-/* Open and close files for bison,
- Copyright (C) 1984, 1986, 1989 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. */
-
-
-#ifdef VMS
-#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
-
-#include <stdio.h>
+/* Open and close files for Bison.
+
+ Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 Free Software
+ Foundation, Inc.
+
+ This file is part of Bison, the GNU Compiler Compiler.
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
#include "system.h"
+
+#include <error.h>
+#include <dirname.h>
+#include <get-errno.h>
+#include <quote.h>
+#include <quotearg.h>
+#include <stdio-safer.h>
+#include <xstrndup.h>
+
+#include "complain.h"
#include "files.h"
-#include "new.h"
+#include "getargs.h"
#include "gram.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;
-
-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;
+/* Initializing some values below (such SPEC_NAME_PREFIX to `yy') is
+ tempting, but don't do that: for the time being our handling of the
+ %directive vs --option leaves precedence to the options by deciding
+ that if a %directive sets a variable which is really set (i.e., not
+ NULL), then the %directive is ignored. As a result, %name-prefix,
+ for instance, will not be honored. */
+
+char const *spec_outfile = NULL; /* for -o. */
+char const *spec_file_prefix = NULL; /* for -b. */
+char const *spec_name_prefix = NULL; /* for -p. */
+char *spec_verbose_file = NULL; /* for --verbose. */
+char *spec_graph_file = NULL; /* for -g. */
+char *spec_xml_file = NULL; /* for -x. */
+char *spec_defines_file = NULL; /* for --defines. */
+char *parser_file_name;
+
+/* All computed output file names. */
+static char **file_names = NULL;
+static int file_names_count = 0;
+
+uniqstr grammar_file = NULL;
+uniqstr current_file = NULL;
+
+/* If --output=dir/foo.c was specified,
+ DIR_PREFIX is `dir/' and ALL_BUT_EXT and ALL_BUT_TAB_EXT are `dir/foo'.
+
+ If --output=dir/foo.tab.c was specified, DIR_PREFIX is `dir/',
+ ALL_BUT_EXT is `dir/foo.tab', and ALL_BUT_TAB_EXT is `dir/foo'.
+
+ If --output was not specified but --file-prefix=dir/foo was specified,
+ ALL_BUT_EXT = `foo.tab' and ALL_BUT_TAB_EXT = `foo'.
+
+ If neither --output nor --file was specified but the input grammar
+ is name dir/foo.y, ALL_BUT_EXT and ALL_BUT_TAB_EXT are `foo'.
+
+ If neither --output nor --file was specified, DIR_PREFIX is the
+ empty string (meaning the current directory); otherwise it is
+ `dir/'. */
+
+char *all_but_ext;
+static char *all_but_tab_ext;
+char *dir_prefix;
+
+/* C source file extension (the parser source). */
+static char *src_extension = NULL;
+/* Header file extension (if option ``-d'' is specified). */
+static char *header_extension = NULL;
\f
+/*-----------------------------------------------------------------.
+| Return a newly allocated string composed of the concatenation of |
+| STR1, and STR2. |
+`-----------------------------------------------------------------*/
-char*
-stringappend(string1, end1, string2)
-char *string1;
-int end1;
-char *string2;
+static char *
+concat2 (char const *str1, char const *str2)
{
- register char *ostring;
- register char *cp, *cp1;
- register int i;
-
- cp = string2; i = 0;
- while (*cp++) i++;
+ size_t len = strlen (str1) + strlen (str2);
+ char *res = xmalloc (len + 1);
+ char *cp;
+ cp = stpcpy (res, str1);
+ cp = stpcpy (cp, str2);
+ return res;
+}
- ostring = NEW2(i+end1+1, char);
+/*-----------------------------------------------------------------.
+| Try to open file NAME with mode MODE, and print an error message |
+| if fails. |
+`-----------------------------------------------------------------*/
- cp = ostring;
- cp1 = string1;
- for (i = 0; i < end1; i++)
- *cp++ = *cp1++;
+FILE *
+xfopen (const char *name, const char *mode)
+{
+ FILE *ptr;
- cp1 = string2;
- while (*cp++ = *cp1++) ;
+ ptr = fopen_safer (name, mode);
+ if (!ptr)
+ error (EXIT_FAILURE, get_errno (),
+ _("%s: cannot open"), quotearg_colon (name));
- return ostring;
+ 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()
+xfclose (FILE *ptr)
{
- char *name_base;
- register char *cp;
- char *filename;
- int base_length;
- int short_base_length;
-
-#ifdef VMS
- char *tmp_base = "sys$scratch:b_";
-#else
- char *tmp_base = "/tmp/b.";
-#endif
- int tmp_len;
-
-#ifdef MSDOS
- tmp_base = getenv ("TMP");
- if (tmp_base == 0)
- tmp_base = "";
- strlwr (infile);
-#endif /* MSDOS */
-
- tmp_len = strlen (tmp_base);
+ if (ptr == NULL)
+ return;
- 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)
+ if (ferror (ptr))
+ error (EXIT_FAILURE, 0, _("input/output error"));
+
+ if (fclose (ptr) != 0)
+ error (EXIT_FAILURE, get_errno (), _("cannot close file"));
+}
+\f
+
+/*------------------------------------------------------------------.
+| Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
+`------------------------------------------------------------------*/
+
+/* Compute extensions from the grammar file extension. */
+static void
+compute_exts_from_gf (const char *ext)
+{
+ if (strcmp (ext, ".y") == 0)
{
- /* -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 *) mallocate (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 */
+ src_extension = xstrdup (language->src_extension);
+ header_extension = xstrdup (language->header_extension);
}
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;
-
-#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;
+ src_extension = xstrdup (ext);
+ header_extension = xstrdup (ext);
+ tr (src_extension, 'y', 'c');
+ tr (src_extension, 'Y', 'C');
+ tr (header_extension, 'y', 'h');
+ tr (header_extension, 'Y', 'H');
}
+}
- finput = tryopen(infile, "r");
+/* Compute extensions from the given c source file extension. */
+static void
+compute_exts_from_src (const char *ext)
+{
+ /* We use this function when the user specifies `-o' or `--output',
+ so the extenions must be computed unconditionally from the file name
+ given by this option. */
+ src_extension = xstrdup (ext);
+ header_extension = xstrdup (ext);
+ tr (header_extension, 'c', 'h');
+ tr (header_extension, 'C', 'H');
+}
- filename = getenv("BISON_SIMPLE");
-#ifdef MSDOS
- /* File doesn't exist in current directory; try in INIT directory. */
- cp = getenv("INIT");
- if (filename == 0 && cp != 0)
- {
- filename = malloc(strlen(cp) + strlen(PFILE) + 2);
- strcpy(filename, cp);
- cp = filename + strlen(filename);
- *cp++ = '/';
- strcpy(cp, PFILE);
- }
-#endif /* MSDOS */
- fparser = tryopen(filename ? filename : PFILE, "r");
- 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");
- }
+/* Decompose FILE_NAME in four parts: *BASE, *TAB, and *EXT, the fourth
+ part, (the directory) is ranging from FILE_NAME to the char before
+ *BASE, so we don't need an additional parameter.
-#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+");
- }
+ *EXT points to the last period in the basename, or NULL if none.
-#ifndef MSDOS
- unlink(actfile);
- unlink(tmpattrsfile);
- unlink(tmptabfile);
- unlink(tmpdefsfile);
-#endif
+ If there is no *EXT, *TAB is NULL. Otherwise, *TAB points to
+ `.tab' or `_tab' if present right before *EXT, or is NULL. *TAB
+ cannot be equal to *BASE.
- /* 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");
-
-#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 */
-}
+ None are allocated, they are simply pointers to parts of FILE_NAME.
+ Examples:
+ '/tmp/foo.tab.c' -> *BASE = 'foo.tab.c', *TAB = '.tab.c', *EXT =
+ '.c'
+ 'foo.c' -> *BASE = 'foo.c', *TAB = NULL, *EXT = '.c'
-/* open the output files needed only for the semantic parser.
-This is done when %semantic_parser is seen in the declarations section. */
+ 'tab.c' -> *BASE = 'tab.c', *TAB = NULL, *EXT = '.c'
-void
-open_extra_files()
-{
- FILE *ftmp;
- int c;
- char *filename, *cp;
+ '.tab.c' -> *BASE = '.tab.c', *TAB = NULL, *EXT = '.c'
- fclose(fparser);
+ 'foo.tab' -> *BASE = 'foo.tab', *TAB = NULL, *EXT = '.tab'
- 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 != 0)
- {
- filename = malloc(strlen(cp) + strlen(PFILE1) + 2);
- strcpy(filename, cp);
- cp = filename + strlen(filename);
- *cp++ = '/';
- strcpy(cp, PFILE1);
- }
-#endif
- fparser= tryopen(filename ? filename : PFILE1, "r");
+ 'foo_tab' -> *BASE = 'foo_tab', *TAB = NULL, *EXT = NULL
- /* 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;
+ 'foo' -> *BASE = 'foo', *TAB = NULL, *EXT = NULL. */
- fguard = tryopen(guardfile, "w");
+static void
+file_name_split (const char *file_name,
+ const char **base, const char **tab, const char **ext)
+{
+ *base = last_component (file_name);
+
+ /* Look for the extension, i.e., look for the last dot. */
+ *ext = mbsrchr (*base, '.');
+ *tab = NULL;
+ /* If there is an extension, check if there is a `.tab' part right
+ before. */
+ if (*ext)
+ {
+ size_t baselen = *ext - *base;
+ size_t dottablen = 4;
+ if (dottablen < baselen
+ && (strncmp (*ext - dottablen, ".tab", dottablen) == 0
+ || strncmp (*ext - dottablen, "_tab", dottablen) == 0))
+ *tab = *ext - dottablen;
+ }
}
- /* 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;
+
+static void
+compute_file_name_parts (void)
{
- FILE *ptr;
+ const char *base, *tab, *ext;
- ptr = fopen(name, mode);
- if (ptr == NULL)
+ /* Compute ALL_BUT_EXT and ALL_BUT_TAB_EXT from SPEC_OUTFILE
+ or GRAMMAR_FILE.
+
+ The precise -o name will be used for FTABLE. For other output
+ files, remove the ".c" or ".tab.c" suffix. */
+ if (spec_outfile)
{
- fprintf(stderr, "%s: ", program_name);
- perror(name);
- done(2);
+ file_name_split (spec_outfile, &base, &tab, &ext);
+ dir_prefix = xstrndup (spec_outfile, base - spec_outfile);
+
+ /* ALL_BUT_EXT goes up the EXT, excluding it. */
+ all_but_ext =
+ xstrndup (spec_outfile,
+ (strlen (spec_outfile) - (ext ? strlen (ext) : 0)));
+
+ /* ALL_BUT_TAB_EXT goes up to TAB, excluding it. */
+ all_but_tab_ext =
+ xstrndup (spec_outfile,
+ (strlen (spec_outfile)
+ - (tab ? strlen (tab) : (ext ? strlen (ext) : 0))));
+
+ if (ext)
+ compute_exts_from_src (ext);
+ }
+ else
+ {
+ file_name_split (grammar_file, &base, &tab, &ext);
+
+ if (spec_file_prefix)
+ {
+ /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'. */
+ dir_prefix =
+ xstrndup (spec_file_prefix,
+ last_component (spec_file_prefix) - spec_file_prefix);
+ all_but_tab_ext = xstrdup (spec_file_prefix);
+ }
+ else if (yacc_flag)
+ {
+ /* If --yacc, then the output is `y.tab.c'. */
+ dir_prefix = xstrdup ("");
+ all_but_tab_ext = xstrdup ("y");
+ }
+ else
+ {
+ /* Otherwise, ALL_BUT_TAB_EXT is computed from the input
+ grammar: `foo/bar.yy' => `bar'. */
+ dir_prefix = xstrdup ("");
+ all_but_tab_ext =
+ xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0)));
+ }
+
+ if (language->add_tab)
+ all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+ else
+ all_but_ext = xstrdup (all_but_tab_ext);
+
+ /* Compute the extensions from the grammar file name. */
+ if (ext && !yacc_flag)
+ compute_exts_from_gf (ext);
}
- return ptr;
}
+
+/* Compute the output file names. Warn if we detect conflicting
+ outputs to the same file. */
+
void
-done(k)
-int k;
+compute_output_file_names (void)
{
- if (faction)
- fclose(faction);
+ compute_file_name_parts ();
- if (fattrs)
- fclose(fattrs);
+ /* If not yet done. */
+ if (!src_extension)
+ src_extension = xstrdup (".c");
+ if (!header_extension)
+ header_extension = xstrdup (".h");
- if (fguard)
- fclose(fguard);
+ parser_file_name =
+ (spec_outfile
+ ? xstrdup (spec_outfile)
+ : concat2 (all_but_ext, src_extension));
- if (finput)
- fclose(finput);
+ if (defines_flag)
+ {
+ if (! spec_defines_file)
+ spec_defines_file = concat2 (all_but_ext, header_extension);
+ }
- if (fparser)
- fclose(fparser);
+ if (graph_flag)
+ {
+ if (! spec_graph_file)
+ spec_graph_file = concat2 (all_but_tab_ext, ".dot");
+ output_file_name_check (&spec_graph_file);
+ }
- if (foutput)
- fclose(foutput);
+ if (xml_flag)
+ {
+ if (! spec_xml_file)
+ spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+ output_file_name_check (&spec_xml_file);
+ }
- /* JF write out the output file */
- if (k == 0 && ftable)
+ if (report_flag)
{
- 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 (!spec_verbose_file)
+ spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+ output_file_name_check (&spec_verbose_file);
}
-#ifdef VMS
- 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 */
+ free (all_but_tab_ext);
+ free (src_extension);
+ free (header_extension);
+}
+
+void
+output_file_name_check (char **file_name)
+{
+ bool conflict = false;
+ if (0 == strcmp (*file_name, grammar_file))
+ {
+ complain (_("refusing to overwrite the input file %s"),
+ quote (*file_name));
+ conflict = true;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < file_names_count; i++)
+ if (0 == strcmp (file_names[i], *file_name))
+ {
+ warn (_("conflicting outputs to file %s"),
+ quote (*file_name));
+ conflict = true;
+ }
+ }
+ if (conflict)
+ {
+ free (*file_name);
+ *file_name = strdup ("/dev/null");
+ }
+ else
+ {
+ file_names = xnrealloc (file_names, ++file_names_count,
+ sizeof *file_names);
+ file_names[file_names_count-1] = xstrdup (*file_name);
+ }
+}
+
+void
+output_file_names_free (void)
+{
+ free (all_but_ext);
+ free (spec_verbose_file);
+ free (spec_graph_file);
+ free (spec_xml_file);
+ free (spec_defines_file);
+ free (parser_file_name);
+ free (dir_prefix);
+ {
+ int i;
+ for (i = 0; i < file_names_count; i++)
+ free (file_names[i]);
+ }
+ free (file_names);
}
projects / bison.git / blobdiff