New plugin, search.rock, by Stefan Meyer (Patch #723682)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4874 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/search.c

@@ -0,0 +1,180 @@
+/***************************************************************************
+ *
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2003 Stefan Meyer
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "plugin.h"
+#include "ctype.h"
+
+static struct plugin_api* rb;
+
+#define BUFFER_SIZE 16384
+
+static int fd;
+static int fdw;
+
+static int file_size;
+static int results = 0;
+
+static char buffer[BUFFER_SIZE+1];
+static char search_string[60] ;
+
+static int buffer_pos; /* Position of the buffer in the file */
+
+static int line_end;   /* Index of the end of line */
+
+char resultfile[MAX_PATH];
+char path[MAX_PATH];
+
+static int strpcasecmp(const char *s1, const char *s2)
+{
+    while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) {
+        s1++;
+        s2++;
+    }
+    
+    return (*s1 == '\0') ;
+}
+
+static void fill_buffer(int pos)
+{
+    int numread;
+    int i;
+    int found = false ;
+    char crlf[2] = "\n\0"; 
+
+    if (pos>=file_size-BUFFER_SIZE)
+        pos = file_size-BUFFER_SIZE;
+    if (pos<0)
+        pos = 0;
+
+    rb->lseek(fd, pos, SEEK_SET);
+    numread = rb->read(fd, buffer, BUFFER_SIZE);
+
+    buffer[numread] = 0;
+    line_end = 0;
+
+    for(i=0;i<numread;i++) {
+	switch(buffer[i]) {
+	    case '\r':
+		buffer[i] = ' ';
+		break;
+            case '\n':
+		buffer[i] = 0;
+		buffer_pos = pos + i +1 ;
+
+		if (found)
+		{
+		    /* write to playlist */
+		    rb->write(fdw, &buffer[line_end],
+                              rb->strlen( &buffer[line_end] ));
+		    rb->write(fdw, &crlf,1);
+		    
+		    found = false ;
+		    results++ ;
+		}
+		line_end = i +1 ;
+                
+		break;
+                
+            default:
+	    	if (!found && tolower(buffer[i]) == tolower(search_string[0]))
+		{
+                    found = strpcasecmp(&search_string[0],&buffer[i]) ;
+		}
+		break;
+	}
+    }
+}
+
+static void search_buffer(void)
+{
+    buffer_pos = 0;
+ 
+    fill_buffer(0);
+    while ((buffer_pos+1) < file_size) {
+	fill_buffer(buffer_pos);	
+    }
+}
+
+static bool search_init(char* file)
+{
+    if (!rb->kbd_input(search_string,sizeof search_string))
+    {
+        rb->lcd_clear_display();
+        rb->splash(0, true, "Searching...");	
+        fd = rb->open(file, O_RDONLY);
+        if (fd==-1)
+            return false;
+
+        fdw = rb->creat(resultfile,0);
+
+        if (fdw < 0) {
+#ifdef HAVE_LCD_BITMAP
+            rb->splash(HZ, true, "Failed to create result file!");
+#else
+            rb->splash(HZ, true, "File creation failed");
+#endif
+            return false;
+        }
+   
+        file_size = rb->lseek(fd, 0, SEEK_END);
+
+        return true;
+    }
+    
+    return false ;
+}
+
+/* this is the plugin entry point */
+enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
+{
+    int ok;
+    char *filename = parameter;
+    char *p;
+
+    TEST_PLUGIN_API(api);
+
+    rb = api;
+
+    /* Check the extension. We only allow .m3u files. */
+    if(!strpcasecmp(&filename[rb->strlen(filename)-4], ".m3u")) {
+        rb->splash(HZ, true, "Not a .m3u file");
+        return PLUGIN_ERROR;
+    }
+
+    rb->strcpy(path, filename);
+    
+    p = rb->strrchr(path, '/');
+    if(p)
+        *p = 0;
+
+    rb->snprintf(resultfile, MAX_PATH, "%s/search_result.m3u", path, p+1);
+    ok = search_init(parameter);
+    if (!ok) {
+    	return PLUGIN_ERROR;
+    }
+    search_buffer();
+
+    rb->lcd_clear_display();
+    rb->splash(HZ, true, "Done");
+    rb->close(fdw);
+    rb->close(fd);
+
+    /* We fake a USB connection to force a reload of the file browser */
+    return PLUGIN_USB_CONNECTED;
+}

apps/plugins/viewers.config

@@ -4,3 +4,4 @@ jpg,jpeg.rock,18 24 3C 3C 24 18
 ucl,rockbox_flash.rock,2A 7F 41 41 7F 2A
 rvf,video.rock,5D 7F 5D 7F 5D 7F
 mp3,vbrfix.rock,10 08 58 38 04 02
+m3u,search.rock,00 00 00 00 00 00