469 lines
12 KiB
C
469 lines
12 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: Text loading functions based on 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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*
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*/
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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_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
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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 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 sep;
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char buf[1024];
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for (i = 0; i < MAX_NUM_COLUMNS; i++) {
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ch = getc(fp);
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ungetc(ch, fp);
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switch (ch) {
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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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if (fscanf(fp, "%lg%c", &values[i].v_field.v_double, &sep) != 2)
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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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if (fscanf(fp, "\"%1023[^ \n]%c", buf, &sep) != 2
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|| buf[strlen(buf)-1] != '"')
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return gripe("Malformed string in field %d", i + 1);
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buf[strlen(buf)-1] = '\0';
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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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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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default:
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if (fscanf(fp, "%1023[^ \n]%c", buf, &sep) != 2) {
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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_field.v_string = NULL;
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values[i].v_type = VAL_STRING;
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}
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else {
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values[i].v_field.v_string = strdup(buf);
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values[i].v_type = VAL_SYMBOL;
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}
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}
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if (sep == '\n')
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break;
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if (sep != ' ')
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return gripe(
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"Expected space or newline as field separator found %c",
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sep);
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}
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if (i >= MAX_NUM_COLUMNS)
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return gripe("Too many columns");
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if (i == 0)
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return gripe("No columns read");
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values[++i].v_type = VAL_NOTUSED;
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return i;
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}
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static int
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xunsymbol(struct castr *ca, char *buf)
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{
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struct symbol *symbol = (struct symbol *)empfile[ca->ca_table].cache;
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int i;
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int value = 0;
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char *token;
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if (ca->ca_flags & NSC_BITS)
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token = strtok( buf, "|");
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else
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token = buf;
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if (!token || token[0] == '\0')
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return gripe("Empty symbol value for field %s", ca->ca_name);
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while (token) {
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if ((i = stmtch(token, symbol, offsetof(struct symbol, name),
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sizeof(struct symbol))) != M_NOTFOUND) {
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if (!(ca->ca_flags & NSC_BITS))
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return(symbol[i].value);
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value |= symbol[i].value;
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}
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else
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return gripe("Symbol %s was not found for field %s", token,
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ca->ca_name);
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token = strtok(NULL, "|");
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}
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return(value);
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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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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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if (ca[i].ca_table == EF_BAD)
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return(gripe("Found symbol string %s, but column %s "
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"is not symbol or symbol sets",
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values[j].v_field.v_string, ca[i].ca_name));
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values[j].v_field.v_double =
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(double)xunsymbol(&ca[i], values[j].v_field.v_string);
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free(values[i].v_field.v_string);
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if (values[j].v_field.v_double < 0.0)
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return -1;
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/*
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* fall through
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*/
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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_STRINGY:
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return gripe("Field %s is of NSC_STRINGY type "
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"which is not supported", ca[i].ca_name);
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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] = 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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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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char sep;
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int row, 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;
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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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if (fscanf(fp, "XDUMP %63[^0123456789]%*d%c", name, &sep) != 2)
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return gripe("Expected XDUMP header");
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if (sep != '\n')
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return gripe("Junk after XDUMP header");
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if (strlen(name) < 2)
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return gripe("Invalid table name in header %s", name);
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if (name[strlen(name) - 1] != ' ')
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return gripe("Missing space after table name in header %s",
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name);
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name[strlen(name) - 1] = '\0';
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type = ef_byname(name);
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if (type < 0)
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return gripe("Table not found %s", name);
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if (expected_table != EF_BAD && expected_table != type)
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return gripe("Incorrect Table expecting %s got %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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for (row = 0; ; row++) {
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lineno++;
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ch = getc(fp);
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ungetc(ch, fp);
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if (ch == EOF)
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return gripe("Unexpected EOF");
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if (ch == '/')
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break;
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/*
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* TODO
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* Add column count check to the return value of xuflds()
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*/
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if (xuflds(fp, values) <= 0)
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return -1;
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else {
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if (row >= empfile[type].csize - 1)
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return gripe("Too many rows for table %s", name);
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empfile[type].fids = row + 1;
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if (!fixed_rows)
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xuinitrow(type, row);
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if (xuloadrow(type, row, values) < 0)
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return -1;
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}
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}
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if (fscanf(fp, "/%d%c", &rows, &sep) != 2)
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return gripe("Failed to find number of rows trailer");
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if (row != rows)
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return gripe("Number of rows doesn't match between "
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"the trailer and what was read");
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if (fixed_rows && row != empfile[type].csize -1)
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return gripe("Number of rows doesn't match, and "
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"it must for table %s", name);
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if (sep != '\n')
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return gripe("Junk after number of rows trailer");
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if (!fixed_rows)
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xuinitrow(type, row);
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return 0;
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}
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