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command.c

/*
 * Copyright 1993, 1995 Christopher Seiwald.
 *
 * This file is part of Jam - see jam.c for Copyright information.
 */

/*
 * command.c - maintain lists of commands
 *
 * 01/20/00 (seiwald) - Upgraded from K&R to ANSI C
 * 09/08/00 (seiwald) - bulletproof PIECEMEAL size computation
 */

# include "jam.h"

# include "lists.h"
# include "parse.h"
# include "variable.h"
# include "rules.h"

# include "command.h"

/*
 * cmd_new() - return a new CMD or 0 if too many args
 */

CMD *
cmd_new(
      RULE  *rule,
      LIST  *targets,
      LIST  *sources,
      LIST  *shell,
      int   maxline )
{
      CMD *cmd = (CMD *)malloc( sizeof( CMD ) );

      cmd->rule = rule;
      cmd->shell = shell;
      cmd->next = 0;

      lol_init( &cmd->args );
      lol_add( &cmd->args, targets );
      lol_add( &cmd->args, sources );

      /* Bail if the result won't fit in maxline */
      /* We don't free targets/sources/shell if bailing. */

      if( var_string( rule->actions, cmd->buf, maxline, &cmd->args ) < 0 )
      {
          cmd_free( cmd );
          return 0;
      }

      return cmd;
}

/*
 * cmd_free() - free a CMD
 */

void
cmd_free( CMD *cmd )
{
      lol_free( &cmd->args );
      list_free( cmd->shell );
      free( (char *)cmd );
}

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