/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
* ---
*
* xundump.c: Load back xdump output
- *
+ *
* Known contributors to this file:
* Ron Koenderink, 2005
- * Markus Armbruster, 2005
+ * Markus Armbruster, 2005-2011
*/
-/* FIXME normalize terminology: table/rows/columns or file/records/fields */
+/*
+ * See doc/xdump! And keep it up-to-date.
+ *
+ * Parsing of machine-readable xdump is not precise: it recognizes
+ * comments, accepts whitespace in place of single space, and accepts
+ * the full human-readable field syntax instead of its machine-
+ * readable subset.
+ *
+ * FIXME:
+ * - Normalize terminology: table/rows/columns or file/records/fields
+ * - Loading tables with NSC_STRING elements more than once leaks memory
+ * TODO:
+ * - Symbolic array indexes
+ * - Option to treat missing and unknown fields as warning, not error
+ * TODO, but hardly worth the effort:
+ * - Permit reordering of array elements
+ */
#include <config.h>
+#include <ctype.h>
+#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
-
-#include <ctype.h>
#include <string.h>
-#include <stdarg.h>
#include <time.h>
-
#include "file.h"
#include "match.h"
#include "nsc.h"
#include "optlist.h"
-#include "prototypes.h"
-
-static char *fname;
-static int lineno;
-static int human;
-static int cur_type;
-static void *cur_obj;
-static int nflds;
-static struct castr **fldca;
-static int *fldidx;
-static int *caflds;
+#include "xdump.h"
+
+static char *fname; /* Name of file being read */
+static int lineno; /* Current line number */
+
+static int cur_type; /* Current table's file type */
+static int partno; /* Counts from 0..#parts-1 */
+static void *cur_obj; /* The object being read into */
+static int cur_id; /* and its index in the table */
+static int old_nelem;
+static unsigned char *idgap; /* idgap && idgap[ID] iff part#0 lacks ID */
+static int idgap_len; /* #elements in idgap[] */
+
+static int human; /* Reading human-readable syntax? */
+static int ellipsis; /* Header ended with ...? */
+static int nflds; /* #fields in input records */
+static struct castr **fldca; /* Map field number to selector */
+static int *fldidx; /* Map field number to index */
+static int *caflds; /* Map selector number to #fields seen */
+static int *cafldspp; /* ditto, in previous parts */
+static int may_omit_id; /* Okay to omit IDs? */
+static int may_trunc; /* Okay to truncate? */
static int gripe(char *, ...) ATTRIBUTE((format (printf, 1, 2)));
static int deffld(int, char *, int);
+static int defellipsis(void);
+static int chkflds(void);
static int setnum(int, double);
static int setstr(int, char *);
-static int xunsymbol1(char *, struct symbol *, struct castr *, int);
+static int xunsymbol(char *, struct castr *, int);
static int setsym(int, char *);
static int mtsymset(int, long *);
static int add2symset(int, long *, char *);
-static struct symbol *get_symtab(struct castr *);
-static int xundump1(FILE *, int, struct castr *);
+static int xubody(FILE *);
+static int xutail(FILE *, struct castr *);
+/*
+ * Gripe about the current line to stderr, return -1.
+ */
static int
gripe(char *fmt, ...)
{
return -1;
}
+/* Make TYPE the current table. */
+static void
+tbl_start(int type)
+{
+ cur_type = type;
+ partno = 0;
+ cur_id = -1;
+ cur_obj = NULL;
+ old_nelem = type == EF_BAD ? 0 : ef_nelem(type);
+ idgap = NULL;
+ idgap_len = 0;
+}
+
+/* End the current table. */
+static void
+tbl_end(void)
+{
+ free(idgap);
+ tbl_start(EF_BAD);
+}
+
+/*
+ * Seek to current table's ID-th record.
+ * ID must be acceptable.
+ * Store it in cur_obj, and set cur_id accordingly.
+ * Return 0 on success, -1 on failure.
+ */
+static int
+tbl_seek(int id)
+{
+ struct empfile *ep = &empfile[cur_type];
+
+ if (id >= ef_nelem(cur_type)) {
+ if (!ef_ensure_space(cur_type, id, 1))
+ return gripe("Can't put ID %d into table %s", id, ep->name);
+ }
+
+ cur_obj = ef_ptr(cur_type, id);
+ if (CANT_HAPPEN(!cur_obj))
+ return -1;
+ cur_id = id;
+ return 0;
+}
+
+/*
+ * Get the next object.
+ * Must not have a record index.
+ * Store it in cur_obj, and set cur_id accordingly.
+ * Return 0 on success, -1 on failure.
+ */
+static int
+tbl_next_obj(void)
+{
+ int max_id = ef_id_limit(cur_type);
+
+ if (cur_id >= max_id)
+ return gripe("Too many rows");
+ return tbl_seek(cur_id + 1);
+}
+
+/*
+ * Omit ID1..ID2-1.
+ * Reset the omitted objects to default state.
+ */
+static void
+omit_ids(int id1, int id2)
+{
+ int i;
+
+ if (id1 >= id2)
+ return;
+
+ idgap = realloc(idgap, id2 * sizeof(*idgap));
+ for (i = idgap_len; i < id1; i++)
+ idgap[i] = 0;
+ for (i = id1; i < id2; i++) {
+ ef_blank(cur_type, i, ef_ptr(cur_type, i));
+ idgap[i] = 1;
+ }
+ idgap_len = id2;
+}
+
+/*
+ * Return the smallest non-omitted ID in ID1..ID2-1 if any, else -1.
+ */
+static int
+expected_id(int id1, int id2)
+{
+ int i;
+
+ for (i = id1; i < id2; i++) {
+ if (i >= idgap_len || !idgap[i])
+ return i;
+ }
+ return -1;
+}
+
+/*
+ * Get the next object, it has record index ID.
+ * Store it in cur_obj, and set cur_id accordingly.
+ * Ensure we're omitting the same objects as the previous parts.
+ * Reset any omitted objects to default state.
+ * Return 0 on success, -1 on failure.
+ */
+static int
+tbl_skip_to_obj(int id)
+{
+ struct empfile *ep = &empfile[cur_type];
+ int prev_id = cur_id;
+ int max_id, exp_id;
+
+ if (partno == 0) {
+ if (!may_omit_id && id != cur_id + 1)
+ return gripe("Expected %d in field %d", cur_id + 1, 1);
+ if (id <= cur_id)
+ return gripe("Field %d must be > %d", 1, cur_id);
+ max_id = ef_id_limit(cur_type);
+ if (id > max_id)
+ return gripe("Field %d must be <= %d", 1, max_id);
+ } else {
+ exp_id = expected_id(cur_id + 1, ep->fids);
+ if (exp_id < 0)
+ return gripe("Table's first part doesn't have this row");
+ else if (id != exp_id)
+ return gripe("Expected %d in field %d,"
+ " like in table's first part",
+ exp_id, 1);
+ }
+
+ if (tbl_seek(id) < 0)
+ return -1;
+
+ if (partno == 0)
+ omit_ids(prev_id + 1, id);
+ return 0;
+}
+
+/*
+ * Finish table part.
+ * If the table has variable length, truncate it.
+ * Else ensure we're omitting the same objects as the previous parts.
+ * Reset any omitted objects to default state.
+ * Return 0 on success, -1 on failure.
+ */
+static int
+tbl_part_done(void)
+{
+ struct empfile *ep = &empfile[cur_type];
+ int exp_id;
+
+ if (cur_id + 1 < ep->fids) {
+ if (partno == 0) {
+ if (may_trunc) {
+ if (!ef_truncate(cur_type, cur_id + 1))
+ return -1;
+ } else {
+ if (!may_omit_id)
+ return gripe("Expected %d more rows",
+ ep->fids - (cur_id + 1));
+ omit_ids(cur_id + 1, ep->fids);
+ }
+ } else {
+ exp_id = expected_id(cur_id + 1, ep->fids);
+ if (exp_id >= 0)
+ return gripe("Expected row with %d in field %d,"
+ " like in table's first part",
+ exp_id, 1);
+ }
+ }
+
+ partno++;
+ cur_id = -1;
+ cur_obj = NULL;
+ return 0;
+}
+
+/*
+ * Read and ignore field separators from FP.
+ * Return first character that is not a field separator.
+ */
static int
skipfs(FILE *fp)
{
return ch;
}
-static int
-getid(FILE *fp, char *buf)
-{
- int n;
- if (fscanf(fp, "%1023[^#() \t\n]%n", buf, &n) != 1 || !isalpha(buf[0]))
- return -1;
- return n;
-}
-
+/*
+ * Decode escape sequences in BUF.
+ * Return BUF on success, null pointer on failure.
+ */
static char *
xuesc(char *buf)
{
return buf;
}
+/*
+ * Read an identifier from FP into BUF.
+ * BUF must have space for 1024 characters.
+ * Return number of characters read on success, -1 on failure.
+ */
+static int
+getid(FILE *fp, char *buf)
+{
+ int n;
+ if (fscanf(fp, "%1023[^\"#()<>= \t\n]%n", buf, &n) != 1
+ || !isalpha(buf[0]))
+ return -1;
+ xuesc(buf);
+ return n;
+}
+
+/*
+ * Try to read a field name from FP.
+ * I is the field number, counting from zero.
+ * If a name is read, set fldca[I] and fldidx[I] for it, and update
+ * caflds[].
+ * Return 1 if a name or ... was read, 0 on end of line, -1 on error.
+ */
static int
xufldname(FILE *fp, int i)
{
case EOF:
return gripe("Unexpected EOF");
case '\n':
- if (i != nflds)
- return gripe("Header fields missing"); /* TODO which? */
+ if (chkflds() < 0)
+ return -1;
lineno++;
return 0;
+ case '.':
+ if (getc(fp) != '.' || getc(fp) != '.')
+ return gripe("Junk in header field %d", i + 1);
+ if (defellipsis() < 0)
+ return -1;
+ ch = skipfs(fp);
+ if (ch != EOF && ch != '\n')
+ return gripe("Junk after ...");
+ ungetc(ch, fp);
+ return 1;
default:
ungetc(ch, fp);
if (getid(fp, buf) < 0)
}
}
+/*
+ * Try to read a field value from FP.
+ * I is the field number, counting from zero.
+ * Return 1 if a value was read, 0 on end of line, -1 on error.
+ */
static int
xufld(FILE *fp, int i)
{
case EOF:
return gripe("Unexpected EOF");
case '\n':
- if (i != nflds)
+ CANT_HAPPEN(i > nflds);
+ if (i < nflds) {
+ if (fldca[i]->ca_type != NSC_STRINGY && fldca[i]->ca_len)
+ return gripe("Field %s(%d) missing",
+ fldca[i]->ca_name, fldidx[i]);
return gripe("Field %s missing", fldca[i]->ca_name);
+ }
lineno++;
return 0;
case '+': case '-': case '.':
}
}
+/*
+ * Read fields from FP.
+ * Use PARSE() to read each field.
+ * Return number of fields read on success, -1 on error.
+ */
static int
xuflds(FILE *fp, int (*parse)(FILE *, int))
{
}
}
+/*
+ * Define the FLDNO-th field.
+ * If IDX is negative, define as selector NAME, else as NAME(IDX).
+ * Set fldca[FLDNO] and fldidx[FLDNO] accordingly.
+ * Update caflds[].
+ * Return 1 on success, -1 on error.
+ */
static int
deffld(int fldno, char *name, int idx)
{
int res;
res = stmtch(name, ca, offsetof(struct castr, ca_name),
- sizeof(struct castr));
+ sizeof(struct castr));
if (res < 0)
return gripe("Header %s of field %d is %s", name, fldno + 1,
res == M_NOTUNIQUE ? "ambiguous" : "unknown");
+ if ((ca[res].ca_flags & NSC_EXTRA) || CANT_HAPPEN(ca[res].ca_get))
+ return gripe("Extraneous header %s in field %d", name, fldno + 1);
if (ca[res].ca_type != NSC_STRINGY && ca[res].ca_len != 0) {
if (idx < 0)
return gripe("Header %s requires an index in field %d",
return 1;
}
+/*
+ * Record that header ends with ...
+ * Set ellipsis and is_partial.
+ * Return 0 on success, -1 on error.
+ */
+static int
+defellipsis(void)
+{
+ struct castr *ca = ef_cadef(cur_type);
+
+ if (ca[0].ca_table != cur_type || (ca[0].ca_flags & NSC_EXTRA))
+ return gripe("Table %s doesn't support ...", ef_nameof(cur_type));
+ ellipsis = 1;
+ return 0;
+}
+
+/* Is table split into parts? */
+static int
+is_partial(void)
+{
+ return ellipsis || partno;
+}
+
+/*
+ * Check fields in xdump are sane.
+ * Return 0 on success, -1 on error.
+ */
+static int
+chkflds(void)
+{
+ struct castr *ca = ef_cadef(cur_type);
+ int i, len, cafldsmax, res = 0;
+
+ /* Record index must come first, to make cur_id work, see setnum() */
+ if (ca[0].ca_table == cur_type && caflds[0] && fldca[0] != &ca[0])
+ res = gripe("Header field %s must come first", ca[0].ca_name);
+
+ if (is_partial()) {
+ /* Need a join field, use 0-th selector */
+ if (!caflds[0])
+ res = gripe("Header field %s required in each table part",
+ ca[0].ca_name);
+ }
+
+ if (ellipsis)
+ return res; /* table is split, another part expected */
+
+ /* Check for missing fields */
+ for (i = 0; ca[i].ca_name; i++) {
+ cafldsmax = MAX(caflds[i], cafldspp[i]);
+ if (ca[i].ca_flags & NSC_EXTRA)
+ continue;
+ len = ca[i].ca_type != NSC_STRINGY ? ca[i].ca_len : 0;
+ if (!len && !cafldsmax)
+ res = gripe("Header field %s missing", ca[i].ca_name);
+ else if (len && cafldsmax == len - 1)
+ res = gripe("Header field %s(%d) missing",
+ ca[i].ca_name, len - 1);
+ else if (len && cafldsmax < len - 1)
+ res = gripe("Header fields %s(%d) ... %s(%d) missing",
+ ca[i].ca_name, cafldsmax, ca[i].ca_name, len - 1);
+ }
+
+ return res;
+}
+
+/*
+ * Get selector for field FLDNO.
+ * Assign the field's selector index to *IDX, unless it is null.
+ * Return the selector on success, null pointer on error.
+ */
static struct castr *
getfld(int fldno, int *idx)
{
return fldca[fldno];
}
+/*
+ * Is a new value for field FLDNO required to match the old one?
+ */
+static int
+fldval_must_match(int fldno)
+{
+ struct castr *ca = ef_cadef(cur_type);
+ int i = fldca[fldno] - ca;
+
+ /*
+ * Value must match if:
+ * it's for a const selector, unless the object is still blank, or
+ * it was already given in a previous part of a split table.
+ */
+ return (cur_id < old_nelem && (fldca[fldno]->ca_flags & NSC_CONST))
+ || fldidx[fldno] < cafldspp[i];
+}
+
+/*
+ * Set value of field FLDNO in current object to DBL.
+ * Return 1 on success, -1 on error.
+ */
static int
setnum(int fldno, double dbl)
{
struct castr *ca;
- int idx;
+ int next_id, idx;
char *memb_ptr;
- double old;
+ double old, new;
ca = getfld(fldno, &idx);
if (!ca)
return -1;
+ if (fldno == 0) {
+ if (ca->ca_table == cur_type) {
+ /* Got record index */
+ next_id = (int)dbl;
+ if (next_id != dbl)
+ return gripe("Field %d can't hold this value", fldno + 1);
+ if (tbl_skip_to_obj(next_id) < 0)
+ return -1;
+ } else {
+ if (tbl_next_obj() < 0)
+ return -1;
+ }
+ }
memb_ptr = cur_obj;
memb_ptr += ca->ca_off;
+
switch (ca->ca_type) {
case NSC_CHAR:
- case NSC_TYPEID:
old = ((signed char *)memb_ptr)[idx];
- ((signed char *)memb_ptr)[idx] = (signed char)dbl;
+ new = ((signed char *)memb_ptr)[idx] = (signed char)dbl;
break;
case NSC_UCHAR:
+ case NSC_HIDDEN:
old = ((unsigned char *)memb_ptr)[idx];
- ((unsigned char *)memb_ptr)[idx] = (unsigned char)dbl;
+ new = ((unsigned char *)memb_ptr)[idx] = (unsigned char)dbl;
break;
case NSC_SHORT:
old = ((short *)memb_ptr)[idx];
- ((short *)memb_ptr)[idx] = (short)dbl;
+ new = ((short *)memb_ptr)[idx] = (short)dbl;
break;
case NSC_USHORT:
old = ((unsigned short *)memb_ptr)[idx];
- ((unsigned short *)memb_ptr)[idx] = (unsigned short)dbl;
+ new = ((unsigned short *)memb_ptr)[idx] = (unsigned short)dbl;
break;
case NSC_INT:
old = ((int *)memb_ptr)[idx];
- ((int *)memb_ptr)[idx] = (int)dbl;
+ new = ((int *)memb_ptr)[idx] = (int)dbl;
break;
case NSC_LONG:
old = ((long *)memb_ptr)[idx];
- ((long *)memb_ptr)[idx] = (long)dbl;
+ new = ((long *)memb_ptr)[idx] = (long)dbl;
break;
case NSC_XCOORD:
old = ((coord *)memb_ptr)[idx];
- ((coord *)memb_ptr)[idx] = XNORM((coord)dbl);
+ /* FIXME use variant of xrel() that takes orig instead of nation */
+ if (old >= WORLD_X / 2)
+ old -= WORLD_X;
+ new = ((coord *)memb_ptr)[idx] = XNORM((coord)dbl);
+ if (new >= WORLD_X / 2)
+ new -= WORLD_X;
break;
case NSC_YCOORD:
old = ((coord *)memb_ptr)[idx];
- ((coord *)memb_ptr)[idx] = YNORM((coord)dbl);
+ /* FIXME use variant of yrel() that takes orig instead of nation */
+ if (old >= WORLD_Y / 2)
+ old -= WORLD_Y;
+ new = ((coord *)memb_ptr)[idx] = YNORM((coord)dbl);
+ if (new >= WORLD_Y / 2)
+ new -= WORLD_Y;
break;
case NSC_FLOAT:
old = ((float *)memb_ptr)[idx];
((float *)memb_ptr)[idx] = (float)dbl;
+ new = dbl; /* suppress new != dbl check */
break;
case NSC_DOUBLE:
old = ((double *)memb_ptr)[idx];
((double *)memb_ptr)[idx] = dbl;
+ new = dbl; /* suppress new != dbl check */
break;
case NSC_TIME:
old = ((time_t *)memb_ptr)[idx];
- ((time_t *)memb_ptr)[idx] = (time_t)dbl;
+ new = ((time_t *)memb_ptr)[idx] = (time_t)dbl;
break;
default:
return gripe("Field %d doesn't take numbers", fldno + 1);
}
- if ((ca->ca_flags & NSC_CONST) && old != dbl)
+ if (fldval_must_match(fldno) && old != dbl)
return gripe("Value for field %d must be %g", fldno + 1, old);
+ if (new != dbl)
+ return gripe("Field %d can't hold this value", fldno + 1);
return 1;
}
+/*
+ * Set value of field FLDNO in current object to STR.
+ * Return 1 on success, -1 on error.
+ */
static int
setstr(int fldno, char *str)
{
struct castr *ca;
- int idx;
+ int must_match, idx;
+ size_t len;
char *memb_ptr, *old;
ca = getfld(fldno, &idx);
if (!ca)
return -1;
+ if (fldno == 0) {
+ if (tbl_next_obj() < 0)
+ return -1;
+ }
memb_ptr = cur_obj;
memb_ptr += ca->ca_off;
+ must_match = fldval_must_match(fldno);
+
switch (ca->ca_type) {
case NSC_STRING:
old = ((char **)memb_ptr)[idx];
- if (!(ca->ca_flags & NSC_CONST))
+ if (!must_match)
+ /* FIXME may leak old value */
((char **)memb_ptr)[idx] = str ? strdup(str) : NULL;
+ len = 65535; /* really SIZE_MAX, but that's C99 */
break;
case NSC_STRINGY:
if (CANT_HAPPEN(idx))
return -1;
if (!str)
- return gripe("Field doesn't take nil");
- if (strlen(str) > ca->ca_len)
+ return gripe("Field %d doesn't take nil", fldno + 1);
+ len = ca->ca_len;
+ if (strlen(str) > len)
return gripe("Field %d takes at most %d characters",
- fldno + 1, ca->ca_len);
+ fldno + 1, (int)len);
old = memb_ptr;
- if (!(ca->ca_flags & NSC_CONST))
- strncpy(memb_ptr, str, ca->ca_len);
+ if (!must_match)
+ strncpy(memb_ptr, str, len);
break;
default:
return gripe("Field %d doesn't take strings", fldno + 1);
}
- if (ca->ca_flags & NSC_CONST) {
- if (old && (!str || strcmp(old, str)))
- return gripe("Value for field %d must be \"%s\"", fldno + 1, old);
+ if (must_match) {
+ if (old && (!str || strncmp(old, str, len)))
+ return gripe("Value for field %d must be \"%.*s\"",
+ fldno + 1, (int)len, old);
if (!old && str)
return gripe("Value for field %d must be nil", fldno + 1);
}
return 1;
}
+/*
+ * Resolve symbol name ID in table referred to by CA.
+ * Use field number N for error messages.
+ * Return index in referred table on success, -1 on failure.
+ */
static int
-xunsymbol1(char *id, struct symbol *symtab, struct castr *ca, int n)
+xunsymbol(char *id, struct castr *ca, int n)
{
- int i = stmtch(id, symtab, offsetof(struct symbol, name),
- sizeof(struct symbol));
+ int i = ef_elt_byname(ca->ca_table, id);
if (i < 0)
return gripe("%s %s symbol `%s' in field %d",
i == M_NOTUNIQUE ? "Ambiguous" : "Unknown",
- ca->ca_name, id, n);
+ ca->ca_name, id, n + 1);
return i;
}
+/*
+ * Map symbol index to symbol value.
+ * CA is the table, and I is the index in it.
+ */
+static int
+symval(struct castr *ca, int i)
+{
+ int type = ca->ca_table;
+
+ if (type != EF_BAD && ef_cadef(type) == symbol_ca)
+ /* symbol table, value is in the table */
+ return ((struct symbol *)ef_ptr(type, i))->value;
+ /* value is the table index */
+ return i;
+}
+
+/*
+ * Set value of field FLDNO in current object to value of symbol SYM.
+ * Return 1 on success, -1 on error.
+ */
static int
setsym(int fldno, char *sym)
{
struct castr *ca;
- struct symbol *symtab;
int i;
ca = getfld(fldno, NULL);
if (!ca)
return -1;
- symtab = get_symtab(ca);
- if (!symtab || (ca->ca_flags & NSC_BITS))
+ if (ca->ca_table == EF_BAD || (ca->ca_flags & NSC_BITS))
return gripe("Field %d doesn't take symbols", fldno + 1);
- i = xunsymbol1(sym, symtab, ca, fldno);
+ i = xunsymbol(sym, ca, fldno);
if (i < 0)
return -1;
- return setnum(fldno, symtab[i].value);
-}
-
-static int
-has_const(struct castr ca[])
-{
- int i;
-
- for (i = 0; ca[i].ca_name; i++) {
- if (ca[i].ca_flags & NSC_CONST)
- return 1;
- }
- return 0;
+ return setnum(fldno, symval(ca, i));
}
+/*
+ * Create an empty symbol set for field FLDNO in *SET.
+ * Return 1 on success, -1 on error.
+ */
static int
mtsymset(int fldno, long *set)
{
struct castr *ca;
- struct symbol *symtab;
ca = getfld(fldno, NULL);
if (!ca)
return -1;
- symtab = get_symtab(ca);
- if (!symtab || !(ca->ca_flags & NSC_BITS)) {
+ if (ca->ca_table == EF_BAD || ef_cadef(ca->ca_table) != symbol_ca
+ || !(ca->ca_flags & NSC_BITS))
return gripe("Field %d doesn't take symbol sets", fldno + 1);
- }
*set = 0;
return 0;
}
+/*
+ * Add a symbol to a symbol set for field FLDNO in *SET.
+ * SYM is the name of the symbol to add.
+ * Return 1 on success, -1 on error.
+ */
static int
add2symset(int fldno, long *set, char *sym)
{
struct castr *ca;
- struct symbol *symtab;
int i;
ca = getfld(fldno, NULL);
if (!ca)
return -1;
- symtab = get_symtab(ca);
- i = xunsymbol1(sym, symtab, ca, fldno);
+ i = xunsymbol(sym, ca, fldno);
if (i < 0)
return -1;
- *set |= symtab[i].value;
+ *set |= symval(ca, i);
return 0;
}
-static struct symbol *
-get_symtab(struct castr *ca)
-{
- int symtype = ca->ca_table;
- struct symbol *symtab;
-
- if (symtype == EF_BAD || ef_cadef(symtype) != symbol_ca)
- return NULL;
-
- symtab = ef_ptr(symtype, 0);
- CANT_HAPPEN(!symtab);
- return symtab;
-}
-
+/*
+ * Read an xdump table header line from FP.
+ * Expect header for EXPECTED_TABLE, unless it is EF_BAD.
+ * Recognize header for machine- and human-readable syntax, and set
+ * human accordingly.
+ * Return table type on success, -2 on EOF before header, -1 on failure.
+ */
static int
xuheader(FILE *fp, int expected_table)
{
while ((ch = skipfs(fp)) == '\n')
lineno++;
if (ch == EOF && expected_table == EF_BAD)
- return -1;
+ return -2;
ungetc(ch, fp);
human = ch == 'c';
res = -1;
if ((human
- ? fscanf(fp, "config%*[ \t]%63[^ \t#\n]%n", name, &res) != 1
- : fscanf(fp, "XDUMP%*[ \t]%63[^ \t#\n]%*[ \t]%*[^ \t#\n]%n",
- name, &res) != 1) || res < 0)
+ ? fscanf(fp, "config%*[ \t]%63[^ \t#\n]%n", name, &res) != 1
+ : fscanf(fp, "XDUMP%*[ \t]%63[^ \t#\n]%*[ \t]%*[^ \t#\n]%n",
+ name, &res) != 1) || res < 0)
return gripe("Expected xdump header");
type = ef_byname(name);
return gripe("Expected table `%s', not `%s'",
ef_nameof(expected_table), name);
- if (!ef_cadef(type) || !(ef_flags(type) & EFF_MEM)) {
+ if (!empfile[type].file
+ || !ef_cadef(type) || !(ef_flags(type) & EFF_MEM)) {
CANT_HAPPEN(expected_table != EF_BAD);
- return gripe("Undumping of table `%s' not implemented", name);
+ return gripe("Table `%s' is not permitted here", name);
}
if (skipfs(fp) != '\n')
return type;
}
+/*
+ * Find fields in this xdump.
+ * If reading human-readable syntax, read a field header line from FP.
+ * Else take fields from the table's selectors in CA[].
+ * Set ellipsis, nflds, fldca[], fldidx[] and caflds[] accordingly.
+ * Return 0 on success, -1 on failure.
+ */
static int
-xutrailer(FILE *fp, int type, int row)
+xufldhdr(FILE *fp, struct castr ca[])
{
- int rows, res;
+ struct castr **fca;
+ int *fidx;
+ int ch, i, j, n;
+
+ for (i = 0; ca[i].ca_name; i++)
+ caflds[i] = 0;
+ ellipsis = 0;
+
+ if (human) {
+ while ((ch = skipfs(fp)) == '\n')
+ lineno++;
+ ungetc(ch, fp);
+ nflds = xuflds(fp, xufldname);
+ if (nflds < 0)
+ return -1;
+ nflds -= ellipsis != 0;
+ } else {
+ fca = fldca;
+ fidx = fldidx;
+
+ for (i = 0; ca[i].ca_name; i++) {
+ if ((ca[i].ca_flags & NSC_EXTRA))
+ continue;
+ n = ca[i].ca_type != NSC_STRINGY ? ca[i].ca_len : 0;
+ j = 0;
+ do {
+ *fca++ = &ca[i];
+ *fidx++ = j;
+ } while (++j < n);
+ }
+
+ nflds = fidx - fldidx;
+ }
+
+ return 0;
+}
+
+/*
+ * Read xdump footer from FP.
+ * CA[] contains the table's selectors.
+ * The body had RECS records.
+ * Update cafldspp[] from caflds[].
+ * Return 0 on success, -1 on failure.
+ */
+static int
+xufooter(FILE *fp, struct castr ca[], int recs)
+{
+ int res, n, i;
res = -1;
if (human) {
- if (fscanf(fp, "config%n", &res) != 0 || res < 0)
+ if (fscanf(fp, "config%n", &res) != 0 || res < 0)
return gripe("Malformed table footer");
} else {
- if (fscanf(fp, "%d", &rows) != 1)
+ if (fscanf(fp, "%d", &n) != 1)
return gripe("Malformed table footer");
- if (row != rows)
+ if (recs != n)
return gripe("Read %d rows, which doesn't match footer "
- "%d rows", row, rows);
+ "%d rows", recs, n);
}
if (skipfs(fp) != '\n')
return gripe("Junk after table footer");
+ if (tbl_part_done() < 0)
+ return -1;
lineno++;
+ for (i = 0; ca[i].ca_name; i++) {
+ if (cafldspp[i] < caflds[i])
+ cafldspp[i] = caflds[i];
+ }
+
return 0;
}
+/*
+ * Read an xdump table from FP.
+ * Both machine- and human-readable xdump syntax are recognized.
+ * Expect table EXPECTED_TABLE, unless it is EF_BAD.
+ * Report errors to stderr.
+ * Messages assume FP starts in the file FILE at line *PLNO.
+ * Update *PLNO to reflect lines read from FP.
+ * Return table type on success, -2 on EOF before header, -1 on failure.
+ */
int
-xundump(FILE *fp, char *file, int expected_table)
+xundump(FILE *fp, char *file, int *plno, int expected_table)
{
struct castr *ca;
- int type, nca, i;
+ int type, nca, nf, i, ch;
- if (fname != file) {
- fname = file;
- lineno = 1;
- }
+ fname = file;
+ lineno = *plno;
if ((type = xuheader(fp, expected_table)) < 0)
- return -1;
+ return type;
ca = ef_cadef(type);
if (CANT_HAPPEN(!ca))
return -1;
- nca = nflds = 0;
+ nca = nf = 0;
+ may_omit_id = 1;
+ may_trunc = empfile[type].nent < 0;
for (i = 0; ca[i].ca_name; i++) {
nca++;
- if (!(ca[i].ca_flags & NSC_EXTRA))
- nflds += MAX(1, ca[i].ca_type != NSC_STRINGY ? ca[i].ca_len : 0);
- }
- fldca = calloc(nflds, sizeof(*fldca));
- fldidx = calloc(nflds, sizeof(*fldidx));
- caflds = calloc(nca, sizeof(*caflds));
-
- cur_type = type;
- if (human) {
- if (xuflds(fp, xufldname) < 0)
- type = EF_BAD;
- } else {
- struct castr **fca = fldca;
- int *fidx = fldidx;
- int i, j, n;
- for (i = 0; ca[i].ca_name; i++) {
- if ((ca[i].ca_flags & NSC_EXTRA))
- continue;
- n = ca[i].ca_type != NSC_STRINGY ? ca[i].ca_len : 0;
- j = 0;
- do {
- *fca++ = &ca[i];
- *fidx++ = j;
- } while (++j < n);
+ if (!(ca[i].ca_flags & NSC_EXTRA)) {
+ nf += MAX(1, ca[i].ca_type != NSC_STRINGY ? ca[i].ca_len : 0);
+ if (ca[i].ca_flags & NSC_CONST)
+ may_omit_id = may_trunc = 0;
}
}
+ fldca = malloc(nf * sizeof(*fldca));
+ fldidx = malloc(nf * sizeof(*fldidx));
+ caflds = malloc(nca * sizeof(*caflds));
+ cafldspp = calloc(nca, sizeof(*cafldspp));
- if (type >= 0 && xundump1(fp, type, ca) < 0)
+ tbl_start(type);
+ if (xutail(fp, ca) < 0)
type = EF_BAD;
+ tbl_end();
+ free(cafldspp);
free(caflds);
free(fldidx);
free(fldca);
+ /* Skip empty lines so that callers can easily check for EOF */
+ while ((ch = skipfs(fp)) == '\n')
+ lineno++;
+ ungetc(ch, fp);
+
+ *plno = lineno;
return type;
}
+/*
+ * Read the remainder of an xdump after the table header line from FP.
+ * CA[] contains the table's selectors.
+ * Return 0 on success, -1 on failure.
+ */
static int
-xundump1(FILE *fp, int type, struct castr *ca)
+xutail(FILE *fp, struct castr *ca)
{
- struct empfile *ep = &empfile[type];
- int fixed_rows = has_const(ca);
- int need_sentinel = !EF_IS_GAME_STATE(type);
- int row, ch;
+ int recs;
- for (row = 0;; ++row) {
- ch = skipfs(fp);
+ for (;;) {
+ if (xufldhdr(fp, ca) < 0)
+ return -1;
+ if ((recs = xubody(fp)) < 0)
+ return -1;
+ if (xufooter(fp, ca, recs) < 0)
+ return -1;
+ if (!ellipsis)
+ return 0;
+ if (xuheader(fp, cur_type) < 0)
+ return -1;
+ }
+}
+
+/*
+ * Read the body of an xdump table from FP.
+ * Return number of rows read on success, -1 on failure.
+ */
+static int
+xubody(FILE *fp)
+{
+ int i, ch;
+
+ for (i = 0;; ++i) {
+ while ((ch = skipfs(fp)) == '\n')
+ lineno++;
if (ch == '/')
break;
ungetc(ch, fp);
- /* TODO ability to skip records */
- if (!fixed_rows) {
- if (row >= ep->csize - !!need_sentinel)
- /* TODO grow cache unless EFF_STATIC */
- return gripe("Too many rows for table %s", ef_nameof(type));
- if (row >= ep->cids)
- /* TODO grow file */
- ep->cids = ep->fids = row + 1;
- }
- cur_obj = ef_ptr(type, row);
- if (!cur_obj)
- return gripe("Too many rows for table %s", ef_nameof(type));
if (xuflds(fp, xufld) < 0)
return -1;
}
- if (row != ep->fids) {
- if (fixed_rows)
- return gripe("Table %s requires %d rows, got %d",
- ef_nameof(type), ep->fids, row);
- else {
- ep->cids = ep->fids = row;
- if (EF_IS_GAME_STATE(type) && row != ep->csize)
- /* TODO truncate file */
- gripe("Warning: should resize table %s from %d to %d, not implemented",
- ef_nameof(type), ep->csize, row);
- }
- }
-
- if (need_sentinel) {
- if (CANT_HAPPEN(row >= ep->csize))
- return gripe("No space for sentinel");
- memset(ep->cache + ep->size * row, 0, ep->size);
- }
-
- if (xutrailer(fp, type, row) < 0)
- return -1;
-
- return 0;
+ return i;
}
projects / empserver / blobdiff