Added Gary's snprintf() and changed all places to use it.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@379 a1c6a512-1295-4272-9138-f99709370657

firmware/Makefile

@@ -33,7 +33,7 @@ OBJS := $(SRC:%.c=%.o)
 all : archos.mod # archos.asm 
 
 archos.elf : $(OBJS) app.lds
-	$(CC) -nostdlib -o archos.elf $(OBJS) -lgcc -Tapp.lds -Wl,-Map,archos.map
+	$(CC) -nostdlib -o archos.elf $(OBJS) -lgcc -lc -Tapp.lds -Wl,-Map,archos.map
 
 archos.bin : archos.elf
 	$(OC) -O binary archos.elf archos.bin

firmware/common/sprintf.c

@@ -0,0 +1,127 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Gary Czvitkovicz
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/*
+ * Minimal printf and snprintf formatting functions
+ *
+ * These support %c %s %d and %x
+ * Field width and zero-padding flag only
+ */
+
+#include <stdarg.h>
+#include <string.h>
+
+static const char hexdigit[] = "0123456789ABCDEF";
+
+int vsnprintf (char *buf, int size, const char *fmt, va_list ap)
+{
+    char *bp = buf;
+    char *end = buf + size - 1;
+
+    char *str;
+    char tmpbuf[12], pad;
+    int ch, width, val, sign;
+
+    tmpbuf[sizeof tmpbuf - 1] = '\0';
+
+    while ((ch = *fmt++) != '\0' && bp < end)
+    {
+	if (ch == '%')
+	{
+	    ch = *fmt++;
+	    pad = ' ';
+	    if (ch == '0')
+		pad = '0';
+
+	    width = 0;
+	    while (ch >= '0' && ch <= '9')
+	    {
+		width = 10*width + ch - '0';
+		ch = *fmt++;
+	    }
+
+	    str = tmpbuf + sizeof tmpbuf - 1;
+	    switch (ch)
+	    {
+		case 'c':
+		    *--str = va_arg (ap, int);
+		    break;
+
+		case 's':
+		    str = va_arg (ap, char*);
+		    break;
+
+		case 'd':
+		    val = sign = va_arg (ap, int);
+		    if (val < 0)
+			val = -val;
+		    do
+		    {
+			*--str = (val % 10) + '0';
+			val /= 10;
+		    }
+		    while (val > 0);
+		    if (sign < 0)
+			*--str = '-';
+		    break;
+
+		case 'x':
+		case 'X':
+		    val = va_arg (ap, int);
+		    do
+		    {
+			*--str = hexdigit[val & 0xf];
+			val >>= 4;
+		    }
+		    while (val > 0);
+		    break;
+
+		default:
+		    *--str = ch;
+		    break;
+	    }
+
+	    if (width > 0)
+	    {
+		width -= strlen (str);
+		while (width-- > 0 && buf < end)
+		    *bp++ = pad;
+	    }
+	    while (*str != '\0' && buf < end)
+		*bp++ = *str++;
+	}
+	else
+	    *bp++ = ch;
+    }
+
+    *bp++ = '\0';
+    return bp - buf - 1;
+}
+
+int snprintf (char *buf, int size, const char *fmt, ...)
+{
+    int n;
+    va_list ap;
+
+    va_start (ap, fmt);
+    n = vsnprintf (buf, size, fmt, ap);
+    va_end (ap);
+
+    return n;
+}

firmware/debug.c

@@ -29,7 +29,7 @@ char debugbuf[200];
 
 static int debug_tx_ready(void)
 {
-   return (SSR1 & SCI_TDRE);
+    return (SSR1 & SCI_TDRE);
 }
 
 static void debug_tx_char(char ch)
@@ -180,7 +180,7 @@ void debugf(char *fmt, ...)
     va_list ap;
     
     va_start(ap, fmt);
-    vsprintf(debugmembuf, fmt, ap);
+    vsnprintf(debugmembuf, sizeof(debugmembuf), fmt, ap);
     va_end(ap);
     debug(debugmembuf);
 }
@@ -197,7 +197,7 @@ void debugf(char *fmt, ...)
     va_list ap;
     
     va_start( ap, fmt );
-    vsprintf( debugmembuf, fmt, ap );
+    vsnprintf( debugmembuf, sizeof(debugmembuf), fmt, ap );
     va_end( ap );
     printf( debugmembuf );
 }

firmware/id3.c

@@ -27,10 +27,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
-
-#ifdef SIMULATOR
 #include <fcntl.h>
-#endif
 
 struct mp3entry {
     char *path;
@@ -530,7 +527,7 @@ char *secs2str(int ms)
     static char buffer[32];
     int secs = ms/1000;
     ms %= 1000;
-    sprintf(buffer, "%d:%02d.%d", secs/60, secs%60, ms/100);
+    snprintf(buffer, sizeof(buffer), "%d:%02d.%d", secs/60, secs%60, ms/100);
     return buffer;
 }
 

firmware/panic.c

@@ -45,7 +45,7 @@ void panicf( char *fmt, ...)
     va_list ap;
     
     va_start( ap, fmt );
-    vsprintf( panic_buf, fmt, ap );
+    vsnprintf( panic_buf, sizeof(panic_buf), fmt, ap );
     va_end( ap );
 
     panic( panic_buf );

firmware/playlist.c

@@ -37,7 +37,7 @@ int reload_playlist_info( playlist_info_t *playlist )
 
     /* return a dummy playlist entry */
 
-    sprintf( playlist->filename, "\\playlists\\1.m3u" );
+    strncpy( playlist->filename, "\\playlists\\1.m3u", sizeof(playlist->filename) );
 
     playlist->indices_count = 4;
 
@@ -62,7 +62,8 @@ void load_playlist( playlist_info_t *playlist, const char *filename ) {
     char *m3u_buf = NULL;
     char debug_message[128];
     
-    sprintf( debug_message, "load_playlist( %s )\n", filename );
+    snprintf( debug_message, sizeof(debug_message),
+              "load_playlist( %s )\n", filename );
     debug( debug_message );
     
     /* read file */
@@ -71,7 +72,7 @@ void load_playlist( playlist_info_t *playlist, const char *filename ) {
 
     /* store playlist filename */
     
-    sprintf( playlist->filename, filename );
+    strncpy( playlist->filename, filename, sizeof(playlist->filename) );
     
     /* add track indices to playlist data structure */
     
@@ -159,7 +160,7 @@ void extend_indices( playlist_info_t *playlist, int new_index )
 track_t next_playlist_track( playlist_info_t *playlist ) {
 
     track_t track;
-    sprintf( track.filename, "boogie" );
+    strncpy( track.filename, "boogie", sizeof(track.filename) );
     return track;
 }
 
@@ -320,13 +321,13 @@ void get_indices_as_string( char *string, playlist_info_t *playlist )
         {
             /* first iteration - no comma */
             
-            sprintf( tmp, "%d", p[count] );
+            snprintf( tmp, sizeof(tmp), "%d", p[count] );
         }
         else
         {
             /* normal iteration - insert comma */
             
-            sprintf( tmp, ",%d", p[count] );
+            snprintf( tmp, sizeof(tmp), ",%d", p[count] );
         }
         
         strcat( string, tmp );