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[/] [openrisc/] [trunk/] [or1ksim/] [argtable2/] [arg_dbl.c] - Rev 771
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/********************************************************************* This file is part of the argtable2 library. Copyright (C) 1998-2001,2003-2008 Stewart Heitmann sheitmann@users.sourceforge.net The argtable2 library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. **********************************************************************/ /* config.h must be included before anything else */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif #include "argtable2.h" /* local error codes */ enum {EMINCOUNT=1,EMAXCOUNT,EBADDOUBLE}; static void resetfn(struct arg_dbl *parent) { /*printf("%s:resetfn(%p)\n",__FILE__,parent);*/ parent->count=0; } static int scanfn(struct arg_dbl *parent, const char *argval) { int errorcode = 0; if (parent->count == parent->hdr.maxcount) { /* maximum number of arguments exceeded */ errorcode = EMAXCOUNT; } else if (!argval) { /* a valid argument with no argument value was given. */ /* This happens when an optional argument value was invoked. */ /* leave parent arguiment value unaltered but still count the argument. */ parent->count++; } else { double val; char *end; /* extract double from argval into val */ val = strtod(argval,&end); /* if success then store result in parent->dval[] array otherwise return error*/ if (*end==0) parent->dval[parent->count++] = val; else errorcode = EBADDOUBLE; } /*printf("%s:scanfn(%p) returns %d\n",__FILE__,parent,errorcode);*/ return errorcode; } static int checkfn(struct arg_dbl *parent) { int errorcode = (parent->count < parent->hdr.mincount) ? EMINCOUNT : 0; /*printf("%s:checkfn(%p) returns %d\n",__FILE__,parent,errorcode);*/ return errorcode; } static void errorfn(struct arg_dbl *parent, FILE *fp, int errorcode, const char *argval, const char *progname) { const char *shortopts = parent->hdr.shortopts; const char *longopts = parent->hdr.longopts; const char *datatype = parent->hdr.datatype; /* make argval NULL safe */ argval = argval ? argval : ""; fprintf(fp,"%s: ",progname); switch(errorcode) { case EMINCOUNT: fputs("missing option ",fp); arg_print_option(fp,shortopts,longopts,datatype,"\n"); break; case EMAXCOUNT: fputs("excess option ",fp); arg_print_option(fp,shortopts,longopts,argval,"\n"); break; case EBADDOUBLE: fprintf(fp,"invalid argument \"%s\" to option ",argval); arg_print_option(fp,shortopts,longopts,datatype,"\n"); break; } } struct arg_dbl* arg_dbl0(const char* shortopts, const char* longopts, const char *datatype, const char *glossary) { return arg_dbln(shortopts,longopts,datatype,0,1,glossary); } struct arg_dbl* arg_dbl1(const char* shortopts, const char* longopts, const char *datatype, const char *glossary) { return arg_dbln(shortopts,longopts,datatype,1,1,glossary); } struct arg_dbl* arg_dbln(const char* shortopts, const char* longopts, const char *datatype, int mincount, int maxcount, const char *glossary) { size_t nbytes; struct arg_dbl *result; /* foolproof things by ensuring maxcount is not less than mincount */ maxcount = (maxcount<mincount) ? mincount : maxcount; nbytes = sizeof(struct arg_dbl) /* storage for struct arg_dbl */ + (maxcount+1) * sizeof(double); /* storage for dval[maxcount] array plus one extra for padding to memory boundary */ result = (struct arg_dbl*)malloc(nbytes); if (result) { size_t addr; size_t rem; /* init the arg_hdr struct */ result->hdr.flag = ARG_HASVALUE; result->hdr.shortopts = shortopts; result->hdr.longopts = longopts; result->hdr.datatype = datatype ? datatype : "<double>"; result->hdr.glossary = glossary; result->hdr.mincount = mincount; result->hdr.maxcount = maxcount; result->hdr.parent = result; result->hdr.resetfn = (arg_resetfn*)resetfn; result->hdr.scanfn = (arg_scanfn*)scanfn; result->hdr.checkfn = (arg_checkfn*)checkfn; result->hdr.errorfn = (arg_errorfn*)errorfn; /* Store the dval[maxcount] array on the first double boundary that immediately follows the arg_dbl struct. */ /* We do the memory alignment purely for SPARC and Motorola systems. They require floats and doubles to be */ /* aligned on natural boundaries */ addr = (size_t)(result+1); rem = addr % sizeof(double); result->dval = (double*)(addr + sizeof(double) - rem); /* printf("addr=%p, dval=%p, sizeof(double)=%d rem=%d\n", addr, result->dval, (int)sizeof(double), (int)rem); */ result->count = 0; } /*printf("arg_dbln() returns %p\n",result);*/ return result; }
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