X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/8c7ebe49468c229227e6d21c0b48c459dbf1856c..dd31e17d7e415d3be8fc603f752f7e975297bcc2:/src/files.c diff --git a/src/files.c b/src/files.c index cbb3ac8b..550e42ed 100644 --- a/src/files.c +++ b/src/files.c @@ -1,108 +1,101 @@ -/* Open and close files for bison, - Copyright 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc. +/* 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. - 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. + 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. - 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. + 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 Bison; see the file COPYING. If not, write to the Free - Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - 02111-1307, USA. */ - + along with this program. If not, see . */ +#include #include "system.h" -#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 - -#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 +#include +#include +#include +#include +#include +#include -#include "getargs.h" +#include "complain.h" #include "files.h" -#include "xalloc.h" +#include "getargs.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 *fparser = NULL; - -struct obstack action_obstack; - -/* File name specified with -o for the output file, or 0 if no -o. */ -char *spec_outfile; - -char *infile; -char *attrsfile; - -static char *outfile; -static char *defsfile; -static char *tabfile; -static char *guardfile; -static char *actfile; -static char *tmpattrsfile; -static char *tmptabfile; -static char *tmpdefsfile; -extern char *mktemp (); /* So the compiler won't complain */ -extern char *getenv (); - -extern char *program_name; +/* 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; +/*-----------------------------------------------------------------. +| Return a newly allocated string composed of the concatenation of | +| STR1, and STR2. | +`-----------------------------------------------------------------*/ static char * -stringappend (const char *string1, int end1, const char *string2) +concat2 (char const *str1, char const *str2) { - register char *ostring; - register char *cp; - register const char *cp1; - register int i; - - cp1 = string2; - i = 0; - while (*cp1++) - i++; - - ostring = XCALLOC (char, i + end1 + 1); - - cp = ostring; - cp1 = string1; - for (i = 0; i < end1; i++) - *cp++ = *cp1++; - - cp1 = string2; - while ((*cp++ = *cp1++)) - ; - - return ostring; + size_t len = strlen (str1) + strlen (str2); + char *res = xmalloc (len + 1); + char *cp; + cp = stpcpy (res, str1); + cp = stpcpy (cp, str2); + return res; } /*-----------------------------------------------------------------. @@ -110,14 +103,15 @@ stringappend (const char *string1, int end1, const char *string2) | if fails. | `-----------------------------------------------------------------*/ -static FILE * +FILE * xfopen (const char *name, const char *mode) { FILE *ptr; - ptr = fopen (name, mode); + ptr = fopen_safer (name, mode); if (!ptr) - error (2, errno, _("cannot open file `%s'"), name); + error (EXIT_FAILURE, get_errno (), + _("%s: cannot open"), quotearg_colon (name)); return ptr; } @@ -126,329 +120,276 @@ xfopen (const char *name, const char *mode) | Try to close file PTR, and print an error message if fails. | `-------------------------------------------------------------*/ -static int +void xfclose (FILE *ptr) { - int result; - if (ptr == NULL) - return 0; + return; - result = fclose (ptr); - if (result == EOF) - error (2, errno, _("cannot close file")); + if (ferror (ptr)) + error (EXIT_FAILURE, 0, _("input/output error")); - return result; + if (fclose (ptr) != 0) + error (EXIT_FAILURE, get_errno (), _("cannot close file")); } -/* 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 -open_files (void) -{ - char *name_base; -#ifdef MSDOS - register char *cp; -#endif - char *filename; - int base_length; - int short_base_length; - -#if defined (VMS) & !defined (__VMS_POSIX) - const char *tmp_base = "sys$scratch:b_"; -#else - const 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 */ - -#if (defined(_WIN32) && !defined(__CYGWIN32__)) - tmp_base = getenv ("TEMP"); /* Windows95 defines this ... */ - if (tmp_base == 0) - tmp_base = getenv ("Temp"); /* ... while NT prefers this */ - if (tmp_base == 0) - tmp_base = ""; - strlwr (infile); -#endif /* _WIN32 && !__CYGWIN32__ */ - -#if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__)) - { - char *tmp_ptr = getenv ("TMPDIR"); - - if (tmp_ptr != 0) - tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b."); - } -#endif /* unix || __unix || __unix__ */ - tmp_len = strlen (tmp_base); +/*------------------------------------------------------------------. +| Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. | +`------------------------------------------------------------------*/ - 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) +/* Compute extensions from the grammar file extension. */ +static void +compute_exts_from_gf (const char *ext) +{ + if (STREQ (ext, ".y")) { - /* -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 = XMALLOC (char, 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. */ - - static char FIXED_NAME_BASE[] = "y.y"; - - name_base = yacc_flag ? FIXED_NAME_BASE : 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 = xfopen (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'); +} - if (!no_parser_flag) - { - 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 (char, strlen (cp) + strlen (PFILE) + 2); - strcpy (filename, cp); - cp = filename + strlen (filename); - *cp++ = '/'; - strcpy (cp, PFILE); - } -#endif /* MSDOS */ - fparser = xfopen (filename ? filename : PFILE, "r"); - } - if (verbose_flag) - { -#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 = xfopen (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. - if (no_parser_flag) - { - /* use permanent name for actions file */ - actfile = stringappend (name_base, short_base_length, ".act"); - } + *EXT points to the last period in the basename, or NULL if none. -#ifdef MSDOS - 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 - 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 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. - fattrs = xfopen (tmpattrsfile, "w+"); - ftable = xfopen (tmptabfile, "w+"); + None are allocated, they are simply pointers to parts of FILE_NAME. + Examples: - if (defines_flag) + '/tmp/foo.tab.c' -> *BASE = 'foo.tab.c', *TAB = '.tab.c', *EXT = + '.c' + + 'foo.c' -> *BASE = 'foo.c', *TAB = NULL, *EXT = '.c' + + 'tab.c' -> *BASE = 'tab.c', *TAB = NULL, *EXT = '.c' + + '.tab.c' -> *BASE = '.tab.c', *TAB = NULL, *EXT = '.c' + + 'foo.tab' -> *BASE = 'foo.tab', *TAB = NULL, *EXT = '.tab' + + 'foo_tab' -> *BASE = 'foo_tab', *TAB = NULL, *EXT = NULL + + 'foo' -> *BASE = 'foo', *TAB = NULL, *EXT = NULL. */ + +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) { - defsfile = stringappend (name_base, base_length, ".h"); - fdefines = xfopen (tmpdefsfile, "w+"); + size_t baselen = *ext - *base; + size_t dottablen = sizeof (TAB_EXT) - 1; + if (dottablen < baselen + && STRPREFIX_LIT (TAB_EXT, *ext - dottablen)) + *tab = *ext - dottablen; } +} -#if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__))) - unlink (tmpattrsfile); - unlink (tmptabfile); - unlink (tmpdefsfile); -#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */ - /* These are opened by `done' or `open_extra_files', if at all */ +static void +compute_file_name_parts (void) +{ + const char *base, *tab, *ext; + + /* 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) - tabfile = spec_outfile; + { + 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 - 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 */ - - /* Setup the action obstack. */ - obstack_init (&action_obstack); + { + 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); + } } - -/*--------------------------------------------------------------------. -| Open the output files needed only for the semantic parser. This | -| is done when %semantic_parser is seen in the declarations section. | -`--------------------------------------------------------------------*/ +/* Compute the output file names. Warn if we detect conflicting + outputs to the same file. */ void -open_extra_files (void) +compute_output_file_names (void) { - FILE *ftmp; - int c; - char *filename; -#ifdef MSDOS - char *cp; -#endif + compute_file_name_parts (); - xfclose (fparser); + /* If not yet done. */ + if (!src_extension) + src_extension = xstrdup (".c"); + if (!header_extension) + header_extension = xstrdup (".h"); - if (!no_parser_flag) + parser_file_name = + (spec_outfile + ? xstrdup (spec_outfile) + : concat2 (all_but_ext, src_extension)); + + if (defines_flag) { - 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 (char, strlen (cp) + strlen (PFILE1) + 2); - strcpy (filename, cp); - cp = filename + strlen (filename); - *cp++ = '/'; - strcpy (cp, PFILE1); - } -#endif - fparser = xfopen (filename ? filename : PFILE1, "r"); + if (! spec_defines_file) + spec_defines_file = concat2 (all_but_ext, header_extension); } - /* JF change from inline attrs file to separate one */ - ftmp = xfopen (attrsfile, "w"); - rewind (fattrs); - while ((c = getc (fattrs)) != EOF) /* Thank god for buffering */ - putc (c, ftmp); - xfclose (fattrs); - fattrs = ftmp; + if (graph_flag) + { + if (! spec_graph_file) + spec_graph_file = concat2 (all_but_tab_ext, ".dot"); + output_file_name_check (&spec_graph_file); + } + + if (xml_flag) + { + if (! spec_xml_file) + spec_xml_file = concat2 (all_but_tab_ext, ".xml"); + output_file_name_check (&spec_xml_file); + } - fguard = xfopen (guardfile, "w"); + if (report_flag) + { + if (!spec_verbose_file) + spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT); + output_file_name_check (&spec_verbose_file); + } + free (all_but_tab_ext); + free (src_extension); + free (header_extension); } void -done (void) +output_file_name_check (char **file_name) { - xfclose (fattrs); - xfclose (fguard); - xfclose (finput); - xfclose (fparser); - xfclose (foutput); - - /* JF write out the output file */ - if (!complain_message_count && ftable) + bool conflict = false; + if (STREQ (*file_name, grammar_file)) { - FILE *ftmp; - register int c; - - ftmp = xfopen (tabfile, "w"); - rewind (ftable); - while ((c = getc (ftable)) != EOF) - putc (c, ftmp); - xfclose (ftmp); - xfclose (ftable); - - if (defines_flag) - { - ftmp = xfopen (defsfile, "w"); - fflush (fdefines); - rewind (fdefines); - while ((c = getc (fdefines)) != EOF) - putc (c, ftmp); - xfclose (ftmp); - xfclose (fdefines); - } + complain (_("refusing to overwrite the input file %s"), + quote (*file_name)); + conflict = true; } - - if (no_parser_flag) + else + { + int i; + for (i = 0; i < file_names_count; i++) + if (STREQ (file_names[i], *file_name)) + { + warn (_("conflicting outputs to file %s"), + quote (*file_name)); + conflict = true; + } + } + if (conflict) { - FILE *faction = xfopen (actfile, "w"); - size_t size = obstack_object_size (&action_obstack); - fwrite (obstack_finish (&action_obstack), 1, size, faction); - fclose (faction); + free (*file_name); + *file_name = strdup ("/dev/null"); } -#if defined (VMS) & !defined (__VMS_POSIX) - if (fattrs) - delete (tmpattrsfile); - if (ftable) - delete (tmptabfile); -/* Don't call exit again, we're in atexit (). - if (!complain_message_count) - sys$exit(SS$_NORMAL); - sys$exit(SS$_ABORT); */ -#else -#if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__))) - if (tmpattrsfile) - unlink (tmpattrsfile); - if (tmptabfile) - unlink (tmptabfile); - if (tmpdefsfile) - unlink (tmpdefsfile); -#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */ -/* Don't call exit again, we're in atexit (). - exit (complain_message_count ? 1 : 0); */ -#endif /* not VMS, or __VMS_POSIX */ + 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); }