X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/54bd0db43634c649d13e175384e6e816c44a34d4..e9f87b5b7df2e328d2e4196d276c0d96594c906b:/src/files.c diff --git a/src/files.c b/src/files.c index 00342429..2e817b1e 100644 --- a/src/files.c +++ b/src/files.c @@ -1,394 +1,447 @@ /* Open and close files for bison, - Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc. + Copyright 1984, 1986, 1989, 1992, 2000, 2001 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. */ -#ifdef VMS -#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 "gram.h" +#include "error.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; - -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; + +struct obstack action_obstack; +struct obstack attrs_obstack; +struct obstack output_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. */ + +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; + +char *infile = NULL; +char *attrsfile = NULL; + +static char *base_name = NULL; +char *short_base_name = NULL; + +/* 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; + +/* Should we insert '.tab' in yacc-compatible parsers? */ +int tab_extension = 0; +/*--------------------------. +| Is SUFFIX ending STRING? | +`--------------------------*/ + +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. | +`-----------------------------------------------------------------*/ + char* -stringappend(string1, end1, string2) -char *string1; -int end1; -char *string2; +stringappend (const char *string1, const char *string2) { - register char *ostring; - register char *cp, *cp1; - register int i; + 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 = string2; i = 0; - while (*cp++) i++; - ostring = NEW2(i+end1+1, char); +/*-----------------------------------------------------------------. +| Computes the macro name used to avoid double inclusion in the | +| header of the parser and store it in header_macro_name. Be sure | +| to produce valid CPP names (don't start with digit, remain | +| alphanumerical + underscore). | +`-----------------------------------------------------------------*/ - cp = ostring; - cp1 = string1; - for (i = 0; i < end1; i++) - *cp++ = *cp1++; +char * +compute_header_macro (void) +{ + const char *prefix = "BISON_"; + char *macro_name, *cp; - cp1 = string2; - while (*cp++ = *cp1++) ; + if (spec_defines_file) + { + macro_name = XMALLOC (char, + strlen (prefix) + + strlen (spec_defines_file) + 1); + cp = stpcpy (macro_name, prefix); + cp = stpcpy (cp, spec_defines_file); + } + else + { + macro_name = XMALLOC (char, + strlen (prefix) + + strlen (base_name) + + strlen (header_extension) + 1); + cp = stpcpy (macro_name, prefix); + cp = stpcpy (cp, base_name); + cp = stpcpy (cp, header_extension); + } - return ostring; + for (cp = macro_name; *cp; ++cp) + if (islower (*cp)) + *cp = toupper (*cp); + else if (!isalnum (*cp)) + *cp = '_'; + + return macro_name; } -/* 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() +/*-----------------------------------------------------------------. +| Try to open file NAME with mode MODE, and print an error message | +| if fails. | +`-----------------------------------------------------------------*/ + +FILE * +xfopen (const char *name, const char *mode) { - 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; + FILE *ptr; -#ifdef MSDOS - tmp_base = getenv ("TMP"); - if (tmp_base == 0) - tmp_base = ""; - strlwr (infile); -#endif /* MSDOS */ + ptr = fopen (name, mode); + if (!ptr) + error (2, errno, _("cannot open file `%s'"), name); - tmp_len = strlen (tmp_base); + return ptr; +} - 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 *) 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 */ - } - else - { - /* -o was not specified; compute output file name from input - or use y.tab.c, etc., if -y was specified. */ +/*-------------------------------------------------------------. +| Try to close file PTR, and print an error message if fails. | +`-------------------------------------------------------------*/ - name_base = fixed_outfiles ? "y.y" : infile; +int +xfclose (FILE *ptr) +{ + int result; - /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any. */ + if (ptr == NULL) + return 0; - base_length = strlen (name_base); - if (!strcmp (name_base + base_length - 2, ".y")) - base_length -= 2; - short_base_length = base_length; + result = fclose (ptr); + if (result == EOF) + error (2, errno, _("cannot close file")); -#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 result; +} - finput = tryopen(infile, "r"); - 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"); +/*------------------------------------------------------------------. +| Return the path to the skeleton which locaction might be given in | +| ENVVAR, otherwise return SKELETON_NAME. | +`------------------------------------------------------------------*/ - 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"); - } +const char * +skeleton_find (const char *envvar, const char *skeleton_name) +{ + const char *res = getenv (envvar); -#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) +#if defined (MSDOS) || defined (_WIN32) + if (!res) { - defsfile = stringappend(name_base, base_length, ".h"); - fdefines = tryopen(tmpdefsfile, "w+"); + /* Skeleton file name without path */ + const char *skel_name = strrchr (skeleton_name, '/'); + if (!skel_name) + skel_name = strrchr (skeleton_name, '\\'); + if (!skel_name) + skel_name = skeleton_name; + else + ++skel_name; + + /* File doesn't exist in current directory; try in INIT directory. */ + const char *cp = getenv ("INIT"); + if (cp) + { + res = XMALLOC (char, strlen (cp) + strlen (skel_name) + 2); + sprintf (res, "%s%c%s", cp, '\\', skel_name); + } + else if (access (skel_name, 4) == 0) /* Look in current dir. */ + res = skel_name; + else + { + /* Look in program locations dir. */ + extern char *program_name; + cp = strrchr(program_name, '\\'); + if (!cp) + return skeleton_name; + else + ++cp; + res = XMALLOC (char, cp - program_name + strlen (skel_name) + 1); + strncpy (res, program_name, cp - program_name); + strcpy (res + (cp - program_name), skel_name); + } } +#endif /* defined (MSDOS) || defined (_WIN32) */ + if (!res) + res = skeleton_name; -#ifndef MSDOS - unlink(actfile); - unlink(tmpattrsfile); - unlink(tmptabfile); - unlink(tmpdefsfile); -#endif + return res; +} + - /* 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"); +/*----------------------------------------------------------------. +| Compute BASE_NAME, SHORT_BASE_NAME and output files extensions. | +`----------------------------------------------------------------*/ -#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 */ +/* 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); -/* open the output files needed only for the semantic parser. -This is done when %semantic_parser is seen in the declarations section. */ + if (filename[len-- - 1] == '.') + return (0); -void -open_extra_files() + while ((len > 0) && (filename[len - 1] != '.')) + if (filename[len - 1] == '/') + return (0); + else + len--; + + 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'); +} + +/* Computes 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'); +} + +/* FIXME: Should use xstrndup. */ + +static void +compute_base_names (void) +{ + size_t base_length; + size_t short_base_length; + size_t ext_index; - fclose(fparser); + /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c), + BASE_NAME and SHORT_BASE_NAME are `foo'. - filename = (char *) getenv ("BISON_HAIRY"); + 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) + { #ifdef MSDOS - /* File doesn't exist in current directory; try in INIT directory. */ - cp = getenv("INIT"); - if (filename == 0 && cp != 0) + 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); + + /* FIXME: This is a quick and dirty way for me to find out if we + should .tab or not, using the computations above. */ + if (strcmp (base_name, short_base_name)) + tab_extension = 1; + + return; + } + + /* If --file-prefix=foo was specified, BASE_NAME and SHORT_BASE_NAME + are `foo'. + + Construct names from it. */ + if (spec_file_prefix) { - filename = malloc(strlen(cp) + strlen(PFILE1) + 2); - strcpy(filename, cp); - cp = filename + strlen(filename); - *cp++ = '/'; - strcpy(cp, PFILE1); +#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); + + /* Computes the extensions from the garmmar file name. */ + ext_index = get_extension_index (infile); + /* 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 (infile + ext_index + 1, "yY")) ? ext_index : 0; + if (ext_index) + compute_exts_from_gf (infile + ext_index); + + /* It seems that when only a prefix is given, '.tab' should always be + used. */ + tab_extension = 1; + + return; } -#endif - fparser= tryopen(filename ? filename : PFILE1, "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 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'. - fguard = tryopen(guardfile, "w"); + 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. */ - /* 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; + base_length = strlen (name_base); - ptr = fopen(name, mode); - if (ptr == NULL) - { - fprintf(stderr, "%s: ", program_name); - perror(name); - done(2); - } - return ptr; + 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); + + /* By default, Bison should insert '.tab' were needed. */ + tab_extension = 1; + + return; + } } +/*-------------------------------------------------------. +| Close the open files, compute the output files names. | +`-------------------------------------------------------*/ + void -done(k) -int k; +compute_output_file_names (void) { - if (faction) - fclose(faction); - - if (fattrs) - fclose(fattrs); + compute_base_names (); - if (fguard) - fclose(fguard); + parser_file_name = + spec_outfile ? spec_outfile : stringappend (base_name, src_extension); - if (finput) - fclose(finput); + /* If not yet done. */ + if (!src_extension) + src_extension = ".c"; + if (!header_extension) + header_extension = ".h"; - if (fparser) - fclose(fparser); + /* It the defines filename if not given, we create it. */ + if (!spec_defines_file) + spec_defines_file = stringappend (base_name, header_extension); - if (foutput) - fclose(foutput); + /* It the graph filename if not given, we create it. */ + if (!spec_graph_file) + spec_graph_file = stringappend (short_base_name, ".vcg"); - /* 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); - } - } + spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT); -#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); + attrsfile = stringappend (short_base_name, EXT_STYPE_H); +#ifndef MSDOS + attrsfile = stringappend (attrsfile, header_extension); #endif /* MSDOS */ - exit(k); -#endif /* not VMS */ }