让sublime可以和visual studio一样自动在运算符前后添加空格的插件

用过vs的人都知道,vs会自动在代码中运算符的前后加空格,比如 i=1; 换行后会自动变成i = 1;
开始觉得这个挺烦的,后来习惯了,发现这个功能还是挺好的,然代码更清晰.
最近换了sublimetext3,也想有类似功能,找了好久,没有发现很满意的,于是就自己动手了
代码很简单
使用方法(仅限于sublimetext3, 2的话没试过):
在sublimetext3根目录的Data/Packages目录下见一个叫InsertSpace的目录
InsertSpace目录下建一个文件InsertSpace.py, 把InsertSpace的代码复制下来在粘贴到这个文件
然后复制键绑定的代码,粘贴到键绑定文件中
OK
注意:这个键绑定只在c,c++,py,cs文件中起作用,我是用来写c的,所以只做了c运算符
要在其他文件中起作用,修改键绑定代码中:
{ “key”: “selector”, ……
行,加入相应的文件scope名即可,其他代码文件运算符可能不一样,要做相应修改

insertSpace.py

import sublime, sublime_plugin
req_single_op_all = '(([+-*/%=<>|&^?]|(<<)|(>>))(=)|(!=))|((?<=[w ])((<<)|(>>)|(&&)|(||)|[+-*/%=<>|&^?])(?=[w ]))'
#这个正则表达式匹配:
#+ - * / % = < > | & ^ ? << >> && || != += -= *= /= %= &= ^= |= <<= >>= 
reg_tri_op = '?[w ]*:'
#三目运算符?:,需要特殊处理,因为':'号在switc case语句中前后不需要加空格
reg_comma = '(,|;)(?=[w])'
#','';'运算符,需要特殊处理,因为一般','';'前面不加空格,而后面加空格
char_to_ins = ' '

class OpUnit:
    subplg = None
    subedit = None
    def __init__(self, regex, ins_func):
        self.regex = regex
        self.ins_func = ins_func

    #对于一般的运算符,前后都要加空格    
    @staticmethod
    def singleOpInsert(begin, end):
        view = OpUnit.subplg.view
        edit = OpUnit.subedit
        if view.substr(begin - 1) != char_to_ins:  
            view.insert(edit, begin, char_to_ins)
            if view.substr(end + 1) != char_to_ins: 
                view.insert(edit, end + 1, char_to_ins)
        elif view.substr(end) != char_to_ins:  
            view.insert(edit, end, char_to_ins)

    #对于三目运算符,?号前后不加空格(因为已经在匹配普通运算符时加了空格),':'号前后才加空格
    @staticmethod
    def triOpInsert(begin, end):  
        view = OpUnit.subplg.view
        edit = OpUnit.subedit
        if view.substr(end - 2) != char_to_ins:     
            view.insert(edit, end - 1, char_to_ins)
            if view.substr(end + 1) != char_to_ins:
                view.insert(edit, end + 1, char_to_ins)
        elif view.substr(end) != char_to_ins:
            view.insert(edit, end, char_to_ins)

    #对于','';'运算符,只在后面加空格
    @staticmethod
    def commaOpInsert(begin, end):  
        view = OpUnit.subplg.view
        edit = OpUnit.subedit
        if view.substr(end) != char_to_ins:
            view.insert(edit, end, char_to_ins)

op_units = (OpUnit(req_single_op_all, OpUnit.singleOpInsert), 
            OpUnit(reg_tri_op, OpUnit.triOpInsert), 
            OpUnit(reg_comma, OpUnit.commaOpInsert))

class InsertSpaceCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        cur_region = self.view.sel()[0] 
        (cur_row,cur_col) = self.view.rowcol(cur_region.end()) #获得当前光标所在位置的行列
        OpUnit.subplg = self
        OpUnit.subedit = edit
        for op in op_units: 
            regex = op.regex
            op_func = op.ins_func
            #find函数会找到start_pos后第一个匹配正则表达式的region,
            start_pos = self.view.text_point(cur_row , 0)  
            matched_region = self.view.find(regex, start_pos)
            (row, col) = self.view.rowcol(matched_region.end())
            while row == cur_row: #如果匹配到的文本已经不再当前行,则不再匹配
                begin = matched_region.begin()
                end = matched_region.end()
                if begin < 0 or end < 0:
                    break;
                op_func(begin,end) 
                start_pos = end + 1
                matched_region = self.view.find(regex, start_pos)
                (row, col) = self.view.rowcol(matched_region.end())
        self.view.run_command("insert", {"characters": "
"}) 


#最后需要插入一个换行符, 因为这是与enter键绑定的,它覆盖了默认的一个enter键绑定,所以要手动插入换行

按键绑定

{ "keys": ["enter"], "command": "insert_space", "context": 
    [
        { "key": "selection_empty", "operator": "equal", "operand": true, "match_all": true },
        { "key": "following_text", "operator": "not_regex_contains", "operand": "^\}", "match_all": true },
        { "key": "selector", "operator": "equal", "operand": "(source.c, source.c++, source.python, source.cs)", "match_all": true },
        { "key": "panel_has_focus", "operator": "not_equal", "operand": true},
        { "key": "auto_complete_visible", "operator": "equal", "operand": false},
    ]
},

转自https://www.oschina.net/code/snippet_1016548_56822