lib/zstd
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Add symbolic link checking to pzstd

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This commit is contained in:
Sean Purcell
2017-03-23 12:41:51 -07:00
parent dee08caabb
commit 793e7bb6dd
1 changed files with 20 additions and 2 deletions
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22
contrib/pzstd/Options.cpp
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@ -91,7 +91,7 @@ void usage() {
std::fprintf(stderr, " -# : # compression level (1-%d, default:%d)\n", kMaxNonUltraCompressionLevel, kDefaultCompressionLevel);
std::fprintf(stderr, " -d, --decompress : decompression\n");
std::fprintf(stderr, " -o file : result stored into `file` (only if 1 input file)\n");
std::fprintf(stderr, " -f, --force : overwrite output without prompting\n");
std::fprintf(stderr, " -f, --force : overwrite output without prompting, (de)compress links\n");
std::fprintf(stderr, " --rm : remove source file(s) after successful (de)compression\n");
std::fprintf(stderr, " -k, --keep : preserve source file(s) (default)\n");
std::fprintf(stderr, " -h, --help : display help and exit\n");
@ -121,6 +121,7 @@ Options::Status Options::parse(int argc, const char **argv) {
bool recursive = false;
bool ultra = false;
bool forceStdout = false;
bool followLinks = false;
// Local copy of input files, which are pointers into argv.
std::vector<const char *> localInputFiles;
for (int i = 1; i < argc; ++i) {
@ -255,6 +256,7 @@ Options::Status Options::parse(int argc, const char **argv) {
case 'f':
overwrite = true;
forceStdout = true;
followLinks = true;
break;
case 't':
test = true;
@ -328,13 +330,29 @@ Options::Status Options::parse(int argc, const char **argv) {
}
}
g_utilDisplayLevel = verbosity;
// Remove local input files that are symbolic links
if (!followLinks) {
std::remove_if(localInputFiles.begin(), localInputFiles.end(),
[&](const char *path) {
bool isLink = UTIL_isLink(path);
if (isLink && verbosity >= 2) {
std::fprintf(
stderr,
"Warning : %s is symbolic link, ignoring\n",
path);
}
return isLink;
});
}
// Translate input files/directories into files to (de)compress
if (recursive) {
char *scratchBuffer = nullptr;
unsigned numFiles = 0;
const char **files =
UTIL_createFileList(localInputFiles.data(), localInputFiles.size(),
&scratchBuffer, &numFiles);
&scratchBuffer, &numFiles, followLinks);
if (files == nullptr) {
std::fprintf(stderr, "Error traversing directories\n");
return Status::Failure;