more lsp

1 files changed, 43 insertions, 15 deletions

diff --git a/lsp.c b/lsp.c
index 1b6d214..4499cfe 100644
--- a/lsp.c
+++ b/lsp.c
@@ -1,5 +1,6 @@
 typedef struct {
 	Process process;
+	char error[256];
 } LSP;
 
 
@@ -11,7 +12,42 @@ static void send_request(LSP *lsp, const char *content) {
 	process_write(&lsp->process, content, content_size);
 }
 
-void lsp_create(LSP *lsp, const char *analyzer_command) {
+static bool recv_response(LSP *lsp, JSON *json) {
+	static char response_data[500000];
+	// i think this should always read all the response data.
+	long long bytes_read = process_read(&lsp->process, response_data, sizeof response_data);
+	if (bytes_read < 0) {
+		strbuf_printf(lsp->error, "Read error.");
+		return false;
+	}
+	response_data[bytes_read] = '\0';
+	
+	char *body_start = strstr(response_data, "\r\n\r\n");
+	if (body_start) {
+		body_start += 4;
+		if (!json_parse(json, body_start)) {
+			strbuf_cpy(lsp->error, json->error);
+			return false;
+		}
+		JSONValue result = json_get(json, "result");
+		if (result.type == JSON_NULL) {
+			// uh oh
+			JSONValue error = json_get(json, "error.message");
+			if (error.type == JSON_STRING) {
+				json_string_get(json, &error.val.string, lsp->error, sizeof lsp->error);
+			} else {
+				strbuf_printf(lsp->error, "Server error (no message)");
+			}
+		}
+	} else {
+		strbuf_printf(lsp->error, "No response body.");
+		return false;
+	}
+	
+	return true;
+}
+
+bool lsp_create(LSP *lsp, const char *analyzer_command) {
 	ProcessSettings settings = {
 		.stdin_blocking = true,
 		.stdout_blocking = true
@@ -25,19 +61,11 @@ void lsp_create(LSP *lsp, const char *analyzer_command) {
 		"}}",
 		process_get_id());
 	send_request(lsp, init_request);
-	// @TODO: recv_response
-	char response_text[4096] = {0};
-	process_read(&lsp->process, response_text, sizeof response_text);
-	char *rnrn = strstr(response_text, "\r\n\r\n");
-	if (!rnrn) {
-		//@TODO delete me
-		printf("no analyzer ):\n");
-		exit(0);
-	}
 	JSON  json = {0};
-	printf("%s\n",rnrn+4);
-	if (!json_parse(&json, rnrn + 4))
-		printf("fail : %s\n",json.error);
-//	json_debug_print(&json);printf("\n");
-	
+	if (!recv_response(lsp, &json)) {
+		return false;
+	}
+	JSONValue response = json_get(&json, "result.capabilities.textDocumentSync.openClose");
+	json_debug_print_value(&json, &response);printf("\n");
+	return true;
 }