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Added cJSON_ParseWithLength (#358)

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Co-authored-by: Caglar Ivriz <caglar.ivriz@siemens.com>
This commit is contained in:
caglarivriz
2020-04-02 11:59:19 +03:00
committed by Alanscut
parent 3ece4c893c
commit 983bb2b4d6
4 changed files with 96 additions and 4 deletions
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33
cJSON.c
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@@ -983,6 +983,11 @@ static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
return NULL;
}
if (cannot_access_at_index(buffer, 0))
{
return buffer;
}
while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32))
{
buffer->offset++;
@@ -1012,8 +1017,23 @@ static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
return buffer;
}
/* Parse an object - create a new root, and populate. */
CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)
{
size_t buffer_length;
if (NULL == value)
{
return NULL;
}
/* Adding null character size due to require_null_terminated. */
buffer_length = strlen(value) + sizeof("");
return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated);
}
/* Parse an object - create a new root, and populate. */
CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated)
{
parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } };
cJSON *item = NULL;
@@ -1022,13 +1042,13 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return
global_error.json = NULL;
global_error.position = 0;
if (value == NULL)
if (value == NULL || 0 == buffer_length)
{
goto fail;
}
buffer.content = (const unsigned char*)value;
buffer.length = strlen((const char*)value) + sizeof("");
buffer.length = buffer_length;
buffer.offset = 0;
buffer.hooks = global_hooks;
@@ -1098,7 +1118,12 @@ CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value)
return cJSON_ParseWithOpts(value, 0, 0);
}
#define cjson_min(a, b) ((a < b) ? a : b)
CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length)
{
return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0);
}
#define cjson_min(a, b) (((a) < (b)) ? (a) : (b))
static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks)
{