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authorMarkus Armbruster <armbru@redhat.com>2018-08-23 18:39:54 +0200
committerMarkus Armbruster <armbru@redhat.com>2018-08-24 20:26:37 +0200
commitde6decfe8e2939464fc27ac2ab4ef87689329fec (patch)
treeff03b19c32b4200b91789fc6bc291cc96f0604c6 /qobject/json-parser.c
parentb2da4a4d7537567b44db60b7b79cd14f64e48f2f (diff)
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>
Diffstat (limited to 'qobject/json-parser.c')
-rw-r--r--qobject/json-parser.c42
1 files changed, 19 insertions, 23 deletions
diff --git a/qobject/json-parser.c b/qobject/json-parser.c
index 7437827c24..9cb363f7e1 100644
--- a/qobject/json-parser.c
+++ b/qobject/json-parser.c
@@ -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;