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Replace find_next_number with a regex version to be less obscure.

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Rot127 2024-02-15 07:04:18 -05:00 committed by Anton Kochkov
parent 18a4d71492
commit d702d2bc0d
1 changed files with 26 additions and 60 deletions
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86
librz/parse/filter.c
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@ -81,67 +81,33 @@ static void replaceWords(char *s, const char *k, const char *v) {
}
}
static char *findNextNumber(char *op) {
if (!op) {
/**
* \brief Returns a pointer to the next number in the string.
* This function ignores numbers from ansi excape codes.
*
* \param str The string to search the number in.
*
* \return Pointer into \p str there the number starts or NULL if not found or a failure occured.
*/
static char *find_next_number(char *str) {
rz_return_val_if_fail(str, NULL);
bool ansi = false;
if (rz_regex_contains("\x1b\\[[0-9;]*m", str, RZ_REGEX_ZERO_TERMINATED, RZ_REGEX_EXTENDED, 0)) {
ansi = true;
}
const char *search = ansi ? "(\x1b\\[[0-9;]*m)(?<number>(0x[a-fA-F0-9]+)|\\d+)" : "(\\W(?<number>(0x[a-fA-F0-9]+)|\\d+))";
RzRegex *re = rz_regex_new(search, RZ_REGEX_EXTENDED, RZ_REGEX_DEFAULT);
RzPVector *match = rz_regex_match_first(re, str, RZ_REGEX_ZERO_TERMINATED, 0, RZ_REGEX_DEFAULT);
if (rz_pvector_empty(match)) {
rz_pvector_free(match);
rz_regex_free(re);
return NULL;
}
bool ansi_found = false;
char *p = op;
const char *o = NULL;
while (*p) {
if (p[0] == 0x1b && p[1] == '[') {
ansi_found = true;
p += 2;
for (; *p && *p != 'J' && *p != 'm' && *p != 'H'; p++) {
;
}
if (*p) {
p++;
if (!*p) {
break;
}
}
o = p - 1;
} else {
bool isSpace = ansi_found;
ansi_found = false;
if (!isSpace) {
isSpace = p == op;
if (!isSpace && o) {
isSpace = (*o == ' ' || *o == ',' || *o == '[');
}
}
if (*p == '[') {
p++;
if (!*p) {
break;
}
if (!IS_DIGIT(*p)) {
char *t = p;
for (; *t && *t != ']'; t++) {
;
}
if (*t == ']') {
continue;
}
p = t;
if (!*p) {
break;
}
}
}
if (isSpace) {
if (IS_DIGIT(*p)) {
return p;
}
if ((*p == '-') && IS_DIGIT(p[1])) {
return p + 1;
}
}
o = p++;
}
}
return NULL;
RzRegexMatch *m = rz_pvector_at(match, rz_regex_get_group_idx_by_name(re, "number"));
char *number_ptr = str + m->start;
rz_pvector_free(match);
rz_regex_free(re);
return number_ptr;
}
static void __replaceRegisters(RzReg *reg, char *s, bool x86) {
@ -223,7 +189,7 @@ static bool filter(RzParse *p, ut64 addr, RzFlag *f, RzAnalysisHint *hint, char
// remove "dword" 2
char *nptr;
int count = 0;
for (count = 0; (nptr = findNextNumber(ptr)); count++) {
for (count = 0; (nptr = find_next_number(ptr)); count++) {
ptr = nptr;
// Skip floats