upload android base code part4

android/hardware/qcom/msm8998/json-c/json_util.c

@@ -0,0 +1,299 @@
+/*
+ * $Id: json_util.c,v 1.4 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"
+#undef realloc
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif /* HAVE_SYS_TYPES_H */
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif /* HAVE_SYS_STAT_H */
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif /* HAVE_FCNTL_H */
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#ifdef WIN32
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <io.h>
+#endif /* defined(WIN32) */
+
+#if !defined(HAVE_OPEN) && defined(WIN32)
+# define open _open
+#endif
+
+#if !defined(HAVE_SNPRINTF) && defined(_MSC_VER)
+  /* MSC has the version as _snprintf */
+# define snprintf _snprintf
+#elif !defined(HAVE_SNPRINTF)
+# error You do not have snprintf on your system.
+#endif /* HAVE_SNPRINTF */
+
+#include "debug.h"
+#include "printbuf.h"
+#include "json_inttypes.h"
+#include "json_object.h"
+#include "json_tokener.h"
+#include "json_util.h"
+
+static int sscanf_is_broken = 0;
+static int sscanf_is_broken_testdone = 0;
+static void sscanf_is_broken_test(void);
+
+struct json_object* json_object_from_file(const char *filename)
+{
+  struct printbuf *pb;
+  struct json_object *obj;
+  char buf[JSON_FILE_BUF_SIZE];
+  int fd, ret;
+
+  if((fd = open(filename, O_RDONLY)) < 0) {
+    MC_ERROR("json_object_from_file: error opening file %s: %s\n",
+	     filename, strerror(errno));
+    return NULL;
+  }
+  if(!(pb = printbuf_new())) {
+    close(fd);
+    MC_ERROR("json_object_from_file: printbuf_new failed\n");
+    return NULL;
+  }
+  while((ret = read(fd, buf, JSON_FILE_BUF_SIZE)) > 0) {
+    printbuf_memappend(pb, buf, ret);
+  }
+  close(fd);
+  if(ret < 0) {
+    MC_ERROR("json_object_from_file: error reading file %s: %s\n",
+	     filename, strerror(errno));
+    printbuf_free(pb);
+    return NULL;
+  }
+  obj = json_tokener_parse(pb->buf);
+  printbuf_free(pb);
+  return obj;
+}
+
+/* extended "format and write to file" function */
+
+int json_object_to_file_ext(const char *filename, struct json_object *obj, int flags)
+{
+  const char *json_str;
+  int fd, ret;
+  unsigned int wpos, wsize;
+
+  if(!obj) {
+    MC_ERROR("json_object_to_file: object is null\n");
+    return -1;
+  }
+
+  if((fd = open(filename, O_WRONLY | O_TRUNC | O_CREAT, 0644)) < 0) {
+    MC_ERROR("json_object_to_file: error opening file %s: %s\n",
+	     filename, strerror(errno));
+    return -1;
+  }
+
+  if(!(json_str = json_object_to_json_string_ext(obj,flags))) {
+    close(fd);
+    return -1;
+  }
+
+  wsize = (unsigned int)(strlen(json_str) & UINT_MAX); /* CAW: probably unnecessary, but the most 64bit safe */
+  wpos = 0;
+  while(wpos < wsize) {
+    if((ret = write(fd, json_str + wpos, wsize-wpos)) < 0) {
+      close(fd);
+      MC_ERROR("json_object_to_file: error writing file %s: %s\n",
+	     filename, strerror(errno));
+      return -1;
+    }
+
+	/* because of the above check for ret < 0, we can safely cast and add */
+    wpos += (unsigned int)ret;
+  }
+
+  close(fd);
+  return 0;
+}
+
+// backwards compatible "format and write to file" function
+
+int json_object_to_file(const char *filename, struct json_object *obj)
+{
+  return json_object_to_file_ext(filename, obj, JSON_C_TO_STRING_PLAIN);
+}
+
+int json_parse_double(const char *buf, double *retval)
+{
+  return (sscanf(buf, "%lf", retval)==1 ? 0 : 1);
+}
+
+/*
+ * Not all implementations of sscanf actually work properly.
+ * Check whether the one we're currently using does, and if
+ * it's broken, enable the workaround code.
+ */
+static void sscanf_is_broken_test()
+{
+	int64_t num64;
+	int ret_errno, is_int64_min, ret_errno2, is_int64_max;
+
+	(void)sscanf(" -01234567890123456789012345", "%" SCNd64, &num64);
+	ret_errno = errno;
+	is_int64_min = (num64 == INT64_MIN);
+
+	(void)sscanf(" 01234567890123456789012345", "%" SCNd64, &num64);
+	ret_errno2 = errno;
+	is_int64_max = (num64 == INT64_MAX);
+
+	if (ret_errno != ERANGE || !is_int64_min ||
+	    ret_errno2 != ERANGE || !is_int64_max)
+	{
+		MC_DEBUG("sscanf_is_broken_test failed, enabling workaround code\n");
+		sscanf_is_broken = 1;
+	}
+}
+
+int json_parse_int64(const char *buf, int64_t *retval)
+{
+	int64_t num64;
+	const char *buf_sig_digits;
+	int orig_has_neg;
+	int saved_errno;
+
+	if (!sscanf_is_broken_testdone)
+	{
+		sscanf_is_broken_test();
+		sscanf_is_broken_testdone = 1;
+	}
+
+	// Skip leading spaces
+	while (isspace((int)*buf) && *buf)
+		buf++;
+
+	errno = 0; // sscanf won't always set errno, so initialize
+	if (sscanf(buf, "%" SCNd64, &num64) != 1)
+	{
+		MC_DEBUG("Failed to parse, sscanf != 1\n");
+		return 1;
+	}
+
+	saved_errno = errno;
+	buf_sig_digits = buf;
+	orig_has_neg = 0;
+	if (*buf_sig_digits == '-')
+	{
+		buf_sig_digits++;
+		orig_has_neg = 1;
+	}
+
+	// Not all sscanf implementations actually work
+	if (sscanf_is_broken && saved_errno != ERANGE)
+	{
+		char buf_cmp[100];
+		char *buf_cmp_start = buf_cmp;
+		int recheck_has_neg = 0;
+		int buf_cmp_len;
+
+		// Skip leading zeros, but keep at least one digit
+		while (buf_sig_digits[0] == '0' && buf_sig_digits[1] != '\0')
+			buf_sig_digits++;
+		if (num64 == 0) // assume all sscanf impl's will parse -0 to 0
+			orig_has_neg = 0; // "-0" is the same as just plain "0"
+
+		snprintf(buf_cmp_start, sizeof(buf_cmp), "%" PRId64, num64);
+		if (*buf_cmp_start == '-')
+		{
+			recheck_has_neg = 1;
+			buf_cmp_start++;
+		}
+		// No need to skip leading spaces or zeros here.
+
+		buf_cmp_len = strlen(buf_cmp_start);
+		/**
+		 * If the sign is different, or
+		 * some of the digits are different, or
+		 * there is another digit present in the original string
+		 * then we have NOT successfully parsed the value.
+		 */
+		if (orig_has_neg != recheck_has_neg ||
+		    strncmp(buf_sig_digits, buf_cmp_start, strlen(buf_cmp_start)) != 0 ||
+			((int)strlen(buf_sig_digits) != buf_cmp_len &&
+			 isdigit((int)buf_sig_digits[buf_cmp_len])
+		    )
+		   )
+		{
+			saved_errno = ERANGE;
+		}
+	}
+
+	// Not all sscanf impl's set the value properly when out of range.
+	// Always do this, even for properly functioning implementations,
+	// since it shouldn't slow things down much.
+	if (saved_errno == ERANGE)
+	{
+		if (orig_has_neg)
+			num64 = INT64_MIN;
+		else
+			num64 = INT64_MAX;
+	}
+	*retval = num64;
+	return 0;
+}
+
+#ifndef HAVE_REALLOC
+void* rpl_realloc(void* p, size_t n)
+{
+	if (n == 0)
+		n = 1;
+	if (p == 0)
+		return malloc(n);
+	return realloc(p, n);
+}
+#endif
+
+#define NELEM(a)        (sizeof(a) / sizeof(a[0]))
+static const char* json_type_name[] = {
+  /* If you change this, be sure to update the enum json_type definition too */
+  "null",
+  "boolean",
+  "double",
+  "int",
+  "object",
+  "array",
+  "string",
+};
+
+const char *json_type_to_name(enum json_type o_type)
+{
+	int o_type_int = (int)o_type;
+	if (o_type_int < 0 || o_type_int >= (int)NELEM(json_type_name))
+	{
+		MC_ERROR("json_type_to_name: type %d is out of range [0,%d]\n", o_type, NELEM(json_type_name));
+		return NULL;
+	}
+	return json_type_name[o_type];
+}
+