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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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21 /* Synched up with: FSF 19.30. */
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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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34 casify_object (struct buffer *buf, enum case_action flag, Lisp_Object obj)
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35 {
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36 REGISTER Emchar c;
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37 REGISTER Charcount i, len;
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38 REGISTER int inword = flag == CASE_DOWN;
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39 Lisp_Object syntax_table = buf->syntax_table;
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40
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41 while (1)
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42 {
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43 if (CHAR_OR_CHAR_INTP (obj))
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44 {
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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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48 {
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49 if (inword)
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50 obj = make_char (DOWNCASE (buf, c));
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51 else if (!UPPERCASEP (buf, c))
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52 obj = make_char (UPCASE1 (buf, c));
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53 }
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54 return obj;
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55 }
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56 if (STRINGP (obj))
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57 {
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58 obj = Fcopy_sequence (obj);
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59 len = string_char_length (XSTRING (obj));
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60 for (i = 0; i < len; i++)
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61 {
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62 c = string_char (XSTRING (obj), i);
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63 if (inword)
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64 c = DOWNCASE (buf, c);
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65 else if (!UPPERCASEP (buf, c)
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66 && (!inword || flag != CASE_CAPITALIZE_UP))
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67 c = UPCASE1 (buf, c);
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68 set_string_char (XSTRING (obj), i, c);
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69 if ((int) flag >= (int) CASE_CAPITALIZE)
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70 inword = WORD_SYNTAX_P (syntax_table, c);
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71 }
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72 return obj;
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73 }
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74 obj = wrong_type_argument (Qchar_or_string_p, obj);
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75 }
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76 }
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77
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20
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78 DEFUN ("upcase", Fupcase, 1, 2, 0, /*
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79 Convert argument to upper case and return that.
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80 The argument may be a character or string. The result has the same type.
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81 The argument object is not altered--the value is a copy.
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82 See also `capitalize', `downcase' and `upcase-initials'.
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83 Optional second arg BUFFER specifies which buffer's case tables to use,
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84 and defaults to the current buffer.
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20
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85 */
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86 (obj, buffer))
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0
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87 {
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88 return casify_object (decode_buffer (buffer, 0), CASE_UP, obj);
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89 }
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90
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91 DEFUN ("downcase", Fdowncase, 1, 2, 0, /*
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92 Convert argument to lower case and return that.
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93 The argument may be a character or string. The result has the same type.
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94 The argument object is not altered--the value is a copy.
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95 Optional second arg BUFFER specifies which buffer's case tables to use,
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96 and defaults to the current buffer.
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20
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97 */
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98 (obj, buffer))
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99 {
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100 return casify_object (decode_buffer (buffer, 0), CASE_DOWN, obj);
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101 }
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102
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103 DEFUN ("capitalize", Fcapitalize, 1, 2, 0, /*
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104 Convert argument to capitalized form and return that.
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105 This means that each word's first character is upper case
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106 and the rest is lower case.
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107 The argument may be a character or string. The result has the same type.
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108 The argument object is not altered--the value is a copy.
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109 Optional second arg BUFFER specifies which buffer's case tables to use,
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110 and defaults to the current buffer.
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111 */
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112 (obj, buffer))
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113 {
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114 return casify_object (decode_buffer (buffer, 0), CASE_CAPITALIZE, obj);
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115 }
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116
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117 /* Like Fcapitalize but change only the initials. */
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118
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119 DEFUN ("upcase-initials", Fupcase_initials, 1, 2, 0, /*
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120 Convert the initial of each word in the argument to upper case.
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121 Do not change the other letters of each word.
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122 The argument may be a character or string. The result has the same type.
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123 The argument object is not altered--the value is a copy.
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124 Optional second arg BUFFER specifies which buffer's case tables to use,
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125 and defaults to the current buffer.
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126 */
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127 (obj, buffer))
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128 {
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129 return casify_object (decode_buffer (buffer, 0), CASE_CAPITALIZE_UP, obj);
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130 }
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131
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132 /* flag is CASE_UP, CASE_DOWN or CASE_CAPITALIZE or CASE_CAPITALIZE_UP.
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133 b and e specify range of buffer to operate on. */
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134
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135 static void
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136 casify_region (struct buffer *buf, enum case_action flag, Lisp_Object b,
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137 Lisp_Object e)
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138 {
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139 /* This function can GC */
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140 REGISTER Bufpos i;
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141 Bufpos start, end;
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142 REGISTER Emchar c;
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143 REGISTER int inword = flag == CASE_DOWN;
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144 Lisp_Object syntax_table = buf->syntax_table;
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145 int mccount;
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146
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147 if (EQ (b, e))
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148 /* Not modifying because nothing marked */
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149 return;
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150
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151 get_buffer_range_char (buf, b, e, &start, &end, 0);
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152
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153 mccount = begin_multiple_change (buf, start, end);
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154 record_change (buf, start, end - start);
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155 BUF_MODIFF (buf)++;
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156
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157 for (i = start; i < end; i++)
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158 {
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159 c = BUF_FETCH_CHAR (buf, i);
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160 if (inword && flag != CASE_CAPITALIZE_UP)
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161 c = DOWNCASE (buf, c);
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162 else if (!UPPERCASEP (buf, c)
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163 && (!inword || flag != CASE_CAPITALIZE_UP))
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164 c = UPCASE1 (buf, c);
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165
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166 buffer_replace_char (buf, i, c, 1, (i == start));
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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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175 DEFUN ("upcase-region", Fupcase_region, 2, 3, "r", /*
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176 Convert the region to upper case. In programs, wants two arguments.
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177 These arguments specify the starting and ending character numbers of
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178 the region to operate on. When used as a command, the text between
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179 point and the mark is operated on.
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180 See also `capitalize-region'.
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181 Optional third arg BUFFER defaults to the current buffer.
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182 */
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183 (b, e, buffer))
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0
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184 {
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185 /* This function can GC */
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186 casify_region (decode_buffer (buffer, 1), CASE_UP, b, e);
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187 return Qnil;
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188 }
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189
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190 DEFUN ("downcase-region", Fdowncase_region, 2, 3, "r", /*
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191 Convert the region to lower case. In programs, wants two arguments.
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192 These arguments specify the starting and ending character numbers of
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193 the region to operate on. When used as a command, the text between
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194 point and the mark is operated on.
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195 Optional third arg BUFFER defaults to the current buffer.
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196 */
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197 (b, e, buffer))
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198 {
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199 /* This function can GC */
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200 casify_region (decode_buffer (buffer, 1), CASE_DOWN, b, e);
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201 return Qnil;
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202 }
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203
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204 DEFUN ("capitalize-region", Fcapitalize_region, 2, 3, "r", /*
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205 Convert the region to capitalized form.
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206 Capitalized form means each word's first character is upper case
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207 and the rest of it is lower case.
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208 In programs, give two arguments, the starting and ending
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209 character positions to operate on.
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210 Optional third arg BUFFER defaults to the current buffer.
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211 */
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212 (b, e, buffer))
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213 {
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214 /* This function can GC */
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215 casify_region (decode_buffer (buffer, 1), CASE_CAPITALIZE, b, e);
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216 return Qnil;
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217 }
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218
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219 /* Like Fcapitalize_region but change only the initials. */
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220
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221 DEFUN ("upcase-initials-region", Fupcase_initials_region, 2, 3, "r", /*
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222 Upcase the initial of each word in the region.
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223 Subsequent letters of each word are not changed.
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224 In programs, give two arguments, the starting and ending
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225 character positions to operate on.
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226 Optional third arg BUFFER defaults to the current buffer.
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227 */
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228 (b, e, buffer))
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229 {
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230 casify_region (decode_buffer (buffer, 1), CASE_CAPITALIZE_UP, b, e);
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231 return Qnil;
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232 }
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233
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234
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235 static Lisp_Object
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236 operate_on_word (struct buffer *buf, Lisp_Object arg, int *newpoint)
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237 {
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238 Bufpos farend;
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239
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240 CHECK_INT (arg);
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241 farend = scan_words (buf, BUF_PT (buf), XINT (arg));
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242 if (!farend)
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243 farend = XINT (arg) > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
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244
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245 *newpoint = ((BUF_PT (buf) > farend) ? BUF_PT (buf) : farend);
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246 return (make_int (farend));
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247 }
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248
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249 DEFUN ("upcase-word", Fupcase_word, 1, 2, "p", /*
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250 Convert following word (or ARG words) to upper case, moving over.
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251 With negative argument, convert previous words but do not move.
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252 See also `capitalize-word'.
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253 Optional second arg BUFFER defaults to the current buffer.
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254 */
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255 (arg, buffer))
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256 {
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257 /* This function can GC */
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258 Lisp_Object beg, end;
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259 Bufpos newpoint;
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260 struct buffer *buf = decode_buffer (buffer, 1);
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261
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262 beg = make_int (BUF_PT (buf));
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263 end = operate_on_word (buf, arg, &newpoint);
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264 casify_region (buf, CASE_UP, beg, end);
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265 BUF_SET_PT (buf, newpoint);
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266 return Qnil;
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267 }
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268
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269 DEFUN ("downcase-word", Fdowncase_word, 1, 2, "p", /*
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270 Convert following word (or ARG words) to lower case, moving over.
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271 With negative argument, convert previous words but do not move.
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272 Optional second arg BUFFER defaults to the current buffer.
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273 */
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274 (arg, buffer))
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275 {
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276 /* This function can GC */
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277 Lisp_Object beg, end;
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278 Bufpos newpoint;
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279 struct buffer *buf = decode_buffer (buffer, 1);
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280
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281 beg = make_int (BUF_PT (buf));
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282 end = operate_on_word (buf, arg, &newpoint);
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283 casify_region (buf, CASE_DOWN, beg, end);
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284 BUF_SET_PT (buf, newpoint);
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285 return Qnil;
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286 }
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287
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288 DEFUN ("capitalize-word", Fcapitalize_word, 1, 2, "p", /*
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289 Capitalize the following word (or ARG words), moving over.
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290 This gives the word(s) a first character in upper case
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291 and the rest lower case.
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292 With negative argument, capitalize previous words but do not move.
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293 Optional second arg BUFFER defaults to the current buffer.
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294 */
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295 (arg, buffer))
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0
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296 {
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297 /* This function can GC */
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298 Lisp_Object beg, end;
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299 Bufpos newpoint;
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300 struct buffer *buf = decode_buffer (buffer, 1);
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301
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302 beg = make_int (BUF_PT (buf));
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303 end = operate_on_word (buf, arg, &newpoint);
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304 casify_region (buf, CASE_CAPITALIZE, beg, end);
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305 BUF_SET_PT (buf, newpoint);
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306 return Qnil;
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307 }
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308
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309
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310 void
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311 syms_of_casefiddle (void)
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312 {
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20
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313 DEFSUBR (Fupcase);
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314 DEFSUBR (Fdowncase);
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315 DEFSUBR (Fcapitalize);
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316 DEFSUBR (Fupcase_initials);
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317 DEFSUBR (Fupcase_region);
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318 DEFSUBR (Fdowncase_region);
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319 DEFSUBR (Fcapitalize_region);
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320 DEFSUBR (Fupcase_initials_region);
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321 DEFSUBR (Fupcase_word);
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322 DEFSUBR (Fdowncase_word);
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323 DEFSUBR (Fcapitalize_word);
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0
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324 }
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