422eba8048
* gptel-curl.el (gptel-curl--stream-cleanup): `gptel-post-response-hook' should run in the buffer that was current when the request was sent. This was not the case for the curl method (with response streaming). Fixed.
308 lines
14 KiB
EmacsLisp
308 lines
14 KiB
EmacsLisp
;;; gptel-curl.el --- Curl support for GPTel -*- lexical-binding: t; -*-
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;; Copyright (C) 2023 Karthik Chikmagalur
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;; Author: Karthik Chikmagalur;; <karthikchikmagalur@gmail.com>
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;; Keywords: convenience
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;; SPDX-License-Identifier: GPL-3.0-or-later
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Curl support for GPTel. Utility functions.
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;;; Code:
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(require 'gptel)
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(eval-when-compile
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(require 'subr-x))
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(require 'map)
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(require 'json)
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(defvar gptel-curl--process-alist nil
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"Alist of active GPTel curl requests.")
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(defun gptel-curl--get-args (prompts token)
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"Produce list of arguments for calling Curl.
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PROMPTS is the data to send, TOKEN is a unique identifier."
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(let* ((args
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(list "--location" "--silent" "--compressed" "--disable"))
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(url "https://api.openai.com/v1/chat/completions")
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(data (encode-coding-string
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(json-encode (gptel--request-data prompts))
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'utf-8))
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(headers
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`(("Content-Type" . "application/json")
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("Authorization" . ,(concat "Bearer " (gptel--api-key))))))
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(push (format "-X%s" "POST") args)
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(push (format "-w(%s . %%{size_header})" token) args)
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;; (push (format "--keepalive-time %s" 240) args)
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(push (format "-m%s" 60) args)
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(push "-D-" args)
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(pcase-dolist (`(,key . ,val) headers)
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(push (format "-H%s: %s" key val) args))
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(push (format "-d%s" data) args)
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(nreverse (cons url args))))
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;;TODO: The :transformer argument here is an alternate implementation of
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;;`gptel-response-filter-functions'. The two need to be unified.
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;;;###autoload
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(defun gptel-curl-get-response (info &optional callback)
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"Retrieve response to prompt in INFO.
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INFO is a plist with the following keys:
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- :prompt (the prompt being sent)
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- :buffer (the gptel buffer)
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- :position (marker at which to insert the response).
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Call CALLBACK with the response and INFO afterwards. If omitted
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the response is inserted into the current buffer after point."
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(let* ((token (md5 (format "%s%s%s%s"
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(random) (emacs-pid) (user-full-name)
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(recent-keys))))
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(args (gptel-curl--get-args (plist-get info :prompt) token))
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(process (apply #'start-process "gptel-curl"
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(generate-new-buffer "*gptel-curl*") "curl" args)))
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(with-current-buffer (process-buffer process)
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(set-process-query-on-exit-flag process nil)
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(setf (alist-get process gptel-curl--process-alist)
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(nconc (list :token token
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:callback (or callback
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(if gptel-stream
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#'gptel-curl--stream-insert-response
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#'gptel--insert-response))
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:transformer (when (or (eq gptel-default-mode 'org-mode)
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(eq (buffer-local-value
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'major-mode
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(plist-get info :buffer))
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'org-mode))
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(gptel--stream-convert-markdown->org)))
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info))
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(if gptel-stream
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(progn (set-process-sentinel process #'gptel-curl--stream-cleanup)
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(set-process-filter process #'gptel-curl--stream-filter))
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(set-process-sentinel process #'gptel-curl--sentinel)))))
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;; TODO: Separate user-messaging from this function
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(defun gptel-curl--stream-cleanup (process status)
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"Process sentinel for GPTel curl requests.
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PROCESS and STATUS are process parameters."
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(let ((proc-buf (process-buffer process)))
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(when gptel--debug
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(with-current-buffer proc-buf
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(clone-buffer "*gptel-error*" 'show)))
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(let* ((info (alist-get process gptel-curl--process-alist))
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(gptel-buffer (plist-get info :buffer))
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(tracking-marker (plist-get info :tracking-marker))
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(start-marker (plist-get info :position))
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(http-status (plist-get info :http-status))
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(http-msg (plist-get info :status)))
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(if (equal http-status "200")
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(progn
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;; Finish handling response
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(with-current-buffer (marker-buffer start-marker)
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(pulse-momentary-highlight-region (+ start-marker 2) tracking-marker)
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(when gptel-mode (save-excursion (goto-char tracking-marker)
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(insert "\n\n" (gptel-prompt-string)))))
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(with-current-buffer gptel-buffer
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(when gptel-mode (gptel--update-header-line " Ready" 'success))))
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;; Or Capture error message
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(with-current-buffer proc-buf
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(goto-char (point-max))
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(search-backward (plist-get info :token))
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(backward-char)
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(pcase-let* ((`(,_ . ,header-size) (read (current-buffer)))
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(json-object-type 'plist)
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(response (progn (goto-char header-size)
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(condition-case nil (json-read)
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(json-readtable-error 'json-read-error)))))
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(cond
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((plist-get response :error)
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(let* ((error-plist (plist-get response :error))
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(error-msg (plist-get error-plist :message))
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(error-type (plist-get error-plist :type)))
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(message "ChatGPT error: (%s) %s" http-msg error-msg)
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(setq http-msg (concat "(" http-msg ") " (string-trim error-type)))))
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((eq response 'json-read-error)
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(message "ChatGPT error (%s): Malformed JSON in response." http-msg))
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(t (message "ChatGPT error (%s): Could not parse HTTP response." http-msg)))))
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(with-current-buffer gptel-buffer
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(when gptel-mode
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(gptel--update-header-line
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(format " Response Error: %s" http-msg) 'error))))
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(with-current-buffer gptel-buffer
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(run-hooks 'gptel-post-response-hook)))
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(setf (alist-get process gptel-curl--process-alist nil 'remove) nil)
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(kill-buffer proc-buf)))
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(defun gptel-curl--stream-insert-response (response info)
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"Insert streaming RESPONSE from ChatGPT into the gptel buffer.
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INFO is a mutable plist containing information relevant to this buffer.
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See `gptel--url-get-response' for details."
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(let ((status-str (plist-get response :status))
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(start-marker (plist-get info :position))
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(tracking-marker (plist-get info :tracking-marker))
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(transformer (plist-get info :transformer)))
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(when response
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(with-current-buffer (marker-buffer start-marker)
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(save-excursion
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(unless tracking-marker
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(gptel--update-header-line " Typing..." 'success)
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(goto-char start-marker)
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(unless (or (bobp) (plist-get info :in-place))
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(insert "\n\n"))
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(setq tracking-marker (set-marker (make-marker) (point)))
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(set-marker-insertion-type tracking-marker t)
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(plist-put info :tracking-marker tracking-marker))
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(when transformer
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(setq response (funcall transformer response)))
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(put-text-property 0 (length response) 'gptel 'response response)
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(goto-char tracking-marker)
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(insert response))))))
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(defun gptel-curl--stream-filter (process output)
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(let* ((content-strs)
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(proc-info (alist-get process gptel-curl--process-alist)))
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(with-current-buffer (process-buffer process)
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;; Insert output
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(save-excursion
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(goto-char (process-mark process))
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(insert output)
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(set-marker (process-mark process) (point)))
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;; Find HTTP status
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(unless (plist-get proc-info :http-status)
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(save-excursion
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(goto-char (point-min))
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(when-let* (((not (= (line-end-position) (point-max))))
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(http-msg (buffer-substring (line-beginning-position)
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(line-end-position)))
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(http-status
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(save-match-data
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(and (string-match "HTTP/[.0-9]+ +\\([0-9]+\\)" http-msg)
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(match-string 1 http-msg)))))
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(plist-put proc-info :http-status http-status)
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(plist-put proc-info :status (string-trim http-msg))))
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;; Handle read-only gptel buffer
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(when (with-current-buffer (plist-get proc-info :buffer)
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(or buffer-read-only
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(get-char-property (plist-get proc-info :position) 'read-only)))
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(message "Buffer is read only, displaying reply in buffer \"*ChatGPT response*\"")
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(display-buffer
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(with-current-buffer (get-buffer-create "*ChatGPT response*")
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(goto-char (point-max))
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(move-marker (plist-get proc-info :position) (point) (current-buffer))
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(current-buffer))
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'((display-buffer-reuse-window
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display-buffer-pop-up-window)
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(reusable-frames . visible)))))
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(when-let ((http-msg (plist-get proc-info :status))
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(http-status (plist-get proc-info :http-status)))
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;; Find data chunk(s) and run callback
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(when (equal http-status "200")
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(funcall (or (plist-get proc-info :callback)
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#'gptel-curl--stream-insert-response)
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(let* ((json-object-type 'plist)
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(response) (content-str))
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(condition-case nil
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(while (re-search-forward "^data:" nil t)
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(save-match-data
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(unless (looking-at " *\\[DONE\\]")
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(when-let* ((response (json-read))
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(delta (map-nested-elt
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response '(:choices 0 :delta)))
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(content (plist-get delta :content)))
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(push content content-strs)))))
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(error
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(goto-char (match-beginning 0))))
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(apply #'concat (nreverse content-strs)))
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proc-info))))))
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(defun gptel-curl--sentinel (process status)
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"Process sentinel for GPTel curl requests.
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PROCESS and STATUS are process parameters."
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(let ((proc-buf (process-buffer process)))
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(when gptel--debug
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(with-current-buffer proc-buf
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(clone-buffer "*gptel-error*" 'show)))
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(when-let* (((eq (process-status process) 'exit))
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(proc-info (alist-get process gptel-curl--process-alist))
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(proc-token (plist-get proc-info :token))
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(proc-callback (plist-get proc-info :callback)))
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(pcase-let ((`(,response ,http-msg ,error)
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(gptel-curl--parse-response proc-buf proc-token)))
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(plist-put proc-info :status http-msg)
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(when error (plist-put proc-info :error error))
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(funcall proc-callback response proc-info)))
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(setf (alist-get process gptel-curl--process-alist nil 'remove) nil)
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(kill-buffer proc-buf)))
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(defun gptel-curl--parse-response (buf token)
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"Parse the buffer BUF with curl's response.
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TOKEN is used to disambiguate multiple requests in a single
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buffer."
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(with-current-buffer buf
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(progn
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(goto-char (point-max))
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(search-backward token)
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(backward-char)
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(pcase-let* ((`(,_ . ,header-size) (read (current-buffer))))
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;; (if (search-backward token nil t)
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;; (search-forward ")" nil t)
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;; (goto-char (point-min)))
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(goto-char (point-min))
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(if-let* ((http-msg (string-trim
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(buffer-substring (line-beginning-position)
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(line-end-position))))
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(http-status
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(save-match-data
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(and (string-match "HTTP/[.0-9]+ +\\([0-9]+\\)" http-msg)
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(match-string 1 http-msg))))
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(json-object-type 'plist)
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(response (progn (goto-char header-size)
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(condition-case nil
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(json-read)
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(json-readtable-error 'json-read-error)))))
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(cond
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((equal http-status "200")
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(list (string-trim
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(map-nested-elt response '(:choices 0 :message :content)))
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http-msg))
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((plist-get response :error)
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(let* ((error-plist (plist-get response :error))
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(error-msg (plist-get error-plist :message))
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(error-type (plist-get error-plist :type)))
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(list nil (concat "(" http-msg ") " (string-trim error-type)) error-msg)))
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((eq response 'json-read-error)
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(list nil (concat "(" http-msg ") Malformed JSON in response.")
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"Malformed JSON in response"))
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(t (list nil (concat "(" http-msg ") Could not parse HTTP response.")
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"Could not parse HTTP response.")))
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(list nil (concat "(" http-msg ") Could not parse HTTP response.")
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"Could not parse HTTP response."))))))
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(provide 'gptel-curl)
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;;; gptel-curl.el ends here
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