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json: Support %% in JSON strings when interpolating

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The previous commit makes JSON strings containing '%' awkward to
express in templates: you'd have to mask the '%' with an Unicode
escape \u0025.  No template currently contains such JSON strings.
Support the printf conversion specification %% in JSON strings as a
convenience anyway, because it's trivially easy to do.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180823164025.12553-58-armbru@redhat.com>
This commit is contained in:
Markus Armbruster
2018-08-23 18:40:24 +02:00
parent 16a4859921
commit 8bca4613e6
2 changed files with 4 additions and 3 deletions
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3
qobject/json-parser.c
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@ -208,10 +208,11 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token)
}
break;
case '%':
if (ctxt->ap) {
if (ctxt->ap && ptr[1] != '%') {
parse_error(ctxt, token, "can't interpolate into string");
goto out;
}
ptr++;
/* fall through */
default:
cp = mod_utf8_codepoint(ptr, 6, &end);