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1 ;;; -*- Emacs-Lisp -*-
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2 ;;; YaTeX sectioning browser.
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3 ;;; yatexsec.el
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4 ;;; (c ) 1994 by HIROSE Yuuji [yuuji@ae.keio.ac.jp]
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46
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5 ;;; Last modified Tue Sep 20 01:35:32 1994 on figaro
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23
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6 ;;; $Id$
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7
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8 (defvar YaTeX-sectioning-level
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9 '(("part" . 0) ("chapter" . 1) ("section" . 2) ("subsection" . 3)
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10 ("subsubsection" . 4) ("paragraph" . 5) ("subparagraph" . 6))
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11 "Sectioning level.")
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12
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13 (defun YaTeX-sectioning-map-hide (map)
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14 (let ((ch ?0))
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15 (while (<= ch ?9)
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16 (define-key map (char-to-string ch) 'YaTeX-sectioning-hide)
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17 (setq ch (1+ ch))))
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18 )
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19
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20 (defvar YaTeX-minibuffer-sectioning-map nil
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21 "Key map used in minibuffer for sectioning.")
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22 (if YaTeX-minibuffer-sectioning-map nil
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23 (setq YaTeX-minibuffer-sectioning-map
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24 (copy-keymap minibuffer-local-completion-map))
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25 (define-key YaTeX-minibuffer-sectioning-map "\C-p"
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26 'YaTeX-sectioning-up)
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27 (define-key YaTeX-minibuffer-sectioning-map "\C-e"
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28 'YaTeX-sectioning-up)
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29 (define-key YaTeX-minibuffer-sectioning-map "\C-i"
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30 'YaTeX-minibuffer-complete)
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31 (define-key YaTeX-minibuffer-sectioning-map " "
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32 'YaTeX-minibuffer-complete)
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33 (define-key YaTeX-minibuffer-sectioning-map "\C-n"
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34 'YaTeX-sectioning-down)
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35 (define-key YaTeX-minibuffer-sectioning-map "\C-x"
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36 'YaTeX-sectioning-down)
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37 (define-key YaTeX-minibuffer-sectioning-map "\C-v"
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38 'YaTeX-sectioning-scroll-up)
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39 (define-key YaTeX-minibuffer-sectioning-map "\C-c"
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40 'YaTeX-sectioning-scroll-up)
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41 (define-key YaTeX-minibuffer-sectioning-map "\M-v"
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42 'YaTeX-sectioning-scroll-down)
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43 (define-key YaTeX-minibuffer-sectioning-map "\C-r"
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44 'YaTeX-sectioning-scroll-down)
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45 (define-key YaTeX-minibuffer-sectioning-map "\C-w"
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46 '(lambda () (interactive) (YaTeX-sectioning-scroll-down 1)))
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47 (define-key YaTeX-minibuffer-sectioning-map "\C-z"
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48 '(lambda () (interactive) (YaTeX-sectioning-scroll-up 1)))
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49 (define-key YaTeX-minibuffer-sectioning-map "\C-l"
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50 'YaTeX-sectioning-recenter)
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51 (define-key YaTeX-minibuffer-sectioning-map "?"
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52 'YaTeX-sectioning-help)
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53 (YaTeX-sectioning-map-hide YaTeX-minibuffer-sectioning-map)
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54 )
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55
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56 (defvar YaTeX-sectioning-buffer-map nil
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57 "Key map used in YaTeX-sectioning-buffer.")
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58 (if YaTeX-sectioning-buffer-map nil
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59 (setq YaTeX-sectioning-buffer-map (make-sparse-keymap))
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60 (define-key YaTeX-sectioning-buffer-map " "
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61 'YaTeX-sectioning-buffer-jump)
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62 (define-key YaTeX-sectioning-buffer-map (concat YaTeX-prefix "\C-c")
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63 'YaTeX-sectioning-buffer-jump)
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64 (YaTeX-sectioning-map-hide YaTeX-sectioning-buffer-map)
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65 )
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66
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67 (defvar YaTeX-sectioning-buffer-parent nil)
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68 (defun YaTeX-sectioning-buffer-jump ()
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69 (interactive)
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70 (if (and YaTeX-sectioning-buffer-parent
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71 (get-buffer YaTeX-sectioning-buffer-parent))
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72 (let (ptn)
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73 (beginning-of-line)
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74 (if (re-search-forward YaTeX-sectioning-regexp)
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75 (progn (setq ptn (buffer-substring
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76 (1- (match-beginning 0))
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77 (progn (skip-chars-forward "^}") (1+ (point)))))
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78 (YaTeX-showup-buffer YaTeX-sectioning-buffer-parent nil t)
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79 (goto-char (point-max))
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80 (search-backward ptn))
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81 (message "No line number expression."))))
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82 )
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83
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84 (defun YaTeX-sectioning-hide-under (n)
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85 "Hide sectioning commands under level N."
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86 (let ((cw (selected-window)))
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87 (YaTeX-showup-buffer YaTeX-sectioning-buffer nil t)
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88 (if (>= n (1- (length YaTeX-sectioning-level)))
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89 (progn
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90 (set-selective-display nil)
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91 (message "Show all."))
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92 (set-selective-display (1+ n))
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93 (if (nth n YaTeX-sectioning-level)
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94 (message "Hide lower than %s" (car (nth n YaTeX-sectioning-level)))
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95 (message "")))
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96 (if (numberp selective-display)
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97 (setq mode-name (format "level %d" (1- selective-display)))
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98 (setq mode-name (format "all")))
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99 (select-window cw))
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100 )
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101 (defun YaTeX-sectioning-hide ()
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102 "Call YaTeX-sectioning-hide-under with argument according to pressed key."
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103 (interactive)
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104 (YaTeX-sectioning-hide-under (- last-command-char ?0)))
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105
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106 (defun YaTeX-sectioning-help ()
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107 "Show help of sectioning."
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108 (interactive)
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109 (let ((cw (selected-window)) sb (hb (get-buffer-create "*Help*")))
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110 (unwind-protect
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111 (progn
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112 (other-window 1)
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113 (setq sb (current-buffer))
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114 (switch-to-buffer hb)
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115 (erase-buffer)
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116 (insert "===== View sectioning =====
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117 C-p Up sectioning level. 0 Show only \\part,
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118 C-n Down sectioning level. 1 and \\chapter,
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119 C-v Scroll up *Sectioning line* buffer. 2 and \\section,
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120 M-v Scroll down *Sectioning line* buffer. 3 and \\subsection,
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121 SPC Complete word. 4 and \\subsubsection,
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122 TAB Complete word. 5 and \\paragraph.
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123 C-l Recenter recent line. 6 Show all.
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124 RET Select.
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125 ==== End of HELP =====
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126 ")
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127 (set-buffer-modified-p nil)
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128 (goto-char (point-min))
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129 (momentary-string-display "" (point-min)))
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130 (bury-buffer hb)
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131 (switch-to-buffer sb)
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132 (select-window cw)))
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133 )
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134
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135 (defun YaTeX-sectioning-up (n)
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136 "Up section level.
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137 Refers the YaTeX-read-section-in-minibuffer's local variable minibuffer-start."
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138 (interactive "p")
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139 (if (eq (selected-window) (minibuffer-window))
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140 (let*((command (buffer-string))
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141 (alist YaTeX-sectioning-level)
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142 (level (cdr-safe (assoc command alist))))
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143 (or level (error "No such sectioning command."))
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144 (setq level (- level n))
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145 (if (or (< level 0) (>= level (length alist)))
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146 (ding)
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147 (erase-buffer)
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148 (insert (car (nth level alist))))
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149 ))
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150 )
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151
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152 (defun YaTeX-sectioning-down (n)
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153 "Down section level."
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154 (interactive "p")
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155 (YaTeX-sectioning-up (- n))
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156 )
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157
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158 (defun YaTeX-sectioning-scroll-up (n)
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159 (interactive "P")
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160 (let ((section-buffer YaTeX-sectioning-buffer)
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161 (cw (selected-window)))
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162 (YaTeX-showup-buffer section-buffer nil t)
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163 (unwind-protect
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164 (scroll-up (or n (- (window-height) 2)))
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165 (select-window cw)))
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166 )
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167
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168 (defun YaTeX-sectioning-scroll-down (n)
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169 (interactive "P")
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170 (let ((section-buffer YaTeX-sectioning-buffer)
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171 (cw (selected-window)))
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172 (YaTeX-showup-buffer section-buffer nil t)
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173 (unwind-protect
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174 (scroll-down (or n (- (window-height) 2)))
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175 (select-window cw)))
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176 )
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177
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178 (defun YaTeX-sectioning-recenter (arg)
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179 "Recenter `<<--' line"
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180 (interactive "P")
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181 (let ((cw (selected-window)))
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182 (unwind-protect
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183 (progn
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184 (YaTeX-showup-buffer YaTeX-sectioning-buffer nil t)
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185 (or (search-forward "<<--" nil t)
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186 (search-backward "<<--" nil t))
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187 (recenter (or arg (/ (window-height) 2))))
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188 (select-window cw)))
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189 )
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190
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191 (defvar YaTeX-sectioning-minibuffer " *sectioning*"
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192 "Miniuffer used for sectioning")
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193 (defun YaTeX-read-section-in-minibuffer (prompt table &optional default delim)
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194 (interactive)
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195 (let ((minibuffer-completion-table table))
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196 (read-from-minibuffer
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197 prompt default YaTeX-minibuffer-sectioning-map))
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198 )
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199
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200 (defun YaTeX-get-sectioning-level ()
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201 "Get section-level on the cursor."
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202 (cdr-safe (assoc (buffer-substring
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203 (point)
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204 (progn (skip-chars-forward "a-z") (point)))
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205 YaTeX-sectioning-level))
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206 )
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207
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208 (defvar YaTeX-sectioning-buffer "*Sectioning lines*")
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209 (defun YaTeX-colloect-sections ()
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210 "Collect all the lines which contains sectioning command."
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211 (let ((cw (selected-window)) level indent begp (prevp 1) (prevl 1)
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212 (pattern (concat YaTeX-ec-regexp
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213 "\\(" YaTeX-sectioning-regexp "\\)\\*?{"))
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214 (cb (current-buffer)))
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215 (save-excursion
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216 (YaTeX-showup-buffer YaTeX-sectioning-buffer) ;show buffer
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217 (goto-char (point-min))
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218 (with-output-to-temp-buffer YaTeX-sectioning-buffer
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219 (while (re-search-forward pattern nil t)
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220 (goto-char (1+ (match-beginning 0)))
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221 (setq level (YaTeX-get-sectioning-level)
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222 begp (match-beginning 0))
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223 ;;(beginning-of-line)
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224 ;;(skip-chars-forward " \t")
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225 (setq indent (format "%%%ds" level))
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226 (princ (format indent ""))
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227 (if (YaTeX-on-comment-p) (princ "%"))
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228 (princ (buffer-substring begp (progn (forward-list 1) (point))))
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229 (setq prevl (+ prevl (count-lines prevp (point)) -1)
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230 prevp (point))
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231 (princ (format " (line:%d)" prevl))
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232 (princ "\n")))
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233 (set-buffer YaTeX-sectioning-buffer)
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234 (make-local-variable 'YaTeX-sectioning-buffer-parent)
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235 (use-local-map YaTeX-sectioning-buffer-map)
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236 (setq YaTeX-sectioning-buffer-parent cb)
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237 (if (numberp selective-display)
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238 (setq mode-name (format "level %d" (1- selective-display))))
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239 YaTeX-sectioning-buffer))
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240 )
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241
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242 (defun YaTeX-section-overview ()
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243 "Show section overview. Return the nearest sectioning command."
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244 (interactive)
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245 (let ((cw (selected-window)) (ln (count-lines (point-min) (point)))
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246 (pattern "(line:\\([0-9]+\\))")
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247 (secbuf YaTeX-sectioning-buffer) (command ""))
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248 (save-excursion
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249 (setq secbuf (YaTeX-colloect-sections))
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250 (YaTeX-showup-buffer secbuf nil t)
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251 (goto-char (point-max))
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252 (while (re-search-backward pattern nil t)
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253 (if (< ln (string-to-int (YaTeX-match-string 1))) nil
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254 (beginning-of-line)
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255 (search-forward YaTeX-ec)
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256 (looking-at YaTeX-TeX-token-regexp)
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257 (setq command (YaTeX-match-string 0))
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258 (end-of-line)
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259 (insert " <<--")
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260 (setq pattern (concat "HackyRegexp" "ForFailure"))))
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261 (set-buffer-modified-p nil)
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262 (forward-line 1)
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263 (if (eobp) (recenter -1) (recenter -3))
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264 (select-window cw)
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265 command))
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266 )
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267
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268 (defun YaTeX-make-section-with-overview ()
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269 "Input sectining command with previous overview."
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270 (interactive)
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271 (insert
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272 YaTeX-ec
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273 (YaTeX-read-section-in-minibuffer
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274 "Sectioning(Up=C-p, Down=C-n, Help=?): "
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275 YaTeX-sectioning-level (YaTeX-section-overview))
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276 "{}")
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277 (forward-char -1)
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278 )
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279
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280 (provide 'yatexsec)
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281 ;;(YaTeX-define-key "o" 'YaTeX-make-section-with-overview)
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