CMake/Source/cmStringCommand.cxx

921 lines
26 KiB
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmStringCommand.h"
#include "cmCryptoHash.h"
#include <cmsys/RegularExpression.hxx>
#include <cmsys/SystemTools.hxx>
#include <ctype.h>
#include <stdlib.h> // required for atoi
#include <time.h>
#include <cmTimestamp.h>
#include <cmUuid.h>
bool cmStringCommand::InitialPass(std::vector<std::string> const& args,
cmExecutionStatus&)
{
if (args.empty()) {
this->SetError("must be called with at least one argument.");
return false;
}
const std::string& subCommand = args[0];
if (subCommand == "REGEX") {
return this->HandleRegexCommand(args);
}
if (subCommand == "REPLACE") {
return this->HandleReplaceCommand(args);
}
if (subCommand == "MD5" || subCommand == "SHA1" || subCommand == "SHA224" ||
subCommand == "SHA256" || subCommand == "SHA384" ||
subCommand == "SHA512") {
return this->HandleHashCommand(args);
}
if (subCommand == "TOLOWER") {
return this->HandleToUpperLowerCommand(args, false);
}
if (subCommand == "TOUPPER") {
return this->HandleToUpperLowerCommand(args, true);
}
if (subCommand == "COMPARE") {
return this->HandleCompareCommand(args);
}
if (subCommand == "ASCII") {
return this->HandleAsciiCommand(args);
}
if (subCommand == "CONFIGURE") {
return this->HandleConfigureCommand(args);
}
if (subCommand == "LENGTH") {
return this->HandleLengthCommand(args);
}
if (subCommand == "APPEND") {
return this->HandleAppendCommand(args);
}
if (subCommand == "CONCAT") {
return this->HandleConcatCommand(args);
}
if (subCommand == "SUBSTRING") {
return this->HandleSubstringCommand(args);
}
if (subCommand == "STRIP") {
return this->HandleStripCommand(args);
}
if (subCommand == "RANDOM") {
return this->HandleRandomCommand(args);
}
if (subCommand == "FIND") {
return this->HandleFindCommand(args);
}
if (subCommand == "TIMESTAMP") {
return this->HandleTimestampCommand(args);
}
if (subCommand == "MAKE_C_IDENTIFIER") {
return this->HandleMakeCIdentifierCommand(args);
}
if (subCommand == "GENEX_STRIP") {
return this->HandleGenexStripCommand(args);
}
if (subCommand == "UUID") {
return this->HandleUuidCommand(args);
}
std::string e = "does not recognize sub-command " + subCommand;
this->SetError(e);
return false;
}
bool cmStringCommand::HandleHashCommand(std::vector<std::string> const& args)
{
#if defined(CMAKE_BUILD_WITH_CMAKE)
if (args.size() != 3) {
std::ostringstream e;
e << args[0] << " requires an output variable and an input string";
this->SetError(e.str());
return false;
}
CM_AUTO_PTR<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
if (hash.get()) {
std::string out = hash->HashString(args[2]);
this->Makefile->AddDefinition(args[1], out.c_str());
return true;
}
return false;
#else
std::ostringstream e;
e << args[0] << " not available during bootstrap";
this->SetError(e.str().c_str());
return false;
#endif
}
bool cmStringCommand::HandleToUpperLowerCommand(
std::vector<std::string> const& args, bool toUpper)
{
if (args.size() < 3) {
this->SetError("no output variable specified");
return false;
}
std::string outvar = args[2];
std::string output;
if (toUpper) {
output = cmSystemTools::UpperCase(args[1]);
} else {
output = cmSystemTools::LowerCase(args[1]);
}
// Store the output in the provided variable.
this->Makefile->AddDefinition(outvar, output.c_str());
return true;
}
bool cmStringCommand::HandleAsciiCommand(std::vector<std::string> const& args)
{
if (args.size() < 3) {
this->SetError("No output variable specified");
return false;
}
std::string::size_type cc;
std::string outvar = args[args.size() - 1];
std::string output = "";
for (cc = 1; cc < args.size() - 1; cc++) {
int ch = atoi(args[cc].c_str());
if (ch > 0 && ch < 256) {
output += static_cast<char>(ch);
} else {
std::string error = "Character with code ";
error += args[cc];
error += " does not exist.";
this->SetError(error);
return false;
}
}
// Store the output in the provided variable.
this->Makefile->AddDefinition(outvar, output.c_str());
return true;
}
bool cmStringCommand::HandleConfigureCommand(
std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("No input string specified.");
return false;
}
if (args.size() < 3) {
this->SetError("No output variable specified.");
return false;
}
// Parse options.
bool escapeQuotes = false;
bool atOnly = false;
for (unsigned int i = 3; i < args.size(); ++i) {
if (args[i] == "@ONLY") {
atOnly = true;
} else if (args[i] == "ESCAPE_QUOTES") {
escapeQuotes = true;
} else {
std::ostringstream err;
err << "Unrecognized argument \"" << args[i] << "\"";
this->SetError(err.str());
return false;
}
}
// Configure the string.
std::string output;
this->Makefile->ConfigureString(args[1], output, atOnly, escapeQuotes);
// Store the output in the provided variable.
this->Makefile->AddDefinition(args[2], output.c_str());
return true;
}
bool cmStringCommand::HandleRegexCommand(std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command REGEX requires a mode to be specified.");
return false;
}
std::string mode = args[1];
if (mode == "MATCH") {
if (args.size() < 5) {
this->SetError("sub-command REGEX, mode MATCH needs "
"at least 5 arguments total to command.");
return false;
}
return this->RegexMatch(args);
}
if (mode == "MATCHALL") {
if (args.size() < 5) {
this->SetError("sub-command REGEX, mode MATCHALL needs "
"at least 5 arguments total to command.");
return false;
}
return this->RegexMatchAll(args);
}
if (mode == "REPLACE") {
if (args.size() < 6) {
this->SetError("sub-command REGEX, mode REPLACE needs "
"at least 6 arguments total to command.");
return false;
}
return this->RegexReplace(args);
}
std::string e = "sub-command REGEX does not recognize mode " + mode;
this->SetError(e);
return false;
}
bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
{
//"STRING(REGEX MATCH <regular_expression> <output variable>
// <input> [<input>...])\n";
std::string regex = args[2];
std::string outvar = args[3];
this->Makefile->ClearMatches();
// Compile the regular expression.
cmsys::RegularExpression re;
if (!re.compile(regex.c_str())) {
std::string e =
"sub-command REGEX, mode MATCH failed to compile regex \"" + regex +
"\".";
this->SetError(e);
return false;
}
// Concatenate all the last arguments together.
std::string input = cmJoin(cmMakeRange(args).advance(4), std::string());
// Scan through the input for all matches.
std::string output;
if (re.find(input.c_str())) {
this->Makefile->StoreMatches(re);
std::string::size_type l = re.start();
std::string::size_type r = re.end();
if (r - l == 0) {
std::string e = "sub-command REGEX, mode MATCH regex \"" + regex +
"\" matched an empty string.";
this->SetError(e);
return false;
}
output = input.substr(l, r - l);
}
// Store the output in the provided variable.
this->Makefile->AddDefinition(outvar, output.c_str());
return true;
}
bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
{
//"STRING(REGEX MATCHALL <regular_expression> <output variable> <input>
// [<input>...])\n";
std::string regex = args[2];
std::string outvar = args[3];
this->Makefile->ClearMatches();
// Compile the regular expression.
cmsys::RegularExpression re;
if (!re.compile(regex.c_str())) {
std::string e =
"sub-command REGEX, mode MATCHALL failed to compile regex \"" + regex +
"\".";
this->SetError(e);
return false;
}
// Concatenate all the last arguments together.
std::string input = cmJoin(cmMakeRange(args).advance(4), std::string());
// Scan through the input for all matches.
std::string output;
const char* p = input.c_str();
while (re.find(p)) {
this->Makefile->StoreMatches(re);
std::string::size_type l = re.start();
std::string::size_type r = re.end();
if (r - l == 0) {
std::string e = "sub-command REGEX, mode MATCHALL regex \"" + regex +
"\" matched an empty string.";
this->SetError(e);
return false;
}
if (!output.empty()) {
output += ";";
}
output += std::string(p + l, r - l);
p += r;
}
// Store the output in the provided variable.
this->Makefile->AddDefinition(outvar, output.c_str());
return true;
}
bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
{
//"STRING(REGEX REPLACE <regular_expression> <replace_expression>
// <output variable> <input> [<input>...])\n"
std::string regex = args[2];
std::string replace = args[3];
std::string outvar = args[4];
// Pull apart the replace expression to find the escaped [0-9] values.
std::vector<RegexReplacement> replacement;
std::string::size_type l = 0;
while (l < replace.length()) {
std::string::size_type r = replace.find("\\", l);
if (r == std::string::npos) {
r = replace.length();
replacement.push_back(replace.substr(l, r - l));
} else {
if (r - l > 0) {
replacement.push_back(replace.substr(l, r - l));
}
if (r == (replace.length() - 1)) {
this->SetError("sub-command REGEX, mode REPLACE: "
"replace-expression ends in a backslash.");
return false;
}
if ((replace[r + 1] >= '0') && (replace[r + 1] <= '9')) {
replacement.push_back(replace[r + 1] - '0');
} else if (replace[r + 1] == 'n') {
replacement.push_back("\n");
} else if (replace[r + 1] == '\\') {
replacement.push_back("\\");
} else {
std::string e = "sub-command REGEX, mode REPLACE: Unknown escape \"";
e += replace.substr(r, 2);
e += "\" in replace-expression.";
this->SetError(e);
return false;
}
r += 2;
}
l = r;
}
this->Makefile->ClearMatches();
// Compile the regular expression.
cmsys::RegularExpression re;
if (!re.compile(regex.c_str())) {
std::string e =
"sub-command REGEX, mode REPLACE failed to compile regex \"" + regex +
"\".";
this->SetError(e);
return false;
}
// Concatenate all the last arguments together.
std::string input = cmJoin(cmMakeRange(args).advance(5), std::string());
// Scan through the input for all matches.
std::string output;
std::string::size_type base = 0;
while (re.find(input.c_str() + base)) {
this->Makefile->StoreMatches(re);
std::string::size_type l2 = re.start();
std::string::size_type r = re.end();
// Concatenate the part of the input that was not matched.
output += input.substr(base, l2);
// Make sure the match had some text.
if (r - l2 == 0) {
std::string e = "sub-command REGEX, mode REPLACE regex \"" + regex +
"\" matched an empty string.";
this->SetError(e);
return false;
}
// Concatenate the replacement for the match.
for (unsigned int i = 0; i < replacement.size(); ++i) {
if (replacement[i].number < 0) {
// This is just a plain-text part of the replacement.
output += replacement[i].value;
} else {
// Replace with part of the match.
int n = replacement[i].number;
std::string::size_type start = re.start(n);
std::string::size_type end = re.end(n);
std::string::size_type len = input.length() - base;
if ((start != std::string::npos) && (end != std::string::npos) &&
(start <= len) && (end <= len)) {
output += input.substr(base + start, end - start);
} else {
std::string e =
"sub-command REGEX, mode REPLACE: replace expression \"" +
replace + "\" contains an out-of-range escape for regex \"" +
regex + "\".";
this->SetError(e);
return false;
}
}
}
// Move past the match.
base += r;
}
// Concatenate the text after the last match.
output += input.substr(base, input.length() - base);
// Store the output in the provided variable.
this->Makefile->AddDefinition(outvar, output.c_str());
return true;
}
bool cmStringCommand::HandleFindCommand(std::vector<std::string> const& args)
{
// check if all required parameters were passed
if (args.size() < 4 || args.size() > 5) {
this->SetError("sub-command FIND requires 3 or 4 parameters.");
return false;
}
// check if the reverse flag was set or not
bool reverseMode = false;
if (args.size() == 5 && args[4] == "REVERSE") {
reverseMode = true;
}
// if we have 5 arguments the last one must be REVERSE
if (args.size() == 5 && args[4] != "REVERSE") {
this->SetError("sub-command FIND: unknown last parameter");
return false;
}
// local parameter names.
const std::string& sstring = args[1];
const std::string& schar = args[2];
const std::string& outvar = args[3];
// ensure that the user cannot accidentally specify REVERSE as a variable
if (outvar == "REVERSE") {
this->SetError("sub-command FIND does not allow one to select REVERSE as "
"the output variable. "
"Maybe you missed the actual output variable?");
return false;
}
// try to find the character and return its position
size_t pos;
if (!reverseMode) {
pos = sstring.find(schar);
} else {
pos = sstring.rfind(schar);
}
if (std::string::npos != pos) {
std::ostringstream s;
s << pos;
this->Makefile->AddDefinition(outvar, s.str().c_str());
return true;
}
// the character was not found, but this is not really an error
this->Makefile->AddDefinition(outvar, "-1");
return true;
}
bool cmStringCommand::HandleCompareCommand(
std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command COMPARE requires a mode to be specified.");
return false;
}
std::string mode = args[1];
if ((mode == "EQUAL") || (mode == "NOTEQUAL") || (mode == "LESS") ||
(mode == "LESS_EQUAL") || (mode == "GREATER") ||
(mode == "GREATER_EQUAL")) {
if (args.size() < 5) {
std::string e = "sub-command COMPARE, mode ";
e += mode;
e += " needs at least 5 arguments total to command.";
this->SetError(e);
return false;
}
const std::string& left = args[2];
const std::string& right = args[3];
const std::string& outvar = args[4];
bool result;
if (mode == "LESS") {
result = (left < right);
} else if (mode == "LESS_EQUAL") {
result = (left <= right);
} else if (mode == "GREATER") {
result = (left > right);
} else if (mode == "GREATER_EQUAL") {
result = (left >= right);
} else if (mode == "EQUAL") {
result = (left == right);
} else // if(mode == "NOTEQUAL")
{
result = !(left == right);
}
if (result) {
this->Makefile->AddDefinition(outvar, "1");
} else {
this->Makefile->AddDefinition(outvar, "0");
}
return true;
}
std::string e = "sub-command COMPARE does not recognize mode " + mode;
this->SetError(e);
return false;
}
bool cmStringCommand::HandleReplaceCommand(
std::vector<std::string> const& args)
{
if (args.size() < 5) {
this->SetError("sub-command REPLACE requires at least four arguments.");
return false;
}
const std::string& matchExpression = args[1];
const std::string& replaceExpression = args[2];
const std::string& variableName = args[3];
std::string input = cmJoin(cmMakeRange(args).advance(4), std::string());
cmsys::SystemTools::ReplaceString(input, matchExpression.c_str(),
replaceExpression.c_str());
this->Makefile->AddDefinition(variableName, input.c_str());
return true;
}
bool cmStringCommand::HandleSubstringCommand(
std::vector<std::string> const& args)
{
if (args.size() != 5) {
this->SetError("sub-command SUBSTRING requires four arguments.");
return false;
}
const std::string& stringValue = args[1];
int begin = atoi(args[2].c_str());
int end = atoi(args[3].c_str());
const std::string& variableName = args[4];
size_t stringLength = stringValue.size();
int intStringLength = static_cast<int>(stringLength);
if (begin < 0 || begin > intStringLength) {
std::ostringstream ostr;
ostr << "begin index: " << begin << " is out of range 0 - "
<< stringLength;
this->SetError(ostr.str());
return false;
}
if (end < -1) {
std::ostringstream ostr;
ostr << "end index: " << end << " should be -1 or greater";
this->SetError(ostr.str());
return false;
}
this->Makefile->AddDefinition(variableName,
stringValue.substr(begin, end).c_str());
return true;
}
bool cmStringCommand::HandleLengthCommand(std::vector<std::string> const& args)
{
if (args.size() != 3) {
this->SetError("sub-command LENGTH requires two arguments.");
return false;
}
const std::string& stringValue = args[1];
const std::string& variableName = args[2];
size_t length = stringValue.size();
char buffer[1024];
sprintf(buffer, "%d", static_cast<int>(length));
this->Makefile->AddDefinition(variableName, buffer);
return true;
}
bool cmStringCommand::HandleAppendCommand(std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command APPEND requires at least one argument.");
return false;
}
// Skip if nothing to append.
if (args.size() < 3) {
return true;
}
const std::string& variable = args[1];
std::string value;
const char* oldValue = this->Makefile->GetDefinition(variable);
if (oldValue) {
value = oldValue;
}
value += cmJoin(cmMakeRange(args).advance(2), std::string());
this->Makefile->AddDefinition(variable, value.c_str());
return true;
}
bool cmStringCommand::HandleConcatCommand(std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command CONCAT requires at least one argument.");
return false;
}
std::string const& variableName = args[1];
std::string value = cmJoin(cmMakeRange(args).advance(2), std::string());
this->Makefile->AddDefinition(variableName, value.c_str());
return true;
}
bool cmStringCommand::HandleMakeCIdentifierCommand(
std::vector<std::string> const& args)
{
if (args.size() != 3) {
this->SetError("sub-command MAKE_C_IDENTIFIER requires two arguments.");
return false;
}
const std::string& input = args[1];
const std::string& variableName = args[2];
this->Makefile->AddDefinition(variableName,
cmSystemTools::MakeCidentifier(input).c_str());
return true;
}
bool cmStringCommand::HandleGenexStripCommand(
std::vector<std::string> const& args)
{
if (args.size() != 3) {
this->SetError("sub-command GENEX_STRIP requires two arguments.");
return false;
}
const std::string& input = args[1];
std::string result = cmGeneratorExpression::Preprocess(
input, cmGeneratorExpression::StripAllGeneratorExpressions);
const std::string& variableName = args[2];
this->Makefile->AddDefinition(variableName, result.c_str());
return true;
}
bool cmStringCommand::HandleStripCommand(std::vector<std::string> const& args)
{
if (args.size() != 3) {
this->SetError("sub-command STRIP requires two arguments.");
return false;
}
const std::string& stringValue = args[1];
const std::string& variableName = args[2];
size_t inStringLength = stringValue.size();
size_t startPos = inStringLength + 1;
size_t endPos = 0;
const char* ptr = stringValue.c_str();
size_t cc;
for (cc = 0; cc < inStringLength; ++cc) {
if (!isspace(*ptr)) {
if (startPos > inStringLength) {
startPos = cc;
}
endPos = cc;
}
++ptr;
}
size_t outLength = 0;
// if the input string didn't contain any non-space characters, return
// an empty string
if (startPos > inStringLength) {
outLength = 0;
startPos = 0;
} else {
outLength = endPos - startPos + 1;
}
this->Makefile->AddDefinition(
variableName, stringValue.substr(startPos, outLength).c_str());
return true;
}
bool cmStringCommand::HandleRandomCommand(std::vector<std::string> const& args)
{
if (args.size() < 2 || args.size() == 3 || args.size() == 5) {
this->SetError("sub-command RANDOM requires at least one argument.");
return false;
}
static bool seeded = false;
bool force_seed = false;
unsigned int seed = 0;
int length = 5;
const char cmStringCommandDefaultAlphabet[] = "qwertyuiopasdfghjklzxcvbnm"
"QWERTYUIOPASDFGHJKLZXCVBNM"
"0123456789";
std::string alphabet;
if (args.size() > 3) {
size_t i = 1;
size_t stopAt = args.size() - 2;
for (; i < stopAt; ++i) {
if (args[i] == "LENGTH") {
++i;
length = atoi(args[i].c_str());
} else if (args[i] == "ALPHABET") {
++i;
alphabet = args[i];
} else if (args[i] == "RANDOM_SEED") {
++i;
seed = static_cast<unsigned int>(atoi(args[i].c_str()));
force_seed = true;
}
}
}
if (alphabet.empty()) {
alphabet = cmStringCommandDefaultAlphabet;
}
double sizeofAlphabet = static_cast<double>(alphabet.size());
if (sizeofAlphabet < 1) {
this->SetError("sub-command RANDOM invoked with bad alphabet.");
return false;
}
if (length < 1) {
this->SetError("sub-command RANDOM invoked with bad length.");
return false;
}
const std::string& variableName = args[args.size() - 1];
std::vector<char> result;
if (!seeded || force_seed) {
seeded = true;
srand(force_seed ? seed : cmSystemTools::RandomSeed());
}
const char* alphaPtr = alphabet.c_str();
int cc;
for (cc = 0; cc < length; cc++) {
int idx = (int)(sizeofAlphabet * rand() / (RAND_MAX + 1.0));
result.push_back(*(alphaPtr + idx));
}
result.push_back(0);
this->Makefile->AddDefinition(variableName, &*result.begin());
return true;
}
bool cmStringCommand::HandleTimestampCommand(
std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command TIMESTAMP requires at least one argument.");
return false;
}
if (args.size() > 4) {
this->SetError("sub-command TIMESTAMP takes at most three arguments.");
return false;
}
unsigned int argsIndex = 1;
const std::string& outputVariable = args[argsIndex++];
std::string formatString;
if (args.size() > argsIndex && args[argsIndex] != "UTC") {
formatString = args[argsIndex++];
}
bool utcFlag = false;
if (args.size() > argsIndex) {
if (args[argsIndex] == "UTC") {
utcFlag = true;
} else {
std::string e = " TIMESTAMP sub-command does not recognize option " +
args[argsIndex] + ".";
this->SetError(e);
return false;
}
}
cmTimestamp timestamp;
std::string result = timestamp.CurrentTime(formatString, utcFlag);
this->Makefile->AddDefinition(outputVariable, result.c_str());
return true;
}
bool cmStringCommand::HandleUuidCommand(std::vector<std::string> const& args)
{
#if defined(CMAKE_BUILD_WITH_CMAKE)
unsigned int argsIndex = 1;
if (args.size() < 2) {
this->SetError("UUID sub-command requires an output variable.");
return false;
}
const std::string& outputVariable = args[argsIndex++];
std::string uuidNamespaceString;
std::string uuidName;
std::string uuidType;
bool uuidUpperCase = false;
while (args.size() > argsIndex) {
if (args[argsIndex] == "NAMESPACE") {
++argsIndex;
if (argsIndex >= args.size()) {
this->SetError("UUID sub-command, NAMESPACE requires a value.");
return false;
}
uuidNamespaceString = args[argsIndex++];
} else if (args[argsIndex] == "NAME") {
++argsIndex;
if (argsIndex >= args.size()) {
this->SetError("UUID sub-command, NAME requires a value.");
return false;
}
uuidName = args[argsIndex++];
} else if (args[argsIndex] == "TYPE") {
++argsIndex;
if (argsIndex >= args.size()) {
this->SetError("UUID sub-command, TYPE requires a value.");
return false;
}
uuidType = args[argsIndex++];
} else if (args[argsIndex] == "UPPER") {
++argsIndex;
uuidUpperCase = true;
} else {
std::string e =
"UUID sub-command does not recognize option " + args[argsIndex] + ".";
this->SetError(e);
return false;
}
}
std::string uuid;
cmUuid uuidGenerator;
std::vector<unsigned char> uuidNamespace;
if (!uuidGenerator.StringToBinary(uuidNamespaceString, uuidNamespace)) {
this->SetError("UUID sub-command, malformed NAMESPACE UUID.");
return false;
}
if (uuidType == "MD5") {
uuid = uuidGenerator.FromMd5(uuidNamespace, uuidName);
} else if (uuidType == "SHA1") {
uuid = uuidGenerator.FromSha1(uuidNamespace, uuidName);
} else {
std::string e = "UUID sub-command, unknown TYPE '" + uuidType + "'.";
this->SetError(e);
return false;
}
if (uuid.empty()) {
this->SetError("UUID sub-command, generation failed.");
return false;
}
if (uuidUpperCase) {
uuid = cmSystemTools::UpperCase(uuid);
}
this->Makefile->AddDefinition(outputVariable, uuid.c_str());
return true;
#else
std::ostringstream e;
e << args[0] << " not available during bootstrap";
this->SetError(e.str().c_str());
return false;
#endif
}