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tag/Handler: convert to class with virtual methods

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This commit is contained in:
Max Kellermann
2018-07-05 19:07:05 +02:00
parent 09d4176210
commit 3d3a1232b1
49 changed files with 414 additions and 496 deletions
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28
src/command/FileCommands.cxx
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@@ -137,25 +137,24 @@ IsValidValue(const char *p) noexcept
return true;
}
static void
print_pair(const char *key, const char *value, void *ctx)
{
auto &r = *(Response *)ctx;
class PrintCommentHandler final : public NullTagHandler {
Response &response;
if (IsValidName(key) && IsValidValue(value))
r.Format("%s: %s\n", key, value);
}
public:
explicit PrintCommentHandler(Response &_response) noexcept
:NullTagHandler(WANT_PAIR), response(_response) {}
static constexpr TagHandler print_comment_handler = {
nullptr,
nullptr,
print_pair,
void OnPair(const char *key, const char *value) noexcept override {
if (IsValidName(key) && IsValidValue(value))
response.Format("%s: %s\n", key, value);
}
};
static CommandResult
read_stream_comments(Response &r, const char *uri)
{
if (!tag_stream_scan(uri, print_comment_handler, &r)) {
PrintCommentHandler h(r);
if (!tag_stream_scan(uri, h)) {
r.Error(ACK_ERROR_NO_EXIST, "Failed to load file");
return CommandResult::ERROR;
}
@@ -167,12 +166,13 @@ read_stream_comments(Response &r, const char *uri)
static CommandResult
read_file_comments(Response &r, const Path path_fs)
{
if (!tag_file_scan(path_fs, print_comment_handler, &r)) {
PrintCommentHandler h(r);
if (!tag_file_scan(path_fs, h)) {
r.Error(ACK_ERROR_NO_EXIST, "Failed to load file");
return CommandResult::ERROR;
}
ScanGenericTags(path_fs, print_comment_handler, &r);
ScanGenericTags(path_fs, h);
return CommandResult::OK;