Revert [619]

libtransmission/utils.c

@@ -0,0 +1,146 @@
+/******************************************************************************
+ * $Id$
+ *
+ * Copyright (c) 2005-2006 Transmission authors and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *****************************************************************************/
+
+#include "transmission.h"
+
+void tr_msg( int level, char * msg, ... )
+{
+    char         string[256];
+    va_list      args;
+    static int   verboseLevel = 0;
+
+    if( !verboseLevel )
+    {
+        char * env;
+        env          = getenv( "TR_DEBUG" );
+        verboseLevel = env ? atoi( env ) : -1;
+        verboseLevel = verboseLevel ? verboseLevel : -1;
+    }
+
+    if( verboseLevel < 1 && level > TR_MSG_ERR )
+    {
+        return;
+    }
+    if( verboseLevel < 2 && level > TR_MSG_INF )
+    {
+        return;
+    }
+
+    va_start( args, msg );
+    vsnprintf( string, sizeof( string ), msg, args );
+    va_end( args );
+    fprintf( stderr, "%s\n", string );
+}
+
+int tr_rand( int sup )
+{
+    static int init = 0;
+    if( !init )
+    {
+        srand( tr_date() );
+        init = 1;
+    }
+    return rand() % sup;
+}
+
+void * tr_memmem( const void *vbig, size_t big_len,
+                  const void *vlittle, size_t little_len )
+{
+    const char *big = vbig;
+    const char *little = vlittle;
+    size_t ii, jj;
+
+    if( 0 == big_len || 0 == little_len )
+    {
+        return NULL;
+    }
+
+    for( ii = 0; ii + little_len <= big_len; ii++ )
+    {
+        for( jj = 0; jj < little_len; jj++ )
+        {
+            if( big[ii + jj] != little[jj] )
+            {
+                break;
+            }
+        }
+        if( jj == little_len )
+        {
+            return (char*)big + ii;
+        }
+    }
+
+    return NULL;
+}
+
+int tr_mkdir( char * path )
+{
+    char      * p, * pp;
+    struct stat sb;
+    int done;
+
+    p = path;
+    while( '/' == *p )
+      p++;
+    pp = p;
+    done = 0;
+    while( ( p = strchr( pp, '/' ) ) || ( p = strchr( pp, '\0' ) ) )
+    {
+        if( '\0' == *p)
+        {
+            done = 1;
+        }
+        else
+        {
+            *p = '\0';
+        }
+        if( stat( path, &sb ) )
+        {
+            /* Folder doesn't exist yet */
+            if( mkdir( path, 0777 ) )
+            {
+                tr_err( "Could not create directory %s (%s)", path,
+                        strerror( errno ) );
+                *p = '/';
+                return 1;
+            }
+        }
+        else if( ( sb.st_mode & S_IFMT ) != S_IFDIR )
+        {
+            /* Node exists but isn't a folder */
+            tr_err( "Remove %s, it's in the way.", path );
+            *p = '/';
+            return 1;
+        }
+        if( done )
+        {
+            break;
+        }
+        *p = '/';
+        p++;
+        pp = p;
+    }
+
+    return 0;
+}