add pl_load and pl_eval for smart-playlist loading and evaluating
This commit is contained in:
Ron Pedde
parent
e6673b0f5d
commit
c8e62c0357
155
src/playlist.c
155
src/playlist.c
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@ -5,15 +5,22 @@
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#include <stdio.h>
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#include "err.h"
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#include "mp3-scanner.h"
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#include "playlist.h"
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#include "parser.h"
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/* Globals */
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SMART_PLAYLIST pl_smart = { NULL, NULL, NULL };
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int pl_error=0;
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/* Forwards */
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void pl_dump(void);
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void pl_dump_node(PL_NODE *pnode, int indent);
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int pl_load(char *file);
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int pl_eval_node(MP3FILE *pmp3, PL_NODE *pnode);
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extern FILE *yyin;
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/*
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* pl_dump
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@ -44,26 +51,26 @@ void pl_dump_node(PL_NODE *pnode, int indent) {
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printf(" ");
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}
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if(pnode->op == TOK_AND) {
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if(pnode->op == AND) {
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printf("AND\n");
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} else if (pnode->op == TOK_OR) {
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} else if (pnode->op == OR) {
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printf("OR\n");
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}
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if((pnode->op == TOK_AND) || (pnode->op == TOK_OR)) {
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if((pnode->op == AND) || (pnode->op == OR)) {
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pl_dump_node(pnode->arg1.plval,indent+1);
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pl_dump_node(pnode->arg2.plval,indent+1);
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return;
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}
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switch(pnode->arg1.ival) {
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case TOK_ARTIST:
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case ARTIST:
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printf("ARTIST ");
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break;
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case TOK_ALBUM:
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case ALBUM:
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printf("ALBUM ");
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break;
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case TOK_GENRE:
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case GENRE:
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printf("GENRE ");
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break;
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default:
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@ -76,11 +83,11 @@ void pl_dump_node(PL_NODE *pnode, int indent) {
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not=1;
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switch(boolarg) {
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case TOK_IS:
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printf("%s",not? "IS " : "IS NOT ");
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case IS:
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printf("%s",not? "IS NOT " : "IS ");
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break;
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case TOK_INCLUDES:
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printf("%s",not? "INCLUDES " : "DOES NOT INCLUDE ");
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case INCLUDES:
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printf("%s",not? "DOES NOT INCLUDE " : "INCLUDES ");
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break;
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default:
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printf("<unknown boolop> ");
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@ -90,3 +97,131 @@ void pl_dump_node(PL_NODE *pnode, int indent) {
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printf("%s\n",pnode->arg2.cval);
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return;
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}
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/*
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* pl_load
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*
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* Load a smart playlist
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*/
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int pl_load(char *file) {
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FILE *fin;
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SMART_PLAYLIST *pcurrent;
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int result;
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fin=fopen(file,"r");
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if(!fin) {
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return -1;
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}
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yyin=fin;
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result=yyparse();
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fclose(fin);
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if(pl_error) {
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return -1;
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}
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/* register the playlists */
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DPRINTF(ERR_INFO,"Finished loading smart playlists\n");
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pcurrent=pl_smart.next;
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while(pcurrent) {
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DPRINTF(ERR_INFO,"Adding smart playlist %s as %d\n",pcurrent->name,pcurrent->id)
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db_add_playlist(pcurrent->id, pcurrent->name);
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pcurrent=pcurrent->next;
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}
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return 0;
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}
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/*
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* pl_eval
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*
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* Run each MP3 file through the smart playlists
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*/
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void pl_eval(MP3FILE *pmp3) {
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SMART_PLAYLIST *pcurrent;
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pcurrent=pl_smart.next;
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while(pcurrent) {
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if(pl_eval_node(pmp3,pcurrent->root)) {
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DPRINTF(ERR_DEBUG,"Matched song to playlist %s (%d)\n",pcurrent->name,pcurrent->id);
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db_add_playlist_song(pcurrent->id, pmp3->id);
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}
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pcurrent=pcurrent->next;
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}
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}
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/*
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* pl_eval_node
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*
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* Test node status
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*/
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int pl_eval_node(MP3FILE *pmp3, PL_NODE *pnode) {
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int r_arg,r_arg2;
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int argtypec;
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char *argc;
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int boolarg;
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int not=0;
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int retval=0;
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if((pnode->op == AND) || (pnode->op == OR)) {
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r_arg=pl_eval_node(pmp3,pnode->arg1.plval);
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if((pnode->op == AND) && !r_arg)
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return 0;
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if((pnode->op == OR) && r_arg)
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return 1;
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r_arg2=pl_eval_node(pmp3,pnode->arg2.plval);
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if(pnode->op == AND)
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return r_arg && r_arg2;
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return r_arg || r_arg2;
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}
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/* Not an AND/OR node, so let's eval */
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switch(pnode->arg1.ival) {
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case ALBUM:
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argtypec=1;
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argc=pmp3->album;
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break;
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case ARTIST:
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argtypec=1;
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argc=pmp3->artist;
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break;
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case GENRE:
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argtypec=1;
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argc=pmp3->genre;
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break;
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}
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boolarg=(pnode->op) & 0x7FFFFFFF;
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if(pnode->op & 0x80000000)
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not=1;
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if(argtypec) {
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if(!argc)
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return not;
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DPRINTF(ERR_DEBUG,"Matching %s to %s\n",argc,pnode->arg2.cval);
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switch(boolarg) {
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case IS:
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r_arg=strcasecmp(argc,pnode->arg2.cval);
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retval = not ? r_arg : !r_arg;
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break;
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case INCLUDES:
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r_arg=strcasestr(argc,pnode->arg2.cval);
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retval = not ? !r_arg : r_arg;
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break;
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}
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}
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/* can't get here */
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DPRINTF(ERR_DEBUG,"Returning %d\n",retval);
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return retval;
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}
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@ -6,6 +6,8 @@
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#ifndef _PL_H_
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#define _PL_H_
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#include "mp3-scanner.h"
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typedef struct tag_pl_node {
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int op;
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union {
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@ -20,12 +22,17 @@ typedef struct tag_pl_node {
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typedef struct tag_smart_playlist {
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char *name;
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unsigned int id;
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PL_NODE *root;
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struct tag_smart_playlist *next;
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} SMART_PLAYLIST;
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extern SMART_PLAYLIST pl_smart;
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extern int pl_error;
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extern void pl_dump(void);
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extern int pl_load(char *file);
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extern void pl_eval(MP3FILE *pmp3);
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#endif /* _PL_H_ */
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