CMake/Source/cmDocumentation.cxx

858 lines
26 KiB
C++

/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmDocumentation.h"
#include "cmSystemTools.h"
#include "cmVersion.h"
#include "cmRST.h"
#include <cmsys/Directory.hxx>
#include <cmsys/Glob.hxx>
#include <ctype.h>
#include <algorithm>
//----------------------------------------------------------------------------
static const char *cmDocumentationStandardOptions[][2] =
{
{"--help,-help,-usage,-h,-H,/?",
"Print usage information and exit."},
{"--version,-version,/V [<f>]",
"Print version number and exit."},
{"--help-manual <man> [<f>]",
"Print one help manual and exit."},
{"--help-manual-list [<f>]",
"List help manuals available and exit."},
{"--help-command <cmd> [<f>]",
"Print help for one command and exit."},
{"--help-command-list [<f>]",
"List commands with help available and exit."},
{"--help-commands [<f>]",
"Print cmake-commands manual and exit."},
{"--help-module <mod> [<f>]",
"Print help for one module and exit."},
{"--help-module-list [<f>]",
"List modules with help available and exit."},
{"--help-modules [<f>]",
"Print cmake-modules manual and exit."},
{"--help-policy <cmp> [<f>]",
"Print help for one policy and exit."},
{"--help-policy-list [<f>]",
"List policies with help available and exit."},
{"--help-policies [<f>]",
"Print cmake-policies manual and exit."},
{"--help-property <prop> [<f>]",
"Print help for one property and exit."},
{"--help-property-list [<f>]",
"List properties with help available and exit."},
{"--help-properties [<f>]",
"Print cmake-properties manual and exit."},
{"--help-variable var [<f>]",
"Print help for one variable and exit."},
{"--help-variable-list [<f>]",
"List variables with help available and exit."},
{"--help-variables [<f>]",
"Print cmake-variables manual and exit."},
{0,0}
};
//----------------------------------------------------------------------------
static const char *cmDocumentationGeneratorsHeader[][2] =
{
{0,
"The following generators are available on this platform:"},
{0,0}
};
//----------------------------------------------------------------------------
cmDocumentation::cmDocumentation()
{
this->addCommonStandardDocSections();
this->ShowGenerators = true;
}
//----------------------------------------------------------------------------
cmDocumentation::~cmDocumentation()
{
for(std::map<std::string,cmDocumentationSection *>::iterator i =
this->AllSections.begin();
i != this->AllSections.end(); ++i)
{
delete i->second;
}
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintVersion(std::ostream& os)
{
os << this->GetNameString() << " version "
<< cmVersion::GetCMakeVersion() << "\n";
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintDocumentation(Type ht, std::ostream& os)
{
switch (ht)
{
case cmDocumentation::Usage:
return this->PrintDocumentationUsage(os);
case cmDocumentation::OneManual:
return this->PrintHelpOneManual(os);
case cmDocumentation::OneCommand:
return this->PrintHelpOneCommand(os);
case cmDocumentation::OneModule:
return this->PrintHelpOneModule(os);
case cmDocumentation::OnePolicy:
return this->PrintHelpOnePolicy(os);
case cmDocumentation::OneProperty:
return this->PrintHelpOneProperty(os);
case cmDocumentation::OneVariable:
return this->PrintHelpOneVariable(os);
case cmDocumentation::ListManuals:
return this->PrintHelpListManuals(os);
case cmDocumentation::ListCommands:
return this->PrintHelpListCommands(os);
case cmDocumentation::ListModules:
return this->PrintHelpListModules(os);
case cmDocumentation::ListProperties:
return this->PrintHelpListProperties(os);
case cmDocumentation::ListVariables:
return this->PrintHelpListVariables(os);
case cmDocumentation::ListPolicies:
return this->PrintHelpListPolicies(os);
case cmDocumentation::Version:
return this->PrintVersion(os);
default: return false;
}
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintRequestedDocumentation(std::ostream& os)
{
int count = 0;
bool result = true;
// Loop over requested documentation types.
for(std::vector<RequestedHelpItem>::const_iterator
i = this->RequestedHelpItems.begin();
i != this->RequestedHelpItems.end();
++i)
{
this->CurrentArgument = i->Argument;
// If a file name was given, use it. Otherwise, default to the
// given stream.
std::ofstream* fout = 0;
std::ostream* s = &os;
if(i->Filename.length() > 0)
{
fout = new std::ofstream(i->Filename.c_str(), std::ios::out);
if(fout)
{
s = fout;
}
else
{
result = false;
}
}
else if(++count > 1)
{
os << "\n\n";
}
// Print this documentation type to the stream.
if(!this->PrintDocumentation(i->HelpType, *s) || !*s)
{
result = false;
}
// Close the file if we wrote one.
if(fout)
{
delete fout;
}
}
return result;
}
#define GET_OPT_ARGUMENT(target) \
if((i+1 < argc) && !this->IsOption(argv[i+1])) \
{ \
target = argv[i+1]; \
i = i+1; \
};
void cmDocumentation::WarnFormFromFilename(
cmDocumentation::RequestedHelpItem& request)
{
std::string ext = cmSystemTools::GetFilenameLastExtension(request.Filename);
ext = cmSystemTools::UpperCase(ext);
if ((ext == ".HTM") || (ext == ".HTML"))
{
request.HelpType = cmDocumentation::None;
cmSystemTools::Message("Warning: HTML help format no longer supported");
}
else if (ext == ".DOCBOOK")
{
request.HelpType = cmDocumentation::None;
cmSystemTools::Message("Warning: Docbook help format no longer supported");
}
// ".1" to ".9" should be manpages
else if ((ext.length()==2) && (ext[1] >='1') && (ext[1]<='9'))
{
request.HelpType = cmDocumentation::None;
cmSystemTools::Message("Warning: Man help format no longer supported");
}
}
//----------------------------------------------------------------------------
void cmDocumentation::addCommonStandardDocSections()
{
cmDocumentationSection *sec;
sec = new cmDocumentationSection("Options","OPTIONS");
sec->Append(cmDocumentationStandardOptions);
this->AllSections["Options"] = sec;
}
//----------------------------------------------------------------------------
void cmDocumentation::addCMakeStandardDocSections()
{
cmDocumentationSection *sec;
sec = new cmDocumentationSection("Generators","GENERATORS");
sec->Append(cmDocumentationGeneratorsHeader);
this->AllSections["Generators"] = sec;
}
//----------------------------------------------------------------------------
void cmDocumentation::addCTestStandardDocSections()
{
// This is currently done for backward compatibility reason
// We may suppress some of these.
addCMakeStandardDocSections();
}
//----------------------------------------------------------------------------
void cmDocumentation::addCPackStandardDocSections()
{
cmDocumentationSection *sec;
sec = new cmDocumentationSection("Generators","GENERATORS");
sec->Append(cmDocumentationGeneratorsHeader);
this->AllSections["Generators"] = sec;
}
//----------------------------------------------------------------------------
bool cmDocumentation::CheckOptions(int argc, const char* const* argv,
const char* exitOpt)
{
// Providing zero arguments gives usage information.
if(argc == 1)
{
RequestedHelpItem help;
help.HelpType = cmDocumentation::Usage;
this->RequestedHelpItems.push_back(help);
return true;
}
// Search for supported help options.
bool result = false;
for(int i=1; i < argc; ++i)
{
if(exitOpt && strcmp(argv[i], exitOpt) == 0)
{
return result;
}
RequestedHelpItem help;
// Check if this is a supported help option.
if((strcmp(argv[i], "-help") == 0) ||
(strcmp(argv[i], "--help") == 0) ||
(strcmp(argv[i], "/?") == 0) ||
(strcmp(argv[i], "-usage") == 0) ||
(strcmp(argv[i], "-h") == 0) ||
(strcmp(argv[i], "-H") == 0))
{
help.HelpType = cmDocumentation::Usage;
GET_OPT_ARGUMENT(help.Argument);
help.Argument = cmSystemTools::LowerCase(help.Argument);
// special case for single command
if (!help.Argument.empty())
{
help.HelpType = cmDocumentation::OneCommand;
}
}
else if(strcmp(argv[i], "--help-properties") == 0)
{
help.HelpType = cmDocumentation::OneManual;
help.Argument = "cmake-properties.7";
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-policies") == 0)
{
help.HelpType = cmDocumentation::OneManual;
help.Argument = "cmake-policies.7";
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-variables") == 0)
{
help.HelpType = cmDocumentation::OneManual;
help.Argument = "cmake-variables.7";
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-modules") == 0)
{
help.HelpType = cmDocumentation::OneManual;
help.Argument = "cmake-modules.7";
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-custom-modules") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message(
"Warning: --help-custom-modules no longer supported");
return true;
}
else if(strcmp(argv[i], "--help-commands") == 0)
{
help.HelpType = cmDocumentation::OneManual;
help.Argument = "cmake-commands.7";
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-compatcommands") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message(
"Warning: --help-compatcommands no longer supported");
return true;
}
else if(strcmp(argv[i], "--help-full") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message("Warning: --help-full no longer supported");
return true;
}
else if(strcmp(argv[i], "--help-html") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message("Warning: --help-html no longer supported");
return true;
}
else if(strcmp(argv[i], "--help-man") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message("Warning: --help-man no longer supported");
return true;
}
else if(strcmp(argv[i], "--help-command") == 0)
{
help.HelpType = cmDocumentation::OneCommand;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
help.Argument = cmSystemTools::LowerCase(help.Argument);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-module") == 0)
{
help.HelpType = cmDocumentation::OneModule;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-property") == 0)
{
help.HelpType = cmDocumentation::OneProperty;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-policy") == 0)
{
help.HelpType = cmDocumentation::OnePolicy;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-variable") == 0)
{
help.HelpType = cmDocumentation::OneVariable;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-manual") == 0)
{
help.HelpType = cmDocumentation::OneManual;
GET_OPT_ARGUMENT(help.Argument);
GET_OPT_ARGUMENT(help.Filename);
this->WarnFormFromFilename(help);
}
else if(strcmp(argv[i], "--help-command-list") == 0)
{
help.HelpType = cmDocumentation::ListCommands;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--help-module-list") == 0)
{
help.HelpType = cmDocumentation::ListModules;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--help-property-list") == 0)
{
help.HelpType = cmDocumentation::ListProperties;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--help-variable-list") == 0)
{
help.HelpType = cmDocumentation::ListVariables;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--help-policy-list") == 0)
{
help.HelpType = cmDocumentation::ListPolicies;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--help-manual-list") == 0)
{
help.HelpType = cmDocumentation::ListManuals;
GET_OPT_ARGUMENT(help.Filename);
}
else if(strcmp(argv[i], "--copyright") == 0)
{
GET_OPT_ARGUMENT(help.Filename);
cmSystemTools::Message("Warning: --copyright no longer supported");
return true;
}
else if((strcmp(argv[i], "--version") == 0) ||
(strcmp(argv[i], "-version") == 0) ||
(strcmp(argv[i], "/V") == 0))
{
help.HelpType = cmDocumentation::Version;
GET_OPT_ARGUMENT(help.Filename);
}
if(help.HelpType != None)
{
// This is a help option. See if there is a file name given.
result = true;
this->RequestedHelpItems.push_back(help);
}
}
return result;
}
//----------------------------------------------------------------------------
void cmDocumentation::SetName(const char* name)
{
this->NameString = name?name:"";
}
//----------------------------------------------------------------------------
void cmDocumentation::SetSection(const char *name,
cmDocumentationSection *section)
{
if (this->AllSections.find(name) != this->AllSections.end())
{
delete this->AllSections[name];
}
this->AllSections[name] = section;
}
//----------------------------------------------------------------------------
void cmDocumentation::SetSection(const char *name,
std::vector<cmDocumentationEntry> &docs)
{
cmDocumentationSection *sec =
new cmDocumentationSection(name,
cmSystemTools::UpperCase(name).c_str());
sec->Append(docs);
this->SetSection(name,sec);
}
//----------------------------------------------------------------------------
void cmDocumentation::SetSection(const char *name,
const char *docs[][2])
{
cmDocumentationSection *sec =
new cmDocumentationSection(name,
cmSystemTools::UpperCase(name).c_str());
sec->Append(docs);
this->SetSection(name,sec);
}
//----------------------------------------------------------------------------
void cmDocumentation
::SetSections(std::map<std::string,cmDocumentationSection *> &sections)
{
for (std::map<std::string,cmDocumentationSection *>::const_iterator
it = sections.begin(); it != sections.end(); ++it)
{
this->SetSection(it->first.c_str(),it->second);
}
}
//----------------------------------------------------------------------------
void cmDocumentation::PrependSection(const char *name,
const char *docs[][2])
{
cmDocumentationSection *sec = 0;
if (this->AllSections.find(name) == this->AllSections.end())
{
sec = new cmDocumentationSection
(name, cmSystemTools::UpperCase(name).c_str());
this->SetSection(name,sec);
}
else
{
sec = this->AllSections[name];
}
sec->Prepend(docs);
}
//----------------------------------------------------------------------------
void cmDocumentation::PrependSection(const char *name,
std::vector<cmDocumentationEntry> &docs)
{
cmDocumentationSection *sec = 0;
if (this->AllSections.find(name) == this->AllSections.end())
{
sec = new cmDocumentationSection
(name, cmSystemTools::UpperCase(name).c_str());
this->SetSection(name,sec);
}
else
{
sec = this->AllSections[name];
}
sec->Prepend(docs);
}
//----------------------------------------------------------------------------
void cmDocumentation::AppendSection(const char *name,
const char *docs[][2])
{
cmDocumentationSection *sec = 0;
if (this->AllSections.find(name) == this->AllSections.end())
{
sec = new cmDocumentationSection
(name, cmSystemTools::UpperCase(name).c_str());
this->SetSection(name,sec);
}
else
{
sec = this->AllSections[name];
}
sec->Append(docs);
}
//----------------------------------------------------------------------------
void cmDocumentation::AppendSection(const char *name,
std::vector<cmDocumentationEntry> &docs)
{
cmDocumentationSection *sec = 0;
if (this->AllSections.find(name) == this->AllSections.end())
{
sec = new cmDocumentationSection
(name, cmSystemTools::UpperCase(name).c_str());
this->SetSection(name,sec);
}
else
{
sec = this->AllSections[name];
}
sec->Append(docs);
}
//----------------------------------------------------------------------------
void cmDocumentation::AppendSection(const char *name,
cmDocumentationEntry &docs)
{
std::vector<cmDocumentationEntry> docsVec;
docsVec.push_back(docs);
this->AppendSection(name,docsVec);
}
//----------------------------------------------------------------------------
void cmDocumentation::PrependSection(const char *name,
cmDocumentationEntry &docs)
{
std::vector<cmDocumentationEntry> docsVec;
docsVec.push_back(docs);
this->PrependSection(name,docsVec);
}
//----------------------------------------------------------------------------
void cmDocumentation::GlobHelp(std::vector<std::string>& files,
std::string const& pattern)
{
cmsys::Glob gl;
std::string findExpr = this->CMakeRoot + "/Help/" + pattern + ".rst";
if(gl.FindFiles(findExpr))
{
files = gl.GetFiles();
}
}
//----------------------------------------------------------------------------
void cmDocumentation::PrintNames(std::ostream& os,
std::string const& pattern)
{
std::vector<std::string> files;
this->GlobHelp(files, pattern);
std::vector<std::string> names;
for (std::vector<std::string>::const_iterator i = files.begin();
i != files.end(); ++i)
{
std::string line;
std::ifstream fin(i->c_str());
while(fin && cmSystemTools::GetLineFromStream(fin, line))
{
if(!line.empty() && (isalnum(line[0]) || line[0] == '<'))
{
names.push_back(line);
break;
}
}
}
std::sort(names.begin(), names.end());
for (std::vector<std::string>::iterator i = names.begin();
i != names.end(); ++i)
{
os << *i << "\n";
}
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintFiles(std::ostream& os,
std::string const& pattern)
{
bool found = false;
std::vector<std::string> files;
this->GlobHelp(files, pattern);
std::sort(files.begin(), files.end());
cmRST r(os, this->CMakeRoot + "/Help");
for (std::vector<std::string>::const_iterator i = files.begin();
i != files.end(); ++i)
{
found = r.ProcessFile(i->c_str()) || found;
}
return found;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOneManual(std::ostream& os)
{
std::string mname = this->CurrentArgument;
std::string::size_type mlen = mname.length();
if(mlen > 3 && mname[mlen-3] == '(' &&
mname[mlen-1] == ')')
{
mname = mname.substr(0, mlen-3) + "." + mname[mlen-2];
}
if(this->PrintFiles(os, "manual/" + mname) ||
this->PrintFiles(os, "manual/" + mname + ".[0-9]"))
{
return true;
}
// Argument was not a manual. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-manual is not an available manual. "
<< "Use --help-manual-list to see all available manuals.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListManuals(std::ostream& os)
{
this->PrintNames(os, "manual/*");
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOneCommand(std::ostream& os)
{
std::string cname = cmSystemTools::LowerCase(this->CurrentArgument);
if(this->PrintFiles(os, "command/" + cname))
{
return true;
}
// Argument was not a command. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-command is not a CMake command. "
<< "Use --help-command-list to see all commands.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListCommands(std::ostream& os)
{
this->PrintNames(os, "command/*");
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOneModule(std::ostream& os)
{
std::string mname = this->CurrentArgument;
if(this->PrintFiles(os, "module/" + mname))
{
return true;
}
// Argument was not a module. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-module is not a CMake module.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListModules(std::ostream& os)
{
std::vector<std::string> files;
this->GlobHelp(files, "module/*");
std::vector<std::string> modules;
for (std::vector<std::string>::iterator fi = files.begin();
fi != files.end(); ++fi)
{
std::string module = cmSystemTools::GetFilenameName(*fi);
modules.push_back(module.substr(0, module.size()-4));
}
std::sort(modules.begin(), modules.end());
for (std::vector<std::string>::iterator i = modules.begin();
i != modules.end(); ++i)
{
os << *i << "\n";
}
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOneProperty(std::ostream& os)
{
std::string pname = cmSystemTools::HelpFileName(this->CurrentArgument);
if(this->PrintFiles(os, "prop_*/" + pname))
{
return true;
}
// Argument was not a property. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-property is not a CMake property. "
<< "Use --help-property-list to see all properties.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListProperties(std::ostream& os)
{
this->PrintNames(os, "prop_*/*");
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOnePolicy(std::ostream& os)
{
std::string pname = this->CurrentArgument;
std::vector<std::string> files;
if(this->PrintFiles(os, "policy/" + pname))
{
return true;
}
// Argument was not a policy. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-policy is not a CMake policy.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListPolicies(std::ostream& os)
{
this->PrintNames(os, "policy/*");
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpOneVariable(std::ostream& os)
{
std::string vname = cmSystemTools::HelpFileName(this->CurrentArgument);
if(this->PrintFiles(os, "variable/" + vname))
{
return true;
}
// Argument was not a variable. Complain.
os << "Argument \"" << this->CurrentArgument.c_str()
<< "\" to --help-variable is not a defined variable. "
<< "Use --help-variable-list to see all defined variables.\n";
return false;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintHelpListVariables(std::ostream& os)
{
this->PrintNames(os, "variable/*");
return true;
}
//----------------------------------------------------------------------------
bool cmDocumentation::PrintDocumentationUsage(std::ostream& os)
{
std::map<std::string,cmDocumentationSection*>::iterator si;
si = this->AllSections.find("Usage");
if(si != this->AllSections.end())
{
this->Formatter.PrintSection(os, *si->second);
}
si = this->AllSections.find("Options");
if(si != this->AllSections.end())
{
this->Formatter.PrintSection(os, *si->second);
}
if(this->ShowGenerators)
{
si = this->AllSections.find("Generators");
if(si != this->AllSections.end())
{
this->Formatter.PrintSection(os, *si->second);
}
}
return true;
}
//----------------------------------------------------------------------------
const char* cmDocumentation::GetNameString() const
{
if(this->NameString.length() > 0)
{
return this->NameString.c_str();
}
else
{
return "CMake";
}
}
//----------------------------------------------------------------------------
bool cmDocumentation::IsOption(const char* arg) const
{
return ((arg[0] == '-') || (strcmp(arg, "/V") == 0) ||
(strcmp(arg, "/?") == 0));
}