mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
d9bc822f0f
* don't whine about non-regular files. It is perfectly normal to keep a CVS or RCS directory in /etc/rc.d. * manpage tweak
822 lines
18 KiB
C
822 lines
18 KiB
C
/* $NetBSD: rcorder.c,v 1.7 2000/08/04 07:33:55 enami Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998, 1999 Matthew R. Green
|
|
* All rights reserved.
|
|
* Copyright (c) 1998
|
|
* Perry E. Metzger. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project
|
|
* by Perry E. Metzger.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <util.h>
|
|
|
|
#include "ealloc.h"
|
|
#include "sprite.h"
|
|
#include "hash.h"
|
|
|
|
#ifdef DEBUG
|
|
int debug = 0;
|
|
# define DPRINTF(args) if (debug) { fflush(stdout); fprintf args; }
|
|
#else
|
|
# define DPRINTF(args)
|
|
#endif
|
|
|
|
#define REQUIRE_STR "# REQUIRE:"
|
|
#define REQUIRE_LEN (sizeof(REQUIRE_STR) - 1)
|
|
#define REQUIRES_STR "# REQUIRES:"
|
|
#define REQUIRES_LEN (sizeof(REQUIRES_STR) - 1)
|
|
#define PROVIDE_STR "# PROVIDE:"
|
|
#define PROVIDE_LEN (sizeof(PROVIDE_STR) - 1)
|
|
#define PROVIDES_STR "# PROVIDES:"
|
|
#define PROVIDES_LEN (sizeof(PROVIDES_STR) - 1)
|
|
#define BEFORE_STR "# BEFORE:"
|
|
#define BEFORE_LEN (sizeof(BEFORE_STR) - 1)
|
|
#define KEYWORD_STR "# KEYWORD:"
|
|
#define KEYWORD_LEN (sizeof(KEYWORD_STR) - 1)
|
|
#define KEYWORDS_STR "# KEYWORDS:"
|
|
#define KEYWORDS_LEN (sizeof(KEYWORDS_STR) - 1)
|
|
|
|
int exit_code;
|
|
int file_count;
|
|
char **file_list;
|
|
|
|
typedef int bool;
|
|
#define TRUE 1
|
|
#define FALSE 0
|
|
typedef bool flag;
|
|
#define SET TRUE
|
|
#define RESET FALSE
|
|
|
|
Hash_Table provide_hash_s, *provide_hash;
|
|
|
|
typedef struct provnode provnode;
|
|
typedef struct filenode filenode;
|
|
typedef struct f_provnode f_provnode;
|
|
typedef struct f_reqnode f_reqnode;
|
|
typedef struct strnodelist strnodelist;
|
|
|
|
struct provnode {
|
|
flag head;
|
|
flag in_progress;
|
|
filenode *fnode;
|
|
provnode *next, *last;
|
|
};
|
|
|
|
struct f_provnode {
|
|
provnode *pnode;
|
|
f_provnode *next;
|
|
};
|
|
|
|
struct f_reqnode {
|
|
Hash_Entry *entry;
|
|
f_reqnode *next;
|
|
};
|
|
|
|
struct strnodelist {
|
|
filenode *node;
|
|
strnodelist *next;
|
|
char s[1];
|
|
};
|
|
|
|
struct filenode {
|
|
char *filename;
|
|
flag in_progress;
|
|
filenode *next, *last;
|
|
f_reqnode *req_list;
|
|
f_provnode *prov_list;
|
|
strnodelist *keyword_list;
|
|
};
|
|
|
|
filenode fn_head_s, *fn_head;
|
|
|
|
strnodelist *bl_list;
|
|
strnodelist *keep_list;
|
|
strnodelist *skip_list;
|
|
|
|
void do_file __P((filenode *fnode));
|
|
void strnode_add __P((strnodelist **, char *, filenode *));
|
|
int skip_ok __P((filenode *fnode));
|
|
int keep_ok __P((filenode *fnode));
|
|
void satisfy_req __P((f_reqnode *rnode, char *filename));
|
|
void crunch_file __P((char *));
|
|
void parse_require __P((filenode *, char *));
|
|
void parse_provide __P((filenode *, char *));
|
|
void parse_before __P((filenode *, char *));
|
|
void parse_keywords __P((filenode *, char *));
|
|
filenode *filenode_new __P((char *));
|
|
void add_require __P((filenode *, char *));
|
|
void add_provide __P((filenode *, char *));
|
|
void add_before __P((filenode *, char *));
|
|
void add_keyword __P((filenode *, char *));
|
|
void insert_before __P((void));
|
|
Hash_Entry *make_fake_provision __P((filenode *));
|
|
void crunch_all_files __P((void));
|
|
void initialize __P((void));
|
|
void generate_ordering __P((void));
|
|
int main __P((int, char *[]));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int ch;
|
|
|
|
while ((ch = getopt(argc, argv, "dk:s:")) != -1)
|
|
switch (ch) {
|
|
case 'd':
|
|
#ifdef DEBUG
|
|
debug = 1;
|
|
#else
|
|
warnx("debugging not compiled in, -d ignored");
|
|
#endif
|
|
break;
|
|
case 'k':
|
|
strnode_add(&keep_list, optarg, 0);
|
|
break;
|
|
case 's':
|
|
strnode_add(&skip_list, optarg, 0);
|
|
break;
|
|
default:
|
|
/* XXX should crunch it? */
|
|
break;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
file_count = argc;
|
|
file_list = argv;
|
|
|
|
DPRINTF((stderr, "parse_args\n"));
|
|
initialize();
|
|
DPRINTF((stderr, "initialize\n"));
|
|
crunch_all_files();
|
|
DPRINTF((stderr, "crunch_all_files\n"));
|
|
generate_ordering();
|
|
DPRINTF((stderr, "generate_ordering\n"));
|
|
|
|
exit(exit_code);
|
|
}
|
|
|
|
/*
|
|
* initialise various variables.
|
|
*/
|
|
void
|
|
initialize()
|
|
{
|
|
|
|
fn_head = &fn_head_s;
|
|
|
|
provide_hash = &provide_hash_s;
|
|
Hash_InitTable(provide_hash, file_count);
|
|
}
|
|
|
|
/* generic function to insert a new strnodelist element */
|
|
void
|
|
strnode_add(listp, s, fnode)
|
|
strnodelist **listp;
|
|
char *s;
|
|
filenode *fnode;
|
|
{
|
|
strnodelist *ent;
|
|
|
|
ent = emalloc(sizeof *ent + strlen(s));
|
|
ent->node = fnode;
|
|
strcpy(ent->s, s);
|
|
ent->next = *listp;
|
|
*listp = ent;
|
|
}
|
|
|
|
/*
|
|
* below are the functions that deal with creating the lists
|
|
* from the filename's given and the dependancies and provisions
|
|
* in each of these files. no ordering or checking is done here.
|
|
*/
|
|
|
|
/*
|
|
* we have a new filename, create a new filenode structure.
|
|
* fill in the bits, and put it in the filenode linked list
|
|
*/
|
|
filenode *
|
|
filenode_new(filename)
|
|
char *filename;
|
|
{
|
|
filenode *temp;
|
|
|
|
temp = emalloc(sizeof(*temp));
|
|
memset(temp, 0, sizeof(*temp));
|
|
temp->filename = estrdup(filename);
|
|
temp->req_list = NULL;
|
|
temp->prov_list = NULL;
|
|
temp->keyword_list = NULL;
|
|
temp->in_progress = RESET;
|
|
/*
|
|
* link the filenode into the list of filenodes.
|
|
* note that the double linking means we can delete a
|
|
* filenode without searching for where it belongs.
|
|
*/
|
|
temp->next = fn_head->next;
|
|
if (temp->next != NULL)
|
|
temp->next->last = temp;
|
|
temp->last = fn_head;
|
|
fn_head->next = temp;
|
|
return (temp);
|
|
}
|
|
|
|
/*
|
|
* add a requirement to a filenode.
|
|
*/
|
|
void
|
|
add_require(fnode, s)
|
|
filenode *fnode;
|
|
char *s;
|
|
{
|
|
Hash_Entry *entry;
|
|
f_reqnode *rnode;
|
|
int new;
|
|
|
|
entry = Hash_CreateEntry(provide_hash, s, &new);
|
|
if (new)
|
|
Hash_SetValue(entry, NULL);
|
|
rnode = emalloc(sizeof(*rnode));
|
|
rnode->entry = entry;
|
|
rnode->next = fnode->req_list;
|
|
fnode->req_list = rnode;
|
|
}
|
|
|
|
/*
|
|
* add a provision to a filenode. if this provision doesn't
|
|
* have a head node, create one here.
|
|
*/
|
|
void
|
|
add_provide(fnode, s)
|
|
filenode *fnode;
|
|
char *s;
|
|
{
|
|
Hash_Entry *entry;
|
|
f_provnode *f_pnode;
|
|
provnode *pnode, *head;
|
|
int new;
|
|
|
|
entry = Hash_CreateEntry(provide_hash, s, &new);
|
|
head = Hash_GetValue(entry);
|
|
|
|
/* create a head node if necessary. */
|
|
if (head == NULL) {
|
|
head = emalloc(sizeof(*head));
|
|
head->head = SET;
|
|
head->in_progress = RESET;
|
|
head->fnode = NULL;
|
|
head->last = head->next = NULL;
|
|
Hash_SetValue(entry, head);
|
|
}
|
|
#if 0
|
|
/*
|
|
* Don't warn about this. We want to be able to support
|
|
* scripts that do two complex things:
|
|
*
|
|
* - Two independent scripts which both provide the
|
|
* same thing. Both scripts must be executed in
|
|
* any order to meet the barrier. An example:
|
|
*
|
|
* Script 1:
|
|
*
|
|
* PROVIDE: mail
|
|
* REQUIRE: LOGIN
|
|
*
|
|
* Script 2:
|
|
*
|
|
* PROVIDE: mail
|
|
* REQUIRE: LOGIN
|
|
*
|
|
* - Two interdependent scripts which both provide the
|
|
* same thing. Both scripts must be executed in
|
|
* graph order to meet the barrier. An example:
|
|
*
|
|
* Script 1:
|
|
*
|
|
* PROVIDE: nameservice dnscache
|
|
* REQUIRE: SERVERS
|
|
*
|
|
* Script 2:
|
|
*
|
|
* PROVIDE: nameservice nscd
|
|
* REQUIRE: dnscache
|
|
*/
|
|
else if (new == 0) {
|
|
warnx("file `%s' provides `%s'.", fnode->filename, s);
|
|
warnx("\tpreviously seen in `%s'.",
|
|
head->next->fnode->filename);
|
|
}
|
|
#endif
|
|
|
|
pnode = emalloc(sizeof(*pnode));
|
|
pnode->head = RESET;
|
|
pnode->in_progress = RESET;
|
|
pnode->fnode = fnode;
|
|
pnode->next = head->next;
|
|
pnode->last = head;
|
|
head->next = pnode;
|
|
if (pnode->next != NULL)
|
|
pnode->next->last = pnode;
|
|
|
|
f_pnode = emalloc(sizeof(*f_pnode));
|
|
f_pnode->pnode = pnode;
|
|
f_pnode->next = fnode->prov_list;
|
|
fnode->prov_list = f_pnode;
|
|
}
|
|
|
|
/*
|
|
* put the BEFORE: lines to a list and handle them later.
|
|
*/
|
|
void
|
|
add_before(fnode, s)
|
|
filenode *fnode;
|
|
char *s;
|
|
{
|
|
strnodelist *bf_ent;
|
|
|
|
bf_ent = emalloc(sizeof *bf_ent + strlen(s));
|
|
bf_ent->node = fnode;
|
|
strcpy(bf_ent->s, s);
|
|
bf_ent->next = bl_list;
|
|
bl_list = bf_ent;
|
|
}
|
|
|
|
/*
|
|
* add a key to a filenode.
|
|
*/
|
|
void
|
|
add_keyword(fnode, s)
|
|
filenode *fnode;
|
|
char *s;
|
|
{
|
|
|
|
strnode_add(&fnode->keyword_list, s, fnode);
|
|
}
|
|
|
|
/*
|
|
* loop over the rest of a REQUIRE line, giving each word to
|
|
* add_require() to do the real work.
|
|
*/
|
|
void
|
|
parse_require(node, buffer)
|
|
filenode *node;
|
|
char *buffer;
|
|
{
|
|
char *s;
|
|
|
|
while ((s = strsep(&buffer, " \t\n")) != NULL)
|
|
if (*s != '\0')
|
|
add_require(node, s);
|
|
}
|
|
|
|
/*
|
|
* loop over the rest of a PROVIDE line, giving each word to
|
|
* add_provide() to do the real work.
|
|
*/
|
|
void
|
|
parse_provide(node, buffer)
|
|
filenode *node;
|
|
char *buffer;
|
|
{
|
|
char *s;
|
|
|
|
while ((s = strsep(&buffer, " \t\n")) != NULL)
|
|
if (*s != '\0')
|
|
add_provide(node, s);
|
|
}
|
|
|
|
/*
|
|
* loop over the rest of a BEFORE line, giving each word to
|
|
* add_before() to do the real work.
|
|
*/
|
|
void
|
|
parse_before(node, buffer)
|
|
filenode *node;
|
|
char *buffer;
|
|
{
|
|
char *s;
|
|
|
|
while ((s = strsep(&buffer, " \t\n")) != NULL)
|
|
if (*s != '\0')
|
|
add_before(node, s);
|
|
}
|
|
|
|
/*
|
|
* loop over the rest of a KEYWORD line, giving each word to
|
|
* add_keyword() to do the real work.
|
|
*/
|
|
void
|
|
parse_keywords(node, buffer)
|
|
filenode *node;
|
|
char *buffer;
|
|
{
|
|
char *s;
|
|
|
|
while ((s = strsep(&buffer, " \t\n")) != NULL)
|
|
if (*s != '\0')
|
|
add_keyword(node, s);
|
|
}
|
|
|
|
/*
|
|
* given a file name, create a filenode for it, read in lines looking
|
|
* for provision and requirement lines, building the graphs as needed.
|
|
*/
|
|
void
|
|
crunch_file(filename)
|
|
char *filename;
|
|
{
|
|
FILE *fp;
|
|
char *buf;
|
|
int require_flag, provide_flag, before_flag, keywords_flag;
|
|
enum { BEFORE_PARSING, PARSING, PARSING_DONE } state;
|
|
filenode *node;
|
|
char delims[3] = { '\\', '\\', '\0' };
|
|
struct stat st;
|
|
|
|
if ((fp = fopen(filename, "r")) == NULL) {
|
|
warn("could not open %s", filename);
|
|
return;
|
|
}
|
|
|
|
if (fstat(fileno(fp), &st) == -1) {
|
|
warn("could not stat %s", filename);
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
|
|
if (!S_ISREG(st.st_mode)) {
|
|
#if 0
|
|
warnx("%s is not a file", filename);
|
|
#endif
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
|
|
node = filenode_new(filename);
|
|
|
|
/*
|
|
* we don't care about length, line number, don't want # for comments,
|
|
* and have no flags.
|
|
*/
|
|
for (state = BEFORE_PARSING; state != PARSING_DONE &&
|
|
(buf = fparseln(fp, NULL, NULL, delims, 0)) != NULL; free(buf)) {
|
|
require_flag = provide_flag = before_flag = keywords_flag = 0;
|
|
if (strncmp(REQUIRE_STR, buf, REQUIRE_LEN) == 0)
|
|
require_flag = REQUIRE_LEN;
|
|
else if (strncmp(REQUIRES_STR, buf, REQUIRES_LEN) == 0)
|
|
require_flag = REQUIRES_LEN;
|
|
else if (strncmp(PROVIDE_STR, buf, PROVIDE_LEN) == 0)
|
|
provide_flag = PROVIDE_LEN;
|
|
else if (strncmp(PROVIDES_STR, buf, PROVIDES_LEN) == 0)
|
|
provide_flag = PROVIDES_LEN;
|
|
else if (strncmp(BEFORE_STR, buf, BEFORE_LEN) == 0)
|
|
before_flag = BEFORE_LEN;
|
|
else if (strncmp(KEYWORD_STR, buf, KEYWORD_LEN) == 0)
|
|
keywords_flag = KEYWORD_LEN;
|
|
else if (strncmp(KEYWORDS_STR, buf, KEYWORDS_LEN) == 0)
|
|
keywords_flag = KEYWORDS_LEN;
|
|
else {
|
|
if (state == PARSING)
|
|
state = PARSING_DONE;
|
|
continue;
|
|
}
|
|
|
|
state = PARSING;
|
|
if (require_flag)
|
|
parse_require(node, buf + require_flag);
|
|
else if (provide_flag)
|
|
parse_provide(node, buf + provide_flag);
|
|
else if (before_flag)
|
|
parse_before(node, buf + before_flag);
|
|
else if (keywords_flag)
|
|
parse_keywords(node, buf + keywords_flag);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
Hash_Entry *
|
|
make_fake_provision(node)
|
|
filenode *node;
|
|
{
|
|
Hash_Entry *entry;
|
|
f_provnode *f_pnode;
|
|
provnode *head, *pnode;
|
|
static int i = 0;
|
|
int new;
|
|
char buffer[30];
|
|
|
|
do {
|
|
snprintf(buffer, sizeof buffer, "fake_prov_%08d", i++);
|
|
entry = Hash_CreateEntry(provide_hash, buffer, &new);
|
|
} while (new == 0);
|
|
head = emalloc(sizeof(*head));
|
|
head->head = SET;
|
|
head->in_progress = RESET;
|
|
head->fnode = NULL;
|
|
head->last = head->next = NULL;
|
|
Hash_SetValue(entry, head);
|
|
|
|
pnode = emalloc(sizeof(*pnode));
|
|
pnode->head = RESET;
|
|
pnode->in_progress = RESET;
|
|
pnode->fnode = node;
|
|
pnode->next = head->next;
|
|
pnode->last = head;
|
|
head->next = pnode;
|
|
if (pnode->next != NULL)
|
|
pnode->next->last = pnode;
|
|
|
|
f_pnode = emalloc(sizeof(*f_pnode));
|
|
f_pnode->pnode = pnode;
|
|
f_pnode->next = node->prov_list;
|
|
node->prov_list = f_pnode;
|
|
|
|
return (entry);
|
|
}
|
|
|
|
/*
|
|
* go through the BEFORE list, inserting requirements into the graph(s)
|
|
* as required. in the before list, for each entry B, we have a file F
|
|
* and a string S. we create a "fake" provision (P) that F provides.
|
|
* for each entry in the provision list for S, add a requirement to
|
|
* that provisions filenode for P.
|
|
*/
|
|
void
|
|
insert_before()
|
|
{
|
|
Hash_Entry *entry, *fake_prov_entry;
|
|
provnode *pnode;
|
|
f_reqnode *rnode;
|
|
strnodelist *bl;
|
|
int new;
|
|
|
|
while (bl_list != NULL) {
|
|
bl = bl_list->next;
|
|
|
|
fake_prov_entry = make_fake_provision(bl_list->node);
|
|
|
|
entry = Hash_CreateEntry(provide_hash, bl_list->s, &new);
|
|
if (new == 1)
|
|
warnx("file `%s' is before unknown provision `%s'", bl_list->node->filename, bl_list->s);
|
|
|
|
for (pnode = Hash_GetValue(entry); pnode; pnode = pnode->next) {
|
|
if (pnode->head)
|
|
continue;
|
|
|
|
rnode = emalloc(sizeof(*rnode));
|
|
rnode->entry = fake_prov_entry;
|
|
rnode->next = pnode->fnode->req_list;
|
|
pnode->fnode->req_list = rnode;
|
|
}
|
|
|
|
free(bl_list);
|
|
bl_list = bl;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* loop over all the files calling crunch_file() on them to do the
|
|
* real work. after we have built all the nodes, insert the BEFORE:
|
|
* lines into graph(s).
|
|
*/
|
|
void
|
|
crunch_all_files()
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < file_count; i++)
|
|
crunch_file(file_list[i]);
|
|
insert_before();
|
|
}
|
|
|
|
/*
|
|
* below are the functions that traverse the graphs we have built
|
|
* finding out the desired ordering, printing each file in turn.
|
|
* if missing requirements, or cyclic graphs are detected, a
|
|
* warning will be issued, and we will continue on..
|
|
*/
|
|
|
|
/*
|
|
* given a requirement node (in a filename) we attempt to satisfy it.
|
|
* we do some sanity checking first, to ensure that we have providers,
|
|
* aren't already satisfied and aren't already being satisfied (ie,
|
|
* cyclic). if we pass all this, we loop over the provision list
|
|
* calling do_file() (enter recursion) for each filenode in this
|
|
* provision.
|
|
*/
|
|
void
|
|
satisfy_req(rnode, filename)
|
|
f_reqnode *rnode;
|
|
char *filename;
|
|
{
|
|
Hash_Entry *entry;
|
|
provnode *head;
|
|
|
|
entry = rnode->entry;
|
|
head = Hash_GetValue(entry);
|
|
|
|
if (head == NULL) {
|
|
warnx("requirement `%s' in file `%s' has no providers.",
|
|
Hash_GetKey(entry), filename);
|
|
exit_code = 1;
|
|
return;
|
|
}
|
|
|
|
/* return if the requirement is already satisfied. */
|
|
if (head->next == NULL)
|
|
return;
|
|
|
|
/*
|
|
* if list is marked as in progress,
|
|
* print that there is a circular dependency on it and abort
|
|
*/
|
|
if (head->in_progress == SET) {
|
|
warnx("Circular dependency on provision `%s' in file `%s'.",
|
|
Hash_GetKey(entry), filename);
|
|
exit_code = 1;
|
|
return;
|
|
}
|
|
|
|
head->in_progress = SET;
|
|
|
|
/*
|
|
* while provision_list is not empty
|
|
* do_file(first_member_of(provision_list));
|
|
*/
|
|
while (head->next != NULL)
|
|
do_file(head->next->fnode);
|
|
}
|
|
|
|
int
|
|
skip_ok(fnode)
|
|
filenode *fnode;
|
|
{
|
|
strnodelist *s;
|
|
strnodelist *k;
|
|
|
|
for (s = skip_list; s; s = s->next)
|
|
for (k = fnode->keyword_list; k; k = k->next)
|
|
if (strcmp(k->s, s->s) == 0)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
keep_ok(fnode)
|
|
filenode *fnode;
|
|
{
|
|
strnodelist *s;
|
|
strnodelist *k;
|
|
|
|
for (s = keep_list; s; s = s->next)
|
|
for (k = fnode->keyword_list; k; k = k->next)
|
|
if (strcmp(k->s, s->s) == 0)
|
|
return (1);
|
|
|
|
/* an empty keep_list means every one */
|
|
return (!keep_list);
|
|
}
|
|
|
|
/*
|
|
* given a filenode, we ensure we are not a cyclic graph. if this
|
|
* is ok, we loop over the filenodes requirements, calling satisfy_req()
|
|
* for each of them.. once we have done this, remove this filenode
|
|
* from each provision table, as we are now done.
|
|
*/
|
|
void
|
|
do_file(fnode)
|
|
filenode *fnode;
|
|
{
|
|
f_reqnode *r, *r_tmp;
|
|
f_provnode *p, *p_tmp;
|
|
provnode *pnode;
|
|
int was_set;
|
|
|
|
DPRINTF((stderr, "do_file on %s.\n", fnode->filename));
|
|
|
|
/*
|
|
* if fnode is marked as in progress,
|
|
* print that fnode; is circularly depended upon and abort.
|
|
*/
|
|
if (fnode->in_progress == SET) {
|
|
warnx("Circular dependency on file `%s'.",
|
|
fnode->filename);
|
|
was_set = exit_code = 1;
|
|
} else
|
|
was_set = 0;
|
|
|
|
/* mark fnode */
|
|
fnode->in_progress = SET;
|
|
|
|
/*
|
|
* for each requirement of fnode -> r
|
|
* satisfy_req(r, filename)
|
|
*/
|
|
r = fnode->req_list;
|
|
while (r != NULL) {
|
|
r_tmp = r;
|
|
satisfy_req(r, fnode->filename);
|
|
r = r->next;
|
|
free(r_tmp);
|
|
}
|
|
fnode->req_list = NULL;
|
|
|
|
/*
|
|
* for each provision of fnode -> p
|
|
* remove fnode from provision list for p in hash table
|
|
*/
|
|
p = fnode->prov_list;
|
|
while (p != NULL) {
|
|
p_tmp = p;
|
|
pnode = p->pnode;
|
|
if (pnode->next != NULL) {
|
|
pnode->next->last = pnode->last;
|
|
}
|
|
if (pnode->last != NULL) {
|
|
pnode->last->next = pnode->next;
|
|
}
|
|
free(pnode);
|
|
p = p->next;
|
|
free(p_tmp);
|
|
}
|
|
fnode->prov_list = NULL;
|
|
|
|
/* do_it(fnode) */
|
|
DPRINTF((stderr, "next do: "));
|
|
|
|
/* if we were already in progress, don't print again */
|
|
if (was_set == 0 && skip_ok(fnode) && keep_ok(fnode))
|
|
printf("%s\n", fnode->filename);
|
|
|
|
if (fnode->next != NULL) {
|
|
fnode->next->last = fnode->last;
|
|
}
|
|
if (fnode->last != NULL) {
|
|
fnode->last->next = fnode->next;
|
|
}
|
|
|
|
DPRINTF((stderr, "nuking %s\n", fnode->filename));
|
|
free(fnode->filename);
|
|
free(fnode);
|
|
}
|
|
|
|
void
|
|
generate_ordering()
|
|
{
|
|
|
|
/*
|
|
* while there remain undone files{f},
|
|
* pick an arbitrary f, and do_file(f)
|
|
* Note that the first file in the file list is perfectly
|
|
* arbitrary, and easy to find, so we use that.
|
|
*/
|
|
|
|
/*
|
|
* N.B.: the file nodes "self delete" after they execute, so
|
|
* after each iteration of the loop, the head will be pointing
|
|
* to something totally different. The loop ends up being
|
|
* executed only once for every strongly connected set of
|
|
* nodes.
|
|
*/
|
|
while (fn_head->next != NULL) {
|
|
DPRINTF((stderr, "generate on %s\n", fn_head->next->filename));
|
|
do_file(fn_head->next);
|
|
}
|
|
}
|