Basic JSONC SED Parser

basic-jsonc-sed.md

Basic JSONC Parser

Note

it removes

• Comments to end of line
• Single line block comments
• Empty lines

Caution

its NOT covering

• Full spec
• Trailing Commas
• comments in values
• Multi line block comments

TL;DR

s/\/\/.*$//g;s/\/\*.*\*\///g;/^[[:space:]]*$/d

basic-jsonc.sed

:comments-to-endofline
s/\/\/.*$//g

:comment-blocks
s/\/\*.*\*\///g

:empty-lines
/^[[:space:]]*$/d

sed -f basic-jsonc.sed test-file.jsonc

# pipe to jq
sed -f basic-jsonc.sed test-file.jsonc | jq '.'

# replace in place
sed -i -f basic-jsonc.sed test-file.jsonc

Example JSONC

//test-file.jsonc
{
  // hoge
  "foo": "bar", // here
  "no": "comment in values are NOT ok",
  "@umm": "guys is /* block */ fine too?",
  /* are you fine? */
  "hmm": /* even here? */ "comment block in values not ok",
  "test": "yup some good",
  "comment at end of value?": "nope",
  "indent": "hey covered tab and nested?",
  "ind": {
    "hoge": /* just saying */ [
			"x11", /* behind me are tabs! */
      "yup u okk",


      "mixed multiline empty lines above",
      "HOUSTON WE HAVE A PROBLEM",
      "watt?",
      "TRAILING COMMAS",
      "i knw, i'm too lazy, deal with it!",
      "i can avoid them, or write more regex",
      "comments are enough for nw"
    ], // okkk
    "res": "ok"
  }
  // zxzzz
}

inline pattern

sed 's/\/\/.*$//g;s/\/\*.*\*\///g;/^[[:space:]]*$/d' test-file.jsonc | jq

basic-jsonc.sed

:comments-to-endofline
s/\/\/.*$//g

:comment-blocks
s/\/\*.*\*\///g

:empty-lines
/^[[:space:]]*$/d

test-file.jsonc

//test-file.jsonc
{
  // hoge

  "foo": "bar", // here
  "no": "comment in values are NOT ok",
  "@umm": "guys is /* block */ fine too?",
  /* are you fine? */
  "hmm": /* even here? */ "comment block in values not ok",
  "test": "yup some good",
  "comment at end of value?": "nope",
  "indent": "hey covered tab and nested?",
  "ind": {
    "hoge": /* just saying */ [
			"x11", /* behind me are tabs! */
      "yup u okk",


      "mixed multiline empty lines above",
      "HOUSTON WE HAVE A PROBLEM",
      "watt?",
      "TRAILING COMMAS",
      "i knw, i'm too lazy, deal with it!",
      "i can avoid them, or write more regex",
      "comments are enough for nw"
    ], // okkk
    "res": "ok"
  }
  // zxzzz
}