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Added switch "-a" to the FS shell's cp command. It turns on "attribute 

only" mode, in which only the attributes from the source files are
copied to the (existing) target file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21710 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2007-07-26 23:11:16 +00:00
parent 689e67941d
commit 9b5ab44de9
1 changed files with 47 additions and 4 deletions
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51
src/tools/fs_shell/command_cp.cpp
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@ -36,12 +36,14 @@ static const int sCopyBufferSize = 64 * 1024; // 64 KB
struct Options {
Options()
: dereference(true),
: attributesOnly(false),
dereference(true),
force(false),
recursive(false)
{
}
bool attributesOnly;
bool dereference;
bool force;
bool recursive;
@ -1200,6 +1202,8 @@ command_cp(int argc, const char* const* argv)
for (int i = 1; arg[i]; i++) {
switch (arg[i]) {
case 'a':
options.attributesOnly = true;
case 'd':
options.dereference = false;
break;
@ -1239,7 +1243,11 @@ command_cp(int argc, const char* const* argv)
NodeDeleter targetDeleter(targetNode);
targetExists = true;
if (targetNode->IsDirectory()) {
if (options.attributesOnly) {
// That's how it should be; we don't care whether the target is
// a directory or not. We append the attributes to that node in
// either case.
} else if (targetNode->IsDirectory()) {
targetIsDir = true;
} else {
if (sourceCount > 1) {
@ -1249,7 +1257,12 @@ command_cp(int argc, const char* const* argv)
}
}
} else {
if (sourceCount > 1) {
if (options.attributesOnly) {
fprintf(stderr, "Error: Failed to open target `%s' (it must exist "
"in attributes only mode): `%s'\n", target,
fssh_strerror(error));
return error;
} else if (sourceCount > 1) {
fprintf(stderr, "Error: Failed to open destination directory `%s':"
" `%s'\n", target, fssh_strerror(error));
return error;
@ -1264,12 +1277,42 @@ command_cp(int argc, const char* const* argv)
}
MemoryDeleter copyBufferDeleter(sCopyBuffer);
// open the target node for attributes only mode
NodeDeleter targetDeleter;
if (options.attributesOnly) {
error = targetDomain->Open(target, FSSH_O_WRONLY, targetNode);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to open target `%s' for writing: "
"`%s'\n", target, fssh_strerror(error));
return error;
}
targetDeleter.SetTo(targetNode);
}
// the copy loop
for (int i = 0; i < sourceCount; i++) {
const char *source = sources[i];
FSDomain *sourceDomain = get_file_domain(source, source);
DomainDeleter sourceDomainDeleter(sourceDomain);
if (targetExists && targetIsDir) {
if (options.attributesOnly) {
// 0. copy attributes only
// open the source node
Node *sourceNode;
error = sourceDomain->Open(source,
FSSH_O_RDONLY | (options.dereference ? 0 : FSSH_O_NOTRAVERSE),
sourceNode);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to open `%s': %s.\n", source,
fssh_strerror(error));
return error;
}
NodeDeleter sourceDeleter(sourceNode);
// copy the attributes
error = copy_attributes(source, sourceNode, target, targetNode);
} else if (targetExists && targetIsDir) {
// 1. target exists:
// 1.1. target is a dir:
// get the source leaf name