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json: Simplify parse_string() 

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180823164025.12553-28-armbru@redhat.com>
master
Markus Armbruster 2018-08-23 18:39:54 +02:00
parent b2da4a4d75
commit de6decfe8e
1 changed files with 19 additions and 23 deletions
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42
qobject/json-parser.c
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@ -101,8 +101,7 @@ static int hex2decimal(char ch)
} else if (ch >= 'A' && ch <= 'F') {
return 10 + (ch - 'A');
}
return -1;
abort();
}
/**
@ -144,7 +143,7 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token)
const char *ptr = token->str;
QString *str;
char quote;
int cp;
int cp, i;
char *end;
ssize_t len;
char utf8_buf[5];
@ -159,51 +158,48 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token)
ptr++;
switch (*ptr++) {
case '"':
qstring_append(str, "\"");
qstring_append_chr(str, '"');
break;
case '\'':
qstring_append(str, "'");
qstring_append_chr(str, '\'');
break;
case '\\':
qstring_append(str, "\\");
qstring_append_chr(str, '\\');
break;
case '/':
qstring_append(str, "/");
qstring_append_chr(str, '/');
break;
case 'b':
qstring_append(str, "\b");
qstring_append_chr(str, '\b');
break;
case 'f':
qstring_append(str, "\f");
qstring_append_chr(str, '\f');
break;
case 'n':
qstring_append(str, "\n");
qstring_append_chr(str, '\n');
break;
case 'r':
qstring_append(str, "\r");
qstring_append_chr(str, '\r');
break;
case 't':
qstring_append(str, "\t");
qstring_append_chr(str, '\t');
break;
case 'u': {
uint16_t unicode_char = 0;
char utf8_char[4];
int i = 0;
case 'u':
cp = 0;
for (i = 0; i < 4; i++) {
if (qemu_isxdigit(*ptr)) {
unicode_char |= hex2decimal(*ptr) << ((3 - i) * 4);
} else {
if (!qemu_isxdigit(*ptr)) {
parse_error(ctxt, token,
"invalid hex escape sequence in string");
goto out;
}
cp <<= 4;
cp |= hex2decimal(*ptr);
ptr++;
}
wchar_to_utf8(unicode_char, utf8_char, sizeof(utf8_char));
qstring_append(str, utf8_char);
} break;
wchar_to_utf8(cp, utf8_buf, sizeof(utf8_buf));
qstring_append(str, utf8_buf);
break;
default:
parse_error(ctxt, token, "invalid escape sequence in string");
goto out;