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/* Copyright (c) 1998, 1999, 2003, 2004 Lance Arsenault, (GNU GPL (v2+))
*/
#include <string.h>
// Get an option argument at index *i;
// if found index the counter *i to the next string.
char *getOpt(const char *shorT, const char *lonG,
int argc, const char **argv, int *i)
{
// check for form long=VALUE
size_t len = 0;
if(*i < argc)
{
char *str = (char *) argv[*i];
for(;*str && *str != '=';str++);
if(*str == '=')
{
len = (size_t) str - (size_t) argv[*i];
str++;
}
if(len && !strncmp(argv[*i],lonG,len)
&& *str != '\0')
{
(*i)++;
return str;
}
}
// check for -a VALUE or --long VALUE
if(((*i + 1) < argc) &&
(!strcmp(argv[*i],lonG) || !strcmp(argv[*i],shorT)))
{
(*i)++;
return (char *) argv[(*i)++];
}
// check for -aVALUE
len=strlen(shorT);
if( (*i < argc) && !strncmp(argv[*i],shorT,len) && argv[*i][len] != '\0')
return (char *) &(argv[(*i)++][len]);
return (char *) NULL;
}
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