freebsd-dev/lib/libgeom/geom_xml2tree.c
2003-02-10 00:11:43 +00:00

429 lines
9.9 KiB
C

/*-
* Copyright (c) 2003 Poul-Henning Kamp
* 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. The names of the authors 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <stdio.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/queue.h>
#include <sys/sbuf.h>
#include <sys/sysctl.h>
#include <err.h>
#include <bsdxml.h>
#include <libgeom.h>
struct mystate {
struct gmesh *mesh;
struct gclass *class;
struct ggeom *geom;
struct gprovider *provider;
struct gconsumer *consumer;
int level;
struct sbuf *sbuf[20];
struct gconf *config;
int nident;
};
static void
StartElement(void *userData, const char *name, const char **attr)
{
struct mystate *mt;
void *id;
void *ref;
int i;
mt = userData;
mt->level++;
mt->sbuf[mt->level] = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
id = NULL;
for (i = 0; attr[i] != NULL; i += 2) {
if (!strcmp(attr[i], "id")) {
id = (void *)strtoul(attr[i + 1], NULL, 0);
mt->nident++;
} else if (!strcmp(attr[i], "ref")) {
ref = (void *)strtoul(attr[i + 1], NULL, 0);
} else
printf("%*.*s[%s = %s]\n",
mt->level + 1, mt->level + 1, "",
attr[i], attr[i + 1]);
}
if (!strcmp(name, "class") && mt->class == NULL) {
mt->class = calloc(1, sizeof *mt->class);
mt->class->id = id;
LIST_INSERT_HEAD(&mt->mesh->class, mt->class, class);
LIST_INIT(&mt->class->geom);
LIST_INIT(&mt->class->config);
return;
}
if (!strcmp(name, "geom") && mt->geom == NULL) {
mt->geom = calloc(1, sizeof *mt->geom);
mt->geom->id = id;
LIST_INSERT_HEAD(&mt->class->geom, mt->geom, geom);
LIST_INIT(&mt->geom->provider);
LIST_INIT(&mt->geom->consumer);
LIST_INIT(&mt->geom->config);
return;
}
if (!strcmp(name, "class") && mt->geom != NULL) {
mt->geom->class = ref;
return;
}
if (!strcmp(name, "consumer") && mt->consumer == NULL) {
mt->consumer = calloc(1, sizeof *mt->consumer);
mt->consumer->id = id;
LIST_INSERT_HEAD(&mt->geom->consumer, mt->consumer, consumer);
LIST_INIT(&mt->consumer->config);
return;
}
if (!strcmp(name, "geom") && mt->consumer != NULL) {
mt->consumer->geom = ref;
return;
}
if (!strcmp(name, "provider") && mt->consumer != NULL) {
mt->consumer->provider = ref;
return;
}
if (!strcmp(name, "provider") && mt->provider == NULL) {
mt->provider = calloc(1, sizeof *mt->provider);
mt->provider->id = id;
LIST_INSERT_HEAD(&mt->geom->provider, mt->provider, provider);
LIST_INIT(&mt->provider->consumers);
LIST_INIT(&mt->provider->config);
return;
}
if (!strcmp(name, "geom") && mt->provider != NULL) {
mt->provider->geom = ref;
return;
}
if (!strcmp(name, "config")) {
if (mt->provider != NULL) {
mt->config = &mt->provider->config;
return;
}
if (mt->consumer != NULL) {
mt->config = &mt->consumer->config;
return;
}
if (mt->geom != NULL) {
mt->config = &mt->geom->config;
return;
}
if (mt->class != NULL) {
mt->config = &mt->class->config;
return;
}
}
}
static void
EndElement(void *userData, const char *name)
{
struct mystate *mt;
struct gconfig *gc;
char *p;
mt = userData;
sbuf_finish(mt->sbuf[mt->level]);
p = strdup(sbuf_data(mt->sbuf[mt->level]));
sbuf_delete(mt->sbuf[mt->level]);
mt->sbuf[mt->level] = NULL;
mt->level--;
if (strlen(p) == 0) {
free(p);
p = NULL;
}
if (!strcmp(name, "name")) {
if (mt->provider != NULL) {
mt->provider->name = p;
return;
} else if (mt->geom != NULL) {
mt->geom->name = p;
return;
} else if (mt->class != NULL) {
mt->class->name = p;
return;
}
}
if (!strcmp(name, "rank") && mt->geom != NULL) {
mt->geom->rank = strtoul(p, NULL, 0);
free(p);
return;
}
if (!strcmp(name, "mode") && mt->provider != NULL) {
mt->provider->mode = p;
return;
}
if (!strcmp(name, "mode") && mt->consumer != NULL) {
mt->consumer->mode = p;
return;
}
if (!strcmp(name, "mediasize") && mt->provider != NULL) {
mt->provider->mediasize = strtoumax(p, NULL, 0);
free(p);
return;
}
if (!strcmp(name, "sectorsize") && mt->provider != NULL) {
mt->provider->sectorsize = strtoul(p, NULL, 0);
free(p);
return;
}
if (!strcmp(name, "config")) {
mt->config = NULL;
return;
}
if (mt->config != NULL) {
gc = calloc(sizeof *gc, 1);
gc->name = strdup(name);
gc->val = p;
LIST_INSERT_HEAD(mt->config, gc, config);
return;
}
if (p != NULL) {
printf("<<<%s>>>\n", p);
free(p);
}
if (!strcmp(name, "consumer") && mt->consumer != NULL) {
mt->consumer = NULL;
return;
}
if (!strcmp(name, "provider") && mt->provider != NULL) {
mt->provider = NULL;
return;
}
if (!strcmp(name, "geom") && mt->consumer != NULL) {
return;
}
if (!strcmp(name, "geom") && mt->provider != NULL) {
return;
}
if (!strcmp(name, "geom") && mt->geom != NULL) {
mt->geom = NULL;
return;
}
if (!strcmp(name, "class") && mt->geom != NULL) {
return;
}
if (!strcmp(name, "class") && mt->class != NULL) {
mt->class = NULL;
return;
}
}
static void
CharData(void *userData , const XML_Char *s , int len)
{
struct mystate *mt;
const char *b, *e;
mt = userData;
b = s;
e = s + len - 1;
while (isspace(*b) && b < e)
b++;
while (isspace(*e) && e > b)
e--;
if (e != b || (*b && !isspace(*b)))
sbuf_bcat(mt->sbuf[mt->level], b, e - b + 1);
}
struct gident *
geom_lookupid(struct gmesh *gmp, void *id)
{
struct gident *gip;
for (gip = gmp->ident; gip->id != NULL; gip++)
if (gip->id == id)
return (gip);
return (NULL);
}
int
geom_xml2tree(struct gmesh *gmp, char *p)
{
XML_Parser parser;
struct mystate *mt;
struct gclass *cl;
struct ggeom *ge;
struct gprovider *pr;
struct gconsumer *co;
int i;
memset(gmp, 0, sizeof *gmp);
LIST_INIT(&gmp->class);
parser = XML_ParserCreate(NULL);
mt = calloc(1, sizeof *mt);
if (mt == NULL)
return (ENOMEM);
mt->mesh = gmp;
XML_SetUserData(parser, mt);
XML_SetElementHandler(parser, StartElement, EndElement);
XML_SetCharacterDataHandler(parser, CharData);
i = XML_Parse(parser, p, strlen(p), 1);
if (i != 1)
return (-1);
XML_ParserFree(parser);
gmp->ident = calloc(sizeof *gmp->ident, mt->nident + 1);
if (gmp->ident == NULL)
return (ENOMEM);
free(mt);
i = 0;
/* Collect all identifiers */
LIST_FOREACH(cl, &gmp->class, class) {
gmp->ident[i].id = cl->id;
gmp->ident[i].ptr = cl;
gmp->ident[i].what = ISCLASS;
i++;
LIST_FOREACH(ge, &cl->geom, geom) {
gmp->ident[i].id = ge->id;
gmp->ident[i].ptr = ge;
gmp->ident[i].what = ISGEOM;
i++;
LIST_FOREACH(pr, &ge->provider, provider) {
gmp->ident[i].id = pr->id;
gmp->ident[i].ptr = pr;
gmp->ident[i].what = ISPROVIDER;
i++;
}
LIST_FOREACH(co, &ge->consumer, consumer) {
gmp->ident[i].id = co->id;
gmp->ident[i].ptr = co;
gmp->ident[i].what = ISCONSUMER;
i++;
}
}
}
/* Substitute all identifiers */
LIST_FOREACH(cl, &gmp->class, class) {
LIST_FOREACH(ge, &cl->geom, geom) {
ge->class = geom_lookupid(gmp, ge->class)->ptr;
LIST_FOREACH(pr, &ge->provider, provider) {
pr->geom = geom_lookupid(gmp, pr->geom)->ptr;
}
LIST_FOREACH(co, &ge->consumer, consumer) {
co->geom = geom_lookupid(gmp, co->geom)->ptr;
if (co->provider != NULL)
co->provider =
geom_lookupid(gmp, co->provider)->ptr;
}
}
}
return (0);
}
int
geom_gettree(struct gmesh *gmp)
{
char *p;
int error;
p = geom_getxml();
error = geom_xml2tree(gmp, p);
free(p);
return (error);
}
static void
delete_config(struct gconf *gp)
{
struct gconfig *cf;
for (;;) {
cf = LIST_FIRST(gp);
if (cf == NULL)
return;
LIST_REMOVE(cf, config);
free(cf->name);
free(cf->val);
free(cf);
}
}
void
geom_deletetree(struct gmesh *gmp)
{
struct gclass *cl;
struct ggeom *ge;
struct gprovider *pr;
struct gconsumer *co;
free(gmp->ident);
gmp->ident = NULL;
for (;;) {
cl = LIST_FIRST(&gmp->class);
if (cl == NULL)
break;
LIST_REMOVE(cl, class);
delete_config(&cl->config);
if (cl->name) free(cl->name);
for (;;) {
ge = LIST_FIRST(&cl->geom);
if (ge == NULL)
break;
LIST_REMOVE(ge, geom);
delete_config(&ge->config);
if (ge->name) free(ge->name);
for (;;) {
pr = LIST_FIRST(&ge->provider);
if (pr == NULL)
break;
LIST_REMOVE(pr, provider);
delete_config(&pr->config);
if (pr->name) free(pr->name);
if (pr->mode) free(pr->mode);
free(pr);
}
for (;;) {
co = LIST_FIRST(&ge->consumer);
if (co == NULL)
break;
LIST_REMOVE(co, consumer);
delete_config(&co->config);
if (co->mode) free(co->mode);
free(co);
}
free(ge);
}
free(cl);
}
}