initial checkin

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@2 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 1012 insertions, 0 deletions

diff --git a/decoder/JSON_parser.c b/decoder/JSON_parser.c
new file mode 100644
index 00000000..175b7cc9
--- /dev/null
+++ b/decoder/JSON_parser.c
@@ -0,0 +1,1012 @@
+/* JSON_parser.c */
+
+/* 2007-08-24 */
+
+/*
+Copyright (c) 2005 JSON.org
+
+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 shall be used for Good, not Evil.
+
+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.
+*/
+
+/*
+    Callbacks, comments, Unicode handling by Jean Gressmann (jean@0x42.de), 2007-2009.
+    
+    For the added features the license above applies also.
+    
+    Changelog:
+        2009-05-17 
+            Incorporated benrudiak@googlemail.com fix for UTF16 decoding.
+            
+        2009-05-14 
+            Fixed float parsing bug related to a locale being set that didn't
+            use '.' as decimal point character (charles@transmissionbt.com).
+            
+        2008-10-14 
+            Renamed states.IN to states.IT to avoid name clash which IN macro
+            defined in windef.h (alexey.pelykh@gmail.com)
+            
+        2008-07-19 
+            Removed some duplicate code & debugging variable (charles@transmissionbt.com)
+        
+        2008-05-28 
+            Made JSON_value structure ansi C compliant. This bug was report by 
+            trisk@acm.jhu.edu
+        
+        2008-05-20 
+            Fixed bug reported by charles@transmissionbt.com where the switching 
+            from static to dynamic parse buffer did not copy the static parse 
+            buffer's content.
+*/
+
+
+
+#include <assert.h>
+#include <ctype.h>
+#include <float.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <locale.h>
+
+#include "JSON_parser.h"
+
+#ifdef _MSC_VER
+#   if _MSC_VER >= 1400 /* Visual Studio 2005 and up */
+#      pragma warning(disable:4996) // unsecure sscanf
+#   endif
+#endif
+
+
+#define true  1
+#define false 0
+#define __   -1     /* the universal error code */
+
+/* values chosen so that the object size is approx equal to one page (4K) */
+#ifndef JSON_PARSER_STACK_SIZE
+#   define JSON_PARSER_STACK_SIZE 128
+#endif
+
+#ifndef JSON_PARSER_PARSE_BUFFER_SIZE
+#   define JSON_PARSER_PARSE_BUFFER_SIZE 3500
+#endif
+
+typedef unsigned short UTF16;
+
+struct JSON_parser_struct {
+    JSON_parser_callback callback;
+    void* ctx;
+    signed char state, before_comment_state, type, escaped, comment, allow_comments, handle_floats_manually;
+    UTF16 utf16_high_surrogate;
+    long depth;
+    long top;
+    signed char* stack;
+    long stack_capacity;
+    char decimal_point;
+    char* parse_buffer;
+    size_t parse_buffer_capacity;
+    size_t parse_buffer_count;
+    size_t comment_begin_offset;
+    signed char static_stack[JSON_PARSER_STACK_SIZE];
+    char static_parse_buffer[JSON_PARSER_PARSE_BUFFER_SIZE];
+};
+
+#define COUNTOF(x) (sizeof(x)/sizeof(x[0])) 
+
+/*
+    Characters are mapped into these character classes. This allows for
+    a significant reduction in the size of the state transition table.
+*/
+
+
+
+enum classes {
+    C_SPACE,  /* space */
+    C_WHITE,  /* other whitespace */
+    C_LCURB,  /* {  */
+    C_RCURB,  /* } */
+    C_LSQRB,  /* [ */
+    C_RSQRB,  /* ] */
+    C_COLON,  /* : */
+    C_COMMA,  /* , */
+    C_QUOTE,  /* " */
+    C_BACKS,  /* \ */
+    C_SLASH,  /* / */
+    C_PLUS,   /* + */
+    C_MINUS,  /* - */
+    C_POINT,  /* . */
+    C_ZERO ,  /* 0 */
+    C_DIGIT,  /* 123456789 */
+    C_LOW_A,  /* a */
+    C_LOW_B,  /* b */
+    C_LOW_C,  /* c */
+    C_LOW_D,  /* d */
+    C_LOW_E,  /* e */
+    C_LOW_F,  /* f */
+    C_LOW_L,  /* l */
+    C_LOW_N,  /* n */
+    C_LOW_R,  /* r */
+    C_LOW_S,  /* s */
+    C_LOW_T,  /* t */
+    C_LOW_U,  /* u */
+    C_ABCDF,  /* ABCDF */
+    C_E,      /* E */
+    C_ETC,    /* everything else */
+    C_STAR,   /* * */   
+    NR_CLASSES
+};
+
+static int ascii_class[128] = {
+/*
+    This array maps the 128 ASCII characters into character classes.
+    The remaining Unicode characters should be mapped to C_ETC.
+    Non-whitespace control characters are errors.
+*/
+    __,      __,      __,      __,      __,      __,      __,      __,
+    __,      C_WHITE, C_WHITE, __,      __,      C_WHITE, __,      __,
+    __,      __,      __,      __,      __,      __,      __,      __,
+    __,      __,      __,      __,      __,      __,      __,      __,
+
+    C_SPACE, C_ETC,   C_QUOTE, C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
+    C_ETC,   C_ETC,   C_STAR,   C_PLUS,  C_COMMA, C_MINUS, C_POINT, C_SLASH,
+    C_ZERO,  C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT,
+    C_DIGIT, C_DIGIT, C_COLON, C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
+
+    C_ETC,   C_ABCDF, C_ABCDF, C_ABCDF, C_ABCDF, C_E,     C_ABCDF, C_ETC,
+    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
+    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
+    C_ETC,   C_ETC,   C_ETC,   C_LSQRB, C_BACKS, C_RSQRB, C_ETC,   C_ETC,
+
+    C_ETC,   C_LOW_A, C_LOW_B, C_LOW_C, C_LOW_D, C_LOW_E, C_LOW_F, C_ETC,
+    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_LOW_L, C_ETC,   C_LOW_N, C_ETC,
+    C_ETC,   C_ETC,   C_LOW_R, C_LOW_S, C_LOW_T, C_LOW_U, C_ETC,   C_ETC,
+    C_ETC,   C_ETC,   C_ETC,   C_LCURB, C_ETC,   C_RCURB, C_ETC,   C_ETC
+};
+
+
+/*
+    The state codes.
+*/
+enum states {
+    GO,  /* start    */
+    OK,  /* ok       */
+    OB,  /* object   */
+    KE,  /* key      */
+    CO,  /* colon    */
+    VA,  /* value    */
+    AR,  /* array    */
+    ST,  /* string   */
+    ES,  /* escape   */
+    U1,  /* u1       */
+    U2,  /* u2       */
+    U3,  /* u3       */
+    U4,  /* u4       */
+    MI,  /* minus    */
+    ZE,  /* zero     */
+    IT,  /* integer  */
+    FR,  /* fraction */
+    E1,  /* e        */
+    E2,  /* ex       */
+    E3,  /* exp      */
+    T1,  /* tr       */
+    T2,  /* tru      */
+    T3,  /* true     */
+    F1,  /* fa       */
+    F2,  /* fal      */
+    F3,  /* fals     */
+    F4,  /* false    */
+    N1,  /* nu       */
+    N2,  /* nul      */
+    N3,  /* null     */
+    C1,  /* /        */
+    C2,  /* / *     */
+    C3,  /* *        */
+    FX,  /* *.* *eE* */
+    D1,  /* second UTF-16 character decoding started by \ */
+    D2,  /* second UTF-16 character proceeded by u */
+    NR_STATES
+};
+
+enum actions
+{
+    CB = -10, /* comment begin */
+    CE = -11, /* comment end */
+    FA = -12, /* false */
+    TR = -13, /* false */
+    NU = -14, /* null */
+    DE = -15, /* double detected by exponent e E */
+    DF = -16, /* double detected by fraction . */
+    SB = -17, /* string begin */
+    MX = -18, /* integer detected by minus */
+    ZX = -19, /* integer detected by zero */
+    IX = -20, /* integer detected by 1-9 */
+    EX = -21, /* next char is escaped */
+    UC = -22  /* Unicode character read */
+};
+
+
+static int state_transition_table[NR_STATES][NR_CLASSES] = {
+/*
+    The state transition table takes the current state and the current symbol,
+    and returns either a new state or an action. An action is represented as a
+    negative number. A JSON text is accepted if at the end of the text the
+    state is OK and if the mode is MODE_DONE.
+
+                 white                                      1-9                                   ABCDF  etc
+             space |  {  }  [  ]  :  ,  "  \  /  +  -  .  0  |  a  b  c  d  e  f  l  n  r  s  t  u  |  E  |  * */
+/*start  GO*/ {GO,GO,-6,__,-5,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*ok     OK*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*object OB*/ {OB,OB,__,-9,__,__,__,__,SB,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*key    KE*/ {KE,KE,__,__,__,__,__,__,SB,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*colon  CO*/ {CO,CO,__,__,__,__,-2,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*value  VA*/ {VA,VA,-6,__,-5,__,__,__,SB,__,CB,__,MX,__,ZX,IX,__,__,__,__,__,FA,__,NU,__,__,TR,__,__,__,__,__},
+/*array  AR*/ {AR,AR,-6,__,-5,-7,__,__,SB,__,CB,__,MX,__,ZX,IX,__,__,__,__,__,FA,__,NU,__,__,TR,__,__,__,__,__},
+/*string ST*/ {ST,__,ST,ST,ST,ST,ST,ST,-4,EX,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST},
+/*escape ES*/ {__,__,__,__,__,__,__,__,ST,ST,ST,__,__,__,__,__,__,ST,__,__,__,ST,__,ST,ST,__,ST,U1,__,__,__,__},
+/*u1     U1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U2,U2,U2,U2,U2,U2,U2,U2,__,__,__,__,__,__,U2,U2,__,__},
+/*u2     U2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U3,U3,U3,U3,U3,U3,U3,U3,__,__,__,__,__,__,U3,U3,__,__},
+/*u3     U3*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,U4,U4,U4,U4,U4,U4,U4,U4,__,__,__,__,__,__,U4,U4,__,__},
+/*u4     U4*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,UC,UC,UC,UC,UC,UC,UC,UC,__,__,__,__,__,__,UC,UC,__,__},
+/*minus  MI*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,ZE,IT,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*zero   ZE*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,DF,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*int    IT*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,DF,IT,IT,__,__,__,__,DE,__,__,__,__,__,__,__,__,DE,__,__},
+/*frac   FR*/ {OK,OK,__,-8,__,-7,__,-3,__,__,CB,__,__,__,FR,FR,__,__,__,__,E1,__,__,__,__,__,__,__,__,E1,__,__},
+/*e      E1*/ {__,__,__,__,__,__,__,__,__,__,__,E2,E2,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*ex     E2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*exp    E3*/ {OK,OK,__,-8,__,-7,__,-3,__,__,__,__,__,__,E3,E3,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*tr     T1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,T2,__,__,__,__,__,__,__},
+/*tru    T2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,T3,__,__,__,__},
+/*true   T3*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__,__,__},
+/*fa     F1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F2,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*fal    F2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F3,__,__,__,__,__,__,__,__,__},
+/*fals   F3*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,F4,__,__,__,__,__,__},
+/*false  F4*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__,__,__},
+/*nu     N1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,N2,__,__,__,__},
+/*nul    N2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,N3,__,__,__,__,__,__,__,__,__},
+/*null   N3*/ {__,__,__,__,__,__,__,__,__,__,CB,__,__,__,__,__,__,__,__,__,__,__,OK,__,__,__,__,__,__,__,__,__},
+/*/      C1*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,C2},
+/*/*     C2*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3},
+/**      C3*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,CE,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3},
+/*_.     FX*/ {OK,OK,__,-8,__,-7,__,-3,__,__,__,__,__,__,FR,FR,__,__,__,__,E1,__,__,__,__,__,__,__,__,E1,__,__},
+/*\      D1*/ {__,__,__,__,__,__,__,__,__,D2,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__},
+/*\      D2*/ {__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,U1,__,__,__,__},
+};
+
+
+/*
+    These modes can be pushed on the stack.
+*/
+enum modes {
+    MODE_ARRAY = 1, 
+    MODE_DONE = 2,  
+    MODE_KEY = 3,   
+    MODE_OBJECT = 4
+};
+
+static int
+push(JSON_parser jc, int mode)
+{
+/*
+    Push a mode onto the stack. Return false if there is overflow.
+*/
+    jc->top += 1;
+    if (jc->depth < 0) {
+        if (jc->top >= jc->stack_capacity) {
+            size_t bytes_to_allocate;
+            jc->stack_capacity *= 2;
+            bytes_to_allocate = jc->stack_capacity * sizeof(jc->static_stack[0]);
+            if (jc->stack == &jc->static_stack[0]) {
+                jc->stack = (signed char*)malloc(bytes_to_allocate);
+                memcpy(jc->stack, jc->static_stack, sizeof(jc->static_stack));
+            } else {
+                jc->stack = (signed char*)realloc(jc->stack, bytes_to_allocate);
+            }
+        }
+    } else {
+        if (jc->top >= jc->depth) {
+            return false;
+        }
+    }
+    
+    jc->stack[jc->top] = mode;
+    return true;
+}
+
+
+static int
+pop(JSON_parser jc, int mode)
+{
+/*
+    Pop the stack, assuring that the current mode matches the expectation.
+    Return false if there is underflow or if the modes mismatch.
+*/
+    if (jc->top < 0 || jc->stack[jc->top] != mode) {
+        return false;
+    }
+    jc->top -= 1;
+    return true;
+}
+
+
+#define parse_buffer_clear(jc) \
+    do {\
+        jc->parse_buffer_count = 0;\
+        jc->parse_buffer[0] = 0;\
+    } while (0)
+    
+#define parse_buffer_pop_back_char(jc)\
+    do {\
+        assert(jc->parse_buffer_count >= 1);\
+        --jc->parse_buffer_count;\
+        jc->parse_buffer[jc->parse_buffer_count] = 0;\
+    } while (0)    
+    
+void delete_JSON_parser(JSON_parser jc)
+{
+    if (jc) {
+        if (jc->stack != &jc->static_stack[0]) {
+            free((void*)jc->stack);
+        }
+        if (jc->parse_buffer != &jc->static_parse_buffer[0]) {
+            free((void*)jc->parse_buffer);
+        }
+        free((void*)jc);
+     }   
+}
+
+
+JSON_parser
+new_JSON_parser(JSON_config* config)
+{
+/*
+    new_JSON_parser starts the checking process by constructing a JSON_parser
+    object. It takes a depth parameter that restricts the level of maximum
+    nesting.
+
+    To continue the process, call JSON_parser_char for each character in the
+    JSON text, and then call JSON_parser_done to obtain the final result.
+    These functions are fully reentrant.
+*/
+
+    int depth = 0;
+    JSON_config default_config;
+    
+    JSON_parser jc = (JSON_parser)malloc(sizeof(struct JSON_parser_struct));
+    
+    memset(jc, 0, sizeof(*jc));
+    
+    
+    /* initialize configuration */
+    init_JSON_config(&default_config);
+    
+    /* set to default configuration if none was provided */
+    if (config == NULL) {
+        config = &default_config;
+    }
+
+    depth = config->depth;
+    
+    /* We need to be able to push at least one object */
+    if (depth == 0) {
+        depth = 1;
+    }
+    
+    jc->state = GO;
+    jc->top = -1;
+    
+    /* Do we want non-bound stack? */
+    if (depth > 0) {
+        jc->stack_capacity = depth;
+        jc->depth = depth;
+        if (depth <= (int)COUNTOF(jc->static_stack)) {
+            jc->stack = &jc->static_stack[0];
+        } else {
+            jc->stack = (signed char*)malloc(jc->stack_capacity * sizeof(jc->static_stack[0]));
+        }
+    } else {
+        jc->stack_capacity = COUNTOF(jc->static_stack);
+        jc->depth = -1;
+        jc->stack = &jc->static_stack[0];
+    }
+    
+    /* set parser to start */
+    push(jc, MODE_DONE);
+    
+    /* set up the parse buffer */
+    jc->parse_buffer = &jc->static_parse_buffer[0];
+    jc->parse_buffer_capacity = COUNTOF(jc->static_parse_buffer);
+    parse_buffer_clear(jc);
+    
+    /* set up callback, comment & float handling */
+    jc->callback = config->callback;
+    jc->ctx = config->callback_ctx;
+    jc->allow_comments = config->allow_comments != 0;
+    jc->handle_floats_manually = config->handle_floats_manually != 0;
+    
+    /* set up decimal point */
+    jc->decimal_point = *localeconv()->decimal_point;
+    
+    return jc;
+}
+
+static void grow_parse_buffer(JSON_parser jc)
+{
+    size_t bytes_to_allocate;
+    jc->parse_buffer_capacity *= 2;
+    bytes_to_allocate = jc->parse_buffer_capacity * sizeof(jc->parse_buffer[0]);
+    if (jc->parse_buffer == &jc->static_parse_buffer[0]) {
+        jc->parse_buffer = (char*)malloc(bytes_to_allocate);
+        memcpy(jc->parse_buffer, jc->static_parse_buffer, jc->parse_buffer_count);
+    } else {
+        jc->parse_buffer = (char*)realloc(jc->parse_buffer, bytes_to_allocate);
+    }
+}
+
+#define parse_buffer_push_back_char(jc, c)\
+    do {\
+        if (jc->parse_buffer_count + 1 >= jc->parse_buffer_capacity) grow_parse_buffer(jc);\
+        jc->parse_buffer[jc->parse_buffer_count++] = c;\
+        jc->parse_buffer[jc->parse_buffer_count]   = 0;\
+    } while (0)
+
+#define assert_is_non_container_type(jc) \
+    assert( \
+        jc->type == JSON_T_NULL || \
+        jc->type == JSON_T_FALSE || \
+        jc->type == JSON_T_TRUE || \
+        jc->type == JSON_T_FLOAT || \
+        jc->type == JSON_T_INTEGER || \
+        jc->type == JSON_T_STRING)
+    
+
+static int parse_parse_buffer(JSON_parser jc)
+{
+    if (jc->callback) {
+        JSON_value value, *arg = NULL;
+        
+        if (jc->type != JSON_T_NONE) {
+            assert_is_non_container_type(jc);
+        
+            switch(jc->type) {
+                case JSON_T_FLOAT:
+                    arg = &value;
+                    if (jc->handle_floats_manually) {
+                        value.vu.str.value = jc->parse_buffer;
+                        value.vu.str.length = jc->parse_buffer_count;
+                    } else { 
+                        /*sscanf(jc->parse_buffer, "%Lf", &value.vu.float_value);*/
+                        
+                        /* not checking with end pointer b/c there may be trailing ws */
+                        value.vu.float_value = strtold(jc->parse_buffer, NULL);
+                    }
+                    break;
+                case JSON_T_INTEGER:
+                    arg = &value;
+                    sscanf(jc->parse_buffer, JSON_PARSER_INTEGER_SSCANF_TOKEN, &value.vu.integer_value);
+                    break;
+                case JSON_T_STRING:
+                    arg = &value;
+                    value.vu.str.value = jc->parse_buffer;
+                    value.vu.str.length = jc->parse_buffer_count;
+                    break;
+            }
+            
+            if (!(*jc->callback)(jc->ctx, jc->type, arg)) {
+                return false;
+            }
+        }
+    }
+    
+    parse_buffer_clear(jc);
+    
+    return true;
+}
+
+#define IS_HIGH_SURROGATE(uc) (((uc) & 0xFC00) == 0xD800)
+#define IS_LOW_SURROGATE(uc)  (((uc) & 0xFC00) == 0xDC00)
+#define DECODE_SURROGATE_PAIR(hi,lo) ((((hi) & 0x3FF) << 10) + ((lo) & 0x3FF) + 0x10000)
+static unsigned char utf8_lead_bits[4] = { 0x00, 0xC0, 0xE0, 0xF0 };
+
+static int decode_unicode_char(JSON_parser jc)
+{
+    int i;
+    unsigned uc = 0;
+    char* p;
+    int trail_bytes;
+    
+    assert(jc->parse_buffer_count >= 6);
+    
+    p = &jc->parse_buffer[jc->parse_buffer_count - 4];
+    
+    for (i = 12; i >= 0; i -= 4, ++p) {
+        unsigned x = *p;
+        
+        if (x >= 'a') {
+            x -= ('a' - 10);
+        } else if (x >= 'A') {
+            x -= ('A' - 10);
+        } else {
+            x &= ~0x30u;
+        }
+        
+        assert(x < 16);
+        
+        uc |= x << i;
+    }
+    
+    /* clear UTF-16 char from buffer */
+    jc->parse_buffer_count -= 6;
+    jc->parse_buffer[jc->parse_buffer_count] = 0;
+    
+    /* attempt decoding ... */
+    if (jc->utf16_high_surrogate) {
+        if (IS_LOW_SURROGATE(uc)) {
+            uc = DECODE_SURROGATE_PAIR(jc->utf16_high_surrogate, uc);
+            trail_bytes = 3;
+            jc->utf16_high_surrogate = 0;
+        } else {
+            /* high surrogate without a following low surrogate */
+            return false;
+        }
+    } else {
+        if (uc < 0x80) {
+            trail_bytes = 0;
+        } else if (uc < 0x800) {
+            trail_bytes = 1;
+        } else if (IS_HIGH_SURROGATE(uc)) {
+            /* save the high surrogate and wait for the low surrogate */
+            jc->utf16_high_surrogate = uc;
+            return true;
+        } else if (IS_LOW_SURROGATE(uc)) {
+            /* low surrogate without a preceding high surrogate */
+            return false;
+        } else {
+            trail_bytes = 2;
+        }
+    }
+    
+    jc->parse_buffer[jc->parse_buffer_count++] = (char) ((uc >> (trail_bytes * 6)) | utf8_lead_bits[trail_bytes]);
+    
+    for (i = trail_bytes * 6 - 6; i >= 0; i -= 6) {
+        jc->parse_buffer[jc->parse_buffer_count++] = (char) (((uc >> i) & 0x3F) | 0x80);
+    }
+
+    jc->parse_buffer[jc->parse_buffer_count] = 0;
+    
+    return true;
+}
+
+static int add_escaped_char_to_parse_buffer(JSON_parser jc, int next_char)
+{
+    jc->escaped = 0;
+    /* remove the backslash */
+    parse_buffer_pop_back_char(jc);
+    switch(next_char) {
+        case 'b':
+            parse_buffer_push_back_char(jc, '\b');
+            break;
+        case 'f':
+            parse_buffer_push_back_char(jc, '\f');
+            break;
+        case 'n':
+            parse_buffer_push_back_char(jc, '\n');
+            break;
+        case 'r':
+            parse_buffer_push_back_char(jc, '\r');
+            break;
+        case 't':
+            parse_buffer_push_back_char(jc, '\t');
+            break;
+        case '"':
+            parse_buffer_push_back_char(jc, '"');
+            break;
+        case '\\':
+            parse_buffer_push_back_char(jc, '\\');
+            break;
+        case '/':
+            parse_buffer_push_back_char(jc, '/');
+            break;
+        case 'u':
+            parse_buffer_push_back_char(jc, '\\');
+            parse_buffer_push_back_char(jc, 'u');
+            break;
+        default:
+            return false;
+    }
+
+    return true;
+}
+
+#define add_char_to_parse_buffer(jc, next_char, next_class) \
+    do { \
+        if (jc->escaped) { \
+            if (!add_escaped_char_to_parse_buffer(jc, next_char)) \
+                return false; \
+        } else if (!jc->comment) { \
+            if ((jc->type != JSON_T_NONE) | !((next_class == C_SPACE) | (next_class == C_WHITE)) /* non-white-space */) { \
+                parse_buffer_push_back_char(jc, (char)next_char); \
+            } \
+        } \
+    } while (0)
+    
+
+#define assert_type_isnt_string_null_or_bool(jc) \
+    assert(jc->type != JSON_T_FALSE); \
+    assert(jc->type != JSON_T_TRUE); \
+    assert(jc->type != JSON_T_NULL); \
+    assert(jc->type != JSON_T_STRING)
+
+
+int
+JSON_parser_char(JSON_parser jc, int next_char)
+{
+/*
+    After calling new_JSON_parser, call this function for each character (or
+    partial character) in your JSON text. It can accept UTF-8, UTF-16, or
+    UTF-32. It returns true if things are looking ok so far. If it rejects the
+    text, it returns false.
+*/
+    int next_class, next_state;
+    
+/*
+    Determine the character's class.
+*/
+    if (next_char < 0) {
+        return false;
+    }
+    if (next_char >= 128) {
+        next_class = C_ETC;
+    } else {
+        next_class = ascii_class[next_char];
+        if (next_class <= __) {
+            return false;
+        }
+    }
+    
+    add_char_to_parse_buffer(jc, next_char, next_class);
+    
+/*
+    Get the next state from the state transition table.
+*/
+    next_state = state_transition_table[jc->state][next_class];
+    if (next_state >= 0) {
+/*
+    Change the state.
+*/
+        jc->state = next_state;
+    } else {
+/*
+    Or perform one of the actions.
+*/
+        switch (next_state) {
+/* Unicode character */        
+        case UC:
+            if(!decode_unicode_char(jc)) {
+                return false;
+            }
+            /* check if we need to read a second UTF-16 char */
+            if (jc->utf16_high_surrogate) {
+                jc->state = D1;
+            } else {
+                jc->state = ST;
+            }
+            break;
+/* escaped char */
+        case EX:
+            jc->escaped = 1;
+            jc->state = ES;
+            break;
+/* integer detected by minus */
+        case MX:
+            jc->type = JSON_T_INTEGER;
+            jc->state = MI;
+            break;  
+/* integer detected by zero */            
+        case ZX:
+            jc->type = JSON_T_INTEGER;
+            jc->state = ZE;
+            break;  
+/* integer detected by 1-9 */            
+        case IX:
+            jc->type = JSON_T_INTEGER;
+            jc->state = IT;
+            break;  
+            
+/* floating point number detected by exponent*/
+        case DE:
+            assert_type_isnt_string_null_or_bool(jc);
+            jc->type = JSON_T_FLOAT;
+            jc->state = E1;
+            break;   
+        
+/* floating point number detected by fraction */
+        case DF:
+            assert_type_isnt_string_null_or_bool(jc);
+            if (!jc->handle_floats_manually) {
+/*
+    Some versions of strtod (which underlies sscanf) don't support converting 
+    C-locale formated floating point values.
+*/           
+                assert(jc->parse_buffer[jc->parse_buffer_count-1] == '.');
+                jc->parse_buffer[jc->parse_buffer_count-1] = jc->decimal_point;
+            }            
+            jc->type = JSON_T_FLOAT;
+            jc->state = FX;
+            break;   
+/* string begin " */
+        case SB:
+            parse_buffer_clear(jc);
+            assert(jc->type == JSON_T_NONE);
+            jc->type = JSON_T_STRING;
+            jc->state = ST;
+            break;        
+        
+/* n */
+        case NU:
+            assert(jc->type == JSON_T_NONE);
+            jc->type = JSON_T_NULL;
+            jc->state = N1;
+            break;        
+/* f */
+        case FA:
+            assert(jc->type == JSON_T_NONE);
+            jc->type = JSON_T_FALSE;
+            jc->state = F1;
+            break;        
+/* t */
+        case TR:
+            assert(jc->type == JSON_T_NONE);
+            jc->type = JSON_T_TRUE;
+            jc->state = T1;
+            break;        
+        
+/* closing comment */
+        case CE:
+            jc->comment = 0;
+            assert(jc->parse_buffer_count == 0);
+            assert(jc->type == JSON_T_NONE);
+            jc->state = jc->before_comment_state;
+            break;        
+        
+/* opening comment  */
+        case CB:
+            if (!jc->allow_comments) {
+                return false;
+            }
+            parse_buffer_pop_back_char(jc);
+            if (!parse_parse_buffer(jc)) {
+                return false;
+            }
+            assert(jc->parse_buffer_count == 0);
+            assert(jc->type != JSON_T_STRING);
+            switch (jc->stack[jc->top]) {
+            case MODE_ARRAY:
+            case MODE_OBJECT:   
+                switch(jc->state) {
+                case VA:
+                case AR:
+                    jc->before_comment_state = jc->state;
+                    break;
+                default:
+                    jc->before_comment_state = OK;
+                    break;
+                }
+                break;
+            default:
+                jc->before_comment_state = jc->state;
+                break;
+            }
+            jc->type = JSON_T_NONE;
+            jc->state = C1;
+            jc->comment = 1;
+            break;
+/* empty } */
+        case -9:        
+            parse_buffer_clear(jc);
+            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) {
+                return false;
+            }
+            if (!pop(jc, MODE_KEY)) {
+                return false;
+            }
+            jc->state = OK;
+            break;
+
+/* } */ case -8:
+            parse_buffer_pop_back_char(jc);
+            if (!parse_parse_buffer(jc)) {
+                return false;
+            }
+            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) {
+                return false;
+            }
+            if (!pop(jc, MODE_OBJECT)) {
+                return false;
+            }
+            jc->type = JSON_T_NONE;
+            jc->state = OK;
+            break;
+
+/* ] */ case -7:
+            parse_buffer_pop_back_char(jc);
+            if (!parse_parse_buffer(jc)) {
+                return false;
+            }
+            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_END, NULL)) {
+                return false;
+            }
+            if (!pop(jc, MODE_ARRAY)) {
+                return false;
+            }
+            
+            jc->type = JSON_T_NONE;
+            jc->state = OK;
+            break;
+
+/* { */ case -6:
+            parse_buffer_pop_back_char(jc);
+            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_BEGIN, NULL)) {
+                return false;
+            }
+            if (!push(jc, MODE_KEY)) {
+                return false;
+            }
+            assert(jc->type == JSON_T_NONE);
+            jc->state = OB;
+            break;
+
+/* [ */ case -5:
+            parse_buffer_pop_back_char(jc);
+            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_BEGIN, NULL)) {
+                return false;
+            }
+            if (!push(jc, MODE_ARRAY)) {
+                return false;
+            }
+            assert(jc->type == JSON_T_NONE);
+            jc->state = AR;
+            break;
+
+/* string end " */ case -4:
+            parse_buffer_pop_back_char(jc);
+            switch (jc->stack[jc->top]) {
+            case MODE_KEY:
+                assert(jc->type == JSON_T_STRING);
+                jc->type = JSON_T_NONE;
+                jc->state = CO;
+                
+                if (jc->callback) {
+                    JSON_value value;
+                    value.vu.str.value = jc->parse_buffer;
+                    value.vu.str.length = jc->parse_buffer_count;
+                    if (!(*jc->callback)(jc->ctx, JSON_T_KEY, &value)) {
+                        return false;
+                    }
+                }
+                parse_buffer_clear(jc);
+                break;
+            case MODE_ARRAY:
+            case MODE_OBJECT:
+                assert(jc->type == JSON_T_STRING);
+                if (!parse_parse_buffer(jc)) {
+                    return false;
+                }
+                jc->type = JSON_T_NONE;
+                jc->state = OK;
+                break;
+            default:
+                return false;
+            }
+            break;
+
+/* , */ case -3:
+            parse_buffer_pop_back_char(jc);
+            if (!parse_parse_buffer(jc)) {
+                return false;
+            }
+            switch (jc->stack[jc->top]) {
+            case MODE_OBJECT:
+/*
+    A comma causes a flip from object mode to key mode.
+*/
+                if (!pop(jc, MODE_OBJECT) || !push(jc, MODE_KEY)) {
+                    return false;
+                }
+                assert(jc->type != JSON_T_STRING);
+                jc->type = JSON_T_NONE;
+                jc->state = KE;
+                break;
+            case MODE_ARRAY:
+                assert(jc->type != JSON_T_STRING);
+                jc->type = JSON_T_NONE;
+                jc->state = VA;
+                break;
+            default:
+                return false;
+            }
+            break;
+
+/* : */ case -2:
+/*
+    A colon causes a flip from key mode to object mode.
+*/
+            parse_buffer_pop_back_char(jc);
+            if (!pop(jc, MODE_KEY) || !push(jc, MODE_OBJECT)) {
+                return false;
+            }
+            assert(jc->type == JSON_T_NONE);
+            jc->state = VA;
+            break;
+/*
+    Bad action.
+*/
+        default:
+            return false;
+        }
+    }
+    return true;
+}
+
+
+int
+JSON_parser_done(JSON_parser jc)
+{
+    const int result = jc->state == OK && pop(jc, MODE_DONE);
+
+    return result;
+}
+
+
+int JSON_parser_is_legal_white_space_string(const char* s)
+{
+    int c, char_class;
+    
+    if (s == NULL) {
+        return false;
+    }
+    
+    for (; *s; ++s) {   
+        c = *s;
+        
+        if (c < 0 || c >= 128) {
+            return false;
+        }
+        
+        char_class = ascii_class[c];
+        
+        if (char_class != C_SPACE && char_class != C_WHITE) {
+            return false;
+        }
+    }
+    
+    return true;
+}
+
+
+
+void init_JSON_config(JSON_config* config)
+{
+    if (config) {
+        memset(config, 0, sizeof(*config));
+        
+        config->depth = JSON_PARSER_STACK_SIZE - 1;
+    }
+}