Read searchquery from a search "file" (search tokenstream)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6372 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michiel Van Der Kolk
parent
9ceac0a293
commit
29909a341a
4 changed files with 45 additions and 58 deletions
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@ -19,18 +19,15 @@
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#ifndef DATABASE_H
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#define DATABASE_H
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/* workaround for cygwin not defining endian macros */
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#if !defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) && defined(_X86_)
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#define LITTLE_ENDIAN
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#endif
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#ifdef LITTLE_ENDIAN
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#ifdef ROCKBOX_LITTLE_ENDIAN
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#define BE32(_x_) (((_x_ & 0xff000000) >> 24) | \
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((_x_ & 0x00ff0000) >> 8) | \
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((_x_ & 0x0000ff00) << 8) | \
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((_x_ & 0x000000ff) << 24))
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((_x_ & 0x00ff0000) >> 8) | \
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((_x_ & 0x0000ff00) << 8) | \
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((_x_ & 0x000000ff) << 24))
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#define BE16(_x_) ( ((_x_&0xFF00) >> 8)|((_x_&0xFF)<<8))
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#else
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#define BE32(_x_) _x_
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#define BE16(_x_) _x_
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#endif
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#define SONGENTRY_SIZE (tagdbheader.songlen+12+tagdbheader.genrelen+4)
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@ -21,18 +21,18 @@
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#include "dbinterface.h"
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#include "parser.h"
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struct token *tokenbuffer,*currentToken;
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int currentindex;
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struct token *currentToken, curtoken;
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int syntaxerror;
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int parse_fd;
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char errormsg[250];
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unsigned char *parse(struct token *tokenbuf) {
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unsigned char *parse(int fd) {
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unsigned char *ret=0;
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currentindex=0;
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syntaxerror=0;
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tokenbuffer=tokenbuf;
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parse_fd=fd;
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database_init();
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currentToken=&tokenbuffer[currentindex];
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parser_acceptIt();
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currentToken=&curtoken;
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PUTS("parse");
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ret=parseMExpr();
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if(syntaxerror) {
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@ -45,7 +45,7 @@ unsigned char *parse(struct token *tokenbuf) {
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void parser_acceptIt(void) {
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if(syntaxerror) return;
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currentToken=&tokenbuffer[++currentindex];
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rb->read(parse_fd,&curtoken,sizeof(struct token));
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}
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int parser_accept(unsigned char kind) {
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@ -61,7 +61,7 @@ int parser_accept(unsigned char kind) {
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}
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unsigned char *parseCompareNum() {
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struct token *number1,*number2;
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struct token number1,number2;
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unsigned char *ret;
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int i,n1=-1,n2=-1;
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int op;
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@ -69,7 +69,7 @@ unsigned char *parseCompareNum() {
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PUTS("parseCompareNum");
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if(currentToken->kind==TOKEN_NUM ||
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currentToken->kind==TOKEN_NUMIDENTIFIER) {
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number1=currentToken;
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rb->memcpy(&number1,currentToken,sizeof(struct token));
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parser_acceptIt();
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}
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else {
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@ -88,7 +88,7 @@ unsigned char *parseCompareNum() {
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}
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if(currentToken->kind==TOKEN_NUM ||
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currentToken->kind==TOKEN_NUMIDENTIFIER) {
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number2=currentToken;
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rb->memcpy(&number2,currentToken,sizeof(struct token));
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parser_acceptIt();
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}
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else {
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@ -97,16 +97,16 @@ unsigned char *parseCompareNum() {
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return 0;
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}
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ret=my_malloc(sizeof(unsigned char)*rb->tagdbheader->filecount);
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if(number1->kind==TOKEN_NUM)
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n1=getvalue(number1);
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if(number2->kind==TOKEN_NUM)
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n2=getvalue(number2);
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if(number1.kind==TOKEN_NUM)
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n1=getvalue(&number1);
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if(number2.kind==TOKEN_NUM)
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n2=getvalue(&number2);
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for(i=0;i<rb->tagdbheader->filecount;i++) {
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loadentry(i);
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if(number1->kind==TOKEN_NUMIDENTIFIER)
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n1=getvalue(number1);
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if(number2->kind==TOKEN_NUMIDENTIFIER)
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n2=getvalue(number2);
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if(number1.kind==TOKEN_NUMIDENTIFIER)
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n1=getvalue(&number1);
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if(number2.kind==TOKEN_NUMIDENTIFIER)
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n2=getvalue(&number2);
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switch(op) {
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case TOKEN_GT:
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ret[i]=n1 > n2;
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@ -132,7 +132,7 @@ unsigned char *parseCompareNum() {
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}
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unsigned char *parseCompareString() {
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struct token *string1,*string2;
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struct token string1,string2;
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unsigned char *ret;
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char *s1=NULL,*s2=NULL;
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int i,contains;
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@ -140,7 +140,7 @@ unsigned char *parseCompareString() {
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PUTS("parseCompareString");
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if(currentToken->kind==TOKEN_STRING ||
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currentToken->kind==TOKEN_STRINGIDENTIFIER) {
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string1=currentToken;
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rb->memcpy(&string1,currentToken,sizeof(struct token));
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parser_acceptIt();
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}
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else {
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@ -161,7 +161,7 @@ unsigned char *parseCompareString() {
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if(currentToken->kind==TOKEN_STRING ||
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currentToken->kind==TOKEN_STRINGIDENTIFIER) {
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string2=currentToken;
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rb->memcpy(&string2,currentToken,sizeof(struct token));
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parser_acceptIt();
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}
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else {
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@ -170,16 +170,16 @@ unsigned char *parseCompareString() {
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return 0;
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}
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ret=my_malloc(sizeof(unsigned char)*rb->tagdbheader->filecount);
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if(string1->kind==TOKEN_STRING)
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s1=getstring(string1);
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if(string2->kind==TOKEN_STRING)
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s2=getstring(string2);
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if(string1.kind==TOKEN_STRING)
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s1=getstring(&string1);
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if(string2.kind==TOKEN_STRING)
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s2=getstring(&string2);
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for(i=0;i<rb->tagdbheader->filecount;i++) {
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loadentry(i);
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if(string1->kind==TOKEN_STRINGIDENTIFIER)
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s1=getstring(string1);
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if(string2->kind==TOKEN_STRINGIDENTIFIER)
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s2=getstring(string2);
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if(string1.kind==TOKEN_STRINGIDENTIFIER)
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s1=getstring(&string1);
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if(string2.kind==TOKEN_STRINGIDENTIFIER)
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s2=getstring(&string2);
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if(contains)
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ret[i]=rb->strcasestr(s1,s2)!=0;
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else
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@ -16,12 +16,11 @@
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* KIND, either express or implied.
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*
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****************************************************************************/
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extern struct token *tokenbuffer,*currentToken;
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extern struct token *currentToken;
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extern int syntaxerror;
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extern char errormsg[250];
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unsigned char *parse(struct token *tokenbuf);
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unsigned char *parse(int fd);
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void parser_acceptIt(void);
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int parser_accept(unsigned char kind);
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unsigned char *parseCompareNum(void);
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@ -50,19 +50,16 @@ void setmallocpos(void *pointer)
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audio_buffer_free = audio_bufferpointer - audio_bufferbase;
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}
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struct token tokenstream[10];
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/* this is the plugin entry point */
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enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
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{
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unsigned char *result,buf[500];
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int parsefd;
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/* this macro should be called as the first thing you do in the plugin.
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it test that the api version and model the plugin was compiled for
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matches the machine it is running on */
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TEST_PLUGIN_API(api);
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(void)parameter;
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/* if you are using a global api pointer, don't forget to copy it!
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otherwise you will get lovely "I04: IllInstr" errors... :-) */
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rb = api;
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@ -72,21 +69,15 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
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/* now go ahead and have fun! */
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PUTS("SearchEngine v0.1");
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tokenstream[0].kind=TOKEN_NUMIDENTIFIER;
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tokenstream[0].intvalue=INTVALUE_YEAR;
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tokenstream[1].kind=TOKEN_GTE;
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tokenstream[2].kind=TOKEN_NUM;
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tokenstream[2].intvalue=1980;
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tokenstream[3].kind=TOKEN_AND;
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tokenstream[4].kind=TOKEN_NUMIDENTIFIER;
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tokenstream[4].intvalue=INTVALUE_YEAR;
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tokenstream[5].kind=TOKEN_LT;
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tokenstream[6].kind=TOKEN_NUM;
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tokenstream[6].intvalue=1990;
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tokenstream[7].kind=TOKEN_EOF;
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result=parse(tokenstream);
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parsefd=rb->open(parameter,O_RDONLY);
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if(parsefd<0) {
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rb->splash(2*HZ,true,"Unable to open search tokenstream");
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return PLUGIN_ERROR;
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}
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result=parse(parsefd);
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rb->snprintf(buf,250,"Retval: 0x%x",result);
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PUTS(buf);
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rb->close(parsefd);
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if(result!=0) {
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int fd=rb->open("/search.m3u", O_WRONLY|O_CREAT|O_TRUNC);
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int i;
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