/* Open and close files for bison,
- Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.
-
-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 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. */
-
-
-#if defined (VMS) & !defined (__VMS_POSIX)
-#include <ssdef.h>
-#define unlink delete
-#ifndef XPFILE
-#define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
-#endif
-#ifndef XPFILE1
-#define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
-#endif
-#endif
-
-#if defined (_MSC_VER)
-#ifndef XPFILE
-#define XPFILE "c:/usr/local/lib/bison.simple"
-#endif
-#ifndef XPFILE1
-#define XPFILE1 "c:/usr/local/lib/bison.hairy"
-#endif
-#endif
-
-#include <stdio.h>
+ Copyright 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
+
+ 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 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, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+
#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;
-/* File name specified with -o for the output file, or 0 if no -o. */
-char *spec_outfile;
+struct obstack action_obstack;
+struct obstack attrs_obstack;
+struct obstack table_obstack;
+struct obstack defines_obstack;
+struct obstack guard_obstack;
+struct obstack output_obstack;
+
+char *spec_outfile; /* for -o. */
+char *spec_file_prefix; /* for -b. */
+char *spec_name_prefix; /* for -p. */
char *infile;
-char *outfile;
-char *defsfile;
-char *tabfile;
char *attrsfile;
-char *guardfile;
-char *actfile;
-char *tmpattrsfile;
-char *tmptabfile;
-char *tmpdefsfile;
-
-extern int noparserflag;
-
-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;
+
+/* C source file extension (the parser source). */
+static char *src_extension;
+/* Header file extension (if option ``-d'' is specified). */
+static char *header_extension;
+
\f
+/*--------------------------.
+| Is SUFFIX ending STRING? |
+`--------------------------*/
-char*
-stringappend(string1, end1, string2)
-char *string1;
-int end1;
-char *string2;
+static int
+strsuffix (const char *string, const char *suffix)
{
- register char *ostring;
- register char *cp, *cp1;
- register int i;
+ 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;
+}
+
- cp = string2; i = 0;
- while (*cp++) i++;
+/*-----------------------------------------------------------------.
+| Return a newly allocated string composed of the concatenation of |
+| STRING1, and STRING2. |
+`-----------------------------------------------------------------*/
- ostring = NEW2(i+end1+1, char);
+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;
+}
- cp = ostring;
- cp1 = string1;
- for (i = 0; i < end1; i++)
- *cp++ = *cp1++;
+/*-----------------------------------------------------------------.
+| Try to open file NAME with mode MODE, and print an error message |
+| if fails. |
+`-----------------------------------------------------------------*/
- cp1 = string2;
- while (*cp++ = *cp1++) ;
+FILE *
+xfopen (const char *name, const char *mode)
+{
+ FILE *ptr;
- return ostring;
+ ptr = fopen (name, mode);
+ if (!ptr)
+ error (2, errno, _("cannot open file `%s'"), name);
+
+ return ptr;
}
+/*-------------------------------------------------------------.
+| Try to close file PTR, and print an error message if fails. |
+`-------------------------------------------------------------*/
-/* 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()
+int
+xfclose (FILE *ptr)
{
- 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;
+ int result;
-#ifdef MSDOS
- tmp_base = getenv ("TMP");
- if (tmp_base == 0)
- tmp_base = "";
- strlwr (infile);
-#endif /* MSDOS */
+ if (ptr == NULL)
+ return 0;
- tmp_len = strlen (tmp_base);
+ result = fclose (ptr);
+ if (result == EOF)
+ error (2, errno, _("cannot close file"));
- 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);
-#endif /* MSDOS */
- /* BASE_LENGTH includes ".tab" but not ".c". */
- base_length = strlen (name_base);
- if (!strcmp (name_base + base_length - 2, ".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))
- 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. */
+ return result;
+}
- name_base = fixed_outfiles ? "y.y" : infile;
+/*--------------------------------------------------.
+| Save the content of the obstack OBS in FILENAME. |
+`--------------------------------------------------*/
- /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any. */
+static void
+obstack_save (struct obstack *obs, const char *filename)
+{
+ FILE *out = xfopen (filename, "w");
+ size_t size = obstack_object_size (obs);
+ fwrite (obstack_finish (obs), 1, size, out);
+ xfclose (out);
+}
- base_length = strlen (name_base);
- if (!strcmp (name_base + base_length - 2, ".y"))
- base_length -= 2;
- short_base_length = 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 the path to the skeleton which locaction might be given in |
+| ENVVAR, otherwise return SKELETON. |
+`------------------------------------------------------------------*/
- finput = tryopen(infile, "r");
+const char *
+skeleton_find (const char *envvar, const char *skeleton)
+{
+ const char *res = getenv (envvar);
- if (! noparserflag)
- {
- 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)
- {
- filename = xmalloc(strlen(cp) + strlen(PFILE) + 2);
- strcpy(filename, cp);
- cp = filename + strlen(filename);
- *cp++ = '/';
- strcpy(cp, PFILE);
- }
-#endif /* MSDOS */
- fparser = tryopen(filename ? filename : PFILE, "r");
- }
+ const char *cp;
- if (verboseflag)
+ /* File doesn't exist in current directory; try in INIT directory. */
+ if (!res && (cp = getenv ("INIT")))
{
-#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");
+ res = XMALLOC (char, strlen (cp) + strlen (skeleton) + 2);
+ sprintf (res, "%s%c%s", cp, '/', skeleton);
}
+#endif /* !MSDOS */
- if (noparserflag)
- {
- /* use permanent name for actions file */
- actfile = stringappend(name_base, short_base_length, ".act");
- faction = tryopen(actfile, "w");
- }
+ if (!res)
+ res = skeleton;
-#ifdef MSDOS
- if (! noparserflag)
- 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
- if (! noparserflag)
- 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 */
-
- if (! noparserflag)
- 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+");
- }
-
-#ifndef MSDOS
- if (! noparserflag)
- unlink(actfile);
- unlink(tmpattrsfile);
- unlink(tmptabfile);
- unlink(tmpdefsfile);
-#endif
-
- /* 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");
+ return res;
+}
-#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 */
+\f
+/*----------------------------------------------------------------.
+| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. |
+`----------------------------------------------------------------*/
+
+/* Replace all characters FROM by TO in the string IN.
+ and returns a new allocated string. */
+static char *
+tr(const char *in, char from, char to)
+{
+ char *temp;
+ char *out;
+
+ out = XMALLOC (char, strlen (in) + 1);
+
+ for (temp = out; *in; in++, out++)
+ if (*in == from)
+ *out = to;
+ else
+ *out = *in;
+ *out = 0;
+ return (temp);
}
+/* Gets the extension index in FILENAME. Returns 0 if fails to
+ find an extension. */
+static int
+get_extension_index(const char *filename)
+{
+ int len;
+ len = strlen (filename);
+
+ if (filename[len-- - 1] == '.')
+ return (0);
-/* open the output files needed only for the semantic parser.
-This is done when %semantic_parser is seen in the declarations section. */
+ while ((len > 0) && (filename[len - 1] != '.'))
+ if (filename[len - 1] == '/')
+ return (0);
+ else
+ len--;
-void
-open_extra_files()
+ return (len - 1);
+}
+
+/* Computes extensions from the grammar file extension. */
+static void
+compute_exts_from_gf(const char *ext)
{
- FILE *ftmp;
- int c;
- char *filename, *cp;
+ src_extension = tr(ext, 'y', 'c');
+ src_extension = tr(src_extension, 'Y', 'C');
+ header_extension = tr(ext, 'y', 'h');
+ header_extension = tr(header_extension, 'Y', 'H');
+}
- if (fparser)
- fclose(fparser);
+/* Computes extensions from the given c source file extension. */
+static void
+compute_exts_from_src(const char *ext)
+{
+ src_extension = xstrdup(ext);
+ header_extension = tr(ext, 'c', 'h');
+ header_extension = tr(header_extension, 'C', 'H');
+}
+
+/* FIXME: Should use xstrndup. */
- if (! noparserflag)
+static void
+compute_base_names (void)
+{
+ size_t base_length;
+ size_t short_base_length;
+ size_t ext_index;
+
+ /* Set default extensions */
+ src_extension = ".c";
+ header_extension = ".h";
+
+ /* 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)
{
- 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");
+ strlwr (spec_outfile);
+#endif /* MSDOS */
+ /* BASE_LENGTH includes ".tab" but not ".c". */
+ base_length = strlen (spec_outfile);
+
+ ext_index = get_extension_index (spec_outfile);
+ /* if the initial segment of extension contains 'c' or a 'C', I assume
+ that it is a C or C++ source file */
+ if (ext_index)
+ ext_index = (strspn(spec_outfile + ext_index + 1, "cC")) ? ext_index : 0;
+ if (ext_index)
+ {
+ base_length -= strlen (spec_outfile + ext_index);
+ compute_exts_from_src(spec_outfile + ext_index);
+ }
+
+ base_name = strndup (spec_outfile, base_length);
+ /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */
+ short_base_length = base_length;
+ if (strsuffix (base_name, ".tab") || strsuffix (base_name, "_tab"))
+ short_base_length -= 4;
+ short_base_name = strndup (spec_outfile, short_base_length);
+
+ return;
}
- /* 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 --file-prefix=foo was specified, BASE_NAME and SHORT_BASE_NAME
+ are `foo'.
- fguard = tryopen(guardfile, "w");
+ Construct names from it. */
+ if (spec_file_prefix)
+ {
+#ifdef MSDOS
+ strlwr (spec_file_prefix);
+#endif /* MSDOS */
+ short_base_name = xstrdup (spec_file_prefix);
+ base_name = XMALLOC (char,
+ strlen (short_base_name) + strlen (EXT_TAB) + 1);
+ stpcpy (stpcpy (base_name, short_base_name), EXT_TAB);
+ return;
+ }
+
+ /* 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'.
+
+ If --yacc is used, do as if the input file was `y.y'. */
+ {
+ const char *name_base = yacc_flag ? "y.y" : infile;
+
+ /* BASE_LENGTH gets length of BASE_NAME, sans ".y" suffix if any. */
+
+ base_length = strlen (name_base);
+
+ ext_index = get_extension_index (name_base);
+ /* if the initial segment of extension contains a 'y' or a 'Y', I assume
+ that it is a yacc or bison grammar file */
+ if (ext_index)
+ ext_index = (strspn(name_base + ext_index + 1, "yY")) ? ext_index : 0;
+ if (ext_index)
+ {
+ base_length -= strlen (name_base + ext_index);
+ compute_exts_from_gf(name_base + ext_index);
+ }
+
+ 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;
+ }
}
- /* 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;
+/*-----------------------------------------------------------------.
+| Open the input file. Look for the skeletons. Find the names of |
+| the output files. Prepare the obstacks. |
+`-----------------------------------------------------------------*/
- ptr = fopen(name, mode);
- if (ptr == NULL)
- {
- fprintf(stderr, "%s: ", program_name);
- perror(name);
- done(2);
- }
- return ptr;
+void
+open_files (void)
+{
+ finput = xfopen (infile, "r");
+
+ /* Initialize the obstacks. */
+ obstack_init (&action_obstack);
+ obstack_init (&attrs_obstack);
+ obstack_init (&table_obstack);
+ obstack_init (&defines_obstack);
+ obstack_init (&guard_obstack);
+ obstack_init (&output_obstack);
}
+
+
+/*-----------------------------------------------------.
+| Close the open files, produce all the output files. |
+`-----------------------------------------------------*/
+
void
-done(k)
-int k;
+output_files (void)
{
- if (faction)
- fclose(faction);
+ xfclose (finput);
- if (fattrs)
- fclose(fattrs);
+ compute_base_names ();
- if (fguard)
- fclose(fguard);
+ attrsfile = stringappend (short_base_name, EXT_STYPE_H);
+#ifndef MSDOS
+ stringappend (attrsfile, header_extension);
+#endif /* MSDOS */
- if (finput)
- fclose(finput);
+ /* Output the main file. */
+ if (spec_outfile)
+ obstack_save (&table_obstack, spec_outfile);
+ else
+ obstack_save (&table_obstack, stringappend (base_name, src_extension));
- if (fparser)
- fclose(fparser);
+ /* Output the header file if wanted. */
+ if (defines_flag)
+ obstack_save (&defines_obstack, stringappend (base_name, header_extension));
- if (foutput)
- fclose(foutput);
+ /* If we output only the table, dump the actions in ACTFILE. */
+ if (no_parser_flag)
+ obstack_save (&action_obstack, stringappend (short_base_name, ".act"));
- /* JF write out the output file */
- if (k == 0 && ftable)
+ /* If we produced a semantic parser ATTRS_OBSTACK must be dumped
+ into its own file, ATTTRSFILE. */
+ if (semantic_parser)
{
- 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);
- }
- }
+ char *temp_name;
-#if defined (VMS) & !defined (__VMS_POSIX)
- if (faction && ! noparserflag)
- 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 && ! noparserflag) unlink(actfile);
- if (tmpattrsfile) unlink(tmpattrsfile);
- if (tmptabfile) unlink(tmptabfile);
- if (tmpdefsfile) unlink(tmpdefsfile);
+ obstack_save (&attrs_obstack, attrsfile);
+ temp_name = stringappend (short_base_name, EXT_GUARD_C);
+#ifndef MSDOS
+ temp_name = stringappend (temp_name, src_extension);
#endif /* MSDOS */
- exit(k);
-#endif /* not VMS, or __VMS_POSIX */
+ obstack_save (&guard_obstack, temp_name);
+ }
+
+ if (verbose_flag)
+ /* We used to use just .out if spec_name_prefix (-p) was used, but
+ that conflicts with Posix. */
+ obstack_save (&output_obstack, stringappend (short_base_name, EXT_OUTPUT));
}
projects / bison.git / blobdiff