* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
-* @ingroup API
-* @author Michal Migurski <mike-json@teczno.com>
-* @author Matt Knapp <mdknapp[at]gmail[dot]com>
-* @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
-* @copyright 2005 Michal Migurski
-* @version CVS: $Id: ApiFormatJson_json.php 45682 2009-01-12 19:06:33Z raymond $
-* @license http://www.opensource.org/licenses/bsd-license.php
-* @see http://pear.php.net/pepr/pepr-proposal-show.php?id=198
+* @ingroup API
+* @author Michal Migurski <mike-json@teczno.com>
+* @author Matt Knapp <mdknapp[at]gmail[dot]com>
+* @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
+* @copyright 2005 Michal Migurski
+* @version CVS: $Id: ApiFormatJson_json.php 45765 2009-01-15 10:18:44Z catrope $
+* @license http://www.opensource.org/licenses/bsd-license.php
+* @see http://pear.php.net/pepr/pepr-proposal-show.php?id=198
*/
/**
*/
class Services_JSON
{
- /**
- * constructs a new JSON instance
- *
- * @param int $use object behavior flags; combine with boolean-OR
- *
- * possible values:
- * - SERVICES_JSON_LOOSE_TYPE: loose typing.
- * "{...}" syntax creates associative arrays
- * instead of objects in decode().
- * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
- * Values which can't be encoded (e.g. resources)
- * appear as NULL instead of throwing errors.
- * By default, a deeply-nested resource will
- * bubble up with an error, so all return values
- * from encode() should be checked with isError()
- */
- function Services_JSON($use = 0)
- {
- $this->use = $use;
- }
-
- /**
- * convert a string from one UTF-16 char to one UTF-8 char
- *
- * Normally should be handled by mb_convert_encoding, but
- * provides a slower PHP-only method for installations
- * that lack the multibye string extension.
- *
- * @param string $utf16 UTF-16 character
- * @return string UTF-8 character
- * @access private
- */
- function utf162utf8($utf16)
- {
- // oh please oh please oh please oh please oh please
- if(function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
- }
-
- $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
-
- switch(true) {
- case ((0x7F & $bytes) == $bytes):
- // this case should never be reached, because we are in ASCII range
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0x7F & $bytes);
-
- case (0x07FF & $bytes) == $bytes:
- // return a 2-byte UTF-8 character
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0xC0 | (($bytes >> 6) & 0x1F))
- . chr(0x80 | ($bytes & 0x3F));
-
- case (0xFC00 & $bytes) == 0xD800 && strlen($utf16) >= 4 && (0xFC & ord($utf16{2})) == 0xDC:
- // return a 4-byte UTF-8 character
- $char = ((($bytes & 0x03FF) << 10)
- | ((ord($utf16{2}) & 0x03) << 8)
- | ord($utf16{3}));
- $char += 0x10000;
- return chr(0xF0 | (($char >> 18) & 0x07))
- . chr(0x80 | (($char >> 12) & 0x3F))
- . chr(0x80 | (($char >> 6) & 0x3F))
- . chr(0x80 | ($char & 0x3F));
-
- case (0xFFFF & $bytes) == $bytes:
- // return a 3-byte UTF-8 character
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0xE0 | (($bytes >> 12) & 0x0F))
- . chr(0x80 | (($bytes >> 6) & 0x3F))
- . chr(0x80 | ($bytes & 0x3F));
- }
-
- // ignoring UTF-32 for now, sorry
- return '';
- }
-
- /**
- * convert a string from one UTF-8 char to one UTF-16 char
- *
- * Normally should be handled by mb_convert_encoding, but
- * provides a slower PHP-only method for installations
- * that lack the multibye string extension.
- *
- * @param string $utf8 UTF-8 character
- * @return string UTF-16 character
- * @access private
- */
- function utf82utf16($utf8)
- {
- // oh please oh please oh please oh please oh please
- if(function_exists('mb_convert_encoding')) {
- return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
- }
-
- switch(strlen($utf8)) {
- case 1:
- // this case should never be reached, because we are in ASCII range
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return $utf8;
-
- case 2:
- // return a UTF-16 character from a 2-byte UTF-8 char
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr(0x07 & (ord($utf8{0}) >> 2))
- . chr((0xC0 & (ord($utf8{0}) << 6))
- | (0x3F & ord($utf8{1})));
-
- case 3:
- // return a UTF-16 character from a 3-byte UTF-8 char
- // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- return chr((0xF0 & (ord($utf8{0}) << 4))
- | (0x0F & (ord($utf8{1}) >> 2)))
- . chr((0xC0 & (ord($utf8{1}) << 6))
- | (0x7F & ord($utf8{2})));
-
- case 4:
- // return a UTF-16 surrogate pair from a 4-byte UTF-8 char
- if(ord($utf8{0}) > 0xF4) return ''; # invalid
- $char = ((0x1C0000 & (ord($utf8{0}) << 18))
- | (0x03F000 & (ord($utf8{1}) << 12))
- | (0x000FC0 & (ord($utf8{2}) << 6))
- | (0x00003F & ord($utf8{3})));
- if($char > 0x10FFFF) return ''; # invalid
- $char -= 0x10000;
- return chr(0xD8 | (($char >> 18) & 0x03))
- . chr(($char >> 10) & 0xFF)
- . chr(0xDC | (($char >> 8) & 0x03))
- . chr($char & 0xFF);
- }
-
- // ignoring UTF-32 for now, sorry
- return '';
- }
-
- /**
- * encodes an arbitrary variable into JSON format
- *
- * @param mixed $var any number, boolean, string, array, or object to be encoded.
- * see argument 1 to Services_JSON() above for array-parsing behavior.
- * if var is a strng, note that encode() always expects it
- * to be in ASCII or UTF-8 format!
- * @param bool $pretty pretty-print output with indents and newlines
- *
- * @return mixed JSON string representation of input var or an error if a problem occurs
- * @access public
- */
- function encode($var, $pretty=false)
- {
- $this->indent = 0;
- $this->pretty = $pretty;
- $this->nameValSeparator = $pretty ? ': ' : ':';
- return $this->encode2($var);
- }
-
- /**
- * encodes an arbitrary variable into JSON format
- *
- * @param mixed $var any number, boolean, string, array, or object to be encoded.
- * see argument 1 to Services_JSON() above for array-parsing behavior.
- * if var is a strng, note that encode() always expects it
- * to be in ASCII or UTF-8 format!
- *
- * @return mixed JSON string representation of input var or an error if a problem occurs
- * @access private
- */
- function encode2($var)
- {
- if ($this->pretty) {
- $close = "\n" . str_repeat("\t", $this->indent);
- $open = $close . "\t";
- $mid = ',' . $open;
- }
- else {
- $open = $close = '';
- $mid = ',';
- }
-
- switch (gettype($var)) {
- case 'boolean':
- return $var ? 'true' : 'false';
-
- case 'NULL':
- return 'null';
-
- case 'integer':
- return (int) $var;
-
- case 'double':
- case 'float':
- return (float) $var;
-
- case 'string':
- // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
- $ascii = '';
- $strlen_var = strlen($var);
-
- /*
- * Iterate over every character in the string,
- * escaping with a slash or encoding to UTF-8 where necessary
- */
- for ($c = 0; $c < $strlen_var; ++$c) {
-
- $ord_var_c = ord($var{$c});
-
- switch (true) {
- case $ord_var_c == 0x08:
- $ascii .= '\b';
- break;
- case $ord_var_c == 0x09:
- $ascii .= '\t';
- break;
- case $ord_var_c == 0x0A:
- $ascii .= '\n';
- break;
- case $ord_var_c == 0x0C:
- $ascii .= '\f';
- break;
- case $ord_var_c == 0x0D:
- $ascii .= '\r';
- break;
-
- case $ord_var_c == 0x22:
- case $ord_var_c == 0x2F:
- case $ord_var_c == 0x5C:
- // double quote, slash, slosh
- $ascii .= '\\'.$var{$c};
- break;
-
- case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
- // characters U-00000000 - U-0000007F (same as ASCII)
- $ascii .= $var{$c};
- break;
-
- case (($ord_var_c & 0xE0) == 0xC0):
- // characters U-00000080 - U-000007FF, mask 110XXXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
- $c += 1;
- $utf16 = $this->utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
-
- case (($ord_var_c & 0xF0) == 0xE0):
- // characters U-00000800 - U-0000FFFF, mask 1110XXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $char = pack('C*', $ord_var_c,
- ord($var{$c + 1}),
- ord($var{$c + 2}));
- $c += 2;
- $utf16 = $this->utf82utf16($char);
- $ascii .= sprintf('\u%04s', bin2hex($utf16));
- break;
-
- case (($ord_var_c & 0xF8) == 0xF0):
- // characters U-00010000 - U-001FFFFF, mask 11110XXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- // These will always return a surrogate pair
- $char = pack('C*', $ord_var_c,
- ord($var{$c + 1}),
- ord($var{$c + 2}),
- ord($var{$c + 3}));
- $c += 3;
- $utf16 = $this->utf82utf16($char);
- if($utf16 == '') {
- $ascii .= '\ufffd';
- } else {
- $utf16 = str_split($utf16, 2);
- $ascii .= sprintf('\u%04s\u%04s', bin2hex($utf16[0]), bin2hex($utf16[1]));
- }
- break;
- }
- }
-
- return '"'.$ascii.'"';
-
- case 'array':
- /*
- * As per JSON spec if any array key is not an integer
- * we must treat the the whole array as an object. We
- * also try to catch a sparsely populated associative
- * array with numeric keys here because some JS engines
- * will create an array with empty indexes up to
- * max_index which can cause memory issues and because
- * the keys, which may be relevant, will be remapped
- * otherwise.
- *
- * As per the ECMA and JSON specification an object may
- * have any string as a property. Unfortunately due to
- * a hole in the ECMA specification if the key is a
- * ECMA reserved word or starts with a digit the
- * parameter is only accessible using ECMAScript's
- * bracket notation.
- */
-
- // treat as a JSON object
- if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
- $this->indent++;
- $properties = array_map(array($this, 'name_value'),
- array_keys($var),
- array_values($var));
- $this->indent--;
-
- foreach($properties as $property) {
- if(Services_JSON::isError($property)) {
- return $property;
- }
- }
-
- return '{' . $open . join($mid, $properties) . $close . '}';
- }
-
- // treat it like a regular array
- $this->indent++;
- $elements = array_map(array($this, 'encode2'), $var);
- $this->indent--;
-
- foreach($elements as $element) {
- if(Services_JSON::isError($element)) {
- return $element;
- }
- }
-
- return '[' . $open . join($mid, $elements) . $close . ']';
-
- case 'object':
- $vars = get_object_vars($var);
-
- $this->indent++;
- $properties = array_map(array($this, 'name_value'),
- array_keys($vars),
- array_values($vars));
- $this->indent--;
-
- foreach($properties as $property) {
- if(Services_JSON::isError($property)) {
- return $property;
- }
- }
-
- return '{' . $open . join($mid, $properties) . $close . '}';
-
- default:
- return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
- ? 'null'
- : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
- }
- }
-
- /**
- * array-walking function for use in generating JSON-formatted name-value pairs
- *
- * @param string $name name of key to use
- * @param mixed $value reference to an array element to be encoded
- *
- * @return string JSON-formatted name-value pair, like '"name":value'
- * @access private
- */
- function name_value($name, $value)
- {
- $encoded_value = $this->encode2($value);
-
- if(Services_JSON::isError($encoded_value)) {
- return $encoded_value;
- }
-
- return $this->encode2(strval($name)) . $this->nameValSeparator . $encoded_value;
- }
-
- /**
- * reduce a string by removing leading and trailing comments and whitespace
- *
- * @param $str string string value to strip of comments and whitespace
- *
- * @return string string value stripped of comments and whitespace
- * @access private
- */
- function reduce_string($str)
- {
- $str = preg_replace(array(
-
- // eliminate single line comments in '// ...' form
- '#^\s*//(.+)$#m',
-
- // eliminate multi-line comments in '/* ... */' form, at start of string
- '#^\s*/\*(.+)\*/#Us',
-
- // eliminate multi-line comments in '/* ... */' form, at end of string
- '#/\*(.+)\*/\s*$#Us'
-
- ), '', $str);
-
- // eliminate extraneous space
- return trim($str);
- }
-
- /**
- * decodes a JSON string into appropriate variable
- *
- * @param string $str JSON-formatted string
- *
- * @return mixed number, boolean, string, array, or object
- * corresponding to given JSON input string.
- * See argument 1 to Services_JSON() above for object-output behavior.
- * Note that decode() always returns strings
- * in ASCII or UTF-8 format!
- * @access public
- */
- function decode($str)
- {
- $str = $this->reduce_string($str);
-
- switch (strtolower($str)) {
- case 'true':
- return true;
-
- case 'false':
- return false;
-
- case 'null':
- return null;
-
- default:
- $m = array();
-
- if (is_numeric($str)) {
- // Lookie-loo, it's a number
-
- // This would work on its own, but I'm trying to be
- // good about returning integers where appropriate:
- // return (float)$str;
-
- // Return float or int, as appropriate
- return ((float)$str == (integer)$str)
- ? (integer)$str
- : (float)$str;
-
- } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
- // STRINGS RETURNED IN UTF-8 FORMAT
- $delim = substr($str, 0, 1);
- $chrs = substr($str, 1, -1);
- $utf8 = '';
- $strlen_chrs = strlen($chrs);
-
- for ($c = 0; $c < $strlen_chrs; ++$c) {
-
- $substr_chrs_c_2 = substr($chrs, $c, 2);
- $ord_chrs_c = ord($chrs{$c});
-
- switch (true) {
- case $substr_chrs_c_2 == '\b':
- $utf8 .= chr(0x08);
- ++$c;
- break;
- case $substr_chrs_c_2 == '\t':
- $utf8 .= chr(0x09);
- ++$c;
- break;
- case $substr_chrs_c_2 == '\n':
- $utf8 .= chr(0x0A);
- ++$c;
- break;
- case $substr_chrs_c_2 == '\f':
- $utf8 .= chr(0x0C);
- ++$c;
- break;
- case $substr_chrs_c_2 == '\r':
- $utf8 .= chr(0x0D);
- ++$c;
- break;
-
- case $substr_chrs_c_2 == '\\"':
- case $substr_chrs_c_2 == '\\\'':
- case $substr_chrs_c_2 == '\\\\':
- case $substr_chrs_c_2 == '\\/':
- if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
- ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
- $utf8 .= $chrs{++$c};
- }
- break;
-
- case preg_match('/\\\uD[89AB][0-9A-F]{2}\\\uD[C-F][0-9A-F]{2}/i', substr($chrs, $c, 12)):
- // escaped unicode surrogate pair
- $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
- . chr(hexdec(substr($chrs, ($c + 4), 2)))
- . chr(hexdec(substr($chrs, ($c + 8), 2)))
- . chr(hexdec(substr($chrs, ($c + 10), 2)));
- $utf8 .= $this->utf162utf8($utf16);
- $c += 11;
- break;
-
- case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
- // single, escaped unicode character
- $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
- . chr(hexdec(substr($chrs, ($c + 4), 2)));
- $utf8 .= $this->utf162utf8($utf16);
- $c += 5;
- break;
-
- case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
- $utf8 .= $chrs{$c};
- break;
-
- case ($ord_chrs_c & 0xE0) == 0xC0:
- // characters U-00000080 - U-000007FF, mask 110XXXXX
- //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 2);
- ++$c;
- break;
-
- case ($ord_chrs_c & 0xF0) == 0xE0:
- // characters U-00000800 - U-0000FFFF, mask 1110XXXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 3);
- $c += 2;
- break;
-
- case ($ord_chrs_c & 0xF8) == 0xF0:
- // characters U-00010000 - U-001FFFFF, mask 11110XXX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 4);
- $c += 3;
- break;
-
- case ($ord_chrs_c & 0xFC) == 0xF8:
- // characters U-00200000 - U-03FFFFFF, mask 111110XX
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 5);
- $c += 4;
- break;
-
- case ($ord_chrs_c & 0xFE) == 0xFC:
- // characters U-04000000 - U-7FFFFFFF, mask 1111110X
- // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
- $utf8 .= substr($chrs, $c, 6);
- $c += 5;
- break;
-
- }
-
- }
-
- return $utf8;
-
- } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
- // array, or object notation
-
- if ($str{0} == '[') {
- $stk = array(SERVICES_JSON_IN_ARR);
- $arr = array();
- } else {
- if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
- $stk = array(SERVICES_JSON_IN_OBJ);
- $obj = array();
- } else {
- $stk = array(SERVICES_JSON_IN_OBJ);
- $obj = new stdClass();
- }
- }
-
- array_push($stk, array('what' => SERVICES_JSON_SLICE,
- 'where' => 0,
- 'delim' => false));
-
- $chrs = substr($str, 1, -1);
- $chrs = $this->reduce_string($chrs);
-
- if ($chrs == '') {
- if (reset($stk) == SERVICES_JSON_IN_ARR) {
- return $arr;
-
- } else {
- return $obj;
-
- }
- }
-
- //print("\nparsing {$chrs}\n");
-
- $strlen_chrs = strlen($chrs);
-
- for ($c = 0; $c <= $strlen_chrs; ++$c) {
-
- $top = end($stk);
- $substr_chrs_c_2 = substr($chrs, $c, 2);
-
- if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
- // found a comma that is not inside a string, array, etc.,
- // OR we've reached the end of the character list
- $slice = substr($chrs, $top['where'], ($c - $top['where']));
- array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
- //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- if (reset($stk) == SERVICES_JSON_IN_ARR) {
- // we are in an array, so just push an element onto the stack
- array_push($arr, $this->decode($slice));
-
- } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
- // we are in an object, so figure
- // out the property name and set an
- // element in an associative array,
- // for now
- $parts = array();
-
- if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- // "name":value pair
- $key = $this->decode($parts[1]);
- $val = $this->decode($parts[2]);
-
- if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
- $obj[$key] = $val;
- } else {
- $obj->$key = $val;
- }
- } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
- // name:value pair, where name is unquoted
- $key = $parts[1];
- $val = $this->decode($parts[2]);
-
- if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
- $obj[$key] = $val;
- } else {
- $obj->$key = $val;
- }
- }
-
- }
-
- } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
- // found a quote, and we are not inside a string
- array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
- //print("Found start of string at {$c}\n");
-
- } elseif (($chrs{$c} == $top['delim']) &&
- ($top['what'] == SERVICES_JSON_IN_STR) &&
- (($chrs{$c - 1} != '\\') ||
- ($chrs{$c - 1} == '\\' && $chrs{$c - 2} == '\\'))) {
- // found a quote, we're in a string, and it's not escaped
- array_pop($stk);
- //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
-
- } elseif (($chrs{$c} == '[') &&
- in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
- // found a left-bracket, and we are in an array, object, or slice
- array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
- //print("Found start of array at {$c}\n");
-
- } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
- // found a right-bracket, and we're in an array
- array_pop($stk);
- //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- } elseif (($chrs{$c} == '{') &&
- in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
- // found a left-brace, and we are in an array, object, or slice
- array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
- //print("Found start of object at {$c}\n");
-
- } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
- // found a right-brace, and we're in an object
- array_pop($stk);
- //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- } elseif (($substr_chrs_c_2 == '/*') &&
- in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
- // found a comment start, and we are in an array, object, or slice
- array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
- $c++;
- //print("Found start of comment at {$c}\n");
-
- } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
- // found a comment end, and we're in one now
- array_pop($stk);
- $c++;
-
- for ($i = $top['where']; $i <= $c; ++$i)
- $chrs = substr_replace($chrs, ' ', $i, 1);
-
- //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
-
- }
-
- }
-
- if (reset($stk) == SERVICES_JSON_IN_ARR) {
- return $arr;
-
- } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
- return $obj;
-
- }
-
- }
- }
- }
-
- /**
- * @todo Ultimately, this should just call PEAR::isError()
- */
- function isError($data, $code = null)
- {
- if (class_exists('pear')) {
- return PEAR::isError($data, $code);
- } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
- is_subclass_of($data, 'services_json_error'))) {
- return true;
- }
-
- return false;
- }
+ /**
+ * constructs a new JSON instance
+ *
+ * @param int $use object behavior flags; combine with boolean-OR
+ *
+ * possible values:
+ * - SERVICES_JSON_LOOSE_TYPE: loose typing.
+ * "{...}" syntax creates associative arrays
+ * instead of objects in decode().
+ * - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.
+ * Values which can't be encoded (e.g. resources)
+ * appear as NULL instead of throwing errors.
+ * By default, a deeply-nested resource will
+ * bubble up with an error, so all return values
+ * from encode() should be checked with isError()
+ */
+ function Services_JSON($use = 0)
+ {
+ $this->use = $use;
+ }
+
+ /**
+ * convert a string from one UTF-16 char to one UTF-8 char
+ *
+ * Normally should be handled by mb_convert_encoding, but
+ * provides a slower PHP-only method for installations
+ * that lack the multibye string extension.
+ *
+ * @param string $utf16 UTF-16 character
+ * @return string UTF-8 character
+ * @access private
+ */
+ function utf162utf8($utf16)
+ {
+ // oh please oh please oh please oh please oh please
+ if(function_exists('mb_convert_encoding')) {
+ return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
+ }
+
+ $bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
+
+ switch(true) {
+ case ((0x7F & $bytes) == $bytes):
+ // this case should never be reached, because we are in ASCII range
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return chr(0x7F & $bytes);
+
+ case (0x07FF & $bytes) == $bytes:
+ // return a 2-byte UTF-8 character
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return chr(0xC0 | (($bytes >> 6) & 0x1F))
+ . chr(0x80 | ($bytes & 0x3F));
+
+ case (0xFC00 & $bytes) == 0xD800 && strlen($utf16) >= 4 && (0xFC & ord($utf16{2})) == 0xDC:
+ // return a 4-byte UTF-8 character
+ $char = ((($bytes & 0x03FF) << 10)
+ | ((ord($utf16{2}) & 0x03) << 8)
+ | ord($utf16{3}));
+ $char += 0x10000;
+ return chr(0xF0 | (($char >> 18) & 0x07))
+ . chr(0x80 | (($char >> 12) & 0x3F))
+ . chr(0x80 | (($char >> 6) & 0x3F))
+ . chr(0x80 | ($char & 0x3F));
+
+ case (0xFFFF & $bytes) == $bytes:
+ // return a 3-byte UTF-8 character
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return chr(0xE0 | (($bytes >> 12) & 0x0F))
+ . chr(0x80 | (($bytes >> 6) & 0x3F))
+ . chr(0x80 | ($bytes & 0x3F));
+ }
+
+ // ignoring UTF-32 for now, sorry
+ return '';
+ }
+
+ /**
+ * convert a string from one UTF-8 char to one UTF-16 char
+ *
+ * Normally should be handled by mb_convert_encoding, but
+ * provides a slower PHP-only method for installations
+ * that lack the multibye string extension.
+ *
+ * @param string $utf8 UTF-8 character
+ * @return string UTF-16 character
+ * @access private
+ */
+ function utf82utf16($utf8)
+ {
+ // oh please oh please oh please oh please oh please
+ if(function_exists('mb_convert_encoding')) {
+ return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
+ }
+
+ switch(strlen($utf8)) {
+ case 1:
+ // this case should never be reached, because we are in ASCII range
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return $utf8;
+
+ case 2:
+ // return a UTF-16 character from a 2-byte UTF-8 char
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return chr(0x07 & (ord($utf8{0}) >> 2))
+ . chr((0xC0 & (ord($utf8{0}) << 6))
+ | (0x3F & ord($utf8{1})));
+
+ case 3:
+ // return a UTF-16 character from a 3-byte UTF-8 char
+ // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ return chr((0xF0 & (ord($utf8{0}) << 4))
+ | (0x0F & (ord($utf8{1}) >> 2)))
+ . chr((0xC0 & (ord($utf8{1}) << 6))
+ | (0x7F & ord($utf8{2})));
+
+ case 4:
+ // return a UTF-16 surrogate pair from a 4-byte UTF-8 char
+ if(ord($utf8{0}) > 0xF4) return ''; # invalid
+ $char = ((0x1C0000 & (ord($utf8{0}) << 18))
+ | (0x03F000 & (ord($utf8{1}) << 12))
+ | (0x000FC0 & (ord($utf8{2}) << 6))
+ | (0x00003F & ord($utf8{3})));
+ if($char > 0x10FFFF) return ''; # invalid
+ $char -= 0x10000;
+ return chr(0xD8 | (($char >> 18) & 0x03))
+ . chr(($char >> 10) & 0xFF)
+ . chr(0xDC | (($char >> 8) & 0x03))
+ . chr($char & 0xFF);
+ }
+
+ // ignoring UTF-32 for now, sorry
+ return '';
+ }
+
+ /**
+ * encodes an arbitrary variable into JSON format
+ *
+ * @param mixed $var any number, boolean, string, array, or object to be encoded.
+ * see argument 1 to Services_JSON() above for array-parsing behavior.
+ * if var is a strng, note that encode() always expects it
+ * to be in ASCII or UTF-8 format!
+ * @param bool $pretty pretty-print output with indents and newlines
+ *
+ * @return mixed JSON string representation of input var or an error if a problem occurs
+ * @access public
+ */
+ function encode($var, $pretty=false)
+ {
+ $this->indent = 0;
+ $this->pretty = $pretty;
+ $this->nameValSeparator = $pretty ? ': ' : ':';
+ return $this->encode2($var);
+ }
+
+ /**
+ * encodes an arbitrary variable into JSON format
+ *
+ * @param mixed $var any number, boolean, string, array, or object to be encoded.
+ * see argument 1 to Services_JSON() above for array-parsing behavior.
+ * if var is a strng, note that encode() always expects it
+ * to be in ASCII or UTF-8 format!
+ *
+ * @return mixed JSON string representation of input var or an error if a problem occurs
+ * @access private
+ */
+ function encode2($var)
+ {
+ if ($this->pretty) {
+ $close = "\n" . str_repeat("\t", $this->indent);
+ $open = $close . "\t";
+ $mid = ',' . $open;
+ }
+ else {
+ $open = $close = '';
+ $mid = ',';
+ }
+
+ switch (gettype($var)) {
+ case 'boolean':
+ return $var ? 'true' : 'false';
+
+ case 'NULL':
+ return 'null';
+
+ case 'integer':
+ return (int) $var;
+
+ case 'double':
+ case 'float':
+ return (float) $var;
+
+ case 'string':
+ // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
+ $ascii = '';
+ $strlen_var = strlen($var);
+
+ /*
+ * Iterate over every character in the string,
+ * escaping with a slash or encoding to UTF-8 where necessary
+ */
+ for ($c = 0; $c < $strlen_var; ++$c) {
+
+ $ord_var_c = ord($var{$c});
+
+ switch (true) {
+ case $ord_var_c == 0x08:
+ $ascii .= '\b';
+ break;
+ case $ord_var_c == 0x09:
+ $ascii .= '\t';
+ break;
+ case $ord_var_c == 0x0A:
+ $ascii .= '\n';
+ break;
+ case $ord_var_c == 0x0C:
+ $ascii .= '\f';
+ break;
+ case $ord_var_c == 0x0D:
+ $ascii .= '\r';
+ break;
+
+ case $ord_var_c == 0x22:
+ case $ord_var_c == 0x2F:
+ case $ord_var_c == 0x5C:
+ // double quote, slash, slosh
+ $ascii .= '\\'.$var{$c};
+ break;
+
+ case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
+ // characters U-00000000 - U-0000007F (same as ASCII)
+ $ascii .= $var{$c};
+ break;
+
+ case (($ord_var_c & 0xE0) == 0xC0):
+ // characters U-00000080 - U-000007FF, mask 110XXXXX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
+ $c += 1;
+ $utf16 = $this->utf82utf16($char);
+ $ascii .= sprintf('\u%04s', bin2hex($utf16));
+ break;
+
+ case (($ord_var_c & 0xF0) == 0xE0):
+ // characters U-00000800 - U-0000FFFF, mask 1110XXXX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $char = pack('C*', $ord_var_c,
+ ord($var{$c + 1}),
+ ord($var{$c + 2}));
+ $c += 2;
+ $utf16 = $this->utf82utf16($char);
+ $ascii .= sprintf('\u%04s', bin2hex($utf16));
+ break;
+
+ case (($ord_var_c & 0xF8) == 0xF0):
+ // characters U-00010000 - U-001FFFFF, mask 11110XXX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ // These will always return a surrogate pair
+ $char = pack('C*', $ord_var_c,
+ ord($var{$c + 1}),
+ ord($var{$c + 2}),
+ ord($var{$c + 3}));
+ $c += 3;
+ $utf16 = $this->utf82utf16($char);
+ if($utf16 == '') {
+ $ascii .= '\ufffd';
+ } else {
+ $utf16 = str_split($utf16, 2);
+ $ascii .= sprintf('\u%04s\u%04s', bin2hex($utf16[0]), bin2hex($utf16[1]));
+ }
+ break;
+ }
+ }
+
+ return '"'.$ascii.'"';
+
+ case 'array':
+ /*
+ * As per JSON spec if any array key is not an integer
+ * we must treat the the whole array as an object. We
+ * also try to catch a sparsely populated associative
+ * array with numeric keys here because some JS engines
+ * will create an array with empty indexes up to
+ * max_index which can cause memory issues and because
+ * the keys, which may be relevant, will be remapped
+ * otherwise.
+ *
+ * As per the ECMA and JSON specification an object may
+ * have any string as a property. Unfortunately due to
+ * a hole in the ECMA specification if the key is a
+ * ECMA reserved word or starts with a digit the
+ * parameter is only accessible using ECMAScript's
+ * bracket notation.
+ */
+
+ // treat as a JSON object
+ if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
+ $this->indent++;
+ $properties = array_map(array($this, 'name_value'),
+ array_keys($var),
+ array_values($var));
+ $this->indent--;
+
+ foreach($properties as $property) {
+ if(Services_JSON::isError($property)) {
+ return $property;
+ }
+ }
+
+ return '{' . $open . join($mid, $properties) . $close . '}';
+ }
+
+ // treat it like a regular array
+ $this->indent++;
+ $elements = array_map(array($this, 'encode2'), $var);
+ $this->indent--;
+
+ foreach($elements as $element) {
+ if(Services_JSON::isError($element)) {
+ return $element;
+ }
+ }
+
+ return '[' . $open . join($mid, $elements) . $close . ']';
+
+ case 'object':
+ $vars = get_object_vars($var);
+
+ $this->indent++;
+ $properties = array_map(array($this, 'name_value'),
+ array_keys($vars),
+ array_values($vars));
+ $this->indent--;
+
+ foreach($properties as $property) {
+ if(Services_JSON::isError($property)) {
+ return $property;
+ }
+ }
+
+ return '{' . $open . join($mid, $properties) . $close . '}';
+
+ default:
+ return ($this->use & SERVICES_JSON_SUPPRESS_ERRORS)
+ ? 'null'
+ : new Services_JSON_Error(gettype($var)." can not be encoded as JSON string");
+ }
+ }
+
+ /**
+ * array-walking function for use in generating JSON-formatted name-value pairs
+ *
+ * @param string $name name of key to use
+ * @param mixed $value reference to an array element to be encoded
+ *
+ * @return string JSON-formatted name-value pair, like '"name":value'
+ * @access private
+ */
+ function name_value($name, $value)
+ {
+ $encoded_value = $this->encode2($value);
+
+ if(Services_JSON::isError($encoded_value)) {
+ return $encoded_value;
+ }
+
+ return $this->encode2(strval($name)) . $this->nameValSeparator . $encoded_value;
+ }
+
+ /**
+ * reduce a string by removing leading and trailing comments and whitespace
+ *
+ * @param $str string string value to strip of comments and whitespace
+ *
+ * @return string string value stripped of comments and whitespace
+ * @access private
+ */
+ function reduce_string($str)
+ {
+ $str = preg_replace(array(
+
+ // eliminate single line comments in '// ...' form
+ '#^\s*//(.+)$#m',
+
+ // eliminate multi-line comments in '/* ... */' form, at start of string
+ '#^\s*/\*(.+)\*/#Us',
+
+ // eliminate multi-line comments in '/* ... */' form, at end of string
+ '#/\*(.+)\*/\s*$#Us'
+
+ ), '', $str);
+
+ // eliminate extraneous space
+ return trim($str);
+ }
+
+ /**
+ * decodes a JSON string into appropriate variable
+ *
+ * @param string $str JSON-formatted string
+ *
+ * @return mixed number, boolean, string, array, or object
+ * corresponding to given JSON input string.
+ * See argument 1 to Services_JSON() above for object-output behavior.
+ * Note that decode() always returns strings
+ * in ASCII or UTF-8 format!
+ * @access public
+ */
+ function decode($str)
+ {
+ $str = $this->reduce_string($str);
+
+ switch (strtolower($str)) {
+ case 'true':
+ return true;
+
+ case 'false':
+ return false;
+
+ case 'null':
+ return null;
+
+ default:
+ $m = array();
+
+ if (is_numeric($str)) {
+ // Lookie-loo, it's a number
+
+ // This would work on its own, but I'm trying to be
+ // good about returning integers where appropriate:
+ // return (float)$str;
+
+ // Return float or int, as appropriate
+ return ((float)$str == (integer)$str)
+ ? (integer)$str
+ : (float)$str;
+
+ } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
+ // STRINGS RETURNED IN UTF-8 FORMAT
+ $delim = substr($str, 0, 1);
+ $chrs = substr($str, 1, -1);
+ $utf8 = '';
+ $strlen_chrs = strlen($chrs);
+
+ for ($c = 0; $c < $strlen_chrs; ++$c) {
+
+ $substr_chrs_c_2 = substr($chrs, $c, 2);
+ $ord_chrs_c = ord($chrs{$c});
+
+ switch (true) {
+ case $substr_chrs_c_2 == '\b':
+ $utf8 .= chr(0x08);
+ ++$c;
+ break;
+ case $substr_chrs_c_2 == '\t':
+ $utf8 .= chr(0x09);
+ ++$c;
+ break;
+ case $substr_chrs_c_2 == '\n':
+ $utf8 .= chr(0x0A);
+ ++$c;
+ break;
+ case $substr_chrs_c_2 == '\f':
+ $utf8 .= chr(0x0C);
+ ++$c;
+ break;
+ case $substr_chrs_c_2 == '\r':
+ $utf8 .= chr(0x0D);
+ ++$c;
+ break;
+
+ case $substr_chrs_c_2 == '\\"':
+ case $substr_chrs_c_2 == '\\\'':
+ case $substr_chrs_c_2 == '\\\\':
+ case $substr_chrs_c_2 == '\\/':
+ if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
+ ($delim == "'" && $substr_chrs_c_2 != '\\"')) {
+ $utf8 .= $chrs{++$c};
+ }
+ break;
+
+ case preg_match('/\\\uD[89AB][0-9A-F]{2}\\\uD[C-F][0-9A-F]{2}/i', substr($chrs, $c, 12)):
+ // escaped unicode surrogate pair
+ $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
+ . chr(hexdec(substr($chrs, ($c + 4), 2)))
+ . chr(hexdec(substr($chrs, ($c + 8), 2)))
+ . chr(hexdec(substr($chrs, ($c + 10), 2)));
+ $utf8 .= $this->utf162utf8($utf16);
+ $c += 11;
+ break;
+
+ case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
+ // single, escaped unicode character
+ $utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
+ . chr(hexdec(substr($chrs, ($c + 4), 2)));
+ $utf8 .= $this->utf162utf8($utf16);
+ $c += 5;
+ break;
+
+ case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
+ $utf8 .= $chrs{$c};
+ break;
+
+ case ($ord_chrs_c & 0xE0) == 0xC0:
+ // characters U-00000080 - U-000007FF, mask 110XXXXX
+ //see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $utf8 .= substr($chrs, $c, 2);
+ ++$c;
+ break;
+
+ case ($ord_chrs_c & 0xF0) == 0xE0:
+ // characters U-00000800 - U-0000FFFF, mask 1110XXXX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $utf8 .= substr($chrs, $c, 3);
+ $c += 2;
+ break;
+
+ case ($ord_chrs_c & 0xF8) == 0xF0:
+ // characters U-00010000 - U-001FFFFF, mask 11110XXX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $utf8 .= substr($chrs, $c, 4);
+ $c += 3;
+ break;
+
+ case ($ord_chrs_c & 0xFC) == 0xF8:
+ // characters U-00200000 - U-03FFFFFF, mask 111110XX
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $utf8 .= substr($chrs, $c, 5);
+ $c += 4;
+ break;
+
+ case ($ord_chrs_c & 0xFE) == 0xFC:
+ // characters U-04000000 - U-7FFFFFFF, mask 1111110X
+ // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+ $utf8 .= substr($chrs, $c, 6);
+ $c += 5;
+ break;
+
+ }
+
+ }
+
+ return $utf8;
+
+ } elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
+ // array, or object notation
+
+ if ($str{0} == '[') {
+ $stk = array(SERVICES_JSON_IN_ARR);
+ $arr = array();
+ } else {
+ if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
+ $stk = array(SERVICES_JSON_IN_OBJ);
+ $obj = array();
+ } else {
+ $stk = array(SERVICES_JSON_IN_OBJ);
+ $obj = new stdClass();
+ }
+ }
+
+ array_push($stk, array( 'what' => SERVICES_JSON_SLICE,
+ 'where' => 0,
+ 'delim' => false));
+
+ $chrs = substr($str, 1, -1);
+ $chrs = $this->reduce_string($chrs);
+
+ if ($chrs == '') {
+ if (reset($stk) == SERVICES_JSON_IN_ARR) {
+ return $arr;
+
+ } else {
+ return $obj;
+
+ }
+ }
+
+ //print("\nparsing {$chrs}\n");
+
+ $strlen_chrs = strlen($chrs);
+
+ for ($c = 0; $c <= $strlen_chrs; ++$c) {
+
+ $top = end($stk);
+ $substr_chrs_c_2 = substr($chrs, $c, 2);
+
+ if (($c == $strlen_chrs) || (($chrs{$c} == ',') && ($top['what'] == SERVICES_JSON_SLICE))) {
+ // found a comma that is not inside a string, array, etc.,
+ // OR we've reached the end of the character list
+ $slice = substr($chrs, $top['where'], ($c - $top['where']));
+ array_push($stk, array('what' => SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
+ //print("Found split at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
+
+ if (reset($stk) == SERVICES_JSON_IN_ARR) {
+ // we are in an array, so just push an element onto the stack
+ array_push($arr, $this->decode($slice));
+
+ } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
+ // we are in an object, so figure
+ // out the property name and set an
+ // element in an associative array,
+ // for now
+ $parts = array();
+
+ if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
+ // "name":value pair
+ $key = $this->decode($parts[1]);
+ $val = $this->decode($parts[2]);
+
+ if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
+ $obj[$key] = $val;
+ } else {
+ $obj->$key = $val;
+ }
+ } elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
+ // name:value pair, where name is unquoted
+ $key = $parts[1];
+ $val = $this->decode($parts[2]);
+
+ if ($this->use & SERVICES_JSON_LOOSE_TYPE) {
+ $obj[$key] = $val;
+ } else {
+ $obj->$key = $val;
+ }
+ }
+
+ }
+
+ } elseif ((($chrs{$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != SERVICES_JSON_IN_STR)) {
+ // found a quote, and we are not inside a string
+ array_push($stk, array('what' => SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
+ //print("Found start of string at {$c}\n");
+
+ } elseif (($chrs{$c} == $top['delim']) &&
+ ($top['what'] == SERVICES_JSON_IN_STR) &&
+ (($chrs{$c - 1} != '\\') ||
+ ($chrs{$c - 1} == '\\' && $chrs{$c - 2} == '\\'))) {
+ // found a quote, we're in a string, and it's not escaped
+ array_pop($stk);
+ //print("Found end of string at {$c}: ".substr($chrs, $top['where'], (1 + 1 + $c - $top['where']))."\n");
+
+ } elseif (($chrs{$c} == '[') &&
+ in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
+ // found a left-bracket, and we are in an array, object, or slice
+ array_push($stk, array('what' => SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
+ //print("Found start of array at {$c}\n");
+
+ } elseif (($chrs{$c} == ']') && ($top['what'] == SERVICES_JSON_IN_ARR)) {
+ // found a right-bracket, and we're in an array
+ array_pop($stk);
+ //print("Found end of array at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
+
+ } elseif (($chrs{$c} == '{') &&
+ in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
+ // found a left-brace, and we are in an array, object, or slice
+ array_push($stk, array('what' => SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
+ //print("Found start of object at {$c}\n");
+
+ } elseif (($chrs{$c} == '}') && ($top['what'] == SERVICES_JSON_IN_OBJ)) {
+ // found a right-brace, and we're in an object
+ array_pop($stk);
+ //print("Found end of object at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
+
+ } elseif (($substr_chrs_c_2 == '/*') &&
+ in_array($top['what'], array(SERVICES_JSON_SLICE, SERVICES_JSON_IN_ARR, SERVICES_JSON_IN_OBJ))) {
+ // found a comment start, and we are in an array, object, or slice
+ array_push($stk, array('what' => SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
+ $c++;
+ //print("Found start of comment at {$c}\n");
+
+ } elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == SERVICES_JSON_IN_CMT)) {
+ // found a comment end, and we're in one now
+ array_pop($stk);
+ $c++;
+
+ for ($i = $top['where']; $i <= $c; ++$i)
+ $chrs = substr_replace($chrs, ' ', $i, 1);
+
+ //print("Found end of comment at {$c}: ".substr($chrs, $top['where'], (1 + $c - $top['where']))."\n");
+
+ }
+
+ }
+
+ if (reset($stk) == SERVICES_JSON_IN_ARR) {
+ return $arr;
+
+ } elseif (reset($stk) == SERVICES_JSON_IN_OBJ) {
+ return $obj;
+
+ }
+
+ }
+ }
+ }
+
+ /**
+ * @todo Ultimately, this should just call PEAR::isError()
+ */
+ function isError($data, $code = null)
+ {
+ if (class_exists('pear')) {
+ return PEAR::isError($data, $code);
+ } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
+ is_subclass_of($data, 'services_json_error'))) {
+ return true;
+ }
+
+ return false;
+ }
}
/// @cond
if (class_exists('PEAR_Error')) {
- /**
- * @ingroup API
- */
- class Services_JSON_Error extends PEAR_Error
- {
- function Services_JSON_Error($message = 'unknown error', $code = null,
- $mode = null, $options = null, $userinfo = null)
- {
- parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
- }
- }
+ /**
+ * @ingroup API
+ */
+ class Services_JSON_Error extends PEAR_Error
+ {
+ function Services_JSON_Error($message = 'unknown error', $code = null,
+ $mode = null, $options = null, $userinfo = null)
+ {
+ parent::PEAR_Error($message, $code, $mode, $options, $userinfo);
+ }
+ }
} else {
/// @endcond
- /**
- * @todo Ultimately, this class shall be descended from PEAR_Error
- * @ingroup API
- */
- class Services_JSON_Error
- {
- function Services_JSON_Error($message = 'unknown error', $code = null,
- $mode = null, $options = null, $userinfo = null)
- {
-
- }
- }
+ /**
+ * @todo Ultimately, this class shall be descended from PEAR_Error
+ * @ingroup API
+ */
+ class Services_JSON_Error
+ {
+ function Services_JSON_Error($message = 'unknown error', $code = null,
+ $mode = null, $options = null, $userinfo = null)
+ {
+
+ }
+ }
}
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