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/* $Id: args.c,v 1.19 2008/11/03 23:48:35 rcook Exp $ */
#include "args.h"
#include "debugutil.h"
#include <stdio.h>
#include <string.h>
static int gNumArgs = 0;
static argt *gArgs = NULL;
static int gIgnoreBadArgs = 0;
static int gArgDebug = 0;
/*------------------------------------------------------------------*/
void debug_args(int iYesNo ){
gArgDebug = iYesNo;
}
/*------------------------------------------------------------------*/
void print_args(int argc, char *argv[] ){
int i = 0 ;
printf("Program called as: ");
while (i<argc) {
printf("%s ", argv[i]);
++i;
}
printf("\n");
return ;
}
/*------------------------------------------------------------------*/
void arg_ignore_bad_args(int iYesNo) { gIgnoreBadArgs = iYesNo; }
/*------------------------------------------------------------------*/
void arg_expect_args(argt args[], int numargs) {
gNumArgs = numargs;
if (gArgs) free(gArgs);
gArgs = (argt*)malloc(sizeof(argt)* gNumArgs);
memcpy(gArgs, args, sizeof(argt)*gNumArgs);
return;
}
/*------------------------------------------------------------------*/
argt *arg_find_entry(char *flag){
int argnum = 0;
while (argnum < gNumArgs){
if (!strcmp(gArgs[argnum]._flag, flag))
return &gArgs[argnum];
++argnum;
}
return NULL;
}
/*------------------------------------------------------------------*/
void print_arg_entry(argt *iEntry) {
fprintf(stderr, "arg entry: \n");
fprintf(stderr, " iEntry->_type = %d\n", iEntry->_type);
fprintf(stderr, " iEntry->_flag = %s\n", iEntry->_flag);
fprintf(stderr, " iEntry->_numvals = %d\n", iEntry->_numvals);
switch(iEntry->_type) {
case BOOL_TYPE: /* must be type long**/
case INT_TYPE: /* must be type int* */
if (!iEntry->_values) fprintf(stderr, "(empty)\n");
vectprint(1, ((int*)iEntry->_values), iEntry->_numvals);
break;
case LONG_TYPE: /* must be type long* */
case LONG_ARRAY_TYPE: /* must be type long* */
if (!iEntry->_values) fprintf(stderr, "(empty)\n");
vectprint(1, ((long*)iEntry->_values), iEntry->_numvals);
break;
case FLOAT_TYPE: /* must be type long* */
case FLOAT_ARRAY_TYPE: /* must be type long* */
if (!iEntry->_values) fprintf(stderr, "(empty)\n");
vectprint(1, ((float*)iEntry->_values), iEntry->_numvals);
break;
case DOUBLE_TYPE: /* must be type double* */
case DOUBLE_ARRAY_TYPE: /* must be type double* */
if (!iEntry->_values) fprintf(stderr, "(empty)\n");
vectprint(1, ((long*)iEntry->_values), iEntry->_numvals);
break;
case STRING_TYPE: /* must be type (char *) */
fprintf(stderr, " iEntry->_values = %s\n", (char*)(iEntry->_values));
break;
}
fprintf(stderr, "\n");
return;
}
/*!
"consume" the requested arg in argv by
shifting all later args one to the left
*/
void ConsumeArg(int *argc, char *argv[], int position) {
/* fprintf(stderr, "Before ConsumeArg(%d, argv, %d): ", argc, position);
printargv(argc, argv); */
if (position == 0 && *argc == 1) {
argv[0] = NULL;
} else {
while (position < *argc) {
argv[position] = argv[position+1];
++position;
}
}
(*argc)--;
/* fprintf(stderr, "After ConsumeArg: ");
printargv(argc, argv); */
return;
}
/*------------------------------------------------------------------*/
/*!
arg_parse_args
return 0 on error, 1 if everything's OK.
parse argv, looking for flags set using arg_expect_args, starting at argv[1].
Continue until no more valid args are found.
Removes all parsed args and options from argv and decrements numargs approprately. Bad args are ignored, unless gIgnoreBadArgs is false;
*/
int arg_parse_args(int *argc, char *argv[]){
int argnum=1;
argt*entry=NULL;
if (!gArgs) {
dbprintf(1, "Error parsing args: arg_parse_args called without calling arg_expect_args\n");
return 0;
}
while (argnum < *argc) {
char *theArg = argv[argnum];
if (theArg[0] != '-') {
argnum++;
continue;
}
entry = arg_find_entry(theArg);
if (!entry){
if (gIgnoreBadArgs) {
argnum++;
continue;
}
else {
fprintf(stderr, "Error parsing args: bad arg: \"%s\"\n", theArg);
return 0;
}
} /* end bad flag code */
else {
ConsumeArg(argc, argv, argnum);
if (entry->_type != BOOL_TYPE && argnum == *argc) {
fprintf(stderr, "ERROR -- arg_parse_args -- missing argument to %s\n", entry->_flag);
return 0;
}
if (gArgDebug) fprintf(stderr, "entry type %d\n", entry->_type);
switch (entry->_type){
case BOOL_TYPE:
*((long*)entry->_values)=1;
break;
case INT_TYPE:
{
int *values = (int*)entry->_values;
int valnum=entry->_numvals; while (valnum--) {
if (argnum == *argc) {
fprintf(stderr, "ERROR -- arg_parse_args -- missing argument to %s\n", entry->_flag);
return 0;
}
*values++ = atoi(argv[argnum]);
ConsumeArg(argc, argv, argnum);
}
}
break;
case LONG_TYPE:
case LONG_ARRAY_TYPE:
{
long *values = (long*)entry->_values;
int valnum=entry->_numvals; while (valnum--) {
if (argnum == *argc) {
fprintf(stderr, "ERROR -- arg_parse_args -- missing argument to %s\n", entry->_flag);
return 0;
}
*values++ = strtol(argv[argnum], NULL, 10);
ConsumeArg(argc, argv, argnum);
}
}
break;
case FLOAT_TYPE:
case FLOAT_ARRAY_TYPE:
{
float *values = (float*)entry->_values;
int valnum=entry->_numvals; while (valnum--) {
if (argnum == *argc) {
fprintf(stderr, "ERROR -- arg_parse_args -- missing argument to %s\n", entry->_flag);
return 0;
}
*values++ = strtod(argv[argnum], NULL);
ConsumeArg(argc, argv, argnum);
}
}
break;
case DOUBLE_TYPE:
case DOUBLE_ARRAY_TYPE:
{
double *values = (double*)entry->_values;
int valnum=entry->_numvals; while (--valnum) {
if (argnum == *argc) {
fprintf(stderr, "ERROR -- arg_parse_args -- missing argument to %s\n", entry->_flag);
return 0;
}
*values++ = strtod(argv[argnum], NULL);
ConsumeArg(argc, argv, argnum);
}
}
break;
case STRING_TYPE:
strcpy((char*)entry->_values, argv[argnum]);
ConsumeArg(argc, argv, argnum);
break;
default:
fprintf(stderr, "ERROR -- args.c: Can't identify my own type (%d)!\n",
(int)entry->_type);
return 0;
break;
}
if (gArgDebug) print_arg_entry(entry);
}
}
return 1;
}
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