/*
- * Copyright (c) 2009 Petri Lehtinen <petri@digip.org>
+ * Copyright (c) 2009
, 2010 Petri Lehtinen <petri@digip.org>
*
* Jansson is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <stdint.h>
+#include <assert.h>
#include <jansson.h>
+#include "jansson_private.h"
#include "strbuffer.h"
+#include "utf.h"
#define MAX_INTEGER_STR_LENGTH 100
#define MAX_REAL_STR_LENGTH 100
/* 256 spaces (the maximum indentation size) */
static char whitespace[] = " ";
-static int dump_indent(unsigned long flags, int depth, dump_func dump, void *data)
+static int dump_indent(unsigned long flags, int depth, int space, dump_func dump, void *data)
{
if(JSON_INDENT(flags) > 0)
{
return -1;
}
}
+ else if(space && !(flags & JSON_COMPACT))
+ {
+ return dump(" ", 1, data);
+ }
return 0;
}
-static int dump_string(const char *str, dump_func dump, void *data)
+static int dump_string(const char *str, int ascii, dump_func dump, void *data)
{
- const char *end;
+ const char *pos, *end;
+ int32_t codepoint;
if(dump("\"", 1, data))
return -1;
- end = str;
+ end = pos = str;
while(1)
{
const char *text;
- char seq[7];
+ char seq[13];
int length;
- while(*end && *end != '\\' && *end != '"' && (unsigned char)*end > 0x1F)
- end++;
+ while(*end)
+ {
+ end = utf8_iterate(pos, &codepoint);
+ if(!end)
+ return -1;
+
+ /* mandatory escape or control char */
+ if(codepoint == '\\' || codepoint == '"' || codepoint < 0x20)
+ break;
+
+ /* non-ASCII */
+ if(ascii && codepoint > 0x7F)
+ break;
+
+ pos = end;
+ }
- if(end != str) {
- if(dump(str, end - str, data))
+ if(pos != str) {
+ if(dump(str, pos - str, data))
return -1;
}
- if(!*end)
+ if(end == pos)
break;
/* handle \, ", and control codes */
length = 2;
- switch(*end)
+ switch(codepoint)
{
case '\\': text = "\\\\"; break;
case '\"': text = "\\\""; break;
case '\t': text = "\\t"; break;
default:
{
- sprintf(seq, "\\u00%02x", *end);
+ /* codepoint is in BMP */
+ if(codepoint < 0x10000)
+ {
+ sprintf(seq, "\\u%04x", codepoint);
+ length = 6;
+ }
+
+ /* not in BMP -> construct a UTF-16 surrogate pair */
+ else
+ {
+ int32_t first, last;
+
+ codepoint -= 0x10000;
+ first = 0xD800 | ((codepoint & 0xffc00) >> 10);
+ last = 0xDC00 | (codepoint & 0x003ff);
+
+ sprintf(seq, "\\u%04x\\u%04x", first, last);
+ length = 12;
+ }
+
text = seq;
- length = 6;
break;
}
}
if(dump(text, length, data))
return -1;
- end++;
- str = end;
+ str = pos = end;
}
return dump("\"", 1, data);
}
+static int object_key_cmp(const void *key1, const void *key2)
+{
+ return strcmp(*(const char **)key1, *(const char **)key2);
+}
+
static int do_dump(const json_t *json, unsigned long flags, int depth,
dump_func dump, void *data)
{
+ int ascii = flags & JSON_ENSURE_ASCII ? 1 : 0;
+
switch(json_typeof(json)) {
case JSON_NULL:
return dump("null", 4, data);
char buffer[MAX_REAL_STR_LENGTH];
int size;
- size = snprintf(buffer, MAX_REAL_STR_LENGTH, "%0.17f", json_real_value(json));
+ size = snprintf(buffer, MAX_REAL_STR_LENGTH, "%.17g",
+ json_real_value(json));
if(size >= MAX_REAL_STR_LENGTH)
return -1;
+ /* Make sure there's a dot or 'e' in the output. Otherwise
+ a real is converted to an integer when decoding */
+ if(strchr(buffer, '.') == NULL &&
+ strchr(buffer, 'e') == NULL)
+ {
+ if(size + 2 >= MAX_REAL_STR_LENGTH) {
+ /* No space to append ".0" */
+ return -1;
+ }
+ buffer[size] = '.';
+ buffer[size + 1] = '0';
+ size += 2;
+ }
+
return dump(buffer, size, data);
}
case JSON_STRING:
- return dump_string(json_string_value(json), dump, data);
+ return dump_string(json_string_value(json), ascii, dump, data);
case JSON_ARRAY:
{
int i;
- int n = json_array_size(json);
+ int n;
+ json_array_t *array;
+
+ /* detect circular references */
+ array = json_to_array(json);
+ if(array->visited)
+ return -1;
+ array->visited = 1;
+
+ n = json_array_size(json);
if(dump("[", 1, data))
return -1;
if(n == 0)
return dump("]", 1, data);
- if(dump_indent(flags, depth + 1, dump, data))
+ if(dump_indent(flags, depth + 1, 0, dump, data))
return -1;
for(i = 0; i < n; ++i) {
if(i < n - 1)
{
if(dump(",", 1, data) ||
- dump_indent(flags, depth + 1, dump, data))
+ dump_indent(flags, depth + 1, 1, dump, data))
return -1;
}
else
{
- if(dump_indent(flags, depth, dump, data))
+ if(dump_indent(flags, depth, 0, dump, data))
return -1;
}
}
+
+ array->visited = 0;
return dump("]", 1, data);
}
case JSON_OBJECT:
{
- void *iter = json_object_iter((json_t *)json);
+ json_object_t *object;
+ void *iter;
+ const char *separator;
+ int separator_length;
+
+ if(flags & JSON_COMPACT) {
+ separator = ":";
+ separator_length = 1;
+ }
+ else {
+ separator = ": ";
+ separator_length = 2;
+ }
+
+ /* detect circular references */
+ object = json_to_object(json);
+ if(object->visited)
+ return -1;
+ object->visited = 1;
+
+ iter = json_object_iter((json_t *)json);
if(dump("{", 1, data))
return -1;
if(!iter)
return dump("}", 1, data);
- if(dump_indent(flags, depth + 1, dump, data))
+ if(dump_indent(flags, depth + 1, 0, dump, data))
return -1;
- while(iter)
+ if(flags & JSON_SORT_KEYS)
{
- void *next = json_object_iter_next((json_t *)json, iter);
+ /* Sort keys */
- dump_string(json_object_iter_key(iter), dump, data);
- if(dump(": ", 2, data) ||
- do_dump(json_object_iter_value(iter), flags, depth + 1,
- dump, data))
+ const char **keys;
+ unsigned int size;
+ unsigned int i;
+
+ size = json_object_size(json);
+ keys = malloc(size * sizeof(const char *));
+ if(!keys)
return -1;
- if(next)
+ i = 0;
+ while(iter)
{
- if(dump(",", 1, data) ||
- dump_indent(flags, depth + 1, dump, data))
- return -1;
+ keys[i] = json_object_iter_key(iter);
+ iter = json_object_iter_next((json_t *)json, iter);
+ i++;
}
- else
+ assert(i == size);
+
+ qsort(keys, size, sizeof(const char *), object_key_cmp);
+
+ for(i = 0; i < size; i++)
{
- if(dump_indent(flags, depth, dump, data))
+ const char *key;
+ json_t *value;
+
+ key = keys[i];
+ value = json_object_get(json, key);
+ assert(value);
+
+ dump_string(key, ascii, dump, data);
+ if(dump(separator, separator_length, data) ||
+ do_dump(value, flags, depth + 1, dump, data))
+ {
+ free(keys);
return -1;
+ }
+
+ if(i < size - 1)
+ {
+ if(dump(",", 1, data) ||
+ dump_indent(flags, depth + 1, 1, dump, data))
+ {
+ free(keys);
+ return -1;
+ }
+ }
+ else
+ {
+ if(dump_indent(flags, depth, 0, dump, data))
+ {
+ free(keys);
+ return -1;
+ }
+ }
}
- iter = next;
+ free(keys);
+ }
+ else
+ {
+ /* Don't sort keys */
+
+ while(iter)
+ {
+ void *next = json_object_iter_next((json_t *)json, iter);
+
+ dump_string(json_object_iter_key(iter), ascii, dump, data);
+ if(dump(separator, separator_length, data) ||
+ do_dump(json_object_iter_value(iter), flags, depth + 1,
+ dump, data))
+ return -1;
+
+ if(next)
+ {
+ if(dump(",", 1, data) ||
+ dump_indent(flags, depth + 1, 1, dump, data))
+ return -1;
+ }
+ else
+ {
+ if(dump_indent(flags, depth, 0, dump, data))
+ return -1;
+ }
+
+ iter = next;
+ }
}
+
+ object->visited = 0;
return dump("}", 1, data);
}
return NULL;
if(strbuffer_init(&strbuff))
- return NULL;
-
- if(do_dump(json, flags, 0, dump_to_strbuffer, (void *)&strbuff))
return NULL;
- if(dump_to_strbuffer("\n", 1, (void *)&strbuff))
+ if(do_dump(json, flags, 0, dump_to_strbuffer, (void *)&strbuff)) {
+ strbuffer_close(&strbuff);
return NULL;
+ }
result = strdup(strbuffer_value(&strbuff));
strbuffer_close(&strbuff);
if(!json_is_array(json) && !json_is_object(json))
return -1;
- if(do_dump(json, flags, 0, dump_to_file, (void *)output))
- return -1;
- return dump_to_file("\n", 1, (void *)output);
+ return do_dump(json, flags, 0, dump_to_file, (void *)output);
}
int json_dump_file(const json_t *json, const char *path, unsigned long flags)
projects / jansson.git / blobdiff