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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "publish/command.h" |
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#include <getopt.h> |
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#include <cassert> |
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#include <cstdlib> |
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#include <cstring> |
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#include "publish/except.h" |
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#include "util/logging.h" |
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#include "util/smalloc.h" |
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#include "util/string.h" |
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using namespace std; // NOLINT |
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namespace publish { |
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std::string Command::GetExamples() const { |
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std::vector<std::string> examples = DoGetExamples(); |
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std::string result; |
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for (unsigned i = 0; i < examples.size(); ++i) { |
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result += progname() + " " + GetName() + " " + examples[i] + "\n"; |
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} |
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return result; |
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} |
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Command::Options Command::ParseOptions(int argc, char **argv) { |
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Options result; |
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progname_ = argv[0]; |
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ParameterList params = GetParams(); |
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string shortopts; |
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struct option *longopts = reinterpret_cast<option *>( |
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smalloc((params.size() + 1) * sizeof(struct option))); |
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struct option lastopt; |
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memset(&lastopt, 0, sizeof(lastopt)); |
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longopts[params.size()] = lastopt; |
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for (unsigned i = 0; i < params.size(); ++i) { |
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shortopts.push_back(params[i].short_key); |
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if (!params[i].is_switch) |
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shortopts.push_back(':'); |
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longopts[i].name = strdup(params[i].key.c_str()); |
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longopts[i].has_arg = params[i].is_switch ? no_argument : required_argument; |
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longopts[i].flag = NULL; |
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longopts[i].val = params[i].short_key; |
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} |
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int idx; |
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int c; |
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opterr = 0; // Don't print error messages in getopt |
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optind = 2; // Skip the command itself |
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while ((c = getopt_long(argc, argv, shortopts.c_str(), longopts, &idx)) |
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!= -1) { |
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bool found = false; |
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for (unsigned i = 0; i < params.size(); ++i) { |
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if (c == params[i].short_key) { |
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Argument argument; |
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if (!params[i].is_switch) { |
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argument.value_str = optarg; |
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argument.value_int = String2Int64(argument.value_str); |
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} |
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result.Set(params[i], argument); |
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found = true; |
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break; |
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} |
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} |
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if (!found) { |
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assert(c == '?'); |
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// Easier to duplicate the next few lines than to add an RAII wrapper |
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for (unsigned i = 0; i < params.size(); ++i) { |
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free(const_cast<char *>(longopts[i].name)); |
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} |
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free(longopts); |
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throw EPublish( |
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GetName() + ": unrecognized parameter '" + argv[optind - 1] + "'", |
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EPublish::kFailInvocation); |
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} |
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} |
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for (unsigned i = 0; i < params.size(); ++i) { |
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free(const_cast<char *>(longopts[i].name)); |
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} |
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free(longopts); |
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for (unsigned i = 0; i < params.size(); ++i) { |
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if (!params[i].is_optional && !result.Has(params[i].key)) { |
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throw EPublish( |
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GetName() + ": missing mandatory parameter '" + params[i].key + "'", |
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EPublish::kFailInvocation); |
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} |
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} |
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for (int i = optind; i < argc; ++i) { |
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result.AppendPlain(Argument(argv[i])); |
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} |
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if (result.plain_args().size() < GetMinPlainArgs()) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "Usage: %s %s %s", progname().c_str(), |
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GetName().c_str(), GetUsage().c_str()); |
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throw EPublish(GetName() + ": missing argument", EPublish::kFailInvocation); |
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} |
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return result; |
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} |
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//------------------------------------------------------------------------------ |
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CommandList::~CommandList() { |
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for (unsigned i = 0; i < commands_.size(); ++i) |
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delete commands_[i]; |
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} |
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Command *CommandList::Find(const std::string &name) { |
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Command *result = NULL; |
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for (unsigned i = 0; i < commands_.size(); ++i) { |
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if (commands_[i]->GetName() == name) { |
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result = commands_[i]; |
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break; |
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} |
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} |
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return result; |
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} |
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void CommandList::TakeCommand(Command *command) { |
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assert(Find(command->GetName()) == NULL); |
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commands_.push_back(command); |
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} |
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} // namespace publish |
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