char *escape_string(const char *input)
{
expand_buf_t *escape_string = eb_init(strlen(input) + strlen(input) / 2);
eb_append(escape_string, "\"", 1);
unsigned int i;
for (i = 0; i < strlen(input); i++)
{
switch (input[i])
{
case '"':
{
eb_append(escape_string, "\\\"", -1);
break;
}
case '\\':
{
eb_append(escape_string, "\\\\", -1);
break;
}
default:
{
eb_append(escape_string, &input[i], 1);
break;
}
}
}
eb_append(escape_string, "\"", 1);
char *result = eb_extract(escape_string);
eb_free(escape_string);
return result;
}
char *parse_emit_string (const char *ptr, ES_TYPE type, void *echo_target) {
static int level = 0;
char *word = NULL;
int session;
bool fWasParsed;
char *name_end;
level++;
arg_context_t context = ARG_CONTEXT_INITIALIZER;
while ((word = extract_arg_string(&ptr, &context)) != NULL)
{
// handle strings
if (word[0] == '"')
{
char *next = next_expr (word, EXPR_DELIMS);
if (*next != '\0')
goto echo_error;
reduce_string (word);
if (type == ES_ECHO)
{
if (echo_target != NULL)
{
fprintf ((FILE *) echo_target, "%s", word);
}
}
else if (type == ES_FCREATE) {
eb_append((expand_buf_t *) echo_target, word, strlen(word));
} else {
int i;
for (i = 0; word[i]; i++) {
if ((mode & MODE_NORMAL) || (mode & MODE_LIST))
write_out (word[i]);
stats_datasize++;
program_counter++;
}
}
} else {
int value;
session = StartSPASMErrorSession();
fWasParsed = parse_num(word, &value);
if (fWasParsed == true)
{
switch (type)
{
case ES_ECHO:
{
if (echo_target != NULL)
{
fprintf ((FILE *) echo_target, "%d", value);
}
break;
}
#ifdef USE_BUILTIN_FCREATE
case ES_FCREATE:
{
char buffer[256];
sprintf_s(buffer, "%d", value);
eb_append((expand_buf_t *) echo_target, buffer, -1);
break;
}
#endif
case ES_BYTE:
{
write_arg(value, ARG_NUM_8, 0, 0);
stats_datasize++;
program_counter++;
break;
}
case ES_WORD:
{
write_arg(value, ARG_NUM_16, 0, 0);
stats_datasize+=2;
program_counter+=2;
break;
}
case ES_LONG:
{
write_arg(value, ARG_NUM_24, 0, 0);
stats_datasize+=3;
program_counter+=3;
break;
}
}
ReplaySPASMErrorSession(session);
}
else if (IsSPASMErrorSessionFatal(session) == false && type != ES_FCREATE)
{
switch (type)
{
case ES_ECHO:
break;
case ES_BYTE:
{
add_pass_two_expr(word, ARG_NUM_8, 0, 0);
stats_datasize++;
program_counter++;
break;
}
case ES_WORD:
{
add_pass_two_expr(word, ARG_NUM_16, 0, 0);
stats_datasize+=2;
program_counter+=2;
break;
}
case ES_LONG:
{
add_pass_two_expr(word, ARG_NUM_24, 0, 0);
stats_datasize += 3;
program_counter += 3;
break;
}
}
ReplayFatalSPASMErrorSession(session);
}
else
{
char name[256];
char *next;
define_t *define;
name_end = word;
//printf("error occured: %d, forward: %d, value: %d\n", error_occurred, parser_forward_ref_err, value);
read_expr (&name_end, name, "(");
//printf("Looking up %s\n", name);
next = name_end;
read_expr (&next, NULL, ")");
if (*next != '\0')
goto echo_error;
if ((define = search_defines (name))) {
char *expr;
list_t *args = NULL;
//handle defines
if (define->contents == NULL)
{
SetLastSPASMError(SPASM_ERR_ARG_USED_WITHOUT_VALUE, name);
}
if (*(name_end - 1) == '(') name_end--;
name_end = parse_args (name_end, define, &args);
if (!name_end)
return (char *) ptr;
expr = parse_define (define);
if (expr != NULL)
{
arg_context_t nested_context = ARG_CONTEXT_INITIALIZER;
// Is it some kind of argument list?
const char *nested_expr = expr;
extract_arg_string(&nested_expr, &nested_context);
if (extract_arg_string(&nested_expr, &nested_context) != NULL)
{
// if it is, plug it in to the emit string
parse_emit_string(expr, type, echo_target);
}
else
{
if (IsErrorInSPASMErrorSession(session, SPASM_ERR_EXCEEDED_RECURSION_LIMIT) == false)
{
int inner_session = StartSPASMErrorSession();
parse_emit_string(expr, type, echo_target);
if (IsSPASMErrorSessionFatal(inner_session))
{
EndSPASMErrorSession(inner_session);
AddSPASMErrorSessionAnnotation(session, _T("Error during evaluation of macro '%s'"), define->name);
ReplaySPASMErrorSession(session);
}
else
{
EndSPASMErrorSession(inner_session);
}
//ReplaySPASMErrorSession(session);
}
else
{
ReplaySPASMErrorSession(session);
}
}
free (expr);
}
remove_arg_set (args);
}
else
{
echo_error:
switch (type)
{
case ES_ECHO:
{
if (echo_target != NULL)
{
fprintf((FILE *) echo_target, "(error)");
}
break;
}
case ES_FCREATE:
{
SetLastSPASMError(SPASM_ERR_LABEL_NOT_FOUND, word);
eb_append((expand_buf_t *) echo_target, "(error)", -1);
break;
}
}
ReplaySPASMErrorSession(session);
}
}
EndSPASMErrorSession(session);
}
}
if (type == ES_ECHO && level == 1) {
if (echo_target == stdout) putchar ('\n');
else {
if (echo_target != NULL)
{
fclose ((FILE *) echo_target);
}
}
}
level--;
return (char *) ptr;
}
static void expand_expr_full (const char *expr, expand_buf *new_expr, int depth, bool search_local) {
const char *block_start;
char *name;
static char separators[] = "=+-*<>|&/%^()\\, \t\r";
define_t *define;
label_t *label;
int name_len;
if (depth > RECURSION_LIMIT) {
SetLastSPASMError (SPASM_ERR_RECURSION_DEPTH, RECURSION_LIMIT);
return;
}
while (*expr) {
//handle strings
if (*expr == '\"') {
block_start = expr++;
while (*expr && *expr != '\"') {
if (!(*expr == '\\' && *(++expr) == '\0'))
expr++;
}
if (*expr)
expr++;
eb_append (new_expr, block_start, expr - block_start);
}
//get the next name and look it up
name = skip_to_name_end (expr);
name_len = name - expr;
//skip if there's no name, or if it's a macro with arguments
if (name_len > 0) {
name = strndup (expr, name_len);
//if it's a define, recursively expand its contents
if ((define = search_defines (name, search_local)) && define->contents != NULL) {
list_t *args = NULL;
if (define->num_args > 0) {
expr = parse_args (expr + name_len, define, &args);
if (!expr) {
free (name);
return;
}
} else {
expr += name_len;
}
expand_expr_full (define->contents, new_expr, depth + 1, search_local);
remove_arg_set (args);
if (error_occurred) return;
//if it's a label, write its value
} else if ((label = search_labels (name))) {
char buf[10];
snprintf (buf, sizeof(buf), "%d", label->value);
eb_append (new_expr, buf, -1);
expr += name_len;
//otherwise, it might be a forward ref, so just write the name
} else {
eb_append (new_expr, name, name_len);
expr += name_len;
}
free (name);
} else if (*expr) {
//if it can't be a name, just write the next char and move on
eb_append (new_expr, expr, 1);
expr++;
}
//skip past separators
block_start = expr;
while (*expr && strchr (separators, *expr))
expr++;
//write those
eb_append (new_expr, block_start, expr - block_start);
}
}
