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-rw-r--r--jam-files/engine/pathvms.c406
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diff --git a/jam-files/engine/pathvms.c b/jam-files/engine/pathvms.c
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-/*
- * Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
- *
- * This file is part of Jam - see jam.c for Copyright information.
- */
-
-/* This file is ALSO:
- * Copyright 2001-2004 David Abrahams.
- * Distributed under the Boost Software License, Version 1.0.
- * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
- */
-
-# include "jam.h"
-# include "pathsys.h"
-
-# ifdef OS_VMS
-
-# define DEBUG
-
-/*
- * pathvms.c - manipulate file names on VMS
- *
- * External routines:
- *
- * path_parse() - split a file name into dir/base/suffix/member
- * path_build() - build a filename given dir/base/suffix/member
- * path_parent() - make a PATHNAME point to its parent dir
- *
- * File_parse() and path_build() just manipuate a string and a structure;
- * they do not make system calls.
- *
- * WARNING! This file contains voodoo logic, as black magic is
- * necessary for wrangling with VMS file name. Woe be to people
- * who mess with this code.
- *
- * 02/09/95 (seiwald) - bungled R=[xxx] - was using directory length!
- * 05/03/96 (seiwald) - split from filevms.c
- */
-
-/*
- * path_parse() - split a file name into dir/base/suffix/member.
- */
-
-void path_parse( char * file, PATHNAME * f )
-{
- char * p;
- char * 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 dev:[dir] or dev: */
-
- if ( ( p = strchr( file, ']' ) ) || ( p = strchr( file, ':' ) ) )
- {
- f->f_dir.ptr = file;
- f->f_dir.len = p + 1 - file;
- 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 = (char *)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;
-
- /* Is this a directory without a file spec? */
- f->parent = 0;
-}
-
-/*
- * dir mods result
- * --- --- ------
- * Rerooting:
- *
- * (none) :R=dev: dev:
- * devd: :R=dev: devd:
- * devd:[dir] :R=dev: devd:[dir]
- * [.dir] :R=dev: dev:[dir] questionable
- * [dir] :R=dev: dev:[dir]
- *
- * (none) :R=[rdir] [rdir] questionable
- * devd: :R=[rdir] devd:
- * devd:[dir] :R=[rdir] devd:[dir]
- * [.dir] :R=[rdir] [rdir.dir] questionable
- * [dir] :R=[rdir] [rdir]
- *
- * (none) :R=dev:[root] dev:[root]
- * devd: :R=dev:[root] devd:
- * devd:[dir] :R=dev:[root] devd:[dir]
- * [.dir] :R=dev:[root] dev:[root.dir]
- * [dir] :R=dev:[root] [dir]
- *
- * Climbing to parent:
- *
- */
-
-# define DIR_EMPTY 0 /* empty string */
-# define DIR_DEV 1 /* dev: */
-# define DIR_DEVDIR 2 /* dev:[dir] */
-# define DIR_DOTDIR 3 /* [.dir] */
-# define DIR_DASHDIR 4 /* [-] or [-.dir] */
-# define DIR_ABSDIR 5 /* [dir] */
-# define DIR_ROOT 6 /* [000000] or dev:[000000] */
-
-# define G_DIR 0 /* take just dir */
-# define G_ROOT 1 /* take just root */
-# define G_VAD 2 /* root's dev: + [abs] */
-# define G_DRD 3 /* root's dev:[dir] + [.rel] */
-# define G_VRD 4 /* root's dev: + [.rel] made [abs] */
-# define G_DDD 5 /* root's dev:[dir] + . + [dir] */
-
-static int grid[7][7] = {
-
-/* root/dir EMPTY DEV DEVDIR DOTDIR DASH, ABSDIR ROOT */
-/* EMPTY */ G_DIR, G_DIR, G_DIR, G_DIR, G_DIR, G_DIR, G_DIR,
-/* DEV */ G_ROOT, G_DIR, G_DIR, G_VRD, G_VAD, G_VAD, G_VAD,
-/* DEVDIR */ G_ROOT, G_DIR, G_DIR, G_DRD, G_VAD, G_VAD, G_VAD,
-/* DOTDIR */ G_ROOT, G_DIR, G_DIR, G_DRD, G_DIR, G_DIR, G_DIR,
-/* DASHDIR */ G_ROOT, G_DIR, G_DIR, G_DRD, G_DDD, G_DIR, G_DIR,
-/* ABSDIR */ G_ROOT, G_DIR, G_DIR, G_DRD, G_DIR, G_DIR, G_DIR,
-/* ROOT */ G_ROOT, G_DIR, G_DIR, G_VRD, G_DIR, G_DIR, G_DIR,
-
-};
-
-struct dirinf
-{
- int flags;
-
- struct
- {
- char * ptr;
- int len;
- } dev, dir;
-};
-
-static char * strnchr( char * buf, int c, int len )
-{
- while ( len-- )
- if ( *buf && ( *buf++ == c ) )
- return buf - 1;
- return 0;
-}
-
-
-static void dir_flags( char * buf, int len, struct dirinf * i )
-{
- char * p;
-
- if ( !buf || !len )
- {
- i->flags = DIR_EMPTY;
- i->dev.ptr =
- i->dir.ptr = 0;
- i->dev.len =
- i->dir.len = 0;
- }
- else if ( p = strnchr( buf, ':', len ) )
- {
- i->dev.ptr = buf;
- i->dev.len = p + 1 - buf;
- i->dir.ptr = buf + i->dev.len;
- i->dir.len = len - i->dev.len;
- i->flags = i->dir.len && *i->dir.ptr == '[' ? DIR_DEVDIR : DIR_DEV;
- }
- else
- {
- i->dev.ptr = buf;
- i->dev.len = 0;
- i->dir.ptr = buf;
- i->dir.len = len;
-
- if ( ( *buf == '[' ) && ( buf[1] == ']' ) )
- i->flags = DIR_EMPTY;
- else if ( ( *buf == '[' ) && ( buf[1] == '.' ) )
- i->flags = DIR_DOTDIR;
- else if ( ( *buf == '[' ) && ( buf[1] == '-' ) )
- i->flags = DIR_DASHDIR;
- else
- i->flags = DIR_ABSDIR;
- }
-
- /* But if its rooted in any way. */
-
- if ( ( i->dir.len == 8 ) && !strncmp( i->dir.ptr, "[000000]", 8 ) )
- i->flags = DIR_ROOT;
-}
-
-
-/*
- * path_build() - build a filename given dir/base/suffix/member
- */
-
-void path_build( PATHNAME * f, string * file, int binding )
-{
- struct dirinf root;
- struct dirinf dir;
- int g;
-
- file_build1( f, file );
-
- /* Get info on root and dir for combining. */
- dir_flags( f->f_root.ptr, f->f_root.len, &root );
- dir_flags( f->f_dir.ptr, f->f_dir.len, &dir );
-
- /* Combine. */
- switch ( g = grid[ root.flags ][ dir.flags ] )
- {
- case G_DIR:
- /* take dir */
- string_append_range( file, f->f_dir.ptr, f->f_dir.ptr + f->f_dir.len );
- break;
-
- case G_ROOT:
- /* take root */
- string_append_range( file, f->f_root.ptr, f->f_root.ptr + f->f_root.len );
- break;
-
- case G_VAD:
- /* root's dev + abs directory */
- string_append_range( file, root.dev.ptr, root.dev.ptr + root.dev.len );
- string_append_range( file, dir.dir.ptr, dir.dir.ptr + dir.dir.len );
- break;
-
- case G_DRD:
- case G_DDD:
- /* root's dev:[dir] + rel directory */
- string_append_range( file, f->f_root.ptr, f->f_root.ptr + f->f_root.len );
-
- /* sanity checks: root ends with ] */
-
- if ( file->value[file->size - 1] == ']' )
- string_pop_back( file );
-
- /* Add . if separating two -'s */
-
- if ( g == G_DDD )
- string_push_back( file, '.' );
-
- /* skip [ of dir */
- string_append_range( file, dir.dir.ptr + 1, dir.dir.ptr + 1 + dir.dir.len - 1 );
- break;
-
- case G_VRD:
- /* root's dev + rel directory made abs */
- string_append_range( file, root.dev.ptr, root.dev.ptr + root.dev.len );
- string_push_back( file, '[' );
- /* skip [. of rel dir */
- string_append_range( file, dir.dir.ptr + 2, dir.dir.ptr + 2 + dir.dir.len - 2 );
- break;
- }
-
-# ifdef DEBUG
- if ( DEBUG_SEARCH && ( root.flags || dir.flags ) )
- printf( "%d x %d = %d (%s)\n", root.flags, dir.flags,
- grid[ root.flags ][ dir.flags ], file->value );
-# endif
-
- /*
- * Now do the special :P modifier when no file was present.
- * (none) (none)
- * [dir1.dir2] [dir1]
- * [dir] [000000]
- * [.dir] (none)
- * [] []
- */
-
- if ( ( file->value[ file->size - 1 ] == ']' ) && f->parent )
- {
- char * p = file->value + file->size;
- while ( p-- > file->value )
- {
- if ( *p == '.' )
- {
- /* If we've truncated everything and left with '[',
- return empty string. */
- if ( p == file->value + 1 )
- string_truncate( file, 0 );
- else
- {
- string_truncate( file, p - file->value );
- string_push_back( file, ']' );
- }
- break;
- }
-
- if ( *p == '-' )
- {
- /* handle .- or - */
- if ( ( p > file->value ) && ( p[ -1 ] == '.' ) )
- --p;
-
- *p++ = ']';
- break;
- }
-
- if ( *p == '[' )
- {
- if ( p[ 1 ] == ']' )
- {
- /* CONSIDER: I don't see any use of this code. We immediately
- break, and 'p' is a local variable. */
- p += 2;
- }
- else
- {
- string_truncate( file, p - file->value );
- string_append( file, "[000000]" );
- }
- break;
- }
- }
- }
-
- /* Now copy the file pieces. */
- if ( f->f_base.len )
- {
- string_append_range( file, f->f_base.ptr, f->f_base.ptr + f->f_base.len );
- }
-
- /* If there is no suffix, we append a "." onto all generated names. This
- * keeps VMS from appending its own (wrong) idea of what the suffix should
- * be.
- */
- if ( f->f_suffix.len )
- string_append_range( file, f->f_suffix.ptr, f->f_suffix.ptr + f->f_suffix.len );
- else if ( binding && f->f_base.len )
- string_push_back( file, '.' );
-
- if ( f->f_member.len )
- {
- string_push_back( file, '(' );
- string_append_range( file, f->f_member.ptr, f->f_member.ptr + f->f_member.len );
- string_push_back( file, ')' );
- }
-
-# ifdef DEBUG
- if ( DEBUG_SEARCH )
- printf( "built %.*s + %.*s / %.*s suf %.*s mem %.*s -> %s\n",
- f->f_root.len, f->f_root.ptr,
- f->f_dir.len, f->f_dir.ptr,
- f->f_base.len, f->f_base.ptr,
- f->f_suffix.len, f->f_suffix.ptr,
- f->f_member.len, f->f_member.ptr,
- file->value );
-# endif
-}
-
-
-/*
- * path_parent() - make a PATHNAME point to its parent dir
- */
-
-void path_parent( PATHNAME * f )
-{
- if ( f->f_base.len )
- {
- 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;
- }
- else
- {
- f->parent = 1;
- }
-}
-
-# endif /* VMS */