1 | //========================================================================= |
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2 | // FILENAME : playlist.c |
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3 | // DESCRIPTION : Playlist |
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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 | /* |
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9 | * This program is free software; you can redistribute it and/or modify |
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10 | * it under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; either version 2 of the License, or |
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12 | * (at your option) any later version. |
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13 | * |
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14 | * This program is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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21 | */ |
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22 | |
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23 | #include <stdio.h> |
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24 | #include <string.h> |
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25 | #include <ctype.h> |
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26 | |
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27 | #include "misc.h" |
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28 | #include "tagutils.h" |
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29 | #include "textutils.h" |
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30 | #include "log.h" |
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31 | |
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32 | |
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33 | #define MAX_BUF 4096 |
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34 | |
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35 | static FILE *fp = 0; |
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36 | static int _utf8bom = 0; |
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37 | static int _trackno; |
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38 | |
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39 | static int (*_next_track)(struct song_metadata*, struct stat*, char*, char*); |
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40 | static int _m3u_next_track(struct song_metadata*, struct stat*, char*, char*); |
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41 | static int _pls_next_track(struct song_metadata*, struct stat*, char*, char*); |
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42 | |
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43 | int |
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44 | start_plist(const char *path, struct song_metadata *psong, struct stat *stat, char *lang, char *type) |
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45 | { |
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46 | char *fname, *suffix; |
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47 | |
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48 | _next_track = 0; |
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49 | _utf8bom = 0; |
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50 | _trackno = 0; |
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51 | |
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52 | if(strcasecmp(type, "m3u") == 0) |
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53 | _next_track = _m3u_next_track; |
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54 | else if(strcasecmp(type, "pls") == 0) |
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55 | _next_track = _pls_next_track; |
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56 | |
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57 | if(!_next_track) |
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58 | { |
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59 | DPRINTF(E_ERROR, L_SCANNER, "Unsupported playlist type <%s> (%s)\n", type, path); |
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60 | return -1; |
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61 | } |
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62 | |
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63 | if(!(fp = fopen(path, "rb"))) |
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64 | { |
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65 | DPRINTF(E_ERROR, L_SCANNER, "Cannot open %s\n", path); |
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66 | return -1; |
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67 | } |
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68 | |
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69 | if(!psong) |
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70 | return 0; |
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71 | |
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72 | memset((void*)psong, 0, sizeof(struct song_metadata)); |
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73 | psong->is_plist = 1; |
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74 | psong->path = strdup(path); |
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75 | psong->type = type; |
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76 | |
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77 | fname = strrchr(psong->path, '/'); |
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78 | psong->basename = fname ? fname + 1 : psong->path; |
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79 | |
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80 | psong->title = strdup(psong->basename); |
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81 | suffix = strrchr(psong->title, '.'); |
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82 | if(suffix) *suffix = '\0'; |
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83 | |
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84 | if(stat) |
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85 | { |
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86 | if(!psong->time_modified) |
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87 | psong->time_modified = stat->st_mtime; |
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88 | psong->file_size = stat->st_size; |
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89 | } |
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90 | |
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91 | return 0; |
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92 | } |
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93 | |
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94 | int |
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95 | _m3u_next_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type) |
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96 | { |
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97 | char buf[MAX_BUF], *p; |
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98 | int len; |
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99 | |
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100 | // |
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101 | memset((void*)psong, 0, sizeof(struct song_metadata)); |
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102 | |
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103 | // read first line, check BOM |
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104 | p = fgets(buf, MAX_BUF, fp); |
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105 | if(!p) |
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106 | { |
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107 | fclose(fp); |
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108 | return 1; |
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109 | } |
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110 | |
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111 | if(!_utf8bom && p[0] == '\xef' && p[1] == '\xbb' && p[2] == '\xbf') |
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112 | { |
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113 | _utf8bom = 1; |
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114 | p += 3; |
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115 | } |
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116 | |
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117 | while(p) |
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118 | { |
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119 | while(isspace(*p)) p++; |
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120 | |
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121 | if(!isprint(*p)) |
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122 | { |
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123 | DPRINTF(E_ERROR, L_SCANNER, "Playlist looks bad (unprintable characters)\n"); |
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124 | fclose(fp); |
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125 | return 2; |
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126 | } |
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127 | |
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128 | if(*p && *p != '#') |
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129 | { |
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130 | // check dos format |
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131 | len = strlen((char*)p); |
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132 | |
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133 | while(p[len - 1] == '\r' || p[len - 1] == '\n') |
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134 | { |
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135 | p[--len] = '\0'; |
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136 | } |
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137 | psong->path = strdup(p); |
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138 | psong->track = ++_trackno; |
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139 | return 0; |
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140 | } |
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141 | p = fgets(buf, MAX_BUF, fp); |
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142 | continue; |
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143 | } |
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144 | |
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145 | fclose(fp); |
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146 | return 1; |
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147 | } |
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148 | |
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149 | int |
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150 | _pls_next_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type) |
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151 | { |
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152 | char buf[MAX_BUF], *p; |
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153 | int len; |
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154 | |
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155 | memset((void*)psong, 0, sizeof(struct song_metadata)); |
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156 | |
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157 | // read first line |
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158 | p = fgets(buf, MAX_BUF, fp); |
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159 | |
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160 | while(p) |
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161 | { |
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162 | while(isspace(*p)) p++; |
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163 | |
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164 | if(!isprint(*p)) |
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165 | { |
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166 | DPRINTF(E_ERROR, L_SCANNER, "Playlist looks bad (unprintable characters)\n"); |
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167 | fclose(fp); |
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168 | return 2; |
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169 | } |
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170 | |
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171 | if(*p && *p != '#') |
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172 | { |
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173 | // verify that it's a valid pls playlist |
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174 | if(!_trackno) |
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175 | { |
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176 | if(strncmp(p, "[playlist]", 10)) |
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177 | break; |
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178 | _trackno++; |
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179 | goto next_line; |
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180 | } |
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181 | |
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182 | if(strncmp(p, "File", 4)) |
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183 | goto next_line; |
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184 | |
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185 | psong->track = strtol(p+4, &p, 10); |
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186 | if(!psong->track || !p) |
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187 | goto next_line; |
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188 | _trackno = psong->track; |
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189 | // check dos format |
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190 | len = strlen(++p); |
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191 | |
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192 | while(p[len - 1] == '\r' || p[len - 1] == '\n') |
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193 | { |
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194 | p[--len] = '\0'; |
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195 | } |
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196 | psong->path = strdup(p); |
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197 | return 0; |
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198 | } |
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199 | next_line: |
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200 | p = fgets(buf, MAX_BUF, fp); |
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201 | } |
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202 | |
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203 | fclose(fp); |
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204 | return 1; |
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205 | } |
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206 | |
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207 | int |
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208 | next_plist_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type) |
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209 | { |
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210 | if(_next_track) |
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211 | return _next_track(psong, stat, lang, type); |
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212 | return -1; |
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213 | } |
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