1 | //========================================================================= |
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2 | // FILENAME : tagutils-misc.c |
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3 | // DESCRIPTION : Misc routines for supporting tagutils |
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4 | //========================================================================= |
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5 | // Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved. |
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6 | //========================================================================= |
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7 | |
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8 | /* This program is free software; you can redistribute it and/or modify |
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9 | * it under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; either version 2 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program 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 |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 | */ |
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21 | |
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22 | /************************************************************************** |
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23 | * Language |
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24 | **************************************************************************/ |
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25 | |
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26 | #define MAX_ICONV_BUF 1024 |
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27 | |
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28 | typedef enum { |
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29 | ICONV_OK, |
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30 | ICONV_TRYNEXT, |
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31 | ICONV_FATAL |
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32 | } iconv_result; |
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33 | |
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34 | static iconv_result |
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35 | do_iconv(const char* to_ces, const char* from_ces, |
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36 | char *inbuf, size_t inbytesleft, |
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37 | char *outbuf_orig, size_t outbytesleft_orig) |
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38 | { |
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39 | #ifdef HAVE_ICONV_H |
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40 | size_t rc; |
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41 | iconv_result ret = ICONV_OK; |
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42 | |
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43 | size_t outbytesleft = outbytesleft_orig - 1; |
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44 | char* outbuf = outbuf_orig; |
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45 | |
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46 | iconv_t cd = iconv_open(to_ces, from_ces); |
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47 | |
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48 | if(cd == (iconv_t)-1) |
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49 | { |
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50 | return ICONV_FATAL; |
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51 | } |
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52 | rc = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); |
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53 | if(rc == (size_t)-1) |
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54 | { |
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55 | if(errno == E2BIG) |
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56 | { |
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57 | ret = ICONV_FATAL; |
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58 | } |
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59 | else |
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60 | { |
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61 | ret = ICONV_TRYNEXT; |
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62 | memset(outbuf_orig, '\0', outbytesleft_orig); |
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63 | } |
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64 | } |
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65 | iconv_close(cd); |
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66 | |
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67 | return ret; |
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68 | #else // HAVE_ICONV_H |
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69 | return ICONV_FATAL; |
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70 | #endif // HAVE_ICONV_H |
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71 | } |
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72 | |
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73 | #define N_LANG_ALT 8 |
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74 | struct { |
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75 | char *lang; |
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76 | char *cpnames[N_LANG_ALT]; |
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77 | } iconv_map[] = { |
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78 | { "ja_JP", { "CP932", "CP950", "CP936", "ISO-8859-1", 0 } }, |
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79 | { "zh_CN", { "CP936", "CP950", "CP932", "ISO-8859-1", 0 } }, |
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80 | { "zh_TW", { "CP950", "CP936", "CP932", "ISO-8859-1", 0 } }, |
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81 | { "ko_KR", { "CP949", "ISO-8859-1", 0 } }, |
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82 | { 0, { 0 } } |
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83 | }; |
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84 | static int lang_index = -1; |
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85 | |
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86 | static int |
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87 | _lang2cp(char *lang) |
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88 | { |
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89 | int cp; |
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90 | |
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91 | if(!lang || lang[0] == '\0') |
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92 | return -1; |
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93 | for(cp = 0; iconv_map[cp].lang; cp++) |
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94 | { |
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95 | if(!strcasecmp(iconv_map[cp].lang, lang)) |
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96 | return cp; |
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97 | } |
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98 | return -2; |
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99 | } |
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100 | |
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101 | static unsigned char* |
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102 | _get_utf8_text(const id3_ucs4_t* native_text) |
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103 | { |
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104 | unsigned char *utf8_text = NULL; |
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105 | char *in, *in8, *iconv_buf; |
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106 | iconv_result rc; |
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107 | int i, n; |
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108 | |
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109 | in = (char*)id3_ucs4_latin1duplicate(native_text); |
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110 | if(!in) |
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111 | { |
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112 | goto out; |
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113 | } |
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114 | |
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115 | in8 = (char*)id3_ucs4_utf8duplicate(native_text); |
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116 | if(!in8) |
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117 | { |
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118 | free(in); |
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119 | goto out; |
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120 | } |
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121 | |
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122 | iconv_buf = (char*)calloc(MAX_ICONV_BUF, sizeof(char)); |
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123 | if(!iconv_buf) |
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124 | { |
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125 | free(in); free(in8); |
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126 | goto out; |
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127 | } |
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128 | |
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129 | i = lang_index; |
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130 | // (1) try utf8 -> default |
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131 | rc = do_iconv(iconv_map[i].cpnames[0], "UTF-8", in8, strlen(in8), iconv_buf, MAX_ICONV_BUF); |
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132 | if(rc == ICONV_OK) |
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133 | { |
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134 | utf8_text = (unsigned char*)in8; |
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135 | free(iconv_buf); |
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136 | } |
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137 | else if(rc == ICONV_TRYNEXT) |
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138 | { |
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139 | // (2) try default -> utf8 |
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140 | rc = do_iconv("UTF-8", iconv_map[i].cpnames[0], in, strlen(in), iconv_buf, MAX_ICONV_BUF); |
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141 | if(rc == ICONV_OK) |
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142 | { |
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143 | utf8_text = (unsigned char*)iconv_buf; |
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144 | } |
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145 | else if(rc == ICONV_TRYNEXT) |
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146 | { |
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147 | // (3) try other encodes |
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148 | for(n = 1; n < N_LANG_ALT && iconv_map[i].cpnames[n]; n++) |
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149 | { |
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150 | rc = do_iconv("UTF-8", iconv_map[i].cpnames[n], in, strlen(in), iconv_buf, MAX_ICONV_BUF); |
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151 | if(rc == ICONV_OK) |
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152 | { |
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153 | utf8_text = (unsigned char*)iconv_buf; |
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154 | break; |
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155 | } |
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156 | } |
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157 | if(!utf8_text) |
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158 | { |
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159 | // cannot iconv |
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160 | utf8_text = (unsigned char*)id3_ucs4_utf8duplicate(native_text); |
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161 | free(iconv_buf); |
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162 | } |
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163 | } |
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164 | free(in8); |
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165 | } |
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166 | free(in); |
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167 | |
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168 | out: |
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169 | if(!utf8_text) |
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170 | { |
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171 | utf8_text = (unsigned char*)strdup("UNKNOWN"); |
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172 | } |
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173 | |
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174 | return utf8_text; |
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175 | } |
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176 | |
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177 | |
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178 | static void |
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179 | vc_scan(struct song_metadata *psong, const char *comment, const size_t length) |
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180 | { |
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181 | char strbuf[1024]; |
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182 | |
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183 | if(length > (sizeof(strbuf) - 1)) |
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184 | { |
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185 | if( strncasecmp(comment, "LYRICS=", 7) != 0 ) |
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186 | { |
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187 | DPRINTF(E_WARN, L_SCANNER, "Vorbis %.*s too long [%s]\n", (index(comment, '=')-comment), comment, psong->path); |
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188 | } |
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189 | return; |
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190 | } |
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191 | strncpy(strbuf, comment, length); |
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192 | strbuf[length] = '\0'; |
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193 | |
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194 | // ALBUM, ARTIST, PUBLISHER, COPYRIGHT, DISCNUMBER, ISRC, EAN/UPN, LABEL, LABELNO, |
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195 | // LICENSE, OPUS, SOURCEMEDIA, TITLE, TRACKNUMBER, VERSION, ENCODED-BY, ENCODING, |
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196 | // -- foollowing tags are muliples |
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197 | // COMPOSER, ARRANGER, LYRICIST, AUTHOR, CONDUCTOR, PERFORMER, ENSEMBLE, PART |
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198 | // PARTNUMBER, GENRE, DATE, LOCATION, COMMENT |
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199 | if(!strncasecmp(strbuf, "ALBUM=", 6)) |
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200 | { |
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201 | if( *(strbuf+6) ) |
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202 | psong->album = strdup(strbuf + 6); |
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203 | } |
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204 | else if(!strncasecmp(strbuf, "ARTIST=", 7)) |
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205 | { |
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206 | if( *(strbuf+7) ) |
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207 | psong->contributor[ROLE_ARTIST] = strdup(strbuf + 7); |
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208 | } |
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209 | else if(!strncasecmp(strbuf, "ARTISTSORT=", 11)) |
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210 | { |
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211 | psong->contributor_sort[ROLE_ARTIST] = strdup(strbuf + 11); |
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212 | } |
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213 | else if(!strncasecmp(strbuf, "TITLE=", 6)) |
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214 | { |
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215 | if( *(strbuf+6) ) |
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216 | psong->title = strdup(strbuf + 6); |
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217 | } |
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218 | else if(!strncasecmp(strbuf, "TRACKNUMBER=", 12)) |
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219 | { |
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220 | psong->track = atoi(strbuf + 12); |
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221 | } |
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222 | else if(!strncasecmp(strbuf, "DISCNUMBER=", 11)) |
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223 | { |
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224 | psong->disc = atoi(strbuf + 11); |
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225 | } |
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226 | else if(!strncasecmp(strbuf, "GENRE=", 6)) |
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227 | { |
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228 | if( *(strbuf+6) ) |
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229 | psong->genre = strdup(strbuf + 6); |
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230 | } |
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231 | else if(!strncasecmp(strbuf, "DATE=", 5)) |
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232 | { |
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233 | if(length >= (5 + 10) && |
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234 | isdigit(strbuf[5 + 0]) && isdigit(strbuf[5 + 1]) && ispunct(strbuf[5 + 2]) && |
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235 | isdigit(strbuf[5 + 3]) && isdigit(strbuf[5 + 4]) && ispunct(strbuf[5 + 5]) && |
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236 | isdigit(strbuf[5 + 6]) && isdigit(strbuf[5 + 7]) && isdigit(strbuf[5 + 8]) && isdigit(strbuf[5 + 9])) |
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237 | { |
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238 | // nn-nn-yyyy |
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239 | strbuf[5 + 10] = '\0'; |
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240 | psong->year = atoi(strbuf + 5 + 6); |
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241 | } |
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242 | else |
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243 | { |
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244 | // year first. year is at most 4 digit. |
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245 | strbuf[5 + 4] = '\0'; |
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246 | psong->year = atoi(strbuf + 5); |
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247 | } |
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248 | } |
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249 | else if(!strncasecmp(strbuf, "COMMENT=", 8)) |
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250 | { |
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251 | if( *(strbuf+8) ) |
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252 | psong->comment = strdup(strbuf + 8); |
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253 | } |
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254 | else if(!strncasecmp(strbuf, "MUSICBRAINZ_ALBUMID=", 20)) |
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255 | { |
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256 | psong->musicbrainz_albumid = strdup(strbuf + 20); |
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257 | } |
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258 | else if(!strncasecmp(strbuf, "MUSICBRAINZ_TRACKID=", 20)) |
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259 | { |
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260 | psong->musicbrainz_trackid = strdup(strbuf + 20); |
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261 | } |
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262 | else if(!strncasecmp(strbuf, "MUSICBRAINZ_TRACKID=", 20)) |
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263 | { |
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264 | psong->musicbrainz_trackid = strdup(strbuf + 20); |
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265 | } |
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266 | else if(!strncasecmp(strbuf, "MUSICBRAINZ_ARTISTID=", 21)) |
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267 | { |
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268 | psong->musicbrainz_artistid = strdup(strbuf + 21); |
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269 | } |
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270 | else if(!strncasecmp(strbuf, "MUSICBRAINZ_ALBUMARTISTID=", 26)) |
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271 | { |
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272 | psong->musicbrainz_albumartistid = strdup(strbuf + 26); |
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273 | } |
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274 | } |
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