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json: strip spaces and special chars when copying objects

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When turning an object into a string, strip out all special chars
and duplicate spaces.
This commit is contained in:
Wim Taymans 2021-02-06 20:20:26 +01:00
parent f1e56b2317
commit 0be2959f11
1 changed files with 37 additions and 23 deletions
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60
spa/include/spa/utils/json.h
View file

@ -287,31 +287,45 @@ static inline int spa_json_parse_string(const char *val, int len, char *result)
{
const char *p;
if (!spa_json_is_string(val, len)) {
strncpy(result, val, len);
result[len] = '\0';
return 1;
}
for (p = val+1; p < val + len; p++) {
if (*p == '\\') {
p++;
if (*p == 'n')
*result++ = '\n';
else if (*p == 'r')
*result++ = '\r';
else if (*p == 'b')
*result++ = '\b';
else if (*p == 't')
*result++ = '\t';
else if (*p == 'f')
*result++ = '\f';
else
bool skip = false;
for (p = val; p < val + len; p++) {
switch (*p) {
case '\n': case '\r': case '\b': case '\t': case '\f':
break;
case ' ':
if (!skip)
*result++ = *p;
skip = true;
break;
default:
*result++ = *p;
} else if (*p == '\"') {
break;
} else
*result++ = *p;
skip = false;
break;
}
}
} else {
for (p = val+1; p < val + len; p++) {
if (*p == '\\') {
p++;
if (*p == 'n')
*result++ = '\n';
else if (*p == 'r')
*result++ = '\r';
else if (*p == 'b')
*result++ = '\b';
else if (*p == 't')
*result++ = '\t';
else if (*p == 'f')
*result++ = '\f';
else
*result++ = *p;
} else if (*p == '\"') {
break;
} else
*result++ = *p;
}
}
*result++ = '\0';
*result = '\0';
return 1;
}