v15i072: dmake version 3.6 (part 20/25)
Dennis Vadura
dvadura at watdragon.waterloo.edu
Mon Oct 15 11:44:25 AEST 1990
Posting-number: Volume 15, Issue 72
Submitted-by: Dennis Vadura <dvadura at watdragon.waterloo.edu>
Archive-name: dmake-3.6/part20
#!/bin/sh
# this is part 20 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file infer.c continued
#
CurArch=20
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
exit 1; fi
( read Scheck
if test "$Scheck" != $CurArch
then echo "Please unpack part $Scheck next!"
exit 1;
else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file infer.c"
sed 's/^X//' << 'SHAR_EOF' >> infer.c
X * and we should Define it and attach it to the CELL pointed at
X * by cp. This recursive inference is performed only if
X * Transitive closure is enabled.
X */
X if( _trans ) {
X int _save = _dmax;
X if( !_dmax ) _dmax += _dmax_fix;
X infcell = Infer_recipe( &iprq, iprq.CE_HOW, &top_dfa_stack,
X sdir);
X _dmax = _save;
X
X if( infcell != NIL(CELL) ) {
X /* We found we can make the prerequisite, so make it into
X * a real node. This means, mark it for possible
X * removal, and when you make it into a node make sure
X * you don't clobber the Def_cell name.
X */
X infcell = Def_cell( iprqh.ht_name, setdirroot );
X thp = infcell->ce_name;
X *infcell = iprq;
X infcell->ce_name = thp;
X infcell->ce_flag |= F_REMOVE;
X }
X }
X
X /* If we pushed a directory for the inferred prerequisite then
X * pop it.
X */
X if( ipush ) Pop_dir(FALSE);
X
Xtry_next_edge:
X FREE( iprqh.ht_name );
X }
X
X edge = edge->ed_next;
X }
X while( infcell == NIL(CELL) && edge != meta->CE_EDGES );
X
X
X /* If none of the previous edges were any good, and there was an
X * edge with no prerequsite, then use it.
X */
X if( infcell == NIL(CELL) )
X if( edge_noprq != NIL(EDGE) )
X pedge = edge_noprq;
X else
X pedge = NIL(EDGE);
X else {
X /* We have a match, so make the edge's pointer for the corresponding
X * %-meta target point at the matched prerequisite so that the next
X * time we perform an inference we will check this edge first.
X */
X meta->CE_EDGES = pedge;
X if( !_trans ) infcell->ce_attr |= A_NOINFER;
X }
X
X
X /* If we pushed a dir when we treated this %-meta, then
X * pop it.
X */
X if( push ) Pop_dir(FALSE);
X
X
X /* Need this so that pdfa does not get advanced, and remains pointing
X * to the dfa, that just resulted in a successful match.
X */
X if( pedge != NIL(EDGE) ) break;
X }
X
X
X /* If pedge is not NIL then we have found an edge and possibly inferred
X * a prerequisite. In any case we should definitely attach the recipe to
X * the HOW node of the cell pointed at by cp. If the CELL has no HOW node
X * the we allocate one.
X */
X if( pedge != NIL(EDGE) ) {
X LINKPTR lp;
X HOWPTR nhow, ihow;
X
X DB_PRINT("inf", ("taking edge [%s] to [%s]", pedge->ed_tg->CE_NAME,
X (pedge->ed_prq == NIL(CELL)) ? "(none)":pedge->ed_prq->CE_NAME));
X
X if( Verbose )
X printf("%s: Inferred recipe using edge from [%s] to [%s]\n",
X Pname, pedge->ed_tg->CE_NAME,
X (pedge->ed_prq == NIL(CELL)) ? "(none)":pedge->ed_prq->CE_NAME);
X
X if( how == NIL(HOW) ) {
X /* Get a new HOW node, this should happen only for inferred
X * cells, as such they have no prior HOW node */
X TALLOC( how, 1, HOW );
X cp->CE_HOW = how;
X }
X
X
X /* Attach the recipe to the HOW node. Note that if the %-meta recipe
X * is a :: recipe then we will attach all of the HOW cells belonging to
X * the %-meta :: rule that we matched to the CELL, and we will place
X * them so that they preceed subsequent HOW cells in the list. Under
X * these circumstances the CELL is marked as a MULTI cell.
X */
X nhow = how->hw_next;
X for( ihow=meta->CE_EDGES->ed_how; ihow != NIL(HOW); ihow=ihow->hw_next ) {
X how->hw_per = pdfa->dl_per;
X how->hw_flag |= (ihow->hw_flag & (F_SINGLE | F_GROUP)) | F_INFER;
X how->hw_attr |= (ihow->hw_attr & A_TRANSFER);
X how->hw_recipe = ihow->hw_recipe;
X
X /* Add global prerequisites to the first HOW cell
X */
X for( lp=ihow->hw_indprq; lp != NIL(LINK); lp=lp->cl_next ) {
X char *name = lp->cl_prq->CE_NAME;
X CELLPTR tcp;
X
X name = _build_name( cp->CE_NAME, name, pdfa->dl_per );
X tcp = Def_cell( name, setdirroot );
X tcp->ce_flag |= F_REMOVE;
X Add_prerequisite( how, tcp, FALSE );
X
X if( Verbose )
X printf( "%s: Inferred indirect prerequisite [%s]\n",
X Pname, name );
X FREE(name);
X }
X
X /* If infcell is not NIL then we have inferred a prerequisite, so
X * add it to the first HOW cell as well.
X */
X if( infcell != NIL(CELL) ) {
X (Add_prerequisite( how, infcell, FALSE))->cl_flag |= F_TARGET;
X
X if( Verbose )
X printf( "%s: Inferred prerequisite [%s]\n",
X Pname, infcell->CE_NAME );
X }
X
X /* If the recipe is a :: recipe then Insert a new HOW node after
X * the inferred recipe HOW node and prior to any previous
X * :: nodes.
X */
X if( ihow->hw_next != NIL(HOW) ) {
X cp->ce_flag |= F_MULTI;
X TALLOC( how->hw_next, 1, HOW );
X how = how->hw_next;
X }
X }
X how->hw_next = nhow;
X pdfa->dl_per = NIL(char); /* We used it, so don't FREE it */
X
X /* Make sure to set the FLAGS, and ATTRIBUTES of the CELL so that it
X * gets made correctly.
X */
X cp->ce_flag |= F_RULES | F_TARGET | F_INFER;
X
X if( !(cp->ce_attr & A_SETDIR) ) {
X cp->ce_attr |= (meta->ce_attr & A_SETDIR);
X cp->ce_dir = meta->ce_dir;
X }
X }
X else
X cp = NIL(CELL);
X
X _free_dfas( dfas );
X
X DB_PRINT( "mem", ("%s:-< mem %ld", (cp!=NIL(CELL)) ? cp->CE_NAME : "(none)",
X (long)coreleft()));
X DB_PRINT( "inf", ("<<< Exit, cp = %04x", cp) );
X DB_RETURN( cp );
X}
X
X
Xstatic char *
X_build_name( tg, meta, per )
Xchar *tg;
Xchar *meta;
Xchar *per;
X{
X char *name;
X
X name = Apply_edit( meta, "%", per, FALSE, FALSE );
X if( strchr(name, '$') ) {
X HASHPTR m_at;
X char *tmp;
X
X m_at = Def_macro( "@", tg, M_MULTI );
X tmp = Expand( name );
X
X if( m_at->ht_value != NIL(char) ) {
X FREE( m_at->ht_value );
X m_at->ht_value = NIL(char);
X }
X
X if( name != meta ) FREE( name );
X name = tmp;
X }
X else if( name == meta )
X name = _strdup( name );
X
X return(name);
X}
X
X
Xstatic DFALINKPTR
X_dfa_subset( pdfa, stack )/*
X============================
X This is the valid DFA subset computation. Whenever a CELL has a Match_dfa
X subset computed this algorithm is run to see if any of the previously
X computed sets on the DFA stack are proper subsets of the new set. If they
X are, then any elements of the matching subset whose Prep counts exceed
X the allowed maximum given by Prep are removed from the computed DFA set,
X and hence from consideration, thereby cutting off the cycle in the
X inference graph. */
XDFALINKPTR pdfa;
Xregister DFASETPTR stack;
X{
X register DFALINKPTR element;
X DFALINKPTR nelement;
X
X DB_ENTER( "_dfa_subset" );
X
X for(; pdfa != NIL(DFALINK) && stack != NIL(DFASET); stack = stack->df_next) {
X int subset = TRUE;
X
X for( element=stack->df_set; subset && element != NIL(DFALINK);
X element=element->dl_next ) {
X register DFALINKPTR subel;
X
X for( subel = pdfa;
X subel != NIL(DFALINK) && (subel->dl_meta != element->dl_meta);
X subel = subel->dl_next );
X
X if( subset = (subel != NIL(DFALINK)) ) element->dl_member = subel;
X }
X
X if( subset )
X for( element=stack->df_set; element != NIL(DFALINK);
X element=element->dl_next ) {
X DFALINKPTR mem = element->dl_member;
X int npr = element->dl_prep + 1;
X
X if( npr > _prep )
X mem->dl_delete++;
X else
X mem->dl_prep = npr;
X }
X }
X
X for( element = pdfa; element != NIL(DFALINK); element = nelement ) {
X nelement = element->dl_next;
X
X if( element->dl_delete ) {
X /* A member of the subset has a PREP count equal to PREP, so
X * it should not be considered further in the inference, hence
X * we remove it from the doubly linked set list */
X if( element == pdfa )
X pdfa = element->dl_next;
X else
X element->dl_prev->dl_next = element->dl_next;
X
X if( element->dl_next != NIL(DFALINK) )
X element->dl_next->dl_prev = element->dl_prev;
X
X DB_PRINT("inf", ("deleting dfa [%s]", element->dl_meta->CE_NAME));
X FREE( element->dl_per );
X FREE( element );
X }
X }
X
X DB_RETURN( pdfa );
X}
X
X
X
Xstatic void
X_free_dfas( chain )/*
X=====================
X Free the list of DFA's constructed by Match_dfa, and linked together by
X LINK cells. FREE the % value as well, as long as it isn't NIL. */
XDFALINKPTR chain;
X{
X register DFALINKPTR tl;
X
X DB_ENTER( "_free_dfas" );
X
X for( tl=chain; tl != NIL(DFALINK); chain = tl ) {
X tl = tl->dl_next;
X
X DB_PRINT( "inf", ("Freeing DFA [%s], %% = [%s]", chain->dl_meta->CE_NAME,
X chain->dl_per) );
X
X if( chain->dl_per != NIL(char) ) FREE( chain->dl_per );
X FREE( chain );
X }
X
X DB_VOID_RETURN;
X}
X
X
Xstatic int
X_count_dots( name )/*
X=====================*/
Xchar *name;
X{
X register char *p;
X register int i = 0;
X
X for( p = name; *p; p++ ) if(*p == '.') i++;
X
X return( i );
X}
SHAR_EOF
echo "File infer.c is complete"
chmod 0440 infer.c || echo "restore of infer.c fails"
echo "x - extracting imacs.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > imacs.c &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/imacs.c,v 1.1 90/10/06 12:03:48 dvadura Exp $
X-- SYNOPSIS -- define default internal macros.
X--
X-- DESCRIPTION
X-- This file adds to the internal macro tables the set of default
X-- internal macros, and for those that are accessible internally via
X-- variables creates these variables, and initializes them to point
X-- at the default values of these macros.
X--
X-- AUTHOR
X-- Dennis Vadura, dvadura at watdragon.uwaterloo.ca
X-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
X--
X-- This program is free software; you can redistribute it and/or
X-- modify it under the terms of the GNU General Public License
X-- (version 1), as published by the Free Software Foundation, and
X-- found in the file 'LICENSE' included with this distribution.
X--
X-- This program is distributed in the hope that it will be useful,
X-- but WITHOUT ANY WARRANTY; without even the implied warrant of
X-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X-- GNU General Public License for more details.
X--
X-- You should have received a copy of the GNU General Public License
X-- along with this program; if not, write to the Free Software
X-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X-- $Log: imacs.c,v $
X * Revision 1.1 90/10/06 12:03:48 dvadura
X * dmake Release, Version 3.6
X *
X*/
X
X#include "extern.h"
X
Xstatic void _set_int_var ANSI((char *, char *, int, int *));
Xstatic void _set_string_var ANSI((char *, char *, int, char **));
Xstatic void _set_bit_var ANSI((char *, char *, int));
X
X/*
X** Arrange to parse the strings stored in Rules[]
X*/
Xvoid
XMake_rules()
X{
X Parse(NIL(FILE));
X}
X
X
X#define M_FLAG M_DEFAULT | M_EXPANDED
X
X/*
X** Add to the macro table all of the internal macro variables plus
X** create secondary variables which will give access to their values
X** easily, both when needed and when the macro value is modified.
X** The latter is accomplished by providing a flag in the macro and a field
X** which gives a pointer to the value if it is a char or string macro value
X** and a mask representing the bit of the global flag register that is affected
X** by this macro's value.
X*/
Xvoid
XCreate_macro_vars()
X{
X static char* switchar;
X char swchar[2];
X
X swchar[0] = Get_switch_char(), swchar[1] = '\0';
X _set_string_var("SWITCHAR", swchar, M_PRECIOUS, &switchar);
X _set_string_var("DIRSEPSTR", "/", M_PRECIOUS, &DirSepStr);
X _set_string_var("DIRBRKSTR", DirBrkStr, M_PRECIOUS, &DirBrkStr);
X
X _set_bit_var(".SILENT", "", A_SILENT );
X _set_bit_var(".IGNORE", "", A_IGNORE );
X _set_bit_var(".PRECIOUS", "", A_PRECIOUS);
X _set_bit_var(".EPILOG", "", A_EPILOG );
X _set_bit_var(".PROLOG", "", A_PROLOG );
X _set_bit_var(".NOINFER", "", A_NOINFER );
X _set_bit_var(".SEQUENTIAL","",A_SEQ );
X _set_bit_var(".USESHELL", "", A_SHELL );
X _set_bit_var(".SWAP", "", A_SWAP );
X _set_bit_var(".MKSARGS", "", A_MKSARGS );
X
X Glob_attr = A_DEFAULT; /* set all flags to NULL */
X
X _set_string_var("SHELL", "", M_DEFAULT, &Shell );
X _set_string_var("SHELLFLAGS", " ", M_DEFAULT, &Shell_flags );
X _set_string_var("GROUPSHELL", "", M_DEFAULT, &GShell );
X _set_string_var("GROUPFLAGS", " ", M_DEFAULT, &GShell_flags);
X _set_string_var("SHELLMETAS", "", M_DEFAULT, &Shell_metas );
X _set_string_var("GROUPSUFFIX", "", M_DEFAULT, &Grp_suff );
X _set_string_var("PREP", "0", M_DEFAULT, &Prep );
X _set_string_var("AUGMAKE",NIL(char), M_DEFAULT, &Augmake );
X
X _set_string_var("MAKEDIR", Get_current_dir(), M_PRECIOUS|M_NOEXPORT,
X &Makedir);
X _set_string_var("PWD", Makedir, M_DEFAULT|M_NOEXPORT, &Pwd);
X
X Def_macro("NULL", "", M_PRECIOUS|M_NOEXPORT|M_FLAG);
X
X _set_int_var( "MAXLINELENGTH", "0", M_DEFAULT|M_NOEXPORT, &Buffer_size );
X (void) Def_macro("MAXLINELENGTH", "0", M_FLAG | M_DEFAULT);
X
X /* set MAXPROCESSLIMIT high initially so that it allows MAXPROCESS to
X * change from command line. */
X _set_int_var( "MAXPROCESSLIMIT", "100", M_DEFAULT|M_NOEXPORT, &Max_proclmt );
X _set_int_var( "MAXPROCESS", "1", M_DEFAULT|M_NOEXPORT, &Max_proc );
X}
X
X/*
X** Define a string variable value, and set up the macro.
X*/
Xstatic void
X_set_int_var(name, val, flag, var)
Xchar *name;
Xchar *val;
Xint flag;
Xint *var;
X{
X HASHPTR hp;
X
X hp = Def_macro(name, val, M_FLAG | flag);
X hp->ht_flag |= M_VAR_INT | M_MULTI;
X hp->MV_IVAR = var;
X *var = atoi(val);
X}
X
X/*
X** Define a string variables value, and set up the macro.
X*/
Xstatic void
X_set_string_var(name, val, flag, var)
Xchar *name;
Xchar *val;
Xint flag;
Xchar **var;
X{
X HASHPTR hp;
X
X hp = Def_macro(name, val, M_FLAG | flag);
X hp->ht_flag |= M_VAR_STRING | M_MULTI;
X hp->MV_SVAR = var;
X *var = hp->ht_value;
X}
X
X/*
X** Define a string variables value, and set up the macro.
X*/
Xstatic void
X_set_bit_var(name, val, mask)
Xchar *name;
Xchar *val;
Xint mask;
X{
X HASHPTR hp;
X
X hp = Def_macro(name, val, M_FLAG);
X hp->ht_flag |= M_VAR_BIT | M_MULTI;
X hp->MV_MASK = mask;
X hp->MV_BVAR = &Glob_attr;
X}
SHAR_EOF
chmod 0440 imacs.c || echo "restore of imacs.c fails"
echo "x - extracting hash.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > hash.c &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/hash.c,v 1.1 90/10/06 12:03:45 dvadura Exp $
X-- SYNOPSIS -- hashing function for hash tables.
X--
X-- DESCRIPTION
X-- Hash an identifier. The hashing function works by computing the sum
X-- of each char and the previous hash value multiplied by 129. Finally the
X-- length of the identifier is added in. This way the hash depends on the
X-- chars as well as the length, and appears to be sufficiently unique,
X-- and is FAST to COMPUTE, unlike the previous hash function...
X--
X-- AUTHOR
X-- Dennis Vadura, dvadura at watdragon.uwaterloo.ca
X-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
X--
X-- This program is free software; you can redistribute it and/or
X-- modify it under the terms of the GNU General Public License
X-- (version 1), as published by the Free Software Foundation, and
X-- found in the file 'LICENSE' included with this distribution.
X--
X-- This program is distributed in the hope that it will be useful,
X-- but WITHOUT ANY WARRANTY; without even the implied warrant of
X-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X-- GNU General Public License for more details.
X--
X-- You should have received a copy of the GNU General Public License
X-- along with this program; if not, write to the Free Software
X-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X-- $Log: hash.c,v $
X * Revision 1.1 90/10/06 12:03:45 dvadura
X * dmake Release, Version 3.6
X *
X*/
X
X#include "extern.h"
X
Xuint16
XHash( id, phv )/*
X=================
X This function computes the identifier's hash value and returns the hash
X value modulo the key size as well as the full hash value. The reason
X for returning both is so that hash table searches can be sped up. You
X compare hash keys instead and compare strings only for those whose 32-bit
X hash keys match. (not many) */
X
Xchar *id;
Xuint32 *phv;
X{
X register char *p = id;
X register uint32 hash = (uint32) 0;
X
X while( *p ) hash = (hash << 7) + hash + (uint32) (*p++);
X *phv = hash = hash + (uint32) (p-id);
X
X return( (uint16) (hash % HASH_TABLE_SIZE) );
X}
X
SHAR_EOF
chmod 0440 hash.c || echo "restore of hash.c fails"
echo "x - extracting getinp.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > getinp.c &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/getinp.c,v 1.1 90/10/06 12:03:43 dvadura Exp $
X-- SYNOPSIS -- handle reading of input.
X--
X-- DESCRIPTION
X-- The code in this file reads the input from the specified stream
X-- into the provided buffer of size Buffer_size. In doing so it deletes
X-- comments. Comments are delimited by the #, and
X-- <nl> character sequences. An exception is \# which
X-- is replaced by # in the input. Line continuations are signalled
X-- at the end of a line and are recognized inside comments.
X-- The line continuation is always <\><nl>.
X--
X-- If the file to read is NIL(FILE) then the Get_line routine returns the
X-- next rule from the builtin rule table if there is one.
X--
X-- AUTHOR
X-- Dennis Vadura, dvadura at watdragon.uwaterloo.ca
X-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
X--
X-- This program is free software; you can redistribute it and/or
X-- modify it under the terms of the GNU General Public License
X-- (version 1), as published by the Free Software Foundation, and
X-- found in the file 'LICENSE' included with this distribution.
X--
X-- This program is distributed in the hope that it will be useful,
X-- but WITHOUT ANY WARRANTY; without even the implied warrant of
X-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X-- GNU General Public License for more details.
X--
X-- You should have received a copy of the GNU General Public License
X-- along with this program; if not, write to the Free Software
X-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X-- $Log: getinp.c,v $
X * Revision 1.1 90/10/06 12:03:43 dvadura
X * dmake Release, Version 3.6
X *
X*/
X
X#include "extern.h"
X#include "alloc.h"
X#include "db.h"
X
X#define IS_WHITE(A) ((A == ' ') || (A == '\t') || (A == '\n'))
X#define SCAN_WHITE(A) \
X while( IS_WHITE(*A) ) A++;
X
Xstatic int _is_conditional ANSI((char*));
Xstatic int _handle_conditional ANSI((int, TKSTRPTR));
X
Xstatic int rule_ind = 0; /* index of rule when reading Rule_tab */
Xstatic int skip = FALSE; /* if true the skip input */
X
X
Xint
XGet_line( buf, fil )/*
X======================
X Read a line of input from the file stripping
X off comments. The routine returns TRUE if EOF */
Xchar *buf;
XFILE *fil;
X{
X extern char **Rule_tab;
X register char *p;
X register char *q;
X register char *c;
X char *buf_org;
X static int ignore = FALSE;
X int cont = FALSE;
X int pos = 0;
X int res;
X
X DB_ENTER( "Get_line" );
X
X if( fil == NIL(FILE) ) {
X /* Reading the internal rule table. Set the rule_index to zero.
X * This way ReadEnvironment works as expected every time. */
X
X while( (p = Rule_tab[ rule_ind++ ]) != NIL(char) )
X /* The last test in this if '*p != '~', handles the environment
X * passing conventions used by MKS to pass arguments. We want to
X * skip those environment entries. */
X if( !Readenv || (Readenv && (strchr(p,'=') != NIL(char)) && *p!='~')){
X strcpy( buf, p );
X
X DB_PRINT( "io", ("Returning [%s]", buf) );
X DB_RETURN( FALSE );
X }
X
X rule_ind = 0;
X
X DB_PRINT( "io", ("Done Ruletab") );
X DB_RETURN( TRUE );
X }
X
X buf_org = buf;
X
Xdo_again:
X do {
X p = buf+pos;
X if(feof( fil ) || (fgets( p, Buffer_size-pos, fil ) == NIL(char)))
X DB_RETURN( TRUE );
X
X Line_number++;
X
X /* ignore input if ignore flag set and line ends in a continuation
X character. */
X
X q = p+strlen(p)-2;
X if( ignore ) {
X if( q[0] != CONTINUATION_CHAR || q[1] != '\n' ) ignore = FALSE;
X *p = '\0';
X continue;
X }
X
X /* Search the input string looking for comment chars. If it contains
X * comment chars then NUKE the remainder of the line, if the comment
X * char is preceeded by \ then shift the remainder of the line left
X * by one char. */
X
X c = p;
X
X while( (c = strchr(c, COMMENT_CHAR)) != NIL(char) ) {
X if( c != p && c[-1] == ESCAPE_CHAR ) {
X strcpy( c-1, c ); /* copy it left, due to \# */
X q--; /* shift tail pointer left */
X }
X else {
X *c = '\0'; /* a true comment so break */
X break;
X }
X }
X
X /* Does the end of the line end in a continuation sequence? */
X
X if( (q[0] == CONTINUATION_CHAR) && (q[1] == '\n')) {
X /* If the continuation was at the end of a comment then ignore the
X * next input line, (or lines until we get one ending in just <nl>)
X * else it's a continuation, so build the input line from several
X * text lines on input. The maximum size of this is governened by
X * Buffer_size */
X if( q != p && q[-1] == CONTINUATION_CHAR ) {
X strcpy( q, q+1 );
X q--;
X cont = FALSE;
X }
X else if( c != NIL(char) )
X ignore = TRUE;
X else
X cont = TRUE;
X }
X else {
X cont = FALSE;
X }
X
X q = ( c == NIL(char) ) ? q+2 : c;
X pos += q-p;
X }
X while( (cont || !*buf) && (pos <= Buffer_size) );
X
X if( buf[ pos-1 ] == '\n' )
X buf[ --pos ] = '\0';
X else
X if( pos == Buffer_size-1 )
X Fatal( "Input line too long, increase MAXLINELENGTH" );
X
X
X /* Now that we have the next line of input to make, we should check to
X * see if it is a conditional expression. If it is then process it,
X * otherwise pass it on to the parser. */
X
X if( *(p = _strspn(buf, " \t")) == CONDSTART ) {
X TKSTR token;
X
X SET_TOKEN( &token, p );
X
X p = Get_token( &token, "", FALSE );
X
X if( (res = _is_conditional( p )) ) /* ignore non control special */
X { /* targets */
X res = _handle_conditional( res, &token );
X skip = TRUE;
X }
X else {
X CLEAR_TOKEN( &token );
X res = TRUE;
X }
X }
X
X if( skip ) {
X buf = buf_org; /* ignore line just read in */
X pos = 0;
X skip = res;
X goto do_again;
X }
X
X DB_PRINT( "io", ("Returning [%s]", buf) );
X DB_RETURN( FALSE );
X}
X
X
X
Xchar *
XGet_token( string, brk, anchor )/*
X==================================
X Return the next token in string.
X Returns empty string when no more tokens in string.
X brk is a list of chars that also cause breaks in addition to space and
X tab, but are themselves returned as tokens. if brk is NULL then the
X remainder of the line is returned as a single token.
X
X anchor if TRUE, says break on chars in the brk list, but only if
X the entire token begins with the first char of the brk list, if
X FALSE then any char of brk will cause a break to occurr. */
X
XTKSTRPTR string;
Xchar *brk;
Xint anchor;
X{
X register char *s;
X register char *curp;
X register char *t;
X int done = FALSE;
X char space[10];
X
X DB_ENTER( "Get_token" );
X
X s = string->tk_str; /* Get string parameters */
X *s = string->tk_cchar; /* ... and strip leading w/s */
X
X SCAN_WHITE( s );
X
X DB_PRINT( "tok", ("What's left [%s]", s) );
X
X if( !*s ) {
X DB_PRINT( "tok", ("Returning NULL token") );
X DB_RETURN( "" );
X }
X
X
X /* Build the space list. space contains all those chars that may possibly
X * cause breaks. This includes the brk list as well as white space. */
X
X if( brk != NIL(char) ) {
X strcpy( space, " \t\n" );
X strcat( space, brk );
X }
X else {
X space[0] = 0xff; /* a char we know will not show up */
X space[1] = 0;
X }
X
X
X /* Handle processing of quoted tokens. Note that this is disabled if
X * brk is equal to NIL */
X
X while( *s == '\"' && ((brk != NIL(char)) || !string->tk_quote) ) {
X s++;
X if( string->tk_quote ) {
X curp = s-1;
X do { curp = strchr( curp+1, '\"' ); }
X while( (curp != NIL(char)) && (*(curp+1) == '\"'));
X
X if( curp == NIL(char) ) Fatal( "Unmatched quote in token" );
X string->tk_quote = !string->tk_quote;
X
X /* Check for "" case, and if found ignore it */
X if( curp == s ) continue;
X goto found_token;
X }
X else
X SCAN_WHITE( s );
X
X string->tk_quote = !string->tk_quote;
X }
X
X
X /* Check for a token break character at the beginning of the token.
X * If found return the next set of break chars as a token. */
X
X if( (brk != NIL(char)) && (strchr( brk, *s ) != NIL(char)) ) {
X curp = _strspn( s, brk );
X done = (anchor == 0) ? TRUE :
X ((anchor == 1)?(*s == *brk) : (*brk == curp[-1]));
X }
X
X
X /* Scan for the next token in the list and return it less the break char
X * that was used to terminate the token. It will possibly be returned in
X * the next call to Get_token */
X
X if( !done ) {
X SCAN_WHITE( s );
X
X t = s;
X do {
X done = TRUE;
X curp = _strpbrk(t, space);
X
X if( anchor && *curp && !IS_WHITE( *curp ) )
X if( ((anchor == 1)?*curp:_strspn(curp,brk)[-1]) != *brk ) {
X t++;
X done = FALSE;
X }
X }
X while( !done );
X
X if( (curp == s) && (strchr(brk, *curp) != NIL(char)) ) curp++;
X }
X
Xfound_token:
X string->tk_str = curp;
X string->tk_cchar = *curp;
X *curp = '\0';
X
X DB_PRINT( "tok", ("Returning [%s]", s) );
X DB_RETURN( s );
X}
X
X
X
Xstatic int
X_is_conditional( tg )/*
X=======================
X Look at tg and return it's value if it is a conditional identifier
X otherwise return 0. */
Xchar *tg;
X{
X DB_ENTER( "_is_conditional" );
X
X tg++;
X switch( *tg ) {
X case 'I': if( !strcmp( tg, "IF" )) DB_RETURN( ST_IF ); break;
X
X case 'E':
X if( !strcmp( tg, "END" )) DB_RETURN( ST_END );
X else if( !strcmp( tg, "ELSE" )) DB_RETURN( ST_ELSE );
X break;
X }
X
X DB_RETURN( 0 );
X}
X
X
X
Xstatic int
X_handle_conditional( opcode, tg )/*
X===================================
X Perform the necessary processing for .IF conditinal targets.
X Someday this should be modified to do bracketted expressions ala
X CPP... sigh */
Xint opcode;
XTKSTRPTR tg;
X{
X static short action[MAX_COND_DEPTH];
X char *tok, *lhs, *rhs, *op, *expr;
X int result;
X
X DB_ENTER( "_handle_conditional" );
X
X switch( opcode ) {
X case ST_IF:
X if( Nest_level+1 == MAX_COND_DEPTH )
X Fatal( ".IF .ELSE ... .END nesting too deep" );
X
X If_expand = TRUE;
X expr = Expand( Get_token( tg, NIL(char), FALSE ));
X If_expand = FALSE;
X lhs = _strspn( expr, " \t" );
X if( !*lhs ) lhs = NIL(char);
X
X if( (op = _strstr( lhs, "==" )) == NIL(char) )
X op = _strstr( lhs, "!=" );
X
X if( op == NIL(char) )
X result = (lhs != NIL(char));
X else {
X op[1] = op[0];
X if( lhs != op ) {
X for( tok = op-1; (tok != lhs) && ((*tok == ' ')||(*tok == '\t'));
X tok-- );
X tok[1] = '\0';
X }
X else
X lhs = NIL(char);
X
X op++;
X rhs = _strspn( op+1, " \t" );
X if( !*rhs ) rhs = NIL(char);
X
X if( (rhs == NIL(char)) || (lhs == NIL(char)) )
X result = (rhs == lhs) ? TRUE : FALSE;
X else {
X tok = rhs + strlen( rhs );
X for( tok=tok-1; (tok != lhs) && ((*tok == ' ')||(*tok == '\t'));
X tok--);
X tok[1] = '\0';
X
X result = (strcmp( lhs, rhs ) == 0) ? TRUE : FALSE;
X }
X
X if( *op == '!' ) result = !result;
X }
X
X if( expr != NIL(char) ) FREE( expr );
X Nest_level++;
X
X if( result )
X action[ Nest_level ] = action[ Nest_level-1 ];
X else
X action[ Nest_level ] = 1;
X break;
X
X case ST_ELSE:
X if( Nest_level <= 0 ) Fatal( ".ELSE without .IF" );
X if( action[ Nest_level-1 ] != 1 )
X action[ Nest_level ] ^= 0x1; /* flip between 0 and 1 */
X break;
X
X case ST_END:
X Nest_level--;
X if( Nest_level < 0 ) Fatal( "Unmatched .END" );
X break;
X }
X
X DB_RETURN( action[ Nest_level ] );
X}
X
SHAR_EOF
chmod 0440 getinp.c || echo "restore of getinp.c fails"
echo "x - extracting function.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > function.c &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/function.c,v 1.1 90/10/06 12:04:36 dvadura Exp $
X-- SYNOPSIS -- GNU style functions for dmake.
X--
X-- DESCRIPTION
X-- All GNU stule functions understood by dmake are implemented in this
X-- file. Currently the only such function is $(mktmp ...) which is
X-- not part of GNU-make is an extension provided by dmake.
X--
X-- AUTHOR
X-- Dennis Vadura, dvadura at watdragon.uwaterloo.ca
X-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
X--
X-- This program is free software; you can redistribute it and/or
X-- modify it under the terms of the GNU General Public License
X-- (version 1), as published by the Free Software Foundation, and
X-- found in the file 'LICENSE' included with this distribution.
X--
X-- This program is distributed in the hope that it will be useful,
X-- but WITHOUT ANY WARRANTY; without even the implied warrant of
X-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X-- GNU General Public License for more details.
X--
X-- You should have received a copy of the GNU General Public License
X-- along with this program; if not, write to the Free Software
X-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X-- $Log: function.c,v $
X * Revision 1.1 90/10/06 12:04:36 dvadura
X * dmake Release, Version 3.6
X *
X*/
X
X#include "extern.h"
X#include "alloc.h"
X
Xstatic char *_exec_mktmp ANSI((char *, char *));
X
X
Xchar *
XExec_function(buf)/*
X====================
X Execute the function given by the value of args.
X
X So far mktmp is the only valid function, anything else elicits and error
X message. It is my hope to support the GNU style functions in this portion
X of the code at some time in the future. */
Xchar *buf;
X{
X char *fname;
X char *args = NIL(char);
X char *mod = NIL(char);
X char *res = NIL(char);
X
X /* This must succeed since the presence of ' ', \t or \n is what
X * determines if this functions is called in the first place. */
X fname = _substr(buf, args=_strpbrk(buf," \t\n"));
X
X if( (mod = strchr(fname,',')) != NIL(char) ){
X *mod = '\0';
X mod++;
X }
X
X switch( *fname ) {
X case 'm':
X if( strncmp(fname,"mktmp", 5) == 0 ) res = _exec_mktmp(mod, args);
X break;
X }
X
X if( res == NIL(char) ) {
X Warning( "Function '%s' not implemented at this time", fname );
X res = _strdup("");
X }
X
X return(res);
X}
X
X
Xstatic char *
X_exec_mktmp( mod, data )
Xchar *mod;
Xchar *data;
X{
X register char *p;
X char *tmpname;
X FILE *tmpfile;
X char *name;
X
X tmpfile = Start_temp( "", Recipe_cell, Recipe_how, &tmpname );
X data = Expand(_strspn(data, " \t\n"));
X name = Recipe_cell ? Recipe_cell->CE_NAME:"makefile text";
X
X for(p=strchr(data,'\n'); p; p=strchr(p,'\n')) {
X char *q = _strspn(++p," \t");
X strcpy(p,q);
X }
X
X Append_line( data, FALSE, tmpfile, name, FALSE, TRUE );
X Close_temp( Recipe_how, tmpfile );
X FREE(data);
X
X return( (mod != NIL(char) && *mod) ? Expand(mod) : _strdup(tmpname) );
X}
SHAR_EOF
chmod 0440 function.c || echo "restore of function.c fails"
echo "x - extracting extern.h (Text)"
sed 's/^X//' << 'SHAR_EOF' > extern.h &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/extern.h,v 1.1 90/10/06 12:04:24 dvadura Exp $
X-- SYNOPSIS -- external declarations for dmake functions.
X--
X-- DESCRIPTION
X-- ANSI is a macro that allows the proper handling of ANSI style
X-- function declarations.
X--
X-- AUTHOR
X-- Dennis Vadura, dvadura at watdragon.uwaterloo.ca
X-- CS DEPT, University of Waterloo, Waterloo, Ont., Canada
X--
X-- COPYRIGHT
X-- Copyright (c) 1990 by Dennis Vadura. All rights reserved.
X--
X-- This program is free software; you can redistribute it and/or
X-- modify it under the terms of the GNU General Public License
X-- (version 1), as published by the Free Software Foundation, and
X-- found in the file 'LICENSE' included with this distribution.
X--
X-- This program is distributed in the hope that it will be useful,
X-- but WITHOUT ANY WARRANTY; without even the implied warrant of
X-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X-- GNU General Public License for more details.
X--
X-- You should have received a copy of the GNU General Public License
X-- along with this program; if not, write to the Free Software
X-- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X--
X-- LOG
X-- $Log: extern.h,v $
X * Revision 1.1 90/10/06 12:04:24 dvadura
X * dmake Release, Version 3.6
X *
X*/
X
X#ifndef EXTERN_h
X#define EXTERN_h
X
X#include "vextern.h"
X#include <stdlib.h>
X#include <string.h>
X
Xextern void Add_dfa ANSI((char *));
Xextern void Add_fringe ANSI((CELLPTR));
Xextern void Add_recipe_to_list ANSI((char *, int, int));
Xextern LINKPTR Add_prerequisite ANSI((HOWPTR, CELLPTR, int));
Xextern char* Apply_edit ANSI((char *, char *, char *, int, int));
Xextern void Append_line ANSI((char*, int, FILE*, char*, int, int));
Xextern char* basename ANSI((char*));
Xextern void Bind_rules_to_targets ANSI((int));
Xextern char* Build_path ANSI((char *, char *));
Xextern void Catch_signals ANSI((void (*)()));
Xextern void Check_circle ANSI((LINKPTR));
Xextern void Check_circle_dfa ANSI(());
Xextern void Clear_prerequisites ANSI((HOWPTR));
Xextern void Clear_signals ANSI(());
Xextern void Clean_up_processes ANSI(());
Xextern FILE* Closefile ANSI(());
Xextern void Close_temp ANSI((HOWPTR, FILE *));
Xextern void Create_macro_vars ANSI(());
Xextern DFAPTR Construct_dfa ANSI((char *));
Xextern CELLPTR Def_cell ANSI((char *, CELLPTR));
Xextern HASHPTR Def_macro ANSI((char *, char *, int));
Xextern STRINGPTR Def_recipe ANSI((char *, STRINGPTR, int, int));
Xextern int Do_cmnd ANSI((char *, int, int, CELLPTR, HOWPTR, int,int,int));
Xextern time_t Do_stat ANSI((char *, char *, char **));
Xextern time_t Do_time ANSI(());
Xextern int Do_touch ANSI((char *, char *, char **));
Xextern void Dump ANSI(());
Xextern void Dump_recipe ANSI((STRINGPTR));
Xextern void Epilog ANSI((int));
Xextern char* Exec_function ANSI((char *));
Xextern char* Expand ANSI((char *));
Xextern CELLPTR Explode_cell ANSI((CELLPTR, CELLPTR));
Xextern HOWPTR Explode_how ANSI((HOWPTR, CELLPTR, int));
Xextern LINKPTR Explode_prq ANSI((LINKPTR, CELLPTR, int));
Xextern char* Filename ANSI(());
Xextern char* Get_current_dir ANSI(());
Xextern int Get_line ANSI((char *, FILE *));
Xextern HASHPTR Get_name ANSI((char *, HASHPTR *, int, CELLPTR));
Xextern char* Get_suffix ANSI((char *));
Xextern char Get_switch_char ANSI(());
Xextern char* Get_token ANSI((TKSTRPTR, char *, int));
Xextern uint16 Hash ANSI((char *,uint32 *));
Xextern void Handle_result ANSI((int, int, int, CELLPTR));
Xextern int If_root_path ANSI((char *));
Xextern CELLPTR Infer_recipe ANSI((CELLPTR, HOWPTR, DFASETPTR, CELLPTR));
Xextern int Macro_op ANSI((char *));
Xextern int Make ANSI((CELLPTR, HOWPTR, CELLPTR));
Xextern void Make_rules ANSI(());
Xextern void Map_esc ANSI((char *));
Xextern DFALINKPTR Match_dfa ANSI((char *));
Xextern char* My_malloc ANSI((unsigned int, char *, int));
Xextern char* My_calloc ANSI((unsigned int, unsigned int, char *, int));
Xextern void My_free ANSI((char *, char *, int));
Xextern void No_ram ANSI(());
Xextern FILE* Open_temp ANSI((char **, char *));
Xextern FILE* Openfile ANSI((char *, int));
Xextern char** Pack_argv ANSI((int, int, char *));
Xextern void Parse ANSI((FILE *));
Xextern int Parse_macro ANSI((char *, int));
Xextern int Parse_rule_def ANSI((int *));
Xextern void Pop_dir ANSI((int));
Xextern void Prolog ANSI((int, char **));
Xextern int Push_dir ANSI((CELLPTR, int));
Xextern void Quit ANSI(());
Xextern char* Read_env_string ANSI((char *));
Xextern void ReadEnvironment ANSI(());
Xextern void Remove_prq ANSI((CELLPTR));
Xextern int Rule_op ANSI((char *));
Xextern int runargv ANSI((CELLPTR, HOWPTR, int, int, int, int, char *));
Xextern time_t seek_arch ANSI((char*, char*));
Xextern int Set_dir ANSI((char *));
Xextern int Set_group_attributes ANSI((char *));
Xextern void Stat_target ANSI((CELLPTR, int));
Xextern FILE* Start_temp ANSI((char *, CELLPTR, HOWPTR, char **));
Xextern int Test_circle ANSI((CELLPTR, int));
Xextern int touch_arch ANSI((char*, char*));
Xextern void Unlink_temp_files ANSI((HOWPTR));
Xextern void Update_time_stamp ANSI((CELLPTR, HOWPTR));
Xextern void Void_lib_cache ANSI((char *, char *));
Xextern int Wait_for_child ANSI((int, int));
Xextern int Write_env_string ANSI((char *, char *));
X
Xextern char* _stradd ANSI((char *,char *, int));
Xextern char* _strapp ANSI((char *,char *));
Xextern char* _strjoin ANSI((char *,char *,int, int));
Xextern char* _strdup ANSI((char *));
Xextern char* _strpbrk ANSI((char *,char *));
Xextern char* _strspn ANSI((char *,char *));
Xextern char* _strstr ANSI((char *,char *));
Xextern char* _substr ANSI((char *,char *));
X
X/* Include this last as it invalidates some functions that are defined
X * externally above and turns them into no-ops. Have to do this after
X * the extern declarations however. */
X#include "config.h"
X
X#endif
X
SHAR_EOF
chmod 0440 extern.h || echo "restore of extern.h fails"
echo "x - extracting expand.c (Text)"
sed 's/^X//' << 'SHAR_EOF' > expand.c &&
X/* RCS -- $Header: /u2/dvadura/src/generic/dmake/src/RCS/expand.c,v 1.1 90/10/06 12:03:40 dvadura Exp $
X-- SYNOPSIS -- macro expansion code.
X--
X-- DESCRIPTION
X--
X-- This routine handles all the necessary junk that deals with macro
X-- expansion. It understands the following syntax. If a macro is
X-- not defined it expands to NULL, and {} are synonyms for ().
X--
X-- $$ - expands to $
X-- {{ - expands to {
X-- }} - expands to }
X-- $A - expands to whatever the macro A is defined as
X-- $(AA) - expands to whatever the macro AA is defined as
SHAR_EOF
echo "End of part 20"
echo "File expand.c is continued in part 21"
echo "21" > s2_seq_.tmp
exit 0
More information about the Comp.sources.misc
mailing list