562 lines
13 KiB
C
562 lines
13 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2005, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* xundump.c: Load back xdump output
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*
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* Known contributors to this file:
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* Ron Koenderink, 2005
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* Markus Armbruster, 2005
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*/
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/* FIXME normalize terminology: table/rows/columns or file/records/fields */
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdarg.h>
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#include <time.h>
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#include "prototypes.h"
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#include "file.h"
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#include "nsc.h"
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#include "match.h"
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#define MAX_NUM_COLUMNS 256
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static char *fname = "";
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static int lineno = 0;
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/*
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* TODO
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* This structure could be replaced with struct valstr.
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*/
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enum enum_value {
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VAL_NOTUSED,
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VAL_STRING,
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VAL_SYMBOL,
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VAL_SYMBOL_SET,
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VAL_DOUBLE
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};
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struct value {
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enum enum_value v_type;
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union {
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char *v_string;
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double v_double;
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} v_field;
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};
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static int gripe(char *fmt, ...) ATTRIBUTE((format (printf, 1, 2)));
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static int
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gripe(char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "%s:%d: ", fname, lineno);
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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putc('\n', stderr);
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return -1;
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}
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static int
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skipfs(FILE *fp)
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{
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int ch;
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do {
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ch = getc(fp);
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} while (ch == ' ' || ch == '\t');
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if (ch == '#') {
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do {
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ch = getc(fp);
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} while (ch != EOF && ch != '\n');
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}
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return ch;
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}
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static int
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getid(FILE *fp, char *buf)
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{
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int n;
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if (fscanf(fp, "%1023[^#() \t\n]%n", buf, &n) != 1 || !isalpha(buf[0]))
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return -1;
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return n;
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}
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static char *
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xuesc(char *buf)
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{
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char *src, *dst;
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int octal_chr, n;
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dst = buf;
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src = buf;
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while (*src) {
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if (*src == '\\') {
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if (sscanf(++src, "%3o%n", &octal_chr, &n) != 1 || n != 3)
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return NULL;
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*dst++ = (char)octal_chr;
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src += 3;
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} else
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*dst++ = *src++;
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}
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*dst = '\0';
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return buf;
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}
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static int
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xuflds(FILE *fp, struct value values[])
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{
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int i, ch;
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char buf[1024];
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char *p;
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int len, l1;
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for (i = 0; ; i++) {
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values[i].v_type = VAL_NOTUSED;
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if (i >= MAX_NUM_COLUMNS)
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return gripe("Too many columns");
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ch = skipfs(fp);
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switch (ch) {
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case EOF:
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return gripe("Unexpected EOF");
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case '\n':
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return i;
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case '+': case '-': case '.':
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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ungetc(ch, fp);
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if (fscanf(fp, "%lg", &values[i].v_field.v_double) != 1)
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return gripe("Malformed number in field %d", i + 1);
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values[i].v_type = VAL_DOUBLE;
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break;
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case '"':
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ch = getc(fp);
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if (ch == '"')
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buf[0] = 0;
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else {
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ungetc(ch, fp);
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if (fscanf(fp, "%1023[^\"\n]", buf) != 1 || getc(fp) != '"')
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return gripe("Malformed string in field %d", i + 1);
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if (!xuesc(buf))
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return gripe("Invalid escape sequence in field %d",
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i + 1);
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}
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values[i].v_type = VAL_STRING;
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values[i].v_field.v_string = strdup(buf);
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break;
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case '(':
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p = strdup("");
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len = 0;
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for (;;) {
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ch = skipfs(fp);
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if (ch == EOF || ch == '\n')
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return gripe("Unmatched '(' in field %d", i + 1);
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if (ch == ')')
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break;
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ungetc(ch, fp);
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l1 = getid(fp, buf);
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if (l1 < 0)
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return gripe("Junk in field %d", i + 1);
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p = realloc(p, len + l1 + 2);
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strcpy(p + len, buf);
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strcpy(p + len + l1, " ");
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len += l1 + 1;
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}
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if (len)
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p[len - 1] = 0;
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values[i].v_type = VAL_SYMBOL_SET;
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values[i].v_field.v_string = p;
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break;
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default:
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ungetc(ch, fp);
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if (getid(fp, buf) < 0) {
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return gripe("Junk in field %d", i + 1);
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}
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if (!strcmp(buf, "nil")) {
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values[i].v_type = VAL_STRING;
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values[i].v_field.v_string = NULL;
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}
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else {
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values[i].v_type = VAL_SYMBOL;
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values[i].v_field.v_string = strdup(buf);
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}
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}
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ch = getc(fp);
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if (ch == '\n')
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ungetc(ch, fp);
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else if (ch != ' ' && ch != '\t')
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return gripe("Bad field separator after field %d", i + 1);
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}
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}
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static void
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freeflds(struct value values[])
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{
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struct value *vp;
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for (vp = values; vp->v_type != VAL_NOTUSED; vp++) {
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if (vp->v_type != VAL_DOUBLE)
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free(vp->v_field.v_string);
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}
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}
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static int
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xunsymbol1(char *id, struct symbol *symtab, struct castr *ca, int n)
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{
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int i = stmtch(id, symtab, offsetof(struct symbol, name),
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sizeof(struct symbol));
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if (i < 0)
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return gripe("%s %s symbol `%s' in field %d",
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i == M_NOTUNIQUE ? "Ambiguous" : "Unknown",
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ca->ca_name, id, n);
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return i;
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}
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static int
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xunsymbol(struct castr *ca, struct value *vp, int n)
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{
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struct symbol *symtab = (struct symbol *)empfile[ca->ca_table].cache;
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char *buf = vp->v_field.v_string;
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int i;
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int value;
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char *token;
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if (vp->v_type == VAL_SYMBOL_SET) {
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if (!(ca->ca_flags & NSC_BITS) || ca->ca_table == EF_BAD)
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return gripe("%s doesn't take a symbol set in field %d",
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ca->ca_name, n);
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value = 0;
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for (token = strtok(buf, " "); token; token = strtok(NULL, " ")) {
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i = xunsymbol1(token, symtab, ca, n);
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if (i < 0)
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return -1;
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value |= symtab[i].value;
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}
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} else if (vp->v_type == VAL_SYMBOL) {
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if ((ca->ca_flags & NSC_BITS) || ca->ca_table == EF_BAD)
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return gripe("%s doesn't take a symbol in field %d",
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ca->ca_name, n);
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i = xunsymbol1(buf, symtab, ca, n);
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if (i < 0)
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return -1;
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value = symtab[i].value;
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} else
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return 0;
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vp->v_type = VAL_DOUBLE;
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vp->v_field.v_double = value;
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return 0;
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}
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static int
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has_const(struct castr ca[])
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{
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int i;
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for (i = 0; ca[i].ca_name; i++) {
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if (ca[i].ca_flags & NSC_CONST)
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return 1;
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}
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return 0;
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}
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static void
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xuinitrow(int type, int row)
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{
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struct empfile *ep = &empfile[type];
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char *ptr = ep->cache + ep->size * row;
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memset(ptr, 0, ep->size);
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if (ep->init)
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ep->init(row, ptr);
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}
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static int
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xuloadrow(int type, int row, struct value values[])
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{
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int i,j,k;
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struct empfile *ep = &empfile[type];
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char *ptr = ep->cache + ep->size * row;
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struct castr *ca = ep->cadef;
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void *row_ref;
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i = 0;
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j = 0;
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while (ca[i].ca_type != NSC_NOTYPE &&
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values[j].v_type != VAL_NOTUSED) {
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if (ca[i].ca_flags & NSC_EXTRA) {
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i++;
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continue;
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}
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row_ref = (char *)ptr + ca[i].ca_off;
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k = 0;
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do {
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/*
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* TODO
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* factor out NSC_CONST comparsion
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*/
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switch (values[j].v_type) {
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case VAL_SYMBOL:
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case VAL_SYMBOL_SET:
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if (xunsymbol(&ca[i], &values[j], j) < 0)
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return -1;
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/* fall through */
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case VAL_DOUBLE:
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switch (ca[i].ca_type) {
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case NSC_INT:
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if (ca[i].ca_flags & NSC_CONST) {
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if (((int *)row_ref)[k] != (int)
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values[j].v_field.v_double)
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gripe("Field %s must be same, "
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"read %d != expected %d",
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ca[i].ca_name,
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((int *)row_ref)[k],
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(int)values[j].v_field.v_double);
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} else
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((int *)row_ref)[k] =
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(int)values[j].v_field.v_double;
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break;
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case NSC_LONG:
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if (ca[i].ca_flags & NSC_CONST) {
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if (((long *)row_ref)[k] != (long)
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values[j].v_field.v_double)
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gripe("Field %s must be same, "
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"read %ld != expected %ld",
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ca[i].ca_name,
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((long *)row_ref)[k],
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(long)values[j].v_field.v_double);
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} else
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((long *)row_ref)[k] = (long)
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values[j].v_field.v_double;
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break;
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case NSC_USHORT:
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if (ca[i].ca_flags & NSC_CONST) {
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if (((unsigned short *)row_ref)[k] !=
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(unsigned short)values[j].v_field.v_double)
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gripe("Field %s must be same, "
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"read %d != expected %d",
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ca[i].ca_name,
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((unsigned short *)row_ref)[k],
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(unsigned short)values[j].v_field.v_double);
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} else
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((unsigned short *)row_ref)[k] = (unsigned short)
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values[j].v_field.v_double;
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break;
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case NSC_UCHAR:
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if (ca[i].ca_flags & NSC_CONST) {
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if (((unsigned char *)row_ref)[k] != (unsigned char)
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values[j].v_field.v_double)
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gripe("Field %s must be same, "
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"read %d != expected %d",
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ca[i].ca_name,
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((unsigned char *)row_ref)[k],
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(unsigned char)values[j].v_field.v_double);
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} else
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((unsigned char *)row_ref)[k] = (unsigned char)
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values[j].v_field.v_double;
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break;
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case NSC_FLOAT:
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if (ca[i].ca_flags & NSC_CONST) {
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if (((float *)row_ref)[k] != (float)
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values[j].v_field.v_double)
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gripe("Field %s must be same, "
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"read %g != expected %g",
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ca[i].ca_name,
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((float *)row_ref)[k],
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(float)values[j].v_field.v_double);
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} else
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((float *)row_ref)[k] = (float)
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values[j].v_field.v_double;
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break;
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case NSC_STRING:
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return gripe("Field %s is a string type, "
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"but %lg was read which is a number",
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ca[i].ca_name, values[j].v_field.v_double);
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default:
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return gripe("Field %s's type %d is not supported",
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ca[i].ca_name, ca[i].ca_type);
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}
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break;
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case VAL_STRING:
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switch(ca[i].ca_type) {
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case NSC_STRING:
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if (ca[i].ca_flags & NSC_CONST) {
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if (strcmp(((char **)row_ref)[k],
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values[j].v_field.v_string) != 0)
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gripe("Field %s must be same, "
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"read %s != expected %s",
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ca[i].ca_name,
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((char **)row_ref)[k],
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values[j].v_field.v_string);
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} else
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((char **)row_ref)[k]
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= strdup(values[j].v_field.v_string);
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break;
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case NSC_INT:
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case NSC_LONG:
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case NSC_USHORT:
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case NSC_UCHAR:
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case NSC_FLOAT:
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return gripe("Field %s is a number type %d, "
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"but %s was read which is a string",
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ca[i].ca_name, ca[i].ca_type,
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values[j].v_field.v_string);
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default:
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return gripe("Field %s's type %d is not supported",
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ca[i].ca_name, ca[i].ca_type);
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}
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break;
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case VAL_NOTUSED:
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return gripe("Missing column %s in file", ca[i].ca_name);
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default:
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return gripe("Unknown value type %d", values[j].v_type);
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}
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k++;
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j++;
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} while (k < ca[i].ca_len);
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i++;
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}
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if (ca[i].ca_type != NSC_NOTYPE)
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return gripe("Missing column %s in file", ca[i].ca_name);
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switch (values[j].v_type) {
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case VAL_NOTUSED:
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break;
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case VAL_STRING:
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case VAL_SYMBOL:
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case VAL_SYMBOL_SET:
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return gripe("Extra junk after the last column, read %s",
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values[j].v_field.v_string);
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case VAL_DOUBLE:
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return gripe("Extra junk after the last column, read %lg",
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values[j].v_field.v_double);
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default:
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return gripe("Extra junk after the last column, "
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"unknown value type %d", values[j].v_type);
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}
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return 0;
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}
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int
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xundump(FILE *fp, char *file, int expected_table)
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{
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char name[64];
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struct empfile *ep;
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int row, res, rows, ch;
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struct value values[MAX_NUM_COLUMNS + 1];
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int type;
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int fixed_rows, need_sentinel;
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if (strcmp(fname, file) != 0) {
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fname = file;
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lineno = 1;
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} else
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lineno++;
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while ((ch = skipfs(fp)) == '\n')
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lineno++;
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if (ch == EOF && expected_table == EF_BAD)
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return -1;
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ungetc(ch, fp);
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res = -1;
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if (fscanf(fp, "XDUMP%*[ \t]%63[^ \t#\n]%*[ \t]%*[^ \t#\n]%n",
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name, &res) != 1
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|| res < 0)
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return gripe("Expected XDUMP header");
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if (skipfs(fp) != '\n')
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return gripe("Junk after XDUMP header");
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type = ef_byname(name);
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if (type < 0)
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return gripe("Unknown table `%s'", name);
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ep = &empfile[type];
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if (CANT_HAPPEN(!(ep->flags & EFF_MEM)))
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return -1; /* not implemented */
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if (expected_table != EF_BAD && expected_table != type)
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return gripe("Expected table `%s', not `%s'",
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ef_nameof(expected_table), name);
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fixed_rows = has_const(ef_cadef(type));
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need_sentinel = !fixed_rows; /* FIXME only approximation */
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for (row = 0; ; row++) {
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lineno++;
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ch = skipfs(fp);
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if (ch == '/')
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break;
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ungetc(ch, fp);
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/*
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* TODO
|
|
* Add column count check to the return value of xuflds()
|
|
*/
|
|
res = xuflds(fp, values);
|
|
if (res > 0 && row >= ep->csize - 1) {
|
|
/* TODO grow cache unless EFF_STATIC */
|
|
gripe("Too many rows for table %s", name);
|
|
res = -1;
|
|
}
|
|
if (res > 0) {
|
|
if (!fixed_rows)
|
|
xuinitrow(type, row);
|
|
res = xuloadrow(type, row, values);
|
|
}
|
|
freeflds(values);
|
|
if (res < 0)
|
|
return -1;
|
|
}
|
|
|
|
ch = getc(fp);
|
|
ungetc(ch, fp);
|
|
if (!isdigit(ch) || fscanf(fp, "%d", &rows) != 1)
|
|
return gripe("Malformed table footer");
|
|
if (skipfs(fp) != '\n')
|
|
return gripe("Junk after table footer");
|
|
if (row != rows)
|
|
return gripe("Read %d rows, which doesn't match footer",
|
|
row);
|
|
if (fixed_rows && row != ep->csize -1)
|
|
return gripe("Table %s requires %d rows, got %d",
|
|
name, ep->csize - 1, row);
|
|
if (need_sentinel)
|
|
xuinitrow(type, row);
|
|
|
|
ep->fids = ep->cids = row;
|
|
return type;
|
|
}
|