creof/geo-parser

Parser for geography coordinate strings

2.1.0 2016-05-03 18:19 UTC

README

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Lexer and parser library for geometric and geographic point string values.

Usage

There are two use patterns for the parser. The value to be parsed can be passed into the constructor, then parse() called on the returned Parser object:

$input  = '79°56′55″W, 40°26′46″N';

$parser = new Parser($input);

$value = $parser->parse();

If many values need to be parsed, a single Parser instance can be used:

$input1 = '56.242 E';
$input2 = '40:26:46 S';

$parser = new Parser();

$value1 = $parser->parse($input1);
$value2 = $parser->parse($input2);

Supported Formats

Both single values and pairs are supported. Some samples of supported formats are below, though not every possible iteration may be explicitly specified:

  1. Simple single signed values

    • 40
    • -40
    • -8.543
    • +132
    • +77.2
  2. Simple single signed values with degree symbol

    • 40°
    • -40°
    • -5.234°
    • +43°
    • +38.43°
  3. Single unsigned values with or without degree symbol, and cardinal direction

    • 40° N
    • 40 S
    • 56.242 E
  4. Single values of signed integer degrees with degree symbol, and decimal minutes with apostrophe

    • 40° 26.222'
    • -65° 32.22'
    • +165° 52.22'
  5. Single values of unsigned integer degrees with degree symbol, decimal minutes with apostrophe, and cardinal direction

    • 40° 26.222' E
    • 65° 32.22' S
  6. Single values of signed integer degrees with degree symbol, integer minutes with apostrophe, and optional integer or decimal seconds with quote

    • 40° 26' 46"
    • -79° 58' 56"
    • 93° 19' 25.8"
    • +120° 19' 25.8"
  7. Single values of signed integer degrees with colon symbol, integer minutes, and optional colon and integer or decimal seconds

    • +40:26:46
    • -79:58:56
    • 93:19:25.8
  8. Single values of unsigned integer degrees with degree symbol, integer minutes with apostrophe, optional integer or decimal seconds with quote, and cardinal direction

    • 40° 26' 46" S
    • 99° 58' 56" W
    • 44° 58' 53.9" N
  9. Single values of unsigned integer degrees with colon symbol, integer minutes with, optional colon and integer or decimal seconds, and cardinal direction

    • 40:26:46 S
    • 99:58:56 W
    • 44:58:53.9 N
  10. Two of any one format separated by whitespace

  11. Two of any one format separated by a comma

Return

The parser will return a integer/float or an array containing a pair of these values.

Exceptions

The Lexer and Parser will throw exceptions implementing interface CrEOF\Geo\String\Exception\ExceptionInterface.