378 lines
8.1 KiB
C
378 lines
8.1 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <sys/queue.h>
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#include <sys/sbuf.h>
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#include <err.h>
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#include <bsdxml.h>
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FILE *fsubs;
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struct node {
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LIST_HEAD(, node) children;
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LIST_ENTRY(node) siblings;
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struct node *parent;
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const char *name;
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struct sbuf *cont;
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struct sbuf *key;
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char *id;
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char *ref;
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};
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struct mytree {
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struct node *top;
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struct node *cur;
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int indent;
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int ignore;
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};
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struct ref {
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LIST_ENTRY(ref) next;
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char *k1;
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char *k2;
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};
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LIST_HEAD(, ref) refs = LIST_HEAD_INITIALIZER(&refs);
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static struct node *
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new_node(void)
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{
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struct node *np;
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np = calloc(1, sizeof *np);
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np->cont = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
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sbuf_clear(np->cont);
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np->key = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
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sbuf_clear(np->key);
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LIST_INIT(&np->children);
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return (np);
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}
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static void
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indent(int n)
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{
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printf("%*.*s", n, n, "");
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}
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static void
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StartElement(void *userData, const char *name, const char **attr)
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{
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struct mytree *mt;
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struct node *np;
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int i;
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mt = userData;
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if (!strcmp(name, "FreeBSD")) {
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mt->ignore = 1;
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return;
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}
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mt->ignore = 0;
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mt->indent += 2;
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np = new_node();
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for (i = 0; attr[i]; i += 2) {
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if (!strcmp(attr[i], "id"))
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np->id = strdup(attr[i+1]);
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else if (!strcmp(attr[i], "ref"))
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np->ref = strdup(attr[i+1]);
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}
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np->name = strdup(name);
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sbuf_cat(np->key, name);
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sbuf_cat(np->key, "::");
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np->parent = mt->cur;
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LIST_INSERT_HEAD(&mt->cur->children, np, siblings);
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mt->cur = np;
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}
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static void
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EndElement(void *userData, const char *name __unused)
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{
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struct mytree *mt;
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struct node *np;
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mt = userData;
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if (mt->ignore)
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return;
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mt->indent -= 2;
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sbuf_finish(mt->cur->cont);
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LIST_FOREACH(np, &mt->cur->children, siblings) {
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if (strcmp(np->name, "name"))
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continue;
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sbuf_cat(mt->cur->key, sbuf_data(np->cont));
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break;
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}
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sbuf_finish(mt->cur->key);
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mt->cur = mt->cur->parent;
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}
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static void
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CharData(void *userData , const XML_Char *s , int len)
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{
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struct mytree *mt;
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const char *b, *e;
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mt = userData;
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if (mt->ignore)
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return;
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b = s;
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e = s + len - 1;
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while (isspace(*b) && b < e)
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b++;
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while (isspace(*e) && e > b)
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e--;
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if (e != b || *b)
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sbuf_bcat(mt->cur->cont, b, e - b + 1);
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}
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static struct mytree *
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dofile(char *filename)
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{
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XML_Parser parser;
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struct mytree *mt;
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struct stat st;
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int fd;
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char *p;
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int i;
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parser = XML_ParserCreate(NULL);
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mt = calloc(1, sizeof *mt);
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mt->top = new_node();
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mt->top->name = "(top)";
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mt->top->parent = mt->top;
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mt->cur = mt->top;
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sbuf_finish(mt->top->key);
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sbuf_finish(mt->top->cont);
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XML_SetUserData(parser, mt);
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XML_SetElementHandler(parser, StartElement, EndElement);
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XML_SetCharacterDataHandler(parser, CharData);
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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err(1, filename);
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fstat(fd, &st);
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p = mmap(NULL, st.st_size, PROT_READ, MAP_NOCORE|MAP_PRIVATE, fd, 0);
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i = XML_Parse(parser, p, st.st_size, 1);
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if (i != 1)
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errx(1, "XML_Parse complained -> %d", i);
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munmap(p, st.st_size);
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close(fd);
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XML_ParserFree(parser);
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sbuf_finish(mt->top->cont);
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if (i)
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return (mt);
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else
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return (NULL);
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}
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static void
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print_node(struct node *np)
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{
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printf("\"%s\" -- \"%s\" -- \"%s\"", np->name, sbuf_data(np->cont), sbuf_data(np->key));
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if (np->id)
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printf(" id=\"%s\"", np->id);
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if (np->ref)
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printf(" ref=\"%s\"", np->ref);
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printf("\n");
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}
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static void
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print_tree(struct node *np, int n)
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{
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struct node *np1;
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indent(n); printf("%s id=%s ref=%s\n", np->name, np->id, np->ref);
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LIST_FOREACH(np1, &np->children, siblings)
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print_tree(np1, n + 2);
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}
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static void
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sort_node(struct node *np)
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{
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struct node *np1, *np2;
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int n;
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LIST_FOREACH(np1, &np->children, siblings)
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sort_node(np1);
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do {
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np1 = LIST_FIRST(&np->children);
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n = 0;
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for (;;) {
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if (np1 == NULL)
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return;
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np2 = LIST_NEXT(np1, siblings);
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if (np2 == NULL)
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return;
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if (strcmp(sbuf_data(np1->key), sbuf_data(np2->key)) > 0) {
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LIST_REMOVE(np2, siblings);
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LIST_INSERT_BEFORE(np1, np2, siblings);
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n++;
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break;
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}
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np1 = np2;
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}
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} while (n);
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}
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static int
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refcmp(char *r1, char *r2)
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{
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struct ref *r;
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LIST_FOREACH(r, &refs, next) {
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if (!strcmp(r1, r->k1))
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return (strcmp(r2, r->k2));
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}
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r = calloc(1, sizeof(*r));
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r->k1 = strdup(r1);
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r->k2 = strdup(r2);
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LIST_INSERT_HEAD(&refs, r, next);
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if (fsubs != NULL) {
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fprintf(fsubs, "s/%s/%s/g\n", r1, r2);
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fflush(fsubs);
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}
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return (0);
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}
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static int compare_node2(struct node *n1, struct node *n2, int in);
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static int
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compare_node(struct node *n1, struct node *n2, int in)
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{
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int i;
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struct node *n1a, *n2a;
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i = strcmp(n1->name, n2->name);
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if (i)
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return (i);
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if (n1->id && n2->id)
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i = refcmp(n1->id, n2->id);
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else if (n1->id || n2->id)
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i = -1;
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if (i)
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return (i);
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if (n1->ref && n2->ref)
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i = refcmp(n1->ref, n2->ref);
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else if (n1->ref || n2->ref)
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i = -1;
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if (i)
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return (i);
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if (!strcmp(n1->name, "ref"))
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i = refcmp(sbuf_data(n1->cont), sbuf_data(n2->cont));
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else
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i = strcmp(sbuf_data(n1->cont), sbuf_data(n2->cont));
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if (i)
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return (1);
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n1a = LIST_FIRST(&n1->children);
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n2a = LIST_FIRST(&n2->children);
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for (;;) {
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if (n1a == NULL && n2a == NULL)
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return (0);
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if (n1a != NULL && n2a == NULL) {
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printf("1>");
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indent(in);
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print_node(n1a);
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printf("2>\n");
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return (1);
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}
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if (n1a == NULL && n2a != NULL) {
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printf("1>\n");
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printf("2>");
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indent(in);
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print_node(n2a);
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return (1);
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}
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i = compare_node2(n1a, n2a, in + 2);
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if (i)
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return (1);
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n1a = LIST_NEXT(n1a, siblings);
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n2a = LIST_NEXT(n2a, siblings);
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}
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return (0);
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}
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static int
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compare_node2(struct node *n1, struct node *n2, int in)
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{
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int i;
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i = compare_node(n1, n2, in);
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if (i) {
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printf("1>");
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indent(in);
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print_node(n1);
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printf("2>");
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indent(in);
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print_node(n2);
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}
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return (i);
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}
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int
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main(int argc, char **argv)
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{
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struct mytree *t1, *t2;
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int i;
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fsubs = fopen("_.subs", "w");
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setbuf(stdout, NULL);
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setbuf(stderr, NULL);
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if (argc != 3)
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errx(1, "usage: %s file1 file2", argv[0]);
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t1 = dofile(argv[1]);
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if (t1 == NULL)
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errx(2, "XML parser error on file %s", argv[1]);
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sort_node(t1->top);
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t2 = dofile(argv[2]);
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if (t2 == NULL)
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errx(2, "XML parser error on file %s", argv[2]);
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sort_node(t2->top);
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i = compare_node(t1->top, t2->top, 0);
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return (i);
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}
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