mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-14 13:50:04 +00:00
131 lines
2.8 KiB
C
131 lines
2.8 KiB
C
/*
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* Copyright 1993, 2000 Christopher Seiwald.
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*
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* This file is part of Jam - see jam.c for Copyright information.
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*/
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/*
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* headers.c - handle #includes in source files
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*
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* Using regular expressions provided as the variable $(HDRSCAN),
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* headers() searches a file for #include files and phonies up a
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* rule invocation:
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*
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* $(HDRRULE) <target> : <include files> ;
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*
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* External routines:
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* headers() - scan a target for include files and call HDRRULE
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*
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* Internal routines:
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* headers1() - using regexp, scan a file and build include LIST
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*
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* 04/13/94 (seiwald) - added shorthand L0 for null list pointer
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* 09/10/00 (seiwald) - replaced call to compile_rule with evaluate_rule,
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* so that headers() doesn't have to mock up a parse structure
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* just to invoke a rule.
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* 03/02/02 (seiwald) - rules can be invoked via variable names
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* 10/22/02 (seiwald) - list_new() now does its own newstr()/copystr()
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* 11/04/02 (seiwald) - const-ing for string literals
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* 12/09/02 (seiwald) - push regexp creation down to headers1().
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*/
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# include "jam.h"
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# include "lists.h"
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# include "parse.h"
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# include "compile.h"
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# include "rules.h"
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# include "variable.h"
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# include "regexp.h"
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# include "headers.h"
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# include "newstr.h"
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static LIST *headers1( const char *file, LIST *hdrscan );
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/*
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* headers() - scan a target for include files and call HDRRULE
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*/
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# define MAXINC 10
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void
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headers( TARGET *t )
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{
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LIST *hdrscan;
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LIST *hdrrule;
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LIST *hdrcache;
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LOL lol;
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if( !( hdrscan = var_get( "HDRSCAN" ) ) ||
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!( hdrrule = var_get( "HDRRULE" ) ) )
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return;
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/* Doctor up call to HDRRULE rule */
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/* Call headers1() to get LIST of included files. */
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if( DEBUG_HEADER )
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printf( "header scan %s\n", t->name );
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lol_init( &lol );
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lol_add( &lol, list_new( L0, t->name, 1 ) );
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lol_add( &lol, headers1( t->boundname, hdrscan ) );
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if( lol_get( &lol, 1 ) )
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list_free( evaluate_rule( hdrrule->string, &lol, L0 ) );
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/* Clean up */
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lol_free( &lol );
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}
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/*
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* headers1() - using regexp, scan a file and build include LIST
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*/
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static LIST *
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headers1(
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const char *file,
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LIST *hdrscan )
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{
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FILE *f;
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int i;
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int rec = 0;
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LIST *result = 0;
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regexp *re[ MAXINC ];
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char buf[ 1024 ];
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if( !( f = fopen( file, "r" ) ) )
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return result;
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while( rec < MAXINC && hdrscan )
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{
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re[rec++] = regcomp( hdrscan->string );
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hdrscan = list_next( hdrscan );
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}
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while( fgets( buf, sizeof( buf ), f ) )
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{
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for( i = 0; i < rec; i++ )
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if( regexec( re[i], buf ) && re[i]->startp[1] )
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{
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/* Copy and terminate extracted string. */
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char buf2[ MAXSYM ];
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int l = re[i]->endp[1] - re[i]->startp[1];
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memcpy( buf2, re[i]->startp[1], l );
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buf2[ l ] = 0;
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result = list_new( result, buf2, 0 );
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if( DEBUG_HEADER )
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printf( "header found: %s\n", buf2 );
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}
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}
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while( rec )
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free( (char *)re[--rec] );
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fclose( f );
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return result;
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}
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