Category : C Source Code
Archive   : OHLMAKE.ZIP
Filename : FILE.C

 
Output of file : FILE.C contained in archive : OHLMAKE.ZIP
/* Copyright (C) 1988, 1989, 1990 Free Software Foundation, Inc.
This file is part of GNU Make.

GNU Make 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 1, or (at your option)
any later version.

GNU Make 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 GNU Make; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

/*
* MS-DOS port (c) 1990 by Thorsten Ohl
*
* To this port, the same copying conditions apply as to the
* original release.
*
* IMPORTANT:
* This file is not identical to the original GNU release!
* You should have received this code as patch to the official
* GNU release.
*
* MORE IMPORTANT:
* This port comes with ABSOLUTELY NO WARRANTY.
*
* $Header: e:/gnu/make/RCS/file.c'v 3.58.0.3 90/07/24 00:21:16 tho Exp $
*/

#include "make.h"
#include "commands.h"
#include "dep.h"
#include "file.h"
#include "variable.h"
#include

#ifdef MSDOS
#include
#else /* not MSDOS */ /* */
extern int errno;
#endif /* not MSDOS */


/* Hash table of files the makefile knows how to make. */

#ifndef FILE_BUCKETS
#define FILE_BUCKETS 1007
#endif
static struct file *files[FILE_BUCKETS];

/* Number of files with the `intermediate' flag set. */

unsigned int num_intermediates = 0;


/* Access the hash table of all file records.
lookup_file given a name, return the struct file * for that name,
or nil if there is none.
enter_file similar, but create one if there is none. */

struct file *
lookup_file (name)
char *name;
{
register struct file *f;
register char *n;
register unsigned int hashval;

if (*name == '\0')
abort ();

while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
name += 2;

hashval = 0;
for (n = name; *n != '\0'; ++n)
HASH (hashval, *n);
hashval %= FILE_BUCKETS;

for (f = files[hashval]; f != 0; f = f->next)
if (streq (f->name, name))
return f;
return 0;
}

struct file *
enter_file (name)
char *name;
{
register struct file *f, *new;
register char *n;
register unsigned int hashval;

if (*name == '\0')
abort ();

hashval = 0;
for (n = name; *n != '\0'; ++n)
HASH (hashval, *n);
hashval %= FILE_BUCKETS;

for (f = files[hashval]; f != 0; f = f->next)
if (streq (f->name, name))
break;

if (f != 0 && !f->double_colon)
return f;

new = (struct file *) xmalloc (sizeof (struct file));
bzero ((char *) new, sizeof (struct file));
new->name = name;
new->update_status = -1;

if (f == 0)
{
/* This is a completely new file. */
new->next = files[hashval];
files[hashval] = new;
}
else
{
/* There is already a double-colon entry for this file. */
while (f->prev != 0)
f = f->prev;
f->prev = new;
}

return new;
}

/* Rename FILE to NAME. This is not as simple as resetting
the `name' member, since it must be put in a new hash bucket,
and possibly merged with an existing file called NAME. */

void
rename_file (file, name)
register struct file *file;
char *name;
{
char *oldname = file->name;
register unsigned int oldhash, newhash;
register char *n;
register struct file *f;
struct file *oldfile;

/* Find the hash values of the old and new names. */

oldhash = 0;
for (n = oldname; *n != '\0'; ++n)
HASH (oldhash, *n);
oldhash %= FILE_BUCKETS;

newhash = 0;
for (n = name; *n != '\0'; ++n)
HASH (newhash, *n);
newhash %= FILE_BUCKETS;

/* Look for an existing file under the new name. */

for (oldfile = files[newhash]; oldfile != 0; oldfile = oldfile->next)
if (streq (oldfile->name, name))
break;

if (newhash != oldhash || oldfile != 0)
{
/* Remove FILE from its hash bucket. */

struct file *lastf = 0;

for (f = files[oldhash]; f != file; f = f->next)
lastf = f;

if (lastf == 0)
files[oldhash] = f->next;
else
lastf->next = f->next;
}

/* Give FILE its new name. */

for (f = file; f != 0; f = f->prev)
f->name = name;

if (oldfile == 0)
{
/* There is no existing file with the new name. */

if (newhash != oldhash)
{
/* Put FILE in its new hash bucket. */
file->next = files[newhash];
files[newhash] = file;
}
}
else
{
/* There is an existing file with the new name.
We must merge FILE into the existing file. */

register struct dep *d;

if (file->cmds != 0)
{
if (oldfile->cmds == 0)
oldfile->cmds = file->cmds;
else
{
/* We have two sets of commands. We will go with the
one given in the rule explicitly mentioning this name,
but give a message to let the user know what's going on. */
error ("%s:%u: commands were specified for file `%s' at %s:%u",
file->cmds->filename, file->cmds->lineno,
oldname, oldfile->cmds->filename, oldfile->cmds->lineno);
error ("%s:%u: but `%s' is now considered the same file as `%s'",
file->cmds->filename, file->cmds->lineno,
oldname, name);
error ("%s:%u: commands for `%s' will be ignored \
in favor of those for `%s",
file->cmds->filename, file->cmds->lineno,
name, oldname);
}
}

/* Merge the dependencies of the two files. */

d = oldfile->deps;
if (d == 0)
oldfile->deps = file->deps;
else
{
while (d->next != 0)
d = d->next;
d->next = file->deps;
uniquize_deps (oldfile->deps);
}

merge_variable_set_lists (&oldfile->variables, file->variables);

if (oldfile->double_colon && !file->double_colon)
fatal ("can't rename single-colon `%s' to double-colon `%s'",
oldname, name);
if (!oldfile->double_colon && file->double_colon)
fatal ("can't rename double-colon `%s' to single-colon `%s'",
oldname, name);

#define MERGE(field) oldfile->field |= file->field
MERGE (precious);
MERGE (tried_implicit);
MERGE (updating);
MERGE (updated);
MERGE (is_target);
MERGE (cmd_target);
MERGE (phony);
#undef MERGE

file->renamed = oldfile;
}
}

/* Remove all nonprecious intermediate files.
If SIG is nonzero, this was caused by a fatal signal,
meaning that a different message will be printed, and
the message will go to stderr rather than stdout. */

void
remove_intermediates (sig)
int sig;
{
register int i;
register struct file *f;
char doneany;

if (!sig && just_print_flag)
return;

doneany = 0;
for (i = 0; i < FILE_BUCKETS; ++i)
for (f = files[i]; f != 0; f = f->next)
if (f->intermediate && (f->dontcare || !f->precious))
{
int status;
if (just_print_flag)
status = 0;
else
{
status = unlink (f->name);
if (status < 0 && errno == ENOENT)
continue;
}
if (!f->dontcare)
{
if (sig)
error ("*** Deleting file `%s'", f->name);
else if (!silent_flag && !just_print_flag)
{
if (!doneany)
{
fputs ("rm ", stdout);
doneany = 1;
}
putchar (' ');
fputs (f->name, stdout);
fflush (stdout);
}
if (status < 0)
perror_with_name ("unlink: ", f->name);
}
}

if (doneany && !sig)
{
putchar ('\n');
fflush (stdout);
}
}

/* For each dependency of each file, make the `struct dep' point
at the appropriate `struct file' (which may have to be created).

Also mark the files depended on by .PRECIOUS and .PHONY. */

void
snap_deps ()
{
register struct file *f, *f2;
register struct dep *d;
register int i;

/* Enter each dependency name as a file. */
for (i = 0; i < FILE_BUCKETS; ++i)
for (f = files[i]; f != 0; f = f->next)
for (f2 = f; f2 != 0; f2 = f2->prev)
for (d = f2->deps; d != 0; d = d->next)
if (d->name != 0)
{
d->file = lookup_file (d->name);
if (d->file == 0)
d->file = enter_file (d->name);
else
free (d->name);
d->name = 0;
}

for (f = lookup_file (".PRECIOUS"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->precious = 1;

for (f = lookup_file (".PHONY"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
{
/* Mark this file as phony and nonexistent. */
f2->phony = 1;
f2->last_mtime = (time_t) -1;
}
}

/* Print the data base of files. */

void
print_file_data_base ()
{
register unsigned int i, nfiles, per_bucket;
register struct file *file;
register struct dep *d;

puts ("\n# Files");

per_bucket = nfiles = 0;
for (i = 0; i < FILE_BUCKETS; ++i)
{
register unsigned int this_bucket = 0;

for (file = files[i]; file != 0; file = file->next)
{
register struct file *f;

++this_bucket;

for (f = file; f != 0; f = f->prev)
{
putchar ('\n');
if (!f->is_target)
puts ("# Not a target:");
printf ("%s:%s", f->name, f->double_colon ? ":" : "");

for (d = f->deps; d != 0; d = d->next)
printf (" %s", dep_name (d));
putchar ('\n');

if (f->precious)
puts ("# Precious file (dependency of .PRECIOUS).");
if (f->phony)
puts ("# Phony target (dependency of .PHONY).");
if (f->cmd_target)
puts ("# Command-line target.");
if (f->dontcare)
puts ("# A default or MAKEFILES makefile.");
printf ("# Implicit rule search has%s been done.\n",
f->tried_implicit ? "" : " not");
if (f->stem != 0)
printf ("# Implicit/static pattern stem: `%s'\n", f->stem);
if (f->intermediate)
puts ("# File is an intermediate dependency.");
if (f->also_make != 0)
{
register unsigned int i;
fputs ("# Also makes:", stdout);
for (i = 0; f->also_make[i] != 0; ++i)
printf (" %s", f->also_make[i]);
putchar ('\n');
}
if (f->last_mtime == (time_t) 0)
puts ("# Modification time never checked.");
else if (f->last_mtime == (time_t) -1)
puts ("# File does not exist.");
else
printf ("# Last modified %.24s (%ld)\n",
ctime (&f->last_mtime), (long int) f->last_mtime);
printf ("# File has%s been updated.\n",
f->updated ? "" : " not");
switch (f->command_state)
{
case cs_running:
puts ("# Commands currently running (?!).");
break;
case cs_deps_running:
puts ("# Dependencies currently being made (?!).");
break;
case cs_not_started:
case cs_finished:
switch (f->update_status)
{
case -1:
break;
case 0:
puts ("# Successfully updated.");
break;
case 1:
puts ("# Failed to be updated.");
break;
default:
puts ("# Invalid value in `update_status' member!");
fflush (stdout);
fflush (stderr);
abort ();
}
break;
default:
puts ("# Invalid value in `command_state' member!");
fflush (stdout);
fflush (stderr);
abort ();
}

if (f->variables != 0)
print_file_variables (file);

if (f->cmds != 0)
print_commands (f->cmds);
}
}

nfiles += this_bucket;
if (this_bucket > per_bucket)
per_bucket = this_bucket;
}

if (nfiles == 0)
puts ("\n# No files.");
else
{
printf ("\n# %u files in %u hash buckets.\n", nfiles, FILE_BUCKETS);
#ifndef NO_FLOAT
printf ("# average %.1f files per bucket, max %u files in one bucket.\n",
((double) nfiles) * 100.0 / (double) FILE_BUCKETS, per_bucket);
#endif
}
}
/* Copyright (C) 1988, 1989, 1990 Free Software Foundation, Inc.
This file is part of GNU Make.

GNU Make 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 1, or (at your option)
any later version.

GNU Make 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 GNU Make; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "make.h"
#include "commands.h"
#include "dep.h"
#include "file.h"
#include "variable.h"
#include


extern int errno;


/* Hash table of files the makefile knows how to make. */

#ifndef FILE_BUCKETS
#define FILE_BUCKETS 1007
#endif
static struct file *files[FILE_BUCKETS];

/* Number of files with the `intermediate' flag set. */

unsigned int num_intermediates = 0;


/* Access the hash table of all file records.
lookup_file given a name, return the struct file * for that name,
or nil if there is none.
enter_file similar, but create one if there is none. */

struct file *
lookup_file (name)
char *name;
{
register struct file *f;
register char *n;
register unsigned int hashval;

if (*name == '\0')
abort ();

while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
name += 2;

hashval = 0;
for (n = name; *n != '\0'; ++n)
HASH (hashval, *n);
hashval %= FILE_BUCKETS;

for (f = files[hashval]; f != 0; f = f->next)
if (streq (f->name, name))
return f;
return 0;
}

struct file *
enter_file (name)
char *name;
{
register struct file *f, *new;
register char *n;
register unsigned int hashval;

if (*name == '\0')
abort ();

hashval = 0;
for (n = name; *n != '\0'; ++n)
HASH (hashval, *n);
hashval %= FILE_BUCKETS;

for (f = files[hashval]; f != 0; f = f->next)
if (streq (f->name, name))
break;

if (f != 0 && !f->double_colon)
return f;

new = (struct file *) xmalloc (sizeof (struct file));
bzero ((char *) new, sizeof (struct file));
new->name = name;
new->update_status = -1;

if (f == 0)
{
/* This is a completely new file. */
new->next = files[hashval];
files[hashval] = new;
}
else
{
/* There is already a double-colon entry for this file. */
while (f->prev != 0)
f = f->prev;
f->prev = new;
}

return new;
}

/* Rename FILE to NAME. This is not as simple as resetting
the `name' member, since it must be put in a new hash bucket,
and possibly merged with an existing file called NAME. */

void
rename_file (file, name)
register struct file *file;
char *name;
{
char *oldname = file->name;
register unsigned int oldhash, newhash;
register char *n;
register struct file *f;
struct file *oldfile;

/* Find the hash values of the old and new names. */

oldhash = 0;
for (n = oldname; *n != '\0'; ++n)
HASH (oldhash, *n);
oldhash %= FILE_BUCKETS;

newhash = 0;
for (n = name; *n != '\0'; ++n)
HASH (newhash, *n);
newhash %= FILE_BUCKETS;

/* Look for an existing file under the new name. */

for (oldfile = files[newhash]; oldfile != 0; oldfile = oldfile->next)
if (streq (oldfile->name, name))
break;

if (newhash != oldhash || oldfile != 0)
{
/* Remove FILE from its hash bucket. */

struct file *lastf = 0;

for (f = files[oldhash]; f != file; f = f->next)
lastf = f;

if (lastf == 0)
files[oldhash] = f->next;
else
lastf->next = f->next;
}

/* Give FILE its new name. */

for (f = file; f != 0; f = f->prev)
f->name = name;

if (oldfile == 0)
{
/* There is no existing file with the new name. */

if (newhash != oldhash)
{
/* Put FILE in its new hash bucket. */
file->next = files[newhash];
files[newhash] = file;
}
}
else
{
/* There is an existing file with the new name.
We must merge FILE into the existing file. */

register struct dep *d;

if (file->cmds != 0)
{
if (oldfile->cmds == 0)
oldfile->cmds = file->cmds;
else
{
/* We have two sets of commands. We will go with the
one given in the rule explicitly mentioning this name,
but give a message to let the user know what's going on. */
error ("%s:%u: commands were specified for file `%s' at %s:%u",
file->cmds->filename, file->cmds->lineno,
oldname, oldfile->cmds->filename, oldfile->cmds->lineno);
error ("%s:%u: but `%s' is now considered the same file as `%s'",
file->cmds->filename, file->cmds->lineno,
oldname, name);
error ("%s:%u: commands for `%s' will be ignored \
in favor of those for `%s",
file->cmds->filename, file->cmds->lineno,
name, oldname);
}
}

/* Merge the dependencies of the two files. */

d = oldfile->deps;
if (d == 0)
oldfile->deps = file->deps;
else
{
while (d->next != 0)
d = d->next;
d->next = file->deps;
uniquize_deps (oldfile->deps);
}

merge_variable_set_lists (&oldfile->variables, file->variables);

if (oldfile->double_colon && !file->double_colon)
fatal ("can't rename single-colon `%s' to double-colon `%s'",
oldname, name);
if (!oldfile->double_colon && file->double_colon)
fatal ("can't rename double-colon `%s' to single-colon `%s'",
oldname, name);

#define MERGE(field) oldfile->field |= file->field
MERGE (precious);
MERGE (tried_implicit);
MERGE (updating);
MERGE (updated);
MERGE (is_target);
MERGE (cmd_target);
MERGE (phony);
#undef MERGE

file->renamed = oldfile;
}
}

/* Remove all nonprecious intermediate files.
If SIG is nonzero, this was caused by a fatal signal,
meaning that a different message will be printed, and
the message will go to stderr rather than stdout. */

void
remove_intermediates (sig)
int sig;
{
register int i;
register struct file *f;
char doneany;

if (!sig && just_print_flag)
return;

doneany = 0;
for (i = 0; i < FILE_BUCKETS; ++i)
for (f = files[i]; f != 0; f = f->next)
if (f->intermediate && (f->dontcare || !f->precious))
{
int status;
if (just_print_flag)
status = 0;
else
{
status = unlink (f->name);
if (status < 0 && errno == ENOENT)
continue;
}
if (!f->dontcare)
{
if (sig)
error ("*** Deleting file `%s'", f->name);
else if (!silent_flag && !just_print_flag)
{
if (!doneany)
{
fputs ("rm ", stdout);
doneany = 1;
}
putchar (' ');
fputs (f->name, stdout);
fflush (stdout);
}
if (status < 0)
perror_with_name ("unlink: ", f->name);
}
}

if (doneany && !sig)
{
putchar ('\n');
fflush (stdout);
}
}

/* For each dependency of each file, make the `struct dep' point
at the appropriate `struct file' (which may have to be created).

Also mark the files depended on by .PRECIOUS and .PHONY. */

void
snap_deps ()
{
register struct file *f, *f2;
register struct dep *d;
register int i;

/* Enter each dependency name as a file. */
for (i = 0; i < FILE_BUCKETS; ++i)
for (f = files[i]; f != 0; f = f->next)
for (f2 = f; f2 != 0; f2 = f2->prev)
for (d = f2->deps; d != 0; d = d->next)
if (d->name != 0)
{
d->file = lookup_file (d->name);
if (d->file == 0)
d->file = enter_file (d->name);
else
free (d->name);
d->name = 0;
}

for (f = lookup_file (".PRECIOUS"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->precious = 1;

for (f = lookup_file (".PHONY"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
{
/* Mark this file as phony and nonexistent. */
f2->phony = 1;
f2->last_mtime = (time_t) -1;
}
}

/* Print the data base of files. */

void
print_file_data_base ()
{
register unsigned int i, nfiles, per_bucket;
register struct file *file;
register struct dep *d;

puts ("\n# Files");

per_bucket = nfiles = 0;
for (i = 0; i < FILE_BUCKETS; ++i)
{
register unsigned int this_bucket = 0;

for (file = files[i]; file != 0; file = file->next)
{
register struct file *f;

++this_bucket;

for (f = file; f != 0; f = f->prev)
{
putchar ('\n');
if (!f->is_target)
puts ("# Not a target:");
printf ("%s:%s", f->name, f->double_colon ? ":" : "");

for (d = f->deps; d != 0; d = d->next)
printf (" %s", dep_name (d));
putchar ('\n');

if (f->precious)
puts ("# Precious file (dependency of .PRECIOUS).");
if (f->phony)
puts ("# Phony target (dependency of .PHONY).");
if (f->cmd_target)
puts ("# Command-line target.");
if (f->dontcare)
puts ("# A default or MAKEFILES makefile.");
printf ("# Implicit rule search has%s been done.\n",
f->tried_implicit ? "" : " not");
if (f->stem != 0)
printf ("# Implicit/static pattern stem: `%s'\n", f->stem);
if (f->intermediate)
puts ("# File is an intermediate dependency.");
if (f->also_make != 0)
{
register unsigned int i;
fputs ("# Also makes:", stdout);
for (i = 0; f->also_make[i] != 0; ++i)
printf (" %s", f->also_make[i]);
putchar ('\n');
}
if (f->last_mtime == (time_t) 0)
puts ("# Modification time never checked.");
else if (f->last_mtime == (time_t) -1)
puts ("# File does not exist.");
else
printf ("# Last modified %.24s (%ld)\n",
ctime (&f->last_mtime), (long int) f->last_mtime);
printf ("# File has%s been updated.\n",
f->updated ? "" : " not");
switch (f->command_state)
{
case cs_running:
puts ("# Commands currently running (?!).");
break;
case cs_deps_running:
puts ("# Dependencies currently being made (?!).");
break;
case cs_not_started:
case cs_finished:
switch (f->update_status)
{
case -1:
break;
case 0:
puts ("# Successfully updated.");
break;
case 1:
puts ("# Failed to be updated.");
break;
default:
puts ("# Invalid value in `update_status' member!");
fflush (stdout);
fflush (stderr);
abort ();
}
break;
default:
puts ("# Invalid value in `command_state' member!");
fflush (stdout);
fflush (stderr);
abort ();
}

if (f->variables != 0)
print_file_variables (file);

if (f->cmds != 0)
print_commands (f->cmds);
}
}

nfiles += this_bucket;
if (this_bucket > per_bucket)
per_bucket = this_bucket;
}

if (nfiles == 0)
puts ("\n# No files.");
else
{
printf ("\n# %u files in %u hash buckets.\n", nfiles, FILE_BUCKETS);
#ifndef NO_FLOAT
printf ("# average %.1f files per bucket, max %u files in one bucket.\n",
((double) nfiles) * 100.0 / (double) FILE_BUCKETS, per_bucket);
#endif
}
}


  3 Responses to “Category : C Source Code
Archive   : OHLMAKE.ZIP
Filename : FILE.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/