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#include "asn1fix_internal.h"
struct _cstring_pattern {
char *start;
size_t length;
};
static int _asn1f_cstring_find_line_pattern(char *s, struct _cstring_pattern *);
int
asn1f_fix_cstring(arg_t *arg) {
asn1p_expr_t *expr = arg->expr;
int r_value = 0;
if(expr->value && expr->value->type == ATV_STRING) {
struct _cstring_pattern cp;
char *buf = expr->value->value.string.buf;
int buflen = expr->value->value.string.size;
int start = 0;
DEBUG("(%s) for line %d", expr->Identifier, expr->_lineno);
while(_asn1f_cstring_find_line_pattern(buf + start, &cp)) {
assert(cp.length);
memmove(cp.start, cp.start + cp.length,
buflen - ((cp.start + cp.length) - buf));
buflen -= cp.length;
start = cp.start - buf;
buf[buflen] = '\0';
}
}
return r_value;
}
/*
* If a string has a newline, the tabulation and spaces before and
* after it must be eliminated.
*/
static int
_asn1f_cstring_find_line_pattern(char *s, struct _cstring_pattern *cp) {
int newline_found = 0;
cp->start = NULL;
for(;;s++) {
switch(*s) {
case '\r': case '\n':
newline_found = 1;
/* Fall through */
case ' ': case '\t':
if(cp->start == NULL)
cp->start = s;
continue;
case '\0':
default:
if(newline_found) {
cp->length = (size_t)(s - cp->start);
return 1;
}
cp->start = NULL;
if(*s == '\0')
break;
continue;
}
break;
}
return 0;
}
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