Wed, 04 Jun 2025 23:12:27 -0500
Fix log viewing for missing protocols
This works around an issue where we depend on the protocol to determine where
its logs are stored so that you can still view logs for existing accounts if
the protocol plugin is no longer on disk.
This still requires the account to exist with the correct protocol-id to work.
Testing Done:
I manually added on of my old aim accounts that I still have logs from to `accounts.xml`. I then selected `View User Log...` from the `Buddies` menu, selected that aim account and entered a contact who I knew I had logs for and verified that those logs were displayed properly.
Bugs closed: PIDGIN-18096
Reviewed at https://reviews.imfreedom.org/r/4016/
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1 | /* |
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2 | * (C) Copyright 2008-2009 Jakub Zawadzki <darkjames@darkjames.ath.cx> |
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3 | * Wojtek Kaniewski <wojtekka@irc.pl> |
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4 | * |
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5 | * This program is free software; you can redistribute it and/or modify |
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6 | * it under the terms of the GNU Lesser General Public License Version |
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7 | * 2.1 as published by the Free Software Foundation. |
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8 | * |
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9 | * This program is distributed in the hope that it will be useful, |
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | * GNU Lesser General Public License for more details. |
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13 | * |
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14 | * You should have received a copy of the GNU Lesser General Public |
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15 | * License along with this program; if not, write to the Free Software |
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16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, |
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17 | * USA. |
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18 | */ |
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19 | |
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20 | #include "strman.h" |
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21 | #include <stdlib.h> |
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22 | #include <errno.h> |
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23 | |
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24 | #include "libgadu.h" |
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25 | #include "encoding.h" |
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26 | |
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27 | /** |
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28 | * \file encoding.c |
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29 | * |
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30 | * \brief Funkcje konwersji kodowania tekstu |
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31 | */ |
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32 | |
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33 | /** |
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34 | * \internal Tablica konwersji CP1250 na Unikod. |
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35 | */ |
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36 | static const uint16_t table_cp1250[] = |
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37 | { |
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38 | 0x20ac, '?', 0x201a, '?', 0x201e, 0x2026, 0x2020, 0x2021, |
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39 | '?', 0x2030, 0x0160, 0x2039, 0x015a, 0x0164, 0x017d, 0x0179, |
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40 | '?', 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014, |
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41 | '?', 0x2122, 0x0161, 0x203a, 0x015b, 0x0165, 0x017e, 0x017a, |
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42 | 0x00a0, 0x02c7, 0x02d8, 0x0141, 0x00a4, 0x0104, 0x00a6, 0x00a7, |
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43 | 0x00a8, 0x00a9, 0x015e, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x017b, |
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44 | 0x00b0, 0x00b1, 0x02db, 0x0142, 0x00b4, 0x00b5, 0x00b6, 0x00b7, |
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45 | 0x00b8, 0x0105, 0x015f, 0x00bb, 0x013d, 0x02dd, 0x013e, 0x017c, |
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46 | 0x0154, 0x00c1, 0x00c2, 0x0102, 0x00c4, 0x0139, 0x0106, 0x00c7, |
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47 | 0x010c, 0x00c9, 0x0118, 0x00cb, 0x011a, 0x00cd, 0x00ce, 0x010e, |
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48 | 0x0110, 0x0143, 0x0147, 0x00d3, 0x00d4, 0x0150, 0x00d6, 0x00d7, |
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49 | 0x0158, 0x016e, 0x00da, 0x0170, 0x00dc, 0x00dd, 0x0162, 0x00df, |
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50 | 0x0155, 0x00e1, 0x00e2, 0x0103, 0x00e4, 0x013a, 0x0107, 0x00e7, |
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51 | 0x010d, 0x00e9, 0x0119, 0x00eb, 0x011b, 0x00ed, 0x00ee, 0x010f, |
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52 | 0x0111, 0x0144, 0x0148, 0x00f3, 0x00f4, 0x0151, 0x00f6, 0x00f7, |
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53 | 0x0159, 0x016f, 0x00fa, 0x0171, 0x00fc, 0x00fd, 0x0163, 0x02d9, |
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54 | }; |
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55 | |
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56 | /** |
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57 | * \internal Zamienia tekst kodowany CP1250 na UTF-8. |
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58 | * |
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59 | * \param src Tekst źródłowy w CP1250. |
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60 | * \param src_length Długość ciągu źródłowego (nigdy ujemna). |
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61 | * \param dst_length Długość ciągu docelowego (jeśli -1, nieograniczona). |
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62 | * |
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63 | * \return Zaalokowany bufor z tekstem w UTF-8. |
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64 | */ |
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65 | static char *gg_encoding_convert_cp1250_utf8(const char *src, int src_length, int dst_length) |
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66 | { |
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67 | int i, j, len; |
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68 | char *result = NULL; |
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69 | |
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70 | for (i = 0, len = 0; (src[i] != 0) && (i < src_length); i++) { |
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71 | uint16_t uc; |
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72 | |
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73 | if ((unsigned char) src[i] < 0x80) |
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74 | uc = (unsigned char) src[i]; |
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75 | else |
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76 | uc = table_cp1250[(unsigned char) src[i] - 128]; |
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77 | |
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78 | if (uc < 0x80) |
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79 | len += 1; |
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80 | else if (uc < 0x800) |
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81 | len += 2; |
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82 | else |
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83 | len += 3; |
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84 | } |
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85 | |
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86 | if ((dst_length != -1) && (len > dst_length)) |
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87 | len = dst_length; |
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88 | |
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89 | result = malloc(len + 1); |
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90 | |
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91 | if (result == NULL) |
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92 | return NULL; |
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93 | |
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94 | for (i = 0, j = 0; (src[i] != 0) && (i < src_length) && (j < len); i++) { |
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95 | uint16_t uc; |
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96 | |
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97 | if ((unsigned char) src[i] < 0x80) |
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98 | uc = (unsigned char) src[i]; |
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99 | else |
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100 | uc = table_cp1250[(unsigned char) src[i] - 128]; |
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101 | |
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102 | if (uc < 0x80) |
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103 | result[j++] = (char) uc; |
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104 | else if (uc < 0x800) { |
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105 | if (j + 1 > len) |
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106 | break; |
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107 | result[j++] = 0xc0 | ((uc >> 6) & 0x1f); |
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108 | result[j++] = 0x80 | (uc & 0x3f); |
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109 | } else { |
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110 | if (j + 2 > len) |
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111 | break; |
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112 | result[j++] = 0xe0 | ((uc >> 12) & 0x1f); |
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113 | result[j++] = 0x80 | ((uc >> 6) & 0x3f); |
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114 | result[j++] = 0x80 | (uc & 0x3f); |
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115 | } |
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116 | } |
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117 | |
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118 | result[j] = 0; |
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119 | |
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120 | return result; |
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121 | } |
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122 | |
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123 | /** |
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124 | * \internal Zamienia tekst kodowany UTF-8 na CP1250. |
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125 | * |
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126 | * \param src Tekst źródłowy w UTF-8. |
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127 | * \param src_length Długość ciągu źródłowego (nigdy ujemna). |
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128 | * \param dst_length Długość ciągu docelowego (jeśli -1, nieograniczona). |
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129 | * |
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130 | * \return Zaalokowany bufor z tekstem w CP1250. |
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131 | */ |
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132 | static char *gg_encoding_convert_utf8_cp1250(const char *src, int src_length, int dst_length) |
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133 | { |
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134 | char *result; |
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135 | int i, j, len, uc_left = 0; |
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136 | uint32_t uc = 0, uc_min = 0; |
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137 | |
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138 | for (i = 0, len = 0; (src[i] != 0) && (i < src_length); i++) { |
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139 | if ((src[i] & 0xc0) != 0x80) |
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140 | len++; |
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141 | } |
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142 | |
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143 | if ((dst_length != -1) && (len > dst_length)) |
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144 | len = dst_length; |
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145 | |
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146 | result = malloc(len + 1); |
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147 | |
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148 | if (result == NULL) |
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149 | return NULL; |
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150 | |
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151 | for (i = 0, j = 0; (src[i] != 0) && (i < src_length) && (j < len); i++) { |
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152 | if ((unsigned char) src[i] >= 0xf5) { |
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153 | if (uc_left != 0) |
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154 | result[j++] = '?'; |
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155 | /* Restricted sequences */ |
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156 | result[j++] = '?'; |
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157 | uc_left = 0; |
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158 | } else if ((src[i] & 0xf8) == 0xf0) { |
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159 | if (uc_left != 0) |
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160 | result[j++] = '?'; |
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161 | uc = src[i] & 0x07; |
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162 | uc_left = 3; |
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163 | uc_min = 0x10000; |
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164 | } else if ((src[i] & 0xf0) == 0xe0) { |
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165 | if (uc_left != 0) |
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166 | result[j++] = '?'; |
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167 | uc = src[i] & 0x0f; |
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168 | uc_left = 2; |
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169 | uc_min = 0x800; |
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170 | } else if ((src[i] & 0xe0) == 0xc0) { |
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171 | if (uc_left != 0) |
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172 | result[j++] = '?'; |
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173 | uc = src[i] & 0x1f; |
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174 | uc_left = 1; |
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175 | uc_min = 0x80; |
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176 | } else if ((src[i] & 0xc0) == 0x80) { |
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177 | if (uc_left > 0) { |
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178 | uc <<= 6; |
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179 | uc |= src[i] & 0x3f; |
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180 | uc_left--; |
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181 | |
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182 | if (uc_left == 0) { |
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183 | int valid = 0; |
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184 | int k; |
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185 | |
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186 | if (uc >= uc_min) { |
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187 | for (k = 0; k < 128; k++) { |
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188 | if (uc == table_cp1250[k]) { |
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189 | result[j++] = k + 128; |
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190 | valid = 1; |
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191 | break; |
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192 | } |
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193 | } |
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194 | } |
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195 | |
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196 | if (!valid && uc != 0xfeff) /* Byte Order Mark */ |
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197 | result[j++] = '?'; |
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198 | } |
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199 | } |
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200 | } else { |
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201 | if (uc_left != 0) { |
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202 | result[j++] = '?'; |
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203 | uc_left = 0; |
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204 | } |
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205 | result[j++] = src[i]; |
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206 | } |
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207 | } |
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208 | |
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209 | if ((uc_left != 0) && (src[i] == 0)) |
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210 | result[j++] = '?'; |
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211 | |
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212 | result[j] = 0; |
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213 | |
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214 | return result; |
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215 | } |
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216 | |
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217 | /** |
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218 | * \internal Zamienia kodowanie tekstu. |
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219 | * |
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220 | * \param src Tekst źródłowy. |
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221 | * \param src_encoding Kodowanie tekstu źródłowego. |
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222 | * \param dst_encoding Kodowanie tekstu docelowego. |
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223 | * \param src_length Długość ciągu źródłowego w bajtach (jeśli -1, zostanie obliczona na podstawie zawartości \p src). |
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224 | * \param dst_length Długość ciągu docelowego w bajtach (jeśli -1, nieograniczona). |
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225 | * |
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226 | * \return Zaalokowany bufor z tekstem w kodowaniu docelowym. |
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227 | */ |
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228 | char *gg_encoding_convert(const char *src, gg_encoding_t src_encoding, |
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229 | gg_encoding_t dst_encoding, int src_length, int dst_length) |
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230 | { |
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231 | char *result; |
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232 | |
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233 | if (src == NULL) { |
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234 | errno = EINVAL; |
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235 | return NULL; |
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236 | } |
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237 | |
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238 | /* specjalny przypadek obsługiwany ekspresowo */ |
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239 | if ((dst_encoding == src_encoding) && (dst_length == -1) && (src_length == -1)) |
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240 | return strdup(src); |
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241 | |
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242 | if (src_length == -1) |
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243 | src_length = strlen(src); |
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244 | |
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245 | if (dst_encoding == src_encoding) { |
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246 | int len; |
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247 | |
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248 | if (dst_length == -1) |
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249 | len = src_length; |
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250 | else |
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251 | len = (src_length < dst_length) ? src_length : dst_length; |
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252 | |
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253 | result = malloc(len + 1); |
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254 | |
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255 | if (result == NULL) |
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256 | return NULL; |
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257 | |
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258 | strncpy(result, src, len); |
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259 | result[len] = 0; |
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260 | |
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261 | return result; |
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262 | } |
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263 | |
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264 | if (dst_encoding == GG_ENCODING_CP1250 && src_encoding == GG_ENCODING_UTF8) |
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265 | return gg_encoding_convert_utf8_cp1250(src, src_length, dst_length); |
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266 | |
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267 | if (dst_encoding == GG_ENCODING_UTF8 && src_encoding == GG_ENCODING_CP1250) |
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268 | return gg_encoding_convert_cp1250_utf8(src, src_length, dst_length); |
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269 | |
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270 | errno = EINVAL; |
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271 | return NULL; |
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272 | } |