X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/fcca25ad3cb7b800a5dddeaafb1743fc273cdb61..27110317b8a2d2a4008e41be26e2f0c76416cbc8:/src/files.c diff --git a/src/files.c b/src/files.c index 020111f5..235deb03 100644 --- a/src/files.c +++ b/src/files.c @@ -1,394 +1,298 @@ /* Open and close files for bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. + Copyright 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc. -This file is part of Bison, the GNU Compiler Compiler. + This file is part of Bison, the GNU Compiler Compiler. -Bison is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + Bison is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. -Bison 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. + Bison 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 Bison; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with Bison; see the file COPYING. If not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ -#if defined (VMS) & !defined (__VMS_POSIX) -#include -#define unlink delete -#ifndef XPFILE -#define XPFILE "GNU_BISON:[000000]BISON.SIMPLE" -#endif -#ifndef XPFILE1 -#define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY" -#endif -#endif - -#include #include "system.h" +#include "getargs.h" #include "files.h" -#include "new.h" +#include "xalloc.h" #include "gram.h" +#include "complain.h" FILE *finput = NULL; FILE *foutput = NULL; -FILE *fdefines = NULL; -FILE *ftable = NULL; -FILE *fattrs = NULL; FILE *fguard = NULL; -FILE *faction = NULL; -FILE *fparser = NULL; + +struct obstack action_obstack; +struct obstack attrs_obstack; +struct obstack table_obstack; +struct obstack defines_obstack; /* File name specified with -o for the output file, or 0 if no -o. */ char *spec_outfile; char *infile; -char *outfile; -char *defsfile; -char *tabfile; char *attrsfile; char *guardfile; -char *actfile; -char *tmpattrsfile; -char *tmptabfile; -char *tmpdefsfile; - -extern char *mktemp(); /* So the compiler won't complain */ -extern char *getenv(); -extern void perror(); -FILE *tryopen(); /* This might be a good idea */ -void done(); - -extern char *program_name; -extern int verboseflag; -extern int definesflag; -int fixed_outfiles = 0; + +static char *base_name; +static char *short_base_name; + +/*--------------------------. +| Is SUFFIX ending STRING? | +`--------------------------*/ + +static int +strsuffix (const char *string, const char *suffix) +{ + size_t string_len = strlen (string); + size_t suffix_len = strlen (suffix); + if (suffix_len <= string_len) + return !strcmp (string + string_len - suffix_len, suffix); + else + return 0; +} + + +/*-----------------------------------------------------------------. +| Return a newly allocated string composed of the concatenation of | +| STRING1, and STRING2. | +`-----------------------------------------------------------------*/ + +static char * +stringappend (const char *string1, const char *string2) +{ + size_t len = strlen (string1) + strlen (string2); + char *res = XMALLOC (char, len + 1); + char *cp; + cp = stpcpy (res, string1); + cp = stpcpy (cp, string2); + return res; +} + +/*-----------------------------------------------------------------. +| Try to open file NAME with mode MODE, and print an error message | +| if fails. | +`-----------------------------------------------------------------*/ -char* -stringappend(string1, end1, string2) -char *string1; -int end1; -char *string2; +FILE * +xfopen (const char *name, const char *mode) { - register char *ostring; - register char *cp, *cp1; - register int i; + FILE *ptr; + + ptr = fopen (name, mode); + if (!ptr) + error (2, errno, _("cannot open file `%s'"), name); + + return ptr; +} - cp = string2; i = 0; - while (*cp++) i++; +/*-------------------------------------------------------------. +| Try to close file PTR, and print an error message if fails. | +`-------------------------------------------------------------*/ - ostring = NEW2(i+end1+1, char); +int +xfclose (FILE *ptr) +{ + int result; - cp = ostring; - cp1 = string1; - for (i = 0; i < end1; i++) - *cp++ = *cp1++; + if (ptr == NULL) + return 0; - cp1 = string2; - while (*cp++ = *cp1++) ; + result = fclose (ptr); + if (result == EOF) + error (2, errno, _("cannot close file")); - return ostring; + return result; } +/*--------------------------------------------------. +| Save the content of the obstack OBS in FILENAME. | +`--------------------------------------------------*/ -/* JF this has been hacked to death. Nowaday it sets up the file names for - the output files, and opens the tmp files and the parser */ -void -openfiles() +static void +obstack_save (struct obstack *obs, const char *filename) { - char *name_base; - register char *cp; - char *filename; - int base_length; - int short_base_length; - -#if defined (VMS) & !defined (__VMS_POSIX) - char *tmp_base = "sys$scratch:b_"; -#else - char *tmp_base = "/tmp/b."; -#endif - int tmp_len; + FILE *out = xfopen (filename, "w"); + size_t size = obstack_object_size (obs); + fwrite (obstack_finish (obs), 1, size, out); + xfclose (out); +} + + +/*------------------------------------------------------------------. +| Return the path to the skeleton which locaction might be given in | +| ENVVAR, otherwise return SKELETON. | +`------------------------------------------------------------------*/ + +const char * +skeleton_find (const char *envvar, const char *skeleton) +{ + const char *res = getenv (envvar); #ifdef MSDOS - tmp_base = getenv ("TMP"); - if (tmp_base == 0) - tmp_base = ""; - strlwr (infile); -#endif /* MSDOS */ + const char *cp; + + /* File doesn't exist in current directory; try in INIT directory. */ + if (!res && (cp = getenv ("INIT"))) + { + res = XMALLOC (char, strlen (cp) + strlen (skeleton) + 2); + sprintf (res, "%s%c%s", cp, '/', skeleton); + } +#endif /* !MSDOS */ + + if (!res) + res = skeleton; - tmp_len = strlen (tmp_base); + return res; +} + + +/*----------------------------------------. +| Compute BASE_NAME and SHORT_BASE_NAME. | +`----------------------------------------*/ +/* FIXME: Should use xstrndup. */ + +static void +compute_base_names (void) +{ + size_t base_length; + size_t short_base_length; + + /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c), + BASE_NAME and SHORT_BASE_NAME are `foo'. + + If --output=foo.tab.c was specified, BASE_NAME is `foo.tab' and + SHORT_BASE_NAME is `foo'. + + The precise -o name will be used for FTABLE. For other output + files, remove the ".c" or ".tab.c" suffix. */ if (spec_outfile) { - /* -o was specified. The precise -o name will be used for ftable. - For other output files, remove the ".c" or ".tab.c" suffix. */ - name_base = spec_outfile; #ifdef MSDOS - strlwr (name_base); + strlwr (spec_outfile); #endif /* MSDOS */ /* BASE_LENGTH includes ".tab" but not ".c". */ - base_length = strlen (name_base); - if (!strcmp (name_base + base_length - 2, ".c")) + base_length = strlen (spec_outfile); + if (strsuffix (spec_outfile, ".c")) base_length -= 2; /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */ short_base_length = base_length; - if (!strncmp (name_base + short_base_length - 4, ".tab", 4)) - short_base_length -= 4; - else if (!strncmp (name_base + short_base_length - 4, "_tab", 4)) + if (strsuffix (spec_outfile, ".tab") || strsuffix (spec_outfile, "_tab")) short_base_length -= 4; - } - else if (spec_file_prefix) - { - /* -b was specified. Construct names from it. */ - /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */ - short_base_length = strlen (spec_file_prefix); - /* Count room for `.tab'. */ - base_length = short_base_length + 4; - name_base = (char *) xmalloc (base_length + 1); - /* Append `.tab'. */ - strcpy (name_base, spec_file_prefix); -#ifdef VMS - strcat (name_base, "_tab"); -#else - strcat (name_base, ".tab"); -#endif -#ifdef MSDOS - strlwr (name_base); -#endif /* MSDOS */ - } - else - { - /* -o was not specified; compute output file name from input - or use y.tab.c, etc., if -y was specified. */ - - name_base = fixed_outfiles ? "y.y" : infile; - - /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any. */ - - base_length = strlen (name_base); - if (!strcmp (name_base + base_length - 2, ".y")) - base_length -= 2; - short_base_length = base_length; + base_name = strndup (spec_outfile, base_length); + short_base_name = strndup (spec_outfile, short_base_length); -#ifdef VMS - name_base = stringappend(name_base, short_base_length, "_tab"); -#else -#ifdef MSDOS - name_base = stringappend(name_base, short_base_length, "_tab"); -#else - name_base = stringappend(name_base, short_base_length, ".tab"); -#endif /* not MSDOS */ -#endif - base_length = short_base_length + 4; + return; } - finput = tryopen(infile, "r"); + /* If --file-prefix=foo was specified, BASE_NAME and SHORT_BASE_NAME + are `foo'. - filename = getenv("BISON_SIMPLE"); -#ifdef MSDOS - /* File doesn't exist in current directory; try in INIT directory. */ - cp = getenv("INIT"); - if (filename == 0 && cp != NULL) + Construct names from it. */ + if (spec_file_prefix) { - filename = xmalloc(strlen(cp) + strlen(PFILE) + 2); - strcpy(filename, cp); - cp = filename + strlen(filename); - *cp++ = '/'; - strcpy(cp, PFILE); - } +#ifdef MSDOS + strlwr (spec_file_prefix); #endif /* MSDOS */ - fparser = tryopen(filename ? filename : PFILE, "r"); + short_base_name = xstrdup (spec_file_prefix); - if (verboseflag) - { -#ifdef MSDOS - outfile = stringappend(name_base, short_base_length, ".out"); -#else - /* We used to use just .out if spec_name_prefix (-p) was used, - but that conflicts with Posix. */ - outfile = stringappend(name_base, short_base_length, ".output"); -#endif - foutput = tryopen(outfile, "w"); - } + base_name = XMALLOC (char, + strlen (short_base_name) + strlen (EXT_TAB) + 1); + stpcpy (stpcpy (base_name, short_base_name), EXT_TAB); -#ifdef MSDOS - actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX")); - tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX")); - tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX")); - tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX")); -#else - actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX")); - tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX")); - tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX")); - tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX")); -#endif /* not MSDOS */ - - faction = tryopen(actfile, "w+"); - fattrs = tryopen(tmpattrsfile,"w+"); - ftable = tryopen(tmptabfile, "w+"); - - if (definesflag) - { - defsfile = stringappend(name_base, base_length, ".h"); - fdefines = tryopen(tmpdefsfile, "w+"); + return; } -#ifndef MSDOS - unlink(actfile); - unlink(tmpattrsfile); - unlink(tmptabfile); - unlink(tmpdefsfile); -#endif + /* If neither -o nor --file-prefix were specified, and the input + file is foo.y, BASE_NAME is `foo.tab', and SHORT_BASE_NAME is + `foo'. - /* These are opened by `done' or `open_extra_files', if at all */ - if (spec_outfile) - tabfile = spec_outfile; - else - tabfile = stringappend(name_base, base_length, ".c"); + If --yacc is used, do as if the input file was `y.y'. */ + { + const char *name_base = yacc_flag ? "y.y" : infile; -#ifdef VMS - attrsfile = stringappend(name_base, short_base_length, "_stype.h"); - guardfile = stringappend(name_base, short_base_length, "_guard.c"); -#else -#ifdef MSDOS - attrsfile = stringappend(name_base, short_base_length, ".sth"); - guardfile = stringappend(name_base, short_base_length, ".guc"); -#else - attrsfile = stringappend(name_base, short_base_length, ".stype.h"); - guardfile = stringappend(name_base, short_base_length, ".guard.c"); -#endif /* not MSDOS */ -#endif /* not VMS */ -} + /* BASE_LENGTH gets length of BASE_NAME, sans ".y" suffix if any. */ + + base_length = strlen (name_base); + if (strsuffix (name_base, ".y")) + base_length -= 2; + short_base_length = base_length; + short_base_name = strndup (name_base, short_base_length); + base_name = XMALLOC (char, + strlen (short_base_name) + strlen (EXT_TAB) + 1); + stpcpy (stpcpy (base_name, short_base_name), EXT_TAB); + return; + } +} -/* open the output files needed only for the semantic parser. -This is done when %semantic_parser is seen in the declarations section. */ +/*-----------------------------------------------------------------. +| Open the input file. Look for the skeletons. Find the names of | +| the output files. Prepare the obstacks. | +`-----------------------------------------------------------------*/ void -open_extra_files() +open_files (void) { - FILE *ftmp; - int c; - char *filename, *cp; - - fclose(fparser); + compute_base_names (); - filename = (char *) getenv ("BISON_HAIRY"); -#ifdef MSDOS - /* File doesn't exist in current directory; try in INIT directory. */ - cp = getenv("INIT"); - if (filename == 0 && cp != NULL) - { - filename = xmalloc(strlen(cp) + strlen(PFILE1) + 2); - strcpy(filename, cp); - cp = filename + strlen(filename); - *cp++ = '/'; - strcpy(cp, PFILE1); - } -#endif - fparser= tryopen(filename ? filename : PFILE1, "r"); + finput = xfopen (infile, "r"); - /* JF change from inline attrs file to separate one */ - ftmp = tryopen(attrsfile, "w"); - rewind(fattrs); - while((c=getc(fattrs))!=EOF) /* Thank god for buffering */ - putc(c,ftmp); - fclose(fattrs); - fattrs=ftmp; + if (verbose_flag) + /* We used to use just .out if spec_name_prefix (-p) was used, but + that conflicts with Posix. */ + foutput = xfopen (stringappend (base_name, EXT_OUTPUT), "w"); - fguard = tryopen(guardfile, "w"); + attrsfile = stringappend (short_base_name, EXT_STYPE_H); + guardfile = stringappend (short_base_name, EXT_GUARD_C); + /* Initialize the obstacks. */ + obstack_init (&action_obstack); + obstack_init (&attrs_obstack); + obstack_init (&table_obstack); + obstack_init (&defines_obstack); } - /* JF to make file opening easier. This func tries to open file - NAME with mode MODE, and prints an error message if it fails. */ -FILE * -tryopen(name, mode) -char *name; -char *mode; -{ - FILE *ptr; - ptr = fopen(name, mode); - if (ptr == NULL) - { - fprintf(stderr, "%s: ", program_name); - perror(name); - done(2); - } - return ptr; -} + +/*-----------------------------------------------------. +| Close the open files, produce all the output files. | +`-----------------------------------------------------*/ void -done(k) -int k; +output_files (void) { - if (faction) - fclose(faction); - - if (fattrs) - fclose(fattrs); + xfclose (fguard); + xfclose (finput); + xfclose (foutput); - if (fguard) - fclose(fguard); - - if (finput) - fclose(finput); - - if (fparser) - fclose(fparser); + /* Output the main file. */ + if (spec_outfile) + obstack_save (&table_obstack, spec_outfile); + else + obstack_save (&table_obstack, stringappend (base_name, ".c")); - if (foutput) - fclose(foutput); + /* Output the header file if wanted. */ + if (defines_flag) + obstack_save (&defines_obstack, stringappend (base_name, ".h")); - /* JF write out the output file */ - if (k == 0 && ftable) - { - FILE *ftmp; - register int c; - - ftmp=tryopen(tabfile, "w"); - rewind(ftable); - while((c=getc(ftable)) != EOF) - putc(c,ftmp); - fclose(ftmp); - fclose(ftable); - - if (definesflag) - { - ftmp = tryopen(defsfile, "w"); - fflush(fdefines); - rewind(fdefines); - while((c=getc(fdefines)) != EOF) - putc(c,ftmp); - fclose(ftmp); - fclose(fdefines); - } - } + /* If we output only the table, dump the actions in ACTFILE. */ + if (no_parser_flag) + obstack_save (&action_obstack, stringappend (short_base_name, ".act")); -#if defined (VMS) & !defined (__VMS_POSIX) - if (faction) - delete(actfile); - if (fattrs) - delete(tmpattrsfile); - if (ftable) - delete(tmptabfile); - if (k==0) sys$exit(SS$_NORMAL); - sys$exit(SS$_ABORT); -#else -#ifdef MSDOS - if (actfile) unlink(actfile); - if (tmpattrsfile) unlink(tmpattrsfile); - if (tmptabfile) unlink(tmptabfile); - if (tmpdefsfile) unlink(tmpdefsfile); -#endif /* MSDOS */ - exit(k); -#endif /* not VMS, or __VMS_POSIX */ + /* If we produced a semantic parser ATTRS_OBSTACK must be dumped + into its own file, ATTTRSFILE. */ + if (semantic_parser) + obstack_save (&attrs_obstack, attrsfile); }