X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/956dba3a7c0e15bd356d025c0393b807ec72bd31..4134cae3c5ff2fc3346ebc5b10d5c25c72c72cfe:/src/files.c diff --git a/src/files.c b/src/files.c index 2e65c5ae..6bf301f9 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. @@ -27,25 +27,31 @@ #include "complain.h" FILE *finput = NULL; -FILE *foutput = NULL; struct obstack action_obstack; struct obstack attrs_obstack; struct obstack table_obstack; struct obstack defines_obstack; struct obstack guard_obstack; +struct obstack output_obstack; +struct obstack graph_obstack; -char *spec_outfile; /* for -o. */ -char *spec_file_prefix; /* for -b. */ -char *spec_name_prefix; /* for -p. */ +char *spec_outfile = NULL; /* for -o. */ +char *spec_file_prefix = NULL; /* for -b. */ +char *spec_name_prefix = NULL; /* for -p. */ -char *infile; -char *attrsfile; +char *infile = NULL; +char *attrsfile = NULL; -static char *base_name; -static char *short_base_name; +static char *base_name = NULL; +static 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; + /*--------------------------. | Is SUFFIX ending STRING? | `--------------------------*/ @@ -78,6 +84,37 @@ 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. | +`---------------------------------------------------------------*/ + +static char * +compute_header_macro (void) +{ + int ite; + char *macro_name; + + macro_name = XMALLOC (char, + strlen (base_name) + + strlen (header_extension) + 1); + + stpcpy (macro_name, base_name); + strcat (macro_name, header_extension); + + for (ite = 0; macro_name[ite]; ite++) + if (macro_name[ite] == '.') + macro_name[ite] = '_'; + else + { + if (islower (macro_name[ite])) + macro_name[ite] -= ('a' - 'A'); + } + return macro_name; +} + + /*-----------------------------------------------------------------. | Try to open file NAME with mode MODE, and print an error message | | if fails. | @@ -127,14 +164,33 @@ 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 | -| ENVVAR, otherwise return SKELETON. | +| ENVVAR, otherwise return SKELETON_NAME. | `------------------------------------------------------------------*/ const char * -skeleton_find (const char *envvar, const char *skeleton) +skeleton_find (const char *envvar, const char *skeleton_name) { const char *res = getenv (envvar); @@ -144,21 +200,93 @@ skeleton_find (const char *envvar, const char *skeleton) /* File doesn't exist in current directory; try in INIT directory. */ if (!res && (cp = getenv ("INIT"))) { - res = XMALLOC (char, strlen (cp) + strlen (skeleton) + 2); - sprintf (res, "%s%c%s", cp, '/', skeleton); + res = XMALLOC (char, strlen (cp) + strlen (skeleton_name) + 2); + sprintf (res, "%s%c%s", cp, '/', skeleton_name); } #endif /* !MSDOS */ if (!res) - res = skeleton; + res = skeleton_name; return res; } - -/*----------------------------------------. -| Compute BASE_NAME and SHORT_BASE_NAME. | -`----------------------------------------*/ + +/*----------------------------------------------------------------. +| 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. */ +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); + + if (filename[len-- - 1] == '.') + return (0); + + 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) +{ + /* Checks if SRC_EXTENSION is NULL. In the other case, %source_extension + was specified in the grammar file. */ + if (src_extension == NULL) + { + src_extension = tr (ext, 'y', 'c'); + src_extension = tr (src_extension, 'Y', 'C'); + } + /* Checks if HEADER_EXTENSION is NULL. In the other case, + %header_extension was specified in the grammar file. */ + if (header_extension == NULL) + { + 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. */ @@ -167,6 +295,7 @@ compute_base_names (void) { size_t base_length; size_t short_base_length; + size_t ext_index; /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c), BASE_NAME and SHORT_BASE_NAME are `foo'. @@ -183,8 +312,19 @@ compute_base_names (void) #endif /* MSDOS */ /* BASE_LENGTH includes ".tab" but not ".c". */ base_length = strlen (spec_outfile); - if (strsuffix (spec_outfile, ".c")) - base_length -= 2; + + 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; @@ -205,11 +345,19 @@ compute_base_names (void) 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); + return; } @@ -224,8 +372,18 @@ compute_base_names (void) /* BASE_LENGTH gets length of BASE_NAME, sans ".y" suffix if any. */ base_length = strlen (name_base); - if (strsuffix (name_base, ".y")) - base_length -= 2; + + 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); @@ -245,23 +403,16 @@ compute_base_names (void) void open_files (void) { - compute_base_names (); - finput = xfopen (infile, "r"); - if (verbose_flag) - /* We used to use just .out if spec_name_prefix (-p) was used, but - that conflicts with Posix. */ - foutput = xfopen (stringappend (short_base_name, EXT_OUTPUT), "w"); - - attrsfile = stringappend (short_base_name, EXT_STYPE_H); - /* Initialize the obstacks. */ obstack_init (&action_obstack); obstack_init (&attrs_obstack); obstack_init (&table_obstack); obstack_init (&defines_obstack); obstack_init (&guard_obstack); + obstack_init (&output_obstack); + obstack_init (&graph_obstack); } @@ -274,17 +425,29 @@ void output_files (void) { xfclose (finput); - xfclose (foutput); + + 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 */ /* Output the main file. */ if (spec_outfile) obstack_save (&table_obstack, spec_outfile); else - obstack_save (&table_obstack, stringappend (base_name, ".c")); + obstack_save (&table_obstack, stringappend (base_name, src_extension)); /* Output the header file if wanted. */ if (defines_flag) - obstack_save (&defines_obstack, stringappend (base_name, ".h")); + defines_obstack_save (stringappend (base_name, header_extension)); /* If we output only the table, dump the actions in ACTFILE. */ if (no_parser_flag) @@ -294,8 +457,22 @@ output_files (void) into its own file, ATTTRSFILE. */ if (semantic_parser) { + char *temp_name; + obstack_save (&attrs_obstack, attrsfile); - obstack_save (&guard_obstack, - stringappend (short_base_name, EXT_GUARD_C)); + 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); } + + 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)); + + if (graph_flag) + obstack_save (&graph_obstack, stringappend (short_base_name, ".vcg")); }