X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ceed8467b7db3615d3c9bfa9f3e5525d54c6a161..bfb0787482aa29080973a79ca0e388f091a4b7c4:/src/files.c

diff --git a/src/files.c b/src/files.c
index b7f168a3..5282ac0d 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1,5 +1,5 @@
 /* Open and close files for bison,
-   Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
+   Copyright 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -22,40 +22,39 @@
 #include "system.h"
 
 #if defined (VMS) & !defined (__VMS_POSIX)
-# include <ssdef.h>
-# define unlink delete
-# ifndef XPFILE
-#  define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
+# ifndef BISON_SIMPLE
+#  define BISON_SIMPLE "GNU_BISON:[000000]BISON.SIMPLE"
 # endif
-# ifndef XPFILE1
-#  define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
+# ifndef BISON_HAIRY
+#  define BISON_HARIRY "GNU_BISON:[000000]BISON.HAIRY"
 # endif
 #endif
 
 #if defined (_MSC_VER)
-# ifndef XPFILE
-#  define XPFILE "c:/usr/local/lib/bison.simple"
+# ifndef BISON_SIMPLE
+#  define BISON_SIMPLE "c:/usr/local/lib/bison.simple"
 # endif
-# ifndef XPFILE1
-#  define XPFILE1 "c:/usr/local/lib/bison.hairy"
+# ifndef BISON_HAIRY
+#  define BISON_HAIRY "c:/usr/local/lib/bison.hairy"
 # endif
 #endif
 
 #include "getargs.h"
 #include "files.h"
-#include "alloc.h"
+#include "xalloc.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 *faction = NULL;
 FILE *fparser = NULL;
 
+struct obstack action_obstack;
+struct obstack attrs_obstack;
+struct obstack table_obstack;
+struct obstack defines_obstack;
+
 /* File name specified with -o for the output file, or 0 if no -o.  */
 char *spec_outfile;
 
@@ -67,23 +66,13 @@ 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 *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 *getenv ();
 
 extern char *program_name;
 
 
-char *
+static char *
 stringappend (const char *string1, int end1, const char *string2)
 {
   register char *ostring;
@@ -93,9 +82,10 @@ stringappend (const char *string1, int end1, const char *string2)
 
   cp1 = string2;
   i = 0;
-  while (*cp1++) i++;
+  while (*cp1++)
+    i++;
 
-  ostring = NEW2(i+end1+1, char);
+  ostring = XCALLOC (char, i + end1 + 1);
 
   cp = ostring;
   cp1 = string1;
@@ -115,9 +105,9 @@ stringappend (const char *string1, int end1, const char *string2)
 `-----------------------------------------------------------------*/
 
 static FILE *
-tryopen (const char *name, const char *mode)
+xfopen (const char *name, const char *mode)
 {
-  FILE	*ptr;
+  FILE *ptr;
 
   ptr = fopen (name, mode);
   if (!ptr)
@@ -131,7 +121,7 @@ tryopen (const char *name, const char *mode)
 `-------------------------------------------------------------*/
 
 static int
-tryclose (FILE *ptr)
+xfclose (FILE *ptr)
 {
   int result;
 
@@ -144,17 +134,56 @@ tryclose (FILE *ptr)
 
   return result;
 }
+
+/*--------------------------------------------------.
+| Save the content of the obstack OBS in FILENAME.  |
+`--------------------------------------------------*/
+
+static void
+obstack_save (struct obstack *obs, const char *filename)
+{
+  FILE *out = xfopen (filename, "w");
+  size_t size = obstack_object_size (obs);
+  fwrite (obstack_finish (obs), 1, size, out);
+  xfclose (out);
+}
+
+
+static const char *
+skeleton_find (const char *envvar, const char *skeleton)
+{
+  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")))
+    {
+      res = XMALLOC (char, strlen (cp) + strlen (skeleton) + 2);
+      sprintf (res, "%s%c%s", cp, '/', skeleton);
+    }
+#endif /* !MSDOS */
+
+  if (!res)
+    res = skeleton;
+
+  return res;
+}
+
 
-/* 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 */
+/*-----------------------------------------------------------------.
+| Open the input file.  Look for the skeletons.  Find the names of |
+| the output files.  Prepare the obstacks.                         |
+`-----------------------------------------------------------------*/
+
 void
-openfiles (void)
+open_files (void)
 {
   char *name_base;
 #ifdef MSDOS
   register char *cp;
 #endif
-  char *filename;
   int base_length;
   int short_base_length;
 
@@ -173,9 +202,9 @@ openfiles (void)
 #endif /* MSDOS */
 
 #if (defined(_WIN32) && !defined(__CYGWIN32__))
-  tmp_base = getenv ("TEMP");		/* Windows95 defines this ... */
+  tmp_base = getenv ("TEMP");	/* Windows95 defines this ... */
   if (tmp_base == 0)
-    tmp_base = getenv ("Temp");		/* ... while NT prefers this */
+    tmp_base = getenv ("Temp");	/* ... while NT prefers this */
   if (tmp_base == 0)
     tmp_base = "";
   strlwr (infile);
@@ -183,19 +212,19 @@ openfiles (void)
 
 #if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__))
   {
-    char *tmp_ptr = getenv("TMPDIR");
+    char *tmp_ptr = getenv ("TMPDIR");
 
     if (tmp_ptr != 0)
       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
   }
-#endif  /* unix || __unix || __unix__ */
+#endif /* unix || __unix || __unix__ */
 
   tmp_len = strlen (tmp_base);
 
   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.  */
+      /* -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);
@@ -218,7 +247,7 @@ openfiles (void)
       short_base_length = strlen (spec_file_prefix);
       /* Count room for `.tab'.  */
       base_length = short_base_length + 4;
-      name_base = (char *) xmalloc (base_length + 1);
+      name_base = XMALLOC (char, base_length + 1);
       /* Append `.tab'.  */
       strcpy (name_base, spec_file_prefix);
 #ifdef VMS
@@ -233,11 +262,11 @@ openfiles (void)
   else
     {
       /* -o was not specified; compute output file name from input
-	 or use y.tab.c, etc., if -y was specified.  */
+         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;
+      name_base = yacc_flag ? FIXED_NAME_BASE : infile;
 
       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 
@@ -247,107 +276,69 @@ openfiles (void)
       short_base_length = base_length;
 
 #ifdef VMS
-      name_base = stringappend(name_base, short_base_length, "_tab");
+      name_base = stringappend (name_base, short_base_length, "_tab");
 #else
 #ifdef MSDOS
-      name_base = stringappend(name_base, short_base_length, "_tab");
+      name_base = stringappend (name_base, short_base_length, "_tab");
 #else
-      name_base = stringappend(name_base, short_base_length, ".tab");
+      name_base = stringappend (name_base, short_base_length, ".tab");
 #endif /* not MSDOS */
 #endif
       base_length = short_base_length + 4;
     }
 
-  finput = tryopen(infile, "r");
+  finput = xfopen (infile, "r");
 
-  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 (!no_parser_flag)
+    fparser = xfopen (skeleton_find ("BISON_SIMPLE", BISON_SIMPLE), "r");
 
-  if (verboseflag)
+  if (verbose_flag)
     {
 #ifdef MSDOS
-      outfile = stringappend(name_base, short_base_length, ".out");
+      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");
+         but that conflicts with Posix.  */
+      outfile = stringappend (name_base, short_base_length, ".output");
 #endif
-      foutput = tryopen(outfile, "w");
+      foutput = xfopen (outfile, "w");
     }
 
-  if (noparserflag)
+  if (no_parser_flag)
     {
       /* use permanent name for actions file */
-      actfile = stringappend(name_base, short_base_length, ".act");
-      faction = tryopen(actfile, "w");
+      actfile = stringappend (name_base, short_base_length, ".act");
     }
 
-#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)
+  if (defines_flag)
     {
-      defsfile = stringappend(name_base, base_length, ".h");
-      fdefines = tryopen(tmpdefsfile, "w+");
+      defsfile = stringappend (name_base, base_length, ".h");
     }
 
-#if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
-  if (! noparserflag)
-    unlink(actfile);
-  unlink(tmpattrsfile);
-  unlink(tmptabfile);
-  unlink(tmpdefsfile);
-#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
-
-	/* These are opened by `done' or `open_extra_files', if at all */
+  /* 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");
+    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");
+  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");
+  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");
+  attrsfile = stringappend (name_base, short_base_length, ".stype.h");
+  guardfile = stringappend (name_base, short_base_length, ".guard.c");
 #endif /* not MSDOS */
 #endif /* not VMS */
+
+  /* Initialize the obstacks. */
+  obstack_init (&action_obstack);
+  obstack_init (&attrs_obstack);
+  obstack_init (&table_obstack);
+  obstack_init (&defines_obstack);
 }
 
 
@@ -360,99 +351,40 @@ openfiles (void)
 void
 open_extra_files (void)
 {
-  FILE *ftmp;
-  int c;
-  char *filename;
-#ifdef MSDOS
-  char *cp;
-#endif
-
-  tryclose(fparser);
+  xfclose (fparser);
 
-  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");
-    }
-
-		/* 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;
+  if (!no_parser_flag)
+    fparser = xfopen (skeleton_find ("BISON_HAIRY", BISON_HAIRY), "r");
+  fguard = xfopen (guardfile, "w");
+}
 
-  fguard = tryopen(guardfile, "w");
 
-}
+/*-----------------------------------------------------.
+| Close the open files, produce all the output files.  |
+`-----------------------------------------------------*/
 
 void
-done (void)
+output_files (void)
 {
-  tryclose(faction);
-  tryclose(fattrs);
-  tryclose(fguard);
-  tryclose(finput);
-  tryclose(fparser);
-  tryclose(foutput);
-
-  /* JF write out the output file */
-  if (!complain_message_count && ftable)
-    {
-      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);
-        }
-    }
-
-#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 */
+  xfclose (fguard);
+  xfclose (finput);
+  xfclose (fparser);
+  xfclose (foutput);
+
+  /* Output the main file.  */
+  obstack_save (&table_obstack, tabfile);
+
+  /* Output the header file if wanted. */
+  if (defines_flag)
+    obstack_save (&defines_obstack, defsfile);
+
+  /* If we output only the table, dump the actions in ACTFILE.
+     */
+  if (no_parser_flag)
+    obstack_save (&action_obstack, actfile);
+
+  /* If we produced a semantic parser ATTRS_OBSTACK must be dumped
+     into its own file, ATTTRSFILE.  */
+  if (semantic_parser)
+    obstack_save (&attrs_obstack, attrsfile);
 }