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1 ;;; tl-str.el --- Emacs Lisp Library module about string
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3 ;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
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5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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6 ;; Version: $Id: tl-str.el,v 1.3 1997/02/02 05:06:17 steve Exp $
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7 ;; Keywords: string
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8
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9 ;; This file is part of tl (Tiny Library).
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10
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11 ;; This program is free software; you can redistribute it and/or
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12 ;; modify it under the terms of the GNU General Public License as
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13 ;; published by the Free Software Foundation; either version 2, or (at
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14 ;; your option) any later version.
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15
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16 ;; This program is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Code:
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27
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28 (require 'emu)
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29 (require 'tl-list)
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30
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31
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32 ;;; @ converter
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33 ;;;
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34
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35 (defun expand-char-ranges (str)
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36 (let ((i 0)
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37 (len (length str))
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38 chr pchr nchr
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39 (dest ""))
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40 (while (< i len)
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41 (setq chr (elt str i))
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42 (cond ((and pchr (eq chr ?-))
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43 (setq pchr (1+ pchr))
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44 (setq i (1+ i))
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45 (setq nchr (elt str i))
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46 (while (<= pchr nchr)
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47 (setq dest (concat dest (char-to-string pchr)))
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48 (setq pchr (1+ pchr))
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49 )
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50 )
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51 (t
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52 (setq dest (concat dest (char-to-string chr)))
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53 ))
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54 (setq pchr chr)
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55 (setq i (1+ i))
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56 )
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57 dest))
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58
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59
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60 ;;; @ space
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61 ;;;
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62
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63 (defun eliminate-top-spaces (str)
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64 "Eliminate top sequence of space or tab and return it. [tl-str.el]"
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65 (if (string-match "^[ \t]+" str)
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66 (substring str (match-end 0))
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67 str))
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68
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69 (defun eliminate-last-spaces (str)
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70 "Eliminate last sequence of space or tab and return it. [tl-str.el]"
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71 (if (string-match "[ \t]+$" str)
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72 (substring str 0 (match-beginning 0))
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73 str))
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74
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75 (defun replace-space-with-underline (str)
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76 (mapconcat (function
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77 (lambda (arg)
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78 (char-to-string
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79 (if (eq arg ?\ )
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80 ?_
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81 arg)))) str "")
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82 )
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83
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84
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85 ;;; @ version
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86 ;;;
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87
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88 (defun version-to-list (str)
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89 (if (string-match "[0-9]+" str)
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90 (let ((dest
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91 (list
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92 (string-to-number
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93 (substring str (match-beginning 0)(match-end 0))
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94 ))))
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95 (setq str (substring str (match-end 0)))
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96 (while (string-match "^\\.[0-9]+" str)
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97 (setq dest
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98 (cons
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99 (string-to-number
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100 (substring str (1+ (match-beginning 0))(match-end 0)))
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101 dest))
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102 (setq str (substring str (match-end 0)))
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103 )
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104 (nreverse dest)
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105 )))
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106
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107 (defun version< (v1 v2)
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108 (or (listp v1)
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109 (setq v1 (version-to-list v1))
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110 )
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111 (or (listp v2)
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112 (setq v2 (version-to-list v2))
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113 )
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114 (catch 'tag
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115 (while (and v1 v2)
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116 (cond ((< (car v1)(car v2))
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117 (throw 'tag v2)
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118 )
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119 ((> (car v1)(car v2))
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120 (throw 'tag nil)
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121 ))
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122 (setq v1 (cdr v1)
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123 v2 (cdr v2))
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124 )
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125 v2))
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126
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127 (defun version<= (v1 v2)
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128 (or (listp v1)
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129 (setq v1 (version-to-list v1))
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130 )
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131 (or (listp v2)
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132 (setq v2 (version-to-list v2))
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133 )
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134 (catch 'tag
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135 (while (and v1 v2)
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136 (cond ((< (car v1)(car v2))
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137 (throw 'tag v2)
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138 )
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139 ((> (car v1)(car v2))
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140 (throw 'tag nil)
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141 ))
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142 (setq v1 (cdr v1)
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143 v2 (cdr v2))
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144 )
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145 (or v2 (and (null v1)(null v2)))
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146 ))
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147
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148 (defun version> (v1 v2)
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149 (or (listp v1)
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150 (setq v1 (version-to-list v1))
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151 )
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152 (or (listp v2)
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153 (setq v2 (version-to-list v2))
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154 )
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155 (catch 'tag
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156 (while (and v1 v2)
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157 (cond ((> (car v1)(car v2))
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158 (throw 'tag v1)
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159 )
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160 ((< (car v1)(car v2))
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161 (throw 'tag nil)
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162 ))
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163 (setq v1 (cdr v1)
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164 v2 (cdr v2))
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165 )
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166 v1))
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167
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168 (defun version>= (v1 v2)
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169 (or (listp v1)
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170 (setq v1 (version-to-list v1))
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171 )
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172 (or (listp v2)
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173 (setq v2 (version-to-list v2))
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174 )
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175 (catch 'tag
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176 (while (and v1 v2)
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177 (cond ((> (car v1)(car v2))
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178 (throw 'tag v1)
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179 )
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180 ((< (car v1)(car v2))
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181 (throw 'tag nil)
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182 ))
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183 (setq v1 (cdr v1)
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184 v2 (cdr v2))
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185 )
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186 (or v1 (and (null v1)(null v2)))
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187 ))
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188
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189
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190 ;;; @ RCS version
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191 ;;;
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192
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193 (defun get-version-string (id)
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194 "Return a version-string from RCS ID. [tl-str.el]"
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195 (and (string-match ",v \\([0-9][0-9.][0-9.]+\\)" id)
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196 (substring id (match-beginning 1)(match-end 1))
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197 ))
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198
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199
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200 ;;; @ file name
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201 ;;;
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202
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203 (defun file-name-non-extension (filename)
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204 (if (string-match "\\.[^.]+$" filename)
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205 (substring filename 0 (match-beginning 0))
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206 filename))
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207
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208 (autoload 'replace-as-filename "filename"
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209 "Return safety filename from STRING.")
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210
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211
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212 ;;; @ symbol
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213 ;;;
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214
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215 (defun symbol-concat (&rest args)
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216 "Return a symbol whose name is concatenation of arguments ARGS
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217 which are string or symbol. [tl-str.el]"
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218 (intern (apply (function concat)
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219 (mapcar (function
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220 (lambda (s)
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221 (cond ((symbolp s) (symbol-name s))
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222 ((stringp s) s)
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223 )
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224 ))
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225 args)))
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226 )
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227
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228
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229 ;;; @ matching
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230 ;;;
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231
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232 (defun top-string-match (pat str)
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233 "Return a list (MATCHED REST) if string PAT is top substring of
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234 string STR. [tl-str.el]"
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235 (if (string-match
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236 (concat "^" (regexp-quote pat))
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237 str)
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238 (list pat (substring str (match-end 0)))
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239 ))
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240
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241 (defun middle-string-match (pat str)
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242 "Return a list (PREVIOUS MATCHED REST) if string PAT is found in
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243 string STR. [tl-str.el]"
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244 (if (equal pat str)
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245 (list nil pat nil)
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246 (if (string-match (regexp-quote pat) str)
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247 (let ((b (match-beginning 0))
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248 (e (match-end 0)) )
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249 (list (if (not (= b 0))
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250 (substring str 0 b)
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251 )
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252 pat
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253 (if (> (length str) e)
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254 (substring str e)
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255 )
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256 )))))
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257
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258 (defun re-top-string-match (pat str)
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259 "Return a list (MATCHED REST) if regexp PAT is matched as top
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260 substring of string STR. [tl-str.el]"
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261 (if (string-match (concat "^" pat) str)
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262 (let ((e (match-end 0)))
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263 (list (substring str 0 e)(substring str e))
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264 )))
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265
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266
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267 ;;; @ compare
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268 ;;;
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269
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270 (defun string-compare-from-top (str1 str2)
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271 (let* ((len1 (length str1))
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272 (len2 (length str2))
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273 (len (min len1 len2))
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274 (p 0)
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275 c1 c2)
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276 (while (and (< p len)
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277 (progn
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278 (setq c1 (sref str1 p)
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279 c2 (sref str2 p))
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280 (eq c1 c2)
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281 ))
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282 (setq p (+ p (char-length c1)))
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283 )
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284 (and (> p 0)
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285 (let ((matched (substring str1 0 p))
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286 (r1 (and (< p len1)(substring str1 p)))
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287 (r2 (and (< p len2)(substring str2 p)))
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288 )
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289 (if (eq r1 r2)
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290 matched
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291 (list 'seq matched (list 'or r1 r2))
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292 )))))
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293
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294
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295 ;;; @ regexp
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296 ;;;
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297
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298 (defun regexp-* (regexp)
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299 (concat regexp "*"))
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300
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301 (defun regexp-or (&rest args)
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302 (concat "\\(" (mapconcat (function identity) args "\\|") "\\)"))
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303
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304
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305 ;;; @ end
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306 ;;;
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307
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308 (provide 'tl-str)
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309
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310 ;;; tl-str.el ends here
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