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/*************************************************************************

 *          Copyright (C) 1995 Embedded Solutions

 *                      All rights reserved

 *

 * file:        src\print.c

 *

 * purpose: Module to interface to the printer channel (file)

 *

 * functions

 *      open_printer            - Open the printer

 *      close_printer           - Close the printer

 *      print                   - Print to to the printer

 *      printbanner             - Print a page banner

 *

 * programmer: David Purdie

 *

 * revision date        by      reason

 *  00.0    27/01/95    DDP     Tidies up the program and formatted the file

 *

 **************************************************************************/

#include <QString>

#include  <QDir>

#include    <stdio.h>

#include    <time.h>

#include    <stdarg.h>

#include    "mainwindow.h"

#include    "consts.h"

#include    "structs.h"

#include    "proto.h"

FILE       *pfile;                               /* Fd of the printer channel */

long        pri_time;                            /* Time printer is opened - for banners */

int         print_width;                         /* Width of the printout */

report_type print_html = text;                   /* Printing with HTML */

int         print_col = 0;                       /* Current print column */

int         print_line = 0;                      /* Current print line */

int         print_underline_start;               /* Start of underline */

int         print_underline_end;                 /* End of underline */

long        print_current_colour;                /* Current printing colour */

QString     printFileName;                       /* Last printer file opened */

/*========================================================================

 *

 *  Open the printer

 *

 *  Purpose:

 *      This function is called to open the printer and prepare to print

 *

 *  Parameters:

 *      name        Name of print file

 *      ext         Ext of the print file

 *      width       Width of the printed file

 *      html        Printing in HTML mode

 *

 *  Returns:

 *      TRUE if the printer can be attached

 *

 *

 *  Note: Use an "htm" file extension as DOS cannot handle 4 letter extensions

 *========================================================================*/

bool open_printer( const char *name, const char *ext, int width, report_type html, const char *title )

{

    char    *pname;

    /*

    **  Determine the name of the file

    **  May need to modify the extension if it is an HTML file

    */

    if ( html )

    {

        if ( html == printed )

            pname = p_filename( name[0] ? name : filebase, ext ,"prn.html" );

        else

            pname = p_filename( name[0] ? name : filebase, ext ,"html" );

    }

    else

    {

        pname = p_filename( filebase, name[0] ? name : "", ext[0] ? ext : "lst" );

    }

    /*

    **  Now use basic function

    */

    return open_printer_name (pname, width, html, title );

}

/*----------------------------------------------------------------------------

 * FUNCTION           : open_printer_name

 *

 * DESCRIPTION        : Open a printer with a known name

 *

 *      This function is called to open the printer and prepare to print

 *

 *  Parameters:

 *      pname       Name of print file

 *      width       Width of the printed file

 *      html        Printing in HTML mode

 *

 *  Returns:

 *      TRUE if the printer can be attached

 *

 *

 *  Note: Use an "htm" file extension as DOS cannot handle 4 letter extensions

----------------------------------------------------------------------------*/

bool open_printer_name( const char *pname, int width, report_type htmltype, const char *title )

{

    printFileName = filepath;

    switch (htmltype)

    {

    case printed: printFileName.append("webtxt/");  break;

    case html: printFileName.append("web/");  break;

    default: printFileName.append("text/");  break;

    }

    /*

    ** Ensure that the directory exists

    */

    {

        QDir dir(filepath);

        dir.mkpath(printFileName);

    }

    /*

    ** Append the filename to the directory

    */

    printFileName.append(pname);

    print_width = width ? width : 80;

    print_col = 0;

    print_line = 0;

    print_underline_start = -1;

    print_underline_end = -1;

    print_current_colour = 0;

    /*

    **  Open the printer

    **  Ensure that it is opened in text mode

    */

    if( ( pfile = fopen( qPrintable(printFileName), "wt" ) ) != NULL )

    {

        time( &pri_time );                       /* Latch the time */

        /*

        **  Print out the HTML file header

        */

        if ( htmltype )

        {

            print( "<HTML>\n" );

            print( "<HEAD>\n" );

            print( "<TITLE>%s - %s</TITLE>\n", config.event_name, title );

//            print( "<LINK rel=\"stylesheet\" href=\"brmr.css\" type=\"text/css\">\n");

            print( "</HEAD>\n" );

            print( "<BODY LANG=\"en-US\">\n" );

            print( "<PRE>" );

            print_html = html;

        }

        /*

        **  Print out a common banner

        */

        printbanner(title);

    }

    else

    {

        MainWindow::showMessage("Printer not available");

    }

    return ( pfile != 0 );

}

const QString &getPrinterFile(void)

{

    return printFileName;

}

/*========================================================================

 *

 *  Close the printer

 *

 *  Purpose:

 *      This function is called to close and release the printer

 *      All reports are terminated with a formfeed

 *

 *  Parameters:

 *      None

 *

 *  Returns:

 *      TRUE if the printer channel can be released

 *

 *========================================================================*/

bool close_printer(void)

{

    if ( print_html )

    {

        print_html = text;

        print( "</PRE>\n" );

        print( "</BODY>\n" );

        print( "</HTML>\n" );

    }

    else

    {

        print( "\014" );

    }

    fclose( pfile );

    return ( TRUE );

}

/*========================================================================

 *

 *  Print to to the printer

 *

 *  Purpose:

 *      This function is called to do print data on the printer

 *      Track current character index so as to assist in tracking the

 *      use of underline.

 *

 *  Assume:

 *      New lines are at the end of a line printed. This does allow for

 *      a single new-line.

 *

 *

 *  Parameters:

 *      Standard printf type parameters

 *

 *  Returns:

 *      TRUE : Operation was succesful

 *

 *========================================================================*/

int print( const char *format, ... )

{

    va_list     ap;

    char        pp[200];

    int         len;

    bool        eol = FALSE;

    /*

    **  If this is the start of a new line then we may need to colour it

    */

    if ( print_col == 0 && print_html && (print_line & 1) )

    {

        print_colour( HTML_COLOUR_GREEN );

    }

    /*

    **  If this is the start of a new line then we may need to perform

    **  a perf-skip

    */

    if ( print_col == 0 && print_line && ! print_html && config.lines_per_page && config.perf_skip )

    {

        if ( 0 == ((print_line + 2) % (config.lines_per_page - config.perf_skip)) )

        {

            int count = config.perf_skip;

            while ( count-- )

                fwrite( "\n", 1, 1, pfile );

        }

    }

    va_start( ap, format );

    len = vsprintf( pp, format, ap );

    va_end( ap );

    /*

    **  Detect the end of a line and flag for later processing

    */

    if ( len > 0 && pp[len - 1] == '\n' )

    {

        len--;

        eol = TRUE;

    }

    if ( len )

    {

        fwrite( pp, 1, len, pfile );

        print_col += len;

    }

    /*

    **  Perform End of Line operation before printing the final newline

    */

    if ( eol )

    {

        print_line++;

        /*

        **  Detect the end of a non-HTML underline

        */

        print_underline ( FALSE );

        if ( print_underline_start < print_underline_end )

        {

            int length;

            fwrite( "\n", 1, 1, pfile );

            length = print_underline_start;

            while( length-- )

                fwrite( " ", 1, 1, pfile );

            length = print_underline_end - print_underline_start;

            while ( length-- )

                fwrite( "=", 1, 1, pfile );

        }

        print_underline_start = -1;

        print_underline_end = -1;

        print_col = 0;

        /*

        **  Track the background colour

        */

        if ( print_html )

        {

            print_colour( 0 );

        }

        /*

        **  Now print the final newline

        */

        fwrite( "\n", 1, 1, pfile );

        len ++;

    }

    return ( len );

}

/*========================================================================

 *

 *  Print to to the printer

 *

 *  Purpose:

 *      This function is called to do print data on the printer

 *

 *  Assume:

 *      One CSV field per print

 *      New lines are at the end of a line printed. This does allow for

 *      a single new-line.

 *

 *

 *  Parameters:

 *      Standard printf type parameters

 *

 *  Returns:

 *      TRUE : Operation was succesful

 *

 *========================================================================*/

int csv_print( const char *format, ... )

{

    va_list     ap;

    char        pp[200];

    int         len;

    bool        eol = FALSE;

    va_start( ap, format );

    len = vsprintf( pp, format, ap );

    va_end( ap );

    /*

    **  Detect the end of a line and flag for later processing

    */

    if ( len > 0 && pp[len - 1] == '\n' )

    {

        len--;

        eol = TRUE;

    }

    if ( ! eol )

    {

        if ( print_col )

            fwrite( ",", 1, 1, pfile );

        fwrite( "\"", 1, 1, pfile );

        fwrite( pp, 1, len, pfile );

        print_col += len;

        fwrite( "\"", 1, 1, pfile );

    }

    /*

    **  Perform End of Line operation before printing the final newline

    */

    if ( eol )

    {

        print_line++;

        print_col = 0;

        /*

        **  Now print the final newline

        */

        fwrite( "\n", 1, 1, pfile );

        len ++;

    }

    return ( len );

}

/*========================================================================

 *

 *  Print to to the printer without any frills

 *

 *  Purpose:

 *      This function is called to do print data on the printer

 *

 *  Parameters:

 *      Standard printf type parameters

 *

 *  Returns:

 *      TRUE : Operation was succesful

 *

 *========================================================================*/

int raw_print( const char *format, ... )

{

    va_list     ap;

    char        pp[200];

    int         len;

    va_start( ap, format );

    len = vsprintf( pp, format, ap );

    va_end( ap );

    fwrite( pp, 1, len, pfile );

    return ( len );

}

/*========================================================================

 *

 *  Control bolding

 *

 *  Purpose:

 *      This function is called to turn bolding on and off

 *      This function will ONLY affect HTML printing

 *

 *  Parameters:

 *      on              - TRUE

 *

 *  Returns:

 *      Nothing

 *

 *========================================================================*/

void print_bold( bool on )

{

    if ( print_html )

    {

        if ( on )

            raw_print( "<B>" );

        else

            raw_print( "</B>" );

    }

}

/*========================================================================

 *

 *  Control underline

 *

 *  Purpose:

 *      This function is called to turn underline on and off

 *      This function will ONLY affect HTML printing and Non-HTML printing

 *      But in a different manner

 *

 *  Parameters:

 *      on              - TRUE

 *

 *  Returns:

 *      Nothing

 *

 *========================================================================*/

void print_underline( bool on )

{

    if ( print_html )

    {

        /*

        **  For HTML printing underline is simple

        */

        if ( on )

        {

            raw_print( "<U>" );

            print_underline_start = 1;

        }

        else if ( print_underline_start > 0 )

        {

            raw_print( "</U>" );

            print_underline_start = 0;

        }

    }

    else

    {

        /*

        **  Non-HTML printing

        **  Store underline start and stop column

        */

        if ( on )

            print_underline_start = print_col;

        else if ( print_underline_start >= 0 )

            print_underline_end = print_col;

    }

}

/*========================================================================

 *

 *  Control colour - HTML printing only

 *

 *  Purpose:

 *      This function is called to change the background colour within

 *      HTML text

 *

 *  Parameters:

 *      colour      - Colour control string

 *                    or NULL to trun colour OFF

 *

 *

 *  Returns:

 *      Nothing

 *

 *========================================================================*/

void print_colour( long colour )

{

    if ( print_html )

    {

        if ( print_current_colour )

        {

            raw_print( "</SPAN>" );

            print_current_colour = 0L;

        }

        if ( colour )

        {

            print_current_colour = colour;

            raw_print( "<SPAN STYLE=\"background: #%6.6lx\">", colour );

        }

    }

}

/*========================================================================

 *

 *  Print a page banner

 *

 *  Purpose:

 *      This function is called to print a page banner

 *

 *  Parameters:

 *      None

 *

 *  Returns:

 *      Nothing

 *

 *========================================================================*/

void printbanner( const char *title )

{

    int         l, s;

    if ( !title )

        return;

    l = strlen( config.event_name );

    s = ( print_width - l ) / 2;

    print( "%*s", s, "" );

    if ( print_html == html )

        print( "<A HREF=\"%s\">", p_filename(filebase, "index" ,"html"));

    print_underline( TRUE);

    print_bold( TRUE );

    print( "%s", config.event_name );

    print_bold( FALSE );

    print_underline( FALSE );

    if ( print_html == html )

        print( "</A>" );

    print( "\n" );

    /*

    **  Print out one line with the report title

    **  on the left and the report time on the right

    */

    if ( title )

        print( "%s", title );

    s = print_width - print_col - 24 - 4;

    print( "%*s", s , "" );

    print( "%.24s", ctime( &pri_time ) );

    print( "\n" );

    print( "\n" );

}

/*========================================================================

 *

 *  Format a filename

 *

 *  Purpose:

 *      This function is called create a suitably formatted filename

 *      for use in an HTML tag or by the file system

 *

 *      Currently all output filenames are created in uppercase

 *      This is a limitation of DOS

 *      This function is used to ensure that all files are created with

 *      an uppercase name and that all HTML file references are also

 *      in uppercase.

 *

 *

 *  Parameters:

 *      filename        - Base filename

 *      Suffix          - Optional part of the basename

 *                        If present is used to create part of the basename

 *      ext             - Extension

 *

 *  Returns:

 *      Address of a static string that will reference the file

 *

 *========================================================================*/

char * p_filename( const char *filename, const char *suffix, const char *ext )

{

    char    *name;

    char    *cptr;

#ifndef LONG_FILE_NAMES

    /*

    **  Limit the filename to 8.3 format

    **  This is a limitation of the underlying file access library

    **  and may be removed in the future

    */

    if ( suffix[0] )

        name = tprintf ( "%.4s_%.3s.%.3s", filename, suffix, ext );

    else

        name = tprintf ( "%.8s.%.3s", filename, ext );

    /*

    **  Uppercase the filename

    */

    cptr = name;

    while ( *cptr )

    {

        *cptr = toupper( *cptr );

        cptr++;

    }

#else

    /*

    **  This compiler and runtime library supports

    **  long filenames - created printed filenames in lower case

    */

    if ( suffix[0] )

        name = tprintf ( "%s_%s.%s", filename, suffix, ext );

    else

        name = tprintf ( "%s_%s.%s", filename, ext, "txt" );

    cptr = name;

    while ( *cptr )

    {

        *cptr = tolower( *cptr );

        cptr++;

    }

#endif

    return( name );

}

/*========================================================================

 *

 *  Print to a temp string buffer

 *

 *  Purpose:

 *      This function is similar to sprintf() except that the routine

 *      maintains a list of string buffers and will return one to the

 *      user.

 *

 *      This function allows a user to create small, short lived

 *      printed strings, without the memory managment overhead.

 *

 *      Down-side. Use the string quickly.

 *                 Strings have a limited length

 *

 *  Parameters:

 *      Standard printf type parameters

 *

 *  Returns:

 *      TRUE : Operation was succesful

 *

 *========================================================================*/

#define TBUF_COUNT  5               /* Number of buffers */

#define TBUF_LENGTH 100             /* Max length of a single print */

char *tprintf( const char *format, ... )

{

    static char tbuf[TBUF_COUNT][TBUF_LENGTH];

    static int  index = 0;

    va_list     ap;

    char       *pp;

    /*

    **  Get the next entry from the small store

    */

    index++;

    if( index >= TBUF_COUNT )

        index = 0;

    pp = tbuf[index];

    va_start( ap, format );

    vsprintf( pp, format, ap );

    va_end( ap );

    return ( pp );

}

/*----------------------------------------------------------------------------

** FUNCTION           : to_hex

**

** DESCRIPTION        : Converts an integer value to its hex character

**

**

** INPUTS             : code        - Code to convert

**

** RETURNS            : Character representation

**

----------------------------------------------------------------------------*/

char to_hex(char code)

{

  static char hex[] = "0123456789abcdef";

  return hex[code & 0x0f];

}

/*----------------------------------------------------------------------------

** FUNCTION           : url_encode

**

** DESCRIPTION        : URL encoded version of a string

**

**

** INPUTS             : string to encode

**

** RETURNS            : Encoded string

**

** WARNING            : Uses a small circular pool of strings so that the

**                      user doesn't need to worry about string release

**

----------------------------------------------------------------------------*/

char *url_encode(const char *str)

{

    static char tbuf[TBUF_COUNT][TBUF_LENGTH * 3];

    static int  index = 0;

    char       *pp;

    /*

    **  Get the next entry from the small store

    */

    index++;

    if( index >= TBUF_COUNT )

        index = 0;

    pp = tbuf[index];

    const char *pstr = str;

    char *pbuf = pp;

    while (*pstr)

    {

        if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~')

            *pbuf++ = *pstr;

        else if (*pstr == ' ')

            *pbuf++ = '+';

        else

        {

            *pbuf++ = '%';

            *pbuf++ = to_hex(*pstr >> 4);

            *pbuf++ = to_hex(*pstr & 15);

        }

        pstr++;

    }

    *pbuf = '\0';

  return pp;

}

/********************************* EOF ***********************************/