Merge pull request #29993 from bruvzg/vulkan

Initial Vulkan support for macOS (MoltenVK) and Windows

1 files changed, 1215 insertions, 0 deletions

diff --git a/thirdparty/vulkan/loader/cJSON.c b/thirdparty/vulkan/loader/cJSON.c
new file mode 100755
index 0000000000..8da6d83c32
--- /dev/null
+++ b/thirdparty/vulkan/loader/cJSON.c
@@ -0,0 +1,1215 @@
+/*
+  Copyright (c) 2009 Dave Gamble
+  Copyright (c) 2015-2016 The Khronos Group Inc.
+  Copyright (c) 2015-2016 Valve Corporation
+  Copyright (c) 2015-2016 LunarG, Inc.
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+/* cJSON */
+/* JSON parser in C. */
+
+#include <string.h>
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+#include <float.h>
+#include <limits.h>
+#include <ctype.h>
+#include "cJSON.h"
+
+static const char *ep;
+
+const char *cJSON_GetErrorPtr(void) { return ep; }
+
+static void *(*cJSON_malloc)(size_t sz) = malloc;
+static void (*cJSON_free)(void *ptr) = free;
+
+static char *cJSON_strdup(const char *str) {
+    size_t len;
+    char *copy;
+
+    len = strlen(str) + 1;
+    if (!(copy = (char *)cJSON_malloc(len))) return 0;
+    memcpy(copy, str, len);
+    return copy;
+}
+
+void cJSON_InitHooks(cJSON_Hooks *hooks) {
+    if (!hooks) { /* Reset hooks */
+        cJSON_malloc = malloc;
+        cJSON_free = free;
+        return;
+    }
+
+    cJSON_malloc = (hooks->malloc_fn) ? hooks->malloc_fn : malloc;
+    cJSON_free = (hooks->free_fn) ? hooks->free_fn : free;
+}
+
+/* Internal constructor. */
+static cJSON *cJSON_New_Item(void) {
+    cJSON *node = (cJSON *)cJSON_malloc(sizeof(cJSON));
+    if (node) memset(node, 0, sizeof(cJSON));
+    return node;
+}
+
+/* Delete a cJSON structure. */
+void cJSON_Delete(cJSON *c) {
+    cJSON *next;
+    while (c) {
+        next = c->next;
+        if (!(c->type & cJSON_IsReference) && c->child) cJSON_Delete(c->child);
+        if (!(c->type & cJSON_IsReference) && c->valuestring) cJSON_free(c->valuestring);
+        if (!(c->type & cJSON_StringIsConst) && c->string) cJSON_free(c->string);
+        cJSON_free(c);
+        c = next;
+    }
+}
+
+void cJSON_Free(void *p) { cJSON_free(p); }
+
+/* Parse the input text to generate a number, and populate the result into item.
+ */
+static const char *parse_number(cJSON *item, const char *num) {
+    double n = 0, sign = 1, scale = 0;
+    int subscale = 0, signsubscale = 1;
+
+    if (*num == '-') sign = -1, num++; /* Has sign? */
+    if (*num == '0') num++;            /* is zero */
+    if (*num >= '1' && *num <= '9') do
+            n = (n * 10.0) + (*num++ - '0');
+        while (*num >= '0' && *num <= '9'); /* Number? */
+    if (*num == '.' && num[1] >= '0' && num[1] <= '9') {
+        num++;
+        do
+            n = (n * 10.0) + (*num++ - '0'), scale--;
+        while (*num >= '0' && *num <= '9');
+    }                               /* Fractional part? */
+    if (*num == 'e' || *num == 'E') /* Exponent? */
+    {
+        num++;
+        if (*num == '+')
+            num++;
+        else if (*num == '-')
+            signsubscale = -1, num++;                                                   /* With sign? */
+        while (*num >= '0' && *num <= '9') subscale = (subscale * 10) + (*num++ - '0'); /* Number? */
+    }
+
+    n = sign * n * pow(10.0, (scale + subscale * signsubscale)); /* number = +/-
+                                                                    number.fraction *
+                                                                    10^+/- exponent */
+
+    item->valuedouble = n;
+    item->valueint = (int)n;
+    item->type = cJSON_Number;
+    return num;
+}
+
+static size_t pow2gt(size_t x) {
+    --x;
+    x |= x >> 1;
+    x |= x >> 2;
+    x |= x >> 4;
+    x |= x >> 8;
+    x |= x >> 16;
+    return x + 1;
+}
+
+typedef struct {
+    char *buffer;
+    size_t length;
+    size_t offset;
+} printbuffer;
+
+static char *ensure(printbuffer *p, size_t needed) {
+    char *newbuffer;
+    size_t newsize;
+    if (!p || !p->buffer) return 0;
+    needed += p->offset;
+    if (needed <= p->length) return p->buffer + p->offset;
+
+    newsize = pow2gt(needed);
+    newbuffer = (char *)cJSON_malloc(newsize);
+    if (!newbuffer) {
+        cJSON_free(p->buffer);
+        p->length = 0, p->buffer = 0;
+        return 0;
+    }
+    if (newbuffer) memcpy(newbuffer, p->buffer, p->length);
+    cJSON_free(p->buffer);
+    p->length = newsize;
+    p->buffer = newbuffer;
+    return newbuffer + p->offset;
+}
+
+static size_t update(printbuffer *p) {
+    char *str;
+    if (!p || !p->buffer) return 0;
+    str = p->buffer + p->offset;
+    return p->offset + strlen(str);
+}
+
+/* Render the number nicely from the given item into a string. */
+static char *print_number(cJSON *item, printbuffer *p) {
+    char *str = 0;
+    double d = item->valuedouble;
+    if (d == 0) {
+        if (p)
+            str = ensure(p, 2);
+        else
+            str = (char *)cJSON_malloc(2); /* special case for 0. */
+        if (str) strcpy(str, "0");
+    } else if (fabs(((double)item->valueint) - d) <= DBL_EPSILON && d <= INT_MAX && d >= INT_MIN) {
+        if (p)
+            str = ensure(p, 21);
+        else
+            str = (char *)cJSON_malloc(21); /* 2^64+1 can be represented in 21 chars. */
+        if (str) sprintf(str, "%d", item->valueint);
+    } else {
+        if (p)
+            str = ensure(p, 64);
+        else
+            str = (char *)cJSON_malloc(64); /* This is a nice tradeoff. */
+        if (str) {
+            if (fabs(floor(d) - d) <= DBL_EPSILON && fabs(d) < 1.0e60)
+                sprintf(str, "%.0f", d);
+            else if (fabs(d) < 1.0e-6 || fabs(d) > 1.0e9)
+                sprintf(str, "%e", d);
+            else
+                sprintf(str, "%f", d);
+        }
+    }
+    return str;
+}
+
+static unsigned parse_hex4(const char *str) {
+    unsigned h = 0;
+    if (*str >= '0' && *str <= '9')
+        h += (*str) - '0';
+    else if (*str >= 'A' && *str <= 'F')
+        h += 10 + (*str) - 'A';
+    else if (*str >= 'a' && *str <= 'f')
+        h += 10 + (*str) - 'a';
+    else
+        return 0;
+    h = h << 4;
+    str++;
+    if (*str >= '0' && *str <= '9')
+        h += (*str) - '0';
+    else if (*str >= 'A' && *str <= 'F')
+        h += 10 + (*str) - 'A';
+    else if (*str >= 'a' && *str <= 'f')
+        h += 10 + (*str) - 'a';
+    else
+        return 0;
+    h = h << 4;
+    str++;
+    if (*str >= '0' && *str <= '9')
+        h += (*str) - '0';
+    else if (*str >= 'A' && *str <= 'F')
+        h += 10 + (*str) - 'A';
+    else if (*str >= 'a' && *str <= 'f')
+        h += 10 + (*str) - 'a';
+    else
+        return 0;
+    h = h << 4;
+    str++;
+    if (*str >= '0' && *str <= '9')
+        h += (*str) - '0';
+    else if (*str >= 'A' && *str <= 'F')
+        h += 10 + (*str) - 'A';
+    else if (*str >= 'a' && *str <= 'f')
+        h += 10 + (*str) - 'a';
+    else
+        return 0;
+    return h;
+}
+
+/* Parse the input text into an unescaped cstring, and populate item. */
+static const unsigned char firstByteMark[7] = {0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC};
+static const char *parse_string(cJSON *item, const char *str) {
+    const char *ptr = str + 1;
+    char *ptr2;
+    char *out;
+    int len = 0;
+    unsigned uc, uc2;
+    if (*str != '\"') {
+        ep = str;
+        return 0;
+    } /* not a string! */
+
+    while (*ptr != '\"' && *ptr && ++len)
+        if (*ptr++ == '\\') ptr++; /* Skip escaped quotes. */
+
+    out = (char *)cJSON_malloc(len + 1); /* This is how long we need for the string, roughly. */
+    if (!out) return 0;
+
+    ptr = str + 1;
+    ptr2 = out;
+    while (*ptr != '\"' && *ptr) {
+        if (*ptr != '\\')
+            *ptr2++ = *ptr++;
+        else {
+            ptr++;
+            switch (*ptr) {
+                case 'b':
+                    *ptr2++ = '\b';
+                    break;
+                case 'f':
+                    *ptr2++ = '\f';
+                    break;
+                case 'n':
+                    *ptr2++ = '\n';
+                    break;
+                case 'r':
+                    *ptr2++ = '\r';
+                    break;
+                case 't':
+                    *ptr2++ = '\t';
+                    break;
+                case 'u': /* transcode utf16 to utf8. */
+                    uc = parse_hex4(ptr + 1);
+                    ptr += 4; /* get the unicode char. */
+
+                    if ((uc >= 0xDC00 && uc <= 0xDFFF) || uc == 0) break; /* check for invalid.	*/
+
+                    if (uc >= 0xD800 && uc <= 0xDBFF) /* UTF16 surrogate pairs.	*/
+                    {
+                        if (ptr[1] != '\\' || ptr[2] != 'u') break; /* missing second-half of surrogate.	*/
+                        uc2 = parse_hex4(ptr + 3);
+                        ptr += 6;
+                        if (uc2 < 0xDC00 || uc2 > 0xDFFF) break; /* invalid second-half of surrogate.	*/
+                        uc = 0x10000 + (((uc & 0x3FF) << 10) | (uc2 & 0x3FF));
+                    }
+
+                    len = 4;
+                    if (uc < 0x80)
+                        len = 1;
+                    else if (uc < 0x800)
+                        len = 2;
+                    else if (uc < 0x10000)
+                        len = 3;
+                    ptr2 += len;
+
+                    switch (len) {
+                        case 4:
+                            *--ptr2 = ((uc | 0x80) & 0xBF);
+                            uc >>= 6;
+                            // fall through
+                        case 3:
+                            *--ptr2 = ((uc | 0x80) & 0xBF);
+                            uc >>= 6;
+                            // fall through
+                        case 2:
+                            *--ptr2 = ((uc | 0x80) & 0xBF);
+                            uc >>= 6;
+                            // fall through
+                        case 1:
+                            *--ptr2 = ((unsigned char)uc | firstByteMark[len]);
+                    }
+                    ptr2 += len;
+                    break;
+                default:
+                    *ptr2++ = *ptr;
+                    break;
+            }
+            ptr++;
+        }
+    }
+    *ptr2 = 0;
+    if (*ptr == '\"') ptr++;
+    item->valuestring = out;
+    item->type = cJSON_String;
+    return ptr;
+}
+
+/* Render the cstring provided to an escaped version that can be printed. */
+static char *print_string_ptr(const char *str, printbuffer *p) {
+    const char *ptr;
+    char *ptr2;
+    char *out;
+    size_t len = 0, flag = 0;
+    unsigned char token;
+
+    for (ptr = str; *ptr; ptr++) flag |= ((*ptr > 0 && *ptr < 32) || (*ptr == '\"') || (*ptr == '\\')) ? 1 : 0;
+    if (!flag) {
+        len = ptr - str;
+        if (p)
+            out = ensure(p, len + 3);
+        else
+            out = (char *)cJSON_malloc(len + 3);
+        if (!out) return 0;
+        ptr2 = out;
+        *ptr2++ = '\"';
+        strcpy(ptr2, str);
+        ptr2[len] = '\"';
+        ptr2[len + 1] = 0;
+        return out;
+    }
+
+    if (!str) {
+        if (p)
+            out = ensure(p, 3);
+        else
+            out = (char *)cJSON_malloc(3);
+        if (!out) return 0;
+        strcpy(out, "\"\"");
+        return out;
+    }
+    ptr = str;
+    while ((token = *ptr) && ++len) {
+        if (strchr("\"\\\b\f\n\r\t", token))
+            len++;
+        else if (token < 32)
+            len += 5;
+        ptr++;
+    }
+
+    if (p)
+        out = ensure(p, len + 3);
+    else
+        out = (char *)cJSON_malloc(len + 3);
+    if (!out) return 0;
+
+    ptr2 = out;
+    ptr = str;
+    *ptr2++ = '\"';
+    while (*ptr) {
+        if ((unsigned char)*ptr > 31 && *ptr != '\"' && *ptr != '\\')
+            *ptr2++ = *ptr++;
+        else {
+            switch (token = *ptr++) {
+                case '\\':
+                    *ptr2++ = '\\';
+                    break;
+                case '\"':
+                    *ptr2++ = '\"';
+                    break;
+                case '\b':
+                    *ptr2++ = '\b';
+                    break;
+                case '\f':
+                    *ptr2++ = '\f';
+                    break;
+                case '\n':
+                    *ptr2++ = '\n';
+                    break;
+                case '\r':
+                    *ptr2++ = '\r';
+                    break;
+                case '\t':
+                    *ptr2++ = '\t';
+                    break;
+                default:
+                    sprintf(ptr2, "u%04x", token);
+                    ptr2 += 5;
+                    break; /* escape and print */
+            }
+        }
+    }
+    *ptr2++ = '\"';
+    *ptr2++ = 0;
+    return out;
+}
+/* Invote print_string_ptr (which is useful) on an item. */
+static char *print_string(cJSON *item, printbuffer *p) { return print_string_ptr(item->valuestring, p); }
+
+/* Predeclare these prototypes. */
+static const char *parse_value(cJSON *item, const char *value);
+static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p);
+static const char *parse_array(cJSON *item, const char *value);
+static char *print_array(cJSON *item, int depth, int fmt, printbuffer *p);
+static const char *parse_object(cJSON *item, const char *value);
+static char *print_object(cJSON *item, int depth, int fmt, printbuffer *p);
+
+/* Utility to jump whitespace and cr/lf */
+static const char *skip(const char *in) {
+    while (in && *in && (unsigned char)*in <= 32) in++;
+    return in;
+}
+
+/* Parse an object - create a new root, and populate. */
+cJSON *cJSON_ParseWithOpts(const char *value, const char **return_parse_end, int require_null_terminated) {
+    const char *end = 0;
+    cJSON *c = cJSON_New_Item();
+    ep = 0;
+    if (!c) return 0; /* memory fail */
+
+    end = parse_value(c, skip(value));
+    if (!end) {
+        cJSON_Delete(c);
+        return 0;
+    } /* parse failure. ep is set. */
+
+    /* if we require null-terminated JSON without appended garbage, skip and
+     * then check for a null terminator */
+    if (require_null_terminated) {
+        end = skip(end);
+        if (*end) {
+            cJSON_Delete(c);
+            ep = end;
+            return 0;
+        }
+    }
+    if (return_parse_end) *return_parse_end = end;
+    return c;
+}
+/* Default options for cJSON_Parse */
+cJSON *cJSON_Parse(const char *value) { return cJSON_ParseWithOpts(value, 0, 0); }
+
+/* Render a cJSON item/entity/structure to text. */
+char *cJSON_Print(cJSON *item) { return print_value(item, 0, 1, 0); }
+char *cJSON_PrintUnformatted(cJSON *item) { return print_value(item, 0, 0, 0); }
+
+char *cJSON_PrintBuffered(cJSON *item, int prebuffer, int fmt) {
+    printbuffer p;
+    p.buffer = (char *)cJSON_malloc(prebuffer);
+    p.length = prebuffer;
+    p.offset = 0;
+    return print_value(item, 0, fmt, &p);
+}
+
+/* Parser core - when encountering text, process appropriately. */
+static const char *parse_value(cJSON *item, const char *value) {
+    if (!value) return 0; /* Fail on null. */
+    if (!strncmp(value, "null", 4)) {
+        item->type = cJSON_NULL;
+        return value + 4;
+    }
+    if (!strncmp(value, "false", 5)) {
+        item->type = cJSON_False;
+        return value + 5;
+    }
+    if (!strncmp(value, "true", 4)) {
+        item->type = cJSON_True;
+        item->valueint = 1;
+        return value + 4;
+    }
+    if (*value == '\"') {
+        return parse_string(item, value);
+    }
+    if (*value == '-' || (*value >= '0' && *value <= '9')) {
+        return parse_number(item, value);
+    }
+    if (*value == '[') {
+        return parse_array(item, value);
+    }
+    if (*value == '{') {
+        return parse_object(item, value);
+    }
+
+    ep = value;
+    return 0; /* failure. */
+}
+
+/* Render a value to text. */
+static char *print_value(cJSON *item, int depth, int fmt, printbuffer *p) {
+    char *out = 0;
+    if (!item) return 0;
+    if (p) {
+        switch ((item->type) & 255) {
+            case cJSON_NULL: {
+                out = ensure(p, 5);
+                if (out) strcpy(out, "null");
+                break;
+            }
+            case cJSON_False: {
+                out = ensure(p, 6);
+                if (out) strcpy(out, "false");
+                break;
+            }
+            case cJSON_True: {
+                out = ensure(p, 5);
+                if (out) strcpy(out, "true");
+                break;
+            }
+            case cJSON_Number:
+                out = print_number(item, p);
+                break;
+            case cJSON_String:
+                out = print_string(item, p);
+                break;
+            case cJSON_Array:
+                out = print_array(item, depth, fmt, p);
+                break;
+            case cJSON_Object:
+                out = print_object(item, depth, fmt, p);
+                break;
+        }
+    } else {
+        switch ((item->type) & 255) {
+            case cJSON_NULL:
+                out = cJSON_strdup("null");
+                break;
+            case cJSON_False:
+                out = cJSON_strdup("false");
+                break;
+            case cJSON_True:
+                out = cJSON_strdup("true");
+                break;
+            case cJSON_Number:
+                out = print_number(item, 0);
+                break;
+            case cJSON_String:
+                out = print_string(item, 0);
+                break;
+            case cJSON_Array:
+                out = print_array(item, depth, fmt, 0);
+                break;
+            case cJSON_Object:
+                out = print_object(item, depth, fmt, 0);
+                break;
+        }
+    }
+    return out;
+}
+
+/* Build an array from input text. */
+static const char *parse_array(cJSON *item, const char *value) {
+    cJSON *child;
+    if (*value != '[') {
+        ep = value;
+        return 0;
+    } /* not an array! */
+
+    item->type = cJSON_Array;
+    value = skip(value + 1);
+    if (*value == ']') return value + 1; /* empty array. */
+
+    item->child = child = cJSON_New_Item();
+    if (!item->child) return 0;                    /* memory fail */
+    value = skip(parse_value(child, skip(value))); /* skip any spacing, get the value. */
+    if (!value) return 0;
+
+    while (*value == ',') {
+        cJSON *new_item;
+        if (!(new_item = cJSON_New_Item())) return 0; /* memory fail */
+        child->next = new_item;
+        new_item->prev = child;
+        child = new_item;
+        value = skip(parse_value(child, skip(value + 1)));
+        if (!value) return 0; /* memory fail */
+    }
+
+    if (*value == ']') return value + 1; /* end of array */
+    ep = value;
+    return 0; /* malformed. */
+}
+
+/* Render an array to text */
+static char *print_array(cJSON *item, int depth, int fmt, printbuffer *p) {
+    char **entries;
+    char *out = 0, *ptr, *ret;
+    size_t len = 5;
+    cJSON *child = item->child;
+    int numentries = 0, fail = 0, j = 0;
+    size_t tmplen = 0, i = 0;
+
+    /* How many entries in the array? */
+    while (child) numentries++, child = child->next;
+    /* Explicitly handle numentries==0 */
+    if (!numentries) {
+        if (p)
+            out = ensure(p, 3);
+        else
+            out = (char *)cJSON_malloc(3);
+        if (out) strcpy(out, "[]");
+        return out;
+    }
+
+    if (p) {
+        /* Compose the output array. */
+        i = p->offset;
+        ptr = ensure(p, 1);
+        if (!ptr) return 0;
+        *ptr = '[';
+        p->offset++;
+        child = item->child;
+        while (child && !fail) {
+            print_value(child, depth + 1, fmt, p);
+            p->offset = update(p);
+            if (child->next) {
+                len = fmt ? 2 : 1;
+                ptr = ensure(p, len + 1);
+                if (!ptr) return 0;
+                *ptr++ = ',';
+                if (fmt) *ptr++ = ' ';
+                *ptr = 0;
+                p->offset += len;
+            }
+            child = child->next;
+        }
+        ptr = ensure(p, 2);
+        if (!ptr) return 0;
+        *ptr++ = ']';
+        *ptr = 0;
+        out = (p->buffer) + i;
+    } else {
+        /* Allocate an array to hold the values for each */
+        entries = (char **)cJSON_malloc(numentries * sizeof(char *));
+        if (!entries) return 0;
+        memset(entries, 0, numentries * sizeof(char *));
+        /* Retrieve all the results: */
+        child = item->child;
+        while (child && !fail) {
+            ret = print_value(child, depth + 1, fmt, 0);
+            entries[i++] = ret;
+            if (ret)
+                len += strlen(ret) + 2 + (fmt ? 1 : 0);
+            else
+                fail = 1;
+            child = child->next;
+        }
+
+        /* If we didn't fail, try to malloc the output string */
+        if (!fail) out = (char *)cJSON_malloc(len);
+        /* If that fails, we fail. */
+        if (!out) fail = 1;
+
+        /* Handle failure. */
+        if (fail) {
+            for (j = 0; j < numentries; j++)
+                if (entries[j]) cJSON_free(entries[j]);
+            cJSON_free(entries);
+            return 0;
+        }
+
+        /* Compose the output array. */
+        *out = '[';
+        ptr = out + 1;
+        *ptr = 0;
+        for (j = 0; j < numentries; j++) {
+            tmplen = strlen(entries[j]);
+            memcpy(ptr, entries[j], tmplen);
+            ptr += tmplen;
+            if (j != numentries - 1) {
+                *ptr++ = ',';
+                if (fmt) *ptr++ = ' ';
+                *ptr = 0;
+            }
+            cJSON_free(entries[j]);
+        }
+        cJSON_free(entries);
+        *ptr++ = ']';
+        *ptr++ = 0;
+    }
+    return out;
+}
+
+/* Build an object from the text. */
+static const char *parse_object(cJSON *item, const char *value) {
+    cJSON *child;
+    if (*value != '{') {
+        ep = value;
+        return 0;
+    } /* not an object! */
+
+    item->type = cJSON_Object;
+    value = skip(value + 1);
+    if (*value == '}') return value + 1; /* empty array. */
+
+    item->child = child = cJSON_New_Item();
+    if (!item->child) return 0;
+    value = skip(parse_string(child, skip(value)));
+    if (!value) return 0;
+    child->string = child->valuestring;
+    child->valuestring = 0;
+    if (*value != ':') {
+        ep = value;
+        return 0;
+    }                                                  /* fail! */
+    value = skip(parse_value(child, skip(value + 1))); /* skip any spacing, get the value. */
+    if (!value) return 0;
+
+    while (*value == ',') {
+        cJSON *new_item;
+        if (!(new_item = cJSON_New_Item())) return 0; /* memory fail */
+        child->next = new_item;
+        new_item->prev = child;
+        child = new_item;
+        value = skip(parse_string(child, skip(value + 1)));
+        if (!value) return 0;
+        child->string = child->valuestring;
+        child->valuestring = 0;
+        if (*value != ':') {
+            ep = value;
+            return 0;
+        }                                                  /* fail! */
+        value = skip(parse_value(child, skip(value + 1))); /* skip any spacing, get the value. */
+        if (!value) return 0;
+    }
+
+    if (*value == '}') return value + 1; /* end of array */
+    ep = value;
+    return 0; /* malformed. */
+}
+
+/* Render an object to text. */
+static char *print_object(cJSON *item, int depth, int fmt, printbuffer *p) {
+    char **entries = 0, **names = 0;
+    char *out = 0, *ptr, *ret, *str;
+    int j;
+    cJSON *child = item->child;
+    int numentries = 0, fail = 0, k;
+    size_t tmplen = 0, i = 0, len = 7;
+    /* Count the number of entries. */
+    while (child) numentries++, child = child->next;
+    /* Explicitly handle empty object case */
+    if (!numentries) {
+        if (p)
+            out = ensure(p, fmt ? depth + 4 : 3);
+        else
+            out = (char *)cJSON_malloc(fmt ? depth + 4 : 3);
+        if (!out) return 0;
+        ptr = out;
+        *ptr++ = '{';
+        if (fmt) {
+            *ptr++ = '\n';
+            for (j = 0; j < depth - 1; j++) *ptr++ = '\t';
+        }
+        *ptr++ = '}';
+        *ptr++ = 0;
+        return out;
+    }
+    if (p) {
+        /* Compose the output: */
+        i = p->offset;
+        len = fmt ? 2 : 1;
+        ptr = ensure(p, len + 1);
+        if (!ptr) return 0;
+        *ptr++ = '{';
+        if (fmt) *ptr++ = '\n';
+        *ptr = 0;
+        p->offset += len;
+        child = item->child;
+        depth++;
+        while (child) {
+            if (fmt) {
+                ptr = ensure(p, depth);
+                if (!ptr) return 0;
+                for (j = 0; j < depth; j++) *ptr++ = '\t';
+                p->offset += depth;
+            }
+            print_string_ptr(child->string, p);
+            p->offset = update(p);
+
+            len = fmt ? 2 : 1;
+            ptr = ensure(p, len);
+            if (!ptr) return 0;
+            *ptr++ = ':';
+            if (fmt) *ptr++ = '\t';
+            p->offset += len;
+
+            print_value(child, depth, fmt, p);
+            p->offset = update(p);
+
+            len = (fmt ? 1 : 0) + (child->next ? 1 : 0);
+            ptr = ensure(p, len + 1);
+            if (!ptr) return 0;
+            if (child->next) *ptr++ = ',';
+            if (fmt) *ptr++ = '\n';
+            *ptr = 0;
+            p->offset += len;
+            child = child->next;
+        }
+        ptr = ensure(p, fmt ? (depth + 1) : 2);
+        if (!ptr) return 0;
+        if (fmt)
+            for (j = 0; j < depth - 1; j++) *ptr++ = '\t';
+        *ptr++ = '}';
+        *ptr = 0;
+        out = (p->buffer) + i;
+    } else {
+        /* Allocate space for the names and the objects */
+        entries = (char **)cJSON_malloc(numentries * sizeof(char *));
+        if (!entries) return 0;
+        names = (char **)cJSON_malloc(numentries * sizeof(char *));
+        if (!names) {
+            cJSON_free(entries);
+            return 0;
+        }
+        memset(entries, 0, sizeof(char *) * numentries);
+        memset(names, 0, sizeof(char *) * numentries);
+
+        /* Collect all the results into our arrays: */
+        child = item->child;
+        depth++;
+        if (fmt) len += depth;
+        while (child) {
+            names[i] = str = print_string_ptr(child->string, 0);
+            entries[i++] = ret = print_value(child, depth, fmt, 0);
+            if (str && ret)
+                len += strlen(ret) + strlen(str) + 2 + (fmt ? 2 + depth : 0);
+            else
+                fail = 1;
+            child = child->next;
+        }
+
+        /* Try to allocate the output string */
+        if (!fail) out = (char *)cJSON_malloc(len);
+        if (!out) fail = 1;
+
+        /* Handle failure */
+        if (fail) {
+            for (j = 0; j < numentries; j++) {
+                if (names[i]) cJSON_free(names[j]);
+                if (entries[j]) cJSON_free(entries[j]);
+            }
+            cJSON_free(names);
+            cJSON_free(entries);
+            return 0;
+        }
+
+        /* Compose the output: */
+        *out = '{';
+        ptr = out + 1;
+        if (fmt) *ptr++ = '\n';
+        *ptr = 0;
+        for (j = 0; j < numentries; j++) {
+            if (fmt)
+                for (k = 0; k < depth; k++) *ptr++ = '\t';
+            tmplen = strlen(names[j]);
+            memcpy(ptr, names[j], tmplen);
+            ptr += tmplen;
+            *ptr++ = ':';
+            if (fmt) *ptr++ = '\t';
+            strcpy(ptr, entries[j]);
+            ptr += strlen(entries[j]);
+            if (j != numentries - 1) *ptr++ = ',';
+            if (fmt) *ptr++ = '\n';
+            *ptr = 0;
+            cJSON_free(names[j]);
+            cJSON_free(entries[j]);
+        }
+
+        cJSON_free(names);
+        cJSON_free(entries);
+        if (fmt)
+            for (j = 0; j < depth - 1; j++) *ptr++ = '\t';
+        *ptr++ = '}';
+        *ptr++ = 0;
+    }
+    return out;
+}
+
+/* Get Array size/item / object item. */
+int cJSON_GetArraySize(cJSON *array) {
+    cJSON *c = array->child;
+    int i = 0;
+    while (c) i++, c = c->next;
+    return i;
+}
+cJSON *cJSON_GetArrayItem(cJSON *array, int item) {
+    cJSON *c = array->child;
+    while (c && item > 0) item--, c = c->next;
+    return c;
+}
+cJSON *cJSON_GetObjectItem(cJSON *object, const char *string) {
+    cJSON *c = object->child;
+    while (c && strcmp(c->string, string)) c = c->next;
+    return c;
+}
+
+/* Utility for array list handling. */
+static void suffix_object(cJSON *prev, cJSON *item) {
+    prev->next = item;
+    item->prev = prev;
+}
+/* Utility for handling references. */
+static cJSON *create_reference(cJSON *item) {
+    cJSON *ref = cJSON_New_Item();
+    if (!ref) return 0;
+    memcpy(ref, item, sizeof(cJSON));
+    ref->string = 0;
+    ref->type |= cJSON_IsReference;
+    ref->next = ref->prev = 0;
+    return ref;
+}
+
+/* Add item to array/object. */
+void cJSON_AddItemToArray(cJSON *array, cJSON *item) {
+    cJSON *c = array->child;
+    if (!item) return;
+    if (!c) {
+        array->child = item;
+    } else {
+        while (c && c->next) c = c->next;
+        suffix_object(c, item);
+    }
+}
+void cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item) {
+    if (!item) return;
+    if (item->string) cJSON_free(item->string);
+    item->string = cJSON_strdup(string);
+    cJSON_AddItemToArray(object, item);
+}
+void cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item) {
+    if (!item) return;
+    if (!(item->type & cJSON_StringIsConst) && item->string) cJSON_free(item->string);
+    item->string = (char *)string;
+    item->type |= cJSON_StringIsConst;
+    cJSON_AddItemToArray(object, item);
+}
+void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item) { cJSON_AddItemToArray(array, create_reference(item)); }
+void cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item) {
+    cJSON_AddItemToObject(object, string, create_reference(item));
+}
+
+cJSON *cJSON_DetachItemFromArray(cJSON *array, int which) {
+    cJSON *c = array->child;
+    while (c && which > 0) c = c->next, which--;
+    if (!c) return 0;
+    if (c->prev) c->prev->next = c->next;
+    if (c->next) c->next->prev = c->prev;
+    if (c == array->child) array->child = c->next;
+    c->prev = c->next = 0;
+    return c;
+}
+void cJSON_DeleteItemFromArray(cJSON *array, int which) { cJSON_Delete(cJSON_DetachItemFromArray(array, which)); }
+cJSON *cJSON_DetachItemFromObject(cJSON *object, const char *string) {
+    int i = 0;
+    cJSON *c = object->child;
+    while (c && strcmp(c->string, string)) i++, c = c->next;
+    if (c) return cJSON_DetachItemFromArray(object, i);
+    return 0;
+}
+void cJSON_DeleteItemFromObject(cJSON *object, const char *string) { cJSON_Delete(cJSON_DetachItemFromObject(object, string)); }
+
+/* Replace array/object items with new ones. */
+void cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem) {
+    cJSON *c = array->child;
+    while (c && which > 0) c = c->next, which--;
+    if (!c) {
+        cJSON_AddItemToArray(array, newitem);
+        return;
+    }
+    newitem->next = c;
+    newitem->prev = c->prev;
+    c->prev = newitem;
+    if (c == array->child)
+        array->child = newitem;
+    else
+        newitem->prev->next = newitem;
+}
+void cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem) {
+    cJSON *c = array->child;
+    while (c && which > 0) c = c->next, which--;
+    if (!c) return;
+    newitem->next = c->next;
+    newitem->prev = c->prev;
+    if (newitem->next) newitem->next->prev = newitem;
+    if (c == array->child)
+        array->child = newitem;
+    else
+        newitem->prev->next = newitem;
+    c->next = c->prev = 0;
+    cJSON_Delete(c);
+}
+void cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem) {
+    int i = 0;
+    cJSON *c = object->child;
+    while (c && strcmp(c->string, string)) i++, c = c->next;
+    if (c) {
+        newitem->string = cJSON_strdup(string);
+        cJSON_ReplaceItemInArray(object, i, newitem);
+    }
+}
+
+/* Create basic types: */
+cJSON *cJSON_CreateNull(void) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = cJSON_NULL;
+    return item;
+}
+cJSON *cJSON_CreateTrue(void) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = cJSON_True;
+    return item;
+}
+cJSON *cJSON_CreateFalse(void) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = cJSON_False;
+    return item;
+}
+cJSON *cJSON_CreateBool(int b) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = b ? cJSON_True : cJSON_False;
+    return item;
+}
+cJSON *cJSON_CreateNumber(double num) {
+    cJSON *item = cJSON_New_Item();
+    if (item) {
+        item->type = cJSON_Number;
+        item->valuedouble = num;
+        item->valueint = (int)num;
+    }
+    return item;
+}
+cJSON *cJSON_CreateString(const char *string) {
+    cJSON *item = cJSON_New_Item();
+    if (item) {
+        item->type = cJSON_String;
+        item->valuestring = cJSON_strdup(string);
+    }
+    return item;
+}
+cJSON *cJSON_CreateArray(void) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = cJSON_Array;
+    return item;
+}
+cJSON *cJSON_CreateObject(void) {
+    cJSON *item = cJSON_New_Item();
+    if (item) item->type = cJSON_Object;
+    return item;
+}
+
+/* Create Arrays: */
+cJSON *cJSON_CreateIntArray(const int *numbers, int count) {
+    int i;
+    cJSON *n = 0, *p = 0, *a = cJSON_CreateArray();
+    for (i = 0; a && i < count; i++) {
+        n = cJSON_CreateNumber(numbers[i]);
+        if (!i)
+            a->child = n;
+        else
+            suffix_object(p, n);
+        p = n;
+    }
+    return a;
+}
+cJSON *cJSON_CreateFloatArray(const float *numbers, int count) {
+    int i;
+    cJSON *n = 0, *p = 0, *a = cJSON_CreateArray();
+    for (i = 0; a && i < count; i++) {
+        n = cJSON_CreateNumber(numbers[i]);
+        if (!i)
+            a->child = n;
+        else
+            suffix_object(p, n);
+        p = n;
+    }
+    return a;
+}
+cJSON *cJSON_CreateDoubleArray(const double *numbers, int count) {
+    int i;
+    cJSON *n = 0, *p = 0, *a = cJSON_CreateArray();
+    for (i = 0; a && i < count; i++) {
+        n = cJSON_CreateNumber(numbers[i]);
+        if (!i)
+            a->child = n;
+        else
+            suffix_object(p, n);
+        p = n;
+    }
+    return a;
+}
+cJSON *cJSON_CreateStringArray(const char **strings, int count) {
+    int i;
+    cJSON *n = 0, *p = 0, *a = cJSON_CreateArray();
+    for (i = 0; a && i < count; i++) {
+        n = cJSON_CreateString(strings[i]);
+        if (!i)
+            a->child = n;
+        else
+            suffix_object(p, n);
+        p = n;
+    }
+    return a;
+}
+
+/* Duplication */
+cJSON *cJSON_Duplicate(cJSON *item, int recurse) {
+    cJSON *newitem, *cptr, *nptr = 0, *newchild;
+    /* Bail on bad ptr */
+    if (!item) return 0;
+    /* Create new item */
+    newitem = cJSON_New_Item();
+    if (!newitem) return 0;
+    /* Copy over all vars */
+    newitem->type = item->type & (~cJSON_IsReference), newitem->valueint = item->valueint, newitem->valuedouble = item->valuedouble;
+    if (item->valuestring) {
+        newitem->valuestring = cJSON_strdup(item->valuestring);
+        if (!newitem->valuestring) {
+            cJSON_Delete(newitem);
+            return 0;
+        }
+    }
+    if (item->string) {
+        newitem->string = cJSON_strdup(item->string);
+        if (!newitem->string) {
+            cJSON_Delete(newitem);
+            return 0;
+        }
+    }
+    /* If non-recursive, then we're done! */
+    if (!recurse) return newitem;
+    /* Walk the ->next chain for the child. */
+    cptr = item->child;
+    while (cptr) {
+        newchild = cJSON_Duplicate(cptr, 1); /* Duplicate (with recurse) each item in the ->next chain */
+        if (!newchild) {
+            cJSON_Delete(newitem);
+            return 0;
+        }
+        if (nptr) {
+            nptr->next = newchild, newchild->prev = nptr;
+            nptr = newchild;
+        } /* If newitem->child already set, then crosswire ->prev and ->next and
+             move on */
+        else {
+            newitem->child = newchild;
+            nptr = newchild;
+        } /* Set newitem->child and move to it */
+        cptr = cptr->next;
+    }
+    return newitem;
+}
+
+void cJSON_Minify(char *json) {
+    char *into = json;
+    while (*json) {
+        if (*json == ' ')
+            json++;
+        else if (*json == '\t')
+            json++; /* Whitespace characters. */
+        else if (*json == '\r')
+            json++;
+        else if (*json == '\n')
+            json++;
+        else if (*json == '/' && json[1] == '/')
+            while (*json && *json != '\n') json++; /* double-slash comments, to end of line. */
+        else if (*json == '/' && json[1] == '*') {
+            while (*json && !(*json == '*' && json[1] == '/')) json++;
+            json += 2;
+        } /* multiline comments. */
+        else if (*json == '\"') {
+            *into++ = *json++;
+            while (*json && *json != '\"') {
+                if (*json == '\\') *into++ = *json++;
+                *into++ = *json++;
+            }
+            *into++ = *json++;
+        } /* string literals, which are \" sensitive. */
+        else
+            *into++ = *json++; /* All other characters. */
+    }
+    *into = 0; /* and null-terminate. */
+}