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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1024 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol
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// Author: Sebastian Nozzi
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// Created: 1st may 2002
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// Modifications:
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// (please include author, date, and description)
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// [email protected]: note the original one doesn't link to libbe or libstdc++
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#include <SupportDefs.h>
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#include <TypeConstants.h>
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#include <Mime.h>
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#include <Entry.h>
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#include <Node.h>
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#include <kernel/fs_attr.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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void catAttr( const char *attrName, const char *fileName );
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void dumpRawData( const char *buffer, off_t size );
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void putCharOrDot( uchar c );
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// Used to hold argv[0] along the program
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char *completeToolName;
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int main( int argc, char *argv[] )
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{
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int returnCode;
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completeToolName = argv[0];
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returnCode = 0;
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if( argc > 2 ) {
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int i;
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// Cat the attribute for every file given
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for( i = 2; i < argc; i++ )
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catAttr( argv[1], argv[i] );
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} else {
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// Issue usage message
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fprintf( stderr, "usage: %s attr_name file1 [file2...]\n", completeToolName );
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// Be's original version -only- returned 1 if the
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// amount of parameters was wrong, not if the file
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// or attribute couldn't be found (!)
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// In all other cases it returned 0
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returnCode = 1;
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}
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return returnCode;
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}
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void catAttr( const char *attrName, const char *fileName ) {
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BNode node;
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// Traverse links
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BEntry entry(fileName, true);
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node.SetTo(&entry);
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// Release file descriptor, which are limited
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entry.Unset();
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if( node.InitCheck() == B_OK ){
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// I chose to lock the node just in case
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// If you feel this is too protective remove it
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if( node.Lock() == B_OK ) {
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attr_info attrInfo;
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if( node.GetAttrInfo( attrName, &attrInfo ) == B_OK ) {
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char *rawBuffer;
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rawBuffer = (char*) malloc( attrInfo.size );
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if( rawBuffer != NULL ) {
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node.ReadAttr( attrName, attrInfo.type, 0,
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rawBuffer, attrInfo.size );
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switch( attrInfo.type ) {
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case B_INT32_TYPE:
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printf("%s : int32 : %ld\n", fileName, *((int32*)rawBuffer) );
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break;
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case B_INT64_TYPE:
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printf("%s : int64 : %lld\n", fileName, *((int64*)rawBuffer) );
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break;
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case B_FLOAT_TYPE:
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printf("%s : float : %f\n", fileName, *((float*)rawBuffer) );
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break;
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case B_DOUBLE_TYPE:
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printf("%s : double : %f\n", fileName, *((double*)rawBuffer) );
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break;
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case B_BOOL_TYPE:
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printf("%s : bool : %d\n", fileName, *((unsigned char*)rawBuffer) );
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break;
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case B_STRING_TYPE:
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case B_MIME_STRING_TYPE:
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printf("%s : string : %s\n", fileName, rawBuffer );
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break;
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default:
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#ifdef DEBUG
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// This is to see the four letters that build up the attribute type
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// in case you are ever unsure of what's going on
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// After you got it, go and compare it against the types in
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// TypeDefinitions.h
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if(1){
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char x[4];
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memcpy( (void*)&x[0], (void*) &attrInfo.type, 4 );
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printf("%c%c%c%c\n",x[3],x[2],x[1],x[0]);
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}
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#endif
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// The rest of the attributes types are displayed as raw data
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// Surprisingly for me, even types like B_UINT32_TYPE or
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// B_CHAR_TYPE... As of now I will implement this tool exactly
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// as Be's original behaved, then we can see to change this
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printf("%s : raw_data : \n", fileName );
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dumpRawData( rawBuffer, attrInfo.size );
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break;
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} /* type-switch */
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free(rawBuffer);
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} else {
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// This message I thought myself. It doesn't correspond to Be's
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// original version
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fprintf( stderr, "Not enough memory to complete this operation\n" );
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}
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} else {
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// Although misleading, this is the message provided by Be's original
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// version if the attribute could not be found
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fprintf( stderr, "%s: file %s attribute %s: "
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"No such file or directory\n", completeToolName, fileName, attrName );
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}
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node.Unlock();
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} else {
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// This message I also thought myself. It doesn't correspond to Be's
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// original version
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fprintf( stderr, "%s: unable lock file %s\n", completeToolName, fileName );
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}
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} else {
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fprintf( stderr, "%s: can\'t open file %s to cat attribute %s\n",
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completeToolName, fileName, attrName );
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}
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}
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// Dumps the contents of the attribute in the form of
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// raw data. This view is used for the type B_RAW_DATA_TYPE,
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// for custom types and for any type that is not directly
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// supported by the utility "addattr"
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void dumpRawData( const char *buffer, off_t size ) {
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off_t chunkEnd;
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off_t dumpPosition;
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off_t textPosition;
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uchar c;
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chunkEnd = 0x10;
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dumpPosition= 0;
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while( dumpPosition < size ) {
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// Position for this line
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printf( "0x%06lx: ", (unsigned long)dumpPosition );
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textPosition = dumpPosition;
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// Print the bytes in form of hexadecimal numbers
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while( dumpPosition < chunkEnd ) {
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if( dumpPosition < size ){
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c = buffer[dumpPosition];
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printf( "%02x", c );
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if( dumpPosition+1 < size )
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putchar(',');
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else
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putchar(' ');
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} else {
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printf(" ");
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}
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dumpPosition++;
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}
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// Print the bytes in form of printable characters
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// (whenever possible)
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printf(" \'");
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while( textPosition < chunkEnd ) {
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if( textPosition < size ){
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c = buffer[textPosition];
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putCharOrDot( c );
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} else {
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putchar(' ');
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}
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textPosition++;
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}
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printf("\'\n");
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chunkEnd += 0x10;
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}/* loop */
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}
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// Used to present the characters in the raw data view
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void putCharOrDot( uchar c ) {
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// By using this:
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// if( ! isgraph(c) )
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// better results were archieved, the output was leaner
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// but it's not the way it wokrs in Be's version. So I
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// decided to let the "bug" there and maybe we can
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// see what we do about it for R2
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// Put the dot for non-printable characters
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// (including and below space, which code is 32)
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if( c <= ' ' )
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putchar('.');
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else
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putchar(c);
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}
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