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Copy pathDefaultCommentParser.cs
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544 lines (515 loc) · 23 KB
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using Microsoft.Extensions.Primitives;
namespace NpgsqlRest.Defaults;
internal static class DefaultCommentParser
{
private static readonly char[] newlineSeparator = ['\r', '\n'];
private static readonly char[] wordSeparators = [' ', ','];
private static readonly char[] headerSeparator = [':'];
private const string HttpKey = "http";
private static readonly string[] paramTypeKey = [
"requestparamtype",
"paramtype",
"request_param_type",
"param_type",
"request-param-type",
"param-type"
];
private static readonly string[] queryKey = [
"querystring",
"query_string",
"query-string",
"query"
];
private static readonly string[] jsonKey = [
"bodyjson",
"body_json",
"body-json",
"json",
"body"
];
private static readonly string[] authorizeKey = [
"requiresauthorization",
"authorize",
"requires_authorization",
"requires-authorization"
];
private static readonly string[] allowAnonymousKey = [
"allowanonymous",
"allow_anonymous",
"allow-anonymous",
"anonymous",
"anon"
];
private static readonly string[] timeoutKey = [
"commandtimeout",
"command_timeout",
"command-timeout",
"timeout"
];
private const string ContentTypeKey = "content-type";
private static readonly string[] requestHeadersModeKey = [
"requestheadersmode",
"request_headers_mode",
"request-headers-mode",
"requestheaders",
"request_headers",
"request-headers"
];
private const string IgnoreKey = "ignore";
private const string ContextKey = "context";
private const string ParameterKey = "parameter";
private static readonly string[] requestHeadersParameterNameKey = [
"requestheadersparametername",
"requestheadersparamname",
"request_headers_parameter_name",
"request_headers_param_name",
"request-headers-parameter-name",
"request-headers-param-name",
];
private static readonly string[] bodyParameterNameKey = [
"bodyparametername",
"body-parameter-name",
"body_parameter_name",
"bodyparamname",
"body-param-name",
"body_param_name"
];
private static readonly string[] tagsKey = ["for", "tags", "tag"];
private const string DisabledKey = "disabled";
private const string EnabledKey = "enabled";
private static readonly string[] textResponseNullHandlingKey = [
"responsenullhandling",
"response_null_handling",
"response-null-handling",
];
private const string EmptyStringKey = "emptystring";
private const string NullLiteral = "nullliteral";
private const string NoContentKey = "nocontent";
private static readonly string[] queryStringNullHandlingKey = [
"querystringnullhandling",
"query-string-null-handling",
"query_string_null_handling",
];
public static RoutineEndpoint? Parse(ref Routine routine, ref NpgsqlRestOptions options, ref ILogger? logger, ref RoutineEndpoint routineEndpoint)
{
if (options.CommentsMode == CommentsMode.Ignore)
{
return routineEndpoint;
}
var originalUrl = routineEndpoint.Url;
var originalMethod = routineEndpoint.Method;
var originalParamType = routineEndpoint.RequestParamType;
var comment = routine.Comment;
var disabled = false;
bool haveTag = true;
if (string.IsNullOrEmpty(comment))
{
if (options.CommentsMode == CommentsMode.OnlyWithHttpTag)
{
return null;
}
}
else
{
string[] lines = comment.Split(newlineSeparator, StringSplitOptions.RemoveEmptyEntries);
bool hasHttpTag = false;
for (var i = 0; i < lines.Length; i++)
{
string line = lines[i].Trim();
string[] words = Split(ref line);
var len = words.Length;
if (len == 0)
{
continue;
}
// for tag1, tag2, tag3 [, ...]
// tag tag1, tag2, tag3 [, ...]
// tags tag1, tag2, tag3 [, ...]
if (routine.Tags is not null && routine.Tags.Length > 0 && StrEqualsToArray(ref words[0], tagsKey))
{
string[] arr = words[1..];
bool found = false;
for (var j = 0; j < routine.Tags.Length; j++)
{
var tag = routine.Tags[j];
if (StrEqualsToArray(ref tag, arr))
{
found = true;
break;
}
}
haveTag = found;
}
// disabled
// disabled tag1, tag2, tag3 [, ...]
else if (haveTag is true && StrEquals(ref words[0], DisabledKey))
{
if (len == 1)
{
disabled = true;
}
else if (routine.Tags is not null && routine.Tags.Length > 0)
{
string[] arr = words[1..];
for (var j = 0; j < routine.Tags.Length; j++)
{
var tag = routine.Tags[j];
if (StrEqualsToArray(ref tag, arr))
{
disabled = true;
break;
}
}
}
}
// enabled
// enabled [ tag1, tag2, tag3 [, ...] ]
else if (haveTag is true && StrEquals(ref words[0], EnabledKey))
{
if (len == 1)
{
disabled = false;
}
else if (routine.Tags is not null && routine.Tags.Length > 0)
{
string[] arr = words[1..];
for (var j = 0; j < routine.Tags.Length; j++)
{
var tag = routine.Tags[j];
if (StrEqualsToArray(ref tag, arr))
{
disabled = false;
break;
}
}
}
}
// HTTP
// HTTP [ GET | POST | PUT | DELETE ]
// HTTP [ GET | POST | PUT | DELETE ] path
else if (haveTag is true && StrEquals(ref words[0], HttpKey))
{
hasHttpTag = true;
if (len == 2 || len == 3)
{
if (Enum.TryParse<Method>(words[1], true, out var parsedMethod))
{
routineEndpoint.Method = parsedMethod;
routineEndpoint.RequestParamType = routineEndpoint.Method == Method.GET ? RequestParamType.QueryString : RequestParamType.BodyJson;
}
else
{
logger?.InvalidHttpMethodComment(words[1], routine.Schema, routine.Name, routineEndpoint.Method);
}
}
if (len == 3)
{
string urlPathSegment = words[2];
if (!Uri.TryCreate(urlPathSegment, UriKind.Relative, out Uri? uri))
{
logger?.InvalidUrlPathSegmentComment(urlPathSegment, routine.Schema, routine.Name, routineEndpoint.Url);
}
else
{
routineEndpoint.Url = uri.ToString();
if (!routineEndpoint.Url.StartsWith('/'))
{
routineEndpoint.Url = string.Concat("/", routineEndpoint.Url);
}
}
}
if (routineEndpoint.Method != originalMethod || !string.Equals(routineEndpoint.Url, originalUrl))
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetHttp(routine.Type, routine.Schema, routine.Name, routineEndpoint.Method, routineEndpoint.Url);
}
}
}
// requestparamtype [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
// paramtype [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
// request_param_type [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
// param_type [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
// request-param-type [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
// param-type [ [ querystring | query_string | query-string | query ] | [ bodyjson | body_json | body-json | json | body ] ]
else if (haveTag is true && len >= 2 && StrEqualsToArray(ref words[0], paramTypeKey))
{
if (StrEqualsToArray(ref words[1], queryKey))
{
routineEndpoint.RequestParamType = RequestParamType.QueryString;
}
else if (StrEqualsToArray(ref words[1], jsonKey))
{
routineEndpoint.RequestParamType = RequestParamType.BodyJson;
}
else
{
logger?.InvalidParameterTypeComment(words[1], routine.Schema, routine.Name, routineEndpoint.RequestParamType);
}
if (originalParamType != routineEndpoint.RequestParamType)
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetParameterType(routine.Type, routine.Schema, routine.Name, routineEndpoint.RequestParamType);
}
}
}
// requiresauthorization
// authorize
// requires_authorization
// requires-authorization
else if (haveTag is true && StrEqualsToArray(ref words[0], authorizeKey))
{
routineEndpoint.RequiresAuthorization = true;
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetAuth(routine.Type, routine.Schema, routine.Name);
}
}
// allowanonymous
// allow_anonymous
// allow-anonymous
// anonymous
// anon
else if (haveTag is true && StrEqualsToArray(ref words[0], allowAnonymousKey))
{
routineEndpoint.RequiresAuthorization = false;
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetAnon(routine.Type, routine.Schema, routine.Name);
}
}
// commandtimeout seconds
// command_timeout seconds
// command-timeout seconds
// timeout seconds
else if (haveTag is true && len >= 2 && StrEqualsToArray(ref words[0], timeoutKey))
{
if (int.TryParse(words[1], out var parsedTimeout))
{
if (routineEndpoint.CommandTimeout != parsedTimeout)
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetTimeout(routine.Type, routine.Schema, routine.Name, words[1]);
}
}
routineEndpoint.CommandTimeout = parsedTimeout;
}
else
{
logger?.InvalidTimeoutComment(words[1], routine.Schema, routine.Name, routineEndpoint.CommandTimeout);
}
}
// requestheadersmode [ ignore | context | parameter ]
// request_headers_mode [ ignore | context | parameter ]
// request-headers-mode [ ignore | context | parameter ]
// requestheaders [ ignore | context | parameter ]
// request_headers [ ignore | context | parameter ]
// request-headers [ ignore | context | parameter ]
else if (haveTag is true && StrEqualsToArray(ref words[0], requestHeadersModeKey))
{
if (StrEquals(ref words[1], IgnoreKey))
{
routineEndpoint.RequestHeadersMode = RequestHeadersMode.Ignore;
}
else if (StrEquals(ref words[1], ContextKey))
{
routineEndpoint.RequestHeadersMode = RequestHeadersMode.Context;
}
else if (StrEquals(ref words[1], ParameterKey))
{
routineEndpoint.RequestHeadersMode = RequestHeadersMode.Parameter;
}
else
{
logger?.InvalidRequestHeadersModeComment(words[1], routine.Schema, routine.Name, routineEndpoint.RequestHeadersMode);
}
if (routineEndpoint.RequestHeadersMode != options.RequestHeadersMode)
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetRequestHeadersMode(routine.Type, routine.Schema, routine.Name, words[1]);
}
}
}
// requestheadersparametername name
// requestheadersparamname name
// request_headers_parameter_name name
// request_headers_param_name name
// request-headers-parameter-name name
// request-headers-param-name name
else if (haveTag is true && StrEqualsToArray(ref words[0], requestHeadersParameterNameKey))
{
if (len == 2)
{
if (!string.Equals(routineEndpoint.RequestHeadersParameterName, words[1]))
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetRequestHeadersParamName(routine.Type, routine.Schema, routine.Name, words[1]);
}
}
routineEndpoint.RequestHeadersParameterName = words[1];
}
}
// bodyparametername name
// body-parameter-name name
// body_parameter_name name
// bodyparamname name
// body-param-name name
// body_param_name name
else if (haveTag is true && StrEqualsToArray(ref words[0], bodyParameterNameKey))
{
if (len == 2)
{
if (!string.Equals(routineEndpoint.BodyParameterName, words[1]))
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetBodyParamName(routine.Type, routine.Schema, routine.Name, words[1]);
}
}
routineEndpoint.BodyParameterName = words[1];
}
}
// responsenullhandling [ emptystring | nullliteral | nocontent ]
// response_null_handling [ emptystring | nullliteral | nocontent ]
// response-null-handling [ emptystring | nullliteral | nocontent ]
else if (haveTag is true && StrEqualsToArray(ref words[0], textResponseNullHandlingKey))
{
if (StrEquals(ref words[1], EmptyStringKey))
{
routineEndpoint.TextResponseNullHandling = TextResponseNullHandling.EmptyString;
}
else if (StrEquals(ref words[1], NullLiteral))
{
routineEndpoint.TextResponseNullHandling = TextResponseNullHandling.NullLiteral;
}
else if (StrEquals(ref words[1], NoContentKey))
{
routineEndpoint.TextResponseNullHandling = TextResponseNullHandling.NoContent;
}
else
{
logger?.InvalidResponseNullHandlingModeComment(words[1], routine.Schema, routine.Name, routineEndpoint.TextResponseNullHandling);
}
if (routineEndpoint.TextResponseNullHandling != options.TextResponseNullHandling)
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetTextResponseNullHandling(routine.Type, routine.Schema, routine.Name, words[1]);
}
}
}
// querystringnullhandling [ emptystring | nullliteral | ignore ]
// query_string_null_handling [ emptystring | nullliteral | ignore ]
// query-string-null-handling [ emptystring | nullliteral | ignore ]
else if (haveTag is true && StrEqualsToArray(ref words[0], queryStringNullHandlingKey))
{
if (StrEquals(ref words[1], EmptyStringKey))
{
routineEndpoint.QueryStringNullHandling = QueryStringNullHandling.EmptyString;
}
else if (StrEquals(ref words[1], NullLiteral))
{
routineEndpoint.QueryStringNullHandling = QueryStringNullHandling.NullLiteral;
}
else if (StrEquals(ref words[1], IgnoreKey))
{
routineEndpoint.QueryStringNullHandling = QueryStringNullHandling.Ignore;
}
else
{
logger?.InvalidQueryStringNullHandlingComment(words[1], routine.Schema, routine.Name, routineEndpoint.QueryStringNullHandling);
}
if (routineEndpoint.TextResponseNullHandling != options.TextResponseNullHandling)
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetQueryStringNullHandling(routine.Type, routine.Schema, routine.Name, routineEndpoint.QueryStringNullHandling);
}
}
}
// key: value
// Content-Type: application/json
else if (haveTag is true && line.Contains(':'))
{
var parts = line.Split(headerSeparator, 2);
if (parts.Length == 2)
{
var headerName = parts[0].Trim();
var headerValue = parts[1].Trim();
if (StrEquals(ref headerName, ContentTypeKey))
{
if (!string.Equals(routineEndpoint.ResponseContentType, headerValue))
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetContentType(routine.Type, routine.Schema, routine.Name, headerValue);
}
}
routineEndpoint.ResponseContentType = headerValue;
}
else
{
if (routineEndpoint.ResponseHeaders is null)
{
routineEndpoint.ResponseHeaders = new()
{
[headerName] = new StringValues(headerValue)
};
}
else
{
if (routineEndpoint.ResponseHeaders.TryGetValue(headerName, out StringValues values))
{
routineEndpoint.ResponseHeaders[headerName] = StringValues.Concat(values, headerValue);
}
else
{
routineEndpoint.ResponseHeaders.Add(headerName, new StringValues(headerValue));
}
}
if (!string.Equals(routineEndpoint.ResponseContentType, headerValue))
{
if (options.LogAnnotationSetInfo)
{
logger?.CommentSetHeader(routine.Type, routine.Schema, routine.Name, headerName, headerValue);
}
}
}
}
}
}
if (disabled)
{
return null;
}
if (options.CommentsMode == CommentsMode.OnlyWithHttpTag && !hasHttpTag)
{
return null;
}
}
return routineEndpoint;
}
private static bool StrEquals(ref string str1, string str2) => str1.Equals(str2, StringComparison.OrdinalIgnoreCase);
private static bool StrEqualsToArray(ref string str, string[] arr)
{
for (var i = 0; i < arr.Length; i++)
{
if (str.Equals(arr[i], StringComparison.OrdinalIgnoreCase))
{
return true;
}
}
return false;
}
private static string[] Split(ref string str)
{
return str
.Split(wordSeparators, StringSplitOptions.RemoveEmptyEntries)
.Select(x => x.Trim())
.ToArray();
}
}
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