mirror of
https://github.com/libretro/scummvm.git
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abbca80d61
a directory with an id and a state file, a savegame now consists of two consecutive CFSML-serialized structs: SavegameMetadata and state_t. The former contains the savegame title, and is loaded when scanning saves. svn-id: r38649
1124 lines
33 KiB
Perl
1124 lines
33 KiB
Perl
#! /usr/bin/env perl
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# The C File Storage Meta Language "reference" implementation
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# This implementation is supposed to conform to version
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$version = "0.8.2";
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# of the spec. Please contact the maintainer if it doesn't.
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#
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# cfsml.pl Copyright (C) 1999, 2000, 2001 Christoph Reichenbach
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#
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#
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# This program may be modified and copied freely according to the terms of
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# the GNU general public license (GPL), as long as the above copyright
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# notice and the licensing information contained herein are preserved.
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#
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# Please refer to www.gnu.org for licensing details.
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#
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# This work is provided AS IS, without warranty of any kind, expressed or
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# implied, including but not limited to the warranties of merchantibility,
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# noninfringement, and fitness for a specific purpose. The author will not
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# be held liable for any damage caused by this work or derivatives of it.
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#
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# By using this source code, you agree to the licensing terms as stated
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# above.
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#
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#
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# Please contact the maintainer for bug reports or inquiries.
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#
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# Current Maintainer:
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#
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# Christoph Reichenbach (CJR) [jameson@linuxgames.com]
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#
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#
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# Warning: This is still a "bit" messy. Sorry for that.
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#
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#$debug = 1;
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$write_lines = "true";
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$source_file = "CFSML source file";
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$type_integer = "integer";
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$type_string = "string";
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$type_record = "RECORD";
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$type_pointer = "POINTER";
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$type_abspointer = "ABSPOINTER";
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%types; # Contains all type bindings
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%records; # Contains all record bindings
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$mode = undef;
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while ($op = shift @ARGV) {
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if ($mode eq undef) {
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if ($op eq "-f") {
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$mode = "fname";
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} elsif ($op eq "-l") {
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$write_lines = undef;
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} elsif ($op eq "-v") {
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print "cfsml.pl, the CFSML code generator, version $version\n";
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print "This program is provided WITHOUT WARRANTY of any kind. It may be\n";
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print "copied and modified freely according to the terms of the GNU\n";
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print "General Public License.\n";
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exit(0);
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} elsif ($op eq "-h") {
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print "CFSML help:\n";
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print "Usage: cat source | cfsml.pl [-v] [-h] [-l] [-f <filename>] > dest\n";
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print " -h : help\n";
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print " -v : print version\n";
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print " -l : disable line number printing in dest file\n";
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print " -f : specify file name for line number printing\n";
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exit(0);
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} else {
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die "Unknown option '$op'\n";
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}
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} elsif ($mode eq "fname") {
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$source_file = $op;
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$mode = 0;
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} else {
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die "Invalid internal state '$mode'\n";
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}
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}
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sub write_line_pp
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# write_line_pp(int line_nr, bool input_file?)
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{
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my $line_nr = shift;
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my $_file = shift;
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my $filename = "cfsml.pl";
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if (_file) {
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$filename = $source_file;
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}
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if ($write_lines) {
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print "#line $line_nr \"$filename\"\n";
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}
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}
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sub create_string_functions
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{
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$firstline = __LINE__;
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$firstline += 4;
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write_line_pp($firstline, 0);
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print <<'EOF';
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#include <stdarg.h> // We need va_lists
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#include "sci/include/sci_memory.h"
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#ifdef CFSML_DEBUG_MALLOC
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/*
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#define free(p) dbg_sci_free(p)
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#define malloc(s) dbg_sci_malloc(s)
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#define calloc(n, s) dbg_sci_calloc(n, s)
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#define realloc(p, s) dbg_sci_realloc(p, s)
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*/
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#define free dbg_sci_free
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#define malloc dbg_sci_malloc
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#define calloc dbg_sci_calloc
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#define realloc dbg_sci_realloc
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#endif
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static void _cfsml_error(const char *fmt, ...) {
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va_list argp;
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fprintf(stderr, "Error: ");
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va_start(argp, fmt);
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vfprintf(stderr, fmt, argp);
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va_end(argp);
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}
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static struct _cfsml_pointer_refstruct {
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struct _cfsml_pointer_refstruct *next;
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void *ptr;
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} *_cfsml_pointer_references = NULL;
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static struct _cfsml_pointer_refstruct **_cfsml_pointer_references_current = &_cfsml_pointer_references;
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static char *_cfsml_last_value_retrieved = NULL;
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static char *_cfsml_last_identifier_retrieved = NULL;
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static void _cfsml_free_pointer_references_recursively(struct _cfsml_pointer_refstruct *refs, int free_pointers) {
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if (!refs)
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return;
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_cfsml_free_pointer_references_recursively(refs->next, free_pointers);
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if (free_pointers)
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free(refs->ptr);
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free(refs);
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}
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static void _cfsml_free_pointer_references(struct _cfsml_pointer_refstruct **meta_ref, int free_pointers) {
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_cfsml_free_pointer_references_recursively(*meta_ref, free_pointers);
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*meta_ref = NULL;
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_cfsml_pointer_references_current = meta_ref;
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}
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static struct _cfsml_pointer_refstruct **_cfsml_get_current_refpointer() {
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return _cfsml_pointer_references_current;
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}
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static void _cfsml_register_pointer(void *ptr) {
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struct _cfsml_pointer_refstruct *newref = (struct _cfsml_pointer_refstruct*)sci_malloc(sizeof (struct _cfsml_pointer_refstruct));
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newref->next = *_cfsml_pointer_references_current;
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newref->ptr = ptr;
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*_cfsml_pointer_references_current = newref;
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}
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static char *_cfsml_mangle_string(const char *s) {
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const char *source = s;
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char c;
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char *target = (char *)sci_malloc(1 + strlen(s) * 2); // We will probably need less than that
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char *writer = target;
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while ((c = *source++)) {
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if (c < 32) { // Special character?
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*writer++ = '\\'; // Escape...
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c += ('a' - 1);
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} else if (c == '\\' || c == '"')
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*writer++ = '\\'; // Escape, but do not change
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*writer++ = c;
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}
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*writer = 0; // Terminate string
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return (char *)sci_realloc(target, strlen(target) + 1);
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}
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static char *_cfsml_unmangle_string(const char *s, unsigned int length) {
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char *target = (char *)sci_malloc(1 + strlen(s));
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char *writer = target;
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const char *source = s;
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const char *end = s + length;
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char c;
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while ((source != end) && (c = *source++) && (c > 31)) {
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if (c == '\\') { // Escaped character?
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c = *source++;
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if ((c != '\\') && (c != '"')) // Un-escape 0-31 only
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c -= ('a' - 1);
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}
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*writer++ = c;
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}
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*writer = 0; // Terminate string
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return (char *)sci_realloc(target, strlen(target) + 1);
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}
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static char *_cfsml_get_identifier(Common::SeekableReadStream *fd, int *line, int *hiteof, int *assignment) {
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int c;
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int mem = 32;
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int pos = 0;
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int done = 0;
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char *retval = (char *)sci_malloc(mem);
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if (_cfsml_last_identifier_retrieved) {
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free(_cfsml_last_identifier_retrieved);
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_cfsml_last_identifier_retrieved = NULL;
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}
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while (isspace(c = SRSgetc(fd)) && (c != EOF));
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if (c == EOF) {
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_cfsml_error("Unexpected end of file at line %d\n", *line);
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free(retval);
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*hiteof = 1;
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return NULL;
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}
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int first = 1;
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while ((first || (c = SRSgetc(fd)) != EOF) && ((pos == 0) || (c != '\n')) && (c != '=')) {
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first = 0;
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if (pos == mem - 1) // Need more memory?
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retval = (char *)sci_realloc(retval, mem *= 2);
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if (!isspace(c)) {
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if (done) {
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_cfsml_error("Single word identifier expected at line %d\n", *line);
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free(retval);
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return NULL;
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}
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retval[pos++] = c;
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} else
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if (pos != 0)
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done = 1; // Finished the variable name
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else if (c == '\n')
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++(*line);
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}
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if (c == EOF) {
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_cfsml_error("Unexpected end of file at line %d\n", *line);
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free(retval);
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*hiteof = 1;
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return NULL;
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}
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if (c == '\n') {
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++(*line);
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if (assignment)
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*assignment = 0;
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} else
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if (assignment)
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*assignment = 1;
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if (pos == 0) {
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_cfsml_error("Missing identifier in assignment at line %d\n", *line);
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free(retval);
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return NULL;
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}
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if (pos == mem - 1) // Need more memory?
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retval = (char *)sci_realloc(retval, mem += 1);
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retval[pos] = 0; // Terminate string
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EOF
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if ($debug) {
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print " printf(\"identifier is '%s'\\n\", retval);\n";
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}
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$firstline = __LINE__;
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$firstline += 4;
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write_line_pp($firstline, 0);
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print <<'EOF2';
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return _cfsml_last_identifier_retrieved = retval;
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}
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static char *_cfsml_get_value(Common::SeekableReadStream *fd, int *line, int *hiteof) {
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int c;
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int mem = 64;
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int pos = 0;
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char *retval = (char *)sci_malloc(mem);
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if (_cfsml_last_value_retrieved) {
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free(_cfsml_last_value_retrieved);
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_cfsml_last_value_retrieved = NULL;
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}
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while (((c = SRSgetc(fd)) != EOF) && (c != '\n')) {
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if (pos == mem - 1) // Need more memory?
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retval = (char *)sci_realloc(retval, mem *= 2);
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if (pos || (!isspace(c)))
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retval[pos++] = c;
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}
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while ((pos > 0) && (isspace(retval[pos - 1])))
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--pos; // Strip trailing whitespace
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if (c == EOF)
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*hiteof = 1;
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if (pos == 0) {
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_cfsml_error("Missing value in assignment at line %d\n", *line);
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free(retval);
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return NULL;
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}
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if (c == '\n')
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++(*line);
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if (pos == mem - 1) // Need more memory?
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retval = (char *)sci_realloc(retval, mem += 1);
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retval[pos] = 0; // Terminate string
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EOF2
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if ($debug) {
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print " printf(\"value is '%s'\\n\", retval);\n";
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}
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$firstline = __LINE__;
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$firstline += 4;
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write_line_pp($firstline, 0);
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print <<'EOF3';
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return (_cfsml_last_value_retrieved = (char *)sci_realloc(retval, strlen(retval) + 1));
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// Re-allocate; this value might be used for quite some while (if we are restoring a string)
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}
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EOF3
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}
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# Call with $expression as a simple expression, like "tos + 1".
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# Returns (in this case) ("tos", "-1").
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sub lvaluize
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{
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my @retval;
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# print "//DEBUG: $expression [";
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my @tokens = split (/([+-\/\*])/, $expression);
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# print join(",", @tokens);
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$retval[0] = $tokens[0];
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my $rightvalue = "";
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for ($i = 1; $tokens[$i]; $i++) {
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if ($tokens[$i] eq "+") {
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$rightvalue .= "-";
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} elsif ($tokens[$i] eq "-") {
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$rightvalue .= "+";
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} elsif ($tokens[$i] eq "/") {
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$rightvalue .= "*";
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} elsif ($tokens[$i] eq "*") {
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$rightvalue .= "/";
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} else {
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$rightvalue .= $tokens[$i];
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}
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}
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$retval[1] = $rightvalue;
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# print "] => ($retval[0];$retval[1])\n";
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return @retval;
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}
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sub create_declaration
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{
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$typename = $type;
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$ctype = $types{$type}->{'ctype'};
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if (not $types{$type}->{'external'}) {
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$types{$type}{'writer'} = "_cfsml_write_" . $typename;
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$types{$type}{'reader'} = "_cfsml_read_" . $typename;
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write_line_pp(__LINE__, 0);
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print "static void $types{$type}{'writer'}(Common::WriteStream *fh, $ctype* save_struc);\n";
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print "static int $types{$type}{'reader'}(Common::SeekableReadStream *fh, $ctype* save_struc, const char *lastval, int *line, int *hiteof);\n\n";
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};
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}
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sub create_writer
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{
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$typename = $type;
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$ctype = $types{$type}{'ctype'};
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write_line_pp(__LINE__, 0);
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print "static void\n_cfsml_write_$typename(Common::WriteStream *fh, $ctype* save_struc)\n{\n";
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if ($types{$type}{'type'} eq $type_record) {
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print " int min, max, i;\n\n";
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}
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if ($types{$type}{'type'} eq $type_integer) {
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print " WSprintf(fh, \"%li\", (long)*save_struc);\n";
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}
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elsif ($types{$type}{'type'} eq $type_string) {
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write_line_pp(__LINE__, 0);
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print " if (!(*save_struc))\n";
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print " WSprintf(fh, \"\\\\null\\\\\");\n";
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print " else {\n";
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print " char *token = _cfsml_mangle_string((const char *) *save_struc);\n";
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print " WSprintf(fh, \"\\\"%s\\\"\", token);\n";
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print " free(token);\n";
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print " }\n";
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}
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elsif ($types{$type}{'type'} eq $type_record) {
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write_line_pp(__LINE__, 0);
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print " WSprintf(fh, \"{\\n\");\n";
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for $n (@{$records{$type}}) {
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print " WSprintf(fh, \"$n->{'name'} = \");\n";
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if ($n->{'array'}) { # Check for arrays
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if ($n->{'array'} eq 'static' or $n->{'size'} * 2) { # fixed integer value?
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print " min = max = $n->{'size'};\n";
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}
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else { # No, a variable
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print " min = max = save_struc->$n->{'size'};\n";
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}
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if ($n->{'maxwrite'}) { # A write limit?
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print " if (save_struc->$n->{'maxwrite'} < min)\n";
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print " min = save_struc->$n->{'maxwrite'};\n";
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}
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if ($n->{'array'} eq 'dynamic') {
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print " if (!save_struc->$n->{'name'})\n";
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print " min = max = 0; /* Don't write if it points to NULL */\n";
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}
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write_line_pp(__LINE__, 0);
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print " WSprintf(fh, \"[%d][\\n\", max);\n";
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print " for (i = 0; i < min; i++) {\n";
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print " $types{$n->{'type'}}{'writer'}";
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my $subscribstr = "[i]"; # To avoid perl interpolation problems
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print "(fh, &(save_struc->$n->{'name'}$subscribstr));\n";
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print " WSprintf(fh, \"\\n\");\n";
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print " }\n";
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print " WSprintf(fh, \"]\");\n";
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} elsif ($n->{'type'} eq $type_pointer) { # Relative pointer
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print " WSprintf(fh, \"%d\", save_struc->$n->{'name'} - save_struc->$n->{'anchor'}); // Relative pointer\n";
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} elsif ($n->{'type'} eq $type_abspointer) { # Absolute pointer
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print " if (!save_struc->$n->{'name'})\n";
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print " WSprintf(fh, \"\\\\null\\\\\");\n";
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print " else \n";
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print " $types{$n->{'reftype'}}{'writer'}";
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print "(fh, save_struc->$n->{'name'});\n";
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} else { # Normal record entry
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print " $types{$n->{'type'}}{'writer'}";
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print "(fh, ($types{$n->{'type'}}{'ctype'}*) &(save_struc->$n->{'name'}));\n";
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}
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print " WSprintf(fh, \"\\n\");\n";
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}
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print " WSprintf(fh, \"}\");\n";
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}
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else {
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print STDERR "Warning: Attempt to create_writer for invalid type '$types{$type}{'type'}'\n";
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}
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print "}\n\n";
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}
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|
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sub create_reader
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|
{
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$typename = $type;
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$ctype = $types{$type}{'ctype'};
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|
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write_line_pp(__LINE__, 0);
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print "static int\n_cfsml_read_$typename(Common::SeekableReadStream *fh, $ctype* save_struc, const char *lastval, int *line, int *hiteof)\n{\n";
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print " char *token;\n";
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if ($types{$type}{'type'} eq $type_record) {
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print " int min, max, i;\n";
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}
|
|
my $reladdress_nr = 0; # Number of relative addresses needed
|
|
my $reladdress = 0; # Current relative address number
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my $reladdress_resolver = ""; # Relative addresses are resolved after the main while block
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|
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if ($types{$type}{'type'} eq $type_record) {
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|
|
foreach $n (@{$records{$type}}) { # Count relative addresses we need
|
|
if ($n->{'type'} eq $type_pointer) {
|
|
++$reladdress_nr;
|
|
}
|
|
}
|
|
|
|
if ($reladdress_nr) { # Allocate stack space for all relative addresses needed
|
|
print " int reladdresses[$reladdress_nr] = {0};\n";
|
|
}
|
|
}
|
|
|
|
if ($types{$type}{'type'} eq $type_integer) {
|
|
write_line_pp(__LINE__, 0);
|
|
print "\n *save_struc = strtol(lastval, &token, 0);\n";
|
|
print " if ((*save_struc == 0) && (token == lastval)) {\n";
|
|
print " _cfsml_error(\"strtol failed at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " if (*token != 0) {\n";
|
|
print " _cfsml_error(\"Non-integer encountered while parsing int value at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " return CFSML_SUCCESS;\n";
|
|
} elsif ($types{$type}{'type'} eq $type_string) {
|
|
write_line_pp(__LINE__, 0);
|
|
print "\n";
|
|
print " if (strcmp(lastval, \"\\\\null\\\\\")) { // null pointer?\n";
|
|
print " unsigned int length = strlen(lastval);\n";
|
|
print " if (*lastval == '\"') { // Quoted string?\n";
|
|
print " while (lastval[length] != '\"')\n";
|
|
print " --length;\n\n";
|
|
print " if (!length) { // No matching double-quotes?\n";
|
|
print " _cfsml_error(\"Unbalanced quotes at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n\n";
|
|
print " lastval++; // ...and skip the opening quotes locally\n";
|
|
print " length--;\n";
|
|
print " }\n";
|
|
print " *save_struc = _cfsml_unmangle_string(lastval, length);\n";
|
|
print " _cfsml_register_pointer(*save_struc);\n";
|
|
print " return CFSML_SUCCESS;\n";
|
|
print " } else {\n";
|
|
print " *save_struc = NULL;\n";
|
|
print " return CFSML_SUCCESS;\n";
|
|
print " }\n";
|
|
} elsif ($types{$type}{'type'} eq $type_record) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " int assignment, closed, done;\n\n";
|
|
print " if (strcmp(lastval, \"{\")) {\n";
|
|
print " _cfsml_error(\"Reading record $type; expected opening braces in line %d, got \\\"%s\\\"\\n\", *line, lastval);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " };\n";
|
|
print " closed = 0;\n";
|
|
print " do {\n";
|
|
print " const char *value;\n";
|
|
print " token = _cfsml_get_identifier(fh, line, hiteof, &assignment);\n\n";
|
|
print " if (!token) {\n";
|
|
print " _cfsml_error(\"Expected token at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " if (!assignment) {\n";
|
|
print " if (!strcmp(token, \"}\")) \n";
|
|
print " closed = 1;\n";
|
|
print " else {\n";
|
|
print " _cfsml_error(\"Expected assignment or closing braces in line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " } else {\n";
|
|
print " value = \"\";\n";
|
|
print " while (!value || !strcmp(value, \"\"))\n";
|
|
print " value = _cfsml_get_value(fh, line, hiteof);\n";
|
|
print " if (!value) {\n";
|
|
print " _cfsml_error(\"Expected token at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
# print " }\n";
|
|
|
|
|
|
foreach $n (@{$records{$type}}) { # Now take care of all record elements
|
|
|
|
my $type = $n->{'type'};
|
|
my $reference = undef;
|
|
if ($type eq $type_abspointer) {
|
|
$reference = 1;
|
|
$type = $n->{'reftype'};
|
|
}
|
|
my $name = $n->{'name'};
|
|
my $reader = $types{$type}{'reader'};
|
|
my $size = $n->{'size'};
|
|
|
|
print " if (!strcmp(token, \"$name\")) {\n";
|
|
|
|
if ($type eq $type_pointer) { # A relative pointer
|
|
|
|
$reader = $types{'int'}{'reader'}; # Read relpointer as int
|
|
|
|
write_line_pp(__LINE__, 0);
|
|
print " if ($reader(fh, &(reladdresses[$reladdress]), value, line, hiteof)) {\n";
|
|
print " _cfsml_error(\"Expected token at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
|
|
# Make sure that the resulting variable is interpreted correctly
|
|
$reladdress_resolver .= " save_struc->$n->{'name'} = save_struc->$n->{'anchor'} + reladdresses[$reladdress];\n";
|
|
|
|
++$reladdress; # Prepare reladdress for next element
|
|
|
|
} elsif ($n->{'array'}) { # Is it an array?
|
|
write_line_pp(__LINE__, 0);
|
|
print " if ((value[0] != '[') || (value[strlen(value) - 1] != '[')) {\n";
|
|
# The value must end with [, since we're starting array data, and it must also
|
|
# begin with [, since this is either the only character in the line, or it starts
|
|
# the "amount of memory to allocate" block
|
|
print " _cfsml_error(\"Opening brackets expected at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
|
|
if ($n->{'array'} eq 'dynamic') {
|
|
write_line_pp(__LINE__, 0);
|
|
# We need to allocate the array first
|
|
print " // Prepare to restore dynamic array\n";
|
|
# Read amount of memory to allocate
|
|
print " max = strtol(value + 1, NULL, 0);\n";
|
|
print " if (max < 0) {\n";
|
|
print " _cfsml_error(\"Invalid number of elements to allocate for dynamic array '%s' at line %d\\n\", token, *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n\n";
|
|
|
|
print " if (max) {\n";
|
|
print " save_struc->$name = ($n->{'type'} *)sci_malloc(max * sizeof($type));\n";
|
|
print "#ifdef SATISFY_PURIFY\n";
|
|
print " memset(save_struc->$name, 0, max * sizeof($type));\n";
|
|
print "#endif\n";
|
|
print " _cfsml_register_pointer(save_struc->$name);\n";
|
|
print " } else\n";
|
|
print " save_struc->$name = NULL;\n"
|
|
|
|
} else { # static array
|
|
print " // Prepare to restore static array\n";
|
|
print " max = $size;\n";
|
|
}
|
|
|
|
write_line_pp(__LINE__, 0);
|
|
print " done = i = 0;\n";
|
|
print " do {\n";
|
|
if ($type eq $type_record) {
|
|
print " if (!(value = _cfsml_get_value(fh, line, hiteof))) {\n";
|
|
} else {
|
|
print " if (!(value = _cfsml_get_identifier(fh, line, hiteof, NULL))) {\n";
|
|
}
|
|
write_line_pp(__LINE__, 0);
|
|
|
|
print " _cfsml_error(\"Token expected at line %d\\n\", *line);\n";
|
|
print " return 1;\n";
|
|
print " }\n";
|
|
print " if (strcmp(value, \"]\")) {\n";
|
|
print " if (i == max) {\n";
|
|
print " _cfsml_error(\"More elements than space available (%d) in '%s' at line %d\\n\", max, token, *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
my $helper = "[i++]";
|
|
print " if ($reader(fh, &(save_struc->$name$helper), value, line, hiteof)) {\n";
|
|
print " _cfsml_error(\"Token expected by $reader() for $name$helper at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " } else \n";
|
|
print " done = 1;\n";
|
|
print " } while (!done);\n";
|
|
|
|
if ($n->{'array'} eq "dynamic") {
|
|
my @xpr = lvaluize($expression = $n->{'size'});
|
|
print " save_struc->$xpr[0] = max $xpr[1]; // Set array size accordingly\n";
|
|
}
|
|
|
|
if ($n->{'maxwrite'}) {
|
|
my @xpr = lvaluize($expression = $n->{'maxwrite'});
|
|
print " save_struc->$xpr[0] = i $xpr[1]; // Set number of elements\n";
|
|
}
|
|
|
|
}
|
|
elsif ($reference) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " if (strcmp(value, \"\\\\null\\\\\")) { // null pointer?\n";
|
|
print " save_struc->$name = sci_malloc(sizeof ($type));\n";
|
|
print " _cfsml_register_pointer(save_struc->$name);\n";
|
|
print " if ($reader(fh, save_struc->$name, value, line, hiteof)) {\n";
|
|
print " _cfsml_error(\"Token expected by $reader() for $name at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " } else \n";
|
|
print " save_struc->$name = NULL;\n";
|
|
}
|
|
else { # It's a simple variable or a struct
|
|
write_line_pp(__LINE__, 0);
|
|
print " if ($reader(fh, ($types{$type}{'ctype'}*) &(save_struc->$name), value, line, hiteof)) {\n";
|
|
print " _cfsml_error(\"Token expected by $reader() for $name at line %d\\n\", *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
}
|
|
print " } else\n";
|
|
|
|
}
|
|
write_line_pp(__LINE__, 0);
|
|
print " {\n";
|
|
print " _cfsml_error(\"$type: Assignment to invalid identifier '%s' in line %d\\n\", token, *line);\n";
|
|
print " return CFSML_FAILURE;\n";
|
|
print " }\n";
|
|
print " }\n";
|
|
|
|
print " } while (!closed); // Until closing braces are hit\n";
|
|
|
|
print $reladdress_resolver; # Resolves any relative addresses
|
|
|
|
print " return CFSML_SUCCESS;\n";
|
|
} else {
|
|
print STDERR "Warning: Attempt to create_reader for invalid type '$types{$type}{'type'}'\n";
|
|
}
|
|
|
|
print "}\n\n";
|
|
}
|
|
|
|
# Built-in types
|
|
|
|
%types = (
|
|
'int' => {
|
|
'type' => $type_integer,
|
|
'ctype' => "int",
|
|
},
|
|
|
|
'string' => {
|
|
'type' => $type_string,
|
|
'ctype' => "char *",
|
|
},
|
|
);
|
|
|
|
|
|
|
|
sub create_function_block {
|
|
print "\n// Auto-generated CFSML declaration and function block\n\n";
|
|
write_line_pp(__LINE__, 0);
|
|
print "#define CFSML_SUCCESS 0\n";
|
|
print "#define CFSML_FAILURE 1\n\n";
|
|
create_string_functions;
|
|
|
|
foreach $n ( keys %types ) {
|
|
create_declaration($type = $n);
|
|
}
|
|
|
|
foreach $n ( keys %types ) {
|
|
if (not $types{$n}->{'external'}) {
|
|
create_writer($type = $n);
|
|
create_reader($type = $n);
|
|
}
|
|
}
|
|
print "\n// Auto-generated CFSML declaration and function block ends here\n";
|
|
print "// Auto-generation performed by cfsml.pl $version \n";
|
|
}
|
|
|
|
|
|
# Gnerates code to read a data type
|
|
# Parameters: $type: Type to read
|
|
# $datap: Pointer to the write destination
|
|
# $fh: Existing filehandle of an open file to use
|
|
# $eofvar: Variable to store _cfsml_eof into
|
|
sub insert_reader_code {
|
|
print "// Auto-generated CFSML data reader code\n";
|
|
write_line_pp(__LINE__, 0);
|
|
print " {\n";
|
|
if (!$linecounter) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " int _cfsml_line_ctr = 0;\n";
|
|
$linecounter = '_cfsml_line_ctr';
|
|
}
|
|
if ($atomic) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " struct _cfsml_pointer_refstruct **_cfsml_myptrrefptr = _cfsml_get_current_refpointer();\n";
|
|
}
|
|
write_line_pp(__LINE__, 0);
|
|
print " int _cfsml_eof = 0, _cfsml_error;\n";
|
|
print " int dummy;\n";
|
|
|
|
if ($firsttoken) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " const char *_cfsml_inp = $firsttoken;\n";
|
|
} else {
|
|
write_line_pp(__LINE__, 0);
|
|
print " const char *_cfsml_inp = _cfsml_get_identifier($fh, &($linecounter), &_cfsml_eof, &dummy);\n\n";
|
|
}
|
|
|
|
write_line_pp(__LINE__, 0);
|
|
print " _cfsml_error = $types{$type}{'reader'}($fh, $datap, _cfsml_inp, &($linecounter), &_cfsml_eof);\n";
|
|
|
|
if ($eofvar) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " $eofvar = _cfsml_error;\n";
|
|
}
|
|
if ($atomic) {
|
|
write_line_pp(__LINE__, 0);
|
|
print " _cfsml_free_pointer_references(_cfsml_myptrrefptr, _cfsml_error);\n";
|
|
}
|
|
write_line_pp(__LINE__, 0);
|
|
print " if (_cfsml_last_value_retrieved) {\n";
|
|
print " free(_cfsml_last_value_retrieved);\n";
|
|
print " _cfsml_last_value_retrieved = NULL;\n";
|
|
print " }\n";
|
|
print " if (_cfsml_last_identifier_retrieved) {\n";
|
|
print " free(_cfsml_last_identifier_retrieved);\n";
|
|
print " _cfsml_last_identifier_retrieved = NULL;\n";
|
|
print " }\n";
|
|
print " }\n";
|
|
print "// End of auto-generated CFSML data reader code\n";
|
|
}
|
|
|
|
# Generates code to write a data type
|
|
# Parameters: $type: Type to write
|
|
# $datap: Pointer to the write destination
|
|
# $fh: Existing filehandle of an open file to use
|
|
sub insert_writer_code {
|
|
write_line_pp(__LINE__, 0);
|
|
print "// Auto-generated CFSML data writer code\n";
|
|
print " $types{$type}{'writer'}($fh, $datap);\n";
|
|
print " WSprintf($fh, \"\\n\");\n";
|
|
print "// End of auto-generated CFSML data writer code\n";
|
|
}
|
|
|
|
|
|
################
|
|
# Main program #
|
|
################
|
|
|
|
$parsing = 0;
|
|
$struct = undef; # Not working on a struct
|
|
$commentmode = undef;
|
|
$line = 0;
|
|
|
|
while (<STDIN>) {
|
|
|
|
$line++;
|
|
|
|
if ($parsing) {
|
|
($data) = split "#"; # Remove shell-style comments
|
|
@_ = ($data);
|
|
|
|
s/\/\*.*\*\///g; # Remove C-style one-line comments
|
|
|
|
($data) = split "\/\/"; # Remove C++-style comments
|
|
@_ = ($data);
|
|
|
|
if ($commentmode) {
|
|
|
|
if (grep /\*\//, $_) {
|
|
($empty, $_) = split /\*\//;
|
|
} else {
|
|
@_ = (); # Empty line
|
|
}
|
|
|
|
} else {
|
|
if (grep /\/\*/, $_) {
|
|
$commentmode = 1;
|
|
($_) = split /\/\*/;
|
|
}
|
|
}
|
|
|
|
|
|
# Now tokenize:
|
|
s/;//;
|
|
split /(\".*\"|[,\[\]\(\)\{\}])|\s+/;
|
|
|
|
@items = @_;
|
|
|
|
@tokens = ();
|
|
|
|
$tokens_nr = 0;
|
|
for ($n = 0; $n < scalar @items; $n++) { # Get rid of all undefs
|
|
if ($_[$n]) {
|
|
$_ = $items[$n];
|
|
s/\"//g;
|
|
$tokens[$tokens_nr++] = $_;
|
|
}
|
|
}
|
|
|
|
# Now all tokens are in @tokens, and we have $tokens_nr of them.
|
|
|
|
# print "//DEBUG: " . join ("|", @tokens) . "\n";
|
|
|
|
if ($tokens_nr) {
|
|
if ($tokens_nr == 2 && $tokens[0] eq "%END" && $tokens[1] eq "CFSML") {
|
|
|
|
$struct && die "Record $struct needs closing braces in intput file (line $line).";
|
|
|
|
$parsing = 0;
|
|
create_function_block;
|
|
my $linep = $line + 1;
|
|
write_line_pp($linep, 1);
|
|
} elsif ($struct) { # Parsing struct
|
|
if ($tokens_nr == 1) {
|
|
if ($tokens[0] eq "}") {
|
|
$struct = undef;
|
|
} else { die "Invalid declaration of $token[0] in input file (line $line)\n";};
|
|
} else { # Must be a member declaration
|
|
|
|
my @structrecs = (@{$records{$struct}});
|
|
my $newidx = (scalar @structrecs) or "0";
|
|
my %member = ();
|
|
$member{'name'} = $tokens[1];
|
|
$member{'type'} = $tokens[0];
|
|
|
|
if ($tokens_nr == 3 && $tokens[1] == "*") {
|
|
$tokens_nr = 2;
|
|
$member{'name'} = $tokens[2];
|
|
$member{'reftype'} = $tokens[0];
|
|
$member{'type'} = $type_abspointer;
|
|
}
|
|
|
|
if ($tokens_nr == 4 and $tokens[0] eq $type_pointer) { # Relative pointer
|
|
|
|
if (not $tokens[2] eq "RELATIVETO") {
|
|
die "Invalid relative pointer declaration in input file (line $line)\n";
|
|
}
|
|
|
|
$member{'anchor'} = $tokens[3]; # RelPointer anchor
|
|
|
|
} else { # Non-pointer
|
|
|
|
if (not $types{$tokens[0]}) {
|
|
die "Unknown type $tokens[0] used in input file (line $line)\n";
|
|
}
|
|
|
|
if ($tokens_nr > 2) { # Array
|
|
|
|
if ($tokens[2] ne "[") {
|
|
die "Invalid token '$tokens[2]' in input file (line $line)\n";
|
|
}
|
|
|
|
$member{'array'} = "static";
|
|
|
|
if ($tokens[$tokens_nr - 1] ne "]") {
|
|
die "Array declaration incorrectly terminated in input file (line $line)\n";
|
|
}
|
|
|
|
$parsepos = 3;
|
|
|
|
while ($parsepos < $tokens_nr) {
|
|
|
|
if ($tokens[$parsepos] eq ",") {
|
|
|
|
$parsepos++;
|
|
|
|
} elsif ($tokens[$parsepos] eq "STATIC") {
|
|
|
|
$member{'array'} = "static";
|
|
$parsepos++;
|
|
|
|
} elsif ($tokens[$parsepos] eq "DYNAMIC") {
|
|
|
|
$member{'array'} = "dynamic";
|
|
$parsepos++;
|
|
|
|
} elsif ($tokens[$parsepos] eq "MAXWRITE") {
|
|
|
|
$member{'maxwrite'} = $tokens[$parsepos + 1];
|
|
$parsepos += 2;
|
|
|
|
} elsif ($tokens[$parsepos] eq "]") {
|
|
|
|
$parsepos++;
|
|
if ($parsepos != $tokens_nr) {
|
|
die "Error: Invalid tokens after array declaration in input file (line $line)\n";
|
|
|
|
}
|
|
} else {
|
|
|
|
if ($member{'size'}) {
|
|
die "Attempt to use more than one array size in input file (line $line)\n" .
|
|
"(Original size was \"$member->{'size'}\", new size is \"$tokens[$parsepos]\"\n";
|
|
}
|
|
|
|
$member{'size'} = $tokens[$parsepos];
|
|
$parsepos++;
|
|
}
|
|
}
|
|
|
|
|
|
unless ($member{'size'}) {
|
|
die "Array declaration without size in input file (line $line)\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
@{$records{$struct}}->[$newidx] = \%member;
|
|
}
|
|
} else { # not parsing struct; normal operation.
|
|
|
|
if ($tokens[0] eq "TYPE") { # Simple type declaration
|
|
|
|
my $newtype = $tokens[1];
|
|
|
|
$types{$newtype}->{'ctype'} = $tokens[2];
|
|
|
|
if ($tokens_nr == 5) { # must be ...LIKE...
|
|
|
|
unless ($tokens[3] eq "LIKE") {
|
|
die "Invalid TYPE declaration in input file (line $line)\n";
|
|
}
|
|
|
|
$types{$newtype}->{'type'} = $types{$tokens[4]}->{'type'};
|
|
$types{$newtype}->{'reader'} = $types{$tokens[4]}->{'reader'};
|
|
$types{$newtype}->{'writer'} = $types{$tokens[4]}->{'writer'};
|
|
|
|
} elsif ($tokens_nr == 6) { # must be ...USING...
|
|
|
|
unless ($tokens[3] eq "USING") {
|
|
die "Invalid TYPE declaration in input file (line $line)\n";
|
|
}
|
|
|
|
$types{$newtype}->{'writer'} = $tokens[4];
|
|
$types{$newtype}->{'reader'} = $tokens[5];
|
|
$types{$newtype}->{'external'} = 'T';
|
|
|
|
} else {
|
|
die "Invalid TYPE declaration in input file (line $line)\n";
|
|
}
|
|
|
|
} elsif ($tokens[0] eq "RECORD") {
|
|
|
|
$struct = $tokens[1];
|
|
if ($types{$struct}) {
|
|
die "Attempt to re-define existing type $struct as a struct in input file (line $line)";
|
|
}
|
|
$types{$struct}{'type'} = $type_record;
|
|
if ($tokens_nr < 3 or $tokens_nr > 6 or $tokens[$tokens_nr - 1] ne "{") {
|
|
die "Invalid record declaration in input file (line $line)";
|
|
}
|
|
|
|
my $extoffset = 2;
|
|
|
|
if ($tokens_nr > 3) {
|
|
if ($tokens[2] ne "EXTENDS") { # Record declaration with explicit c type
|
|
$types{$struct}{'ctype'} = $tokens[2];
|
|
$extoffset = 3;
|
|
} else { # Record name is the same as the c type name
|
|
$types{$struct}{'ctype'} = $struct;
|
|
}
|
|
} elsif ($tokens_nr == 3) {
|
|
$types{$struct}{'ctype'} = $struct;
|
|
}
|
|
|
|
if (($tokens_nr > $extoffset + 1) && ($extoffset + 1 <= $tokens_nr)) {
|
|
if ($tokens[$extoffset] ne "EXTENDS") {
|
|
die "Invalid or improper keyword \"$tokens[$extoffset]\" in input file (line $line)";
|
|
}
|
|
if ($extoffset + 2 >= $tokens_nr) {
|
|
die "RECORD \"$struct\" extends on unspecified type in input file (line $line)";
|
|
}
|
|
my $ext_type = $tokens[$extoffset + 1];
|
|
|
|
if (!($types{$ext_type}{type} eq $type_record)) {
|
|
print "$types{$ext_type}{type}";
|
|
die "RECORD \"$struct\" attempts to extend non-existing or non-record type \"$ext_type\" in input file (line $line)";
|
|
}
|
|
|
|
(@{$records{$struct}}) = (@{$records{$ext_type}}); # Copy type information from super type
|
|
}
|
|
|
|
} else {
|
|
die "Invalid declaration \"$tokens[0]\" in line $line";
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
($subtoken) = split ";"; # Get rid of trailing ;s
|
|
$tokens_nr = @tokens = split " ", $subtoken;
|
|
|
|
if ($tokens_nr == 1 && $tokens[0] eq "%CFSML") {
|
|
|
|
$parsing = 1;
|
|
|
|
} elsif ($tokens[0] eq "%CFSMLWRITE" and $tokens[3] eq "INTO" and $tokens_nr >= 5) {
|
|
|
|
insert_writer_code($type = $tokens[1], $datap = $tokens[2], $fh = $tokens[4]);
|
|
my $templine = $line + 1;
|
|
write_line_pp($templine, 1); # Yes, this sucks.
|
|
|
|
} elsif (($tokens[0] eq "%CFSMLREAD") or ($tokens[0] eq "%CFSMLREAD-ATOMIC") and $tokens[3] eq "FROM" and $tokens_nr >= 5) {
|
|
|
|
my $myeofvar = 0;
|
|
my $myfirsttoken = 0;
|
|
my $mylinecounter = 0;
|
|
|
|
my $idcounter = 5;
|
|
|
|
while ($idcounter < $tokens_nr) {
|
|
if ($tokens[$idcounter] eq "ERRVAR" and $tokens_nr >= $idcounter + 2) {
|
|
$myeofvar = $tokens[$idcounter + 1];
|
|
$idcounter += 2;
|
|
} elsif ($tokens[$idcounter] eq "FIRSTTOKEN" and $tokens_nr >= $idcounter + 2) {
|
|
$myfirsttoken = $tokens[$idcounter + 1];
|
|
$idcounter += 2;
|
|
} elsif ($tokens[$idcounter] eq "LINECOUNTER" and $tokens_nr >= $idcounter + 2) {
|
|
$mylinecounter = $tokens[$idcounter + 1];
|
|
$idcounter += 2;
|
|
} else {
|
|
die "Unknown %CFSMLREAD operational token: $tokens[$idcounter]\n";
|
|
}
|
|
}
|
|
insert_reader_code($type = $tokens[1], $datap = $tokens[2],
|
|
$fh = $tokens[4], $eofvar = $myeofvar, $firsttoken = $myfirsttoken,
|
|
$linecounter = $mylinecounter, $atomic = ($tokens[0] eq "%CFSMLREAD-ATOMIC"));
|
|
my $templine = $line + 1;
|
|
write_line_pp($templine, 1); # Yes, this sucks, too.
|
|
|
|
} else {
|
|
print;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if ($parsing) {
|
|
print <STDERR>, "Warning: Missing %END CFSML\n";
|
|
}
|