/*
* Copyright 1993, 1995 Christopher Seiwald.
*
* This file is part of Jam - see jam.c for Copyright information.
*/
# include "jam.h"
# include "filesys.h"
# ifdef macintosh
# define DELIM ':'
/*
* pathunix.c - manipulate file names on UNIX, NT, OS2
*
* External routines:
*
* file_parse() - split a file name into dir/base/suffix/member
* file_build() - build a filename given dir/base/suffix/member
* file_parent() - make a FILENAME point to its parent dir
*
* File_parse() and file_build() just manipuate a string and a structure;
* they do not make system calls.
*
* 04/08/94 (seiwald) - Coherent/386 support added.
* 12/26/93 (seiwald) - handle dir/.suffix properly in file_build()
* 12/19/94 (mikem) - solaris string table insanity support
* 12/21/94 (wingerd) Use backslashes for pathnames - the NT way.
* 02/14/95 (seiwald) - parse and build /xxx properly
* 02/23/95 (wingerd) Compilers on NT can handle "/" in pathnames, so we
* should expect hdr searches to come up with strings
* like "thing/thing.h". So we need to test for "/" as
* well as "\" when parsing pathnames.
* 03/16/95 (seiwald) - fixed accursed typo on line 69.
* 05/03/96 (seiwald) - split from filent.c, fileunix.c
* 12/20/96 (seiwald) - when looking for the rightmost . in a file name,
* don't include the archive member name.
*/
/*
* file_parse() - split a file name into dir/base/suffix/member
*/
void
file_parse( file, f )
char *file;
FILENAME *f;
{
char *p, *q;
char *end;
memset( (char *)f, 0, sizeof( *f ) );
/* Look for <grist> */
if( file[0] == '<' && ( p = strchr( file, '>' ) ) )
{
f->f_grist.ptr = file;
f->f_grist.len = p - file;
file = p + 1;
}
/* Look for dir: */
p = strrchr( file, DELIM );
if( p )
{
f->f_dir.ptr = file;
f->f_dir.len = p - file;
/* Dir of : is : */
#if 0
if( !f->f_dir.len )
++f->f_dir.len;
# else
f->f_dir.len++;
# endif
file = p + 1;
}
end = file + strlen( file );
/* Look for (member) */
if( ( p = strchr( file, '(' ) ) && end[-1] == ')' )
{
f->f_member.ptr = p + 1;
f->f_member.len = end - p - 2;
end = p;
}
/* Look for .suffix */
/* This would be memrchr() */
p = 0;
q = file;
while( q = memchr( q, '.', end - q ) )
p = q++;
if( p )
{
f->f_suffix.ptr = p;
f->f_suffix.len = end - p;
end = p;
}
/* Leaves base */
f->f_base.ptr = file;
f->f_base.len = end - file;
}
/*
* file_build() - build a filename given dir/base/suffix/member
*/
# define DIR_EMPTY 0 /* "" */
# define DIR_DOT 1 /* : */
# define DIR_DOTDOT 2 /* :: */
# define DIR_ABS 3 /* dira:dirb: */
# define DIR_REL 4 /* :dira:dirb: */
# define G_DIR 0 /* take dir */
# define G_ROOT 1 /* take root */
# define G_CAT 2 /* prepend root to dir */
# define G_DTDR 3 /* :: of rel dir */
# define G_DDDD 4 /* make it ::: (../..) */
# define G_MT 5 /* leave it empty */
char grid[5][5] = {
/* EMPTY DOT DOTDOT ABS REL */
/* EMPTY */ { G_MT, G_DIR, G_DIR, G_DIR, G_DIR },
/* DOT */ { G_ROOT, G_DIR, G_DIR, G_DIR, G_DIR },
/* DOTDOT */ { G_ROOT, G_ROOT, G_DDDD, G_DIR, G_DTDR },
/* ABS */ { G_ROOT, G_ROOT, G_ROOT, G_DIR, G_CAT },
/* REL */ { G_ROOT, G_ROOT, G_ROOT, G_DIR, G_CAT }
} ;
static int
file_flags( ptr, len )
char *ptr;
int len;
{
if( !len )
return DIR_EMPTY;
if( len == 1 && ptr[0] == DELIM )
return DIR_DOT;
if( len == 2 && ptr[0] == DELIM && ptr[1] == DELIM )
return DIR_DOTDOT;
if( ptr[0] == DELIM )
return DIR_REL;
return DIR_ABS;
}
void
file_build( f, file, binding )
FILENAME *f;
char *file;
int binding;
{
char *ofile = file;
int dflag, rflag, act;
if( DEBUG_SEARCH )
{
printf("build file: ");
if( f->f_root.len )
printf( "root = '%.*s' ", f->f_root.len, f->f_root.ptr );
if( f->f_dir.len )
printf( "dir = '%.*s' ", f->f_dir.len, f->f_dir.ptr );
if( f->f_base.len )
printf( "base = '%.*s' ", f->f_base.len, f->f_base.ptr );
}
/* Start with the grist. If the current grist isn't */
/* surrounded by <>'s, add them. */
if( f->f_grist.len )
{
if( f->f_grist.ptr[0] != '<' ) *file++ = '<';
memcpy( file, f->f_grist.ptr, f->f_grist.len );
file += f->f_grist.len;
if( file[-1] != '>' ) *file++ = '>';
}
/* Combine root & directory, according to the grid. */
dflag = file_flags( f->f_dir.ptr, f->f_dir.len );
rflag = file_flags( f->f_root.ptr, f->f_root.len );
switch( act = grid[ rflag ][ dflag ] )
{
case G_DTDR:
/* :: of rel dir */
*file++ = DELIM;
/* fall through */
case G_DIR:
/* take dir */
memcpy( file, f->f_dir.ptr, f->f_dir.len );
file += f->f_dir.len;
break;
case G_ROOT:
/* take root */
memcpy( file, f->f_root.ptr, f->f_root.len );
file += f->f_root.len;
break;
case G_CAT:
/* prepend root to dir */
memcpy( file, f->f_root.ptr, f->f_root.len );
file += f->f_root.len;
if( file[-1] == DELIM ) --file;
memcpy( file, f->f_dir.ptr, f->f_dir.len );
file += f->f_dir.len;
break;
case G_DDDD:
/* make it ::: (../..) */
strcpy( file, ":::" );
file += 3;
break;
}
/* Put : between dir and file (if none already) */
if( act != G_MT &&
file[-1] != DELIM &&
( f->f_base.len || f->f_suffix.len ) )
{
*file++ = DELIM;
}
if( f->f_base.len )
{
memcpy( file, f->f_base.ptr, f->f_base.len );
file += f->f_base.len;
}
if( f->f_suffix.len )
{
memcpy( file, f->f_suffix.ptr, f->f_suffix.len );
file += f->f_suffix.len;
}
if( f->f_member.len )
{
*file++ = '(';
memcpy( file, f->f_member.ptr, f->f_member.len );
file += f->f_member.len;
*file++ = ')';
}
*file = 0;
if( DEBUG_SEARCH )
printf(" -> '%s'\n", ofile);
}
/*
* file_parent() - make a FILENAME point to its parent dir
*/
void
file_parent( f )
FILENAME *f;
{
/* just set everything else to nothing */
f->f_base.ptr =
f->f_suffix.ptr =
f->f_member.ptr = "";
f->f_base.len =
f->f_suffix.len =
f->f_member.len = 0;
}
# endif /* macintosh */