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refactor: refactor validargs.c, make it neater

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This commit is contained in:
Renge 2022-02-12 19:40:27 -05:00
parent a8230d70d3
commit 3d7131a43e
1 changed files with 93 additions and 88 deletions
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181
hw1/src/validargs.c
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@ -4,6 +4,9 @@
#include "global.h"
#include "debug.h"
int parse_arg(char *arg);
int str2int(char *arg);
/**
* @brief Validates command line arguments passed to the program.
* @details This function will validate all the arguments passed to the
@ -23,104 +26,106 @@
int validargs(int argc, char **argv)
{
global_options = 0;
int isValid = 0;
char **ptr = argv;
ptr++;
for (int i = 1; i < argc; i++, ptr++)
switch (parse_arg(*(++ptr)))
{
if (**ptr == '-')
case 8:
global_options = HELP_OPTION;
isValid = 1;
break;
case 4:
if (argc == 2)
{
char *arg = *ptr;
arg++;
switch (*arg)
global_options = VALIDATE_OPTION;
isValid = 1;
}
else
{
if (parse_arg(*(++ptr)) == -1)
{
case 'h':
if (i == 1 && *(++arg) == '\0')
{
global_options = HELP_OPTION;
return 0;
}
else
{
return -1;
}
global_options = VALIDATE_OPTION;
isValid = 1;
}
}
break;
case 2:
if (argc == 2)
{
global_options = CANONICALIZE_OPTION;
isValid = 1;
}
else
{
switch (parse_arg(*(++ptr)))
{
case -1:
global_options = CANONICALIZE_OPTION;
isValid = 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;
}
if (argc == 3)
{
global_options = PRETTY_PRINT_OPTION;
global_options += 4;
return 0;
}
else if (argc == 4)
{
global_options = PRETTY_PRINT_OPTION;
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;
}
case 1:
global_options = CANONICALIZE_OPTION + PRETTY_PRINT_OPTION + str2int(*(++ptr));
isValid = 1;
break;
default:
return -1;
break;
}
}
break;
default:
break;
}
if (isValid)
{
return 0;
}
return -1;
}
int parse_arg(char *arg)
{
int ans = -1;
if (*arg == '-')
{
char arg1 = *(++arg), arg2 = *(++arg);
if (arg2 == '\0')
{
if (arg1 == 'h')
{
ans = 8;
}
else if (arg1 == 'v')
{
ans = 4;
}
else if (arg1 == 'c')
{
ans = 2;
}
else if (arg1 == 'p')
{
ans = 1;
}
}
}
return ans;
}
int str2int(char *arg)
{
int ans = 0;
while (*arg != '\0')
{
if (*arg <= '9' && *arg >= '0')
{
ans = ans * 10 + (*arg - '0');
arg++;
}
else
{
ans = 4;
break;
}
}
return ans;
}