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1 | ;;; cedet-global.el --- GNU Global support for CEDET. |
2 | ||
3 | ;; Copyright (C) 2008, 2009 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Eric M. Ludlam <eric@siege-engine.com> | |
6 | ||
7 | ;; This file is part of GNU Emacs. | |
8 | ||
9 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
11 | ;; the Free Software Foundation, either version 3 of the License, or | |
12 | ;; (at your option) any later version. | |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
21 | ||
22 | ;;; Commentary: | |
23 | ;; | |
24 | ;; Basic support for calling GNU Global, and testing version numbers. | |
25 | ||
26 | (declare-function inversion-check-version "inversion") | |
27 | ||
28 | (defvar cedet-global-min-version "5.0" | |
29 | "Minimum version of GNU global required.") | |
30 | ||
31 | (defcustom cedet-global-command "global" | |
32 | "Command name for the GNU Global executable." | |
33 | :type 'string | |
34 | :group 'cedet) | |
35 | ||
36 | ;;; Code: | |
37 | (defun cedet-gnu-global-search (searchtext texttype type scope) | |
38 | "Perform a search with GNU Global, return the created buffer. | |
39 | SEARCHTEXT is text to find. | |
40 | TEXTTYPE is the type of text, such as 'regexp, 'string, 'tagname, | |
41 | 'tagregexp, or 'tagcompletions. | |
42 | TYPE is the type of search, meaning that SEARCHTEXT is compared to | |
43 | filename, tagname (tags table), references (uses of a tag) , or | |
44 | symbol (uses of something not in the tag table.) | |
45 | SCOPE is the scope of the search, such as 'project or 'subdirs." | |
46 | (let ((flgs (cond ((eq type 'file) | |
47 | "-a") | |
48 | (t "-xa"))) | |
49 | (scopeflgs (cond | |
50 | ((eq scope 'project) | |
51 | "" | |
52 | ) | |
53 | ((eq scope 'target) | |
54 | "l"))) | |
55 | (stflag (cond ((or (eq texttype 'tagname) | |
56 | (eq texttype 'tagregexp)) | |
57 | "") | |
58 | ((eq texttype 'tagcompletions) | |
59 | "c") | |
60 | ((eq texttype 'regexp) | |
61 | "g") | |
62 | (t "r")))) | |
63 | (cedet-gnu-global-call (list (concat flgs scopeflgs stflag) | |
64 | searchtext)))) | |
65 | ||
66 | (defun cedet-gnu-global-call (flags) | |
67 | "Call GNU Global with the list of FLAGS." | |
68 | (let ((b (get-buffer-create "*CEDET Global*")) | |
69 | (cd default-directory)) | |
0816d744 | 70 | (with-current-buffer b |
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71 | (setq default-directory cd) |
72 | (erase-buffer)) | |
73 | (apply 'call-process cedet-global-command | |
74 | nil b nil | |
75 | flags) | |
76 | b)) | |
77 | ||
78 | (defun cedet-gnu-global-expand-filename (filename) | |
79 | "Expand the FILENAME with GNU Global. | |
80 | Return a fully qualified filename." | |
81 | (interactive "sFile: ") | |
0816d744 | 82 | (let ((ans (with-current-buffer (cedet-gnu-global-call (list "-Pa" filename)) |
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83 | (goto-char (point-min)) |
84 | (if (looking-at "global: ") | |
85 | (error "GNU Global not available") | |
86 | (split-string (buffer-string) "\n" t))))) | |
2054a44c | 87 | (when (called-interactively-p 'interactive) |
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88 | (if ans |
89 | (if (= (length ans) 1) | |
90 | (message "%s" (car ans)) | |
91 | (message "%s + %d others" (car ans) | |
92 | (length (cdr ans)))) | |
93 | (error "No file found"))) | |
94 | ans)) | |
95 | ||
96 | (defun cedet-gnu-global-show-root () | |
97 | "Show the root of a GNU Global area under the current buffer." | |
98 | (interactive) | |
99 | (message "%s" (cedet-gnu-global-root))) | |
100 | ||
101 | (defun cedet-gnu-global-root (&optional dir) | |
102 | "Return the root of any GNU Global scanned project. | |
103 | If a default starting DIR is not specified, the current buffer's | |
104 | `default-directory' is used." | |
105 | (let ((default-directory (or dir default-directory))) | |
0816d744 | 106 | (with-current-buffer (cedet-gnu-global-call (list "-pq")) |
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107 | (goto-char (point-min)) |
108 | (when (not (eobp)) | |
109 | (file-name-as-directory | |
110 | (buffer-substring (point) (point-at-eol))))))) | |
111 | ||
112 | (defun cedet-gnu-global-version-check (&optional noerror) | |
113 | "Check the version of the installed GNU Global command. | |
114 | If optional programatic argument NOERROR is non-nil, then | |
115 | instead of throwing an error if Global isn't available, then | |
116 | return nil." | |
117 | (interactive) | |
118 | (require 'inversion) | |
119 | (let ((b (condition-case nil | |
120 | (cedet-gnu-global-call (list "--version")) | |
121 | (error nil))) | |
122 | (rev nil)) | |
123 | (if (not b) | |
124 | (progn | |
2054a44c | 125 | (when (called-interactively-p 'interactive) |
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126 | (message "GNU Global not found.")) |
127 | nil) | |
0816d744 | 128 | (with-current-buffer b |
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129 | (goto-char (point-min)) |
130 | (re-search-forward "GNU GLOBAL \\([0-9.]+\\)" nil t) | |
131 | (setq rev (match-string 1)) | |
132 | (if (inversion-check-version rev nil cedet-global-min-version) | |
133 | (if noerror | |
134 | nil | |
135 | (error "Version of GNU Global is %s. Need at least %s" | |
136 | rev cedet-global-min-version)) | |
137 | ;; Else, return TRUE, as in good enough. | |
2054a44c | 138 | (when (called-interactively-p 'interactive) |
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139 | (message "GNU Global %s - Good enough for CEDET." rev)) |
140 | t))))) | |
141 | ||
142 | (defun cedet-gnu-global-scan-hits (buffer) | |
143 | "Scan all the hits from the GNU Global output BUFFER." | |
144 | (let ((hits nil) | |
145 | (r1 "^\\([^ ]+\\) +\\([0-9]+\\) \\([^ ]+\\) ")) | |
0816d744 | 146 | (with-current-buffer buffer |
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147 | (goto-char (point-min)) |
148 | (while (re-search-forward r1 nil t) | |
149 | (setq hits (cons (cons (string-to-number (match-string 2)) | |
150 | (match-string 3)) | |
151 | hits))) | |
152 | ;; Return the results | |
153 | (nreverse hits)))) | |
154 | ||
155 | (provide 'cedet-global) | |
156 | ||
3999968a | 157 | ;; arch-tag: 0d0d3ac2-91ef-4820-bb2b-1d59ccf38392 |
666fd2cc | 158 | ;;; cedet-global.el ends here |