OS/2 Shareware BBS: 22 gnu/22-gnu.zip/fweb153.zip/fweb-1.53/web/sfile.hweb

Text File | 1995-09-23 | 3KB | 93 lines

@z --- sfile.hweb ---

FWEB version 1.53 (September 23, 1995)

Based on version 0.5 of S. Levy's CWEB [copyright (C) 1987 Princeton University]

@x-----------------------------------------------------------------------------

@ Now we deal with the possibility that we will be including files from
other than the current directory. Line commands may change the apparent
directory, so an include intended to be from the current directory may not
succeed. Here we'll code in the actual \FWEB\ directory structure, defining
two macros |VFILE| and |SFILE| to generate a file name from the top-level
directory or a specific subdirectory, respectively. In doing this, we use
the environmental built-in macro |_HOME|.  We construct the file name in Unix
format, even for~VMS. We do this in a special way so that we can then
use the |$TRANSLIT| built-in in two different ways depending on whether
we're on the VAX or a Unix system.

@m VFILE(name) #name
@m SFILE(name) #name

@#if 0

@#ifndef FWEB_HOME
    @m FWEB_HOME _HOME/fweb/v1 /* E.g., \.{/u/krommes/fweb/v1}. */
@#endif

@#ifndef SDIR /* One might override this from the command line or ini file. */

/* \.{Machine-dependent}: Specify location of the bootstrap code. */
    @#if ANSI
        @m SDIR FWEB_HOME/unix/ansi
    @#elif APOLLO
        @m SDIR FWEB_HOME/unix/apollo
    @#elif IBMPC
        @m SDIR FWEB_HOME/pc
    @#elif DSU
        @m SDIR FWEB_HOME/unix/dsu
    @#elif MAC
        @m SDIR FWEB_HOME/unix/mac
    @#elif MISC
        @m SDIR FWEB_HOME/misc
    @#elif SGI
        @m SDIR FWEB_HOME/unix/sgi
    @#elif SUN
        @m SDIR FWEB_HOME/unix/sun
    @#elif VAX
        @m SDIR FWEB_HOME/vax
    @#else
        @m SDIR . /* Current directory. */
    @#endif /* Bootstrap locations. */

@#endif /* |SDIR| */

@#ifdef VFILE
    @m VFILE(name) FL_NM_FMT(FWEB_HOME,#!name) /* File in top-level
directory. */
@#else
    @m VFILE(name) #name
@#endif /* |VFILE| */

@#ifdef SFILE
    @m SFILE(name) FL_NM_FMT(SDIR,#!name) /* File in specific
subdirectory. */
@#else
    @m SFILE(name) #name
@#endif /* |SFILE| */

@m FL_NM_FMT(sub,name) FL_NM_FMT0(sub>#!name)

/* \.{Machine-dependent}: Translate file-name formats. */
@#if VAX
    @m FL_NM_FMT0(name) $STRING($TRANSLIT(#name,"/>]",".]")) /* \.] is
deleted. */
@#elif IBMPC
    @m FL_NM_FMT0(name) $STRING($TRANSLIT(#name,">","\\")) /* The PC is
        perverse, using backslashes. */
@#else
    @m FL_NM_FMT0(name) $STRING($TRANSLIT(#name,">","/")) /* Standard Unix,
        with forward slashes. */
@#endif /* File-name format translations. */

/* \.{Machine-dependent}: The |SYS_PATH| macro is used for such things as
\.{sys/types.h} that have slashes in them. */
@#if IBMPC
    @m SYS_PATH(name) <$TRANSLIT(#name,"/","\\")>
@#else
    @m SYS_PATH(name) <#!name>
@#endif /* |IBMPC| */

@#endif