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|
/************************************************************************/
/* */
/* Utility functions for printing. */
/* */
/************************************************************************/
# include "appUtilConfig.h"
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include "utilPrinter.h"
# include <appDebugon.h>
/************************************************************************/
/* */
/* Find out what printers are available on the system. */
/* */
/* 1) BSD/Linux style. */
/* 2) AIX style. ( Thanks to Marc Selis from axi.nl ) */
/* 3) SysV/LPRng style. */
/* */
/* NOTE: Before the CUPS, all commands were tried. Now that CUPS */
/* implements them both on the same machine, the first one that */
/* returns any printers is assumed to return them all. */
/* */
/************************************************************************/
/* 2,3 */
static int utilPrinterSetLpCommand( PrintDestination * pd,
const char * name,
int l )
{
pd->pdCommand= (char *)malloc( l+ 12 );
if ( ! pd->pdCommand )
{ LXDEB(l,pd->pdCommand); return -1; }
sprintf( pd->pdCommand, "lp -s -d '%s'", name );
pd->pdPrintKind= APPprinterPIPE;
pd->pdPrinterName= (char *)malloc( l+ 1 );
if ( ! pd->pdPrinterName )
{ LXDEB(l,pd->pdPrinterName); return -1; }
pd->pdCommandLength= strlen( pd->pdCommand );
pd->pdPercentCount= 0;
strcpy( pd->pdPrinterName, name );
return 0;
}
/* 1 */
static int utilPrinterGetLprPrinters( const char * command,
int * pDefaultPrinter,
int * pPrinterCount,
PrintDestination ** pDestinations )
{
char scratch[250+1];
int l;
FILE * f;
int found= 0;
PrintDestination * fresh;
int count= *pPrinterCount;
const char * defaultPrinterName;
f= popen( command, "r" );
if ( ! f )
{ return 0; }
while( fgets( scratch, 250, f ) )
{
l= strlen( scratch );
if ( l > 0 && scratch[l-1] == '\n' )
{ scratch[l-1]= '\0'; }
if ( scratch[0] == '\t' || scratch[l-2] != ':' )
{ continue; }
scratch[l-2]= '\0';
fresh= (PrintDestination *)realloc( *pDestinations,
(count+ 1)*sizeof( PrintDestination ) );
if ( ! fresh )
{ XDEB(fresh); return -1; }
*pDestinations= fresh;
fresh += count;
fresh->pdCommand= (char *)malloc( l+ 23 );
if ( ! fresh->pdCommand )
{ LXDEB(l,fresh->pdCommand); return -1; }
# if 0
Has the advantage that there is no maximum on the file size.
Has the disadvantage that it does not work on SuSE Linux 6.0
sprintf( fresh->pdCommand, "lpr -r -s -P '%s' '%s'",
scratch, "%f" );
# else
sprintf( fresh->pdCommand, "lpr -r -P '%s' '%s'",
scratch, "%f" );
# endif
fresh->pdPrintKind= APPprinterTMPFILE;
fresh->pdPrinterName= strdup( scratch );
if ( ! fresh->pdPrinterName )
{ LXDEB(l,fresh->pdPrinterName); return -1; }
fresh->pdCommandLength= strlen( fresh->pdCommand );
fresh->pdPercentCount= 1;
found++; count++;
}
pclose( f );
defaultPrinterName= getenv( "PRINTER" );
if ( defaultPrinterName )
{
PrintDestination * pd= *pDestinations;
for ( l= count- found; l < count; pd++, l++ )
{
if ( ! strcmp( defaultPrinterName, pd->pdPrinterName ) )
{ *pDefaultPrinter= l; break; }
}
}
*pPrinterCount= count;
return found;
}
/* 2 */
static int utilPrinterGetAixPrinters( const char * command,
int * pDefaultPrinter,
int * pPrinterCount,
PrintDestination ** pDestinations )
{
char scratch[250+1];
int l;
FILE * f;
int found= 0;
PrintDestination * fresh;
int count= *pPrinterCount;
const char * defaultPrinterName;
f= popen( command, "r" );
if ( ! f )
{ return 0; }
if ( fgets( scratch, 250, f ) && fgets( scratch, 250, f ) )
{
while( fgets( scratch, 250, f ) )
{
char * s= strchr( scratch, ' ' );
if ( ! s )
{ continue; }
*s= '\0'; l= s- scratch;
fresh= (PrintDestination *)realloc( *pDestinations,
(count+ 1)*sizeof( PrintDestination ) );
if ( ! fresh )
{ XDEB(fresh); return -1; }
*pDestinations= fresh;
if ( utilPrinterSetLpCommand( fresh+ count, scratch, l ) )
{ LDEB(l); return -1; }
found++; count++;
}
}
pclose( f );
defaultPrinterName= getenv( "LPDEST" );
if ( defaultPrinterName )
{
PrintDestination * pd= *pDestinations;
for ( l= count- found; l < count; pd++, l++ )
{
if ( ! strcmp( defaultPrinterName, pd->pdPrinterName ) )
{ *pDefaultPrinter= l; break; }
}
}
*pPrinterCount= count;
return found;
}
/* 3 */
static int utilPrinterGetLpPrinters( const char * command,
int * pDefaultPrinter,
int * pPrinterCount,
PrintDestination ** pDestinations )
{
char scratch[250+1];
int l;
FILE * f;
int found= 0;
PrintDestination * fresh;
int count= *pPrinterCount;
const char * defaultPrinterName;
/* 2 */
f= popen( command, "r" );
if ( ! f )
{ return 0; }
while( fgets( scratch, 250, f ) )
{
char * s= strchr( scratch, ' ' );
if ( ! s )
{ continue; }
*s= '\0'; l= s- scratch;
fresh= (PrintDestination *)realloc( *pDestinations,
(count+ 1)*sizeof( PrintDestination ) );
if ( ! fresh )
{ XDEB(fresh); return -1; }
*pDestinations= fresh;
if ( utilPrinterSetLpCommand( fresh+ count, scratch, l ) )
{ LDEB(l); return -1; }
found++; count++;
}
pclose( f );
defaultPrinterName= getenv( "LPDEST" );
if ( defaultPrinterName )
{
PrintDestination * pd= *pDestinations;
for ( l= count- found; l < count; pd++, l++ )
{
if ( ! strcmp( defaultPrinterName, pd->pdPrinterName ) )
{ *pDefaultPrinter= l; break; }
}
}
*pPrinterCount= count;
return found;
}
int utilPrinterGetPrinters( int * pPrinterCount,
int * pDefaultPrinter,
PrintDestination ** pDestinations,
const char * customCommand,
const char * customName )
{
PrintDestination * pd= (PrintDestination *)0;
int count= 0;
int defaultPrinter= -1;
/* 1 */
if ( count == 0 )
{
utilPrinterGetLprPrinters( "( lpc status ) 2>/dev/null",
&defaultPrinter, &count, &pd );
}
/* 1b */
if ( count == 0 )
{
utilPrinterGetLprPrinters( "( /usr/sbin/lpc status ) 2>/dev/null",
&defaultPrinter, &count, &pd );
}
/* 2 */
if ( count == 0 )
{
utilPrinterGetAixPrinters( "( enq -As ) 2>/dev/null",
&defaultPrinter, &count, &pd );
}
/* 3 */
if ( count == 0 )
{
utilPrinterGetLpPrinters( "( lpstat -a ) 2>/dev/null",
&defaultPrinter, &count, &pd );
}
if ( defaultPrinter < 0 && count > 0 )
{ defaultPrinter= 0; }
if ( customName || customCommand )
{
if ( ! customName )
{ XXDEB(customName,customCommand); }
if ( ! customCommand )
{ XXDEB(customName,customCommand); }
}
if ( customName && customCommand )
{
const char * p;
PrintDestination * fresh;
fresh= (PrintDestination *)realloc( pd,
(count+ 1)*sizeof( PrintDestination ) );
if ( ! fresh )
{ XDEB(fresh); return -1; }
pd= fresh;
fresh += count;
fresh->pdCommand= strdup( customCommand );
fresh->pdPrinterName= strdup( customName );
fresh->pdCommandLength= strlen( customCommand );
fresh->pdPercentCount= 0;
p= customCommand;
while( *p )
{
if ( p[0] == '%' && p[1] == 'f' )
{ fresh->pdPercentCount++; }
p++;
}
if ( fresh->pdPercentCount > 0 )
{ fresh->pdPrintKind= APPprinterTMPFILE; }
else{ fresh->pdPrintKind= APPprinterPIPE; }
if ( fresh->pdCommand && fresh->pdPrinterName )
{ defaultPrinter= count++; }
else{ XXDEB(fresh->pdCommand,fresh->pdPrinterName); }
}
*pPrinterCount= count;
*pDefaultPrinter= defaultPrinter;
*pDestinations= pd;
return 0;
}
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