X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7333d403168b95318108cd572d228881c82ff341..5449dd0f25f584ec596f165cb6004e1b4d092f10:/src/files.c diff --git a/src/files.c b/src/files.c index 4946477d..d8641521 100644 --- a/src/files.c +++ b/src/files.c @@ -1,5 +1,5 @@ /* Open and close files for bison, - Copyright 1984, 1986, 1989, 1992, 2000 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. @@ -22,8 +22,8 @@ #include "system.h" #include "getargs.h" #include "files.h" -#include "xalloc.h" #include "gram.h" +#include "error.h" #include "complain.h" FILE *finput = NULL; @@ -36,8 +36,11 @@ struct obstack guard_obstack; struct obstack output_obstack; char *spec_outfile = NULL; /* for -o. */ -char *spec_file_prefix = NULL; /* for -b. */ -char *spec_name_prefix = NULL; /* for -p. */ +char *spec_file_prefix = NULL; /* for -b. */ +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 *infile = NULL; char *attrsfile = NULL; @@ -45,12 +48,12 @@ char *attrsfile = NULL; static char *base_name = NULL; static char *short_base_name = NULL; -/* C source file extension (the parser source). */ +/* C source file extension (the parser source). */ const char *src_extension = NULL; -/* Header file extension (if option ``-d'' is specified). */ +/* Header file extension (if option ``-d'' is specified). */ const char *header_extension = NULL; - + /*--------------------------. | Is SUFFIX ending STRING? | `--------------------------*/ @@ -83,6 +86,49 @@ stringappend (const char *string1, const char *string2) return res; } + +/*-----------------------------------------------------------------. +| 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). | +`-----------------------------------------------------------------*/ + +static char * +compute_header_macro (void) +{ + const char *prefix = "BISON_"; + char *macro_name, *cp; + + 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); + } + + for (cp = macro_name; *cp; ++cp) + if (islower (*cp)) + *cp = toupper (*cp); + else if (!isalnum (*cp)) + *cp = '_'; + + return macro_name; +} + + /*-----------------------------------------------------------------. | Try to open file NAME with mode MODE, and print an error message | | if fails. | @@ -132,6 +178,25 @@ obstack_save (struct obstack *obs, const char *filename) xfclose (out); } +/*---------------------------------------------------------------------. +| Output double inclusion protection macros and saves defines_obstack | +`---------------------------------------------------------------------*/ + +static void +defines_obstack_save (const char *filename) +{ + FILE *out = xfopen (filename, "w"); + size_t size = obstack_object_size (&defines_obstack); + char *macro_name = compute_header_macro (); + + fprintf (out, "#ifndef %s\n", macro_name); + fprintf (out, "# define %s\n\n", macro_name); + fwrite (obstack_finish (&defines_obstack), 1, size, out); + fprintf (out, "\n#endif /* not %s */\n", macro_name); + + free (macro_name); + xfclose (out); +} /*------------------------------------------------------------------. | Return the path to the skeleton which locaction might be given in | @@ -143,32 +208,57 @@ skeleton_find (const char *envvar, const char *skeleton_name) { const char *res = getenv (envvar); -#ifdef MSDOS - const char *cp; - - /* File doesn't exist in current directory; try in INIT directory. */ - if (!res && (cp = getenv ("INIT"))) +#if defined (MSDOS) || defined (_WIN32) + if (!res) { - res = XMALLOC (char, strlen (cp) + strlen (skeleton_name) + 2); - sprintf (res, "%s%c%s", cp, '/', skeleton_name); + /* 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 /* !MSDOS */ - +#endif /* defined (MSDOS) || defined (_WIN32) */ if (!res) res = skeleton_name; return res; } - + /*----------------------------------------------------------------. | 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. */ + and returns a new allocated string. */ static char * -tr(const char *in, char from, char to) +tr (const char *in, char from, char to) { char *temp; char *out; @@ -184,12 +274,12 @@ tr(const char *in, char from, char to) return (temp); } -/* Gets the extension index in FILENAME. Returns 0 if fails to - find an extension. */ +/* Gets the extension index in FILENAME. Returns 0 if fails to + find an extension. */ static int -get_extension_index(const char *filename) +get_extension_index (const char *filename) { - int len; + int len; len = strlen (filename); @@ -207,31 +297,24 @@ get_extension_index(const char *filename) /* Computes extensions from the grammar file extension. */ static void -compute_exts_from_gf(const char *ext) +compute_exts_from_gf (const char *ext) { - if (!src_extension) - { - src_extension = tr(ext, 'y', 'c'); - src_extension = tr(src_extension, 'Y', 'C'); - } - if (!header_extension) - { - header_extension = tr(ext, 'y', 'h'); - header_extension = tr(header_extension, 'Y', 'H'); - } + 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) +compute_exts_from_src (const char *ext) { - if (!src_extension) - src_extension = xstrdup(ext); - if (!header_extension) - { - header_extension = tr(ext, 'c', 'h'); - header_extension = tr(header_extension, 'C', 'H'); - } + /* 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. */ @@ -260,14 +343,15 @@ compute_base_names (void) 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 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; + 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); + compute_exts_from_src (spec_outfile + ext_index); } base_name = strndup (spec_outfile, base_length); @@ -294,6 +378,15 @@ compute_base_names (void) 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); + return; } @@ -310,14 +403,14 @@ compute_base_names (void) 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 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; + 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); + compute_exts_from_gf (name_base + ext_index); } short_base_length = base_length; @@ -331,6 +424,38 @@ compute_base_names (void) } } +/*-------------------------------------------------------. +| Close the open files, compute the output files names. | +`-------------------------------------------------------*/ + +void +compute_output_file_names (void) +{ + compute_base_names (); + + /* If not yet done. */ + if (!src_extension) + src_extension = ".c"; + if (!header_extension) + header_extension = ".h"; + + /* It the defines filename if not given, we create it. */ + if (!spec_defines_file) + spec_defines_file = stringappend (base_name, header_extension); + + /* It the graph filename if not given, we create it. */ + if (!spec_graph_file) + spec_graph_file = stringappend (short_base_name, ".vcg"); + + spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT); + + attrsfile = stringappend (short_base_name, EXT_STYPE_H); +#ifndef MSDOS + attrsfile = stringappend (attrsfile, header_extension); +#endif /* MSDOS */ + +} + /*-----------------------------------------------------------------. | Open the input file. Look for the skeletons. Find the names of | | the output files. Prepare the obstacks. | @@ -352,41 +477,43 @@ open_files (void) -/*-----------------------------------------------------. -| Close the open files, produce all the output files. | -`-----------------------------------------------------*/ +/*-----------------------. +| Close the open file.. | +`-----------------------*/ void -output_files (void) +close_files (void) { xfclose (finput); +} - compute_base_names (); - - /* Set default extensions */ - if (!src_extension) - src_extension = ".c"; - if (!header_extension) - header_extension = ".h"; - - attrsfile = stringappend (short_base_name, EXT_STYPE_H); -#ifndef MSDOS - stringappend (attrsfile, header_extension); -#endif /* MSDOS */ +/*---------------------------. +| Produce the output files. | +`---------------------------*/ +void +output_files (void) +{ /* Output the main file. */ if (spec_outfile) obstack_save (&table_obstack, spec_outfile); else - obstack_save (&table_obstack, stringappend (base_name, src_extension)); + obstack_save (&table_obstack, stringappend (base_name, src_extension)); + obstack_free (&table_obstack, NULL); /* Output the header file if wanted. */ if (defines_flag) - obstack_save (&defines_obstack, stringappend (base_name, header_extension)); + defines_obstack_save (spec_defines_file); + obstack_free (&defines_obstack, NULL); + +#if 0 + /* Seems to be invalid now --akim. */ /* If we output only the table, dump the actions in ACTFILE. */ if (no_parser_flag) obstack_save (&action_obstack, stringappend (short_base_name, ".act")); + obstack_free (&action_obstack, NULL); +#endif /* If we produced a semantic parser ATTRS_OBSTACK must be dumped into its own file, ATTTRSFILE. */ @@ -395,15 +522,12 @@ output_files (void) char *temp_name; obstack_save (&attrs_obstack, attrsfile); + obstack_free (&attrs_obstack, NULL); temp_name = stringappend (short_base_name, EXT_GUARD_C); #ifndef MSDOS temp_name = stringappend (temp_name, src_extension); #endif /* MSDOS */ obstack_save (&guard_obstack, temp_name); + obstack_free (&guard_obstack, NULL); } - - 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)); }