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1 | ;;; ob-sh.el --- org-babel functions for shell evaluation |
2 | ||
b73f1974 | 3 | ;; Copyright (C) 2009-2012 Free Software Foundation, Inc. |
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4 | |
5 | ;; Author: Eric Schulte | |
6 | ;; Keywords: literate programming, reproducible research | |
7 | ;; Homepage: http://orgmode.org | |
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8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation, either version 3 of the License, or | |
14 | ;; (at your option) any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
23 | ||
24 | ;;; Commentary: | |
25 | ||
26 | ;; Org-Babel support for evaluating shell source code. | |
27 | ||
28 | ;;; Code: | |
29 | (require 'ob) | |
3ab2c837 | 30 | (require 'ob-ref) |
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31 | (require 'ob-comint) |
32 | (require 'ob-eval) | |
33 | (require 'shell) | |
34 | (eval-when-compile (require 'cl)) | |
35 | ||
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36 | (declare-function org-babel-comint-in-buffer "ob-comint" (buffer &rest body)) |
37 | (declare-function org-babel-comint-wait-for-output "ob-comint" (buffer)) | |
38 | (declare-function org-babel-comint-buffer-livep "ob-comint" (buffer)) | |
39 | (declare-function org-babel-comint-with-output "ob-comint" (meta &rest body)) | |
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40 | (declare-function orgtbl-to-generic "org-table" (table params)) |
41 | ||
42 | (defvar org-babel-default-header-args:sh '()) | |
43 | ||
44 | (defvar org-babel-sh-command "sh" | |
45 | "Command used to invoke a shell. | |
46 | This will be passed to `shell-command-on-region'") | |
47 | ||
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48 | (defcustom org-babel-sh-var-quote-fmt |
49 | "$(cat <<'BABEL_TABLE'\n%s\nBABEL_TABLE\n)" | |
50 | "Format string used to escape variables when passed to shell scripts." | |
51 | :group 'org-babel | |
52 | :type 'string) | |
53 | ||
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54 | (defun org-babel-execute:sh (body params) |
55 | "Execute a block of Shell commands with Babel. | |
56 | This function is called by `org-babel-execute-src-block'." | |
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57 | (let* ((session (org-babel-sh-initiate-session |
58 | (cdr (assoc :session params)))) | |
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59 | (result-params (cdr (assoc :result-params params))) |
60 | (stdin ((lambda (stdin) (when stdin (org-babel-sh-var-to-string | |
61 | (org-babel-ref-resolve stdin)))) | |
62 | (cdr (assoc :stdin params)))) | |
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63 | (full-body (org-babel-expand-body:generic |
64 | body params (org-babel-variable-assignments:sh params)))) | |
86fbb8ca | 65 | (org-babel-reassemble-table |
3ab2c837 | 66 | (org-babel-sh-evaluate session full-body result-params stdin) |
86fbb8ca | 67 | (org-babel-pick-name |
afe98dfa | 68 | (cdr (assoc :colname-names params)) (cdr (assoc :colnames params))) |
86fbb8ca | 69 | (org-babel-pick-name |
afe98dfa | 70 | (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params)))))) |
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71 | |
72 | (defun org-babel-prep-session:sh (session params) | |
73 | "Prepare SESSION according to the header arguments specified in PARAMS." | |
74 | (let* ((session (org-babel-sh-initiate-session session)) | |
afe98dfa | 75 | (var-lines (org-babel-variable-assignments:sh params))) |
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76 | (org-babel-comint-in-buffer session |
77 | (mapc (lambda (var) | |
78 | (insert var) (comint-send-input nil t) | |
79 | (org-babel-comint-wait-for-output session)) var-lines)) | |
80 | session)) | |
81 | ||
82 | (defun org-babel-load-session:sh (session body params) | |
83 | "Load BODY into SESSION." | |
84 | (save-window-excursion | |
85 | (let ((buffer (org-babel-prep-session:sh session params))) | |
86 | (with-current-buffer buffer | |
87 | (goto-char (process-mark (get-buffer-process (current-buffer)))) | |
88 | (insert (org-babel-chomp body))) | |
89 | buffer))) | |
90 | ||
91 | ;; helper functions | |
92 | ||
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93 | (defun org-babel-variable-assignments:sh (params) |
94 | "Return list of shell statements assigning the block's variables" | |
95 | (let ((sep (cdr (assoc :separator params)))) | |
96 | (mapcar | |
97 | (lambda (pair) | |
98 | (format "%s=%s" | |
99 | (car pair) | |
100 | (org-babel-sh-var-to-sh (cdr pair) sep))) | |
101 | (mapcar #'cdr (org-babel-get-header params :var))))) | |
102 | ||
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103 | (defun org-babel-sh-var-to-sh (var &optional sep) |
104 | "Convert an elisp value to a shell variable. | |
105 | Convert an elisp var into a string of shell commands specifying a | |
106 | var of the same value." | |
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107 | (format org-babel-sh-var-quote-fmt (org-babel-sh-var-to-string var sep))) |
108 | ||
109 | (defun org-babel-sh-var-to-string (var &optional sep) | |
110 | "Convert an elisp value to a string." | |
111 | (flet ((echo-var (v) (if (stringp v) v (format "%S" v)))) | |
112 | (cond | |
113 | ((and (listp var) (listp (car var))) | |
114 | (orgtbl-to-generic var (list :sep (or sep "\t") :fmt #'echo-var))) | |
115 | ((listp var) | |
116 | (mapconcat #'echo-var var "\n")) | |
117 | (t (echo-var var))))) | |
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118 | |
119 | (defun org-babel-sh-table-or-results (results) | |
120 | "Convert RESULTS to an appropriate elisp value. | |
121 | If the results look like a table, then convert them into an | |
122 | Emacs-lisp table, otherwise return the results as a string." | |
acedf35c | 123 | (org-babel-script-escape results)) |
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124 | |
125 | (defun org-babel-sh-initiate-session (&optional session params) | |
126 | "Initiate a session named SESSION according to PARAMS." | |
127 | (when (and session (not (string= session "none"))) | |
128 | (save-window-excursion | |
129 | (or (org-babel-comint-buffer-livep session) | |
130 | (progn (shell session) (get-buffer (current-buffer))))))) | |
131 | ||
132 | (defvar org-babel-sh-eoe-indicator "echo 'org_babel_sh_eoe'" | |
133 | "String to indicate that evaluation has completed.") | |
134 | (defvar org-babel-sh-eoe-output "org_babel_sh_eoe" | |
135 | "String to indicate that evaluation has completed.") | |
136 | ||
3ab2c837 | 137 | (defun org-babel-sh-evaluate (session body &optional result-params stdin) |
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138 | "Pass BODY to the Shell process in BUFFER. |
139 | If RESULT-TYPE equals 'output then return a list of the outputs | |
140 | of the statements in BODY, if RESULT-TYPE equals 'value then | |
141 | return the value of the last statement in BODY." | |
142 | ((lambda (results) | |
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143 | (when results |
144 | (if (or (member "scalar" result-params) | |
3ab2c837 | 145 | (member "verbatim" result-params) |
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146 | (member "output" result-params)) |
147 | results | |
148 | (let ((tmp-file (org-babel-temp-file "sh-"))) | |
149 | (with-temp-file tmp-file (insert results)) | |
150 | (org-babel-import-elisp-from-file tmp-file))))) | |
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151 | (cond |
152 | (stdin ; external shell script w/STDIN | |
153 | (let ((script-file (org-babel-temp-file "sh-script-")) | |
154 | (stdin-file (org-babel-temp-file "sh-stdin-"))) | |
155 | (with-temp-file script-file (insert body)) | |
156 | (with-temp-file stdin-file (insert stdin)) | |
157 | (with-temp-buffer | |
158 | (call-process-shell-command | |
159 | (format "%s %s" org-babel-sh-command script-file) | |
160 | stdin-file | |
161 | (current-buffer)) | |
162 | (buffer-string)))) | |
163 | (session ; session evaluation | |
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164 | (mapconcat |
165 | #'org-babel-sh-strip-weird-long-prompt | |
166 | (mapcar | |
167 | #'org-babel-trim | |
168 | (butlast | |
169 | (org-babel-comint-with-output | |
170 | (session org-babel-sh-eoe-output t body) | |
171 | (mapc | |
172 | (lambda (line) | |
3ab2c837 BG |
173 | (insert line) |
174 | (comint-send-input nil t) | |
175 | (while (save-excursion | |
176 | (goto-char comint-last-input-end) | |
177 | (not (re-search-forward | |
178 | comint-prompt-regexp nil t))) | |
179 | (accept-process-output (get-buffer-process (current-buffer))))) | |
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180 | (append |
181 | (split-string (org-babel-trim body) "\n") | |
182 | (list org-babel-sh-eoe-indicator)))) | |
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183 | 2)) "\n")) |
184 | ('otherwise ; external shell script | |
185 | (org-babel-eval org-babel-sh-command (org-babel-trim body)))))) | |
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186 | |
187 | (defun org-babel-sh-strip-weird-long-prompt (string) | |
188 | "Remove prompt cruft from a string of shell output." | |
189 | (while (string-match "^% +[\r\n$]+ *" string) | |
190 | (setq string (substring string (match-end 0)))) | |
191 | string) | |
192 | ||
193 | (provide 'ob-sh) | |
194 | ||
5b409b39 | 195 | |
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196 | |
197 | ;;; ob-sh.el ends here |