diff options
Diffstat (limited to 'json-c/json_tokener.c')
| -rw-r--r-- | json-c/json_tokener.c | 887 |
1 files changed, 0 insertions, 887 deletions
diff --git a/json-c/json_tokener.c b/json-c/json_tokener.c deleted file mode 100644 index 60e81f2..0000000 --- a/json-c/json_tokener.c +++ /dev/null @@ -1,887 +0,0 @@ -/* - * $Id: json_tokener.c,v 1.20 2006/07/25 03:24:50 mclark Exp $ - * - * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. - * Michael Clark <michael@metaparadigm.com> - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the MIT license. See COPYING for details. - * - * - * Copyright (c) 2008-2009 Yahoo! Inc. All rights reserved. - * The copyrights to the contents of this file are licensed under the MIT License - * (http://www.opensource.org/licenses/mit-license.php) - */ - -#include "config.h" - -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -#include <stddef.h> -#include <ctype.h> -#include <string.h> -#include <limits.h> - -#include "debug.h" -#include "printbuf.h" -#include "arraylist.h" -#include "json_inttypes.h" -#include "json_object.h" -#include "json_tokener.h" -#include "json_util.h" - -#ifdef HAVE_LOCALE_H -#include <locale.h> -#endif /* HAVE_LOCALE_H */ - -#define jt_hexdigit(x) (((x) <= '9') ? (x) - '0' : ((x) & 7) + 9) - -#if !HAVE_STRDUP && defined(_MSC_VER) - /* MSC has the version as _strdup */ -# define strdup _strdup -#elif !HAVE_STRDUP -# error You do not have strdup on your system. -#endif /* HAVE_STRDUP */ - -#if !HAVE_STRNCASECMP && defined(_MSC_VER) - /* MSC has the version as _strnicmp */ -# define strncasecmp _strnicmp -#elif !HAVE_STRNCASECMP -# error You do not have strncasecmp on your system. -#endif /* HAVE_STRNCASECMP */ - -/* Use C99 NAN by default; if not available, nan("") should work too. */ -#ifndef NAN -#define NAN nan("") -#endif /* !NAN */ - -static const char json_null_str[] = "null"; -static const int json_null_str_len = sizeof(json_null_str) - 1; -static const char json_inf_str[] = "Infinity"; -static const int json_inf_str_len = sizeof(json_inf_str) - 1; -static const char json_nan_str[] = "NaN"; -static const int json_nan_str_len = sizeof(json_nan_str) - 1; -static const char json_true_str[] = "true"; -static const int json_true_str_len = sizeof(json_true_str) - 1; -static const char json_false_str[] = "false"; -static const int json_false_str_len = sizeof(json_false_str) - 1; - -static const char* json_tokener_errors[] = { - "success", - "continue", - "nesting too deep", - "unexpected end of data", - "unexpected character", - "null expected", - "boolean expected", - "number expected", - "array value separator ',' expected", - "quoted object property name expected", - "object property name separator ':' expected", - "object value separator ',' expected", - "invalid string sequence", - "expected comment", - "buffer size overflow" -}; - -const char *json_tokener_error_desc(enum json_tokener_error jerr) -{ - int jerr_int = (int)jerr; - if (jerr_int < 0 || jerr_int >= (int)(sizeof(json_tokener_errors) / sizeof(json_tokener_errors[0]))) - return "Unknown error, invalid json_tokener_error value passed to json_tokener_error_desc()"; - return json_tokener_errors[jerr]; -} - -enum json_tokener_error json_tokener_get_error(json_tokener *tok) -{ - return tok->err; -} - -/* Stuff for decoding unicode sequences */ -#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_replacement_char[3] = { 0xEF, 0xBF, 0xBD }; - -struct json_tokener* json_tokener_new_ex(int depth) -{ - struct json_tokener *tok; - - tok = (struct json_tokener*)calloc(1, sizeof(struct json_tokener)); - if (!tok) return NULL; - tok->stack = (struct json_tokener_srec *)calloc(depth, sizeof(struct json_tokener_srec)); - if (!tok->stack) { - free(tok); - return NULL; - } - tok->pb = printbuf_new(); - tok->max_depth = depth; - json_tokener_reset(tok); - return tok; -} - -struct json_tokener* json_tokener_new(void) -{ - return json_tokener_new_ex(JSON_TOKENER_DEFAULT_DEPTH); -} - -void json_tokener_free(struct json_tokener *tok) -{ - json_tokener_reset(tok); - if (tok->pb) printbuf_free(tok->pb); - if (tok->stack) free(tok->stack); - free(tok); -} - -static void json_tokener_reset_level(struct json_tokener *tok, int depth) -{ - tok->stack[depth].state = json_tokener_state_eatws; - tok->stack[depth].saved_state = json_tokener_state_start; - json_object_put(tok->stack[depth].current); - tok->stack[depth].current = NULL; - free(tok->stack[depth].obj_field_name); - tok->stack[depth].obj_field_name = NULL; -} - -void json_tokener_reset(struct json_tokener *tok) -{ - int i; - if (!tok) - return; - - for(i = tok->depth; i >= 0; i--) - json_tokener_reset_level(tok, i); - tok->depth = 0; - tok->err = json_tokener_success; -} - -struct json_object* json_tokener_parse(const char *str) -{ - enum json_tokener_error jerr_ignored; - struct json_object* obj; - obj = json_tokener_parse_verbose(str, &jerr_ignored); - return obj; -} - -struct json_object* json_tokener_parse_verbose(const char *str, enum json_tokener_error *error) -{ - struct json_tokener* tok; - struct json_object* obj; - - tok = json_tokener_new(); - if (!tok) - return NULL; - obj = json_tokener_parse_ex(tok, str, -1); - *error = tok->err; - if(tok->err != json_tokener_success) { - if (obj != NULL) - json_object_put(obj); - obj = NULL; - } - - json_tokener_free(tok); - return obj; -} - -#define state tok->stack[tok->depth].state -#define saved_state tok->stack[tok->depth].saved_state -#define current tok->stack[tok->depth].current -#define obj_field_name tok->stack[tok->depth].obj_field_name - -/* Optimization: - * json_tokener_parse_ex() consumed a lot of CPU in its main loop, - * iterating character-by character. A large performance boost is - * achieved by using tighter loops to locally handle units such as - * comments and strings. Loops that handle an entire token within - * their scope also gather entire strings and pass them to - * printbuf_memappend() in a single call, rather than calling - * printbuf_memappend() one char at a time. - * - * PEEK_CHAR() and ADVANCE_CHAR() macros are used for code that is - * common to both the main loop and the tighter loops. - */ - -/* PEEK_CHAR(dest, tok) macro: - * Peeks at the current char and stores it in dest. - * Returns 1 on success, sets tok->err and returns 0 if no more chars. - * Implicit inputs: str, len vars - */ -#define PEEK_CHAR(dest, tok) \ - (((tok)->char_offset == len) ? \ - (((tok)->depth == 0 && state == json_tokener_state_eatws && saved_state == json_tokener_state_finish) ? \ - (((tok)->err = json_tokener_success), 0) \ - : \ - (((tok)->err = json_tokener_continue), 0) \ - ) : \ - (((dest) = *str), 1) \ - ) - -/* ADVANCE_CHAR() macro: - * Incrementes str & tok->char_offset. - * For convenience of existing conditionals, returns the old value of c (0 on eof) - * Implicit inputs: c var - */ -#define ADVANCE_CHAR(str, tok) \ - ( ++(str), ((tok)->char_offset)++, c) - - -/* End optimization macro defs */ - - -struct json_object* json_tokener_parse_ex(struct json_tokener *tok, - const char *str, int len) -{ - struct json_object *obj = NULL; - char c = '\1'; -#ifdef HAVE_SETLOCALE - char *oldlocale=NULL, *tmplocale; - - tmplocale = setlocale(LC_NUMERIC, NULL); - if (tmplocale) oldlocale = strdup(tmplocale); - setlocale(LC_NUMERIC, "C"); -#endif - - tok->char_offset = 0; - tok->err = json_tokener_success; - - /* this interface is presently not 64-bit clean due to the int len argument - and the internal printbuf interface that takes 32-bit int len arguments - so the function limits the maximum string size to INT32_MAX (2GB). - If the function is called with len == -1 then strlen is called to check - the string length is less than INT32_MAX (2GB) */ - if ((len < -1) || (len == -1 && strlen(str) > INT32_MAX)) { - tok->err = json_tokener_error_size; - return NULL; - } - - while (PEEK_CHAR(c, tok)) { - - redo_char: - switch(state) { - - case json_tokener_state_eatws: - /* Advance until we change state */ - while (isspace((int)c)) { - if ((!ADVANCE_CHAR(str, tok)) || (!PEEK_CHAR(c, tok))) - goto out; - } - if(c == '/' && !(tok->flags & JSON_TOKENER_STRICT)) { - printbuf_reset(tok->pb); - printbuf_memappend_fast(tok->pb, &c, 1); - state = json_tokener_state_comment_start; - } else { - state = saved_state; - goto redo_char; - } - break; - - case json_tokener_state_start: - switch(c) { - case '{': - state = json_tokener_state_eatws; - saved_state = json_tokener_state_object_field_start; - current = json_object_new_object(); - break; - case '[': - state = json_tokener_state_eatws; - saved_state = json_tokener_state_array; - current = json_object_new_array(); - break; - case 'I': - case 'i': - state = json_tokener_state_inf; - printbuf_reset(tok->pb); - tok->st_pos = 0; - goto redo_char; - case 'N': - case 'n': - state = json_tokener_state_null; // or NaN - printbuf_reset(tok->pb); - tok->st_pos = 0; - goto redo_char; - case '\'': - if (tok->flags & JSON_TOKENER_STRICT) { - /* in STRICT mode only double-quote are allowed */ - tok->err = json_tokener_error_parse_unexpected; - goto out; - } - case '"': - state = json_tokener_state_string; - printbuf_reset(tok->pb); - tok->quote_char = c; - break; - case 'T': - case 't': - case 'F': - case 'f': - state = json_tokener_state_boolean; - printbuf_reset(tok->pb); - tok->st_pos = 0; - goto redo_char; -#if defined(__GNUC__) - case '0' ... '9': -#else - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': -#endif - case '-': - state = json_tokener_state_number; - printbuf_reset(tok->pb); - tok->is_double = 0; - goto redo_char; - default: - tok->err = json_tokener_error_parse_unexpected; - goto out; - } - break; - - case json_tokener_state_finish: - if(tok->depth == 0) goto out; - obj = json_object_get(current); - json_tokener_reset_level(tok, tok->depth); - tok->depth--; - goto redo_char; - - case json_tokener_state_inf: /* aka starts with 'i' */ - { - int size_inf; - int is_negative = 0; - - printbuf_memappend_fast(tok->pb, &c, 1); - size_inf = json_min(tok->st_pos+1, json_inf_str_len); - char *infbuf = tok->pb->buf; - if (*infbuf == '-') - { - infbuf++; - is_negative = 1; - } - if ((!(tok->flags & JSON_TOKENER_STRICT) && - strncasecmp(json_inf_str, infbuf, size_inf) == 0) || - (strncmp(json_inf_str, infbuf, size_inf) == 0) - ) - { - if (tok->st_pos == json_inf_str_len) - { - current = json_object_new_double(is_negative ? -INFINITY : INFINITY); - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - } else { - tok->err = json_tokener_error_parse_unexpected; - goto out; - } - tok->st_pos++; - } - break; - case json_tokener_state_null: /* aka starts with 'n' */ - { - int size; - int size_nan; - printbuf_memappend_fast(tok->pb, &c, 1); - size = json_min(tok->st_pos+1, json_null_str_len); - size_nan = json_min(tok->st_pos+1, json_nan_str_len); - if((!(tok->flags & JSON_TOKENER_STRICT) && - strncasecmp(json_null_str, tok->pb->buf, size) == 0) - || (strncmp(json_null_str, tok->pb->buf, size) == 0) - ) { - if (tok->st_pos == json_null_str_len) { - current = NULL; - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - } - else if ((!(tok->flags & JSON_TOKENER_STRICT) && - strncasecmp(json_nan_str, tok->pb->buf, size_nan) == 0) || - (strncmp(json_nan_str, tok->pb->buf, size_nan) == 0) - ) - { - if (tok->st_pos == json_nan_str_len) - { - current = json_object_new_double(NAN); - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - } else { - tok->err = json_tokener_error_parse_null; - goto out; - } - tok->st_pos++; - } - break; - - case json_tokener_state_comment_start: - if(c == '*') { - state = json_tokener_state_comment; - } else if(c == '/') { - state = json_tokener_state_comment_eol; - } else { - tok->err = json_tokener_error_parse_comment; - goto out; - } - printbuf_memappend_fast(tok->pb, &c, 1); - break; - - case json_tokener_state_comment: - { - /* Advance until we change state */ - const char *case_start = str; - while(c != '*') { - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - goto out; - } - } - printbuf_memappend_fast(tok->pb, case_start, 1+str-case_start); - state = json_tokener_state_comment_end; - } - break; - - case json_tokener_state_comment_eol: - { - /* Advance until we change state */ - const char *case_start = str; - while(c != '\n') { - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - goto out; - } - } - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); - state = json_tokener_state_eatws; - } - break; - - case json_tokener_state_comment_end: - printbuf_memappend_fast(tok->pb, &c, 1); - if(c == '/') { - MC_DEBUG("json_tokener_comment: %s\n", tok->pb->buf); - state = json_tokener_state_eatws; - } else { - state = json_tokener_state_comment; - } - break; - - case json_tokener_state_string: - { - /* Advance until we change state */ - const char *case_start = str; - while(1) { - if(c == tok->quote_char) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - current = json_object_new_string_len(tok->pb->buf, tok->pb->bpos); - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - break; - } else if(c == '\\') { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - saved_state = json_tokener_state_string; - state = json_tokener_state_string_escape; - break; - } - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - goto out; - } - } - } - break; - - case json_tokener_state_string_escape: - switch(c) { - case '"': - case '\\': - case '/': - printbuf_memappend_fast(tok->pb, &c, 1); - state = saved_state; - break; - case 'b': - case 'n': - case 'r': - case 't': - case 'f': - if(c == 'b') printbuf_memappend_fast(tok->pb, "\b", 1); - else if(c == 'n') printbuf_memappend_fast(tok->pb, "\n", 1); - else if(c == 'r') printbuf_memappend_fast(tok->pb, "\r", 1); - else if(c == 't') printbuf_memappend_fast(tok->pb, "\t", 1); - else if(c == 'f') printbuf_memappend_fast(tok->pb, "\f", 1); - state = saved_state; - break; - case 'u': - tok->ucs_char = 0; - tok->st_pos = 0; - state = json_tokener_state_escape_unicode; - break; - default: - tok->err = json_tokener_error_parse_string; - goto out; - } - break; - - case json_tokener_state_escape_unicode: - { - unsigned int got_hi_surrogate = 0; - - /* Handle a 4-byte sequence, or two sequences if a surrogate pair */ - while(1) { - if(strchr(json_hex_chars, c)) { - tok->ucs_char += ((unsigned int)jt_hexdigit(c) << ((3-tok->st_pos++)*4)); - if(tok->st_pos == 4) { - unsigned char unescaped_utf[4]; - - if (got_hi_surrogate) { - if (IS_LOW_SURROGATE(tok->ucs_char)) { - /* Recalculate the ucs_char, then fall thru to process normally */ - tok->ucs_char = DECODE_SURROGATE_PAIR(got_hi_surrogate, tok->ucs_char); - } else { - /* Hi surrogate was not followed by a low surrogate */ - /* Replace the hi and process the rest normally */ - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - } - got_hi_surrogate = 0; - } - - if (tok->ucs_char < 0x80) { - unescaped_utf[0] = tok->ucs_char; - printbuf_memappend_fast(tok->pb, (char*)unescaped_utf, 1); - } else if (tok->ucs_char < 0x800) { - unescaped_utf[0] = 0xc0 | (tok->ucs_char >> 6); - unescaped_utf[1] = 0x80 | (tok->ucs_char & 0x3f); - printbuf_memappend_fast(tok->pb, (char*)unescaped_utf, 2); - } else if (IS_HIGH_SURROGATE(tok->ucs_char)) { - /* Got a high surrogate. Remember it and look for the - * the beginning of another sequence, which should be the - * low surrogate. - */ - got_hi_surrogate = tok->ucs_char; - /* Not at end, and the next two chars should be "\u" */ - if ((tok->char_offset+1 != len) && - (tok->char_offset+2 != len) && - (str[1] == '\\') && - (str[2] == 'u')) - { - /* Advance through the 16 bit surrogate, and move on to the - * next sequence. The next step is to process the following - * characters. - */ - if( !ADVANCE_CHAR(str, tok) || !ADVANCE_CHAR(str, tok) ) { - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - } - /* Advance to the first char of the next sequence and - * continue processing with the next sequence. - */ - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - goto out; - } - tok->ucs_char = 0; - tok->st_pos = 0; - continue; /* other json_tokener_state_escape_unicode */ - } else { - /* Got a high surrogate without another sequence following - * it. Put a replacement char in for the hi surrogate - * and pretend we finished. - */ - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - } - } else if (IS_LOW_SURROGATE(tok->ucs_char)) { - /* Got a low surrogate not preceded by a high */ - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - } else if (tok->ucs_char < 0x10000) { - unescaped_utf[0] = 0xe0 | (tok->ucs_char >> 12); - unescaped_utf[1] = 0x80 | ((tok->ucs_char >> 6) & 0x3f); - unescaped_utf[2] = 0x80 | (tok->ucs_char & 0x3f); - printbuf_memappend_fast(tok->pb, (char*)unescaped_utf, 3); - } else if (tok->ucs_char < 0x110000) { - unescaped_utf[0] = 0xf0 | ((tok->ucs_char >> 18) & 0x07); - unescaped_utf[1] = 0x80 | ((tok->ucs_char >> 12) & 0x3f); - unescaped_utf[2] = 0x80 | ((tok->ucs_char >> 6) & 0x3f); - unescaped_utf[3] = 0x80 | (tok->ucs_char & 0x3f); - printbuf_memappend_fast(tok->pb, (char*)unescaped_utf, 4); - } else { - /* Don't know what we got--insert the replacement char */ - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - } - state = saved_state; - break; - } - } else { - tok->err = json_tokener_error_parse_string; - goto out; - } - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - if (got_hi_surrogate) /* Clean up any pending chars */ - printbuf_memappend_fast(tok->pb, (char*)utf8_replacement_char, 3); - goto out; - } - } - } - break; - - case json_tokener_state_boolean: - { - int size1, size2; - printbuf_memappend_fast(tok->pb, &c, 1); - size1 = json_min(tok->st_pos+1, json_true_str_len); - size2 = json_min(tok->st_pos+1, json_false_str_len); - if((!(tok->flags & JSON_TOKENER_STRICT) && - strncasecmp(json_true_str, tok->pb->buf, size1) == 0) - || (strncmp(json_true_str, tok->pb->buf, size1) == 0) - ) { - if(tok->st_pos == json_true_str_len) { - current = json_object_new_boolean(1); - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - } else if((!(tok->flags & JSON_TOKENER_STRICT) && - strncasecmp(json_false_str, tok->pb->buf, size2) == 0) - || (strncmp(json_false_str, tok->pb->buf, size2) == 0)) { - if(tok->st_pos == json_false_str_len) { - current = json_object_new_boolean(0); - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - } else { - tok->err = json_tokener_error_parse_boolean; - goto out; - } - tok->st_pos++; - } - break; - - case json_tokener_state_number: - { - /* Advance until we change state */ - const char *case_start = str; - int case_len=0; - while(c && strchr(json_number_chars, c)) { - ++case_len; - if(c == '.' || c == 'e' || c == 'E') - tok->is_double = 1; - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, case_start, case_len); - goto out; - } - } - if (case_len>0) - printbuf_memappend_fast(tok->pb, case_start, case_len); - - // Check for -Infinity - if (tok->pb->buf[0] == '-' && case_len == 1 && - (c == 'i' || c == 'I')) - { - state = json_tokener_state_inf; - goto redo_char; - } - } - { - int64_t num64; - double numd; - if (!tok->is_double && json_parse_int64(tok->pb->buf, &num64) == 0) { - if (num64 && tok->pb->buf[0]=='0' && (tok->flags & JSON_TOKENER_STRICT)) { - /* in strict mode, number must not start with 0 */ - tok->err = json_tokener_error_parse_number; - goto out; - } - current = json_object_new_int64(num64); - } - else if(tok->is_double && json_parse_double(tok->pb->buf, &numd) == 0) - { - current = json_object_new_double_s(numd, tok->pb->buf); - } else { - tok->err = json_tokener_error_parse_number; - goto out; - } - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - goto redo_char; - } - break; - - case json_tokener_state_array_after_sep: - case json_tokener_state_array: - if(c == ']') { - if (state == json_tokener_state_array_after_sep && - (tok->flags & JSON_TOKENER_STRICT)) - { - tok->err = json_tokener_error_parse_unexpected; - goto out; - } - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - } else { - if(tok->depth >= tok->max_depth-1) { - tok->err = json_tokener_error_depth; - goto out; - } - state = json_tokener_state_array_add; - tok->depth++; - json_tokener_reset_level(tok, tok->depth); - goto redo_char; - } - break; - - case json_tokener_state_array_add: - json_object_array_add(current, obj); - saved_state = json_tokener_state_array_sep; - state = json_tokener_state_eatws; - goto redo_char; - - case json_tokener_state_array_sep: - if(c == ']') { - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - } else if(c == ',') { - saved_state = json_tokener_state_array_after_sep; - state = json_tokener_state_eatws; - } else { - tok->err = json_tokener_error_parse_array; - goto out; - } - break; - - case json_tokener_state_object_field_start: - case json_tokener_state_object_field_start_after_sep: - if(c == '}') { - if (state == json_tokener_state_object_field_start_after_sep && - (tok->flags & JSON_TOKENER_STRICT)) - { - tok->err = json_tokener_error_parse_unexpected; - goto out; - } - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - } else if (c == '"' || c == '\'') { - tok->quote_char = c; - printbuf_reset(tok->pb); - state = json_tokener_state_object_field; - } else { - tok->err = json_tokener_error_parse_object_key_name; - goto out; - } - break; - - case json_tokener_state_object_field: - { - /* Advance until we change state */ - const char *case_start = str; - while(1) { - if(c == tok->quote_char) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - obj_field_name = strdup(tok->pb->buf); - saved_state = json_tokener_state_object_field_end; - state = json_tokener_state_eatws; - break; - } else if(c == '\\') { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - saved_state = json_tokener_state_object_field; - state = json_tokener_state_string_escape; - break; - } - if (!ADVANCE_CHAR(str, tok) || !PEEK_CHAR(c, tok)) { - printbuf_memappend_fast(tok->pb, case_start, str-case_start); - goto out; - } - } - } - break; - - case json_tokener_state_object_field_end: - if(c == ':') { - saved_state = json_tokener_state_object_value; - state = json_tokener_state_eatws; - } else { - tok->err = json_tokener_error_parse_object_key_sep; - goto out; - } - break; - - case json_tokener_state_object_value: - if(tok->depth >= tok->max_depth-1) { - tok->err = json_tokener_error_depth; - goto out; - } - state = json_tokener_state_object_value_add; - tok->depth++; - json_tokener_reset_level(tok, tok->depth); - goto redo_char; - - case json_tokener_state_object_value_add: - json_object_object_add(current, obj_field_name, obj); - free(obj_field_name); - obj_field_name = NULL; - saved_state = json_tokener_state_object_sep; - state = json_tokener_state_eatws; - goto redo_char; - - case json_tokener_state_object_sep: - if(c == '}') { - saved_state = json_tokener_state_finish; - state = json_tokener_state_eatws; - } else if(c == ',') { - saved_state = json_tokener_state_object_field_start_after_sep; - state = json_tokener_state_eatws; - } else { - tok->err = json_tokener_error_parse_object_value_sep; - goto out; - } - break; - - } - if (!ADVANCE_CHAR(str, tok)) - goto out; - } /* while(POP_CHAR) */ - - out: - if (c && - (state == json_tokener_state_finish) && - (tok->depth == 0) && - (tok->flags & JSON_TOKENER_STRICT)) { - /* unexpected char after JSON data */ - tok->err = json_tokener_error_parse_unexpected; - } - if (!c) { /* We hit an eof char (0) */ - if(state != json_tokener_state_finish && - saved_state != json_tokener_state_finish) - tok->err = json_tokener_error_parse_eof; - } - -#ifdef HAVE_SETLOCALE - setlocale(LC_NUMERIC, oldlocale); - if (oldlocale) free(oldlocale); -#endif - - if (tok->err == json_tokener_success) - { - json_object *ret = json_object_get(current); - int ii; - - /* Partially reset, so we parse additional objects on subsequent calls. */ - for(ii = tok->depth; ii >= 0; ii--) - json_tokener_reset_level(tok, ii); - return ret; - } - - MC_DEBUG("json_tokener_parse_ex: error %s at offset %d\n", - json_tokener_errors[tok->err], tok->char_offset); - return NULL; -} - -void json_tokener_set_flags(struct json_tokener *tok, int flags) -{ - tok->flags = flags; -} |