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feat: implemented validargs.c

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This commit is contained in:
Renge 2022-02-12 16:47:38 -05:00
parent f2e7a5fbac
commit c85f4e85a1
1 changed files with 101 additions and 4 deletions
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103
hw1/src/validargs.c
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@ -20,7 +20,104 @@
* of the selected program options.
*/
int validargs(int argc, char **argv) {
// TO BE IMPLEMENTED
abort();
int validargs(int argc, char **argv)
{
char **ptr = argv;
ptr++;
for (int i = 1; i < argc; i++, ptr++)
{
if (**ptr == '-')
{
char *arg = *ptr;
arg++;
switch (*arg)
{
case 'h':
if (i == 1 && *(++arg) == '\0')
{
global_options = HELP_OPTION;
return 0;
}
else
{
return -1;
}
break;
case 'v':
if (i == 1 && *(++arg) == '\0' && argc == 2)
{
global_options = VALIDATE_OPTION;
return 0;
}
else
{
return -1;
}
break;
case 'c':
if (i == 1 && *(++arg) == '\0')
{
if (argc == 2)
{
global_options = CANONICALIZE_OPTION;
return 0;
}
else
{
ptr++;
if (**ptr != '-')
{
return -1;
}
arg = *ptr;
if (*(++arg) != 'p')
{
return -1;
}
if (*(++arg) != '\0')
{
return -1;
}
global_options = PRETTY_PRINT_OPTION;
if (argc == 3)
{
return 0;
}
else if (argc == 4)
{
int indent_value = 0;
arg = *(++ptr);
while (*arg != '\0')
{
if (*arg <= '9' && *arg >= '0')
{
indent_value = indent_value * 10 + (*arg - '0');
arg++;
}
else
{
return 1;
}
}
global_options += indent_value;
return 0;
}
else
{
return -1;
}
}
}
else
{
return -1;
}
break;
default:
return -1;
break;
}
}
}
return -1;
}