javascript - 带前瞻功能的 array.split

Question

我有以下字符串:

'(POINT (10 5),POINT EMPTY,LINESTRING (5 6, 15 17, 8 9),LINESTRING EMPTY,POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON EMPTY,MULTIPOINT (55 1, 7 6, 90 99, 33 5, 55 1),MULTIPOINT EMPTY,MULTILINESTRING ((5 6, 15 17, 8 9), (5 6, 15 17, 8 9), (5 6, 15 17, 8 9)),MULTILINESTRING EMPTY,MULTIPOLYGON (((55 1, 7 6, 90 99, 33 5, 55 1)),, ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1))),MULTIPOLYGON EMPTY)',

我想将其拆分为一个字符串数组，分隔符应为),[A-Z]。 (所以)，后跟一个大写字母)

但我也不想丢失分隔符。

看完这个问题:JavaScript Split without losing character

我尝试过:

let string = '(POINT (10 5),POINT EMPTY,LINESTRING (5 6, 15 17, 8 9),LINESTRING EMPTY,POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON EMPTY,MULTIPOINT (55 1, 7 6, 90 99, 33 5, 55 1),MULTIPOINT EMPTY,MULTILINESTRING ((5 6, 15 17, 8 9), (5 6, 15 17, 8 9), (5 6, 15 17, 8 9)),MULTILINESTRING EMPTY,MULTIPOLYGON (((55 1, 7 6, 90 99, 33 5, 55 1)),, ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1))),MULTIPOLYGON EMPTY)'
let stringArray = string.split(/(?=\),[A-Z]\)/);

但这不起作用。我究竟做错了什么？是正则表达式吗？

所以期望的输出是:

['(POINT (10 5)',
'POINT EMPTY',
'POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1))',
'MULTIPOINT (55 1, 7 6, 90 99, 33 5, 55 1)',
'MULTIPOINT EMPTY',
...
]

Answer 1

解决该问题的方法之一是使用正向前瞻 ?= 和非捕获组 ?:。

关于RegExp 。

let string = 'GEOMETRYCOLLECTION (POINT (10 5),POINT EMPTY,LINESTRING (5 6, 15 17, 8 9),LINESTRING EMPTY,POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON ((55 1, 7 6, 90 99, 33 5, 55 1)),POLYGON EMPTY,MULTIPOINT (55 1, 7 6, 90 99, 33 5, 55 1),MULTIPOINT EMPTY,MULTILINESTRING ((5 6, 15 17, 8 9), (5 6, 15 17, 8 9), (5 6, 15 17, 8 9)),MULTILINESTRING EMPTY,MULTIPOLYGON (((55 1, 7 6, 90 99, 33 5, 55 1)),, ((55 1, 7 6, 90 99, 33 5, 55 1), (55 1, 7 6, 90 99, 33 5, 55 1))),MULTIPOLYGON EMPTY)'
let stringArray = string.split(/(?:\,)(?=[A-Z])/);

console.log(stringArray);