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0
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1 /* XEmacs case conversion functions.
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2 Copyright (C) 1985, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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183
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21 /* Synched up with: FSF 19.34. */
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0
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22
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23 #include <config.h>
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24 #include "lisp.h"
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25
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26 #include "buffer.h"
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27 #include "commands.h"
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28 #include "insdel.h"
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29 #include "syntax.h"
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30
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31 enum case_action {CASE_UP, CASE_DOWN, CASE_CAPITALIZE, CASE_CAPITALIZE_UP};
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32
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33 static Lisp_Object
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183
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34 casify_object (enum case_action flag, Lisp_Object obj, Lisp_Object buffer)
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0
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35 {
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183
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36 struct buffer *buf = decode_buffer (buffer, 0);
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37 REGISTER int inword = (flag == CASE_DOWN);
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38 struct Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
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0
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39
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40 while (1)
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41 {
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42 if (CHAR_OR_CHAR_INTP (obj))
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43 {
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183
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44 Emchar c;
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0
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45 CHECK_CHAR_COERCE_INT (obj);
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46 c = XCHAR (obj);
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47 if (IN_TRT_TABLE_DOMAIN (c))
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183
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48 obj = make_char (inword ? DOWNCASE (buf, c) : UPCASE1 (buf, c));
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0
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49 return obj;
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50 }
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51 if (STRINGP (obj))
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52 {
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183
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53 Charcount i;
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54 Charcount len = string_char_length (XSTRING (obj));
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0
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55 obj = Fcopy_sequence (obj);
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56 for (i = 0; i < len; i++)
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57 {
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183
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58 Emchar c = string_char (XSTRING (obj), i);
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0
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59 if (inword)
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60 c = DOWNCASE (buf, c);
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61 else if (!UPPERCASEP (buf, c)
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62 && (!inword || flag != CASE_CAPITALIZE_UP))
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63 c = UPCASE1 (buf, c);
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64 set_string_char (XSTRING (obj), i, c);
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65 if ((int) flag >= (int) CASE_CAPITALIZE)
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66 inword = WORD_SYNTAX_P (syntax_table, c);
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67 }
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68 return obj;
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69 }
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70 obj = wrong_type_argument (Qchar_or_string_p, obj);
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71 }
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72 }
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73
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20
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74 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
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0
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75 Convert argument to upper case and return that.
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76 The argument may be a character or string. The result has the same type.
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77 The argument object is not altered--the value is a copy.
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78 See also `capitalize', `downcase' and `upcase-initials'.
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79 Optional second arg BUFFER specifies which buffer's case tables to use,
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80 and defaults to the current buffer.
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20
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81 */
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82 (obj, buffer))
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0
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83 {
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183
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84 return casify_object (CASE_UP, obj, buffer);
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0
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85 }
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86
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20
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87 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
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88 Convert argument to lower case and return that.
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89 The argument may be a character or string. The result has the same type.
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90 The argument object is not altered--the value is a copy.
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91 Optional second arg BUFFER specifies which buffer's case tables to use,
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92 and defaults to the current buffer.
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20
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93 */
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94 (obj, buffer))
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0
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95 {
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183
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96 return casify_object (CASE_DOWN, obj, buffer);
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0
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97 }
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98
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20
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99 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
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100 Convert argument to capitalized form and return that.
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101 This means that each word's first character is upper case
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102 and the rest is lower case.
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103 The argument may be a character or string. The result has the same type.
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104 The argument object is not altered--the value is a copy.
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105 Optional second arg BUFFER specifies which buffer's case tables to use,
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106 and defaults to the current buffer.
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20
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107 */
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108 (obj, buffer))
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0
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109 {
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183
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110 return casify_object (CASE_CAPITALIZE, obj, buffer);
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111 }
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112
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113 /* Like Fcapitalize but change only the initials. */
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114
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20
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115 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
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116 Convert the initial of each word in the argument to upper case.
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117 Do not change the other letters of each word.
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118 The argument may be a character or string. The result has the same type.
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119 The argument object is not altered--the value is a copy.
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120 Optional second arg BUFFER specifies which buffer's case tables to use,
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121 and defaults to the current buffer.
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122 */
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123 (obj, buffer))
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124 {
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183
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125 return casify_object (CASE_CAPITALIZE_UP, obj, buffer);
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126 }
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127
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128 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
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129 b and e specify range of buffer to operate on. */
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130
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131 static void
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183
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132 casify_region_internal (enum case_action flag, Lisp_Object b, Lisp_Object e,
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133 struct buffer *buf)
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0
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134 {
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135 /* This function can GC */
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136 REGISTER Bufpos i;
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137 Bufpos start, end;
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167
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138 REGISTER int inword = (flag == CASE_DOWN);
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183
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139 struct Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
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140 int mccount;
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141
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142 if (EQ (b, e))
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143 /* Not modifying because nothing marked */
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144 return;
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145
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146 get_buffer_range_char (buf, b, e, &start, &end, 0);
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147
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148 mccount = begin_multiple_change (buf, start, end);
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149 record_change (buf, start, end - start);
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150
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151 for (i = start; i < end; i++)
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152 {
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183
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153 Emchar c = BUF_FETCH_CHAR (buf, i);
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154 Emchar oldc = c;
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155
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156 if (inword && flag != CASE_CAPITALIZE_UP)
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157 c = DOWNCASE (buf, c);
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158 else if (!UPPERCASEP (buf, c)
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159 && (!inword || flag != CASE_CAPITALIZE_UP))
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160 c = UPCASE1 (buf, c);
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161
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183
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162 if (oldc != c)
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163 {
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164 buffer_replace_char (buf, i, c, 1, (i == start));
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165 BUF_MODIFF (buf)++;
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166 }
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0
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167 /* !!#### need to revalidate the start and end pointers in case
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168 the buffer was changed */
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169 if ((int) flag >= (int) CASE_CAPITALIZE)
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170 inword = WORD_SYNTAX_P (syntax_table, c);
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171 }
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172 end_multiple_change (buf, mccount);
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173 }
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174
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183
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175 INLINE Lisp_Object
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176 casify_region (enum case_action flag, Lisp_Object b, Lisp_Object e,
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177 Lisp_Object buffer)
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178 {
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179 casify_region_internal (flag, b, e, decode_buffer (buffer, 1));
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180 return Qnil;
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181 }
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182
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20
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183 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
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184 Convert the region to upper case. In programs, wants two arguments.
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185 These arguments specify the starting and ending character numbers of
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186 the region to operate on. When used as a command, the text between
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187 point and the mark is operated on.
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188 See also `capitalize-region'.
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189 Optional third arg BUFFER defaults to the current buffer.
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20
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190 */
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191 (b, e, buffer))
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0
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192 {
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193 /* This function can GC */
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183
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194 return casify_region (CASE_UP, b, e, buffer);
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195 }
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196
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197 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
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198 Convert the region to lower case. In programs, wants two arguments.
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199 These arguments specify the starting and ending character numbers of
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200 the region to operate on. When used as a command, the text between
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201 point and the mark is operated on.
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202 Optional third arg BUFFER defaults to the current buffer.
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203 */
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204 (b, e, buffer))
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0
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205 {
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206 /* This function can GC */
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183
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207 return casify_region (CASE_DOWN, b, e, buffer);
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208 }
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209
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210 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
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211 Convert the region to capitalized form.
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212 Capitalized form means each word's first character is upper case
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213 and the rest of it is lower case.
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214 In programs, give two arguments, the starting and ending
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215 character positions to operate on.
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216 Optional third arg BUFFER defaults to the current buffer.
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217 */
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218 (b, e, buffer))
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219 {
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220 /* This function can GC */
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183
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221 return casify_region (CASE_CAPITALIZE, b, e, buffer);
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222 }
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223
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224 /* Like Fcapitalize_region but change only the initials. */
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225
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20
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226 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
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227 Upcase the initial of each word in the region.
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228 Subsequent letters of each word are not changed.
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229 In programs, give two arguments, the starting and ending
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230 character positions to operate on.
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231 Optional third arg BUFFER defaults to the current buffer.
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232 */
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233 (b, e, buffer))
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234 {
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183
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235 return casify_region (CASE_CAPITALIZE_UP, b, e, buffer);
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236 }
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237
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238
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239 static Lisp_Object
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183
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240 casify_word (enum case_action flag, Lisp_Object arg, Lisp_Object buffer)
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241 {
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242 Bufpos farend;
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183
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243 struct buffer *buf = decode_buffer (buffer, 1);
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244
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245 CHECK_INT (arg);
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183
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246
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247 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
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248 if (!farend)
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249 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
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250
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183
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251 casify_region_internal (flag, make_int (BUF_PT (buf)), make_int (farend), buf);
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252 BUF_SET_PT (buf, max (BUF_PT (buf), farend));
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253 return Qnil;
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254 }
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255
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256 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
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257 Convert following word (or ARG words) to upper case, moving over.
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258 With negative argument, convert previous words but do not move.
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259 See also `capitalize-word'.
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260 Optional second arg BUFFER defaults to the current buffer.
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261 */
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262 (arg, buffer))
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263 {
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264 /* This function can GC */
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183
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265 return casify_word (CASE_UP, arg, buffer);
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266 }
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267
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268 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
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269 Convert following word (or ARG words) to lower case, moving over.
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270 With negative argument, convert previous words but do not move.
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271 Optional second arg BUFFER defaults to the current buffer.
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20
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272 */
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273 (arg, buffer))
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0
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274 {
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275 /* This function can GC */
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183
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276 return casify_word (CASE_DOWN, arg, buffer);
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277 }
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278
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20
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279 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
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280 Capitalize the following word (or ARG words), moving over.
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281 This gives the word(s) a first character in upper case
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282 and the rest lower case.
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283 With negative argument, capitalize previous words but do not move.
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284 Optional second arg BUFFER defaults to the current buffer.
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20
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285 */
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286 (arg, buffer))
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0
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287 {
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288 /* This function can GC */
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183
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289 return casify_word (CASE_CAPITALIZE, arg, buffer);
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290 }
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291
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292
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293 void
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294 syms_of_casefiddle (void)
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295 {
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20
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296 DEFSUBR (Fupcase);
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297 DEFSUBR (Fdowncase);
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298 DEFSUBR (Fcapitalize);
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299 DEFSUBR (Fupcase_initials);
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300 DEFSUBR (Fupcase_region);
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301 DEFSUBR (Fdowncase_region);
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302 DEFSUBR (Fcapitalize_region);
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303 DEFSUBR (Fupcase_initials_region);
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304 DEFSUBR (Fupcase_word);
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305 DEFSUBR (Fdowncase_word);
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306 DEFSUBR (Fcapitalize_word);
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0
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307 }
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