build.cxx

eCos1.31版

//####COPYRIGHTBEGIN####
//                                                                          
// ----------------------------------------------------------------------------
// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
//
// This program is part of the eCos host tools.
//
// This program is free software; you can redistribute it and/or modify it 
// under the terms of the GNU General Public License as published by the Free 
// Software Foundation; either version 2 of the License, or (at your option) 
// any later version.
// 
// This program is distributed in the hope that it will be useful, but WITHOUT 
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
// more details.
// 
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 
// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
// ----------------------------------------------------------------------------
//                                                                          
//####COPYRIGHTEND####
//==========================================================================
//
//      build.cxx
//
//      The implementation of build tree and makefile generation using
//      CDL data
//
//==========================================================================
//==========================================================================
//#####DESCRIPTIONBEGIN####                                             
//
// Author(s):           jld
// Date:                1999-11-08
//
//####DESCRIPTIONEND####
//==========================================================================

#ifdef _WIN32
	#include <windows.h> /* for GetShortPathNameA() */
#endif
#ifdef __CYGWIN__
	#include <sys/cygwin.h> /* for cygwin_conv_to_posix_path() */
#endif
#include "flags.hxx"
#include "build.hxx"

std::string makefile_header = "# eCos makefile\n\n# This is a generated file - do not edit\n\n";

bool eval_tcl_command (const std::string command) {
	Tcl_Interp * interp = Tcl_CreateInterp ();
#ifdef _MSC_VER
	Tcl_Channel outchan = Tcl_OpenFileChannel (interp, "nul", "a+", 777);
	Tcl_SetStdChannel (outchan, TCL_STDOUT); // direct standard output to the null device
#endif
	int nStatus = Tcl_Eval (interp, (char *) command.c_str ());
#ifdef _MSC_VER
	Tcl_SetStdChannel (NULL, TCL_STDOUT);
	Tcl_UnregisterChannel (interp, outchan);
#endif
	Tcl_DeleteInterp (interp);
	return (TCL_OK == nStatus);
}

// generate a copy of a string where each occurance of a specified char is replaced with another char
std::string replace_char (const std::string input, const char old_char, const char new_char) {
	std::string output;
	for (unsigned int n = 0; n < input.size (); n++) { // for each char
		output += (old_char == input [n]) ? new_char : input [n]; // convert during copy
	}
	return output;
}

// convert a filepath into a vector of path components
static void path_to_vector (std::string input, std::vector <std::string> & output) {
	std::string component;
	output.clear ();

	for (unsigned int n = 0; n < input.size (); n++) { // for each char in the path
		if (('/' == input [n]) || ('\\' == input [n])) { // if char is a directory separator
			output.push_back (component); // add path component to output vector
			component.erase (); // clear path component string
		} else { // char is not a separator
			component += input [n]; // add char to path component string
		}
	}
	output.push_back (component); // add final path component to output vector
}

// eliminate spaces from a DOS filepath by substituting the
// short form of path components containing spaces
#ifdef _WIN32
std::string nospace_path (const std::string input) {
	// split the path into a vector of path components
	std::vector <std::string> long_path_vector;
	path_to_vector (input, long_path_vector);

	// convert the path to its short form and split
	// the result into a vector of path components
	char buffer [MAX_PATH + 1];
	GetShortPathNameA (input.c_str (), buffer, sizeof (buffer));
	std::vector <std::string> short_path_vector;
	path_to_vector (buffer, short_path_vector);

	// append the short or long form of each path component to the output string as appropriate
	std::string output;
	for (unsigned int n = 0; n < long_path_vector.size (); n++) { // for each component of the path
		if (long_path_vector [n].end () != std::find (long_path_vector [n].begin (), long_path_vector [n].end (), ' ')) { // if there is a space in the path component
			output += short_path_vector [n]; // add the short form of the path component
		} else { // there is no space in the path component
			output += long_path_vector [n]; // add the long form of the path component
		}
		output += '\\'; // add a directory separator
	}
	output.resize (output.size () - 1); // remove the trailing separator

	return output;
}
#endif

// convert a DOS filepath to a Cygwin filepath
std::string cygpath (const std::string input) {
#ifdef _WIN32
	// remove spaces from the DOS filepath
	const std::string path = nospace_path (input);
	std::string output;

	// convert the DOS filepath to Cygwin notation - using Cygwin if available
#ifdef __CYGWIN__
	char buffer [MAX_PATH + 1];
	cygwin_conv_to_posix_path (path.c_str (), buffer);
	output = buffer;
#else
	for (unsigned int n = 0; n < path.size (); n++) { // for each char
		if ((1 == n) && (':' == path [n])) { // if a DOS logical drive letter is present
			output = "//" + output; // convert to Cygwin notation
		} else {
			output += ('\\' == path [n]) ? '/' : path [n]; // convert backslash to slash
		}
	}
#endif
	return output;
#else
	return input;
#endif
}

// create a directory
bool create_directory (const std::string directory) {
	return eval_tcl_command ("file mkdir \"" + directory + "\"");
}

// copy a file
bool copy_file (const std::string file, const std::string destination) {
	return eval_tcl_command ("file copy \"" + file + "\" \"" + destination + "\"");
	return true;
}

// returns the directory of the specified file
std::string file_to_directory (const std::string file) {
	for (unsigned int n = file.size (); n >= 0; n--) {
		if ('/' == file [n]) {
			std::string directory = file;
			directory.resize (n);
			return directory;
		}
	}
	return "";
}

std::string tab_indent (const std::string input) {
	std::string output;
	bool indent = true;
	for (unsigned int n = 0; n < input.size (); n++) {
		if (indent) {
			output += '\t';
			indent = false;
		} else {
			indent = ('\n' == input [n]);
		}
		output += input [n];
	}
	return output;
}

// return the tests of the specified loadable
std::string get_tests (const CdlConfiguration config, const CdlBuildInfo_Loadable & build_info) {
	CdlValuable tests = dynamic_cast <CdlValuable> (config->lookup (build_info.name + "_TESTS"));
	if (tests) { // if there are tests
		return tests->get_value ();
	} else { // there are no tests
		return "";
	}
}

// replaces all occurances of a substring with a new substring
std::string replace_substr (const std::string input, const std::string old_substring, const std::string new_substring) {
	std::string output = input;
	std::string::size_type index = 0;
	while (index = output.find (old_substring, index), std::string::npos != index) {
		output.replace (index, old_substring.size (), new_substring);
	}
	return output;
}

// resolve tokens in custom make rule targets and dependencies
std::string resolve_tokens (const std::string input) {
	std::string output = input;
	output = replace_substr (output, "<PREFIX>", "$(PREFIX)");
	output = replace_substr (output, "<PACKAGE>", "$(REPOSITORY)/$(PACKAGE)");
	return output;
}

// create the makefile for a loadable
bool generate_makefile (const CdlConfiguration config, const CdlBuildInfo_Loadable & info, const std::string install_tree, const std::string filename) {
	unsigned int count;
	unsigned int library;

	// obtain the command prefix
	std::string command_prefix = get_flags (config, NULL, "COMMAND_PREFIX");
	if (! command_prefix.empty ()) { // if there is a command prefix
		command_prefix += '-'; // add a trailing hyphen
	}

	// generate the prefix for archived objects
	unsigned int final_separator = 0; // the index of the last directory separator
	std::string object_prefix = info.directory; // start with the loadable directory
	for (count = 0; count < object_prefix.size (); count++) { // for each char
		if ('/' == object_prefix [count]) { // if the char is a directory separator
			object_prefix [count] = '_'; // replace the char with an underscore
			final_separator = count;
		}
	}
	object_prefix.resize (final_separator); // remove the version directory
	
	// open the makefile
	FILE * stream = fopen (filename.c_str (), "wt");
	if (stream == NULL) // if the file could not be opened
		return false;

	// generate the header