Add HAL 9000 API

Author: dspinellis

src/Makefile

@@ -6,7 +6,7 @@ MANPREFIX ?= "$(PREFIX)/share/man/"
 SHAREPREFIX ?= "$(PREFIX)/share/ai-cli"
 
 PROGS=rl_driver $(SHARED_LIB)
-RL_SRC=ai_cli.c config.c ini.c fetch_anthropic.c fetch_openai.c \
+RL_SRC=ai_cli.c config.c ini.c fetch_anthropic.c fetch_hal.c fetch_openai.c \
        fetch_llamacpp.c support.c
 TEST_SRC=$(wildcard *_test.c)
 LIB=-lcurl -ljansson

src/ai_cli.5

@@ -79,7 +79,7 @@ It can be used when Emacs key bindings are in effect.
 .PP
 \fIapi=\fR
 .RS 4
-Specify the API to use: one of anthropic, llamacpp, or openai.
+Specify the API to use: one of anthropic, hal, llamacpp, or openai.
 .RE
 
 .PP

src/ai_cli.c

@@ -30,6 +30,7 @@
 #include "config.h"
 
 #include "fetch_anthropic.h"
+#include "fetch_hal.h"
 #include "fetch_llamacpp.h"
 #include "fetch_openai.h"
 
@@ -140,6 +141,8 @@ setup(void)
 		REQUIRE(anthropic, key);
 		REQUIRE(anthropic, endpoint);
 		REQUIRE(anthropic, version);
+	} else if (strcmp(config.general_api, "hal") == 0) {
+		fetch = fetch_hal;
 	} else if (strcmp(config.general_api, "llamacpp") == 0) {
 		fetch = fetch_llamacpp;
 		REQUIRE(llamacpp, endpoint);

src/fetch_hal.c

@@ -0,0 +1,35 @@
+/*-
+ *
+ *  ai-cli - readline wrapper to obtain a generative AI suggestion
+ *  Dummy HAL 9000 access function, that can be used for testing.
+ *
+ *  Copyright 2024 Diomidis Spinellis
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "config.h"
+#include "fetch_hal.h"
+
+/*
+ * Fetch response from the dummy HAL 9000 API.
+ * See https://en.wikipedia.org/wiki/HAL_9000 and
+ * https://en.wikiquote.org/wiki/2001:_A_Space_Odyssey_(film).
+ * This endpoint can be used for testing the ai-cli-lib functionality
+ * without the need to use a networked API.
+ */
+char *
+fetch_hal(config_t *config, const char *prompt, int history_length)
+{
+	return "# I'm sorry, Dave. I'm afraid I can't do that.";
+}

src/fetch_hal.h

@@ -0,0 +1,23 @@
+/*-
+ *
+ *  ai-cli - readline wrapper to obtain a generative AI suggestion
+ *  Dummy HAL 9000 access function, that can be used for testing.
+ *
+ *  Copyright 2023 Diomidis Spinellis
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "config.h"
+
+char *fetch_hal(config_t *config, const char *prompt, int history_length);