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5191 | serge | 1 | /* |
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3 | Copyright (C) 2000, 2001, 2002, 2003, 2004, |
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4 | 2005 Free Software Foundation, Inc. |
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5 | Contributed by Zack Weinberg |
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6 | |||
7 | This file is part of the libiberty library. |
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8 | Libiberty is free software; you can redistribute it and/or |
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9 | modify it under the terms of the GNU Library General Public |
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10 | License as published by the Free Software Foundation; either |
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11 | version 2 of the License, or (at your option) any later version. |
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12 | |||
13 | Libiberty is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | Library General Public License for more details. |
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17 | |||
18 | You should have received a copy of the GNU Library General Public |
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19 | License along with libiberty; see the file COPYING.LIB. If |
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20 | not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
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21 | Boston, MA 02110-1301, USA. */ |
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22 | |||
23 | /* |
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24 | |||
25 | @defvr Extension HOST_CHARSET |
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26 | This macro indicates the basic character set and encoding used by the |
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27 | host: more precisely, the encoding used for character constants in |
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28 | preprocessor @samp{#if} statements (the C "execution character set"). |
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29 | It is defined by @file{safe-ctype.h}, and will be an integer constant |
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30 | with one of the following values: |
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31 | |||
32 | @ftable @code |
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33 | @item HOST_CHARSET_UNKNOWN |
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34 | The host character set is unknown - that is, not one of the next two |
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35 | possibilities. |
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36 | |||
37 | @item HOST_CHARSET_ASCII |
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38 | The host character set is ASCII. |
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39 | |||
40 | @item HOST_CHARSET_EBCDIC |
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41 | The host character set is some variant of EBCDIC. (Only one of the |
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42 | nineteen EBCDIC varying characters is tested; exercise caution.) |
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43 | @end ftable |
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44 | @end defvr |
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45 | |||
46 | @deffn Extension ISALPHA (@var{c}) |
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47 | @deffnx Extension ISALNUM (@var{c}) |
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48 | @deffnx Extension ISBLANK (@var{c}) |
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49 | @deffnx Extension ISCNTRL (@var{c}) |
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50 | @deffnx Extension ISDIGIT (@var{c}) |
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51 | @deffnx Extension ISGRAPH (@var{c}) |
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52 | @deffnx Extension ISLOWER (@var{c}) |
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53 | @deffnx Extension ISPRINT (@var{c}) |
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54 | @deffnx Extension ISPUNCT (@var{c}) |
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55 | @deffnx Extension ISSPACE (@var{c}) |
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56 | @deffnx Extension ISUPPER (@var{c}) |
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57 | @deffnx Extension ISXDIGIT (@var{c}) |
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58 | |||
59 | These twelve macros are defined by @file{safe-ctype.h}. Each has the |
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60 | same meaning as the corresponding macro (with name in lowercase) |
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61 | defined by the standard header @file{ctype.h}. For example, |
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62 | @code{ISALPHA} returns true for alphabetic characters and false for |
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63 | others. However, there are two differences between these macros and |
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64 | those provided by @file{ctype.h}: |
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65 | |||
66 | @itemize @bullet |
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67 | @item These macros are guaranteed to have well-defined behavior for all |
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68 | values representable by @code{signed char} and @code{unsigned char}, and |
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69 | for @code{EOF}. |
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70 | |||
71 | @item These macros ignore the current locale; they are true for these |
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72 | fixed sets of characters: |
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73 | @multitable {@code{XDIGIT}} {yada yada yada yada yada yada yada yada} |
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74 | @item @code{ALPHA} @tab @kbd{A-Za-z} |
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75 | @item @code{ALNUM} @tab @kbd{A-Za-z0-9} |
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76 | @item @code{BLANK} @tab @kbd{space tab} |
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77 | @item @code{CNTRL} @tab @code{!PRINT} |
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78 | @item @code{DIGIT} @tab @kbd{0-9} |
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79 | @item @code{GRAPH} @tab @code{ALNUM || PUNCT} |
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80 | @item @code{LOWER} @tab @kbd{a-z} |
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81 | @item @code{PRINT} @tab @code{GRAPH ||} @kbd{space} |
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82 | @item @code{PUNCT} @tab @kbd{`~!@@#$%^&*()_-=+[@{]@}\|;:'",<.>/?} |
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83 | @item @code{SPACE} @tab @kbd{space tab \n \r \f \v} |
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84 | @item @code{UPPER} @tab @kbd{A-Z} |
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85 | @item @code{XDIGIT} @tab @kbd{0-9A-Fa-f} |
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86 | @end multitable |
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87 | |||
88 | Note that, if the host character set is ASCII or a superset thereof, |
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89 | all these macros will return false for all values of @code{char} outside |
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90 | the range of 7-bit ASCII. In particular, both ISPRINT and ISCNTRL return |
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91 | false for characters with numeric values from 128 to 255. |
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92 | @end itemize |
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93 | @end deffn |
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94 | |||
95 | @deffn Extension ISIDNUM (@var{c}) |
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96 | @deffnx Extension ISIDST (@var{c}) |
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97 | @deffnx Extension IS_VSPACE (@var{c}) |
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98 | @deffnx Extension IS_NVSPACE (@var{c}) |
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99 | @deffnx Extension IS_SPACE_OR_NUL (@var{c}) |
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100 | @deffnx Extension IS_ISOBASIC (@var{c}) |
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101 | These six macros are defined by @file{safe-ctype.h} and provide |
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102 | additional character classes which are useful when doing lexical |
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103 | analysis of C or similar languages. They are true for the following |
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104 | sets of characters: |
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105 | |||
106 | @multitable {@code{SPACE_OR_NUL}} {yada yada yada yada yada yada yada yada} |
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107 | @item @code{IDNUM} @tab @kbd{A-Za-z0-9_} |
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108 | @item @code{IDST} @tab @kbd{A-Za-z_} |
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109 | @item @code{VSPACE} @tab @kbd{\r \n} |
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110 | @item @code{NVSPACE} @tab @kbd{space tab \f \v \0} |
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111 | @item @code{SPACE_OR_NUL} @tab @code{VSPACE || NVSPACE} |
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112 | @item @code{ISOBASIC} @tab @code{VSPACE || NVSPACE || PRINT} |
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113 | @end multitable |
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114 | @end deffn |
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115 | |||
116 | */ |
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117 | |||
118 | #include "ansidecl.h" |
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119 | #include |
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120 | #include |
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121 | |||
122 | #if EOF != -1 |
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123 | #error " |
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124 | #endif |
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125 | |||
126 | /* Shorthand */ |
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127 | #define bl _sch_isblank |
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128 | #define cn _sch_iscntrl |
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129 | #define di _sch_isdigit |
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130 | #define is _sch_isidst |
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131 | #define lo _sch_islower |
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132 | #define nv _sch_isnvsp |
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133 | #define pn _sch_ispunct |
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134 | #define pr _sch_isprint |
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135 | #define sp _sch_isspace |
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136 | #define up _sch_isupper |
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137 | #define vs _sch_isvsp |
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138 | #define xd _sch_isxdigit |
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139 | |||
140 | /* Masks. */ |
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141 | #define L (const unsigned short) (lo|is |pr) /* lower case letter */ |
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142 | #define XL (const unsigned short) (lo|is|xd|pr) /* lowercase hex digit */ |
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143 | #define U (const unsigned short) (up|is |pr) /* upper case letter */ |
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144 | #define XU (const unsigned short) (up|is|xd|pr) /* uppercase hex digit */ |
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145 | #define D (const unsigned short) (di |xd|pr) /* decimal digit */ |
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146 | #define P (const unsigned short) (pn |pr) /* punctuation */ |
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147 | #define _ (const unsigned short) (pn|is |pr) /* underscore */ |
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148 | |||
149 | #define C (const unsigned short) ( cn) /* control character */ |
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150 | #define Z (const unsigned short) (nv |cn) /* NUL */ |
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151 | #define M (const unsigned short) (nv|sp |cn) /* cursor movement: \f \v */ |
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152 | #define V (const unsigned short) (vs|sp |cn) /* vertical space: \r \n */ |
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153 | #define T (const unsigned short) (nv|sp|bl|cn) /* tab */ |
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154 | #define S (const unsigned short) (nv|sp|bl|pr) /* space */ |
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155 | |||
156 | /* Are we ASCII? */ |
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157 | #if HOST_CHARSET == HOST_CHARSET_ASCII |
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158 | |||
159 | const unsigned short _sch_istable[256] = |
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160 | { |
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161 | Z, C, C, C, C, C, C, C, /* NUL SOH STX ETX EOT ENQ ACK BEL */ |
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162 | C, T, V, M, M, V, C, C, /* BS HT LF VT FF CR SO SI */ |
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163 | C, C, C, C, C, C, C, C, /* DLE DC1 DC2 DC3 DC4 NAK SYN ETB */ |
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164 | C, C, C, C, C, C, C, C, /* CAN EM SUB ESC FS GS RS US */ |
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165 | S, P, P, P, P, P, P, P, /* SP ! " # $ % & ' */ |
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166 | P, P, P, P, P, P, P, P, /* ( ) * + , - . / */ |
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167 | D, D, D, D, D, D, D, D, /* 0 1 2 3 4 5 6 7 */ |
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168 | D, D, P, P, P, P, P, P, /* 8 9 : ; < = > ? */ |
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169 | P, XU, XU, XU, XU, XU, XU, U, /* @ A B C D E F G */ |
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170 | U, U, U, U, U, U, U, U, /* H I J K L M N O */ |
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171 | U, U, U, U, U, U, U, U, /* P Q R S T U V W */ |
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172 | U, U, U, P, P, P, P, _, /* X Y Z [ \ ] ^ _ */ |
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173 | P, XL, XL, XL, XL, XL, XL, L, /* ` a b c d e f g */ |
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174 | L, L, L, L, L, L, L, L, /* h i j k l m n o */ |
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175 | L, L, L, L, L, L, L, L, /* p q r s t u v w */ |
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176 | L, L, L, P, P, P, P, C, /* x y z { | } ~ DEL */ |
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177 | |||
178 | /* high half of unsigned char is locale-specific, so all tests are |
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179 | false in "C" locale */ |
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180 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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181 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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182 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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183 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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184 | |||
185 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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186 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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187 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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188 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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189 | }; |
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190 | |||
191 | const unsigned char _sch_tolower[256] = |
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192 | { |
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193 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
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194 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
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195 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
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196 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
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197 | 64, |
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198 | |||
199 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
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200 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
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201 | |||
202 | 91, 92, 93, 94, 95, 96, |
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203 | |||
204 | 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', |
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205 | 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', |
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206 | |||
207 | 123,124,125,126,127, |
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208 | |||
209 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
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210 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
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211 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
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212 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
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213 | |||
214 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
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215 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
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216 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
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217 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
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218 | }; |
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219 | |||
220 | const unsigned char _sch_toupper[256] = |
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221 | { |
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222 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, |
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223 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, |
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224 | 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, |
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225 | 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
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226 | 64, |
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227 | |||
228 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
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229 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
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230 | |||
231 | 91, 92, 93, 94, 95, 96, |
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232 | |||
233 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', |
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234 | 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
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235 | |||
236 | 123,124,125,126,127, |
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237 | |||
238 | 128,129,130,131, 132,133,134,135, 136,137,138,139, 140,141,142,143, |
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239 | 144,145,146,147, 148,149,150,151, 152,153,154,155, 156,157,158,159, |
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240 | 160,161,162,163, 164,165,166,167, 168,169,170,171, 172,173,174,175, |
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241 | 176,177,178,179, 180,181,182,183, 184,185,186,187, 188,189,190,191, |
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242 | |||
243 | 192,193,194,195, 196,197,198,199, 200,201,202,203, 204,205,206,207, |
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244 | 208,209,210,211, 212,213,214,215, 216,217,218,219, 220,221,222,223, |
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245 | 224,225,226,227, 228,229,230,231, 232,233,234,235, 236,237,238,239, |
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246 | 240,241,242,243, 244,245,246,247, 248,249,250,251, 252,253,254,255, |
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247 | }; |
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248 | |||
249 | #else |
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250 | # if HOST_CHARSET == HOST_CHARSET_EBCDIC |
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251 | #error "FIXME: write tables for EBCDIC" |
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252 | # else |
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253 | #error "Unrecognized host character set" |
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254 | # endif |
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255 | #endif> |