError("SetCurrentDirectory failed"); } #else rc = (chdir(qpath) == 0); #endif if (qpath != qp && qpath != LOCAL_FileNameBuf && qpath != LOCAL_FileNameBuf2) free((char *)qpath); return rc; } static const char *myrealpath(const char *path, char *out) { if (!out) out = LOCAL_FileNameBuf; #if _WIN32 DWORD retval = 0; // notice that the file does not need to exist retval = GetFullPathName(path, YAP_FILENAME_MAX, out, NULL); if (retval == 0) { Yap_WinError("Generating a full path name for a file"); return NULL; } return out; #elif HAVE_REALPATH { char *rc = realpath(path, NULL); if (rc) { return rc; } // rc = NULL; if (errno == ENOENT || errno == EACCES) { char base[YAP_FILENAME_MAX + 1]; strncpy(base, path, YAP_FILENAME_MAX - 1); rc = realpath(dirname(base), out); if (rc) { // base may haave been destroyed const char *b = basename((char *)path); size_t e = strlen(rc); size_t bs = strlen(b); if (rc != out && rc != base) { rc = realloc(rc, e + bs + 2); } #if _WIN32 if (rc[e - 1] != '\\' && rc[e - 1] != '/') { rc[e] = '\\'; rc[e + 1] = '\0'; } #else if (rc[e - 1] != '/') { rc[e] = '/'; rc[e + 1] = '\0'; } #endif strcat(rc, b); return rc; } } } #endif out = malloc(strlen(path) + 1); strcpy(out, path); return out; } static const char *expandVars(const char *spec, char *u) { CACHE_REGS #if _WIN32 || defined(__MINGW32__) char *out; // first pass, remove Unix style stuff if ((out = unix2win(spec, u, YAP_FILENAME_MAX)) == NULL) return NULL; spec = u; #endif bool ok_to = LOCAL_PrologMode && !(LOCAL_PrologMode & BootMode); if (ok_to) { Term t = do_glob(spec, true); if (IsPairTerm(t)) return RepAtom(AtomOfTerm(HeadOfTerm(t)))->StrOfAE; return NULL; } return spec; } /** * generate absolute path, if ok first expand SICStus Prolog style * * @param[in] spec the file path, including `~` and `$`. * @param[in] ok where to process `~` and `$`. * * @return tmp, or NULL, in malloced memory */ const char *Yap_AbsoluteFile(const char *spec, char *rc0, bool ok) { const char *rc; const char *spec1; const char *spec2; char rc1[YAP_FILENAME_MAX + 1]; /// spec gothe original spec; /// rc0 may be an outout buffer /// rc1 the internal buffer /// /// PlExpandVars #if _WIN32 char rc2[YAP_FILENAME_MAX]; if ((rc = unix2win(spec, rc2, YAP_FILENAME_MAX)) == NULL) { return NULL; } spec1 = rc; #else spec1 = spec; #endif /// spec gothe original spec; /// rc1 the internal buffer if (ok) { const char *q = PlExpandVars(spec1, NULL, rc1); if (!q) spec2 = spec1; else spec2 = q; } else { spec2 = spec1; } rc = myrealpath(spec2, rc0); return rc; } static Term /* Expand the string for the program to run. */ do_glob(const char *spec, bool glob_vs_wordexp) { CACHE_REGS char u[YAP_FILENAME_MAX + 1]; const char *espec = u; if (spec == NULL) { return TermNil; } #if _WIN32 { WIN32_FIND_DATA find; HANDLE hFind; CELL *dest; Term tf; char drive[_MAX_DRIVE]; char dir[_MAX_DIR]; char fname[_MAX_FNAME]; char ext[_MAX_EXT]; _splitpath(spec, drive, dir, fname, ext); _makepath(u, drive, dir, fname, ext); // first pass, remove Unix style stuff hFind = FindFirstFile(u, &find); if (hFind == INVALID_HANDLE_VALUE) { return TermNil; } else { tf = AbsPair(HR); _makepath(u, drive, dir, find.cFileName, NULL); HR[0] = MkAtomTerm(Yap_LookupAtom(u)); HR[1] = TermNil; dest = HR + 1; HR += 2; while (FindNextFile(hFind, &find)) { *dest = AbsPair(HR); _makepath(u, drive, dir, find.cFileName, NULL); HR[0] = MkAtomTerm(Yap_LookupAtom(u)); HR[1] = TermNil; dest = HR + 1; HR += 2; } FindClose(hFind); } return tf; } #elif HAVE_WORDEXP || HAVE_GLOB strncpy(u, spec, sizeof(u)); /* Expand the string for the program to run. */ size_t pathcount; #if HAVE_GLOB glob_t gresult; #endif #if HAVE_WORDEXP wordexp_t wresult; #endif #if HAVE_GLOB || HAVE_WORDEXP char **ss = NULL; int flags = 0, j; #endif if (glob_vs_wordexp) { #if HAVE_GLOB #ifdef GLOB_NOCHECK flags = GLOB_NOCHECK; #else flags = 0; #endif #ifdef GLOB_BRACE flags |= GLOB_BRACE | GLOB_TILDE; #endif switch (glob(espec, flags, NULL, &gresult)) { case 0: /* Successful. */ ss = gresult.gl_pathv; pathcount = gresult.gl_pathc; if (pathcount) { break; } case GLOB_NOMATCH: globfree(&gresult); { return TermNil; } case GLOB_ABORTED: PlIOError(SYSTEM_ERROR_OPERATING_SYSTEM, ARG1, "glob aborted: %sn", strerror(errno)); globfree(&gresult); return TermNil; case GLOB_NOSPACE: Yap_Error(RESOURCE_ERROR_HEAP, ARG1, "glob ran out of space: %sn", strerror(errno)); globfree(&gresult); return TermNil; /* If the error was WRDE_NOSPACE, then perhaps part of the result was allocated. */ default: /* Some other error. */ return TermNil; } #endif } else { #if HAVE_WORDEXP int rc; memset(&wresult, 0, sizeof(wresult)); switch ((rc = wordexp(espec, &wresult, flags))) { case 0: /* Successful. */ ss = wresult.we_wordv; pathcount = wresult.we_wordc; if (pathcount) { break; } else { Term t; t = MkAtomTerm(Yap_LookupAtom(expandVars(espec, NULL))); wordfree(&wresult); return MkPairTerm(t, TermNil); } case WRDE_NOSPACE: /* If the error was WRDE_NOSPACE, then perhaps part of the result was allocated. */ Yap_Error(RESOURCE_ERROR_HEAP, ARG1, "wordexp ran out of space: %s", strerror(errno)); wordfree(&wresult); return TermNil; default: /* Some other error. */ PlIOError(SYSTEM_ERROR_OPERATING_SYSTEM, ARG1, "wordexp failed: %s", strerror(errno)); wordfree(&wresult); return TermNil; } #endif } const char *tmp; Term tf = TermNil; for (j = 0; j < pathcount; j++) { const char *s = ss[pathcount - (j + 1)]; tmp = s; // if (!exists(s)) // continue; Atom a = Yap_LookupAtom(tmp); tf = MkPairTerm(MkAtomTerm(a), tf); } #if HAVE_GLOB if (glob_vs_wordexp) globfree(&gresult); #endif #if HAVE_WORDEXP if (!glob_vs_wordexp) wordfree(&wresult); #endif return tf; #else // just use basic return MkPairTerm(MkAtomTerm(Yap_LookupAtom(espec)), TermNil); #endif } /** * @pred prolog_expanded_file_system_path( +PrologPath, +ExpandVars, -OSPath ) * * Apply basic transformations to paths, and conidtionally apply * traditional SICStus-style variable expansion. * * @param PrologPath the source, may be atom or string * @param ExpandVars expand initial occurrence of ~ or $ * @param Prefix add this path before _PrologPath_ * @param OSPath pathname. * * @return */ static Int real_path(USES_REGS1) { Term t1 = Deref(ARG1); const char *cmd, *rc0; if (IsAtomTerm(t1)) { cmd = RepAtom(AtomOfTerm(t1))->StrOfAE; } else if (IsStringTerm(t1)) { cmd = StringOfTerm(t1); } else { return false; } #if _WIN32 char cmd2[YAP_FILENAME_MAX + 1]; char *rc; if ((rc = unix2win(cmd, cmd2, YAP_FILENAME_MAX)) == NULL) { return false; } cmd = rc; #endif rc0 = myrealpath(cmd, NULL); if (!rc0) { PlIOError(SYSTEM_ERROR_OPERATING_SYSTEM, ARG1, NULL); } return Yap_unify(MkAtomTerm(Yap_LookupAtom(rc0)), ARG2); } #define EXPAND_FILENAME_DEFS() \ PAR("parameter_expansion", isatom, EXPAND_FILENAME_PARAMETER_EXPANSION) \ , PAR("commands", booleanFlag, EXPAND_FILENAME_COMMANDS), \ PAR(NULL, ok, EXPAND_FILENAME_END) #define PAR(x, y, z) z typedef enum expand_filename_enum_choices { EXPAND_FILENAME_DEFS() } expand_filename_enum_choices_t; #undef PAR #define PAR(x, y, z) \ { x, y, z } static const param_t expand_filename_defs[] = {EXPAND_FILENAME_DEFS()}; #undef PAR static Term do_expand_file_name(Term t1, Term opts USES_REGS) { xarg *args; expand_filename_enum_choices_t i; bool use_system_expansion = true; char *tmpe = NULL; const char *spec; Term tf; if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, NULL); return TermNil; } else if (IsAtomTerm(t1)) { spec = AtomTermName(t1); } else if (IsStringTerm(t1)) { spec = StringOfTerm(t1); } else { Yap_Error(TYPE_ERROR_ATOM, t1, NULL); return TermNil; } #if _WIN32 { char *rc; char cmd2[YAP_FILENAME_MAX + 1]; if ((rc = unix2win(spec, cmd2, YAP_FILENAME_MAX)) == NULL) { return false; } spec = rc; } #endif args = Yap_ArgListToVector(opts, expand_filename_defs, EXPAND_FILENAME_END); if (args == NULL) { return TermNil; } tmpe = malloc(YAP_FILENAME_MAX + 1); for (i = 0; i < EXPAND_FILENAME_END; i++) { if (args[i].used) { Term t = args[i].tvalue; switch (i) { case EXPAND_FILENAME_PARAMETER_EXPANSION: if (t == TermProlog) { const char *s = expandVars(spec, LOCAL_FileNameBuf); if (s == NULL) { return TermNil; } strcpy(tmpe, s); } else if (t == TermTrue) { use_system_expansion = true; } else if (t == TermFalse) { use_system_expansion = false; } break; case EXPAND_FILENAME_COMMANDS: if (!use_system_expansion) { use_system_expansion = true; #if 0 // def WRDE_NOCMD if (t == TermFalse) { flags = WRDE_NOCMD; } #endif } case EXPAND_FILENAME_END: break; } } } if (!use_system_expansion) { const char *o = expandVars(spec, NULL); if (!o) return false; return MkPairTerm(MkAtomTerm(Yap_LookupAtom(o)), TermNil); } tf = do_glob(spec, true); return tf; } /* @pred expand_file_name( +Pattern, -ListOfPaths) is det This builtin receives a pattern and expands it into a list of files. In Unix-like systems, YAP applies glob to expand patterns such as '*', '.', and '?'. Further variable expansion may also happen. glob is shell-dependent: som Yap_InitCPred ("absolute_file_system_path", 2, absolute_file_system_path, 0); Yap_InitCPred ("real_path", 2, prolog_realpath, 0); Yap_InitCPred ("true_file_name", 2, true_file_name, SyncPredFlag); Yap_InitCPred ("true_file_name", 3, true_file_name3, SyncPredFlag); e shells allow command execution and brace-expansion. */ static Int expand_file_name(USES_REGS1) { Term tf = do_expand_file_name(Deref(ARG1), TermNil PASS_REGS); if (tf == 0) return false; return Yap_unify(tf, ARG2); } static Int expand_file_name3(USES_REGS1) { Term tf = do_expand_file_name(Deref(ARG1), Deref(ARG2) PASS_REGS); return Yap_unify(tf, ARG3); } /* static char *canoniseFileName( char *path) { #if HAVE_REALPATH && HAVE_BASENAME #if _WIN32 || defined(__MINGW32__) char *o = malloc(YAP_FILENAME_MAX+1); if (!o) return NULL; // first pass, remove Unix style stuff if (unix2win(path, o, YAP_FILENAME_MAX) == NULL) return NULL; path = o; #endif char *rc; if (tmp == NULL) return NULL; rc = myrealpath(path); #if _WIN32 || defined(__MINGW32__) freeBuffer(o); #endif return rc; #endif } */ static Int absolute_file_system_path(USES_REGS1) { Term t = Deref(ARG1); const char *fp; bool rc; char s[MAXPATHLEN + 1]; const char *text = Yap_TextTermToText(t, s, MAXPATHLEN, LOCAL_encoding); if (text == NULL) { return false; } if (!(fp = Yap_AbsoluteFile(RepAtom(AtomOfTerm(t))->StrOfAE, NULL, true))) return false; rc = Yap_unify(Yap_MkTextTerm(fp, LOCAL_encoding, t), ARG2); if (fp != s) freeBuffer((void *)fp); return rc; } static Int prolog_to_os_filename(USES_REGS1) { Term t = Deref(ARG1), t2 = Deref(ARG2); char *fp; char out[MAXPATHLEN + 1]; if (IsVarTerm(t)) { if (IsVarTerm(t2)) { Yap_Error(INSTANTIATION_ERROR, t, "prolog_to_os_filename"); return false; } else if (IsAtomTerm(t2)) { if (!(fp = PrologPath(RepAtom(AtomOfTerm(t2))->StrOfAE, out))) return false; return Yap_unify(ARG1, MkAtomTerm(Yap_LookupAtom(fp))); } else { Yap_Error(TYPE_ERROR_ATOM, t2, "prolog_to_os_filename"); return false; } } else if (!IsAtomTerm(t)) { Yap_Error(TYPE_ERROR_ATOM, t, "prolog_to_os_filename"); return false; } if (!(fp = OsPath(RepAtom(AtomOfTerm(t))->StrOfAE, out))) return false; return Yap_unify(MkAtomTerm(Yap_LookupAtom(fp)), ARG2); } Atom Yap_TemporaryFile(const char *prefix, int *fd) { #if HAVE_MKSTEMP char *tmp = malloc(PATH_MAX); int n; int f; if (tmp == NULL) return NIL; strncpy(tmp, prefix, PATH_MAX - 1); n = strlen(tmp); if (n >= 6 && tmp[n - 1] == 'X' && tmp[n - 2] == 'X' && tmp[n - 3] == 'X' && tmp[n - 4] == 'X' && tmp[n - 5] == 'X' && tmp[n - 6] == 'X') f = mkstemp(tmp); else { strncat(tmp, "XXXXXX", PATH_MAX - 1); f = mkstemp(tmp); } if (fd) *fd = f; return Yap_LookupAtom(tmp); #else return AtomNil; #endif } /** @pred make_directory(+ _Dir_) Create a directory _Dir_. The name of the directory must be an atom. */ static Int make_directory(USES_REGS1) { const char *fd = AtomName(AtomOfTerm(ARG1)); #if defined(__MINGW32__) || _MSC_VER if (_mkdir(fd) == -1) { #else if (mkdir(fd, 0777) == -1) { #endif /* return an error number */ return false; // errno? } return true; } static Int p_rmdir(USES_REGS1) { const char *fd = AtomName(AtomOfTerm(ARG1)); #if defined(__MINGW32__) || _MSC_VER if (_rmdir(fd) == -1) { #else if (rmdir(fd) == -1) { #endif /* return an error number */ return (Yap_unify(ARG2, MkIntTerm(errno))); } return true; } static bool initSysPath(Term tlib, Term tcommons, bool dir_done, bool commons_done) { CACHE_REGS int len; #if __WINDOWS__ { char *dir; if ((dir = Yap_RegistryGetString("library")) && is_directory(dir)) { if (!Yap_unify(tlib, MkAtomTerm(Yap_LookupAtom(dir)))) return FALSE; } dir_done = true; if ((dir = Yap_RegistryGetString("prolog_commons")) && is_directory(dir)) { if (!Yap_unify(tcommons, MkAtomTerm(Yap_LookupAtom(dir)))) return FALSE; } commons_done = true; } if (dir_done && commons_done) return TRUE; #endif strncpy(LOCAL_FileNameBuf, YAP_SHAREDIR, YAP_FILENAME_MAX); strncat(LOCAL_FileNameBuf, "/", YAP_FILENAME_MAX); len = strlen(LOCAL_FileNameBuf); if (!dir_done) { strncat(LOCAL_FileNameBuf, "Yap", YAP_FILENAME_MAX); if (is_directory(LOCAL_FileNameBuf)) { if (!Yap_unify(tlib, MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)))) return FALSE; dir_done = true; } } if (!commons_done) { LOCAL_FileNameBuf[len] = '\0'; strncat(LOCAL_FileNameBuf, "PrologCommons", YAP_FILENAME_MAX); if (is_directory(LOCAL_FileNameBuf)) { if (!Yap_unify(tcommons, MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)))) return FALSE; } commons_done = true; } if (dir_done && commons_done) return TRUE; #if __WINDOWS__ { size_t buflen; char *pt; /* couldn't find it where it was supposed to be, let's try using the executable */ if (!GetModuleFileName(NULL, LOCAL_FileNameBuf, YAP_FILENAME_MAX)) { Yap_WinError("could not find executable name"); /* do nothing */ return FALSE; } buflen = strlen(LOCAL_FileNameBuf); pt = LOCAL_FileNameBuf + buflen; while (*--pt != '\\') { /* skip executable */ if (pt == LOCAL_FileNameBuf) { FileError(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "could not find executable name"); /* do nothing */ return FALSE; } } while (*--pt != '\\') { /* skip parent directory "bin\\" */ if (pt == LOCAL_FileNameBuf) { FileError(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "could not find executable name"); /* do nothing */ return FALSE; } } /* now, this is a possible location for the ROOT_DIR, let's look for a share * directory here */ pt[1] = '\0'; /* grosse */ strncat(LOCAL_FileNameBuf, "lib\\Yap", YAP_FILENAME_MAX); libdir = Yap_AllocCodeSpace(strlen(LOCAL_FileNameBuf) + 1); strncpy(libdir, LOCAL_FileNameBuf, strlen(LOCAL_FileNameBuf) + 1); pt[1] = '\0'; strncat(LOCAL_FileNameBuf, "share", YAP_FILENAME_MAX); } strncat(LOCAL_FileNameBuf, "\\", YAP_FILENAME_MAX); len = strlen(LOCAL_FileNameBuf); strncat(LOCAL_FileNameBuf, "Yap", YAP_FILENAME_MAX); if (!dir_done && is_directory(LOCAL_FileNameBuf)) { if (!Yap_unify(tlib, MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)))) return FALSE; } dir_done = true; LOCAL_FileNameBuf[len] = '\0'; strncat(LOCAL_FileNameBuf, "PrologCommons", YAP_FILENAME_MAX); if (!commons_done && is_directory(LOCAL_FileNameBuf)) { if (!Yap_unify(tcommons, MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)))) return FALSE; } commons_done = true; #endif return dir_done && commons_done; } static Int libraries_directories(USES_REGS1) { return initSysPath(ARG1, ARG2, false, false); } static Int system_library(USES_REGS1) { return initSysPath(ARG1, MkVarTerm(), false, true); } static Int commons_library(USES_REGS1) { return initSysPath(MkVarTerm(), ARG1, true, false); } static Int p_dir_sp(USES_REGS1) { #if ATARI || _MSC_VER || defined(__MINGW32__) Term t = MkIntTerm('\\'); Term t2 = MkIntTerm('/'); #else Term t = MkIntTerm('/'); Term t2 = MkIntTerm('/'); #endif return Yap_unify_constant(ARG1, t) || Yap_unify_constant(ARG1, t2); } size_t Yap_InitPageSize(void) { #ifdef _WIN32 SYSTEM_INFO si; GetSystemInfo(&si); return si.dwPageSize; #elif HAVE_UNISTD_H #if defined(__FreeBSD__) || defined(__DragonFly__) return getpagesize(); #elif defined(_AIX) return sysconf(_SC_PAGE_SIZE); #elif !defined(_SC_PAGESIZE) return getpagesize(); #else return sysconf(_SC_PAGESIZE); #endif #else bla bla #endif } /* TrueFileName -> Finds the true name of a file */ #ifdef __MINGW32__ #include #endif static int volume_header(char *file) { #if _MSC_VER || defined(__MINGW32__) char *ch = file; int c; while ((c = ch[0]) != '\0') { if (isalnum(c)) ch++; else return (c == ':'); } #endif return (FALSE); } int Yap_volume_header(char *file) { return volume_header(file); } const char *Yap_getcwd(const char *cwd, size_t cwdlen) { #if _WIN32 || defined(__MINGW32__) if (GetCurrentDirectory(cwdlen, (char *)cwd) == 0) { Yap_WinError("GetCurrentDirectory failed"); return NULL; } return (char *)cwd; #elif __ANDROID__ if (GLOBAL_AssetsWD) { return strncpy((char *)cwd, (const char *)GLOBAL_AssetsWD, cwdlen); } #endif return getcwd((char *)cwd, cwdlen); } static Int working_directory(USES_REGS1) { char dir[YAP_FILENAME_MAX + 1]; Term t1 = Deref(ARG1), t2; if (!IsVarTerm(t1) && !IsAtomTerm(t1)) { Yap_Error(TYPE_ERROR_ATOM, t1, "working_directory"); } if (!Yap_unify(t1, MkAtomTerm(Yap_LookupAtom(Yap_getcwd(dir, YAP_FILENAME_MAX))))) return false; t2 = Deref(ARG2); if (IsVarTerm(t2)) { Yap_Error(INSTANTIATION_ERROR, t2, "working_directory"); } if (!IsAtomTerm(t2)) { Yap_Error(TYPE_ERROR_ATOM, t2, "working_directory"); } if (t2 == TermEmptyAtom || t2 == TermDot) return true; return ChDir(RepAtom(AtomOfTerm(t2))->StrOfAE); } /** Yap_findFile(): tries to locate a file, no expansion should be performed/ * * * @param isource the proper file * @param idef the default name fo rthe file, ie, startup.yss * @param root the prefix * @param result the output * @param access verify whether the file has access permission * @param ftype saved state, object, saved file, prolog file * @param expand_root expand $ ~, etc * @param in_lib library file * * @return */ const char *Yap_findFile(const char *isource, const char *idef, const char *iroot, char *result, bool access, YAP_file_type_t ftype, bool expand_root, bool in_lib) { char save_buffer[YAP_FILENAME_MAX + 1]; const char *root, *source = isource; int rc = FAIL_RESTORE; int try = 0; while (rc == FAIL_RESTORE) { bool done = false; // { CACHE_REGS __android_log_print(ANDROID_LOG_ERROR, __FUNCTION__, // "try=%d %s %s", try, isource, iroot) ; } switch (try ++) { case 0: // path or file name is given; root = iroot; if (!root && ftype == YAP_BOOT_PL) { root = YAP_PL_SRCDIR; } if (idef || isource) { source = (isource ? isource : idef); } break; case 1: // library directory is given in command line if (in_lib && ftype == YAP_SAVED_STATE) { root = iroot; source = (isource ? isource : idef); } else { done = true; } break; case 2: // use environment variable YAPLIBDIR #if HAVE_GETENV if (in_lib) { if (ftype == YAP_SAVED_STATE || ftype == YAP_OBJ) { root = getenv("YAPLIBDIR"); } else if (ftype == YAP_BOOT_PL) { root = getenv("YAPSHAREDIR"); if (root == NULL) { continue; } else { strncpy(save_buffer, root, YAP_FILENAME_MAX); strncat(save_buffer, "/pl", YAP_FILENAME_MAX); } } source = (isource ? isource : idef); } else #endif done = true; break; case 3: // use compilation variable YAPLIBDIR if (in_lib) { source = (isource ? isource : idef); if (ftype == YAP_PL) { root = YAP_SHAREDIR; } else if (ftype == YAP_BOOT_PL) { root = YAP_SHAREDIR "/pl"; } else { root = YAP_LIBDIR; } } else done = true; break; case 4: // WIN stuff: registry #if __WINDOWS__ if (in_lib) { source = (ftype == YAP_PL || ftype == YAP_QLY ? "library" : "startup"); source = Yap_RegistryGetString(source); root = NULL; } else #endif done = true; break; case 5: // search from the binary #ifndef __ANDROID__ { done = true; } break; #endif { const char *pt = Yap_FindExecutable(); if (pt) { if (ftype == YAP_BOOT_PL) { root = "../../share/Yap/pl"; } else { root = (ftype == YAP_SAVED_STATE || ftype == YAP_OBJ ? "../../lib/Yap" : "../../share/Yap"); } if (Yap_findFile(source, NULL, root, save_buffer, access, ftype, expand_root, in_lib)) root = save_buffer; else done = true; } else { done = true; } source = (isource ? isource : idef); } break; case 6: // default, try current directory if (!isource && ftype == YAP_SAVED_STATE) source = idef; root = NULL; break; default: return false; } if (done) continue; // { CACHE_REGS __android_log_print(ANDROID_LOG_ERROR, __FUNCTION__, // "root= %s %s ", root, source) ; } const char *work = PlExpandVars(source, root, result); // expand names in case you have // to add a prefix if (!access || Yap_Exists(work)) { return work; // done } } return NULL; } static Int true_file_name(USES_REGS1) { Term t = Deref(ARG1); const char *s; if (IsVarTerm(t)) { Yap_Error(INSTANTIATION_ERROR, t, "argument to true_file_name unbound"); return FALSE; } if (IsAtomTerm(t)) { s = RepAtom(AtomOfTerm(t))->StrOfAE; } else if (IsStringTerm(t)) { s = StringOfTerm(t); } else { Yap_Error(TYPE_ERROR_ATOM, t, "argument to true_file_name"); return FALSE; } if (!(s = Yap_AbsoluteFile(s, LOCAL_FileNameBuf, true))) return false; return Yap_unify(ARG2, MkAtomTerm(Yap_LookupAtom(s))); } static Int p_expand_file_name(USES_REGS1) { Term t = Deref(ARG1); const char *text, *text2; if (IsVarTerm(t)) { Yap_Error(INSTANTIATION_ERROR, t, "argument to true_file_name unbound"); return FALSE; } text = Yap_TextTermToText(t, NULL, 0, LOCAL_encoding); if (!text) return false; if (!(text2 = PlExpandVars(text, NULL, NULL))) return false; freeBuffer(text); bool rc = Yap_unify(ARG2, Yap_MkTextTerm(text2, LOCAL_encoding, t)); freeBuffer(text2); return rc; } static Int true_file_name3(USES_REGS1) { Term t = Deref(ARG1), t2 = Deref(ARG2); char *root = NULL; if (IsVarTerm(t)) { Yap_Error(INSTANTIATION_ERROR, t, "argument to true_file_name unbound"); return FALSE; } if (!IsAtomTerm(t)) { Yap_Error(TYPE_ERROR_ATOM, t, "argument to true_file_name"); return FALSE; } if (!IsVarTerm(t2)) { if (!IsAtomTerm(t)) { Yap_Error(TYPE_ERROR_ATOM, t2, "argument to true_file_name"); return FALSE; } root = RepAtom(AtomOfTerm(t2))->StrOfAE; } if (!Yap_findFile(RepAtom(AtomOfTerm(t))->StrOfAE, NULL, root, LOCAL_FileNameBuf, false, YAP_PL, false, false)) return FALSE; return Yap_unify(ARG3, MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf))); } /* Executes $SHELL under Prolog */ /** @pred sh Creates a new shell interaction. */ static Int p_sh(USES_REGS1) { /* sh */ #ifdef HAVE_SYSTEM char *shell; shell = (char *)getenv("SHELL"); if (shell == NULL) shell = "/bin/sh"; if (system(shell) < 0) { #if HAVE_STRERROR Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "%s in sh/0", strerror(errno)); #else Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "in sh/0"); #endif return FALSE; } return TRUE; #else #ifdef MSH register char *shell; shell = "msh -i"; system(shell); return (TRUE); #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "sh not available in this configuration"); return (FALSE); #endif /* MSH */ #endif } /** shell(+Command:text, -Status:integer) is det. Run an external command and wait for its completion. */ static Int p_shell(USES_REGS1) { /* '$shell'(+SystCommand) */ const char *cmd; Term t1 = Deref(ARG1); if (IsAtomTerm(t1)) cmd = RepAtom(AtomOfTerm(t1))->StrOfAE; else if (IsStringTerm(t1)) cmd = StringOfTerm(t1); else return FALSE; #if _MSC_VER || defined(__MINGW32__) { int rval = system(cmd); return rval == 0; } return true; #else #if HAVE_SYSTEM char *shell; register int bourne = FALSE; shell = (char *)getenv("SHELL"); if (!strcmp(shell, "/bin/sh")) bourne = TRUE; if (shell == NIL) bourne = TRUE; /* Yap_CloseStreams(TRUE); */ if (bourne) return system(cmd) == 0; else { int status = -1; int child = fork(); if (child == 0) { /* let the children go */ if (!execl(shell, shell, "-c", cmd, NULL)) { exit(-1); } exit(TRUE); } { /* put the father on wait */ int result = child < 0 || /* vsc:I am not sure this is used, Stevens say wait returns an integer. #if NO_UNION_WAIT */ wait((&status)) != child || /* #else wait ((union wait *) (&status)) != child || #endif */ status == 0; return result; } } #else /* HAVE_SYSTEM */ #ifdef MSH register char *shell; shell = "msh -i"; /* Yap_CloseStreams(); */ system(shell); return TRUE; #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "shell not available in this configuration"); return FALSE; #endif #endif /* HAVE_SYSTEM */ #endif /* _MSC_VER */ } /** system(+Command:text). Run an external command. */ static Int p_system(USES_REGS1) { /* '$system'(+SystCommand) */ const char *cmd; Term t1 = Deref(ARG1); if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "argument to system/1 unbound"); return FALSE; } else if (IsAtomTerm(t1)) { cmd = RepAtom(AtomOfTerm(t1))->StrOfAE; } else if (IsStringTerm(t1)) { cmd = StringOfTerm(t1); } else { if (!Yap_GetName(LOCAL_FileNameBuf, YAP_FILENAME_MAX, t1)) { Yap_Error(TYPE_ERROR_ATOM, t1, "argument to system/1"); return false; } cmd = LOCAL_FileNameBuf; } /* Yap_CloseStreams(TRUE); */ #if _MSC_VER || defined(__MINGW32__) { STARTUPINFO si; PROCESS_INFORMATION pi; ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); ZeroMemory(&pi, sizeof(pi)); // Start the child process. if (!CreateProcess(NULL, // No module name (use command line) (LPSTR)cmd, // Command line NULL, // Process handle not inheritable NULL, // Thread handle not inheritable FALSE, // Set handle inheritance to FALSE 0, // No creation flags NULL, // Use parent's environment block NULL, // Use parent's starting directory &si, // Pointer to STARTUPINFO structure &pi) // Pointer to PROCESS_INFORMATION structure ) { Yap_Error(SYSTEM_ERROR_INTERNAL, ARG1, "CreateProcess failed (%d).\n", GetLastError()); return FALSE; } // Wait until child process exits. WaitForSingleObject(pi.hProcess, INFINITE); // Close process and thread handles. CloseHandle(pi.hProcess); CloseHandle(pi.hThread); return TRUE; } return FALSE; #elif HAVE_SYSTEM #if _MSC_VER _flushall(); #endif if (system(cmd)) { #if HAVE_STRERROR Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, t1, "%s in system(%s)", strerror(errno), cmd); #else Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, t1, "in system(%s)", cmd); #endif return FALSE; } return TRUE; #else #ifdef MSH register char *shell; shell = "msh -i"; /* Yap_CloseStreams(); */ system(shell); return (TRUE); #undef command #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "sh not available in this machine"); return (FALSE); #endif #endif /* HAVE_SYSTEM */ } static Int p_mv(USES_REGS1) { /* rename(+OldName,+NewName) */ #if HAVE_LINK int r; char *oldname, *newname; Term t1 = Deref(ARG1); Term t2 = Deref(ARG2); if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "first argument to rename/2 unbound"); } else if (!IsAtomTerm(t1)) { Yap_Error(TYPE_ERROR_ATOM, t1, "first argument to rename/2 not atom"); } if (IsVarTerm(t2)) { Yap_Error(INSTANTIATION_ERROR, t2, "second argument to rename/2 unbound"); } else if (!IsAtomTerm(t2)) { Yap_Error(TYPE_ERROR_ATOM, t2, "second argument to rename/2 not atom"); } else { oldname = (RepAtom(AtomOfTerm(t1)))->StrOfAE; newname = (RepAtom(AtomOfTerm(t2)))->StrOfAE; if ((r = link(oldname, newname)) == 0 && (r = unlink(oldname)) != 0) unlink(newname); if (r != 0) { #if HAVE_STRERROR Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, t2, "%s in rename(%s,%s)", strerror(errno), oldname, newname); #else Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, t2, "in rename(%s,%s)", oldname, newname); #endif return false; } return true; } #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "rename/2 not available in this machine"); #endif return false; } #ifdef MAC void Yap_SetTextFile(name) char *name; { #ifdef MACC SetFileType(name, 'TEXT'); SetFileSignature(name, 'EDIT'); #else FInfo f; FInfo *p = &f; GetFInfo(name, 0, p); p->fdType = 'TEXT'; #ifdef MPW if (mpwshell) p->fdCreator = 'MPS\0'; #endif #ifndef LIGHT else p->fdCreator = 'EDIT'; #endif SetFInfo(name, 0, p); #endif } #endif /* return YAP's environment */ static Int p_getenv(USES_REGS1) { #if HAVE_GETENV Term t1 = Deref(ARG1), to; char *s, *so; if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "first arg of getenv/2"); return (FALSE); } else if (!IsAtomTerm(t1)) { Yap_Error(TYPE_ERROR_ATOM, t1, "first arg of getenv/2"); return (FALSE); } else s = RepAtom(AtomOfTerm(t1))->StrOfAE; if ((so = getenv(s)) == NULL) return (FALSE); to = MkAtomTerm(Yap_LookupAtom(so)); return (Yap_unify_constant(ARG2, to)); #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "getenv not available in this configuration"); return (FALSE); #endif } /* set a variable in YAP's environment */ static Int p_putenv(USES_REGS1) { #if HAVE_PUTENV Term t1 = Deref(ARG1), t2 = Deref(ARG2); char *s, *s2, *p0, *p; if (IsVarTerm(t1)) { Yap_Error(INSTANTIATION_ERROR, t1, "first arg to putenv/2"); return (FALSE); } else if (!IsAtomTerm(t1)) { Yap_Error(TYPE_ERROR_ATOM, t1, "first arg to putenv/2"); return (FALSE); } else s = RepAtom(AtomOfTerm(t1))->StrOfAE; if (IsVarTerm(t2)) { Yap_Error(INSTANTIATION_ERROR, t1, "second arg to putenv/2"); return (FALSE); } else if (!IsAtomTerm(t2)) { Yap_Error(TYPE_ERROR_ATOM, t2, "second arg to putenv/2"); return (FALSE); } else s2 = RepAtom(AtomOfTerm(t2))->StrOfAE; while (!(p0 = p = Yap_AllocAtomSpace(strlen(s) + strlen(s2) + 3))) { if (!Yap_growheap(FALSE, MinHeapGap, NULL)) { Yap_Error(RESOURCE_ERROR_HEAP, TermNil, LOCAL_ErrorMessage); return FALSE; } } while ((*p++ = *s++) != '\0') ; p[-1] = '='; while ((*p++ = *s2++) != '\0') ; if (putenv(p0) == 0) return TRUE; #if HAVE_STRERROR Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "in putenv(%s)", strerror(errno), p0); #else Yap_Error(SYSTEM_ERROR_OPERATING_SYSTEM, TermNil, "in putenv(%s)", p0); #endif return FALSE; #else Yap_Error(SYSTEM_ERROR_INTERNAL, TermNil, "putenv not available in this configuration"); return FALSE; #endif } static Int p_host_type(USES_REGS1) { Term out = MkAtomTerm(Yap_LookupAtom(HOST_ALIAS)); return (Yap_unify(out, ARG1)); } static Int p_yap_home(USES_REGS1) { Term out = MkAtomTerm(Yap_LookupAtom(YAP_ROOTDIR)); return (Yap_unify(out, ARG1)); } static Int p_yap_paths(USES_REGS1) { Term out1, out2, out3; const char *env_destdir = getenv("DESTDIR"); char destdir[YAP_FILENAME_MAX + 1]; if (env_destdir) { strncat(destdir, env_destdir, YAP_FILENAME_MAX); strncat(destdir, "/" YAP_LIBDIR, YAP_FILENAME_MAX); out1 = MkAtomTerm(Yap_LookupAtom(destdir)); } else { out1 = MkAtomTerm(Yap_LookupAtom(YAP_LIBDIR)); } if (env_destdir) { strncat(destdir, env_destdir, YAP_FILENAME_MAX); strncat(destdir, "/" YAP_SHAREDIR, YAP_FILENAME_MAX); out2 = MkAtomTerm(Yap_LookupAtom(destdir)); } else { out2 = MkAtomTerm(Yap_LookupAtom(YAP_SHAREDIR)); } if (env_destdir) { strncat(destdir, env_destdir, YAP_FILENAME_MAX); strncat(destdir, "/" YAP_BINDIR, YAP_FILENAME_MAX); out3 = MkAtomTerm(Yap_LookupAtom(destdir)); } else { out3 = MkAtomTerm(Yap_LookupAtom(YAP_BINDIR)); } return (Yap_unify(out1, ARG1) && Yap_unify(out2, ARG2) && Yap_unify(out3, ARG3)); } static Int p_log_event(USES_REGS1) { Term in = Deref(ARG1); Atom at; if (IsVarTerm(in)) return FALSE; if (!IsAtomTerm(in)) return FALSE; at = AtomOfTerm(in); #if DEBUG if (IsWideAtom(at)) fprintf(stderr, "LOG %S\n", RepAtom(at)->WStrOfAE); else if (IsBlob(at)) return FALSE; else fprintf(stderr, "LOG %s\n", RepAtom(at)->StrOfAE); #endif if (IsWideAtom(at) || IsBlob(at)) return FALSE; LOG(" %s ", RepAtom(at)->StrOfAE); return TRUE; } static Int p_env_separator(USES_REGS1) { #if defined(_WIN32) return Yap_unify(MkIntegerTerm(';'), ARG1); #else return Yap_unify(MkIntegerTerm(':'), ARG1); #endif } /* * This is responsable for the initialization of all machine dependant * predicates */ void Yap_InitSysbits(int wid) { CACHE_REGS #if __simplescalar__ { char *pwd = getenv("PWD"); strncpy(GLOBAL_pwd, pwd, YAP_FILENAME_MAX); } #endif Yap_InitWTime(); Yap_InitRandom(); /* let the caller control signals as it sees fit */ Yap_InitOSSignals(worker_id); } static Int p_unix(USES_REGS1) { #ifdef unix return TRUE; #else #ifdef __unix__ return TRUE; #else #ifdef __APPLE__ return TRUE; #else return FALSE; #endif #endif #endif } static Int p_win32(USES_REGS1) { #ifdef _WIN32 return TRUE; #else #ifdef __CYGWIN__ return TRUE; #else return FALSE; #endif #endif } static Int p_ld_path(USES_REGS1) { return Yap_unify(ARG1, MkAtomTerm(Yap_LookupAtom(YAP_LIBDIR))); } static Int p_address_bits(USES_REGS1) { #if SIZEOF_INT_P == 4 return Yap_unify(ARG1, MkIntTerm(32)); #else return Yap_unify(ARG1, MkIntTerm(64)); #endif } #ifdef _WIN32 /* This code is from SWI-Prolog by Jan Wielemaker */ #define wstreq(s, q) (wcscmp((s), (q)) == 0) static HKEY reg_open_key(const wchar_t *which, int create) { HKEY key = HKEY_CURRENT_USER; DWORD disp; LONG rval; while (*which) { wchar_t buf[256]; wchar_t *s; HKEY tmp; for (s = buf; *which && !(*which == '/' || *which == '\\');) *s++ = *which++; *s = '\0'; if (*which) which++; if (wstreq(buf, L"HKEY_CLASSES_ROOT")) { key = HKEY_CLASSES_ROOT; continue; } else if (wstreq(buf, L"HKEY_CURRENT_USER")) { key = HKEY_CURRENT_USER; continue; } else if (wstreq(buf, L"HKEY_LOCAL_MACHINE")) { key = HKEY_LOCAL_MACHINE; continue; } else if (wstreq(buf, L"HKEY_USERS")) { key = HKEY_USERS; continue; } if (RegOpenKeyExW(key, buf, 0L, KEY_READ, &tmp) == ERROR_SUCCESS) { RegCloseKey(key); key = tmp; continue; } if (!create) return NULL; rval = RegCreateKeyExW(key, buf, 0, L"", 0, KEY_ALL_ACCESS, NULL, &tmp, &disp); RegCloseKey(key); if (rval == ERROR_SUCCESS) key = tmp; else return NULL; } return key; } #define MAXREGSTRLEN 1024 static void recover_space(wchar_t *k, Atom At) { if (At->WStrOfAE != k) Yap_FreeCodeSpace((char *)k); } static wchar_t *WideStringFromAtom(Atom KeyAt USES_REGS) { if (IsWideAtom(KeyAt)) { return KeyAt->WStrOfAE; } else { int len = strlen(KeyAt->StrOfAE); int sz = sizeof(wchar_t) * (len + 1); char *chp = KeyAt->StrOfAE; wchar_t *kptr, *k; k = (wchar_t *)Yap_AllocCodeSpace(sz); while (k == NULL) { if (!Yap_growheap(false, sz, NULL)) { Yap_Error(RESOURCE_ERROR_HEAP, MkIntegerTerm(sz), "generating key in win_registry_get_value/3"); return false; } k = (wchar_t *)Yap_AllocCodeSpace(sz); } kptr = k; while ((*kptr++ = *chp++)) ; return k; } } static Int p_win_registry_get_value(USES_REGS1) { DWORD type; BYTE data[MAXREGSTRLEN]; DWORD len = sizeof(data); wchar_t *k, *name; HKEY key; Term Key = Deref(ARG1); Term Name = Deref(ARG2); Atom KeyAt, NameAt; if (IsVarTerm(Key)) { Yap_Error(INSTANTIATION_ERROR, Key, "argument to win_registry_get_value unbound"); return FALSE; } if (!IsAtomTerm(Key)) { Yap_Error(TYPE_ERROR_ATOM, Key, "argument to win_registry_get_value"); return FALSE; } KeyAt = AtomOfTerm(Key); if (IsVarTerm(Name)) { Yap_Error(INSTANTIATION_ERROR, Key, "argument to win_registry_get_value unbound"); return FALSE; } if (!IsAtomTerm(Name)) { Yap_Error(TYPE_ERROR_ATOM, Key, "argument to win_registry_get_value"); return FALSE; } NameAt = AtomOfTerm(Name); k = WideStringFromAtom(KeyAt PASS_REGS); if (!(key = reg_open_key(k, FALSE))) { Yap_Error(EXISTENCE_ERROR_KEY, Key, "argument to win_registry_get_value"); recover_space(k, KeyAt); return FALSE; } name = WideStringFromAtom(NameAt PASS_REGS); if (RegQueryValueExW(key, name, NULL, &type, data, &len) == ERROR_SUCCESS) { RegCloseKey(key); switch (type) { case REG_SZ: recover_space(k, KeyAt); recover_space(name, NameAt); ((wchar_t *)data)[len] = '\0'; return Yap_unify(MkAtomTerm(Yap_LookupMaybeWideAtom((wchar_t *)data)), ARG3); case REG_DWORD: recover_space(k, KeyAt); recover_space(name, NameAt); { DWORD *d = (DWORD *)data; return Yap_unify(MkIntegerTerm((Int)d[0]), ARG3); } default: recover_space(k, KeyAt); recover_space(name, NameAt); return FALSE; } } recover_space(k, KeyAt); recover_space(name, NameAt); return FALSE; } char *Yap_RegistryGetString(char *name) { DWORD type; BYTE data[MAXREGSTRLEN]; DWORD len = sizeof(data); HKEY key; char *ptr; int i; #if SIZEOF_INT_P == 8 if (!(key = reg_open_key(L"HKEY_LOCAL_MACHINE/SOFTWARE/YAP/Prolog64", FALSE))) { return NULL; } #else if (!(key = reg_open_key(L"HKEY_LOCAL_MACHINE/SOFTWARE/YAP/Prolog", FALSE))) { return NULL; } #endif if (RegQueryValueEx(key, name, NULL, &type, data, &len) == ERROR_SUCCESS) { RegCloseKey(key); switch (type) { case REG_SZ: ptr = malloc(len + 2); if (!ptr) return NULL; for (i = 0; i <= len; i++) ptr[i] = data[i]; ptr[len + 1] = '\0'; return ptr; default: return NULL; } } return NULL; } #endif void Yap_InitSysPreds(void) { Yap_InitCPred("log_event", 1, p_log_event, SafePredFlag | SyncPredFlag); Yap_InitCPred("sh", 0, p_sh, SafePredFlag | SyncPredFlag); Yap_InitCPred("$shell", 1, p_shell, SafePredFlag | SyncPredFlag); Yap_InitCPred("system", 1, p_system, SafePredFlag | SyncPredFlag | UserCPredFlag); Yap_InitCPred("$rename", 2, p_mv, SafePredFlag | SyncPredFlag); Yap_InitCPred("$yap_home", 1, p_yap_home, SafePredFlag); Yap_InitCPred("$yap_paths", 3, p_yap_paths, SafePredFlag); Yap_InitCPred("$dir_separator", 1, p_dir_sp, SafePredFlag); Yap_InitCPred("libraries_directories", 2, libraries_directories, 0); Yap_InitCPred("system_library", 1, system_library, 0); Yap_InitCPred("commons_library", 1, commons_library, 0); Yap_InitCPred("$getenv", 2, p_getenv, SafePredFlag); Yap_InitCPred("$putenv", 2, p_putenv, SafePredFlag | SyncPredFlag); Yap_InitCPred("$host_type", 1, p_host_type, SafePredFlag | SyncPredFlag); Yap_InitCPred("$env_separator", 1, p_env_separator, SafePredFlag); Yap_InitCPred("$unix", 0, p_unix, SafePredFlag); Yap_InitCPred("$win32", 0, p_win32, SafePredFlag); Yap_InitCPred("$ld_path", 1, p_ld_path, SafePredFlag); Yap_InitCPred("$address_bits", 1, p_address_bits, SafePredFlag); Yap_InitCPred("$expand_file_name", 2, p_expand_file_name, SyncPredFlag); Yap_InitCPred("expand_file_name", 3, expand_file_name3, SyncPredFlag); Yap_InitCPred("expand_file_name", 2, expand_file_name, SyncPredFlag); Yap_InitCPred("working_directory", 2, working_directory, SyncPredFlag); Yap_InitCPred("prolog_to_os_filename", 2, prolog_to_os_filename, SyncPredFlag); Yap_InitCPred("absolute_file_system_path", 2, absolute_file_system_path, 0); Yap_InitCPred("real_path", 2, real_path, 0); Yap_InitCPred("true_file_name", 2, true_file_name, SyncPredFlag); Yap_InitCPred("true_file_name", 3, true_file_name3, SyncPredFlag); #ifdef _WIN32 Yap_InitCPred("win_registry_get_value", 3, p_win_registry_get_value, 0); #endif Yap_InitCPred("rmdir", 2, p_rmdir, SyncPredFlag); Yap_InitCPred("make_directory", 1, make_directory, SyncPredFlag); }