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Merge branch 'print_preallocated'

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This commit is contained in:
Max Bruckner
2016-11-28 23:08:25 +07:00
parent 59cf4112d2 6622c54f18
commit bf17703012
4 changed files with 120 additions and 32 deletions
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107
test.c
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@ -22,6 +22,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cJSON.h"
/* Parse text to JSON, then render back to text, and print! */
@ -83,6 +84,63 @@ struct record
const char *country;
};
/* Create a bunch of objects as demonstration. */
int print_preallocated(cJSON *root)
{
/* declarations */
char *out = NULL;
char *buf = NULL;
char *buf_fail = NULL;
int len = 0;
int len_fail = 0;
/* formatted print */
out = cJSON_Print(root);
/* create buffer to succeed */
/* the extra 64 bytes are in case a floating point value is printed */
len = strlen(out) + 64;
buf = malloc(len);
/* create buffer to fail */
len_fail = strlen(out);
buf_fail = malloc(len_fail);
/* Print to buffer */
if (cJSON_PrintPreallocated(root, buf, len, 1) != 0) {
printf("cJSON_PrintPreallocated failed!\n");
if (strcmp(out, buf) != 0) {
printf("cJSON_PrintPreallocated not the same as cJSON_Print!\n");
printf("cJSON_Print result:\n%s\n", out);
printf("cJSON_PrintPreallocated result:\n%s\n", buf);
}
free(out);
free(buf_fail);
free(buf);
return -1;
}
/* success */
printf("%s\n", buf);
/* force it to fail */
if (cJSON_PrintPreallocated(root, buf_fail, len_fail, 1) == 0) {
printf("cJSON_PrintPreallocated failed to show error with insufficient memory!\n");
printf("cJSON_Print result:\n%s\n", out);
printf("cJSON_PrintPreallocated result:\n%s\n", buf_fail);
free(out);
free(buf_fail);
free(buf);
return -1;
}
free(out);
free(buf_fail);
free(buf);
return 0;
}
/* Create a bunch of objects as demonstration. */
static void create_objects(void)
{
@ -92,7 +150,6 @@ static void create_objects(void)
cJSON *img = NULL;
cJSON *thm = NULL;
cJSON *fld = NULL;
char *out = NULL;
int i = 0;
/* Our "days of the week" array: */
@ -154,21 +211,20 @@ static void create_objects(void)
cJSON_AddNumberToObject(fmt, "frame rate", 24);
/* Print to text */
out = cJSON_Print(root);
/* Delete the cJSON */
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
/* print it */
printf("%s\n",out);
/* release the string */
free(out);
/* Our "days of the week" array: */
root = cJSON_CreateStringArray(strings, 7);
out = cJSON_Print(root);
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
printf("%s\n", out);
free(out);
/* Our matrix: */
root = cJSON_CreateArray();
@ -179,11 +235,11 @@ static void create_objects(void)
/* cJSON_ReplaceItemInArray(root, 1, cJSON_CreateString("Replacement")); */
out = cJSON_Print(root);
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
printf("%s\n", out);
free(out);
/* Our "gallery" item: */
root = cJSON_CreateObject();
@ -197,13 +253,13 @@ static void create_objects(void)
cJSON_AddStringToObject(thm, "Width", "100");
cJSON_AddItemToObject(img, "IDs", cJSON_CreateIntArray(ids, 4));
out = cJSON_Print(root);
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
printf("%s\n", out);
free(out);
/* Our array of "records": */
root = cJSON_CreateArray();
for (i = 0; i < 2; i++)
{
@ -220,17 +276,20 @@ static void create_objects(void)
/* cJSON_ReplaceItemInObject(cJSON_GetArrayItem(root, 1), "City", cJSON_CreateIntArray(ids, 4)); */
out = cJSON_Print(root);
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
printf("%s\n", out);
free(out);
root = cJSON_CreateObject();
cJSON_AddNumberToObject(root, "number", 1.0 / zero);
out = cJSON_Print(root);
if (print_preallocated(root) != 0) {
cJSON_Delete(root);
exit(EXIT_FAILURE);
}
cJSON_Delete(root);
printf("%s\n", out);
free(out);
}
int main(void)