r18848: Save the json library before I start hacking on it. I'm going to be

converting it to natively use ejs objects, instead of its own internal
format.
(This used to be commit 119db8924a6e9c40a94c76c57198877875c53afc)

1 files changed, 465 insertions, 0 deletions

diff --git a/source4/lib/json/json_tokener.c b/source4/lib/json/json_tokener.c
new file mode 100644
index 00000000000..a3ebf10878b
--- /dev/null
+++ b/source4/lib/json/json_tokener.c
@@ -0,0 +1,465 @@
+/*
+ * $Id: json_tokener.c,v 1.19 2006/01/30 23:07:57 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.
+ *
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+#include "bits.h"
+#include "debug.h"
+#include "printbuf.h"
+#include "arraylist.h"
+#include "json_object.h"
+#include "json_tokener.h"
+
+#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 */
+
+
+static struct json_object* json_tokener_do_parse(struct json_tokener *this);
+
+struct json_object* json_tokener_parse(char * s)
+{
+  struct json_tokener tok;
+  struct json_object* obj;
+
+  tok.source = s;
+  tok.pos = 0;
+  tok.pb = printbuf_new();
+  obj = json_tokener_do_parse(&tok);
+  printbuf_free(tok.pb);
+  return obj;
+}
+
+#if !HAVE_STRNDUP
+/* CAW: compliant version of strndup() */
+char* strndup(const char* str, size_t n)
+{
+	if(str) {
+  	    size_t len = strlen(str);
+		size_t nn = min(len,n);
+		char* s = (char*)malloc(sizeof(char) * (nn + 1));
+
+		if(s) {
+		   memcpy(s, str, nn);
+		   s[nn] = '\0';
+		}
+
+		return s;
+	}
+
+	return NULL;
+}
+#endif
+
+static struct json_object* json_tokener_do_parse(struct json_tokener *this)
+{
+  enum json_tokener_state state, saved_state;
+  enum json_tokener_error err = json_tokener_success;
+  struct json_object *current = NULL, *obj;
+  char *obj_field_name = NULL;
+  char quote_char;
+  int deemed_double, start_offset;
+  char c;
+
+  state = json_tokener_state_eatws;
+  saved_state = json_tokener_state_start;
+
+  do {
+    c = this->source[this->pos];
+    switch(state) {
+
+    case json_tokener_state_eatws:
+      if(isspace(c)) {
+	this->pos++;
+      } else if(c == '/') {
+	state = json_tokener_state_comment_start;
+	start_offset = this->pos++;
+      } else {
+	state = saved_state;
+      }
+      break;
+
+    case json_tokener_state_start:
+      switch(c) {
+      case '{':
+	state = json_tokener_state_eatws;
+	saved_state = json_tokener_state_object;
+	current = json_object_new_object();
+	this->pos++;
+	break;
+      case '[':
+	state = json_tokener_state_eatws;
+	saved_state = json_tokener_state_array;
+	current = json_object_new_array();
+	this->pos++;
+	break;
+      case 'N':
+      case 'n':
+	state = json_tokener_state_null;
+	start_offset = this->pos++;
+	break;
+      case '"':
+      case '\'':
+	quote_char = c;
+	printbuf_reset(this->pb);
+	state = json_tokener_state_string;
+	start_offset = ++this->pos;
+	break;
+      case 'T':
+      case 't':
+      case 'F':
+      case 'f':
+	state = json_tokener_state_boolean;
+	start_offset = this->pos++;
+	break;
+#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 '-':
+	deemed_double = 0;
+	state = json_tokener_state_number;
+	start_offset = this->pos++;
+	break;
+      default:
+	err = json_tokener_error_parse_unexpected;
+	goto out;
+      }
+      break;
+
+    case json_tokener_state_finish:
+      goto out;
+
+    case json_tokener_state_null:
+      if(strncasecmp("null", this->source + start_offset,
+		     this->pos - start_offset))
+	return error_ptr(-json_tokener_error_parse_null);
+      if(this->pos - start_offset == 4) {
+	current = NULL;
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else {
+	this->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 {
+	err = json_tokener_error_parse_comment;
+	goto out;
+      }
+      this->pos++;
+      break;
+
+    case json_tokener_state_comment:
+      if(c == '*') state = json_tokener_state_comment_end;
+      this->pos++;
+      break;
+
+    case json_tokener_state_comment_eol:
+      if(c == '\n') {
+	if(mc_get_debug()) {
+	  char *tmp = strndup(this->source + start_offset,
+			      this->pos - start_offset);
+	  mc_debug("json_tokener_comment: %s\n", tmp);
+	  free(tmp);
+	}
+	state = json_tokener_state_eatws;
+      }
+      this->pos++;
+      break;
+
+    case json_tokener_state_comment_end:
+      if(c == '/') {
+	if(mc_get_debug()) {
+	  char *tmp = strndup(this->source + start_offset,
+			      this->pos - start_offset + 1);
+	  mc_debug("json_tokener_comment: %s\n", tmp);
+	  free(tmp);
+	}
+	state = json_tokener_state_eatws;
+      } else {
+	state = json_tokener_state_comment;
+      }
+      this->pos++;
+      break;
+
+    case json_tokener_state_string:
+      if(c == quote_char) {
+	printbuf_memappend(this->pb, this->source + start_offset,
+			   this->pos - start_offset);
+	current = json_object_new_string(this->pb->buf);
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else if(c == '\\') {
+	saved_state = json_tokener_state_string;
+	state = json_tokener_state_string_escape;
+      }
+      this->pos++;
+      break;
+
+    case json_tokener_state_string_escape:
+      switch(c) {
+      case '"':
+      case '\\':
+	printbuf_memappend(this->pb, this->source + start_offset,
+			   this->pos - start_offset - 1);
+	start_offset = this->pos++;
+	state = saved_state;
+	break;
+      case 'b':
+      case 'n':
+      case 'r':
+      case 't':
+	printbuf_memappend(this->pb, this->source + start_offset,
+			   this->pos - start_offset - 1);
+	if(c == 'b') printbuf_memappend(this->pb, "\b", 1);
+	else if(c == 'n') printbuf_memappend(this->pb, "\n", 1);
+	else if(c == 'r') printbuf_memappend(this->pb, "\r", 1);
+	else if(c == 't') printbuf_memappend(this->pb, "\t", 1);
+	start_offset = ++this->pos;
+	state = saved_state;
+	break;
+      case 'u':
+	printbuf_memappend(this->pb, this->source + start_offset,
+			   this->pos - start_offset - 1);
+	start_offset = ++this->pos;
+	state = json_tokener_state_escape_unicode;
+	break;
+      default:
+	err = json_tokener_error_parse_string;
+	goto out;
+      }
+      break;
+
+    case json_tokener_state_escape_unicode:
+      if(strchr(json_hex_chars, c)) {
+	this->pos++;
+	if(this->pos - start_offset == 4) {
+	  unsigned char utf_out[3];
+	  unsigned int ucs_char =
+	    (hexdigit(*(this->source + start_offset)) << 12) +
+	    (hexdigit(*(this->source + start_offset + 1)) << 8) +
+	    (hexdigit(*(this->source + start_offset + 2)) << 4) +
+	    hexdigit(*(this->source + start_offset + 3));
+	  if (ucs_char < 0x80) {
+	    utf_out[0] = ucs_char;
+	    printbuf_memappend(this->pb, (char*)utf_out, 1);
+	  } else if (ucs_char < 0x800) {
+	    utf_out[0] = 0xc0 | (ucs_char >> 6);
+	    utf_out[1] = 0x80 | (ucs_char & 0x3f);
+	    printbuf_memappend(this->pb, (char*)utf_out, 2);
+	  } else {
+	    utf_out[0] = 0xe0 | (ucs_char >> 12);
+	    utf_out[1] = 0x80 | ((ucs_char >> 6) & 0x3f);
+	    utf_out[2] = 0x80 | (ucs_char & 0x3f);
+	    printbuf_memappend(this->pb, (char*)utf_out, 3);
+	  }
+	  start_offset = this->pos;
+	  state = saved_state;
+	}
+      } else {
+	err = json_tokener_error_parse_string;
+	goto out;
+      }
+      break;
+
+    case json_tokener_state_boolean:
+      if(strncasecmp("true", this->source + start_offset,
+		 this->pos - start_offset) == 0) {
+	if(this->pos - start_offset == 4) {
+	  current = json_object_new_boolean(1);
+	  saved_state = json_tokener_state_finish;
+	  state = json_tokener_state_eatws;
+	} else {
+	  this->pos++;
+	}
+      } else if(strncasecmp("false", this->source + start_offset,
+			this->pos - start_offset) == 0) {
+	if(this->pos - start_offset == 5) {
+	  current = json_object_new_boolean(0);
+	  saved_state = json_tokener_state_finish;
+	  state = json_tokener_state_eatws;
+	} else {
+	  this->pos++;
+	}
+      } else {
+	err = json_tokener_error_parse_boolean;
+	goto out;
+      }
+      break;
+
+    case json_tokener_state_number:
+      if(!c || !strchr(json_number_chars, c)) {
+	int numi;
+	double numd;
+	char *tmp = strndup(this->source + start_offset,
+			    this->pos - start_offset);
+	if(!deemed_double && sscanf(tmp, "%d", &numi) == 1) {
+	  current = json_object_new_int(numi);
+	} else if(deemed_double && sscanf(tmp, "%lf", &numd) == 1) {
+	  current = json_object_new_double(numd);
+	} else {
+	  free(tmp);
+	  err = json_tokener_error_parse_number;
+	  goto out;
+	}
+	free(tmp);
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else {
+	if(c == '.' || c == 'e') deemed_double = 1;
+	this->pos++;
+      }
+      break;
+
+    case json_tokener_state_array:
+      if(c == ']') {
+	this->pos++;
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else {
+	obj = json_tokener_do_parse(this);
+	if(is_error(obj)) {
+	  err = -(enum json_tokener_error)obj;
+	  goto out;
+	}
+	json_object_array_add(current, obj);
+	saved_state = json_tokener_state_array_sep;
+	state = json_tokener_state_eatws;
+      }
+      break;
+
+    case json_tokener_state_array_sep:
+      if(c == ']') {
+	this->pos++;
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else if(c == ',') {
+	this->pos++;
+	saved_state = json_tokener_state_array;
+	state = json_tokener_state_eatws;
+      } else {
+	json_object_put(current);
+	return error_ptr(-json_tokener_error_parse_array);
+      }
+      break;
+
+    case json_tokener_state_object:
+      state = json_tokener_state_object_field_start;
+      start_offset = this->pos;
+      break;
+
+    case json_tokener_state_object_field_start:
+      if(c == '}') {
+	this->pos++;
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else if (c == '"' || c == '\'') {
+	quote_char = c;
+	printbuf_reset(this->pb);
+	state = json_tokener_state_object_field;
+	start_offset = ++this->pos;
+      } else {
+	err = json_tokener_error_parse_object;
+	goto out;
+      }
+      break;
+
+    case json_tokener_state_object_field:
+      if(c == quote_char) {
+	printbuf_memappend(this->pb, this->source + start_offset,
+			   this->pos - start_offset);
+	obj_field_name = strdup(this->pb->buf);
+	saved_state = json_tokener_state_object_field_end;
+	state = json_tokener_state_eatws;
+      } else if(c == '\\') {
+	saved_state = json_tokener_state_object_field;
+	state = json_tokener_state_string_escape;
+      }
+      this->pos++;
+      break;
+
+    case json_tokener_state_object_field_end:
+      if(c == ':') {
+	this->pos++;
+	saved_state = json_tokener_state_object_value;
+	state = json_tokener_state_eatws;
+      } else {
+	return error_ptr(-json_tokener_error_parse_object);
+      }
+      break;
+
+    case json_tokener_state_object_value:
+      obj = json_tokener_do_parse(this);
+      if(is_error(obj)) {
+	err = -(enum json_tokener_error)obj;
+	goto out;
+      }
+      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;
+      break;
+
+    case json_tokener_state_object_sep:
+      if(c == '}') {
+	this->pos++;
+	saved_state = json_tokener_state_finish;
+	state = json_tokener_state_eatws;
+      } else if(c == ',') {
+	this->pos++;
+	saved_state = json_tokener_state_object;
+	state = json_tokener_state_eatws;
+      } else {
+	err = json_tokener_error_parse_object;
+	goto out;
+      }
+      break;
+
+    }
+  } while(c);
+
+  if(state != json_tokener_state_finish &&
+     saved_state != json_tokener_state_finish)
+    err = json_tokener_error_parse_eof;
+
+ out:
+  free(obj_field_name);
+  if(err == json_tokener_success) return current;
+  mc_debug("json_tokener_do_parse: error=%d state=%d char=%c\n",
+	   err, state, c);
+  json_object_put(current);
+  return error_ptr(-err);
+}