https://github.com/Kitware/CMake
Tip revision: f872033d7531ed1d7d7345ff7873442ec8dbcee1 authored by Brad King on 14 May 2019, 15:33:06 UTC
CMake 3.14.4
CMake 3.14.4
Tip revision: f872033
cmExecProgramCommand.cxx
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmExecProgramCommand.h"
#include "cmsys/Process.h"
#include <stdio.h>
#include "cmMakefile.h"
#include "cmProcessOutput.h"
#include "cmSystemTools.h"
class cmExecutionStatus;
// cmExecProgramCommand
bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
cmExecutionStatus&)
{
if (args.empty()) {
this->SetError("called with incorrect number of arguments");
return false;
}
std::string arguments;
bool doingargs = false;
int count = 0;
std::string output_variable;
bool haveoutput_variable = false;
std::string return_variable;
bool havereturn_variable = false;
for (std::string const& arg : args) {
if (arg == "OUTPUT_VARIABLE") {
count++;
doingargs = false;
havereturn_variable = false;
haveoutput_variable = true;
} else if (haveoutput_variable) {
if (!output_variable.empty()) {
this->SetError("called with incorrect number of arguments");
return false;
}
output_variable = arg;
haveoutput_variable = false;
count++;
} else if (arg == "RETURN_VALUE") {
count++;
doingargs = false;
haveoutput_variable = false;
havereturn_variable = true;
} else if (havereturn_variable) {
if (!return_variable.empty()) {
this->SetError("called with incorrect number of arguments");
return false;
}
return_variable = arg;
havereturn_variable = false;
count++;
} else if (arg == "ARGS") {
count++;
havereturn_variable = false;
haveoutput_variable = false;
doingargs = true;
} else if (doingargs) {
arguments += arg;
arguments += " ";
count++;
}
}
std::string command;
if (!arguments.empty()) {
command = cmSystemTools::ConvertToRunCommandPath(args[0].c_str());
command += " ";
command += arguments;
} else {
command = args[0];
}
bool verbose = true;
if (!output_variable.empty()) {
verbose = false;
}
int retVal = 0;
std::string output;
bool result = true;
if (args.size() - count == 2) {
cmSystemTools::MakeDirectory(args[1]);
result = cmExecProgramCommand::RunCommand(command.c_str(), output, retVal,
args[1].c_str(), verbose);
} else {
result = cmExecProgramCommand::RunCommand(command.c_str(), output, retVal,
nullptr, verbose);
}
if (!result) {
retVal = -1;
}
if (!output_variable.empty()) {
std::string::size_type first = output.find_first_not_of(" \n\t\r");
std::string::size_type last = output.find_last_not_of(" \n\t\r");
if (first == std::string::npos) {
first = 0;
}
if (last == std::string::npos) {
last = output.size() - 1;
}
std::string coutput = std::string(output, first, last - first + 1);
this->Makefile->AddDefinition(output_variable, coutput.c_str());
}
if (!return_variable.empty()) {
char buffer[100];
sprintf(buffer, "%d", retVal);
this->Makefile->AddDefinition(return_variable, buffer);
}
return true;
}
bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
int& retVal, const char* dir,
bool verbose, Encoding encoding)
{
if (cmSystemTools::GetRunCommandOutput()) {
verbose = false;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
// if the command does not start with a quote, then
// try to find the program, and if the program can not be
// found use system to run the command as it must be a built in
// shell command like echo or dir
int count = 0;
std::string shortCmd;
if (command[0] == '\"') {
// count the number of quotes
for (const char* s = command; *s != 0; ++s) {
if (*s == '\"') {
count++;
if (count > 2) {
break;
}
}
}
// if there are more than two double quotes use
// GetShortPathName, the cmd.exe program in windows which
// is used by system fails to execute if there are more than
// one set of quotes in the arguments
if (count > 2) {
cmsys::RegularExpression quoted("^\"([^\"]*)\"[ \t](.*)");
if (quoted.find(command)) {
std::string cmd = quoted.match(1);
std::string args = quoted.match(2);
if (!cmSystemTools::FileExists(cmd)) {
shortCmd = cmd;
} else if (!cmSystemTools::GetShortPath(cmd.c_str(), shortCmd)) {
cmSystemTools::Error("GetShortPath failed for ", cmd.c_str());
return false;
}
shortCmd += " ";
shortCmd += args;
command = shortCmd.c_str();
} else {
cmSystemTools::Error("Could not parse command line with quotes ",
command);
}
}
}
#endif
// Allocate a process instance.
cmsysProcess* cp = cmsysProcess_New();
if (!cp) {
cmSystemTools::Error("Error allocating process instance.");
return false;
}
#if defined(_WIN32) && !defined(__CYGWIN__)
if (dir) {
cmsysProcess_SetWorkingDirectory(cp, dir);
}
if (cmSystemTools::GetRunCommandHideConsole()) {
cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
}
cmsysProcess_SetOption(cp, cmsysProcess_Option_Verbatim, 1);
const char* cmd[] = { command, 0 };
cmsysProcess_SetCommand(cp, cmd);
#else
std::string commandInDir;
if (dir) {
commandInDir = "cd \"";
commandInDir += dir;
commandInDir += "\" && ";
commandInDir += command;
} else {
commandInDir = command;
}
# ifndef __VMS
commandInDir += " 2>&1";
# endif
command = commandInDir.c_str();
if (verbose) {
cmSystemTools::Stdout("running ");
cmSystemTools::Stdout(command);
cmSystemTools::Stdout("\n");
}
fflush(stdout);
fflush(stderr);
const char* cmd[] = { "/bin/sh", "-c", command, nullptr };
cmsysProcess_SetCommand(cp, cmd);
#endif
cmsysProcess_Execute(cp);
// Read the process output.
int length;
char* data;
int p;
cmProcessOutput processOutput(encoding);
std::string strdata;
while ((p = cmsysProcess_WaitForData(cp, &data, &length, nullptr))) {
if (p == cmsysProcess_Pipe_STDOUT || p == cmsysProcess_Pipe_STDERR) {
if (verbose) {
processOutput.DecodeText(data, length, strdata);
cmSystemTools::Stdout(strdata);
}
output.append(data, length);
}
}
if (verbose) {
processOutput.DecodeText(std::string(), strdata);
if (!strdata.empty()) {
cmSystemTools::Stdout(strdata);
}
}
// All output has been read. Wait for the process to exit.
cmsysProcess_WaitForExit(cp, nullptr);
processOutput.DecodeText(output, output);
// Check the result of running the process.
std::string msg;
switch (cmsysProcess_GetState(cp)) {
case cmsysProcess_State_Exited:
retVal = cmsysProcess_GetExitValue(cp);
break;
case cmsysProcess_State_Exception:
retVal = -1;
msg += "\nProcess terminated due to: ";
msg += cmsysProcess_GetExceptionString(cp);
break;
case cmsysProcess_State_Error:
retVal = -1;
msg += "\nProcess failed because: ";
msg += cmsysProcess_GetErrorString(cp);
break;
case cmsysProcess_State_Expired:
retVal = -1;
msg += "\nProcess terminated due to timeout.";
break;
}
if (!msg.empty()) {
#if defined(_WIN32) && !defined(__CYGWIN__)
// Old Windows process execution printed this info.
msg += "\n\nfor command: ";
msg += command;
if (dir) {
msg += "\nin dir: ";
msg += dir;
}
msg += "\n";
if (verbose) {
cmSystemTools::Stdout(msg);
}
output += msg;
#else
// Old UNIX process execution only put message in output.
output += msg;
#endif
}
// Delete the process instance.
cmsysProcess_Delete(cp);
return true;
}