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author | Juan Manuel Tomas <jtomas1815@gmail.com> | 2021-08-05 01:18:19 -0300 |
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committer | Juan Manuel Tomas <jtomas1815@gmail.com> | 2021-08-05 01:18:19 -0300 |
commit | 98ab1d968030494fbfbe3688929b761382b28b09 (patch) | |
tree | c76b7f02b4484d6dce108e003e1be8e1c76c0ef7 /flag.h | |
download | flag-98ab1d968030494fbfbe3688929b761382b28b09.tar.gz flag-98ab1d968030494fbfbe3688929b761382b28b09.zip |
Diffstat (limited to 'flag.h')
-rw-r--r-- | flag.h | 57 |
1 files changed, 57 insertions, 0 deletions
@@ -0,0 +1,57 @@ +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +#define flag_init main + +int argument_count; +char **arguments; +int docstring_count; +char **docstrings; +int flag_fail; + +int flag_int(const char *flag_name, int default_value, const char *docstring) { + int flag_name_length = strlen(flag_name); + int docstring_length = strlen(docstring); + char *new_docstring = malloc(flag_name_length + 4 + docstring_length); + new_docstring[0] = '\t'; + memcpy(new_docstring + 1, flag_name, flag_name_length); + new_docstring[flag_name_length + 1] = ' '; + memcpy(new_docstring + flag_name_length + 2, docstring, docstring_length); + new_docstring[flag_name_length + 3 + docstring_length] = '\0'; + docstrings[docstring_count] = new_docstring; + docstring_count++; + for (int i = 0; i < argument_count; i++) { + if (strcmp(arguments[i], flag_name) == 0) { + if (i + 1 < argument_count) { + return atoi(arguments[i + 1]); + } else { + flag_fail = 1; + } + } + } + if (flag_fail) { + printf("Usage: %s [flags]\n", arguments[0]); + puts("Available flags:"); + for (int j = 0; j < docstring_count; j++) { + printf("%s\n", docstrings[j]); + } + exit(1); + return 0; + } else { + return default_value; + } +} + +int main_func(); + +int flag_init(int argc, char **argv) { + argument_count = argc; + arguments = argv; + flag_fail = 0; + docstring_count = 0; + docstrings = malloc(argc * sizeof(char *)); + main_func(argc, argv); +} + +#define main main_func |