/* 
  Copyright (C) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
  Portions Copyright (C) 2009-2010 SN Systems Ltd. All Rights Reserved.
  Portions Copyright (C) 2009-2011 David Anderson. All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement
  or the like.  Any license provided herein, whether implied or
  otherwise, applies only to this software file.  Patent licenses, if
  any, provided herein do not apply to combinations of this program with
  other software, or any other product whatsoever.

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 51
  Franklin Street - Fifth Floor, Boston MA 02110-1301, USA.

  Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
  Mountain View, CA 94043, or:

  http://www.sgi.com

  For further information regarding this notice, see:

  http://oss.sgi.com/projects/GenInfo/NoticeExplan



$Header: /plroot/cmplrs.src/v7.4.5m/.RCS/PL/dwarfdump/RCS/tag_attr.c,v 1.8 2005/12/01 17:34:59 davea Exp $ */
#include <dwarf.h>
#include <stdio.h>
#include <stdlib.h>             /* For exit() declaration etc. */
#include <errno.h>              /* For errno declaration. */
#include <unistd.h>             /* For getopt. */

#include "globals.h"
#include "naming.h"
#include "common.h"
#include "tag_common.h"
using std::string;
using std::cerr;
using std::cout;
using std::endl;

bool ellipsis = true; /* So we can use naming.cc */

/* Expected input format 

0xffffffff
value of a tag
value of a standard attribute that follows that tag
...
0xffffffff
value of a tag
value of a standard attribute that follows that tag
...
0xffffffff
...

No blank lines or commentary allowed, no symbols, just numbers.


*/

unsigned int tag_attr_combination_table[ATTR_TABLE_ROW_MAXIMUM][ATTR_TABLE_COLUMN_MAXIMUM];


static const char *usage[] = {
  "Usage: tag_attr_build <options>\n",
  "    -i input-table-path\n",
  "    -o output-table-path\n",
  "    -s (Generate standard attribute table)\n",
  "    -e (Generate extended attribute table (common extensions))\n",
  ""
};

string input_name;
string output_name;
bool  standard_flag = false;
bool extended_flag = false;

/* process arguments */
void
process_args(int argc,char *argv[])
{
    int c = 0;
    bool usage_error = false;

    while ((c = getopt(argc, const_cast<char **>(argv), "i:o:se")) != EOF) {
        switch (c) {
        case 'i':
            input_name = optarg;
            break;
        case 'o':
            output_name = optarg;
            break;
        case 'e':
            extended_flag = true;
            break;
        case 's':
            standard_flag = true;
            break;
        default:
            usage_error = true;
            break;
        }
    }

    if (usage_error || 1 == optind || optind != argc) {
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }
}



int
main(int argc, char **argv)
{
    print_version_details(argv[0],false);
    process_args(argc,argv);
    print_args(argc,argv);

    if (input_name.empty()) {
        cerr << "Input name required, not supplied." << endl;
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }
    FILE *fileInp = fopen(input_name.c_str(),"r");
    if (!fileInp) {
        cerr << "Invalid input filename, could not open '" <<
            input_name << "'." << endl;
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }


    if (output_name.empty()) {
        cerr << "Output name required, not supplied." << endl;
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }
    FILE *fileOut = fopen(output_name.c_str(),"w");
    if (!fileOut) {
        cerr << "Invalid output filename, could not open: '" <<
            output_name <<  "'." << endl;
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }
    if ((standard_flag && extended_flag) || 
        (!standard_flag && !extended_flag)) {
        cerr << "Invalid table type" << endl;
        cerr << "Choose -e  or -s ." << endl;
        print_usage_message(argv[0],usage);
        exit(FAILED);
    }


    unsigned table_rows = 0;
    unsigned table_columns = 0;
    if(standard_flag) {
        table_rows = STD_ATTR_TABLE_ROWS;
        table_columns = STD_ATTR_TABLE_COLUMNS;
    } else {
        table_rows = EXT_ATTR_TABLE_ROWS;
        table_columns = EXT_ATTR_TABLE_COLS;
    }

    unsigned int num = 0;
    int input_eof = read_value(&num,fileInp);       /* 0xffffffff */
    if (IS_EOF == input_eof) {
        bad_line_input("Empty input file");
    }
    if (num != MAGIC_TOKEN_VALUE) {
        bad_line_input("Expected 0xffffffff");
    }
    unsigned int current_row = 0;
    while (!feof(stdin)) {
        unsigned int tag;
        unsigned int curcol = 0;

        input_eof = read_value(&tag,fileInp);
        if (IS_EOF == input_eof) {
            /* Reached normal eof */
            break;
        }
        if(standard_flag) {
            if (tag >= table_rows ) {
                bad_line_input("tag value exceeds standard table size");
            }
        } else {
            if(current_row >= table_rows) {
                bad_line_input("too many extended table rows.");
            }
            tag_attr_combination_table[current_row][0] = tag;
        }

        input_eof = read_value(&num,fileInp);
        if (IS_EOF == input_eof) {
            bad_line_input("Not terminated correctly..");
        }
        curcol = 1;
        while (num != MAGIC_TOKEN_VALUE) {
            if(standard_flag) {
                unsigned idx = num / BITS_PER_WORD;
                unsigned bit = num % BITS_PER_WORD;

                if (idx >= table_columns) {
                    bad_line_input
                        ("too many attributes: table incomplete.");
                }
                tag_attr_combination_table[tag][idx] |= (1 << bit);
            } else {
                if (curcol >= table_columns) {
                    bad_line_input("too many attributes: table incomplete.");
                } 
                tag_attr_combination_table[current_row][curcol] = num;
                curcol++;
                
            }
            input_eof = read_value(&num,fileInp);
            if (IS_EOF == input_eof) {
                bad_line_input("Not terminated correctly.");
            }
        }
        ++current_row;
    }
    fprintf(fileOut,"/* Generated code, do not edit. */\n");
    fprintf(fileOut,"/* Generated on %s  %s */\n",__DATE__,__TIME__);
    if (standard_flag) {
        fprintf(fileOut,"#define ATTR_TREE_ROW_COUNT %u\n\n",table_rows);
        fprintf(fileOut,"#define ATTR_TREE_COLUMN_COUNT %u\n\n",table_columns);
        fprintf(fileOut,
            "static unsigned int tag_attr_combination_table"
            "[ATTR_TREE_ROW_COUNT][ATTR_TREE_COLUMN_COUNT] = {\n");
    }
    else {
        fprintf(fileOut,"/* Common extensions */\n");
        fprintf(fileOut,"#define ATTR_TREE_EXT_ROW_COUNT %u\n\n",table_rows);
        fprintf(fileOut,"#define ATTR_TREE_EXT_COLUMN_COUNT %d\n\n",
            table_columns);
        fprintf(fileOut,
            "static unsigned int tag_attr_combination_ext_table"
            "[ATTR_TREE_EXT_ROW_COUNT][ATTR_TREE_EXT_COLUMN_COUNT] = {\n");
    }

    for (unsigned int i = 0; i < table_rows; i++) {
        bool printonerr = false;
        if(standard_flag) {
            fprintf(fileOut,"/* %d %-37s*/\n",i,
                get_TAG_name(i,printonerr).c_str()); 
        } else {
            fprintf(fileOut,"/* %u %-37s*/\n",
                tag_attr_combination_table[i][0], 
                get_TAG_name(
                    tag_attr_combination_table[i][0],printonerr).c_str());
        }
        fprintf(fileOut,"    { ");
        for(unsigned j = 0; j < table_columns; ++j ) {
            fprintf(fileOut,"0x%08x,",tag_attr_combination_table[i][j]);
        }
        fprintf(fileOut,"},\n");
    }
    fprintf(fileOut,"};\n");
    return (0);
}
/* A fake so we can use dwarf_names.cc */
void print_error (Dwarf_Debug dbg, const string &msg,int res, Dwarf_Error err)
{
}