--- a/toolsandutils/e32tools/checklib/library/library.cpp Fri Jun 25 18:24:47 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,260 +0,0 @@
-// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
-// All rights reserved.
-// This component and the accompanying materials are made available
-// under the terms of "Eclipse Public License v1.0"
-// which accompanies this distribution, and is available
-// at the URL "http://www.eclipse.org/legal/epl-v10.html".
-//
-// Initial Contributors:
-// Nokia Corporation - initial contribution.
-//
-// Contributors:
-//
-// Description:
-// Class for reading libraries in Unix "ar" format.
-//
-//
-
-#include "library.h"
-
-#include "misc/endian.h" // For misc::reverse_bytes()
-
-#include <fstream>
-#include <stdexcept>
-#include <cassert>
-#include <iostream>
-#include <iomanip>
-#include <cstdlib>
-
-namespace
-{
- // An ar library begins with this string.
- const char MAGIC[] = "!<arch>\n";
-
- // The size of an object header.
- const int HEADER_LENGTH = 60;
-
- // Each object *header* has this trailer.
- const char TRAILER[] = "`\n";
-}
-
-
-Library::Library(const char a_file_name[])
-{
- std::ifstream file(a_file_name, std::ios::in | std::ios::binary | std::ios::ate);
-
- if ( ! file.is_open() )
- {
- throw std::runtime_error("couldn't open file");
- }
-
- unsigned size = file.tellg();
- m_mem_p = new char[size];
-
- file.seekg(0, std::ios::beg);
- file.read( const_cast<char*>(m_mem_p), size );
-
- file.close();
-
- const char* p1 = m_mem_p;
- const char* p2 = p1 + size - 1;
-
- // Eat all meta objects.
-
- p1 = _eat_ar_header(p1, p2);
- p1 = _eat_sym_table(p1, p2);
- p1 = _eat_junk_objs(p1, p2);
-
- m_first_p = p1; // Pointer to the start of the first "real" object.
- m_last_p = p2; // Pointer to end of the last real object.
-}
-
-Library::~Library()
-{
- delete[] m_mem_p;
-}
-
-bool Library::contains_symbol(const char a_sym_name[]) const
-{
- std::vector<const char*>::const_iterator p = m_symbols.begin();
- std::vector<const char*>::const_iterator end_p = m_symbols.end();
-
- for ( ; p != end_p; ++p)
- {
- if ( std::strcmp(a_sym_name, *p) == 0 ) return 1;
- }
-
- return 0;
-}
-
-const std::vector< std::pair<const char*, const char*> >* Library::get_objects() const
-{
- if ( m_objects.empty() )
- {
- const char* p = m_first_p;
-
- unsigned long size;
-
- while (p < m_last_p)
- {
- p = _eat_obj_header(p, m_last_p, &size);
-
- m_objects.push_back( std::pair<const char*, const char*>(p, p + size) );
-
- p += size;
- }
- }
-
- return &m_objects;
-}
-
-const char* Library::_eat_ar_header(const char* p1, const char* p2) const
-{
- int magic_length = std::strlen(MAGIC);
-
- if (p2 - p1 + 1 < magic_length)
- {
- throw std::runtime_error("library too small for magic word");
- }
-
- if ( std::strncmp(p1, MAGIC, magic_length) != 0 )
- {
- throw std::runtime_error("bad magic; this is not a valid library");
- }
-
- return (p1 + magic_length);
-}
-
-const char* Library::_eat_sym_table(const char* a_first_p, const char* a_last_p) const
-{
- unsigned long obj_size;
-
- const char* p = _eat_obj_header(a_first_p, a_last_p, &obj_size, "/ "); // Read the header of the symbol table.
-
- if (p == a_first_p)
- {
- throw std::runtime_error("no library symbol table found");
- }
-
- const char* obj_end_p = p + obj_size;
-
- // Check that we're 4-byte aligned.
- assert( (reinterpret_cast<int>(p) & 0x3) == 0 );
-
- uint32_t nr_of_syms = *reinterpret_cast<const int*>(p);
- nr_of_syms = misc::reverse_bytes(nr_of_syms);
-
- p += sizeof(nr_of_syms); // Go past the integer we just read.
- p += nr_of_syms * sizeof(uint32_t); // Go past all the offsets.
-
- unsigned n = 0;
-
- while (n < nr_of_syms && p < a_last_p)
- {
- m_symbols.push_back(p);
-
- p += std::strlen(p) + 1;
-
- n++;
- }
-
- if (n != nr_of_syms)
- {
- throw std::runtime_error("inconsistent symbol table");
- }
-
- if (p > obj_end_p)
- {
- throw std::runtime_error("over-running symbol table");
- }
-
- return obj_end_p;
-}
-
-const char* Library::_eat_junk_objs(const char* p1, const char* p2) const
-{
- unsigned long obj_size;
- const char* p;
-
- p = _eat_obj_header(p1, p2, &obj_size, "// ");
-
- if (p > p1)
- {
- p1 = p + obj_size;
- }
-
- p = _eat_obj_header(p1, p2, &obj_size, "/ ");
-
- if (p > p1)
- {
- p1 = p + obj_size;
- }
-
- p = _eat_obj_header(p1, p2, &obj_size, "// ");
-
- if (p > p1)
- {
- p1 = p + obj_size;
- }
-
- return p1;
-}
-
-const char* Library::_eat_obj_header(const char* a_first_p, const char* a_last_p, unsigned long* a_size_p, const char* a_name) const
-{
- const char* p = a_first_p;
-
- // The header is 2-byte aligned, so ignore the previous object's trailing
- // padding byte.
- if ( reinterpret_cast<int>(p) & 1)
- {
- p++;
- }
-
- if (a_last_p - p + 1 < HEADER_LENGTH)
- {
- throw std::runtime_error("no space for library object header");
- }
-
- // At the moment We can only handle short names. This is enough for identifying
- // the meta objects "/" (symbol table) and "//" (object table).
-
- if ( a_name && std::strncmp(p, a_name, std::strlen(a_name)) != 0 )
- {
- return a_first_p;
- }
-
- p += 16; // Ignore the name field.
- p += 12; // Ignore the modification time.
- p += 6; // Ignore the group ID.
- p += 6; // Ignore the user ID.
- p += 8; // Ignore the file mode.
-
- // Read the object size.
-
- if (a_size_p)
- {
- char* tail_p;
- *a_size_p = std::strtoul(p, &tail_p, 0);
-
- if (tail_p == p || tail_p > a_last_p + 1)
- {
- throw std::runtime_error("could not read library object size");
- }
- }
-
- p += 10; // Jump over the object size field.
-
- // Verify that the header trailer is correct.
-
- int trailer_length = std::strlen(TRAILER);
-
- if ( std::strncmp(p, TRAILER, trailer_length) != 0 )
- {
- throw std::runtime_error("incorrect library object header trailer");
- }
-
- return (p + trailer_length);
-}
-
-