用括號中的雙引號替換單引號

Question

我必須修改文件json。我必須用雙引號替換單引號，但我不能使用以下命令sed -i -r "s/'/\"/g" file，因爲在文件中有更多單引號不會更改。

以下代碼是串的一個例子：

"categories": [['Clothing, Shoes & Jewelry', 'Girls'], ['Clothing, Shoes & Jewelry', 'Novelty, Costumes & More', 'Costumes & Accessories', 'More Accessories', 'Kids & Baby']] 

的desided結果應該是：

"categories": [["Clothing, Shoes & Jewelry", "Girls"], ["Clothing, Shoes & Jewelry", "Novelty, Costumes & More", "Costumes & Accessories", "More Accessories", "Kids & Baby"]] 

示例文件：

{"categories": [['Movies & TV', 'Movies']], "title": "Understanding Seizures and Epilepsy DVD"}, 
{"title": "Who on Earth is Tom Baker?", "salesRank": {"Books": 3843450}, "categories": [['Books']]}, 
{"categories": [['Clothing, Shoes & Jewelry', 'Girls'], ['Clothing, Shoes & Jewelry', 'Novelty, Costumes & More', 'Costumes & Accessories', 'More Accessories', 'Kids & Baby']], "description": "description, "title": "Mog's Kittens", "salesRank": {"Books": 1760368}}}, 
{"description": "Three Dr. Suess' Puzzles", "brand": "Dr. Seuss", "categories": [['Toys & Games', 'Puzzles', 'Jigsaw Puzzles']]}, 

我使用的正則表達式，但問題是我不知道括號中有多少元素。所以我想用一種方法來替換括號中的所有單引號，這是一種完美的方式，但我找不到解決方案。

Answer 1

我找到了一種方法來使用python。

請注意，由於單引號（還有一些複製/粘貼問題，缺少引號，我修正了這個問題），您提供的json流無法被python json識別。

我的解決方案是完全使用python庫，我懷疑你可以用sed做同樣的事情，這就是爲什麼我提供它，儘管你沒有提到這個技術。

• 我使用ast.literal_eval讀取數據，因爲它是一個精確的Python語法的字典列表。單引號不是問題ast
• 我使用json.dump寫入數據。它使用雙引號寫入數據。
• 請注意，我把它寫在一個「假」文件中（即用I/O寫入方法來「愚弄」json串行器的字符串）。

這裏有一個獨立的片斷，它的工作原理：

import io 

foo = """[{"categories": [['Movies & TV', 'Movies']], "title": "Understanding Seizures and Epilepsy DVD"}, 
{"title": "Who on Earth is Tom Baker?", "salesRank": {"Books": 3843450}, "categories": [['Books']]}, 
{"categories": [['Clothing, Shoes & Jewelry', 'Girls'], ['Clothing, Shoes & Jewelry', 'Novelty, Costumes & More', 'Costumes & Accessories', 'More Accessories', 'Kids & Baby']], "description": "description", "title": "Mog's Kittens", "salesRank": {"Books": 1760368}}, 
{"description": "Three Dr. Suess' Puzzles", 
"brand": "Dr. Seuss", "categories": [['Toys & Games', 'Puzzles', 'Jigsaw Puzzles']]} 
]""" 

fp = io.StringIO() 

json_data=ast.literal_eval(foo) 
json.dump(json_data,fp) 
print(fp.getvalue()) 

結果：

[{"categories": [["Movies & TV", "Movies"]], "title": "Understanding Seizures and Epilepsy DVD"}, {"salesRank": {"Books": 3843450}, "categories": [["Books"]], "title": "Who on Earth is Tom Baker?"}, {"description": "description", "salesRank": {"Books": 1760368}, "categories": [["Clothing, Shoes & Jewelry", "Girls"], ["Clothing, Shoes & Jewelry", "Novelty, Costumes & More", "Costumes & Accessories", "More Accessories", "Kids & Baby"]], "title": "Mog's Kittens"}, {"brand": "Dr. Seuss", "description": "Three Dr. Suess' Puzzles", "categories": [["Toys & Games", "Puzzles", "Jigsaw Puzzles"]]}] 

這裏有一個完整的腳本服用2個參數（輸入文件&輸出文件），並執行轉換。您可以將現有的bash腳本中使用這個腳本，如果你不舒服與Python（保存在fix_quotes.py爲例）：

import ast,json,sys 

input_file = sys.argv[1] 
output_file = sys.argv[2] 

with open(input_file,"r") as fr: 
    json_data=ast.literal_eval(fr.read()) 
with open(output_file,"w") as fw: 
    json.dump(json_data,fw) 

Answer 2

#!/usr/bin/perl -w 
use strict; 

# read each line from stdin 
while (my $l=<>) {  
    chomp($l); # remove newline char 

    # split: get contents of innermost square brackets 
    my @a=split(/(\[[^][]*\])/,$l); 

    foreach my $i (@a) { 
     # replace quotes iff innermost square brackets 
     if ($i=~/^\[/) { $i=~s/'/"/g; } 
    } 

    # join and print 
    print join('',@a)."\n"; 
}