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1 ;;; abbrev.el --- abbrev mode commands for Emacs
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2
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3 ;; Copyright (C) 1985, 1986, 1992, 1993 Free Software Foundation, Inc.
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4 ;; Keywords: internal, abbrev
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5
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6 ;; This file is part of XEmacs.
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7
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8 ;; XEmacs is free software; you can redistribute it and/or modify it
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9 ;; under the terms of the GNU General Public License as published by
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10 ;; the Free Software Foundation; either version 2, or (at your option)
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11 ;; any later version.
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12
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13 ;; XEmacs is distributed in the hope that it will be useful, but
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14 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 ;; General Public License for more details.
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17
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18 ;; You should have received a copy of the GNU General Public License
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19 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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20 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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21
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22 ;jwz: this is preloaded so don't ;;;###autoload
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23 (defconst only-global-abbrevs nil
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24 "*t means user plans to use global abbrevs only.
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25 Makes the commands to define mode-specific abbrevs define global ones instead."
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26 )
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27
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28 (defvar abbrev-table-name-list '()
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29 "List of symbols whose values are abbrev tables.")
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30
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31 (defvar abbrevs-changed nil
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32 "Set non-nil by defining or altering any word abbrevs.
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33 This causes `save-some-buffers' to offer to save the abbrevs.")
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34
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35 (defun make-abbrev-table ()
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36 "Create a new, empty abbrev table object."
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37 (make-vector 59 0)) ; 59 is prime
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38
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39 (defun clear-abbrev-table (table)
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40 "Undefine all abbrevs in abbrev table TABLE, leaving it empty."
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41 (fillarray table 0)
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42 (setq abbrevs-changed t)
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43 nil)
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44
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45
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46 (defun define-abbrev-table (name defs)
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47 "Define TABNAME (a symbol) as an abbrev table name.
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48 Define abbrevs in it according to DEFINITIONS, which is a list of elements
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49 of the form (ABBREVNAME EXPANSION HOOK USECOUNT)."
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50 (let ((table (and (boundp name) (symbol-value name))))
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51 (cond ((vectorp table))
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52 ((not table)
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53 (setq table (make-abbrev-table))
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54 (set name table)
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55 (setq abbrev-table-name-list (cons name abbrev-table-name-list)))
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56 (t
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57 (setq table (signal 'wrong-type-argument (list 'vectorp table)))
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58 (set name table)))
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59 (while defs
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60 (apply (function define-abbrev) table (car defs))
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61 (setq defs (cdr defs)))))
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62
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63 (defun define-abbrev (table name &optional expansion hook count)
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64 "Define an abbrev in TABLE named NAME, to expand to EXPANSION or call HOOK.
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65 NAME and EXPANSION are strings. Hook is a function or `nil'.
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66 To undefine an abbrev, define with the an expansion of `nil'."
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67 (or (not expansion)
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68 (stringp expansion)
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69 (setq expansion (signal 'wrong-type-argument
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70 (list 'stringp expansion))))
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71 (or (not count)
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72 (integerp count)
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73 (setq count (signal 'wrong-type-argument
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74 (list 'fixnump count))))
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75 (let* ((sym (intern name table))
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76 (oexp (and (boundp sym) (symbol-value sym)))
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77 (ohook (and (fboundp sym) (symbol-function sym))))
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78 (if (not (and (equal ohook hook)
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79 (stringp oexp)
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80 (stringp expansion)
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81 (string-equal oexp expansion)))
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82 (setq abbrevs-changed t))
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83 (set sym expansion)
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84 (fset sym hook)
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85 (setplist sym (or count 0))
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86 name))
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87
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88
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89 ;; Fixup stuff from bootstrap def of define-abbrev-table in subr.el
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90 (let ((l abbrev-table-name-list))
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91 (while l
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92 (let ((fixup (car l)))
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93 (if (consp fixup)
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94 (progn
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95 (setq abbrev-table-name-list (delq fixup abbrev-table-name-list))
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96 (define-abbrev-table (car fixup) (cdr fixup))))
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97 (setq l (cdr l))))
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98 ;; These are no longer initialised by C code
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99 (if (not global-abbrev-table)
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100 (progn
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101 (setq global-abbrev-table (make-abbrev-table))
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102 (setq abbrev-table-name-list (cons 'global-abbrev-table
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103 abbrev-table-name-list))))
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104 (if (not fundamental-mode-abbrev-table)
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105 (progn
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106 (setq fundamental-mode-abbrev-table (make-abbrev-table))
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107 (setq abbrev-table-name-list (cons 'fundamental-mode-abbrev-table
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108 abbrev-table-name-list))))
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109 (and (eq major-mode 'fundamental-mode)
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110 (not local-abbrev-table)
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111 (setq local-abbrev-table fundamental-mode-abbrev-table)))
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112
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113
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114 (defun define-global-abbrev (name expansion)
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115 "Define ABBREV as a global abbreviation for EXPANSION."
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116 (interactive "sDefine global abbrev: \nsExpansion for %s: ")
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117 (define-abbrev global-abbrev-table
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118 (downcase name) expansion nil 0))
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119
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120 (defun define-mode-abbrev (name expansion)
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121 "Define ABBREV as a mode-specific abbreviation for EXPANSION."
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122 (interactive "sDefine mode abbrev: \nsExpansion for %s: ")
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123 (define-abbrev (or local-abbrev-table
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124 (error "Major mode has no abbrev table"))
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125 (downcase name) nil 0))
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126
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127 (defun abbrev-symbol (abbrev &optional table)
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128 "Return the symbol representing abbrev named ABBREV.
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129 This symbol's name is ABBREV, but it is not the canonical symbol of that name;
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130 it is interned in an abbrev-table rather than the normal obarray.
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131 The value is nil if that abbrev is not defined.
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132 Optional second arg TABLE is abbrev table to look it up in.
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133 The default is to try buffer's mode-specific abbrev table, then global table."
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134 (let ((frob (function (lambda (table)
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135 (let ((sym (intern-soft abbrev table)))
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136 (if (and (boundp sym)
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137 (stringp (symbol-value sym)))
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138 sym
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139 nil))))))
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140 (if table
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141 (funcall frob table)
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142 (or (and local-abbrev-table
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143 (funcall frob local-abbrev-table))
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144 (funcall frob global-abbrev-table)))))
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145
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146 (defun abbrev-expansion (abbrev &optional table)
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147 "Return the string that ABBREV expands into in the current buffer.
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148 Optionally specify an abbrev table as second arg;
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149 then ABBREV is looked up in that table only."
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150 (let ((sym (abbrev-symbol abbrev table)))
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151 (if sym
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152 (symbol-value sym)
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153 nil)))
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154
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155 (defun unexpand-abbrev ()
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156 "Undo the expansion of the last abbrev that expanded.
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157 This differs from ordinary undo in that other editing done since then
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158 is not undone."
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159 (interactive)
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160 (if (or (< last-abbrev-location (point-min))
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161 (> last-abbrev-location (point-max))
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162 (not (stringp last-abbrev-text)))
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163 nil
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164 (let* ((opoint (point))
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165 (val (symbol-value last-abbrev))
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166 (adjust (length val)))
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167 ;; This isn't correct if (symbol-function last-abbrev-text)
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168 ;; was used to do the expansion
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169 (goto-char last-abbrev-location)
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170 (delete-region last-abbrev-location (+ last-abbrev-location adjust))
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171 (insert last-abbrev-text)
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172 (setq adjust (- adjust (length last-abbrev-text)))
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173 (setq last-abbrev-text nil)
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174 (if (< last-abbrev-location opoint)
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175 (goto-char (- opoint adjust))
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176 (goto-char opoint)))))
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177
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178
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179
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180 (defun insert-abbrev-table-description (name human-readable)
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181 "Insert before point a full description of abbrev table named NAME.
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182 NAME is a symbol whose value is an abbrev table.
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183 If optional 2nd arg HUMAN is non-nil, insert a human-readable description.
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184 Otherwise the description is an expression,
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185 a call to `define-abbrev-table', which would
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186 define the abbrev table NAME exactly as it is currently defined."
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187 (let ((table (symbol-value name))
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188 (stream (current-buffer)))
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189 (message "Abbrev-table %s..." name)
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190 (if human-readable
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191 (progn
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192 (prin1 (list name) stream)
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193 ;; Need two terpri's or cretinous edit-abbrevs blows out
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194 (terpri stream)
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195 (terpri stream)
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196 (mapatoms (function (lambda (sym)
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197 (if (symbol-value sym)
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198 (let* ((n (prin1-to-string (symbol-name sym)))
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199 (pos (length n)))
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200 (princ n stream)
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201 (while (< pos 14)
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202 (write-char ?\ stream)
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203 (setq pos (1+ pos)))
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204 (princ (format " %-5S " (symbol-plist sym))
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205 stream)
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206 (if (not (symbol-function sym))
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207 (prin1 (symbol-value sym) stream)
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208 (progn
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209 (setq n (prin1-to-string (symbol-value sym))
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210 pos (+ pos 6 (length n)))
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211 (princ n stream)
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212 (while (< pos 45)
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213 (write-char ?\ stream)
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214 (setq pos (1+ pos)))
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215 (prin1 (symbol-function sym) stream)))
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216 (terpri stream)))))
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217 table)
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218 (terpri stream))
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219 (progn
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220 (princ "\(define-abbrev-table '" stream)
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221 (prin1 name stream)
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222 (princ " '\(\n" stream)
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223 (mapatoms (function (lambda (sym)
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224 (if (symbol-value sym)
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225 (progn
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226 (princ " " stream)
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227 (prin1 (list (symbol-name sym)
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228 (symbol-value sym)
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229 (symbol-function sym)
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230 (symbol-plist sym))
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231 stream)
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232 (terpri stream)))))
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233 table)
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234 (princ " \)\)\n" stream)))
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235 (terpri stream))
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236 (message ""))
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237
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238
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239 (defun abbrev-mode (arg)
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240 "Toggle abbrev mode.
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241 With arg, turn abbrev mode on iff arg is positive.
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242 In abbrev mode, inserting an abbreviation causes it to expand
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243 and be replaced by its expansion."
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244 (interactive "P")
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245 (setq abbrev-mode
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246 (if (null arg) (not abbrev-mode)
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247 (> (prefix-numeric-value arg) 0)))
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248 (redraw-modeline))
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249
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250
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251 (defvar edit-abbrevs-map nil
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252 "Keymap used in edit-abbrevs.")
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253 (if edit-abbrevs-map
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254 nil
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255 (setq edit-abbrevs-map (make-sparse-keymap))
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256 (set-keymap-name edit-abbrevs-map 'edit-abbrevs-map)
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257 (define-key edit-abbrevs-map "\C-x\C-s" 'edit-abbrevs-redefine)
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258 (define-key edit-abbrevs-map "\C-c\C-c" 'edit-abbrevs-redefine))
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259
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260 (defun kill-all-abbrevs ()
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261 "Undefine all defined abbrevs."
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262 (interactive)
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263 (let ((tables abbrev-table-name-list))
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264 (while tables
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265 (clear-abbrev-table (symbol-value (car tables)))
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266 (setq tables (cdr tables)))))
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267
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268 (defun insert-abbrevs ()
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269 "Insert after point a description of all defined abbrevs.
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270 Mark is set after the inserted text."
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271 (interactive)
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272 (push-mark
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273 (save-excursion
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274 (let ((tables abbrev-table-name-list))
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275 (while tables
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276 (insert-abbrev-table-description (car tables) t)
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277 (setq tables (cdr tables))))
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278 (point))))
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279
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280 (defun list-abbrevs ()
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281 "Display a list of all defined abbrevs."
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282 (interactive)
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283 (display-buffer (prepare-abbrev-list-buffer)))
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284
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285 (defun prepare-abbrev-list-buffer ()
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286 (save-excursion
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287 (set-buffer (get-buffer-create "*Abbrevs*"))
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288 (erase-buffer)
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289 (let ((tables abbrev-table-name-list))
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290 (while tables
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291 (insert-abbrev-table-description (car tables) t)
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292 (setq tables (cdr tables))))
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293 (goto-char (point-min))
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294 (set-buffer-modified-p nil)
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295 (edit-abbrevs-mode))
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296 (get-buffer-create "*Abbrevs*"))
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297
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298 (defun edit-abbrevs-mode ()
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299 "Major mode for editing the list of abbrev definitions.
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300 \\{edit-abbrevs-map}"
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301 (interactive)
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302 (setq major-mode 'edit-abbrevs-mode)
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303 (setq mode-name "Edit-Abbrevs")
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304 (use-local-map edit-abbrevs-map))
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305
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306 (defun edit-abbrevs ()
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307 "Alter abbrev definitions by editing a list of them.
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308 Selects a buffer containing a list of abbrev definitions.
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309 You can edit them and type C-c C-c to redefine abbrevs
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310 according to your editing.
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311 Buffer contains a header line for each abbrev table,
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312 which is the abbrev table name in parentheses.
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313 This is followed by one line per abbrev in that table:
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314 NAME USECOUNT EXPANSION HOOK
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315 where NAME and EXPANSION are strings with quotes,
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316 USECOUNT is an integer, and HOOK is any valid function
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317 or may be omitted (it is usually omitted)."
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318 (interactive)
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319 (switch-to-buffer (prepare-abbrev-list-buffer)))
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320
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321 (defun edit-abbrevs-redefine ()
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322 "Redefine abbrevs according to current buffer contents."
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323 (interactive)
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324 (define-abbrevs t)
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325 (set-buffer-modified-p nil))
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326
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327 (defun define-abbrevs (&optional arg)
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328 "Define abbrevs according to current visible buffer contents.
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329 See documentation of edit-abbrevs for info on the format of the
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330 text you must have in the buffer.
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331 With argument, eliminate all abbrev definitions except
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332 the ones defined from the buffer now."
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333 (interactive "P")
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334 (if arg (kill-all-abbrevs))
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335 (save-excursion
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336 (goto-char (point-min))
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337 (while (and (not (eobp)) (re-search-forward "^(" nil t))
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338 (let* ((buf (current-buffer))
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339 (table (read buf))
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340 (abbrevs '()))
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341 (forward-line 1)
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342 (while (progn (forward-line 1)
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343 (not (eolp)))
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344 (let* ((name (read buf))
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345 (count (read buf))
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346 (exp (read buf))
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347 hook)
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348 (skip-chars-backward " \t\n\f")
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349 (setq hook (if (not (eolp)) (read buf)))
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350 (skip-chars-backward " \t\n\f")
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351 (setq abbrevs (cons (list name exp hook count) abbrevs))))
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352 (define-abbrev-table table abbrevs)))))
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353
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354 (defun read-abbrev-file (&optional file quietly)
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355 "Read abbrev definitions from file written with write-abbrev-file.
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356 Takes file name as argument.
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357 Optional second argument non-nil means don't print anything."
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358 (interactive "fRead abbrev file: ")
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359 (load (if (and file (> (length file) 0)) file abbrev-file-name)
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360 nil quietly)
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361 (setq save-abbrevs t abbrevs-changed nil))
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362
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363 (defun quietly-read-abbrev-file (&optional file)
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364 "Read abbrev definitions from file written with write-abbrev-file.
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365 Takes file name as argument. Does not print anything."
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366 ;(interactive "fRead abbrev file: ")
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367 (read-abbrev-file file t))
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368
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369 (defun write-abbrev-file (file)
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370 "Write all abbrev definitions to file of Lisp code.
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371 The file can be loaded to define the same abbrevs."
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372 (interactive
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373 (list
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374 (read-file-name "Write abbrev file: "
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375 (file-name-directory (expand-file-name abbrev-file-name))
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376 abbrev-file-name)))
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377 (or (and file (> (length file) 0))
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378 (setq file abbrev-file-name))
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379 (save-excursion
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380 (set-buffer (get-buffer-create " write-abbrev-file"))
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381 (erase-buffer)
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382 (let ((tables abbrev-table-name-list))
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383 (while tables
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384 (insert-abbrev-table-description (car tables) nil)
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385 (setq tables (cdr tables))))
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386 (write-region 1 (point-max) file)
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387 (erase-buffer)))
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388
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389 (defun add-mode-abbrev (arg)
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390 "Define mode-specific abbrev for region or last word(s) before point.
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391 Argument is how many words before point form the expansion;
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392 or zero means the region is the expansion.
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393 A negative argument means to undefine the specified abbrev.
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394 Reads the abbreviation in the minibuffer.
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395
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396 Don't use this function in a Lisp program; use define-abbrev instead."
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397 ;; XEmacs change:
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398 (interactive "P")
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399 (add-abbrev (if only-global-abbrevs
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400 global-abbrev-table
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401 (or local-abbrev-table
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402 (error "No per-mode abbrev table.")))
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403 "Mode"
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404 arg))
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405
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406 (defun add-global-abbrev (arg)
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407 "Define global (all modes) abbrev for region or last word(s) before point.
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408 Argument is how many words before point form the expansion;
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409 or zero means the region is the expansion.
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410 A negative argument means to undefine the specified abbrev.
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411 Reads the abbreviation in the minibuffer.
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412
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413 Don't use this function in a Lisp program; use define-abbrev instead."
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414 ;; XEmacs change:
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415 (interactive "P")
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416 (add-abbrev global-abbrev-table "Global" arg))
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417
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418 (defun add-abbrev (table type arg)
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419 ;; XEmacs change:
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420 (if (and (not arg) (region-active-p)) (setq arg 0)
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421 (setq arg (prefix-numeric-value arg)))
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422 (let ((exp (and (>= arg 0)
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423 (buffer-substring
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424 (point)
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425 (if (= arg 0) (mark)
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426 (save-excursion (forward-word (- arg)) (point))))))
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427 name)
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428 (setq name
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429 (read-string (format (if exp "%s abbrev for \"%s\": "
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430 "Undefine %s abbrev: ")
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431 type exp)))
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432 (if (or (null exp)
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433 (not (abbrev-expansion name table))
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434 (y-or-n-p (format "%s expands to \"%s\"; redefine? "
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435 name (abbrev-expansion name table))))
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436 (define-abbrev table (downcase name) exp))))
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437
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438 (defun inverse-add-mode-abbrev (arg)
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439 "Define last word before point as a mode-specific abbrev.
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440 With argument N, defines the Nth word before point.
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441 Reads the expansion in the minibuffer.
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442 Expands the abbreviation after defining it."
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443 (interactive "p")
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444 (inverse-add-abbrev (if only-global-abbrevs
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445 global-abbrev-table
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446 (or local-abbrev-table
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447 (error "No per-mode abbrev table.")))
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448 "Mode"
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449 arg))
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450
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451 (defun inverse-add-global-abbrev (arg)
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452 "Define last word before point as a global (mode-independent) abbrev.
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453 With argument N, defines the Nth word before point.
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454 Reads the expansion in the minibuffer.
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455 Expands the abbreviation after defining it."
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456 (interactive "p")
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457 (inverse-add-abbrev global-abbrev-table "Global" arg))
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458
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459 (defun inverse-add-abbrev (table type arg)
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460 (let (name nameloc exp)
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461 (save-excursion
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462 (forward-word (- arg))
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463 (setq name (buffer-substring (point) (progn (forward-word 1)
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464 (setq nameloc (point))))))
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465 (setq exp (read-string (format "%s expansion for \"%s\": "
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466 type name)))
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467 (if (or (not (abbrev-expansion name table))
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468 (y-or-n-p (format "%s expands to \"%s\"; redefine? "
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469 name (abbrev-expansion name table))))
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470 (progn
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471 (define-abbrev table (downcase name) exp)
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472 (save-excursion
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473 (goto-char nameloc)
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474 (expand-abbrev))))))
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475
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476 (defun abbrev-prefix-mark (&optional arg)
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477 "Mark current point as the beginning of an abbrev.
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478 Abbrev to be expanded starts here rather than at
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479 beginning of word. This way, you can expand an abbrev
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480 with a prefix: insert the prefix, use this command,
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481 then insert the abbrev."
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482 (interactive "P")
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483 (or arg (expand-abbrev))
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484 (setq abbrev-start-location (point-marker)
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485 abbrev-start-location-buffer (current-buffer))
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486 (insert "-"))
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487
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488 (defun expand-region-abbrevs (start end &optional noquery)
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489 "For abbrev occurrence in the region, offer to expand it.
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490 The user is asked to type y or n for each occurrence.
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491 A numeric argument means don't query; expand all abbrevs.
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492 Calling from a program, arguments are START END &optional NOQUERY."
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493 (interactive "r\nP")
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494 (save-excursion
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495 (goto-char start)
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496 (let ((lim (- (point-max) end))
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497 pnt string)
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498 (while (and (not (eobp))
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499 (progn (forward-word 1)
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500 (<= (setq pnt (point)) (- (point-max) lim))))
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501 (if (abbrev-expansion
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502 (setq string
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503 (buffer-substring
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504 (save-excursion (forward-word -1) (point))
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505 pnt)))
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506 (if (or noquery (y-or-n-p (format "Expand `%s'? " string)))
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507 (expand-abbrev)))))))
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