1 /*
2 textfunc.c - Handles most console I/O and interface tasks
3
4 Copyright (C) 2000-2006 Cedric Tefft <cedric@phreaker.net>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19
20 ***************************************************************************
21
22 This program is based in part on MP3Info 0.5 by Ricardo Cerqueira <rmc@rccn.net>
23
24 */
25
26 #include "mp3info.h"
27
28 char *layer_text[] = {
29 "I", "II", "III"
30 };
31
32 /*
33 * Name of this one is quite obvious...
34 */
35
CenterText(int line,char * text)36 void CenterText(int line, char *text) {
37 mvprintw(line,(COLS/2)-((int)strlen(text)/2),text);
38 }
39
40 /* Convert hex digit to integer */
41
xtoi(char * string)42 int xtoi(char *string) {
43 char chr=toupper(string[0]);
44
45 if(chr > '9')
46 return (int) (chr - 'A' + 10);
47 else
48 return (int) (chr - '0');
49 }
50
51
52
53 /*
54 * Another one with an obvious name :-)
55 */
56
display_help()57 void display_help() {
58
59 printf("%s %s\n\nUSAGE:\n\n",VERSION,COPYRIGHT);
60 printf("\tmp3info [ -h | -G ]\n"\
61 "\n\tmp3info [-x] [-F] [-r a|m|v] [-p FORMAT_STRING] file(s)\n"\
62 "\n\tmp3info [-d] file(s)\n"\
63 "\n\tmp3info [-i] [-t title] [-a artist] [-l album] [-y year]\n"\
64 "\t\t[-c comment] [-n track] [-g genre] file(s)\n"\
65 "\nOPTIONS\n"\
66 "\t-a artist\tSpecify ID3 artist name\n"\
67 "\t-c comment\tSpecify ID3 comment\n"\
68 "\t-g genre\tSpecify ID3 genre (use -G for genre list)\n"\
69 "\t-l album\tSpecify ID3 album name\n"\
70 "\t-n track\tSpecify ID3 v1.1 track number\n"\
71 "\t-t title\tSpecify ID3 track title\n"\
72 "\t-y year\t\tSpecify ID3 copyright year\n\n"\
73 "\t-G\t\tDisplay valid genres\n"\
74 "\t-h\t\tDisplay this help page\n"\
75 "\t-x\t\tDisplay technical attributes of the MP3 file\n"\
76 "\t-r a|m|v\tReport bit rate of (VBR) files as:\n"\
77 "\t\ta - Average bit rate (float)\n"\
78 "\t\tm - Median bit rate (integer)\n"\
79 "\t\tv - Simply use the word 'Variable' (string) [default]\n\n"\
80 "\t-i\t\tEdit ID3 tag interactively\n"\
81 "\t-d\t\tDelete ID3 tag (if one exists)\n"\
82 "\t-f\t\tForce processing if file is not a standard MP3\n"\
83 "\t-F\t\tFull Scan (see man page for details)\n"\
84 "\n\n\t-p \"FORMAT_STRING\" Print FORMAT_STRING with substitutions\n"\
85 "\n\t\tConversion Specifiers\n\n"\
86 "\t\t%%f\tFilename without the path (string)\n"\
87 "\t\t%%F\tFilename with the path (string)\n"\
88 "\t\t%%k\tFile size in KB (integer)\n"\
89 "\n\t\t%%a\tArtist (string)\n"\
90 "\t\t%%c\tComment (string)\n"\
91 "\t\t%%g\tMusical genre (string)\n"\
92 "\t\t%%G\tMusical genre (integer)\n"\
93 "\t\t%%l\tAlbum name (string)\n"\
94 "\t\t%%n\tTrack (integer)\n"\
95 "\t\t%%t\tTrack Title (string)\n"\
96 "\t\t%%y\tYear (string)\n"\
97 "\n\t\t%%C\tCopyright flag (string)\n"\
98 "\t\t%%e\tEmphasis (string)\n"\
99 "\t\t%%E\tCRC Error protection (string)\n"\
100 "\t\t%%L\tMPEG Layer (string)\n"\
101 "\t\t%%O\tOriginal material flag (string)\n"\
102 "\t\t%%o\tStereo/mono mode (string)\n"\
103 "\t\t%%p\tPadding (string)\n"\
104 "\t\t%%v\tMPEG Version (float)\n"\
105 "\n\t\t%%u\tNumber of good audio frames (integer)\n"\
106 "\t\t%%b\tNumber of corrupt audio frames (integer)\n"\
107 "\t\t%%Q\tSampling frequency in Hz (integer)\n"\
108 "\t\t%%q\tSampling frequency in KHz (integer)\n"\
109 "\t\t%%r\tBit Rate in KB/s (see also '-r')\n"\
110 "\n\t\t%%m\tPlaying time: minutes only (integer)\n"\
111 "\t\t%%s\tPlaying time: seconds only (integer)\n"\
112 "\t\t%%S\tTotal playing time in seconds (integer)\n"\
113 "\n\t\t%%%%\tA single percent sign\n"\
114 "\n\t\tEscape Sequences\n\n"\
115 "\t\t\\n\tNewline\n"\
116 "\t\t\\t\tHorizontal tab\n"\
117 "\t\t\\v\tVertical tab\n"\
118 "\t\t\\b\tBackspace\n"\
119 "\t\t\\r\tCarriage Return\n"\
120 "\t\t\\f\tForm Feed\n"\
121 "\t\t\\a\tAudible Alert (terminal bell)\n"\
122 "\t\t\\xhh\tAny arbitrary character specified by the\n"\
123 "\t\t\thexidecimal number hh\n"\
124 "\t\t\\ooo\tAny arbitrary character specified by the\n"\
125 "\t\t\toctal number ooo\n"\
126 "\t\t\\\\\tA single backslash character\n\n"\
127 "This help screen is only a summary of command-line switches\n"\
128 "See the man page for complete documentation.\n\n");
129
130 }
131
display_genres(int alphagenreindex[],char * typegenre[])132 void display_genres(int alphagenreindex[],char *typegenre[]) {
133 int i,j,index;
134 printf("Extended MP3 ID3 Genres\n=======================\n");
135 for(i=0;i<GENREROWS;i++) {
136 for(j=0;j<3;j++) {
137 index=(GENREROWS*j)+i;
138 if(index <= MAXGENRE) {
139 printf("%3d %-21s ",alphagenreindex[index],typegenre[alphagenreindex[index]]);
140 }
141 }
142 printf("\n");
143 }
144 }
145
get_genre(char * genre)146 unsigned int get_genre (char *genre) {
147 int num_genre=0;
148
149 if(genre[0] == '\0') { return 255; }
150
151 sscanf(genre,"%u",&num_genre);
152 if(num_genre == 0) {
153 if(genre[0] != '0') {
154 while(num_genre++ <= MAXGENRE) {
155 if(!strcasecmp(genre,typegenre[num_genre-1])) {
156 return num_genre-1;
157 }
158 }
159 num_genre=256;
160 }
161 }
162
163 if(num_genre < 0 || num_genre > MAXGENRE) {
164 num_genre=256;
165 }
166 return num_genre;
167 }
168
text_genre(unsigned char * genre,char * buffer)169 void text_genre(unsigned char *genre,char *buffer) {
170 int genre_num = (int) genre[0];
171
172 if(genre_num <= MAXGENRE) {
173 sprintf(buffer,"%s",typegenre[genre_num]);
174 } else if(genre_num < 255) {
175 sprintf(buffer,"(UNKNOWN) [%d]",genre_num);
176 } else {
177 buffer[0]='\0';
178 }
179 }
180
determine_tasks(char * format_string,int * want_id3,int * scantype,int * fullscan_vbr,int vbr_report)181 void determine_tasks (char *format_string,int *want_id3,int *scantype, int *fullscan_vbr,int vbr_report) {
182
183 char *format=format_string;
184 char *percent;
185 while((percent=strchr(format,'%'))) {
186 percent++;
187 while(*percent && (percent[0] != '%' && !isalpha(*percent))) percent++;
188 switch (percent[0]) {
189 case 't':
190 case 'a':
191 case 'l':
192 case 'y':
193 case 'c':
194 case 'n':
195 case 'g':
196 case 'G': *want_id3=1; break;
197 case 'm':
198 case 's':
199 case 'u':
200 case 'S': *fullscan_vbr=1;
201 case 'r': if(vbr_report != VBR_VARIABLE) *fullscan_vbr=1;
202 case 'q':
203 case 'Q':
204 case 'e':
205 case 'E':
206 case 'C':
207 case 'O':
208 case 'v':
209 case 'L':
210 case 'p':
211 case 'o': if(*scantype != SCAN_FULL)
212 *scantype=SCAN_QUICK;
213 break;
214 case 'b': *scantype=SCAN_FULL; break;
215 }
216 format=percent+1;
217 }
218 }
219
220
format_output(char * format_string,mp3info * mp3,int vbr_report)221 void format_output (char *format_string,mp3info *mp3, int vbr_report) {
222
223 char genre[40]="";
224 char mod[1000],*percent,*pos,*code;
225 char *format=format_string;
226 int modlen;
227
228 while((percent=strchr(format,'%'))) {
229 *percent=0;
230 printf(format);
231 *percent='%';
232 code=percent+1;
233 while(*code && (code[0] != '%' && !isalpha(*code))) code++;
234
235 if(*code) {
236 modlen=code-percent+1;
237 if(modlen > 1000) {
238 printf("Format modifier beginning at position %d too long!\n",(int)(percent-format));
239 exit(5);
240 }
241 strncpy(mod,percent,modlen);
242 mod[modlen]=0;
243 mod[modlen-1]='s';
244 switch (*code) {
245 case 't': printf(mod,mp3->id3.title); break;
246 case 'f': pos = (pos=strrchr(mp3->filename,'/')) ?
247 pos+1 : mp3->filename;
248 printf(mod,pos); break;
249 case 'F': printf(mod,mp3->filename); break;
250 case 'a': printf(mod,mp3->id3.artist); break;
251 case 'l': printf(mod,mp3->id3.album); break;
252 case 'k': mod[modlen-1] = 'd'; printf(mod,mp3->datasize / 1024); break;
253 case 'y': printf(mod,mp3->id3.year); break;
254 case 'c': printf(mod,mp3->id3.comment); break;
255 case 'n': if(mp3->id3_isvalid && mp3->id3.track[0]) {
256 mod[modlen-1]='d';
257 printf(mod, (int) mp3->id3.track[0]);
258 }
259 break;
260 case 'g': if(mp3->id3_isvalid) {
261 text_genre(mp3->id3.genre,genre);
262 printf(mod,genre);
263 }
264 break;
265 case 'G': if(mp3->id3_isvalid) {
266 mod[modlen-1]='d';
267 printf(mod,(int) mp3->id3.genre[0]);
268 }
269 break;
270 case 'r': if(mp3->header_isvalid) {
271 if(mp3->vbr && (vbr_report == VBR_VARIABLE))
272 printf(mod,"Variable");
273 else if(vbr_report == VBR_AVERAGE) {
274 mod[modlen-1]='f';
275 printf(mod,mp3->vbr_average);
276 } else {
277 mod[modlen-1]='d';
278 printf(mod,header_bitrate(&mp3->header));
279 }
280 }
281 break;
282 case 'q': if(mp3->header_isvalid) {
283 mod[modlen-1]='d';
284 printf(mod,header_frequency(&mp3->header)/1000);
285 }
286 break;
287 case 'Q': if(mp3->header_isvalid) {
288 mod[modlen-1]='d';
289 printf(mod,header_frequency(&mp3->header));
290 }
291 break;
292 case 'e': if(mp3->header_isvalid) {
293 printf(mod,header_emphasis(&mp3->header));
294 }
295 break;
296 case 'E': if(mp3->header_isvalid) {
297 printf(mod,!mp3->header.crc ? "Yes" : "No");
298 }
299 break;
300 case 'C': if(mp3->header_isvalid) {
301 printf(mod,mp3->header.copyright ? "Yes" : "No");
302 }
303 break;
304 case 'O': if(mp3->header_isvalid) {
305 printf(mod,mp3->header.original ? "Yes" : "No");
306 }
307 break;
308 case 'm': if(mp3->header_isvalid) {
309 mod[modlen-1]='d';
310 printf(mod,mp3->seconds / 60);
311 }
312 break;
313 case 's': if(mp3->header_isvalid) {
314 mod[modlen-1]='d';
315 printf(mod,mp3->seconds % 60);
316 }
317 break;
318 case 'S': if(mp3->header_isvalid) {
319 mod[modlen-1]='d';
320 printf(mod,mp3->seconds);
321 }
322 break;
323 case 'v': if(mp3->header_isvalid) {
324 mod[modlen-1]='f';
325 printf(mod,mp3->header.version ? ((mp3->header.version==2) ? 2.5 : 1.0) : 2.0);
326 }
327 break;
328 case 'L': if(mp3->header_isvalid) {
329 printf(mod,layer_text[header_layer(&mp3->header)-1]);
330 }
331 break;
332 case 'o': if(mp3->header_isvalid) {
333 printf(mod,header_mode(&mp3->header));
334 }
335 break;
336 case 'p': if(mp3->header_isvalid) {
337 printf(mod,mp3->header.padding ? "Yes" : "No");
338 }
339 break;
340 case 'u': if(mp3->header_isvalid) {
341 mod[modlen-1]='d';
342 printf(mod,mp3->frames);
343 }
344 break;
345 case 'b': if(mp3->header_isvalid) {
346 mod[modlen-1]='d';
347 printf(mod,mp3->badframes);
348 }
349 break;
350 case '%': printf("%%"); break;
351 default: printf("%%%c",*(code=percent+1)); break;
352 }
353 format=code+1;
354 }
355
356 }
357 printf(format);
358 }
359
360
361
translate_escapes(char * string)362 void translate_escapes (char *string) {
363 char *read=string;
364 char *write=string;
365 int val;
366
367 while(*read) {
368 if(*read == '\\') {
369 read++;
370 switch (*read) {
371 case 'n': *(write++)='\n'; read++; break;
372 case 't': *(write++)='\t'; read++; break;
373 case 'v': *(write++)='\v'; read++; break;
374 case 'b': *(write++)='\b'; read++; break;
375 case 'r': *(write++)='\r'; read++; break;
376 case 'f': *(write++)='\f'; read++; break;
377 case 'a': *(write++)='\a'; read++; break;
378 case 'X':
379 case 'x': read++; /* HEX */
380 val=0;
381 if(isxdigit(*read)) val=xtoi(read++);
382 if(isxdigit(*read)) val=(val*16) + xtoi(read++);
383 *(write++)=(val % 256);
384 default: if(*read <= '7' && *read >= '0') { /* octal */
385 val=xtoi(read++);
386 if(*read <= '7' && *read >= '0') val=(val*8) + xtoi(read++);
387 if(*read <= '7' && *read >= '0') val=(val*8) + xtoi(read++);
388 *(write++)=(val % 256);
389 } else {
390 *(write++)=*(read++); break;
391 }
392 }
393 } else {
394 *write++=*read++;
395 }
396
397 }
398 *write=0;
399 }
400
401