bool ScanParams( int argc, const char * argv[] )
/**********************************************/
{
int switchchar;
int nofilenames; /* number of filename parms read so far */
bool contok; /* continue with main execution */
int currarg;
nofilenames = 0;
contok = true;
switchchar = _dos_switch_char();
DefaultParms();
for (currarg = 1; currarg < argc && contok; currarg++) {
if (*argv[ currarg ] == switchchar || *argv[ currarg ] == '-') {
contok = ScanOptionsArg( argv[ currarg ] + 1 ) && contok;
} else if (*argv[ currarg ] == '?') {
CmdLineParms.PrintHelp = true;
contok = false;
} else if (nofilenames == 0) {
strncpy( CmdLineParms.FileName, argv[ currarg ], _MAX_PATH );
nofilenames++;
} else {
puts( "Error: Too many arguments on command line" );
contok = false;
}
}
if (contok) {
switch (nofilenames) {
case 0:
puts( "Error: filename required." );
contok = false;
break;
default:
CheckExtention( CmdLineParms.FileName );
break;
}
}
return( contok );
}
static bool scanEnvVarOrFile( const char *name )
/**********************************************/
{
/*
* Pass nofilenames and analysis of getenv(name) into argc and argv
* to doScanParams. Return view on usability of data. (true is usable.)
*
* Recursion is supported but circularity is rejected.
*/
typedef struct VarInfo {
struct VarInfo *next;
char *name;
char **argv; /* points into buf */
char buf[1]; /* dynamic array */
} VarInfo;
int argc;
VarInfo *info;
static VarInfo *stack = NULL; // Needed to detect recursion.
size_t argvsize;
size_t argbufsize;
const char *optstring;
size_t varlen; // size to hold name copy.
bool result; // doScanParams Result.
char fbuf[512];
optstring = PP_GetEnv( name );
if( optstring == NULL ) {
FILE *fh;
fh = fopen( name, "rt" );
if( fh == NULL ) {
// RcWarning( ERR_ENV_VAR_NOT_FOUND, name );
return( true );
}
fgets( fbuf, sizeof( fbuf ), fh );
fclose( fh );
optstring = fbuf;
}
// This used to cause stack overflow: set foo=@foo && wrc @foo.
for( info = stack; info != NULL; info = info->next ) {
#if defined( __UNIX__ )
if( strcmp( name, info->name ) == 0 ) { // Case-sensitive
#else
if( stricmp( name, info->name ) == 0 ) { // Case-insensitive
#endif
// RcFatalError( ERR_RCVARIABLE_RECURSIVE, name );
}
}
argc = ParseVariable( optstring, NULL, NULL ); // count parameters.
argbufsize = strlen( optstring ) + 1 + argc; // inter-parameter spaces map to 0
argvsize = argc * sizeof( char * ); // sizeof argv[argc+1]
varlen = strlen( name ) + 1; // Copy taken to detect recursion.
info = malloc( sizeof( *info ) + argbufsize + argvsize + varlen );
info->next = stack;
stack = info; // push info on stack
info->argv = (char **)info->buf;
ParseVariable( optstring, info->argv, info->buf + argvsize );
info->name = info->buf + argvsize + argbufsize;
strcpy( info->name, name );
result = doScanParams( argc, info->argv );
stack = info->next; // pop stack
free( info );
return( result );
}
static bool doScanParams( int argc, char *argv[] )
/************************************************/
{
const char *arg;
int switchchar;
bool contok; /* continue with main execution */
int currarg;
contok = true;
switchchar = _dos_switch_char();
for( currarg = 0; currarg < argc && contok; currarg++ ) {
arg = argv[currarg];
if( *arg == switchchar || *arg == '-' ) {
contok = ScanOptionsArg( arg + 1 ) && contok;
} else if( *arg == '@' ) {
contok = scanEnvVarOrFile( arg + 1 ) && contok;
} else if( *arg == '?' ) {
wcpp_quit( usageMsg, NULL );
// contok = false;
} else {
filenames = realloc( (void *)filenames, ( nofilenames + 1 ) * sizeof( char * ) );
filenames[nofilenames++] = my_strdup( arg );
}
}
return( contok );
}
int main( int argc, char *argv[] )
{
int ch;
int i;
int j;
int rc;
FILE *fo;
if( argc < 2 ) {
wcpp_quit( usageMsg, "No filename specified\n" );
} else if( argc == 2 ) {
if( !strcmp( argv[1], "?" ) ) {
wcpp_quit( usageMsg, NULL );
}
}
PP_IncludePathInit();
rc = EXIT_FAILURE;
if( doScanParams( argc - 1, argv + 1 ) && nofilenames != 0 ) {
PP_Init( '#' );
fo = stdout;
if( out_filename != NULL ) {
fo = fopen( out_filename, "wb" );
}
rc = EXIT_SUCCESS;
for( i = 0; i < nofilenames; ++i ) {
if( PP_FileInit( filenames[i], flags, NULL ) != 0 ) {
fprintf( stderr, "Unable to open '%s'\n", filenames[i] );
rc = EXIT_FAILURE;
break;
}
for( j = 0; j < numdefs; j++ ) {
PP_Define( defines[j] );
}
for( ;; ) {
ch = PP_Char();
if( ch == EOF )
break;
#ifndef __UNIX__
if( ch == '\n' )
fputc( '\r', fo );
#endif
fputc( ch, fo );
}
PP_FileFini();
}
if( fo == stdout ) {
fflush( fo );
} else if( fo != NULL ) {
fclose( fo );
}
PP_Fini();
}
if( out_filename != NULL ) {
free( out_filename );
}
for( i = 0; i < nofilenames; ++i ) {
free( filenames[i] );
}
free( (void *)filenames );
for( i = 0; i < numdefs; i++ ) {
free( defines[i] );
}
free( (void *)defines );
PP_IncludePathFini();
if( rc == EXIT_FAILURE && nofilenames == 0 ) {
wcpp_quit( usageMsg, "No filename specified\n" );
}
return( rc );
}