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62d1e7cc11
With gcc-4.5.2, the stuct option defined in option.h conflicts with an identically named struct in the gcc headers. Renamed the bjam struct to bjam_option in all places where referenced. [SVN r68730]
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/*
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* Copyright 1993, 1995 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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# include "jam.h"
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# include "option.h"
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/*
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* option.c - command line option processing
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*
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* {o >o
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* \<>) "Process command line options as defined in <option.h>.
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* Return the number of argv[] elements used up by options,
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* or -1 if an invalid option flag was given or an argument
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* was supplied for an option that does not require one."
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*/
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int getoptions( int argc, char * * argv, char * opts, bjam_option * optv )
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{
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int i;
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int optc = N_OPTS;
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memset( (char *)optv, '\0', sizeof( *optv ) * N_OPTS );
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for ( i = 0; i < argc; ++i )
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{
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char *arg;
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if ( ( argv[ i ][ 0 ] != '-' ) ||
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( ( argv[ i ][ 1 ] != '-' ) && !isalpha( argv[ i ][ 1 ] ) ) )
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continue;
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if ( !optc-- )
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{
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printf( "too many options (%d max)\n", N_OPTS );
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return -1;
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}
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for ( arg = &argv[ i ][ 1 ]; *arg; ++arg )
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{
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char * f;
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for ( f = opts; *f; ++f )
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if ( *f == *arg )
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break;
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if ( !*f )
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{
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printf( "Invalid option: -%c\n", *arg );
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return -1;
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}
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optv->flag = *f;
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if ( f[ 1 ] != ':' )
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{
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optv++->val = "true";
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}
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else if ( arg[ 1 ] )
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{
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optv++->val = &arg[1];
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break;
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}
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else if ( ++i < argc )
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{
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optv++->val = argv[ i ];
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break;
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}
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else
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{
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printf( "option: -%c needs argument\n", *f );
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return -1;
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}
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}
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}
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return i;
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}
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/*
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* Name: getoptval() - find an option given its character.
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*/
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char * getoptval( bjam_option * optv, char opt, int subopt )
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{
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int i;
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for ( i = 0; i < N_OPTS; ++i, ++optv )
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if ( ( optv->flag == opt ) && !subopt-- )
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return optv->val;
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return 0;
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}
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