X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0d533154e4618606f7a0907b68fedafb35982924..2cbd078f5153288a39cbf046231a3870df8170cb:/src/files.c diff --git a/src/files.c b/src/files.c index 0149ae60..5a0b2ea4 100644 --- a/src/files.c +++ b/src/files.c @@ -1,121 +1,89 @@ -/* Open and close files for bison, - Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc. +/* Open and close files for Bison. -This file is part of Bison, the GNU Compiler Compiler. + Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005 + Free Software Foundation, Inc. -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 file is part of Bison, the GNU Compiler Compiler. -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 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. -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. */ + 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., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ #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 - -#ifdef HAVE_UNISTD_H -#include -#endif +#include +#include +#include +#include +#include "complain.h" #include "files.h" -#include "alloc.h" +#include "getargs.h" #include "gram.h" -#include "complain.h" +#include "stdio-safer.h" + +/* From basename.c. Almost a lie, as it returns a char *. */ +const char *base_name (char const *name); 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 *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 int noparserflag; - -extern char *mktemp(); /* So the compiler won't complain */ -extern char *getenv(); - -extern char *stringappend PARAMS((const char *, int, const char *)); -extern void openfiles PARAMS((void)); -extern void open_extra_files PARAMS((void)); - -int fixed_outfiles = 0; - -extern char *program_name; -extern int verboseflag; -extern int definesflag; - -char * -stringappend (const char *string1, int end1, const char *string2) -{ - register char *ostring; - register char *cp; - register const char *cp1; - register int i; +struct obstack pre_prologue_obstack; +struct obstack post_prologue_obstack; + +/* 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. */ - cp1 = string2; - i = 0; - while (*cp1++) i++; +char *spec_outfile = NULL; /* for -o. */ +char *spec_file_prefix = NULL; /* for -b. */ +const char *spec_name_prefix = NULL; /* for -p. */ +char *spec_verbose_file = NULL; /* for --verbose. */ +char *spec_graph_file = NULL; /* for -g. */ +char *spec_defines_file = NULL; /* for --defines. */ +char *parser_file_name = NULL; - ostring = NEW2(i+end1+1, char); +uniqstr grammar_file = NULL; +uniqstr current_file = NULL; - cp = ostring; - cp1 = string1; - for (i = 0; i < end1; i++) - *cp++ = *cp1++; +static char *full_base_name = NULL; - cp1 = string2; - while ((*cp++ = *cp1++)) - ; +/* Prefix used to generate output file names. */ +char *short_base_name = NULL; - return ostring; +/* C source file extension (the parser source). */ +const char *src_extension = NULL; +/* Header file extension (if option ``-d'' is specified). */ +const char *header_extension = NULL; + +/*-----------------------------------------------------------------. +| Return a newly allocated string composed of the concatenation of | +| STR1, and STR2. | +`-----------------------------------------------------------------*/ + +static char * +concat2 (char const *str1, char const *str2) +{ + size_t len = strlen (str1) + strlen (str2); + char *res = xmalloc (len + 1); + char *cp; + cp = stpcpy (res, str1); + cp = stpcpy (cp, str2); + return res; } /*-----------------------------------------------------------------. @@ -123,14 +91,14 @@ stringappend (const char *string1, int end1, const char *string2) | if fails. | `-----------------------------------------------------------------*/ -static FILE * -tryopen (const char *name, const char *mode) +FILE * +xfopen (const char *name, const char *mode) { - FILE *ptr; + 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 (), _("cannot open file `%s'"), name); return ptr; } @@ -139,329 +107,233 @@ tryopen (const char *name, const char *mode) | Try to close file PTR, and print an error message if fails. | `-------------------------------------------------------------*/ -static int -tryclose (FILE *ptr) +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, _("I/O 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 -openfiles (void) + +/*---------------------------------------------------------------------. +| Compute FULL_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 *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); + char *temp; + char *out = xmalloc (strlen (in) + 1); + + for (temp = out; *in; in++, out++) + if (*in == from) + *out = to; + else + *out = *in; + *out = 0; + return (temp); +} - 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. */ - - static char FIXED_NAME_BASE[] = "y.y"; - - name_base = fixed_outfiles ? 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; - } +/* Compute extensions from the grammar file extension. */ +static void +compute_exts_from_gf (const char *ext) +{ + 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'); +} - 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 = tr (ext, 'c', 'h'); + header_extension = tr (header_extension, 'C', 'H'); +} - 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"); - } - 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 FILENAME in four parts: *BASE, *TAB, and *EXT, the fourth + part, (the directory) is ranging from FILENAME to the char before + *BASE, so we don't need an additional parameter. + + *EXT points to the last period in the basename, or NULL if none. + + 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. - if (noparserflag) + None are allocated, they are simply pointers to parts of FILENAME. + Examples: + + '/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 +filename_split (const char *filename, + const char **base, const char **tab, const char **ext) +{ + *base = base_name (filename); + + /* Look for the extension, i.e., look for the last dot. */ + *ext = strrchr (*base, '.'); + *tab = NULL; + + /* If there is an extension, check if there is a `.tab' part right + before. */ + if (*ext) { - /* use permanent name for actions file */ - actfile = stringappend(name_base, short_base_length, ".act"); - faction = tryopen(actfile, "w"); + 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; } +} + + +/* FIXME: Should use xstrndup. */ + +static void +compute_base_names (void) +{ + const char *base, *tab, *ext; + + /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c), + FULL_BASE_NAME and SHORT_BASE_NAME are `foo'. + + If --output=foo.tab.c was specified, FULL_BASE_NAME is `foo.tab' + and SHORT_BASE_NAME is `foo'. -#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) + The precise -o name will be used for FTABLE. For other output + files, remove the ".c" or ".tab.c" suffix. */ + if (spec_outfile) { - defsfile = stringappend(name_base, base_length, ".h"); - fdefines = tryopen(tmpdefsfile, "w+"); + filename_split (spec_outfile, &base, &tab, &ext); + + /* The full base name goes up the EXT, excluding it. */ + full_base_name = + xstrndup (spec_outfile, + (strlen (spec_outfile) - (ext ? strlen (ext) : 0))); + + /* The short base name goes up to TAB, excluding it. */ + short_base_name = + xstrndup (spec_outfile, + (strlen (spec_outfile) + - (tab ? strlen (tab) : (ext ? strlen (ext) : 0)))); + + if (ext) + compute_exts_from_src (ext); } -#if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__))) - if (! noparserflag) - unlink(actfile); - unlink(tmpattrsfile); - unlink(tmptabfile); - unlink(tmpdefsfile); -#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */ + /* If --file-prefix=foo was specified, FULL_BASE_NAME = `foo.tab' + and SHORT_BASE_NAME = `foo'. - /* These are opened by `done' or `open_extra_files', if at all */ - if (spec_outfile) - tabfile = spec_outfile; + Construct names from it. */ 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 */ + { + if (spec_file_prefix) + { + /* If --file-prefix=foo was specified, SHORT_BASE_NAME = + `foo'. */ + short_base_name = xstrdup (spec_file_prefix); + } + else if (yacc_flag) + { + /* If --yacc, then the output is `y.tab.c'. */ + short_base_name = xstrdup ("y"); + } + else + { + /* Otherwise, the short base name is computed from the input + grammar: `foo/bar.yy' => `bar'. */ + filename_split (grammar_file, &base, &tab, &ext); + short_base_name = + xstrndup (base, + (strlen (base) - (ext ? strlen (ext) : 0))); + } + + full_base_name = xmalloc (strlen (short_base_name) + + strlen (TAB_EXT) + 1); + stpcpy (stpcpy (full_base_name, short_base_name), TAB_EXT); + + /* Compute the extensions from the grammar file name. */ + filename_split (grammar_file, &base, &tab, &ext); + 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 + char const *name[4]; + int i; + int j; + int names = 0; - tryclose(fparser); + compute_base_names (); - if (! noparserflag) - { - 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"); - } + /* If not yet done. */ + if (!src_extension) + src_extension = ".c"; + if (!header_extension) + header_extension = ".h"; - /* 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); - tryclose(fattrs); - fattrs=ftmp; + name[names++] = parser_file_name = + spec_outfile ? spec_outfile : concat2 (full_base_name, src_extension); - fguard = tryopen(guardfile, "w"); + if (defines_flag) + { + if (! spec_defines_file) + spec_defines_file = concat2 (full_base_name, header_extension); + name[names++] = spec_defines_file; + } -} + if (graph_flag) + { + if (! spec_graph_file) + spec_graph_file = concat2 (short_base_name, ".vcg"); + name[names++] = spec_graph_file; + } -void -done (void) -{ - tryclose(faction); - tryclose(fattrs); - tryclose(fguard); - tryclose(finput); - tryclose(fparser); - tryclose(foutput); - - /* JF write out the output file */ - if (!complain_message_count && ftable) + if (report_flag) { - FILE *ftmp; - register int c; - - ftmp=tryopen(tabfile, "w"); - rewind(ftable); - while((c=getc(ftable)) != EOF) - putc(c,ftmp); - tryclose(ftmp); - tryclose(ftable); - - if (definesflag) - { - ftmp = tryopen(defsfile, "w"); - fflush(fdefines); - rewind(fdefines); - while((c=getc(fdefines)) != EOF) - putc(c,ftmp); - tryclose(ftmp); - tryclose(fdefines); - } + spec_verbose_file = concat2 (short_base_name, OUTPUT_EXT); + name[names++] = spec_verbose_file; } -#if defined (VMS) & !defined (__VMS_POSIX) - if (faction && ! noparserflag) - delete(actfile); - 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 (actfile && ! noparserflag) unlink(actfile); - 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 */ + for (j = 0; j < names; j++) + for (i = 0; i < j; i++) + if (strcmp (name[i], name[j]) == 0) + warn (_("conflicting outputs to file %s"), quote (name[i])); }