Read searchquery from a search "file" (search tokenstream)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6372 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 39 insertions, 49 deletions

diff --git a/apps/plugins/searchengine/parser.c b/apps/plugins/searchengine/parser.c
index 501450c..cbedeb3 100644
--- a/apps/plugins/searchengine/parser.c
+++ b/apps/plugins/searchengine/parser.c
@@ -21,18 +21,18 @@
 #include "dbinterface.h"
 #include "parser.h"
 
-struct token *tokenbuffer,*currentToken;
-int currentindex;
+struct token *currentToken, curtoken;
 int syntaxerror;
+int parse_fd;
 char errormsg[250];
 
-unsigned char *parse(struct token *tokenbuf) {
+unsigned char *parse(int fd) {
 	unsigned char *ret=0;
-	currentindex=0;
 	syntaxerror=0;
-	tokenbuffer=tokenbuf;
+	parse_fd=fd;
 	database_init();
-	currentToken=&tokenbuffer[currentindex];
+	parser_acceptIt();
+	currentToken=&curtoken;
 	PUTS("parse");
 	ret=parseMExpr();
 	if(syntaxerror) {
@@ -45,7 +45,7 @@ unsigned char *parse(struct token *tokenbuf) {
 
 void parser_acceptIt(void) {
         if(syntaxerror) return;
-	currentToken=&tokenbuffer[++currentindex];
+	rb->read(parse_fd,&curtoken,sizeof(struct token));
 }
 
 int parser_accept(unsigned char kind) {
@@ -61,7 +61,7 @@ int parser_accept(unsigned char kind) {
 }
 
 unsigned char *parseCompareNum() {
-	struct token *number1,*number2;
+	struct token number1,number2;
 	unsigned char *ret;
 	int i,n1=-1,n2=-1;
 	int op;
@@ -69,7 +69,7 @@ unsigned char *parseCompareNum() {
         PUTS("parseCompareNum");
         if(currentToken->kind==TOKEN_NUM ||
 		currentToken->kind==TOKEN_NUMIDENTIFIER) {
-	   number1=currentToken;	
+	   rb->memcpy(&number1,currentToken,sizeof(struct token));
 	   parser_acceptIt();
 	}
 	else {
@@ -88,7 +88,7 @@ unsigned char *parseCompareNum() {
 	}
         if(currentToken->kind==TOKEN_NUM ||
                 currentToken->kind==TOKEN_NUMIDENTIFIER) {
-           number2=currentToken;
+           rb->memcpy(&number2,currentToken,sizeof(struct token));
            parser_acceptIt();
         }
         else {
@@ -97,16 +97,16 @@ unsigned char *parseCompareNum() {
 	   return 0;
 	}
 	ret=my_malloc(sizeof(unsigned char)*rb->tagdbheader->filecount);
-	if(number1->kind==TOKEN_NUM)
-		n1=getvalue(number1);
-	if(number2->kind==TOKEN_NUM)
-		n2=getvalue(number2);
+	if(number1.kind==TOKEN_NUM)
+		n1=getvalue(&number1);
+	if(number2.kind==TOKEN_NUM)
+		n2=getvalue(&number2);
 	for(i=0;i<rb->tagdbheader->filecount;i++) {
 		loadentry(i);
-		if(number1->kind==TOKEN_NUMIDENTIFIER)
-		  n1=getvalue(number1);
-		if(number2->kind==TOKEN_NUMIDENTIFIER)
-		  n2=getvalue(number2);
+		if(number1.kind==TOKEN_NUMIDENTIFIER)
+		  n1=getvalue(&number1);
+		if(number2.kind==TOKEN_NUMIDENTIFIER)
+		  n2=getvalue(&number2);
 		switch(op) {
 			case TOKEN_GT:
 				ret[i]=n1 > n2;
@@ -132,7 +132,7 @@ unsigned char *parseCompareNum() {
 }
 
 unsigned char *parseCompareString() {
-        struct token *string1,*string2;
+        struct token string1,string2;
         unsigned char *ret;
 	char *s1=NULL,*s2=NULL;
         int i,contains;
@@ -140,7 +140,7 @@ unsigned char *parseCompareString() {
         PUTS("parseCompareString");
         if(currentToken->kind==TOKEN_STRING ||
                 currentToken->kind==TOKEN_STRINGIDENTIFIER) {
-           string1=currentToken;
+	   rb->memcpy(&string1,currentToken,sizeof(struct token));
            parser_acceptIt();
         }
         else {
@@ -161,7 +161,7 @@ unsigned char *parseCompareString() {
 	
         if(currentToken->kind==TOKEN_STRING ||
                 currentToken->kind==TOKEN_STRINGIDENTIFIER) {
-           string2=currentToken;
+	   rb->memcpy(&string2,currentToken,sizeof(struct token));
            parser_acceptIt();
         }
         else {
@@ -170,16 +170,16 @@ unsigned char *parseCompareString() {
 	   return 0;
         }
         ret=my_malloc(sizeof(unsigned char)*rb->tagdbheader->filecount);
-	if(string1->kind==TOKEN_STRING)
-		s1=getstring(string1);
-	if(string2->kind==TOKEN_STRING)
-		s2=getstring(string2);
+	if(string1.kind==TOKEN_STRING)
+		s1=getstring(&string1);
+	if(string2.kind==TOKEN_STRING)
+		s2=getstring(&string2);
         for(i=0;i<rb->tagdbheader->filecount;i++) {
                 loadentry(i);
-		if(string1->kind==TOKEN_STRINGIDENTIFIER)
-                  s1=getstring(string1);
-		if(string2->kind==TOKEN_STRINGIDENTIFIER)
-                  s2=getstring(string2);
+		if(string1.kind==TOKEN_STRINGIDENTIFIER)
+                  s1=getstring(&string1);
+		if(string2.kind==TOKEN_STRINGIDENTIFIER)
+                  s2=getstring(&string2);
 		if(contains)
 	          ret[i]=rb->strcasestr(s1,s2)!=0;
 		else
diff --git a/apps/plugins/searchengine/parser.h b/apps/plugins/searchengine/parser.h
index e9c36d3..b40a6ae 100644
--- a/apps/plugins/searchengine/parser.h
+++ b/apps/plugins/searchengine/parser.h
@@ -16,12 +16,11 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
-extern struct token *tokenbuffer,*currentToken;
-
+extern struct token *currentToken;
 extern int syntaxerror;
 extern char errormsg[250];
 
-unsigned char *parse(struct token *tokenbuf);
+unsigned char *parse(int fd);
 void parser_acceptIt(void);
 int parser_accept(unsigned char kind);
 unsigned char *parseCompareNum(void);
diff --git a/apps/plugins/searchengine/searchengine.c b/apps/plugins/searchengine/searchengine.c
index 5065da7..0cb090e 100644
--- a/apps/plugins/searchengine/searchengine.c
+++ b/apps/plugins/searchengine/searchengine.c
@@ -50,19 +50,16 @@ void setmallocpos(void *pointer)
     audio_buffer_free = audio_bufferpointer - audio_bufferbase;
 }
 
-struct token tokenstream[10];
-
 /* this is the plugin entry point */
 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 {
     unsigned char *result,buf[500];
+    int parsefd;
     /* this macro should be called as the first thing you do in the plugin.
        it test that the api version and model the plugin was compiled for
        matches the machine it is running on */
     TEST_PLUGIN_API(api);
 
-    (void)parameter;
-
     /* if you are using a global api pointer, don't forget to copy it!
        otherwise you will get lovely "I04: IllInstr" errors... :-) */
     rb = api;
@@ -72,21 +69,15 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 
     /* now go ahead and have fun! */
     PUTS("SearchEngine v0.1");
-    tokenstream[0].kind=TOKEN_NUMIDENTIFIER;
-    tokenstream[0].intvalue=INTVALUE_YEAR;
-    tokenstream[1].kind=TOKEN_GTE;
-    tokenstream[2].kind=TOKEN_NUM;
-    tokenstream[2].intvalue=1980;
-    tokenstream[3].kind=TOKEN_AND;
-    tokenstream[4].kind=TOKEN_NUMIDENTIFIER;
-    tokenstream[4].intvalue=INTVALUE_YEAR;
-    tokenstream[5].kind=TOKEN_LT;
-    tokenstream[6].kind=TOKEN_NUM;
-    tokenstream[6].intvalue=1990;
-    tokenstream[7].kind=TOKEN_EOF;
-    result=parse(tokenstream);
+    parsefd=rb->open(parameter,O_RDONLY);
+    if(parsefd<0) {
+        rb->splash(2*HZ,true,"Unable to open search tokenstream");
+	return PLUGIN_ERROR;	
+    }
+    result=parse(parsefd);
     rb->snprintf(buf,250,"Retval: 0x%x",result);
     PUTS(buf);
+    rb->close(parsefd);
     if(result!=0) {
 	int fd=rb->open("/search.m3u", O_WRONLY|O_CREAT|O_TRUNC);
 	int i;