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cJSON_ConfigurationChangeParseEnd

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Add a pointer to an end position of parsing to the cJSON_Configuration
object. (Essentially like return_parse_end, but as offset instead of
pointer).
This commit is contained in:
Max Bruckner 2018-02-02 00:57:00 +01:00
parent 9d801d64ea
commit 88c39fa2e4
4 changed files with 44 additions and 8 deletions
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33
cJSON.c
View File

@ -128,6 +128,7 @@ typedef struct internal_configuration
cJSON_bool case_sensitive;
cJSON_Allocators allocators;
void *userdata;
size_t *end_position;
} internal_configuration;
#if defined(_MSC_VER)
@ -192,7 +193,8 @@ static void deallocate(const internal_configuration * const configuration, void
global_deallocate_wrapper,\
global_reallocate_wrapper\
},\
NULL /* no userdata */\
NULL, /* no userdata */\
NULL /* no end position */\
}
/* this is necessary to assign the default configuration after initialization */
@ -1058,7 +1060,7 @@ static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
}
/* Parse an object - create a new root, and populate. */
static cJSON *parse(const char * const json, const internal_configuration * const configuration, size_t *end_position)
static cJSON *parse(const char * const json, const internal_configuration * const configuration)
{
parse_buffer buffer = { 0, 0, 0, 0, default_configuration };
cJSON *item = NULL;
@ -1097,7 +1099,10 @@ static cJSON *parse(const char * const json, const internal_configuration * cons
goto fail;
}
}
*end_position = buffer.offset;
if (configuration->end_position != NULL)
{
*configuration->end_position = buffer.offset;
}
return item;
@ -1122,7 +1127,10 @@ fail:
local_error.position = buffer.length - 1;
}
*end_position = local_error.position;
if (configuration->end_position != NULL)
{
*configuration->end_position = local_error.position;
}
global_error = local_error;
}
@ -1137,7 +1145,8 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *json, const char **return_
cJSON *item = NULL;
configuration.allow_data_after_json = !require_null_terminated;
item = parse(json, &configuration, &end_position);
configuration.end_position = &end_position;
item = parse(json, &configuration);
if (return_parse_end != NULL)
{
@ -1150,8 +1159,7 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *json, const char **return_
/* Default options for cJSON_Parse */
CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *json)
{
size_t end_position = 0;
return parse(json, &global_configuration, &end_position);
return parse(json, &global_configuration);
}
#define cjson_min(a, b) (((a) < (b)) ? (a) : (b))
@ -3012,6 +3020,17 @@ CJSON_PUBLIC(cJSON_Configuration) cJSON_ConfigurationChangeUserdata(cJSON_Config
return configuration;
}
CJSON_PUBLIC(cJSON_Configuration) cJSON_ConfigurationChangeParseEnd(cJSON_Configuration configuration, size_t * const parse_end)
{
if (configuration == NULL)
{
return NULL;
}
((internal_configuration*)configuration)->end_position = parse_end;
return configuration;
}
static cJSON_bool compare(const cJSON * const a, const cJSON * const b, const internal_configuration * const configuration)
{
if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)) || cJSON_IsInvalid(a))

2
cJSON.h
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@ -179,6 +179,8 @@ CJSON_PUBLIC(cJSON_Configuration) cJSON_CreateConfiguration(const cJSON * const
CJSON_PUBLIC(cJSON_Configuration) cJSON_ConfigurationChangeAllocators(cJSON_Configuration configuration, const cJSON_Allocators allocators);
/* Change the allocator userdata attached to a cJSON_Configuration */
CJSON_PUBLIC(cJSON_Configuration) cJSON_ConfigurationChangeUserdata(cJSON_Configuration configuration, void *userdata);
/* Change the pointer where the end of parsing is written to */
CJSON_PUBLIC(cJSON_Configuration) cJSON_ConfigurationChangeParseEnd(cJSON_Configuration configuration, size_t * const parse_end);
/* Supply malloc and free functions to cJSON globally */
CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);

15
tests/configuration_tests.c
View File

@ -129,6 +129,20 @@ static void configuration_change_userdata_should_change_userdata(void)
free(configuration);
}
static void configuration_change_parse_end_should_change_parse_end(void)
{
size_t end_position = 0;
internal_configuration *configuration = (internal_configuration*)cJSON_CreateConfiguration(NULL, NULL, NULL);
TEST_ASSERT_NOT_NULL(configuration);
configuration = (internal_configuration*)cJSON_ConfigurationChangeParseEnd(configuration, &end_position);
TEST_ASSERT_NOT_NULL(configuration);
TEST_ASSERT_TRUE_MESSAGE(configuration->end_position == &end_position, "Failed to set parse end.");
free(configuration);
}
int main(void)
{
UNITY_BEGIN();
@ -138,6 +152,7 @@ int main(void)
RUN_TEST(create_configuration_should_take_custom_allocators);
RUN_TEST(configuration_change_allocators_should_change_allocators);
RUN_TEST(configuration_change_userdata_should_change_userdata);
RUN_TEST(configuration_change_parse_end_should_change_parse_end);
return UNITY_END();
}

2
tests/misc_tests.c
View File

@ -419,7 +419,7 @@ static void *failing_realloc(void *pointer, size_t size, void *userdata)
static void ensure_should_fail_on_failed_realloc(void)
{
printbuffer buffer = {NULL, 10, 0, 0, false, {256, false, true, true, {global_allocate_wrapper, global_deallocate_wrapper, failing_realloc}, NULL } };
printbuffer buffer = {NULL, 10, 0, 0, false, {256, false, true, true, {global_allocate_wrapper, global_deallocate_wrapper, failing_realloc}, NULL, NULL } };
buffer.configuration.userdata = &buffer;
buffer.buffer = (unsigned char*)malloc(100);
TEST_ASSERT_NOT_NULL(buffer.buffer);