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fb1dac11b4
A Path is now a TAILQ of PathElements each of which just points to a reference counted directory. Rename all functions dealing with Paths from the Dir_ prefix to a Path_ prefix.
2210 lines
55 KiB
C
2210 lines
55 KiB
C
/*-
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)suff.c 8.4 (Berkeley) 3/21/94
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*-
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* suff.c --
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* Functions to maintain suffix lists and find implicit dependents
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* using suffix transformation rules
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*
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* Interface:
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* Suff_Init Initialize all things to do with suffixes.
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*
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* Suff_DoPaths This function is used to make life easier
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* when searching for a file according to its
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* suffix. It takes the global search path,
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* as defined using the .PATH: target, and appends
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* its directories to the path of each of the
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* defined suffixes, as specified using
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* .PATH<suffix>: targets. In addition, all
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* directories given for suffixes labeled as
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* include files or libraries, using the .INCLUDES
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* or .LIBS targets, are played with using
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* Dir_MakeFlags to create the .INCLUDES and
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* .LIBS global variables.
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*
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* Suff_ClearSuffixes Clear out all the suffixes and defined
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* transformations.
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*
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* Suff_IsTransform Return TRUE if the passed string is the lhs
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* of a transformation rule.
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*
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* Suff_AddSuffix Add the passed string as another known suffix.
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*
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* Suff_GetPath Return the search path for the given suffix.
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*
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* Suff_AddInclude Mark the given suffix as denoting an include
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* file.
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*
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* Suff_AddLib Mark the given suffix as denoting a library.
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*
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* Suff_AddTransform Add another transformation to the suffix
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* graph. Returns GNode suitable for framing, I
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* mean, tacking commands, attributes, etc. on.
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*
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* Suff_SetNull Define the suffix to consider the suffix of
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* any file that doesn't have a known one.
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*
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* Suff_FindDeps Find implicit sources for and the location of
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* a target based on its suffix. Returns the
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* bottom-most node added to the graph or NULL
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* if the target had no implicit sources.
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*/
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#include <sys/queue.h>
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include "arch.h"
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#include "buf.h"
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#include "config.h"
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#include "dir.h"
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#include "globals.h"
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#include "GNode.h"
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#include "lst.h"
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#include "make.h"
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#include "parse.h"
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#include "str.h"
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#include "suff.h"
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#include "targ.h"
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#include "util.h"
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#include "var.h"
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/* Lst of suffixes */
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static Lst sufflist = Lst_Initializer(sufflist);
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/* Lst of suffixes to be cleaned */
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static Lst suffClean = Lst_Initializer(suffClean);
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/* Lst of sources */
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static Lst srclist = Lst_Initializer(srclist);
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/* Lst of transformation rules */
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static Lst transforms = Lst_Initializer(transforms);
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/* Counter for assigning suffix numbers */
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static int sNum = 0;
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/*
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* Structure describing an individual suffix.
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*/
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typedef struct Suff {
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char *name; /* The suffix itself */
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int nameLen; /* Length of the suffix */
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short flags; /* Type of suffix */
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#define SUFF_INCLUDE 0x01 /* One which is #include'd */
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#define SUFF_LIBRARY 0x02 /* One which contains a library */
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#define SUFF_NULL 0x04 /* The empty suffix */
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struct Path searchPath; /* Path for files with this suffix */
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int sNum; /* The suffix number */
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int refCount; /* Reference count of list membership */
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Lst parents; /* Suffixes we have a transformation to */
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Lst children; /* Suffixes we have a transformation from */
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Lst ref; /* List of lists this suffix is referenced */
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} Suff;
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/*
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* Structure used in the search for implied sources.
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*/
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typedef struct Src {
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char *file; /* The file to look for */
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char *pref; /* Prefix from which file was formed */
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Suff *suff; /* The suffix on the file */
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struct Src *parent; /* The Src for which this is a source */
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GNode *node; /* The node describing the file */
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int children; /* Count of existing children (so we don't free
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* this thing too early or never nuke it) */
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#ifdef DEBUG_SRC
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Lst cp; /* Debug; children list */
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#endif
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} Src;
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/* The NULL suffix for this run */
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static Suff *suffNull;
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/* The empty suffix required for POSIX single-suffix transformation rules */
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static Suff *emptySuff;
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static void SuffFindDeps(GNode *, Lst *);
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/*-
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*-----------------------------------------------------------------------
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* SuffSuffIsSuffix --
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* See if suff is a suffix of str.
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*
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* Results:
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* NULL if it ain't, pointer to character in str before suffix if
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* it is.
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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static char *
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SuffSuffIsSuffix(const Suff *s, char *str)
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{
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const char *p1; /* Pointer into suffix name */
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char *p2; /* Pointer into string being examined */
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size_t len;
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len = strlen(str);
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p1 = s->name + s->nameLen;
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p2 = str + len;
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while (p1 >= s->name && len > 0 && *p1 == *p2) {
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p1--;
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p2--;
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len--;
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}
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return (p1 == s->name - 1 ? p2 : NULL);
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}
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/*-
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*-----------------------------------------------------------------------
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* SuffSuffFind --
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* Find a suffix given its name.
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*
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* Results:
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* The suffix or NULL.
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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static Suff *
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SuffSuffFind(const char *s)
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{
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LstNode *ln;
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LST_FOREACH(ln, &sufflist) {
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if (strcmp(s, ((const Suff *)Lst_Datum(ln))->name) == 0)
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return (Lst_Datum(ln));
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}
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return (NULL);
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}
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/*-
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*-----------------------------------------------------------------------
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* SuffTransFind
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* Find a transform.
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*
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* Results:
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* transform or NULL.
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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static GNode *
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SuffTransFind(const char *name)
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{
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LstNode *ln;
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LST_FOREACH(ln, &transforms) {
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if (strcmp(name, ((const GNode *)Lst_Datum(ln))->name) == 0)
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return (Lst_Datum(ln));
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}
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return (NULL);
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}
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/*********** Maintenance Functions ************/
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#if 0
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/*
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* Keep this function for now until it is clear why a .SUFFIXES: doesn't
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* actually delete the suffixes but just puts them on the suffClean list.
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*/
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/*-
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*-----------------------------------------------------------------------
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* SuffFree --
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* Free up all memory associated with the given suffix structure.
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*
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* Results:
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* none
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*
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* Side Effects:
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* the suffix entry is detroyed
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*-----------------------------------------------------------------------
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*/
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static void
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SuffFree(void *sp)
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{
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Suff *s = sp;
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if (s == suffNull)
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suffNull = NULL;
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if (s == emptySuff)
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emptySuff = NULL;
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Lst_Destroy(&s->ref, NOFREE);
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Lst_Destroy(&s->children, NOFREE);
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Lst_Destroy(&s->parents, NOFREE);
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Lst_Destroy(&s->searchPath, Dir_Destroy);
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free(s->name);
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free(s);
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}
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#endif
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/*-
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*-----------------------------------------------------------------------
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* SuffRemove --
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* Remove the suffix into the list
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*
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* Results:
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* None
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*
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* Side Effects:
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* The reference count for the suffix is decremented
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*-----------------------------------------------------------------------
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*/
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static void
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SuffRemove(Lst *l, Suff *s)
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{
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LstNode *ln = Lst_Member(l, s);
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if (ln != NULL) {
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Lst_Remove(l, ln);
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s->refCount--;
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}
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}
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/*-
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*-----------------------------------------------------------------------
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* SuffInsert --
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* Insert the suffix into the list keeping the list ordered by suffix
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* numbers.
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*
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* Results:
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* None
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*
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* Side Effects:
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* The reference count of the suffix is incremented
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*-----------------------------------------------------------------------
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*/
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static void
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SuffInsert(Lst *l, Suff *s)
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{
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LstNode *ln; /* current element in l we're examining */
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Suff *s2; /* the suffix descriptor in this element */
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s2 = NULL;
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for (ln = Lst_First(l); ln != NULL; ln = Lst_Succ(ln)) {
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s2 = Lst_Datum(ln);
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if (s2->sNum >= s->sNum)
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break;
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}
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if (s2 == NULL) {
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DEBUGF(SUFF, ("inserting an empty list?..."));
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}
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DEBUGF(SUFF, ("inserting %s(%d)...", s->name, s->sNum));
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if (ln == NULL) {
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DEBUGF(SUFF, ("at end of list\n"));
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Lst_AtEnd(l, s);
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s->refCount++;
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Lst_AtEnd(&s->ref, l);
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} else if (s2->sNum != s->sNum) {
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DEBUGF(SUFF, ("before %s(%d)\n", s2->name, s2->sNum));
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Lst_Insert(l, ln, s);
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s->refCount++;
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Lst_AtEnd(&s->ref, l);
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} else {
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DEBUGF(SUFF, ("already there\n"));
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}
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}
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/*-
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*-----------------------------------------------------------------------
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* Suff_ClearSuffixes --
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* This is gross. Nuke the list of suffixes but keep all transformation
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* rules around. The transformation graph is destroyed in this process,
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* but we leave the list of rules so when a new graph is formed the rules
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* will remain.
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* This function is called from the parse module when a
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* .SUFFIXES:\n line is encountered.
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*
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* Results:
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* none
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*
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* Side Effects:
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* the sufflist and its graph nodes are destroyed
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*-----------------------------------------------------------------------
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*/
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void
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Suff_ClearSuffixes(void)
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{
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Lst_Concat(&suffClean, &sufflist, LST_CONCLINK);
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sNum = 1;
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suffNull = emptySuff;
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/*
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* Clear suffNull's children list (the other suffixes are built new, but
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* suffNull is used as is).
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* NOFREE is used because all suffixes are are on the suffClean list.
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* suffNull should not have parents.
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*/
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Lst_Destroy(&suffNull->children, NOFREE);
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}
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/*-
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*-----------------------------------------------------------------------
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* SuffParseTransform --
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* Parse a transformation string to find its two component suffixes.
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*
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* Results:
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* TRUE if the string is a valid transformation and FALSE otherwise.
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*
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* Side Effects:
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* The passed pointers are overwritten.
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*
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*-----------------------------------------------------------------------
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*/
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static Boolean
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SuffParseTransform(char *str, Suff **srcPtr, Suff **targPtr)
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{
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LstNode *srcLn; /* element in suffix list of trans source*/
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Suff *src; /* Source of transformation */
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char *str2; /* Extra pointer (maybe target suffix) */
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LstNode *singleLn; /* element in suffix list of any suffix
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* that exactly matches str */
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Suff *single = NULL; /* Source of possible transformation to
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* null suffix */
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singleLn = NULL;
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/*
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* Loop looking first for a suffix that matches the start of the
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* string and then for one that exactly matches the rest of it. If
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* we can find two that meet these criteria, we've successfully
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* parsed the string.
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*/
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srcLn = Lst_First(&sufflist);
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for (;;) {
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/* advance to next possible suffix */
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while (srcLn != NULL) {
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src = Lst_Datum(srcLn);
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if (strncmp(str, src->name, strlen(src->name)) == 0)
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break;
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srcLn = LST_NEXT(srcLn);
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}
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if (srcLn == NULL) {
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/*
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* Ran out of source suffixes -- no such rule
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*/
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if (singleLn != NULL) {
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/*
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* Not so fast Mr. Smith! There was a suffix
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* that encompassed the entire string, so we
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* assume it was a transformation to the null
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* suffix (thank you POSIX). We still prefer to
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* find a double rule over a singleton, hence we
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* leave this check until the end.
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*
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* XXX: Use emptySuff over suffNull?
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*/
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*srcPtr = single;
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*targPtr = suffNull;
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return (TRUE);
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}
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return (FALSE);
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}
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str2 = str + src->nameLen;
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if (*str2 == '\0') {
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single = src;
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singleLn = srcLn;
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} else {
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*targPtr = SuffSuffFind(str2);
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if (*targPtr != NULL) {
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*srcPtr = src;
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return (TRUE);
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}
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}
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/* next one */
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srcLn = LST_NEXT(srcLn);
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}
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}
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|
|
/*-
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*-----------------------------------------------------------------------
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* Suff_IsTransform --
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* Return TRUE if the given string is a transformation rule
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*
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*
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* Results:
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* TRUE if the string is a concatenation of two known suffixes.
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* FALSE otherwise
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*
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* Side Effects:
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|
* None
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|
*-----------------------------------------------------------------------
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|
*/
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Boolean
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Suff_IsTransform(char *str)
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{
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Suff *src, *targ;
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return (SuffParseTransform(str, &src, &targ));
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}
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|
|
/*-
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|
*-----------------------------------------------------------------------
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|
* Suff_AddTransform --
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* Add the transformation rule described by the line to the
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* list of rules and place the transformation itself in the graph
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|
*
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* Results:
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* The node created for the transformation in the transforms list
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*
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* Side Effects:
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* The node is placed on the end of the transforms Lst and links are
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* made between the two suffixes mentioned in the target name
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*-----------------------------------------------------------------------
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*/
|
|
GNode *
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Suff_AddTransform(char *line)
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|
{
|
|
GNode *gn; /* GNode of transformation rule */
|
|
Suff *s; /* source suffix */
|
|
Suff *t; /* target suffix */
|
|
|
|
gn = SuffTransFind(line);
|
|
if (gn == NULL) {
|
|
/*
|
|
* Make a new graph node for the transformation.
|
|
* It will be filled in by the Parse module.
|
|
*/
|
|
gn = Targ_NewGN(line);
|
|
Lst_AtEnd(&transforms, gn);
|
|
} else {
|
|
/*
|
|
* New specification for transformation rule. Just nuke the
|
|
* old list of commands so they can be filled in again...
|
|
* We don't actually free the commands themselves, because a
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|
* given command can be attached to several different
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|
* transformations.
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|
*/
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|
Lst_Destroy(&gn->commands, NOFREE);
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|
Lst_Destroy(&gn->children, NOFREE);
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|
}
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|
|
gn->type = OP_TRANSFORM;
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|
|
SuffParseTransform(line, &s, &t);
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|
|
/*
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|
* link the two together in the proper relationship and order
|
|
*/
|
|
DEBUGF(SUFF, ("defining transformation from `%s' to `%s'\n",
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s->name, t->name));
|
|
SuffInsert(&t->children, s);
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|
SuffInsert(&s->parents, t);
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|
|
return (gn);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_EndTransform --
|
|
* Handle the finish of a transformation definition, removing the
|
|
* transformation from the graph if it has neither commands nor
|
|
* sources. This is called from the Parse module at the end of
|
|
* a dependency block.
|
|
*
|
|
* Side Effects:
|
|
* If the node has no commands or children, the children and parents
|
|
* lists of the affected suffices are altered.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_EndTransform(const GNode *gn)
|
|
{
|
|
Suff *s, *t;
|
|
|
|
if (!Lst_IsEmpty(&gn->commands) || !Lst_IsEmpty(&gn->children)) {
|
|
DEBUGF(SUFF, ("transformation %s complete\n", gn->name));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* SuffParseTransform() may fail for special rules which are not
|
|
* actual transformation rules (e.g., .DEFAULT).
|
|
*/
|
|
if (!SuffParseTransform(gn->name, &s, &t))
|
|
return;
|
|
|
|
DEBUGF(SUFF, ("deleting transformation from `%s' to `%s'\n",
|
|
s->name, t->name));
|
|
|
|
/*
|
|
* Remove the source from the target's children list. We check
|
|
* for a NULL return to handle a beanhead saying something like
|
|
* .c.o .c.o:
|
|
*
|
|
* We'll be called twice when the next target is seen, but .c
|
|
* and .o are only linked once...
|
|
*/
|
|
SuffRemove(&t->children, s);
|
|
|
|
/*
|
|
* Remove the target from the source's parents list
|
|
*/
|
|
SuffRemove(&s->parents, t);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffRebuildGraph --
|
|
* Called from Suff_AddSuffix via LST_FOREACH to search through the
|
|
* list of existing transformation rules and rebuild the transformation
|
|
* graph when it has been destroyed by Suff_ClearSuffixes. If the
|
|
* given rule is a transformation involving this suffix and another,
|
|
* existing suffix, the proper relationship is established between
|
|
* the two.
|
|
*
|
|
* Side Effects:
|
|
* The appropriate links will be made between this suffix and
|
|
* others if transformation rules exist for it.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
SuffRebuildGraph(const GNode *transform, Suff *s)
|
|
{
|
|
char *cp;
|
|
Suff *s2 = NULL;
|
|
|
|
/*
|
|
* First see if it is a transformation from this suffix.
|
|
*/
|
|
if (strncmp(transform->name, s->name, strlen(s->name)) == 0) {
|
|
cp = transform->name + strlen(s->name);
|
|
|
|
if (cp[0] == '\0') /* null rule */
|
|
s2 = suffNull;
|
|
else
|
|
s2 = SuffSuffFind(cp);
|
|
if (s2 != NULL) {
|
|
/*
|
|
* Found target. Link in and return, since it can't be
|
|
* anything else.
|
|
*/
|
|
SuffInsert(&s2->children, s);
|
|
SuffInsert(&s->parents, s2);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Not from, maybe to?
|
|
*/
|
|
cp = SuffSuffIsSuffix(s, transform->name);
|
|
if (cp != NULL) {
|
|
/*
|
|
* Null-terminate the source suffix in order to find it.
|
|
*/
|
|
cp[1] = '\0';
|
|
s2 = SuffSuffFind(transform->name);
|
|
|
|
/*
|
|
* Replace the start of the target suffix
|
|
*/
|
|
cp[1] = s->name[0];
|
|
if (s2 != NULL) {
|
|
/*
|
|
* Found it -- establish the proper relationship
|
|
*/
|
|
SuffInsert(&s->children, s2);
|
|
SuffInsert(&s2->parents, s);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_AddSuffix --
|
|
* Add the suffix in string to the end of the list of known suffixes.
|
|
* Should we restructure the suffix graph? Make doesn't...
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* A GNode is created for the suffix and a Suff structure is created and
|
|
* added to the suffixes list unless the suffix was already known.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_AddSuffix(char *str)
|
|
{
|
|
Suff *s; /* new suffix descriptor */
|
|
LstNode *ln;
|
|
|
|
if (SuffSuffFind(str) != NULL)
|
|
/*
|
|
* Already known
|
|
*/
|
|
return;
|
|
|
|
s = emalloc(sizeof(Suff));
|
|
|
|
s->name = estrdup(str);
|
|
s->nameLen = strlen(s->name);
|
|
TAILQ_INIT(&s->searchPath);
|
|
Lst_Init(&s->children);
|
|
Lst_Init(&s->parents);
|
|
Lst_Init(&s->ref);
|
|
s->sNum = sNum++;
|
|
s->flags = 0;
|
|
s->refCount = 0;
|
|
|
|
Lst_AtEnd(&sufflist, s);
|
|
|
|
/*
|
|
* Look for any existing transformations from or to this suffix.
|
|
* XXX: Only do this after a Suff_ClearSuffixes?
|
|
*/
|
|
LST_FOREACH(ln, &transforms)
|
|
SuffRebuildGraph(Lst_Datum(ln), s);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_GetPath --
|
|
* Return the search path for the given suffix, if it's defined.
|
|
*
|
|
* Results:
|
|
* The searchPath for the desired suffix or NULL if the suffix isn't
|
|
* defined.
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
struct Path *
|
|
Suff_GetPath(char *sname)
|
|
{
|
|
Suff *s;
|
|
|
|
s = SuffSuffFind(sname);
|
|
if (s == NULL)
|
|
return (NULL);
|
|
return (&s->searchPath);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_DoPaths --
|
|
* Extend the search paths for all suffixes to include the default
|
|
* search path.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The searchPath field of all the suffixes is extended by the
|
|
* directories in dirSearchPath. If paths were specified for the
|
|
* ".h" suffix, the directories are stuffed into a global variable
|
|
* called ".INCLUDES" with each directory preceded by a -I. The same
|
|
* is done for the ".a" suffix, except the variable is called
|
|
* ".LIBS" and the flag is -L.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_DoPaths(void)
|
|
{
|
|
Suff *s;
|
|
LstNode *ln;
|
|
char *ptr;
|
|
struct Path inIncludes; /* Cumulative .INCLUDES path */
|
|
struct Path inLibs; /* Cumulative .LIBS path */
|
|
|
|
TAILQ_INIT(&inIncludes);
|
|
TAILQ_INIT(&inLibs);
|
|
|
|
for (ln = Lst_First(&sufflist); ln != NULL; ln = Lst_Succ(ln)) {
|
|
s = Lst_Datum(ln);
|
|
#ifdef INCLUDES
|
|
if (s->flags & SUFF_INCLUDE) {
|
|
Path_Concat(&inIncludes, &s->searchPath);
|
|
}
|
|
#endif /* INCLUDES */
|
|
#ifdef LIBRARIES
|
|
if (s->flags & SUFF_LIBRARY) {
|
|
Path_Concat(&inLibs, &s->searchPath);
|
|
}
|
|
#endif /* LIBRARIES */
|
|
Path_Concat(&s->searchPath, &dirSearchPath);
|
|
}
|
|
|
|
ptr = Path_MakeFlags("-I", &inIncludes);
|
|
Var_Set(".INCLUDES", ptr, VAR_GLOBAL);
|
|
free(ptr);
|
|
|
|
ptr = Path_MakeFlags("-L", &inLibs);
|
|
Var_Set(".LIBS", ptr, VAR_GLOBAL);
|
|
free(ptr);
|
|
|
|
Path_Clear(&inIncludes);
|
|
Path_Clear(&inLibs);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_AddInclude --
|
|
* Add the given suffix as a type of file which gets included.
|
|
* Called from the parse module when a .INCLUDES line is parsed.
|
|
* The suffix must have already been defined.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The SUFF_INCLUDE bit is set in the suffix's flags field
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_AddInclude(char *sname)
|
|
{
|
|
Suff *s;
|
|
|
|
if ((s = SuffSuffFind(sname)) != NULL)
|
|
s->flags |= SUFF_INCLUDE;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_AddLib --
|
|
* Add the given suffix as a type of file which is a library.
|
|
* Called from the parse module when parsing a .LIBS line. The
|
|
* suffix must have been defined via .SUFFIXES before this is
|
|
* called.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The SUFF_LIBRARY bit is set in the suffix's flags field
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_AddLib(char *sname)
|
|
{
|
|
Suff *s;
|
|
|
|
if ((s = SuffSuffFind(sname)) != NULL)
|
|
s->flags |= SUFF_LIBRARY;
|
|
}
|
|
|
|
/*
|
|
* Create a new Src structure
|
|
*/
|
|
static Src *
|
|
SuffSrcCreate(char *file, char *prefix, Suff *suff, Src *parent, GNode *node)
|
|
{
|
|
Src *s;
|
|
|
|
s = emalloc(sizeof(*s));
|
|
s->file = file;
|
|
s->pref = prefix;
|
|
s->suff = suff;
|
|
s->parent = parent;
|
|
s->node = node;
|
|
s->children = 0;
|
|
|
|
#ifdef DEBUG_SRC
|
|
Lst_Init(&s->cp);
|
|
#endif
|
|
|
|
return (s);
|
|
}
|
|
|
|
/********** Implicit Source Search Functions *********/
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffAddLevel --
|
|
* Add all the children of targ as Src structures to the given list:
|
|
* Add a suffix as a Src structure to the given list with its parent
|
|
* being the given Src structure. If the suffix is the null suffix,
|
|
* the prefix is used unaltered as the file name in the Src structure.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Lots of structures are created and added to the list
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
SuffAddLevel(Lst *l, Src *targ)
|
|
{
|
|
LstNode *ln;
|
|
Suff *suff;
|
|
Src *s2;
|
|
#ifdef DEBUG_SRC
|
|
const LstNode *ln1;
|
|
#endif
|
|
|
|
LST_FOREACH(ln, &targ->suff->children) {
|
|
suff = Lst_Datum(ln);
|
|
|
|
if ((suff->flags & SUFF_NULL) && *suff->name != '\0') {
|
|
/*
|
|
* If the suffix has been marked as the NULL suffix,
|
|
* also create a Src structure for a file with no suffix
|
|
* attached. Two birds, and all that...
|
|
*/
|
|
s2 = SuffSrcCreate(estrdup(targ->pref), targ->pref,
|
|
suff, targ, NULL);
|
|
suff->refCount++;
|
|
targ->children += 1;
|
|
Lst_AtEnd(l, s2);
|
|
#ifdef DEBUG_SRC
|
|
Lst_AtEnd(&targ->cp, s2);
|
|
printf("1 add %p %p to %p:", targ, s2, l);
|
|
LST_FOREACH(ln1, l)
|
|
printf("%p ", (const void *)Lst_Datum(ln1));
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
s2 = SuffSrcCreate(str_concat(targ->pref, suff->name, 0),
|
|
targ->pref, suff, targ, NULL);
|
|
suff->refCount++;
|
|
targ->children += 1;
|
|
Lst_AtEnd(l, s2);
|
|
#ifdef DEBUG_SRC
|
|
Lst_AtEnd(&targ->cp, s2);
|
|
printf("2 add %p %p to %p:", targ, s2, l);
|
|
LST_FOREACH(ln1, l)
|
|
printf("%p ", (const void *)Lst_Datum(ln1));
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*----------------------------------------------------------------------
|
|
* SuffRemoveSrc --
|
|
* Free all src structures in list that don't have a reference count
|
|
* XXX this actually frees only the first of these.
|
|
*
|
|
* Results:
|
|
* True if a src was removed
|
|
*
|
|
* Side Effects:
|
|
* The memory is free'd.
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
SuffRemoveSrc(Lst *l)
|
|
{
|
|
LstNode *ln, *ln1;
|
|
Src *s;
|
|
int t = 0;
|
|
|
|
#ifdef DEBUG_SRC
|
|
printf("cleaning %lx: ", (unsigned long) l);
|
|
LST_FOREACH(ln, l)
|
|
printf("%p ", (const void *)Lst_Datum(ln));
|
|
printf("\n");
|
|
#endif
|
|
|
|
for (ln = Lst_First(l); ln != NULL; ln = ln1) {
|
|
ln1 = Lst_Succ(ln);
|
|
|
|
s = (Src *)Lst_Datum(ln);
|
|
if (s->children == 0) {
|
|
free(s->file);
|
|
if (!s->parent)
|
|
free(s->pref);
|
|
else {
|
|
#ifdef DEBUG_SRC
|
|
LstNode *ln = Lst_Member(&s->parent->cp, s);
|
|
if (ln != NULL)
|
|
Lst_Remove(&s->parent->cp, ln);
|
|
#endif
|
|
--s->parent->children;
|
|
}
|
|
#ifdef DEBUG_SRC
|
|
printf("free: [l=%p] p=%p %d\n", l, s, s->children);
|
|
Lst_Destroy(&s->cp, NOFREE);
|
|
#endif
|
|
Lst_Remove(l, ln);
|
|
free(s);
|
|
t |= 1;
|
|
return (TRUE);
|
|
}
|
|
#ifdef DEBUG_SRC
|
|
else {
|
|
const LstNode *tln;
|
|
|
|
printf("keep: [l=%p] p=%p %d: ", l, s, s->children);
|
|
LST_FOREACH(tln, &s->cp)
|
|
printf("%p ", (const void *)Lst_Datum(tln));
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return (t);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffFindThem --
|
|
* Find the first existing file/target in the list srcs
|
|
*
|
|
* Results:
|
|
* The lowest structure in the chain of transformations
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static Src *
|
|
SuffFindThem(Lst *srcs, Lst *slst)
|
|
{
|
|
Src *s; /* current Src */
|
|
Src *rs; /* returned Src */
|
|
char *ptr;
|
|
|
|
rs = NULL;
|
|
|
|
while (!Lst_IsEmpty (srcs)) {
|
|
s = Lst_DeQueue(srcs);
|
|
|
|
DEBUGF(SUFF, ("\ttrying %s...", s->file));
|
|
|
|
/*
|
|
* A file is considered to exist if either a node exists in the
|
|
* graph for it or the file actually exists.
|
|
*/
|
|
if (Targ_FindNode(s->file, TARG_NOCREATE) != NULL) {
|
|
#ifdef DEBUG_SRC
|
|
printf("remove %p from %p\n", s, srcs);
|
|
#endif
|
|
rs = s;
|
|
break;
|
|
}
|
|
|
|
if ((ptr = Path_FindFile(s->file,
|
|
&s->suff->searchPath)) != NULL) {
|
|
rs = s;
|
|
#ifdef DEBUG_SRC
|
|
printf("remove %p from %p\n", s, srcs);
|
|
#endif
|
|
free(ptr);
|
|
break;
|
|
}
|
|
|
|
DEBUGF(SUFF, ("not there\n"));
|
|
|
|
SuffAddLevel(srcs, s);
|
|
Lst_AtEnd(slst, s);
|
|
}
|
|
|
|
if (rs) {
|
|
DEBUGF(SUFF, ("got it\n"));
|
|
}
|
|
return (rs);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffFindCmds --
|
|
* See if any of the children of the target in the Src structure is
|
|
* one from which the target can be transformed. If there is one,
|
|
* a Src structure is put together for it and returned.
|
|
*
|
|
* Results:
|
|
* The Src structure of the "winning" child, or NULL if no such beast.
|
|
*
|
|
* Side Effects:
|
|
* A Src structure may be allocated.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static Src *
|
|
SuffFindCmds(Src *targ, Lst *slst)
|
|
{
|
|
LstNode *ln; /* General-purpose list node */
|
|
GNode *t; /* Target GNode */
|
|
GNode *s; /* Source GNode */
|
|
int prefLen;/* The length of the defined prefix */
|
|
Suff *suff; /* Suffix on matching beastie */
|
|
Src *ret; /* Return value */
|
|
char *cp;
|
|
|
|
t = targ->node;
|
|
prefLen = strlen(targ->pref);
|
|
|
|
for (ln = Lst_First(&t->children); ln != NULL; ln = Lst_Succ(ln)) {
|
|
s = Lst_Datum(ln);
|
|
|
|
cp = strrchr(s->name, '/');
|
|
if (cp == NULL) {
|
|
cp = s->name;
|
|
} else {
|
|
cp++;
|
|
}
|
|
if (strncmp(cp, targ->pref, prefLen) == 0) {
|
|
/*
|
|
* The node matches the prefix ok, see if it has
|
|
* a known suffix.
|
|
*/
|
|
suff = SuffSuffFind(&cp[prefLen]);
|
|
if (suff != NULL) {
|
|
/*
|
|
* It even has a known suffix, see if there's
|
|
* a transformation defined between the node's
|
|
* suffix and the target's suffix.
|
|
*
|
|
* XXX: Handle multi-stage transformations
|
|
* here, too.
|
|
*/
|
|
if (Lst_Member(&suff->parents,
|
|
targ->suff) != NULL) {
|
|
/*
|
|
* Hot Damn! Create a new Src structure
|
|
* to describe this transformation
|
|
* (making sure to duplicate the
|
|
* source node's name so Suff_FindDeps
|
|
* can free it again (ick)), and return
|
|
* the new structure.
|
|
*/
|
|
ret = SuffSrcCreate(estrdup(s->name),
|
|
targ->pref, suff, targ, s);
|
|
suff->refCount++;
|
|
targ->children += 1;
|
|
#ifdef DEBUG_SRC
|
|
printf("3 add %p %p\n", &targ, ret);
|
|
Lst_AtEnd(&targ->cp, ret);
|
|
#endif
|
|
Lst_AtEnd(slst, ret);
|
|
DEBUGF(SUFF, ("\tusing existing source "
|
|
"%s\n", s->name));
|
|
return (ret);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
/*-
|
|
* The child node contains variable references. Expand them and return
|
|
* a list of expansions.
|
|
*/
|
|
static void
|
|
SuffExpandVariables(GNode *parent, GNode *child, Lst *members)
|
|
{
|
|
Buffer *buf;
|
|
char *cp;
|
|
char *start;
|
|
|
|
Lst_Init(members);
|
|
|
|
DEBUGF(SUFF, ("Expanding \"%s\"...", child->name));
|
|
buf = Var_Subst(NULL, child->name, parent, TRUE);
|
|
cp = Buf_Data(buf);
|
|
|
|
if (child->type & OP_ARCHV) {
|
|
/*
|
|
* Node was an archive(member) target, so we
|
|
* want to call on the Arch module to find the
|
|
* nodes for us, expanding variables in the
|
|
* parent's context.
|
|
*/
|
|
Arch_ParseArchive(&cp, members, parent);
|
|
Buf_Destroy(buf, TRUE);
|
|
return;
|
|
}
|
|
/*
|
|
* Break the result into a vector of strings whose nodes we can find,
|
|
* then add those nodes to the members list. Unfortunately, we can't use
|
|
* brk_string b/c it doesn't understand about variable specifications
|
|
* with spaces in them... XXX
|
|
*/
|
|
for (start = cp; *start == ' ' || *start == '\t'; start++)
|
|
;
|
|
|
|
for (cp = start; *cp != '\0'; cp++) {
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
/*
|
|
* White-space -- terminate element, find the node,
|
|
* add it, skip any further spaces.
|
|
*/
|
|
*cp++ = '\0';
|
|
Lst_AtEnd(members, Targ_FindNode(start, TARG_CREATE));
|
|
|
|
while (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
}
|
|
/*
|
|
* Adjust cp for increment at
|
|
* start of loop, but set start
|
|
* to first non-space.
|
|
*/
|
|
start = cp--;
|
|
|
|
} else if (*cp == '$') {
|
|
/*
|
|
* Start of a variable spec -- contact variable module
|
|
* to find the end so we can skip over it.
|
|
*/
|
|
char *junk;
|
|
size_t len = 0;
|
|
Boolean doFree;
|
|
|
|
junk = Var_Parse(cp, parent, TRUE, &len, &doFree);
|
|
if (junk != var_Error) {
|
|
cp += len - 1;
|
|
}
|
|
if (doFree) {
|
|
free(junk);
|
|
}
|
|
|
|
} else if (*cp == '\\' && *cp != '\0') {
|
|
/*
|
|
* Escaped something -- skip over it
|
|
*/
|
|
cp++;
|
|
}
|
|
}
|
|
|
|
if (cp != start) {
|
|
/*
|
|
* Stuff left over -- add it to the
|
|
* list too
|
|
*/
|
|
Lst_AtEnd(members, Targ_FindNode(start, TARG_CREATE));
|
|
}
|
|
|
|
Buf_Destroy(buf, TRUE);
|
|
}
|
|
|
|
/*-
|
|
* The child node contains wildcards. Expand them and return a list of
|
|
* expansions.
|
|
*/
|
|
static void
|
|
SuffExpandWildcards(GNode *child, Lst *members)
|
|
{
|
|
char *cp;
|
|
Lst exp; /* List of expansions */
|
|
LstNode *ln;
|
|
struct Path *path; /* Search path along which to expand */
|
|
|
|
Lst_Init(members);
|
|
|
|
/*
|
|
* Find a path along which to expand the word.
|
|
*
|
|
* If the word has a known suffix, use that path.
|
|
* If it has no known suffix and we're allowed to use the null
|
|
* suffix, use its path.
|
|
* Else use the default system search path.
|
|
*/
|
|
LST_FOREACH(ln, &sufflist) {
|
|
if (SuffSuffIsSuffix(Lst_Datum(ln), child->name) != NULL)
|
|
break;
|
|
}
|
|
|
|
DEBUGF(SUFF, ("Wildcard expanding \"%s\"...", child->name));
|
|
|
|
if (ln != NULL) {
|
|
Suff *s = Lst_Datum(ln);
|
|
|
|
DEBUGF(SUFF, ("suffix is \"%s\"...", s->name));
|
|
path = &s->searchPath;
|
|
} else {
|
|
/*
|
|
* Use default search path
|
|
*/
|
|
path = &dirSearchPath;
|
|
}
|
|
|
|
/*
|
|
* Expand the word along the chosen path
|
|
*/
|
|
Lst_Init(&exp);
|
|
Path_Expand(child->name, path, &exp);
|
|
|
|
while (!Lst_IsEmpty(&exp)) {
|
|
/*
|
|
* Fetch next expansion off the list and find its GNode
|
|
*/
|
|
cp = Lst_DeQueue(&exp);
|
|
|
|
DEBUGF(SUFF, ("%s...", cp));
|
|
Lst_AtEnd(members, Targ_FindNode(cp, TARG_CREATE));
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffExpandChildren --
|
|
* Expand the names of any children of a given node that contain
|
|
* variable invocations or file wildcards into actual targets.
|
|
*
|
|
* Results:
|
|
* == 0 (continue)
|
|
*
|
|
* Side Effects:
|
|
* The expanded node is removed from the parent's list of children,
|
|
* and the parent's unmade counter is decremented, but other nodes
|
|
* may be added.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
SuffExpandChildren(GNode *parent, LstNode *current)
|
|
{
|
|
GNode *cchild; /* current child */
|
|
GNode *gn;
|
|
LstNode *prev; /* node after which to append new source */
|
|
Lst members; /* expanded nodes */
|
|
|
|
if (current == NULL) {
|
|
/* start from begin of parent's children list */
|
|
current = Lst_First(&parent->children);
|
|
}
|
|
|
|
while (current != NULL) {
|
|
cchild = Lst_Datum(current);
|
|
|
|
/*
|
|
* First do variable expansion -- this takes precedence over
|
|
* wildcard expansion. If the result contains wildcards, they'll
|
|
* be gotten to later since the resulting words are tacked
|
|
* instead of the current child onto the children list.
|
|
*
|
|
* XXXHB what if cchild contains lib.a(t1.o t2.o t3.o) but
|
|
* no $?
|
|
*/
|
|
if (strchr(cchild->name, '$') != NULL) {
|
|
SuffExpandVariables(parent, cchild, &members);
|
|
|
|
} else if (Dir_HasWildcards(cchild->name)) {
|
|
SuffExpandWildcards(cchild, &members);
|
|
|
|
} else {
|
|
/* nothing special just advance to next child */
|
|
current = LST_NEXT(current);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* New nodes effectively take the place of the child,
|
|
* so place them after the child
|
|
*/
|
|
prev = current;
|
|
|
|
/*
|
|
* Add all new elements to the parent node if they aren't
|
|
* already children of it.
|
|
*/
|
|
while(!Lst_IsEmpty(&members)) {
|
|
gn = Lst_DeQueue(&members);
|
|
|
|
DEBUGF(SUFF, ("%s...", gn->name));
|
|
if (Lst_Member(&parent->children, gn) == NULL) {
|
|
Lst_Append(&parent->children, prev, gn);
|
|
prev = Lst_Succ(prev);
|
|
Lst_AtEnd(&gn->parents, parent);
|
|
parent->unmade++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now the source is expanded, remove it from the list
|
|
* of children to keep it from being processed.
|
|
* Advance to the next child.
|
|
*/
|
|
prev = current;
|
|
current = LST_NEXT(current);
|
|
|
|
parent->unmade--;
|
|
Lst_Remove(&parent->children, prev);
|
|
DEBUGF(SUFF, ("\n"));
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffApplyTransform --
|
|
* Apply a transformation rule, given the source and target nodes
|
|
* and suffixes.
|
|
*
|
|
* Results:
|
|
* TRUE if successful, FALSE if not.
|
|
*
|
|
* Side Effects:
|
|
* The source and target are linked and the commands from the
|
|
* transformation are added to the target node's commands list.
|
|
* All attributes but OP_DEPMASK and OP_TRANSFORM are applied
|
|
* to the target. The target also inherits all the sources for
|
|
* the transformation rule.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static Boolean
|
|
SuffApplyTransform(GNode *tGn, GNode *sGn, Suff *t, Suff *s)
|
|
{
|
|
LstNode *ln; /* General node */
|
|
char *tname; /* Name of transformation rule */
|
|
GNode *gn; /* Node for same */
|
|
|
|
if (Lst_Member(&tGn->children, sGn) == NULL) {
|
|
/*
|
|
* Not already linked, so form the proper links between the
|
|
* target and source.
|
|
*/
|
|
Lst_AtEnd(&tGn->children, sGn);
|
|
Lst_AtEnd(&sGn->parents, tGn);
|
|
tGn->unmade += 1;
|
|
}
|
|
|
|
if ((sGn->type & OP_OPMASK) == OP_DOUBLEDEP) {
|
|
/*
|
|
* When a :: node is used as the implied source of a node,
|
|
* we have to link all its cohorts in as sources as well. Only
|
|
* the initial sGn gets the target in its iParents list, however
|
|
* as that will be sufficient to get the .IMPSRC variable set
|
|
* for tGn
|
|
*/
|
|
for (ln = Lst_First(&sGn->cohorts); ln != NULL;
|
|
ln = Lst_Succ(ln)) {
|
|
gn = Lst_Datum(ln);
|
|
|
|
if (Lst_Member(&tGn->children, gn) == NULL) {
|
|
/*
|
|
* Not already linked, so form the proper
|
|
* links between the target and source.
|
|
*/
|
|
Lst_AtEnd(&tGn->children, gn);
|
|
Lst_AtEnd(&gn->parents, tGn);
|
|
tGn->unmade += 1;
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Locate the transformation rule itself
|
|
*/
|
|
tname = str_concat(s->name, t->name, 0);
|
|
gn = SuffTransFind(tname);
|
|
free(tname);
|
|
|
|
if (gn == NULL) {
|
|
/*
|
|
* Not really such a transformation rule (can happen when we're
|
|
* called to link an OP_MEMBER and OP_ARCHV node), so return
|
|
* FALSE.
|
|
*/
|
|
return (FALSE);
|
|
}
|
|
|
|
DEBUGF(SUFF, ("\tapplying %s -> %s to \"%s\"\n",
|
|
s->name, t->name, tGn->name));
|
|
|
|
/*
|
|
* Record last child for expansion purposes
|
|
*/
|
|
ln = Lst_Last(&tGn->children);
|
|
|
|
/*
|
|
* Pass the buck to Make_HandleUse to apply the rule
|
|
*/
|
|
Make_HandleUse(gn, tGn);
|
|
|
|
/*
|
|
* Deal with wildcards and variables in any acquired sources
|
|
*/
|
|
ln = Lst_Succ(ln);
|
|
if (ln != NULL) {
|
|
SuffExpandChildren(tGn, ln);
|
|
}
|
|
|
|
/*
|
|
* Keep track of another parent to which this beast is transformed so
|
|
* the .IMPSRC variable can be set correctly for the parent.
|
|
*/
|
|
Lst_AtEnd(&sGn->iParents, tGn);
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffFindArchiveDeps --
|
|
* Locate dependencies for an OP_ARCHV node.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Same as Suff_FindDeps
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
SuffFindArchiveDeps(GNode *gn, Lst *slst)
|
|
{
|
|
char *eoarch; /* End of archive portion */
|
|
char *eoname; /* End of member portion */
|
|
GNode *mem; /* Node for member */
|
|
/* Variables to be copied from the member node */
|
|
static char *const copy[] = {
|
|
TARGET, /* Must be first */
|
|
PREFIX, /* Must be second */
|
|
};
|
|
int i; /* Index into copy and vals */
|
|
Suff *ms; /* Suffix descriptor for member */
|
|
char *name; /* Start of member's name */
|
|
|
|
/*
|
|
* The node is an archive(member) pair. so we must find a
|
|
* suffix for both of them.
|
|
*/
|
|
eoarch = strchr(gn->name, '(');
|
|
eoname = strchr(eoarch, ')');
|
|
|
|
*eoname = '\0'; /* Nuke parentheses during suffix search */
|
|
*eoarch = '\0'; /* So a suffix can be found */
|
|
|
|
name = eoarch + 1;
|
|
|
|
/*
|
|
* To simplify things, call Suff_FindDeps recursively on the member now,
|
|
* so we can simply compare the member's .PREFIX and .TARGET variables
|
|
* to locate its suffix. This allows us to figure out the suffix to
|
|
* use for the archive without having to do a quadratic search over the
|
|
* suffix list, backtracking for each one...
|
|
*/
|
|
mem = Targ_FindNode(name, TARG_CREATE);
|
|
SuffFindDeps(mem, slst);
|
|
|
|
/*
|
|
* Create the link between the two nodes right off
|
|
*/
|
|
if (Lst_Member(&gn->children, mem) == NULL) {
|
|
Lst_AtEnd(&gn->children, mem);
|
|
Lst_AtEnd(&mem->parents, gn);
|
|
gn->unmade += 1;
|
|
}
|
|
|
|
/*
|
|
* Copy in the variables from the member node to this one.
|
|
*/
|
|
for (i = (sizeof(copy) / sizeof(copy[0]))-1; i >= 0; i--) {
|
|
char *p1;
|
|
Var_Set(copy[i], Var_Value(copy[i], mem, &p1), gn);
|
|
free(p1);
|
|
}
|
|
|
|
ms = mem->suffix;
|
|
if (ms == NULL) {
|
|
/*
|
|
* Didn't know what it was -- use .NULL suffix if not in
|
|
* make mode
|
|
*/
|
|
DEBUGF(SUFF, ("using null suffix\n"));
|
|
ms = suffNull;
|
|
}
|
|
|
|
|
|
/*
|
|
* Set the other two local variables required for this target.
|
|
*/
|
|
Var_Set(MEMBER, name, gn);
|
|
Var_Set(ARCHIVE, gn->name, gn);
|
|
|
|
if (ms != NULL) {
|
|
/*
|
|
* Member has a known suffix, so look for a transformation rule
|
|
* from it to a possible suffix of the archive. Rather than
|
|
* searching through the entire list, we just look at suffixes
|
|
* to which the member's suffix may be transformed...
|
|
*/
|
|
LstNode *ln;
|
|
|
|
/*
|
|
* Use first matching suffix...
|
|
*/
|
|
LST_FOREACH(ln, &ms->parents) {
|
|
if (SuffSuffIsSuffix(Lst_Datum(ln), gn->name) != NULL)
|
|
break;
|
|
}
|
|
|
|
if (ln != NULL) {
|
|
/*
|
|
* Got one -- apply it
|
|
*/
|
|
if (!SuffApplyTransform(gn, mem, Lst_Datum(ln), ms)) {
|
|
DEBUGF(SUFF, ("\tNo transformation from "
|
|
"%s -> %s\n", ms->name,
|
|
((Suff *)Lst_Datum(ln))->name));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Replace the opening and closing parens now we've no need
|
|
* of the separate pieces.
|
|
*/
|
|
*eoarch = '(';
|
|
*eoname = ')';
|
|
|
|
/*
|
|
* Pretend gn appeared to the left of a dependency operator so
|
|
* the user needn't provide a transformation from the member to the
|
|
* archive.
|
|
*/
|
|
if (OP_NOP(gn->type)) {
|
|
gn->type |= OP_DEPENDS;
|
|
}
|
|
|
|
/*
|
|
* Flag the member as such so we remember to look in the archive for
|
|
* its modification time.
|
|
*/
|
|
mem->type |= OP_MEMBER;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* SuffFindNormalDeps --
|
|
* Locate implicit dependencies for regular targets.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* Same as Suff_FindDeps...
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static void
|
|
SuffFindNormalDeps(GNode *gn, Lst *slst)
|
|
{
|
|
char *eoname; /* End of name */
|
|
char *sopref; /* Start of prefix */
|
|
LstNode *ln; /* Next suffix node to check */
|
|
Lst srcs; /* List of sources at which to look */
|
|
Lst targs; /* List of targets to which things can be
|
|
* transformed. They all have the same file,
|
|
* but different suff and pref fields */
|
|
Src *bottom; /* Start of found transformation path */
|
|
Src *src; /* General Src pointer */
|
|
char *pref; /* Prefix to use */
|
|
Src *targ; /* General Src target pointer */
|
|
|
|
eoname = gn->name + strlen(gn->name);
|
|
sopref = gn->name;
|
|
|
|
/*
|
|
* Begin at the beginning...
|
|
*/
|
|
ln = Lst_First(&sufflist);
|
|
Lst_Init(&srcs);
|
|
Lst_Init(&targs);
|
|
|
|
/*
|
|
* We're caught in a catch-22 here. On the one hand, we want to use any
|
|
* transformation implied by the target's sources, but we can't examine
|
|
* the sources until we've expanded any variables/wildcards they may
|
|
* hold, and we can't do that until we've set up the target's local
|
|
* variables and we can't do that until we know what the proper suffix
|
|
* for the target is (in case there are two suffixes one of which is a
|
|
* suffix of the other) and we can't know that until we've found its
|
|
* implied source, which we may not want to use if there's an existing
|
|
* source that implies a different transformation.
|
|
*
|
|
* In an attempt to get around this, which may not work all the time,
|
|
* but should work most of the time, we look for implied sources first,
|
|
* checking transformations to all possible suffixes of the target,
|
|
* use what we find to set the target's local variables, expand the
|
|
* children, then look for any overriding transformations they imply.
|
|
* Should we find one, we discard the one we found before.
|
|
*/
|
|
|
|
while (ln != NULL) {
|
|
/*
|
|
* Look for next possible suffix...
|
|
*/
|
|
while (ln != NULL) {
|
|
if (SuffSuffIsSuffix(Lst_Datum(ln), gn->name) != NULL)
|
|
break;
|
|
ln = LST_NEXT(ln);
|
|
}
|
|
|
|
if (ln != NULL) {
|
|
int prefLen; /* Length of the prefix */
|
|
Src *target;
|
|
|
|
/*
|
|
* Allocate a Src structure to which things can be
|
|
* transformed
|
|
*/
|
|
target = SuffSrcCreate(estrdup(gn->name), NULL,
|
|
Lst_Datum(ln), NULL, gn);
|
|
target->suff->refCount++;
|
|
|
|
/*
|
|
* Allocate room for the prefix, whose end is found
|
|
* by subtracting the length of the suffix from
|
|
* the end of the name.
|
|
*/
|
|
prefLen = (eoname - target->suff->nameLen) - sopref;
|
|
assert(prefLen >= 0);
|
|
target->pref = emalloc(prefLen + 1);
|
|
memcpy(target->pref, sopref, prefLen);
|
|
target->pref[prefLen] = '\0';
|
|
|
|
/*
|
|
* Add nodes from which the target can be made
|
|
*/
|
|
SuffAddLevel(&srcs, target);
|
|
|
|
/*
|
|
* Record the target so we can nuke it
|
|
*/
|
|
Lst_AtEnd(&targs, target);
|
|
|
|
/*
|
|
* Search from this suffix's successor...
|
|
*/
|
|
ln = Lst_Succ(ln);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle target of unknown suffix...
|
|
*/
|
|
if (Lst_IsEmpty(&targs) && suffNull != NULL) {
|
|
DEBUGF(SUFF, ("\tNo known suffix on %s. Using .NULL suffix\n",
|
|
gn->name));
|
|
|
|
targ = SuffSrcCreate(estrdup(gn->name), estrdup(sopref),
|
|
suffNull, NULL, gn);
|
|
targ->suff->refCount++;
|
|
|
|
/*
|
|
* Only use the default suffix rules if we don't have commands
|
|
* or dependencies defined for this gnode
|
|
*/
|
|
if (Lst_IsEmpty(&gn->commands) && Lst_IsEmpty(&gn->children))
|
|
SuffAddLevel(&srcs, targ);
|
|
else {
|
|
DEBUGF(SUFF, ("not "));
|
|
}
|
|
|
|
DEBUGF(SUFF, ("adding suffix rules\n"));
|
|
|
|
Lst_AtEnd(&targs, targ);
|
|
}
|
|
|
|
/*
|
|
* Using the list of possible sources built up from the target
|
|
* suffix(es), try and find an existing file/target that matches.
|
|
*/
|
|
bottom = SuffFindThem(&srcs, slst);
|
|
|
|
if (bottom == NULL) {
|
|
/*
|
|
* No known transformations -- use the first suffix found for
|
|
* setting the local variables.
|
|
*/
|
|
if (!Lst_IsEmpty(&targs)) {
|
|
targ = Lst_Datum(Lst_First(&targs));
|
|
} else {
|
|
targ = NULL;
|
|
}
|
|
} else {
|
|
/*
|
|
* Work up the transformation path to find the suffix of the
|
|
* target to which the transformation was made.
|
|
*/
|
|
for (targ = bottom; targ->parent != NULL; targ = targ->parent)
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* The .TARGET variable we always set to be the name at this point,
|
|
* since it's only set to the path if the thing is only a source and
|
|
* if it's only a source, it doesn't matter what we put here as far
|
|
* as expanding sources is concerned, since it has none...
|
|
*/
|
|
Var_Set(TARGET, gn->name, gn);
|
|
|
|
pref = (targ != NULL) ? targ->pref : gn->name;
|
|
Var_Set(PREFIX, pref, gn);
|
|
|
|
/*
|
|
* Now we've got the important local variables set, expand any sources
|
|
* that still contain variables or wildcards in their names.
|
|
*/
|
|
SuffExpandChildren(gn, NULL);
|
|
|
|
if (targ == NULL) {
|
|
DEBUGF(SUFF, ("\tNo valid suffix on %s\n", gn->name));
|
|
|
|
sfnd_abort:
|
|
/*
|
|
* Deal with finding the thing on the default search path if the
|
|
* node is only a source (not on the lhs of a dependency
|
|
* operator or [XXX] it has neither children or commands).
|
|
*/
|
|
if (OP_NOP(gn->type) || (Lst_IsEmpty(&gn->children) &&
|
|
Lst_IsEmpty(&gn->commands))) {
|
|
gn->path = Path_FindFile(gn->name,
|
|
(targ == NULL ? &dirSearchPath :
|
|
&targ->suff->searchPath));
|
|
if (gn->path != NULL) {
|
|
char *ptr;
|
|
Var_Set(TARGET, gn->path, gn);
|
|
|
|
if (targ != NULL) {
|
|
/*
|
|
* Suffix known for the thing -- trim
|
|
* the suffix off the path to form the
|
|
* proper .PREFIX variable.
|
|
*/
|
|
int savep = strlen(gn->path) -
|
|
targ->suff->nameLen;
|
|
char savec;
|
|
|
|
if (gn->suffix)
|
|
gn->suffix->refCount--;
|
|
gn->suffix = targ->suff;
|
|
gn->suffix->refCount++;
|
|
|
|
savec = gn->path[savep];
|
|
gn->path[savep] = '\0';
|
|
|
|
if ((ptr = strrchr(gn->path, '/')) != NULL)
|
|
ptr++;
|
|
else
|
|
ptr = gn->path;
|
|
|
|
Var_Set(PREFIX, ptr, gn);
|
|
|
|
gn->path[savep] = savec;
|
|
} else {
|
|
/*
|
|
* The .PREFIX gets the full path if
|
|
* the target has no known suffix.
|
|
*/
|
|
if (gn->suffix)
|
|
gn->suffix->refCount--;
|
|
gn->suffix = NULL;
|
|
|
|
if ((ptr = strrchr(gn->path, '/')) != NULL)
|
|
ptr++;
|
|
else
|
|
ptr = gn->path;
|
|
|
|
Var_Set(PREFIX, ptr, gn);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* Not appropriate to search for the thing -- set the
|
|
* path to be the name so Dir_MTime won't go
|
|
* grovelling for it.
|
|
*/
|
|
if (gn->suffix)
|
|
gn->suffix->refCount--;
|
|
gn->suffix = (targ == NULL) ? NULL : targ->suff;
|
|
if (gn->suffix)
|
|
gn->suffix->refCount++;
|
|
free(gn->path);
|
|
gn->path = estrdup(gn->name);
|
|
}
|
|
|
|
goto sfnd_return;
|
|
}
|
|
|
|
/*
|
|
* If the suffix indicates that the target is a library, mark that in
|
|
* the node's type field.
|
|
*/
|
|
if (targ->suff->flags & SUFF_LIBRARY) {
|
|
gn->type |= OP_LIB;
|
|
}
|
|
|
|
/*
|
|
* Check for overriding transformation rule implied by sources
|
|
*/
|
|
if (!Lst_IsEmpty(&gn->children)) {
|
|
src = SuffFindCmds(targ, slst);
|
|
|
|
if (src != NULL) {
|
|
/*
|
|
* Free up all the Src structures in the
|
|
* transformation path up to, but not including,
|
|
* the parent node.
|
|
*/
|
|
while (bottom && bottom->parent != NULL) {
|
|
if (Lst_Member(slst, bottom) == NULL) {
|
|
Lst_AtEnd(slst, bottom);
|
|
}
|
|
bottom = bottom->parent;
|
|
}
|
|
bottom = src;
|
|
}
|
|
}
|
|
|
|
if (bottom == NULL) {
|
|
/*
|
|
* No idea from where it can come -- return now.
|
|
*/
|
|
goto sfnd_abort;
|
|
}
|
|
|
|
/*
|
|
* We now have a list of Src structures headed by 'bottom' and linked
|
|
* via their 'parent' pointers. What we do next is create links between
|
|
* source and target nodes (which may or may not have been created)
|
|
* and set the necessary local variables in each target. The
|
|
* commands for each target are set from the commands of the
|
|
* transformation rule used to get from the src suffix to the targ
|
|
* suffix. Note that this causes the commands list of the original
|
|
* node, gn, to be replaced by the commands of the final
|
|
* transformation rule. Also, the unmade field of gn is incremented.
|
|
* Etc.
|
|
*/
|
|
if (bottom->node == NULL) {
|
|
bottom->node = Targ_FindNode(bottom->file, TARG_CREATE);
|
|
}
|
|
|
|
for (src = bottom; src->parent != NULL; src = src->parent) {
|
|
targ = src->parent;
|
|
|
|
if (src->node->suffix)
|
|
src->node->suffix->refCount--;
|
|
src->node->suffix = src->suff;
|
|
src->node->suffix->refCount++;
|
|
|
|
if (targ->node == NULL) {
|
|
targ->node = Targ_FindNode(targ->file, TARG_CREATE);
|
|
}
|
|
|
|
SuffApplyTransform(targ->node, src->node,
|
|
targ->suff, src->suff);
|
|
|
|
if (targ->node != gn) {
|
|
/*
|
|
* Finish off the dependency-search process for any
|
|
* nodes between bottom and gn (no point in questing
|
|
* around the filesystem for their implicit source
|
|
* when it's already known). Note that the node can't
|
|
* have any sources that need expanding, since
|
|
* SuffFindThem will stop on an existing
|
|
* node, so all we need to do is set the standard and
|
|
* System V variables.
|
|
*/
|
|
targ->node->type |= OP_DEPS_FOUND;
|
|
|
|
Var_Set(PREFIX, targ->pref, targ->node);
|
|
Var_Set(TARGET, targ->node->name, targ->node);
|
|
}
|
|
}
|
|
|
|
if (gn->suffix)
|
|
gn->suffix->refCount--;
|
|
gn->suffix = src->suff;
|
|
gn->suffix->refCount++;
|
|
|
|
/*
|
|
* So Dir_MTime doesn't go questing for it...
|
|
*/
|
|
free(gn->path);
|
|
gn->path = estrdup(gn->name);
|
|
|
|
/*
|
|
* Nuke the transformation path and the Src structures left over in the
|
|
* two lists.
|
|
*/
|
|
sfnd_return:
|
|
if (bottom)
|
|
if (Lst_Member(slst, bottom) == NULL)
|
|
Lst_AtEnd(slst, bottom);
|
|
|
|
while (SuffRemoveSrc(&srcs) || SuffRemoveSrc(&targs))
|
|
continue;
|
|
|
|
Lst_Concat(slst, &srcs, LST_CONCLINK);
|
|
Lst_Concat(slst, &targs, LST_CONCLINK);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_FindDeps --
|
|
* Find implicit sources for the target described by the graph node
|
|
* gn
|
|
*
|
|
* Results:
|
|
* Nothing.
|
|
*
|
|
* Side Effects:
|
|
* Nodes are added to the graph below the passed-in node. The nodes
|
|
* are marked to have their IMPSRC variable filled in. The
|
|
* PREFIX variable is set for the given node and all its
|
|
* implied children.
|
|
*
|
|
* Notes:
|
|
* The path found by this target is the shortest path in the
|
|
* transformation graph, which may pass through non-existent targets,
|
|
* to an existing target. The search continues on all paths from the
|
|
* root suffix until a file is found. I.e. if there's a path
|
|
* .o -> .c -> .l -> .l,v from the root and the .l,v file exists but
|
|
* the .c and .l files don't, the search will branch out in
|
|
* all directions from .o and again from all the nodes on the
|
|
* next level until the .l,v node is encountered.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_FindDeps(GNode *gn)
|
|
{
|
|
|
|
SuffFindDeps(gn, &srclist);
|
|
while (SuffRemoveSrc(&srclist))
|
|
continue;
|
|
}
|
|
|
|
|
|
static void
|
|
SuffFindDeps(GNode *gn, Lst *slst)
|
|
{
|
|
|
|
if (gn->type & OP_DEPS_FOUND) {
|
|
/*
|
|
* If dependencies already found, no need to do it again...
|
|
*/
|
|
return;
|
|
} else {
|
|
gn->type |= OP_DEPS_FOUND;
|
|
}
|
|
|
|
DEBUGF(SUFF, ("SuffFindDeps (%s)\n", gn->name));
|
|
|
|
if (gn->type & OP_ARCHV) {
|
|
SuffFindArchiveDeps(gn, slst);
|
|
|
|
} else if (gn->type & OP_LIB) {
|
|
/*
|
|
* If the node is a library, it is the arch module's job to find
|
|
* it and set the TARGET variable accordingly. We merely provide
|
|
* the search path, assuming all libraries end in ".a" (if the
|
|
* suffix hasn't been defined, there's nothing we can do for it,
|
|
* so we just set the TARGET variable to the node's name in order
|
|
* to give it a value).
|
|
*/
|
|
Suff *s;
|
|
|
|
s = SuffSuffFind(LIBSUFF);
|
|
if (gn->suffix)
|
|
gn->suffix->refCount--;
|
|
if (s != NULL) {
|
|
gn->suffix = s;
|
|
gn->suffix->refCount++;
|
|
Arch_FindLib(gn, &s->searchPath);
|
|
} else {
|
|
gn->suffix = NULL;
|
|
Var_Set(TARGET, gn->name, gn);
|
|
}
|
|
|
|
/*
|
|
* Because a library (-lfoo) target doesn't follow the standard
|
|
* filesystem conventions, we don't set the regular variables for
|
|
* the thing. .PREFIX is simply made empty...
|
|
*/
|
|
Var_Set(PREFIX, "", gn);
|
|
|
|
} else {
|
|
SuffFindNormalDeps(gn, slst);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_SetNull --
|
|
* Define which suffix is the null suffix.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* 'suffNull' is altered.
|
|
*
|
|
* Notes:
|
|
* Need to handle the changing of the null suffix gracefully so the
|
|
* old transformation rules don't just go away.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_SetNull(char *name)
|
|
{
|
|
Suff *s;
|
|
|
|
if ((s = SuffSuffFind(name)) == NULL) {
|
|
Parse_Error(PARSE_WARNING, "Desired null suffix %s "
|
|
"not defined.", name);
|
|
return;
|
|
}
|
|
|
|
if (suffNull != NULL) {
|
|
suffNull->flags &= ~SUFF_NULL;
|
|
}
|
|
s->flags |= SUFF_NULL;
|
|
|
|
/*
|
|
* XXX: Here's where the transformation mangling
|
|
* would take place
|
|
*/
|
|
suffNull = s;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Suff_Init --
|
|
* Initialize suffixes module
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Many
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Suff_Init(void)
|
|
{
|
|
|
|
sNum = 0;
|
|
/*
|
|
* Create null suffix for single-suffix rules (POSIX). The thing doesn't
|
|
* actually go on the suffix list or everyone will think that's its
|
|
* suffix.
|
|
*/
|
|
emptySuff = suffNull = emalloc(sizeof(Suff));
|
|
|
|
suffNull->name = estrdup("");
|
|
suffNull->nameLen = 0;
|
|
TAILQ_INIT(&suffNull->searchPath);
|
|
Path_Concat(&suffNull->searchPath, &dirSearchPath);
|
|
Lst_Init(&suffNull->children);
|
|
Lst_Init(&suffNull->parents);
|
|
Lst_Init(&suffNull->ref);
|
|
suffNull->sNum = sNum++;
|
|
suffNull->flags = SUFF_NULL;
|
|
suffNull->refCount = 1;
|
|
}
|
|
|
|
/********************* DEBUGGING FUNCTIONS **********************/
|
|
|
|
void
|
|
Suff_PrintAll(void)
|
|
{
|
|
const LstNode *ln;
|
|
const LstNode *tln;
|
|
const GNode *gn;
|
|
const Suff *s;
|
|
|
|
static const struct flag2str suff_flags[] = {
|
|
{ SUFF_INCLUDE, "INCLUDE" },
|
|
{ SUFF_LIBRARY, "LIBRARY" },
|
|
{ SUFF_NULL, "NULL" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
printf("#*** Suffixes:\n");
|
|
LST_FOREACH(ln, &sufflist) {
|
|
s = Lst_Datum(ln);
|
|
printf("# `%s' [%d] ", s->name, s->refCount);
|
|
|
|
if (s->flags != 0) {
|
|
printf(" ");
|
|
print_flags(stdout, suff_flags, s->flags);
|
|
}
|
|
|
|
printf("\n#\tTo: ");
|
|
LST_FOREACH(tln, &s->parents)
|
|
printf("`%s' ", ((const Suff *)Lst_Datum(tln))->name);
|
|
|
|
printf("\n#\tFrom: ");
|
|
LST_FOREACH(tln, &s->children)
|
|
printf("`%s' ", ((const Suff *)Lst_Datum(tln))->name);
|
|
|
|
printf("\n#\tSearch Path: ");
|
|
Path_Print(&s->searchPath);
|
|
|
|
printf("\n");
|
|
}
|
|
|
|
printf("#*** Transformations:\n");
|
|
LST_FOREACH(ln, &transforms) {
|
|
gn = Lst_Datum(ln);
|
|
printf("%-16s: ", gn->name);
|
|
Targ_PrintType(gn->type);
|
|
printf("\n");
|
|
LST_FOREACH(tln, &gn->commands)
|
|
printf("\t%s\n", (const char *)Lst_Datum(tln));
|
|
printf("\n");
|
|
}
|
|
}
|