Diff: ucArgOptOwner.c

Revision:

0:9e2fc73e5a12

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ucArgOptOwner.c	Mon Oct 12 21:09:07 2015 +0000
@@ -0,0 +1,72 @@
+#include "ucmd_internal.h"
+
+ucArgOpt *ucArgOptOwner_get_arg_opt(ucArgOptOwner *p) {
+    if (NULL == p) return NULL;
+    return p->arg_opt;
+}
+
+ucArgOptOwner *ucArgOptOwner_init(ucArgOptOwner *p, const char *name, const char *desc, ucBool is_required, ucArgOpt *arg_opt) {
+    if (NULL == p) return NULL;
+    if (NULL == ucOpt_init((ucOpt*)p, name, desc, is_required)) return NULL;
+    p->arg_opt = arg_opt;
+    return p;
+}
+
+const char *ucArgOptOwner_format_validation_err(ucArgOptOwner *p, ucCmdLine *cmd, ucArgTok *arg_tok, const char *switch_name) {
+    int max_arg_tok_count;
+
+    /* set the prefix for error messages */
+    const char *validation, *prefix = switch_name == NULL ? ucOpt_validation_err_invalid_argument_prefix : ucOpt_validation_err_invalid_switch_argument_prefix;
+
+    /* get the first argument option */
+    ucArgOpt *arg_opt = ucArgOptOwner_get_arg_opt(p);
+
+    /* check if an argument option does NOT exist */
+    if (NULL == arg_opt) {
+
+        /* check if the argumen token DOES exist */
+        if (NULL != arg_tok) {
+
+            /* the option does NOT exist, but the token DOES, so there's an error */
+            return NULL == switch_name
+                ? ucCmdLine_format_response(cmd, "%sno argument options exist for command \"%s\".", prefix, ucTok_get_value(ucCmdLine_get_cmd_tok(cmd)))
+                : ucCmdLine_format_response(cmd, "%sno argument options exist for switch \"%s\".", prefix, switch_name);
+        }
+
+        /* neither the option nor the token exist, so no error here */
+        return NULL;
+    }
+
+    /* loop through all the argument options */
+    max_arg_tok_count = 0;
+    while (NULL != arg_opt) {
+
+        /* validate this argument option agains the current token */
+        validation = ucArgOpt_format_validation_err(arg_opt, cmd, arg_tok, switch_name);
+        if (NULL != validation) return validation;
+
+        /* get the number of tokens that this option allows */
+        max_arg_tok_count = ucArgOpt_get_max_tok_count(arg_opt);
+
+        /* move to the next option and the next token */
+        arg_opt = ucArgOpt_get_next(arg_opt);
+        arg_tok = ucArgTok_get_next(arg_tok);
+    }
+
+    /* check if we have any remaining tokens */
+    if (NULL != arg_tok) {
+
+        /* check if the last argument option does NOT allow multiple tokens */
+        if (2 > max_arg_tok_count) {
+
+            /* we have remaining tokens but no arguments for them, so there's an error */
+            return NULL == switch_name
+                ? ucCmdLine_format_response(cmd, "%sno option exists for argument \"%s\".", prefix, ucTok_get_value(arg_tok))
+                : ucCmdLine_format_response(cmd, "%sno option exists for \"%s\" argument \"%s\".", prefix, switch_name, ucTok_get_value(arg_tok));
+        }
+    }
+
+    /* return no error */
+    return NULL;
+}
+