1 | /* doop.c |
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2 | * |
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3 | * Copyright (c) 1991-2000, Larry Wall |
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4 | * |
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5 | * You may distribute under the terms of either the GNU General Public |
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6 | * License or the Artistic License, as specified in the README file. |
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7 | * |
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8 | */ |
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9 | |
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10 | /* |
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11 | * "'So that was the job I felt I had to do when I started,' thought Sam." |
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12 | */ |
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13 | |
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14 | #include "EXTERN.h" |
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15 | #define PERL_IN_DOOP_C |
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16 | #include "perl.h" |
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17 | |
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18 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
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19 | #include <signal.h> |
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20 | #endif |
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21 | |
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22 | STATIC I32 |
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23 | S_do_trans_CC_simple(pTHX_ SV *sv) |
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24 | { |
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25 | dTHR; |
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26 | U8 *s; |
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27 | U8 *send; |
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28 | I32 matches = 0; |
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29 | STRLEN len; |
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30 | short *tbl; |
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31 | I32 ch; |
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32 | |
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33 | tbl = (short*)cPVOP->op_pv; |
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34 | if (!tbl) |
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35 | Perl_croak(aTHX_ "panic: do_trans"); |
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36 | |
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37 | s = (U8*)SvPV(sv, len); |
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38 | send = s + len; |
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39 | |
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40 | while (s < send) { |
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41 | if ((ch = tbl[*s]) >= 0) { |
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42 | matches++; |
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43 | *s = ch; |
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44 | } |
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45 | s++; |
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46 | } |
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47 | SvSETMAGIC(sv); |
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48 | |
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49 | return matches; |
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50 | } |
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51 | |
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52 | STATIC I32 |
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53 | S_do_trans_CC_count(pTHX_ SV *sv) |
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54 | { |
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55 | dTHR; |
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56 | U8 *s; |
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57 | U8 *send; |
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58 | I32 matches = 0; |
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59 | STRLEN len; |
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60 | short *tbl; |
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61 | |
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62 | tbl = (short*)cPVOP->op_pv; |
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63 | if (!tbl) |
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64 | Perl_croak(aTHX_ "panic: do_trans"); |
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65 | |
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66 | s = (U8*)SvPV(sv, len); |
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67 | send = s + len; |
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68 | |
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69 | while (s < send) { |
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70 | if (tbl[*s] >= 0) |
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71 | matches++; |
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72 | s++; |
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73 | } |
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74 | |
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75 | return matches; |
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76 | } |
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77 | |
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78 | STATIC I32 |
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79 | S_do_trans_CC_complex(pTHX_ SV *sv) |
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80 | { |
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81 | dTHR; |
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82 | U8 *s; |
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83 | U8 *send; |
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84 | U8 *d; |
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85 | I32 matches = 0; |
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86 | STRLEN len; |
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87 | short *tbl; |
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88 | I32 ch; |
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89 | |
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90 | tbl = (short*)cPVOP->op_pv; |
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91 | if (!tbl) |
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92 | Perl_croak(aTHX_ "panic: do_trans"); |
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93 | |
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94 | s = (U8*)SvPV(sv, len); |
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95 | send = s + len; |
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96 | |
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97 | d = s; |
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98 | if (PL_op->op_private & OPpTRANS_SQUASH) { |
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99 | U8* p = send; |
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100 | |
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101 | while (s < send) { |
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102 | if ((ch = tbl[*s]) >= 0) { |
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103 | *d = ch; |
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104 | matches++; |
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105 | if (p == d - 1 && *p == *d) |
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106 | matches--; |
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107 | else |
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108 | p = d++; |
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109 | } |
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110 | else if (ch == -1) /* -1 is unmapped character */ |
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111 | *d++ = *s; /* -2 is delete character */ |
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112 | s++; |
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113 | } |
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114 | } |
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115 | else { |
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116 | while (s < send) { |
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117 | if ((ch = tbl[*s]) >= 0) { |
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118 | *d = ch; |
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119 | matches++; |
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120 | d++; |
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121 | } |
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122 | else if (ch == -1) /* -1 is unmapped character */ |
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123 | *d++ = *s; /* -2 is delete character */ |
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124 | s++; |
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125 | } |
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126 | } |
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127 | matches += send - d; /* account for disappeared chars */ |
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128 | *d = '\0'; |
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129 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
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130 | SvSETMAGIC(sv); |
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131 | |
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132 | return matches; |
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133 | } |
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134 | |
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135 | STATIC I32 |
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136 | S_do_trans_UU_simple(pTHX_ SV *sv) |
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137 | { |
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138 | dTHR; |
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139 | U8 *s; |
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140 | U8 *send; |
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141 | U8 *d; |
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142 | I32 matches = 0; |
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143 | STRLEN len; |
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144 | |
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145 | SV* rv = (SV*)cSVOP->op_sv; |
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146 | HV* hv = (HV*)SvRV(rv); |
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147 | SV** svp = hv_fetch(hv, "NONE", 4, FALSE); |
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148 | UV none = svp ? SvUV(*svp) : 0x7fffffff; |
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149 | UV extra = none + 1; |
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150 | UV final; |
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151 | UV uv; |
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152 | |
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153 | s = (U8*)SvPV(sv, len); |
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154 | send = s + len; |
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155 | |
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156 | svp = hv_fetch(hv, "FINAL", 5, FALSE); |
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157 | if (svp) |
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158 | final = SvUV(*svp); |
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159 | |
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160 | d = s; |
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161 | while (s < send) { |
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162 | if ((uv = swash_fetch(rv, s)) < none) { |
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163 | s += UTF8SKIP(s); |
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164 | matches++; |
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165 | d = uv_to_utf8(d, uv); |
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166 | } |
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167 | else if (uv == none) { |
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168 | int i; |
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169 | for (i = UTF8SKIP(s); i; i--) |
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170 | *d++ = *s++; |
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171 | } |
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172 | else if (uv == extra) { |
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173 | s += UTF8SKIP(s); |
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174 | matches++; |
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175 | d = uv_to_utf8(d, final); |
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176 | } |
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177 | else |
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178 | s += UTF8SKIP(s); |
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179 | } |
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180 | *d = '\0'; |
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181 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
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182 | SvSETMAGIC(sv); |
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183 | |
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184 | return matches; |
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185 | } |
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186 | |
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187 | STATIC I32 |
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188 | S_do_trans_UU_count(pTHX_ SV *sv) |
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189 | { |
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190 | dTHR; |
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191 | U8 *s; |
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192 | U8 *send; |
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193 | I32 matches = 0; |
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194 | STRLEN len; |
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195 | |
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196 | SV* rv = (SV*)cSVOP->op_sv; |
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197 | HV* hv = (HV*)SvRV(rv); |
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198 | SV** svp = hv_fetch(hv, "NONE", 4, FALSE); |
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199 | UV none = svp ? SvUV(*svp) : 0x7fffffff; |
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200 | UV uv; |
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201 | |
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202 | s = (U8*)SvPV(sv, len); |
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203 | send = s + len; |
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204 | |
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205 | while (s < send) { |
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206 | if ((uv = swash_fetch(rv, s)) < none) |
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207 | matches++; |
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208 | s += UTF8SKIP(s); |
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209 | } |
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210 | |
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211 | return matches; |
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212 | } |
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213 | |
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214 | STATIC I32 |
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215 | S_do_trans_UC_simple(pTHX_ SV *sv) |
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216 | { |
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217 | dTHR; |
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218 | U8 *s; |
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219 | U8 *send; |
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220 | U8 *d; |
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221 | I32 matches = 0; |
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222 | STRLEN len; |
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223 | |
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224 | SV* rv = (SV*)cSVOP->op_sv; |
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225 | HV* hv = (HV*)SvRV(rv); |
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226 | SV** svp = hv_fetch(hv, "NONE", 4, FALSE); |
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227 | UV none = svp ? SvUV(*svp) : 0x7fffffff; |
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228 | UV extra = none + 1; |
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229 | UV final; |
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230 | UV uv; |
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231 | |
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232 | s = (U8*)SvPV(sv, len); |
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233 | send = s + len; |
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234 | |
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235 | svp = hv_fetch(hv, "FINAL", 5, FALSE); |
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236 | if (svp) |
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237 | final = SvUV(*svp); |
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238 | |
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239 | d = s; |
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240 | while (s < send) { |
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241 | if ((uv = swash_fetch(rv, s)) < none) { |
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242 | s += UTF8SKIP(s); |
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243 | matches++; |
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244 | *d++ = (U8)uv; |
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245 | } |
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246 | else if (uv == none) { |
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247 | I32 ulen; |
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248 | uv = utf8_to_uv(s, &ulen); |
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249 | s += ulen; |
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250 | *d++ = (U8)uv; |
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251 | } |
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252 | else if (uv == extra) { |
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253 | s += UTF8SKIP(s); |
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254 | matches++; |
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255 | *d++ = (U8)final; |
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256 | } |
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257 | else |
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258 | s += UTF8SKIP(s); |
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259 | } |
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260 | *d = '\0'; |
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261 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
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262 | SvSETMAGIC(sv); |
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263 | |
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264 | return matches; |
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265 | } |
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266 | |
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267 | STATIC I32 |
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268 | S_do_trans_CU_simple(pTHX_ SV *sv) |
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269 | { |
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270 | dTHR; |
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271 | U8 *s; |
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272 | U8 *send; |
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273 | U8 *d; |
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274 | U8 *dst; |
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275 | I32 matches = 0; |
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276 | STRLEN len; |
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277 | |
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278 | SV* rv = (SV*)cSVOP->op_sv; |
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279 | HV* hv = (HV*)SvRV(rv); |
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280 | SV** svp = hv_fetch(hv, "NONE", 4, FALSE); |
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281 | UV none = svp ? SvUV(*svp) : 0x7fffffff; |
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282 | UV extra = none + 1; |
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283 | UV final; |
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284 | UV uv; |
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285 | U8 tmpbuf[UTF8_MAXLEN]; |
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286 | I32 bits = 16; |
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287 | |
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288 | s = (U8*)SvPV(sv, len); |
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289 | send = s + len; |
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290 | |
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291 | svp = hv_fetch(hv, "BITS", 4, FALSE); |
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292 | if (svp) |
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293 | bits = (I32)SvIV(*svp); |
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294 | |
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295 | svp = hv_fetch(hv, "FINAL", 5, FALSE); |
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296 | if (svp) |
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297 | final = SvUV(*svp); |
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298 | |
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299 | Newz(801, d, len * (bits >> 3) + 1, U8); |
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300 | dst = d; |
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301 | |
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302 | while (s < send) { |
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303 | uv = *s++; |
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304 | if (uv < 0x80) |
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305 | tmpbuf[0] = uv; |
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306 | else { |
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307 | tmpbuf[0] = (( uv >> 6) | 0xc0); |
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308 | tmpbuf[1] = (( uv & 0x3f) | 0x80); |
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309 | } |
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310 | |
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311 | if ((uv = swash_fetch(rv, tmpbuf)) < none) { |
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312 | matches++; |
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313 | d = uv_to_utf8(d, uv); |
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314 | } |
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315 | else if (uv == none) |
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316 | d = uv_to_utf8(d, s[-1]); |
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317 | else if (uv == extra) { |
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318 | matches++; |
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319 | d = uv_to_utf8(d, final); |
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320 | } |
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321 | } |
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322 | *d = '\0'; |
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323 | sv_usepvn_mg(sv, (char*)dst, d - dst); |
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324 | |
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325 | return matches; |
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326 | } |
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327 | |
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328 | /* utf-8 to latin-1 */ |
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329 | |
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330 | STATIC I32 |
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331 | S_do_trans_UC_trivial(pTHX_ SV *sv) |
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332 | { |
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333 | dTHR; |
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334 | U8 *s; |
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335 | U8 *send; |
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336 | U8 *d; |
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337 | STRLEN len; |
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338 | |
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339 | s = (U8*)SvPV(sv, len); |
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340 | send = s + len; |
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341 | |
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342 | d = s; |
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343 | while (s < send) { |
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344 | if (*s < 0x80) |
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345 | *d++ = *s++; |
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346 | else { |
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347 | I32 ulen; |
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348 | UV uv = utf8_to_uv(s, &ulen); |
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349 | s += ulen; |
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350 | *d++ = (U8)uv; |
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351 | } |
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352 | } |
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353 | *d = '\0'; |
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354 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
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355 | SvSETMAGIC(sv); |
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356 | |
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357 | return SvCUR(sv); |
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358 | } |
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359 | |
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360 | /* latin-1 to utf-8 */ |
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361 | |
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362 | STATIC I32 |
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363 | S_do_trans_CU_trivial(pTHX_ SV *sv) |
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364 | { |
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365 | dTHR; |
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366 | U8 *s; |
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367 | U8 *send; |
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368 | U8 *d; |
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369 | U8 *dst; |
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370 | I32 matches; |
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371 | STRLEN len; |
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372 | |
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373 | s = (U8*)SvPV(sv, len); |
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374 | send = s + len; |
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375 | |
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376 | Newz(801, d, len * 2 + 1, U8); |
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377 | dst = d; |
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378 | |
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379 | matches = send - s; |
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380 | |
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381 | while (s < send) { |
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382 | if (*s < 0x80) |
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383 | *d++ = *s++; |
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384 | else { |
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385 | UV uv = *s++; |
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386 | *d++ = (( uv >> 6) | 0xc0); |
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387 | *d++ = (( uv & 0x3f) | 0x80); |
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388 | } |
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389 | } |
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390 | *d = '\0'; |
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391 | sv_usepvn_mg(sv, (char*)dst, d - dst); |
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392 | |
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393 | return matches; |
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394 | } |
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395 | |
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396 | STATIC I32 |
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397 | S_do_trans_UU_complex(pTHX_ SV *sv) |
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398 | { |
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399 | dTHR; |
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400 | U8 *s; |
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401 | U8 *send; |
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402 | U8 *d; |
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403 | I32 matches = 0; |
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404 | I32 squash = PL_op->op_private & OPpTRANS_SQUASH; |
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405 | I32 from_utf = PL_op->op_private & OPpTRANS_FROM_UTF; |
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406 | I32 to_utf = PL_op->op_private & OPpTRANS_TO_UTF; |
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407 | I32 del = PL_op->op_private & OPpTRANS_DELETE; |
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408 | SV* rv = (SV*)cSVOP->op_sv; |
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409 | HV* hv = (HV*)SvRV(rv); |
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410 | SV** svp = hv_fetch(hv, "NONE", 4, FALSE); |
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411 | UV none = svp ? SvUV(*svp) : 0x7fffffff; |
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412 | UV extra = none + 1; |
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413 | UV final; |
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414 | UV uv; |
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415 | STRLEN len; |
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416 | U8 *dst; |
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417 | |
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418 | s = (U8*)SvPV(sv, len); |
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419 | send = s + len; |
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420 | |
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421 | svp = hv_fetch(hv, "FINAL", 5, FALSE); |
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422 | if (svp) |
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423 | final = SvUV(*svp); |
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424 | |
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425 | if (PL_op->op_private & OPpTRANS_GROWS) { |
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426 | I32 bits = 16; |
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427 | |
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428 | svp = hv_fetch(hv, "BITS", 4, FALSE); |
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429 | if (svp) |
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430 | bits = (I32)SvIV(*svp); |
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431 | |
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432 | Newz(801, d, len * (bits >> 3) + 1, U8); |
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433 | dst = d; |
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434 | } |
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435 | else { |
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436 | d = s; |
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437 | dst = 0; |
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438 | } |
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439 | |
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440 | if (squash) { |
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441 | UV puv = 0xfeedface; |
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442 | while (s < send) { |
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443 | if (from_utf) { |
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444 | uv = swash_fetch(rv, s); |
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445 | } |
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446 | else { |
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447 | U8 tmpbuf[2]; |
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448 | uv = *s++; |
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449 | if (uv < 0x80) |
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450 | tmpbuf[0] = uv; |
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451 | else { |
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452 | tmpbuf[0] = (( uv >> 6) | 0xc0); |
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453 | tmpbuf[1] = (( uv & 0x3f) | 0x80); |
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454 | } |
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455 | uv = swash_fetch(rv, tmpbuf); |
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456 | } |
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457 | if (uv < none) { |
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458 | matches++; |
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459 | if (uv != puv) { |
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460 | if (uv >= 0x80 && to_utf) |
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461 | d = uv_to_utf8(d, uv); |
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462 | else |
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463 | *d++ = (U8)uv; |
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464 | puv = uv; |
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465 | } |
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466 | if (from_utf) |
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467 | s += UTF8SKIP(s); |
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468 | continue; |
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469 | } |
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470 | else if (uv == none) { /* "none" is unmapped character */ |
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471 | if (from_utf) { |
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472 | if (*s < 0x80) |
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473 | *d++ = *s++; |
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474 | else if (to_utf) { |
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475 | int i; |
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476 | for (i = UTF8SKIP(s); i; --i) |
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477 | *d++ = *s++; |
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478 | } |
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479 | else { |
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480 | I32 ulen; |
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481 | *d++ = (U8)utf8_to_uv(s, &ulen); |
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482 | s += ulen; |
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483 | } |
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484 | } |
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485 | else { /* must be to_utf only */ |
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486 | d = uv_to_utf8(d, s[-1]); |
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487 | } |
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488 | puv = 0xfeedface; |
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489 | continue; |
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490 | } |
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491 | else if (uv == extra && !del) { |
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492 | matches++; |
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493 | if (uv != puv) { |
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494 | if (final >= 0x80 && to_utf) |
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495 | d = uv_to_utf8(d, final); |
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496 | else |
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497 | *d++ = (U8)final; |
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498 | puv = final; |
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499 | } |
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500 | if (from_utf) |
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501 | s += UTF8SKIP(s); |
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502 | continue; |
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503 | } |
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504 | matches++; /* "none+1" is delete character */ |
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505 | if (from_utf) |
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506 | s += UTF8SKIP(s); |
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507 | } |
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508 | } |
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509 | else { |
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510 | while (s < send) { |
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511 | if (from_utf) { |
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512 | uv = swash_fetch(rv, s); |
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513 | } |
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514 | else { |
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515 | U8 tmpbuf[2]; |
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516 | uv = *s++; |
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517 | if (uv < 0x80) |
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518 | tmpbuf[0] = uv; |
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519 | else { |
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520 | tmpbuf[0] = (( uv >> 6) | 0xc0); |
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521 | tmpbuf[1] = (( uv & 0x3f) | 0x80); |
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522 | } |
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523 | uv = swash_fetch(rv, tmpbuf); |
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524 | } |
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525 | if (uv < none) { |
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526 | matches++; |
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527 | if (uv >= 0x80 && to_utf) |
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528 | d = uv_to_utf8(d, uv); |
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529 | else |
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530 | *d++ = (U8)uv; |
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531 | if (from_utf) |
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532 | s += UTF8SKIP(s); |
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533 | continue; |
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534 | } |
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535 | else if (uv == none) { /* "none" is unmapped character */ |
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536 | if (from_utf) { |
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537 | if (*s < 0x80) |
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538 | *d++ = *s++; |
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539 | else if (to_utf) { |
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540 | int i; |
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541 | for (i = UTF8SKIP(s); i; --i) |
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542 | *d++ = *s++; |
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543 | } |
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544 | else { |
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545 | I32 ulen; |
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546 | *d++ = (U8)utf8_to_uv(s, &ulen); |
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547 | s += ulen; |
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548 | } |
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549 | } |
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550 | else { /* must be to_utf only */ |
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551 | d = uv_to_utf8(d, s[-1]); |
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552 | } |
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553 | continue; |
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554 | } |
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555 | else if (uv == extra && !del) { |
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556 | matches++; |
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557 | if (final >= 0x80 && to_utf) |
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558 | d = uv_to_utf8(d, final); |
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559 | else |
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560 | *d++ = (U8)final; |
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561 | if (from_utf) |
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562 | s += UTF8SKIP(s); |
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563 | continue; |
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564 | } |
---|
565 | matches++; /* "none+1" is delete character */ |
---|
566 | if (from_utf) |
---|
567 | s += UTF8SKIP(s); |
---|
568 | } |
---|
569 | } |
---|
570 | if (dst) |
---|
571 | sv_usepvn(sv, (char*)dst, d - dst); |
---|
572 | else { |
---|
573 | *d = '\0'; |
---|
574 | SvCUR_set(sv, d - (U8*)SvPVX(sv)); |
---|
575 | } |
---|
576 | SvSETMAGIC(sv); |
---|
577 | |
---|
578 | return matches; |
---|
579 | } |
---|
580 | |
---|
581 | I32 |
---|
582 | Perl_do_trans(pTHX_ SV *sv) |
---|
583 | { |
---|
584 | dTHR; |
---|
585 | STRLEN len; |
---|
586 | |
---|
587 | if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_IDENTICAL)) |
---|
588 | Perl_croak(aTHX_ PL_no_modify); |
---|
589 | |
---|
590 | (void)SvPV(sv, len); |
---|
591 | if (!len) |
---|
592 | return 0; |
---|
593 | if (!SvPOKp(sv)) |
---|
594 | (void)SvPV_force(sv, len); |
---|
595 | (void)SvPOK_only(sv); |
---|
596 | |
---|
597 | DEBUG_t( Perl_deb(aTHX_ "2.TBL\n")); |
---|
598 | |
---|
599 | switch (PL_op->op_private & 63) { |
---|
600 | case 0: |
---|
601 | return do_trans_CC_simple(sv); |
---|
602 | |
---|
603 | case OPpTRANS_FROM_UTF: |
---|
604 | return do_trans_UC_simple(sv); |
---|
605 | |
---|
606 | case OPpTRANS_TO_UTF: |
---|
607 | return do_trans_CU_simple(sv); |
---|
608 | |
---|
609 | case OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF: |
---|
610 | return do_trans_UU_simple(sv); |
---|
611 | |
---|
612 | case OPpTRANS_IDENTICAL: |
---|
613 | return do_trans_CC_count(sv); |
---|
614 | |
---|
615 | case OPpTRANS_FROM_UTF|OPpTRANS_IDENTICAL: |
---|
616 | return do_trans_UC_trivial(sv); |
---|
617 | |
---|
618 | case OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL: |
---|
619 | return do_trans_CU_trivial(sv); |
---|
620 | |
---|
621 | case OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL: |
---|
622 | return do_trans_UU_count(sv); |
---|
623 | |
---|
624 | default: |
---|
625 | if (PL_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
---|
626 | return do_trans_UU_complex(sv); /* could be UC or CU too */ |
---|
627 | else |
---|
628 | return do_trans_CC_complex(sv); |
---|
629 | } |
---|
630 | } |
---|
631 | |
---|
632 | void |
---|
633 | Perl_do_join(pTHX_ register SV *sv, SV *del, register SV **mark, register SV **sp) |
---|
634 | { |
---|
635 | SV **oldmark = mark; |
---|
636 | register I32 items = sp - mark; |
---|
637 | register STRLEN len; |
---|
638 | STRLEN delimlen; |
---|
639 | register char *delim = SvPV(del, delimlen); |
---|
640 | STRLEN tmplen; |
---|
641 | |
---|
642 | mark++; |
---|
643 | len = (items > 0 ? (delimlen * (items - 1) ) : 0); |
---|
644 | (void)SvUPGRADE(sv, SVt_PV); |
---|
645 | if (SvLEN(sv) < len + items) { /* current length is way too short */ |
---|
646 | while (items-- > 0) { |
---|
647 | if (*mark && !SvGMAGICAL(*mark) && SvOK(*mark)) { |
---|
648 | SvPV(*mark, tmplen); |
---|
649 | len += tmplen; |
---|
650 | } |
---|
651 | mark++; |
---|
652 | } |
---|
653 | SvGROW(sv, len + 1); /* so try to pre-extend */ |
---|
654 | |
---|
655 | mark = oldmark; |
---|
656 | items = sp - mark; |
---|
657 | ++mark; |
---|
658 | } |
---|
659 | |
---|
660 | if (items-- > 0) { |
---|
661 | char *s; |
---|
662 | |
---|
663 | if (*mark) { |
---|
664 | s = SvPV(*mark, tmplen); |
---|
665 | sv_setpvn(sv, s, tmplen); |
---|
666 | } |
---|
667 | else |
---|
668 | sv_setpv(sv, ""); |
---|
669 | mark++; |
---|
670 | } |
---|
671 | else |
---|
672 | sv_setpv(sv,""); |
---|
673 | len = delimlen; |
---|
674 | if (len) { |
---|
675 | for (; items > 0; items--,mark++) { |
---|
676 | sv_catpvn(sv,delim,len); |
---|
677 | sv_catsv(sv,*mark); |
---|
678 | } |
---|
679 | } |
---|
680 | else { |
---|
681 | for (; items > 0; items--,mark++) |
---|
682 | sv_catsv(sv,*mark); |
---|
683 | } |
---|
684 | SvSETMAGIC(sv); |
---|
685 | } |
---|
686 | |
---|
687 | void |
---|
688 | Perl_do_sprintf(pTHX_ SV *sv, I32 len, SV **sarg) |
---|
689 | { |
---|
690 | STRLEN patlen; |
---|
691 | char *pat = SvPV(*sarg, patlen); |
---|
692 | bool do_taint = FALSE; |
---|
693 | |
---|
694 | sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint); |
---|
695 | SvSETMAGIC(sv); |
---|
696 | if (do_taint) |
---|
697 | SvTAINTED_on(sv); |
---|
698 | } |
---|
699 | |
---|
700 | UV |
---|
701 | Perl_do_vecget(pTHX_ SV *sv, I32 offset, I32 size) |
---|
702 | { |
---|
703 | STRLEN srclen, len; |
---|
704 | unsigned char *s = (unsigned char *) SvPV(sv, srclen); |
---|
705 | UV retnum = 0; |
---|
706 | |
---|
707 | if (offset < 0) |
---|
708 | return retnum; |
---|
709 | if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */ |
---|
710 | Perl_croak(aTHX_ "Illegal number of bits in vec"); |
---|
711 | offset *= size; /* turn into bit offset */ |
---|
712 | len = (offset + size + 7) / 8; /* required number of bytes */ |
---|
713 | if (len > srclen) { |
---|
714 | if (size <= 8) |
---|
715 | retnum = 0; |
---|
716 | else { |
---|
717 | offset >>= 3; /* turn into byte offset */ |
---|
718 | if (size == 16) { |
---|
719 | if (offset >= srclen) |
---|
720 | retnum = 0; |
---|
721 | else |
---|
722 | retnum = (UV) s[offset] << 8; |
---|
723 | } |
---|
724 | else if (size == 32) { |
---|
725 | if (offset >= srclen) |
---|
726 | retnum = 0; |
---|
727 | else if (offset + 1 >= srclen) |
---|
728 | retnum = |
---|
729 | ((UV) s[offset ] << 24); |
---|
730 | else if (offset + 2 >= srclen) |
---|
731 | retnum = |
---|
732 | ((UV) s[offset ] << 24) + |
---|
733 | ((UV) s[offset + 1] << 16); |
---|
734 | else |
---|
735 | retnum = |
---|
736 | ((UV) s[offset ] << 24) + |
---|
737 | ((UV) s[offset + 1] << 16) + |
---|
738 | ( s[offset + 2] << 8); |
---|
739 | } |
---|
740 | #ifdef UV_IS_QUAD |
---|
741 | else if (size == 64) { |
---|
742 | dTHR; |
---|
743 | if (ckWARN(WARN_PORTABLE)) |
---|
744 | Perl_warner(aTHX_ WARN_PORTABLE, |
---|
745 | "Bit vector size > 32 non-portable"); |
---|
746 | if (offset >= srclen) |
---|
747 | retnum = 0; |
---|
748 | else if (offset + 1 >= srclen) |
---|
749 | retnum = |
---|
750 | (UV) s[offset ] << 56; |
---|
751 | else if (offset + 2 >= srclen) |
---|
752 | retnum = |
---|
753 | ((UV) s[offset ] << 56) + |
---|
754 | ((UV) s[offset + 1] << 48); |
---|
755 | else if (offset + 3 >= srclen) |
---|
756 | retnum = |
---|
757 | ((UV) s[offset ] << 56) + |
---|
758 | ((UV) s[offset + 1] << 48) + |
---|
759 | ((UV) s[offset + 2] << 40); |
---|
760 | else if (offset + 4 >= srclen) |
---|
761 | retnum = |
---|
762 | ((UV) s[offset ] << 56) + |
---|
763 | ((UV) s[offset + 1] << 48) + |
---|
764 | ((UV) s[offset + 2] << 40) + |
---|
765 | ((UV) s[offset + 3] << 32); |
---|
766 | else if (offset + 5 >= srclen) |
---|
767 | retnum = |
---|
768 | ((UV) s[offset ] << 56) + |
---|
769 | ((UV) s[offset + 1] << 48) + |
---|
770 | ((UV) s[offset + 2] << 40) + |
---|
771 | ((UV) s[offset + 3] << 32) + |
---|
772 | ( s[offset + 4] << 24); |
---|
773 | else if (offset + 6 >= srclen) |
---|
774 | retnum = |
---|
775 | ((UV) s[offset ] << 56) + |
---|
776 | ((UV) s[offset + 1] << 48) + |
---|
777 | ((UV) s[offset + 2] << 40) + |
---|
778 | ((UV) s[offset + 3] << 32) + |
---|
779 | ((UV) s[offset + 4] << 24) + |
---|
780 | ((UV) s[offset + 5] << 16); |
---|
781 | else |
---|
782 | retnum = |
---|
783 | ((UV) s[offset ] << 56) + |
---|
784 | ((UV) s[offset + 1] << 48) + |
---|
785 | ((UV) s[offset + 2] << 40) + |
---|
786 | ((UV) s[offset + 3] << 32) + |
---|
787 | ((UV) s[offset + 4] << 24) + |
---|
788 | ((UV) s[offset + 5] << 16) + |
---|
789 | ( s[offset + 6] << 8); |
---|
790 | } |
---|
791 | #endif |
---|
792 | } |
---|
793 | } |
---|
794 | else if (size < 8) |
---|
795 | retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); |
---|
796 | else { |
---|
797 | offset >>= 3; /* turn into byte offset */ |
---|
798 | if (size == 8) |
---|
799 | retnum = s[offset]; |
---|
800 | else if (size == 16) |
---|
801 | retnum = |
---|
802 | ((UV) s[offset] << 8) + |
---|
803 | s[offset + 1]; |
---|
804 | else if (size == 32) |
---|
805 | retnum = |
---|
806 | ((UV) s[offset ] << 24) + |
---|
807 | ((UV) s[offset + 1] << 16) + |
---|
808 | ( s[offset + 2] << 8) + |
---|
809 | s[offset + 3]; |
---|
810 | #ifdef UV_IS_QUAD |
---|
811 | else if (size == 64) { |
---|
812 | dTHR; |
---|
813 | if (ckWARN(WARN_PORTABLE)) |
---|
814 | Perl_warner(aTHX_ WARN_PORTABLE, |
---|
815 | "Bit vector size > 32 non-portable"); |
---|
816 | retnum = |
---|
817 | ((UV) s[offset ] << 56) + |
---|
818 | ((UV) s[offset + 1] << 48) + |
---|
819 | ((UV) s[offset + 2] << 40) + |
---|
820 | ((UV) s[offset + 3] << 32) + |
---|
821 | ((UV) s[offset + 4] << 24) + |
---|
822 | ((UV) s[offset + 5] << 16) + |
---|
823 | ( s[offset + 6] << 8) + |
---|
824 | s[offset + 7]; |
---|
825 | } |
---|
826 | #endif |
---|
827 | } |
---|
828 | |
---|
829 | return retnum; |
---|
830 | } |
---|
831 | |
---|
832 | void |
---|
833 | Perl_do_vecset(pTHX_ SV *sv) |
---|
834 | { |
---|
835 | SV *targ = LvTARG(sv); |
---|
836 | register I32 offset; |
---|
837 | register I32 size; |
---|
838 | register unsigned char *s; |
---|
839 | register UV lval; |
---|
840 | I32 mask; |
---|
841 | STRLEN targlen; |
---|
842 | STRLEN len; |
---|
843 | |
---|
844 | if (!targ) |
---|
845 | return; |
---|
846 | s = (unsigned char*)SvPV_force(targ, targlen); |
---|
847 | lval = SvUV(sv); |
---|
848 | offset = LvTARGOFF(sv); |
---|
849 | size = LvTARGLEN(sv); |
---|
850 | if (size < 1 || (size & (size-1))) /* size < 1 or not a power of two */ |
---|
851 | Perl_croak(aTHX_ "Illegal number of bits in vec"); |
---|
852 | |
---|
853 | offset *= size; /* turn into bit offset */ |
---|
854 | len = (offset + size + 7) / 8; /* required number of bytes */ |
---|
855 | if (len > targlen) { |
---|
856 | s = (unsigned char*)SvGROW(targ, len + 1); |
---|
857 | (void)memzero(s + targlen, len - targlen + 1); |
---|
858 | SvCUR_set(targ, len); |
---|
859 | } |
---|
860 | |
---|
861 | if (size < 8) { |
---|
862 | mask = (1 << size) - 1; |
---|
863 | size = offset & 7; |
---|
864 | lval &= mask; |
---|
865 | offset >>= 3; /* turn into byte offset */ |
---|
866 | s[offset] &= ~(mask << size); |
---|
867 | s[offset] |= lval << size; |
---|
868 | } |
---|
869 | else { |
---|
870 | offset >>= 3; /* turn into byte offset */ |
---|
871 | if (size == 8) |
---|
872 | s[offset ] = lval & 0xff; |
---|
873 | else if (size == 16) { |
---|
874 | s[offset ] = (lval >> 8) & 0xff; |
---|
875 | s[offset+1] = lval & 0xff; |
---|
876 | } |
---|
877 | else if (size == 32) { |
---|
878 | s[offset ] = (lval >> 24) & 0xff; |
---|
879 | s[offset+1] = (lval >> 16) & 0xff; |
---|
880 | s[offset+2] = (lval >> 8) & 0xff; |
---|
881 | s[offset+3] = lval & 0xff; |
---|
882 | } |
---|
883 | #ifdef UV_IS_QUAD |
---|
884 | else if (size == 64) { |
---|
885 | dTHR; |
---|
886 | if (ckWARN(WARN_PORTABLE)) |
---|
887 | Perl_warner(aTHX_ WARN_PORTABLE, |
---|
888 | "Bit vector size > 32 non-portable"); |
---|
889 | s[offset ] = (lval >> 56) & 0xff; |
---|
890 | s[offset+1] = (lval >> 48) & 0xff; |
---|
891 | s[offset+2] = (lval >> 40) & 0xff; |
---|
892 | s[offset+3] = (lval >> 32) & 0xff; |
---|
893 | s[offset+4] = (lval >> 24) & 0xff; |
---|
894 | s[offset+5] = (lval >> 16) & 0xff; |
---|
895 | s[offset+6] = (lval >> 8) & 0xff; |
---|
896 | s[offset+7] = lval & 0xff; |
---|
897 | } |
---|
898 | #endif |
---|
899 | } |
---|
900 | SvSETMAGIC(targ); |
---|
901 | } |
---|
902 | |
---|
903 | void |
---|
904 | Perl_do_chop(pTHX_ register SV *astr, register SV *sv) |
---|
905 | { |
---|
906 | STRLEN len; |
---|
907 | char *s; |
---|
908 | dTHR; |
---|
909 | |
---|
910 | if (SvTYPE(sv) == SVt_PVAV) { |
---|
911 | register I32 i; |
---|
912 | I32 max; |
---|
913 | AV* av = (AV*)sv; |
---|
914 | max = AvFILL(av); |
---|
915 | for (i = 0; i <= max; i++) { |
---|
916 | sv = (SV*)av_fetch(av, i, FALSE); |
---|
917 | if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef)) |
---|
918 | do_chop(astr, sv); |
---|
919 | } |
---|
920 | return; |
---|
921 | } |
---|
922 | else if (SvTYPE(sv) == SVt_PVHV) { |
---|
923 | HV* hv = (HV*)sv; |
---|
924 | HE* entry; |
---|
925 | (void)hv_iterinit(hv); |
---|
926 | /*SUPPRESS 560*/ |
---|
927 | while ((entry = hv_iternext(hv))) |
---|
928 | do_chop(astr,hv_iterval(hv,entry)); |
---|
929 | return; |
---|
930 | } |
---|
931 | else if (SvREADONLY(sv)) |
---|
932 | Perl_croak(aTHX_ PL_no_modify); |
---|
933 | s = SvPV(sv, len); |
---|
934 | if (len && !SvPOK(sv)) |
---|
935 | s = SvPV_force(sv, len); |
---|
936 | if (DO_UTF8(sv)) { |
---|
937 | if (s && len) { |
---|
938 | char *send = s + len; |
---|
939 | char *start = s; |
---|
940 | s = send - 1; |
---|
941 | while ((*s & 0xc0) == 0x80) |
---|
942 | --s; |
---|
943 | if (UTF8SKIP(s) != send - s && ckWARN_d(WARN_UTF8)) |
---|
944 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); |
---|
945 | sv_setpvn(astr, s, send - s); |
---|
946 | *s = '\0'; |
---|
947 | SvCUR_set(sv, s - start); |
---|
948 | SvNIOK_off(sv); |
---|
949 | SvUTF8_on(astr); |
---|
950 | } |
---|
951 | else |
---|
952 | sv_setpvn(astr, "", 0); |
---|
953 | } |
---|
954 | else if (s && len) { |
---|
955 | s += --len; |
---|
956 | sv_setpvn(astr, s, 1); |
---|
957 | *s = '\0'; |
---|
958 | SvCUR_set(sv, len); |
---|
959 | SvUTF8_off(sv); |
---|
960 | SvNIOK_off(sv); |
---|
961 | } |
---|
962 | else |
---|
963 | sv_setpvn(astr, "", 0); |
---|
964 | SvSETMAGIC(sv); |
---|
965 | } |
---|
966 | |
---|
967 | I32 |
---|
968 | Perl_do_chomp(pTHX_ register SV *sv) |
---|
969 | { |
---|
970 | dTHR; |
---|
971 | register I32 count; |
---|
972 | STRLEN len; |
---|
973 | char *s; |
---|
974 | |
---|
975 | if (RsSNARF(PL_rs)) |
---|
976 | return 0; |
---|
977 | if (RsRECORD(PL_rs)) |
---|
978 | return 0; |
---|
979 | count = 0; |
---|
980 | if (SvTYPE(sv) == SVt_PVAV) { |
---|
981 | register I32 i; |
---|
982 | I32 max; |
---|
983 | AV* av = (AV*)sv; |
---|
984 | max = AvFILL(av); |
---|
985 | for (i = 0; i <= max; i++) { |
---|
986 | sv = (SV*)av_fetch(av, i, FALSE); |
---|
987 | if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef)) |
---|
988 | count += do_chomp(sv); |
---|
989 | } |
---|
990 | return count; |
---|
991 | } |
---|
992 | else if (SvTYPE(sv) == SVt_PVHV) { |
---|
993 | HV* hv = (HV*)sv; |
---|
994 | HE* entry; |
---|
995 | (void)hv_iterinit(hv); |
---|
996 | /*SUPPRESS 560*/ |
---|
997 | while ((entry = hv_iternext(hv))) |
---|
998 | count += do_chomp(hv_iterval(hv,entry)); |
---|
999 | return count; |
---|
1000 | } |
---|
1001 | else if (SvREADONLY(sv)) |
---|
1002 | Perl_croak(aTHX_ PL_no_modify); |
---|
1003 | s = SvPV(sv, len); |
---|
1004 | if (len && !SvPOKp(sv)) |
---|
1005 | s = SvPV_force(sv, len); |
---|
1006 | if (s && len) { |
---|
1007 | s += --len; |
---|
1008 | if (RsPARA(PL_rs)) { |
---|
1009 | if (*s != '\n') |
---|
1010 | goto nope; |
---|
1011 | ++count; |
---|
1012 | while (len && s[-1] == '\n') { |
---|
1013 | --len; |
---|
1014 | --s; |
---|
1015 | ++count; |
---|
1016 | } |
---|
1017 | } |
---|
1018 | else { |
---|
1019 | STRLEN rslen; |
---|
1020 | char *rsptr = SvPV(PL_rs, rslen); |
---|
1021 | if (rslen == 1) { |
---|
1022 | if (*s != *rsptr) |
---|
1023 | goto nope; |
---|
1024 | ++count; |
---|
1025 | } |
---|
1026 | else { |
---|
1027 | if (len < rslen - 1) |
---|
1028 | goto nope; |
---|
1029 | len -= rslen - 1; |
---|
1030 | s -= rslen - 1; |
---|
1031 | if (memNE(s, rsptr, rslen)) |
---|
1032 | goto nope; |
---|
1033 | count += rslen; |
---|
1034 | } |
---|
1035 | } |
---|
1036 | *s = '\0'; |
---|
1037 | SvCUR_set(sv, len); |
---|
1038 | SvNIOK_off(sv); |
---|
1039 | } |
---|
1040 | nope: |
---|
1041 | SvSETMAGIC(sv); |
---|
1042 | return count; |
---|
1043 | } |
---|
1044 | |
---|
1045 | void |
---|
1046 | Perl_do_vop(pTHX_ I32 optype, SV *sv, SV *left, SV *right) |
---|
1047 | { |
---|
1048 | dTHR; /* just for taint */ |
---|
1049 | #ifdef LIBERAL |
---|
1050 | register long *dl; |
---|
1051 | register long *ll; |
---|
1052 | register long *rl; |
---|
1053 | #endif |
---|
1054 | register char *dc; |
---|
1055 | STRLEN leftlen; |
---|
1056 | STRLEN rightlen; |
---|
1057 | register char *lc; |
---|
1058 | register char *rc; |
---|
1059 | register I32 len; |
---|
1060 | I32 lensave; |
---|
1061 | char *lsave; |
---|
1062 | char *rsave; |
---|
1063 | bool left_utf = DO_UTF8(left); |
---|
1064 | bool right_utf = DO_UTF8(right); |
---|
1065 | |
---|
1066 | if (left_utf && !right_utf) |
---|
1067 | sv_utf8_upgrade(right); |
---|
1068 | if (!left_utf && right_utf) |
---|
1069 | sv_utf8_upgrade(left); |
---|
1070 | |
---|
1071 | if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv))) |
---|
1072 | sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */ |
---|
1073 | lsave = lc = SvPV(left, leftlen); |
---|
1074 | rsave = rc = SvPV(right, rightlen); |
---|
1075 | len = leftlen < rightlen ? leftlen : rightlen; |
---|
1076 | lensave = len; |
---|
1077 | if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) { |
---|
1078 | STRLEN n_a; |
---|
1079 | dc = SvPV_force(sv, n_a); |
---|
1080 | if (SvCUR(sv) < len) { |
---|
1081 | dc = SvGROW(sv, len + 1); |
---|
1082 | (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1); |
---|
1083 | } |
---|
1084 | } |
---|
1085 | else { |
---|
1086 | I32 needlen = ((optype == OP_BIT_AND) |
---|
1087 | ? len : (leftlen > rightlen ? leftlen : rightlen)); |
---|
1088 | Newz(801, dc, needlen + 1, char); |
---|
1089 | (void)sv_usepvn(sv, dc, needlen); |
---|
1090 | dc = SvPVX(sv); /* sv_usepvn() calls Renew() */ |
---|
1091 | } |
---|
1092 | SvCUR_set(sv, len); |
---|
1093 | (void)SvPOK_only(sv); |
---|
1094 | if (left_utf || right_utf) { |
---|
1095 | UV duc, luc, ruc; |
---|
1096 | STRLEN lulen = leftlen; |
---|
1097 | STRLEN rulen = rightlen; |
---|
1098 | STRLEN dulen = 0; |
---|
1099 | I32 ulen; |
---|
1100 | |
---|
1101 | if (optype != OP_BIT_AND) |
---|
1102 | dc = SvGROW(sv, leftlen+rightlen+1); |
---|
1103 | |
---|
1104 | switch (optype) { |
---|
1105 | case OP_BIT_AND: |
---|
1106 | while (lulen && rulen) { |
---|
1107 | luc = utf8_to_uv((U8*)lc, &ulen); |
---|
1108 | lc += ulen; |
---|
1109 | lulen -= ulen; |
---|
1110 | ruc = utf8_to_uv((U8*)rc, &ulen); |
---|
1111 | rc += ulen; |
---|
1112 | rulen -= ulen; |
---|
1113 | duc = luc & ruc; |
---|
1114 | dc = (char*)uv_to_utf8((U8*)dc, duc); |
---|
1115 | } |
---|
1116 | dulen = dc - SvPVX(sv); |
---|
1117 | SvCUR_set(sv, dulen); |
---|
1118 | break; |
---|
1119 | case OP_BIT_XOR: |
---|
1120 | while (lulen && rulen) { |
---|
1121 | luc = utf8_to_uv((U8*)lc, &ulen); |
---|
1122 | lc += ulen; |
---|
1123 | lulen -= ulen; |
---|
1124 | ruc = utf8_to_uv((U8*)rc, &ulen); |
---|
1125 | rc += ulen; |
---|
1126 | rulen -= ulen; |
---|
1127 | duc = luc ^ ruc; |
---|
1128 | dc = (char*)uv_to_utf8((U8*)dc, duc); |
---|
1129 | } |
---|
1130 | goto mop_up_utf; |
---|
1131 | case OP_BIT_OR: |
---|
1132 | while (lulen && rulen) { |
---|
1133 | luc = utf8_to_uv((U8*)lc, &ulen); |
---|
1134 | lc += ulen; |
---|
1135 | lulen -= ulen; |
---|
1136 | ruc = utf8_to_uv((U8*)rc, &ulen); |
---|
1137 | rc += ulen; |
---|
1138 | rulen -= ulen; |
---|
1139 | duc = luc | ruc; |
---|
1140 | dc = (char*)uv_to_utf8((U8*)dc, duc); |
---|
1141 | } |
---|
1142 | mop_up_utf: |
---|
1143 | dulen = dc - SvPVX(sv); |
---|
1144 | SvCUR_set(sv, dulen); |
---|
1145 | if (rulen) |
---|
1146 | sv_catpvn(sv, rc, rulen); |
---|
1147 | else if (lulen) |
---|
1148 | sv_catpvn(sv, lc, lulen); |
---|
1149 | else |
---|
1150 | *SvEND(sv) = '\0'; |
---|
1151 | break; |
---|
1152 | } |
---|
1153 | SvUTF8_on(sv); |
---|
1154 | goto finish; |
---|
1155 | } |
---|
1156 | else |
---|
1157 | #ifdef LIBERAL |
---|
1158 | if (len >= sizeof(long)*4 && |
---|
1159 | !((long)dc % sizeof(long)) && |
---|
1160 | !((long)lc % sizeof(long)) && |
---|
1161 | !((long)rc % sizeof(long))) /* It's almost always aligned... */ |
---|
1162 | { |
---|
1163 | I32 remainder = len % (sizeof(long)*4); |
---|
1164 | len /= (sizeof(long)*4); |
---|
1165 | |
---|
1166 | dl = (long*)dc; |
---|
1167 | ll = (long*)lc; |
---|
1168 | rl = (long*)rc; |
---|
1169 | |
---|
1170 | switch (optype) { |
---|
1171 | case OP_BIT_AND: |
---|
1172 | while (len--) { |
---|
1173 | *dl++ = *ll++ & *rl++; |
---|
1174 | *dl++ = *ll++ & *rl++; |
---|
1175 | *dl++ = *ll++ & *rl++; |
---|
1176 | *dl++ = *ll++ & *rl++; |
---|
1177 | } |
---|
1178 | break; |
---|
1179 | case OP_BIT_XOR: |
---|
1180 | while (len--) { |
---|
1181 | *dl++ = *ll++ ^ *rl++; |
---|
1182 | *dl++ = *ll++ ^ *rl++; |
---|
1183 | *dl++ = *ll++ ^ *rl++; |
---|
1184 | *dl++ = *ll++ ^ *rl++; |
---|
1185 | } |
---|
1186 | break; |
---|
1187 | case OP_BIT_OR: |
---|
1188 | while (len--) { |
---|
1189 | *dl++ = *ll++ | *rl++; |
---|
1190 | *dl++ = *ll++ | *rl++; |
---|
1191 | *dl++ = *ll++ | *rl++; |
---|
1192 | *dl++ = *ll++ | *rl++; |
---|
1193 | } |
---|
1194 | } |
---|
1195 | |
---|
1196 | dc = (char*)dl; |
---|
1197 | lc = (char*)ll; |
---|
1198 | rc = (char*)rl; |
---|
1199 | |
---|
1200 | len = remainder; |
---|
1201 | } |
---|
1202 | #endif |
---|
1203 | { |
---|
1204 | switch (optype) { |
---|
1205 | case OP_BIT_AND: |
---|
1206 | while (len--) |
---|
1207 | *dc++ = *lc++ & *rc++; |
---|
1208 | break; |
---|
1209 | case OP_BIT_XOR: |
---|
1210 | while (len--) |
---|
1211 | *dc++ = *lc++ ^ *rc++; |
---|
1212 | goto mop_up; |
---|
1213 | case OP_BIT_OR: |
---|
1214 | while (len--) |
---|
1215 | *dc++ = *lc++ | *rc++; |
---|
1216 | mop_up: |
---|
1217 | len = lensave; |
---|
1218 | if (rightlen > len) |
---|
1219 | sv_catpvn(sv, rsave + len, rightlen - len); |
---|
1220 | else if (leftlen > len) |
---|
1221 | sv_catpvn(sv, lsave + len, leftlen - len); |
---|
1222 | else |
---|
1223 | *SvEND(sv) = '\0'; |
---|
1224 | break; |
---|
1225 | } |
---|
1226 | } |
---|
1227 | finish: |
---|
1228 | SvTAINT(sv); |
---|
1229 | } |
---|
1230 | |
---|
1231 | OP * |
---|
1232 | Perl_do_kv(pTHX) |
---|
1233 | { |
---|
1234 | djSP; |
---|
1235 | HV *hv = (HV*)POPs; |
---|
1236 | HV *keys; |
---|
1237 | register HE *entry; |
---|
1238 | SV *tmpstr; |
---|
1239 | I32 gimme = GIMME_V; |
---|
1240 | I32 dokeys = (PL_op->op_type == OP_KEYS); |
---|
1241 | I32 dovalues = (PL_op->op_type == OP_VALUES); |
---|
1242 | I32 realhv = (SvTYPE(hv) == SVt_PVHV); |
---|
1243 | |
---|
1244 | if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV) |
---|
1245 | dokeys = dovalues = TRUE; |
---|
1246 | |
---|
1247 | if (!hv) { |
---|
1248 | if (PL_op->op_flags & OPf_MOD) { /* lvalue */ |
---|
1249 | dTARGET; /* make sure to clear its target here */ |
---|
1250 | if (SvTYPE(TARG) == SVt_PVLV) |
---|
1251 | LvTARG(TARG) = Nullsv; |
---|
1252 | PUSHs(TARG); |
---|
1253 | } |
---|
1254 | RETURN; |
---|
1255 | } |
---|
1256 | |
---|
1257 | keys = realhv ? hv : avhv_keys((AV*)hv); |
---|
1258 | (void)hv_iterinit(keys); /* always reset iterator regardless */ |
---|
1259 | |
---|
1260 | if (gimme == G_VOID) |
---|
1261 | RETURN; |
---|
1262 | |
---|
1263 | if (gimme == G_SCALAR) { |
---|
1264 | IV i; |
---|
1265 | dTARGET; |
---|
1266 | |
---|
1267 | if (PL_op->op_flags & OPf_MOD) { /* lvalue */ |
---|
1268 | if (SvTYPE(TARG) < SVt_PVLV) { |
---|
1269 | sv_upgrade(TARG, SVt_PVLV); |
---|
1270 | sv_magic(TARG, Nullsv, 'k', Nullch, 0); |
---|
1271 | } |
---|
1272 | LvTYPE(TARG) = 'k'; |
---|
1273 | if (LvTARG(TARG) != (SV*)keys) { |
---|
1274 | if (LvTARG(TARG)) |
---|
1275 | SvREFCNT_dec(LvTARG(TARG)); |
---|
1276 | LvTARG(TARG) = SvREFCNT_inc(keys); |
---|
1277 | } |
---|
1278 | PUSHs(TARG); |
---|
1279 | RETURN; |
---|
1280 | } |
---|
1281 | |
---|
1282 | if (! SvTIED_mg((SV*)keys, 'P')) |
---|
1283 | i = HvKEYS(keys); |
---|
1284 | else { |
---|
1285 | i = 0; |
---|
1286 | /*SUPPRESS 560*/ |
---|
1287 | while (hv_iternext(keys)) i++; |
---|
1288 | } |
---|
1289 | PUSHi( i ); |
---|
1290 | RETURN; |
---|
1291 | } |
---|
1292 | |
---|
1293 | EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues)); |
---|
1294 | |
---|
1295 | PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */ |
---|
1296 | while ((entry = hv_iternext(keys))) { |
---|
1297 | SPAGAIN; |
---|
1298 | if (dokeys) |
---|
1299 | XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */ |
---|
1300 | if (dovalues) { |
---|
1301 | PUTBACK; |
---|
1302 | tmpstr = realhv ? |
---|
1303 | hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry); |
---|
1304 | DEBUG_H(Perl_sv_setpvf(aTHX_ tmpstr, "%lu%%%d=%lu", |
---|
1305 | (unsigned long)HeHASH(entry), |
---|
1306 | HvMAX(keys)+1, |
---|
1307 | (unsigned long)(HeHASH(entry) & HvMAX(keys)))); |
---|
1308 | SPAGAIN; |
---|
1309 | XPUSHs(tmpstr); |
---|
1310 | } |
---|
1311 | PUTBACK; |
---|
1312 | } |
---|
1313 | return NORMAL; |
---|
1314 | } |
---|
1315 | |
---|