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328 lines
10 KiB
328 lines
10 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmExecuteProcessCommand.h"
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#include "cmSystemTools.h"
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#include <cmsys/Process.h>
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#include <ctype.h> /* isspace */
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static bool cmExecuteProcessCommandIsWhitespace(char c)
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{
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return (isspace((int)c) || c == '\n' || c == '\r');
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}
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void cmExecuteProcessCommandFixText(std::vector<char>& output,
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bool strip_trailing_whitespace);
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void cmExecuteProcessCommandAppend(std::vector<char>& output, const char* data,
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int length);
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// cmExecuteProcessCommand
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bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus&)
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{
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if (args.empty()) {
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this->SetError("called with incorrect number of arguments");
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return false;
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}
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std::vector<std::vector<const char*> > cmds;
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std::string arguments;
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bool doing_command = false;
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size_t command_index = 0;
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bool output_quiet = false;
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bool error_quiet = false;
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bool output_strip_trailing_whitespace = false;
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bool error_strip_trailing_whitespace = false;
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std::string timeout_string;
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std::string input_file;
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std::string output_file;
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std::string error_file;
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std::string output_variable;
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std::string error_variable;
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std::string result_variable;
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std::string working_directory;
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for (size_t i = 0; i < args.size(); ++i) {
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if (args[i] == "COMMAND") {
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doing_command = true;
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command_index = cmds.size();
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cmds.push_back(std::vector<const char*>());
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} else if (args[i] == "OUTPUT_VARIABLE") {
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doing_command = false;
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if (++i < args.size()) {
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output_variable = args[i];
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} else {
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this->SetError(" called with no value for OUTPUT_VARIABLE.");
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return false;
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}
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} else if (args[i] == "ERROR_VARIABLE") {
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doing_command = false;
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if (++i < args.size()) {
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error_variable = args[i];
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} else {
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this->SetError(" called with no value for ERROR_VARIABLE.");
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return false;
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}
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} else if (args[i] == "RESULT_VARIABLE") {
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doing_command = false;
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if (++i < args.size()) {
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result_variable = args[i];
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} else {
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this->SetError(" called with no value for RESULT_VARIABLE.");
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return false;
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}
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} else if (args[i] == "WORKING_DIRECTORY") {
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doing_command = false;
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if (++i < args.size()) {
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working_directory = args[i];
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} else {
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this->SetError(" called with no value for WORKING_DIRECTORY.");
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return false;
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}
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} else if (args[i] == "INPUT_FILE") {
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doing_command = false;
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if (++i < args.size()) {
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input_file = args[i];
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} else {
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this->SetError(" called with no value for INPUT_FILE.");
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return false;
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}
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} else if (args[i] == "OUTPUT_FILE") {
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doing_command = false;
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if (++i < args.size()) {
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output_file = args[i];
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} else {
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this->SetError(" called with no value for OUTPUT_FILE.");
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return false;
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}
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} else if (args[i] == "ERROR_FILE") {
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doing_command = false;
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if (++i < args.size()) {
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error_file = args[i];
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} else {
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this->SetError(" called with no value for ERROR_FILE.");
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return false;
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}
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} else if (args[i] == "TIMEOUT") {
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doing_command = false;
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if (++i < args.size()) {
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timeout_string = args[i];
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} else {
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this->SetError(" called with no value for TIMEOUT.");
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return false;
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}
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} else if (args[i] == "OUTPUT_QUIET") {
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doing_command = false;
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output_quiet = true;
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} else if (args[i] == "ERROR_QUIET") {
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doing_command = false;
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error_quiet = true;
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} else if (args[i] == "OUTPUT_STRIP_TRAILING_WHITESPACE") {
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doing_command = false;
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output_strip_trailing_whitespace = true;
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} else if (args[i] == "ERROR_STRIP_TRAILING_WHITESPACE") {
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doing_command = false;
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error_strip_trailing_whitespace = true;
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} else if (doing_command) {
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cmds[command_index].push_back(args[i].c_str());
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} else {
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std::ostringstream e;
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e << " given unknown argument \"" << args[i] << "\".";
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this->SetError(e.str());
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return false;
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}
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}
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if (!this->Makefile->CanIWriteThisFile(output_file.c_str())) {
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std::string e = "attempted to output into a file: " + output_file +
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" into a source directory.";
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this->SetError(e);
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cmSystemTools::SetFatalErrorOccured();
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return false;
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}
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// Check for commands given.
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if (cmds.empty()) {
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this->SetError(" called with no COMMAND argument.");
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return false;
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}
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for (unsigned int i = 0; i < cmds.size(); ++i) {
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if (cmds[i].empty()) {
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this->SetError(" given COMMAND argument with no value.");
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return false;
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}
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// Add the null terminating pointer to the command argument list.
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cmds[i].push_back(CM_NULLPTR);
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}
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// Parse the timeout string.
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double timeout = -1;
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if (!timeout_string.empty()) {
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if (sscanf(timeout_string.c_str(), "%lg", &timeout) != 1) {
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this->SetError(" called with TIMEOUT value that could not be parsed.");
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return false;
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}
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}
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// Create a process instance.
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cmsysProcess* cp = cmsysProcess_New();
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// Set the command sequence.
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for (unsigned int i = 0; i < cmds.size(); ++i) {
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cmsysProcess_AddCommand(cp, &*cmds[i].begin());
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}
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// Set the process working directory.
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if (!working_directory.empty()) {
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cmsysProcess_SetWorkingDirectory(cp, working_directory.c_str());
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}
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// Always hide the process window.
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cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
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// Check the output variables.
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bool merge_output = false;
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if (!input_file.empty()) {
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cmsysProcess_SetPipeFile(cp, cmsysProcess_Pipe_STDIN, input_file.c_str());
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}
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if (!output_file.empty()) {
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cmsysProcess_SetPipeFile(cp, cmsysProcess_Pipe_STDOUT,
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output_file.c_str());
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}
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if (!error_file.empty()) {
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if (error_file == output_file) {
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merge_output = true;
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} else {
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cmsysProcess_SetPipeFile(cp, cmsysProcess_Pipe_STDERR,
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error_file.c_str());
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}
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}
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if (!output_variable.empty() && output_variable == error_variable) {
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merge_output = true;
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}
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if (merge_output) {
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cmsysProcess_SetOption(cp, cmsysProcess_Option_MergeOutput, 1);
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}
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// Set the timeout if any.
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if (timeout >= 0) {
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cmsysProcess_SetTimeout(cp, timeout);
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}
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// Start the process.
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cmsysProcess_Execute(cp);
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// Read the process output.
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std::vector<char> tempOutput;
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std::vector<char> tempError;
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int length;
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char* data;
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int p;
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while ((p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
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// Put the output in the right place.
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if (p == cmsysProcess_Pipe_STDOUT && !output_quiet) {
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if (output_variable.empty()) {
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cmSystemTools::Stdout(data, length);
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} else {
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cmExecuteProcessCommandAppend(tempOutput, data, length);
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}
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} else if (p == cmsysProcess_Pipe_STDERR && !error_quiet) {
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if (error_variable.empty()) {
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cmSystemTools::Stderr(data, length);
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} else {
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cmExecuteProcessCommandAppend(tempError, data, length);
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}
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}
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}
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// All output has been read. Wait for the process to exit.
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cmsysProcess_WaitForExit(cp, CM_NULLPTR);
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// Fix the text in the output strings.
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cmExecuteProcessCommandFixText(tempOutput, output_strip_trailing_whitespace);
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cmExecuteProcessCommandFixText(tempError, error_strip_trailing_whitespace);
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// Store the output obtained.
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if (!output_variable.empty() && !tempOutput.empty()) {
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this->Makefile->AddDefinition(output_variable, &*tempOutput.begin());
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}
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if (!merge_output && !error_variable.empty() && !tempError.empty()) {
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this->Makefile->AddDefinition(error_variable, &*tempError.begin());
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}
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// Store the result of running the process.
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if (!result_variable.empty()) {
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switch (cmsysProcess_GetState(cp)) {
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case cmsysProcess_State_Exited: {
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int v = cmsysProcess_GetExitValue(cp);
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char buf[100];
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sprintf(buf, "%d", v);
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this->Makefile->AddDefinition(result_variable, buf);
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} break;
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case cmsysProcess_State_Exception:
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this->Makefile->AddDefinition(result_variable,
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cmsysProcess_GetExceptionString(cp));
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break;
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case cmsysProcess_State_Error:
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this->Makefile->AddDefinition(result_variable,
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cmsysProcess_GetErrorString(cp));
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break;
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case cmsysProcess_State_Expired:
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this->Makefile->AddDefinition(result_variable,
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"Process terminated due to timeout");
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break;
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}
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}
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// Delete the process instance.
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cmsysProcess_Delete(cp);
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return true;
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}
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void cmExecuteProcessCommandFixText(std::vector<char>& output,
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bool strip_trailing_whitespace)
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{
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// Remove \0 characters and the \r part of \r\n pairs.
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unsigned int in_index = 0;
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unsigned int out_index = 0;
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while (in_index < output.size()) {
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char c = output[in_index++];
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if ((c != '\r' ||
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!(in_index < output.size() && output[in_index] == '\n')) &&
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c != '\0') {
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output[out_index++] = c;
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}
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}
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// Remove trailing whitespace if requested.
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if (strip_trailing_whitespace) {
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while (out_index > 0 &&
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cmExecuteProcessCommandIsWhitespace(output[out_index - 1])) {
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--out_index;
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}
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}
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// Shrink the vector to the size needed.
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output.resize(out_index);
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// Put a terminator on the text string.
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output.push_back('\0');
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}
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void cmExecuteProcessCommandAppend(std::vector<char>& output, const char* data,
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int length)
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{
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#if defined(__APPLE__)
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// HACK on Apple to work around bug with inserting at the
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// end of an empty vector. This resulted in random failures
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// that were hard to reproduce.
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if (output.empty() && length > 0) {
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output.push_back(data[0]);
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++data;
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--length;
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}
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#endif
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output.insert(output.end(), data, data + length);
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}
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