From 5068d34c08f951a7ea6257d305a1627b09a95817 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 4 May 2024 19:44:55 +0200
Subject: Adding upstream version 0.11.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/data_scanner.cc | 265 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 265 insertions(+)
 create mode 100644 src/data_scanner.cc

(limited to 'src/data_scanner.cc')

diff --git a/src/data_scanner.cc b/src/data_scanner.cc
new file mode 100644
index 0000000..f270a13
--- /dev/null
+++ b/src/data_scanner.cc
@@ -0,0 +1,265 @@
+/**
+ * Copyright (c) 2007-2012, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <algorithm>
+
+#include "data_scanner.hh"
+
+#include "config.h"
+
+void
+data_scanner::capture_t::ltrim(const char* str)
+{
+    while (this->c_begin < this->c_end && isspace(str[this->c_begin])) {
+        this->c_begin += 1;
+    }
+}
+
+static struct {
+    const char* name;
+} MATCHERS[DT_TERMINAL_MAX] = {
+    {
+        "quot",
+    },
+    {
+        "url",
+    },
+    {
+        "path",
+    },
+    {
+        "mac",
+    },
+    {
+        "date",
+    },
+    {
+        "time",
+    },
+    {
+        "dt",
+    },
+    /* { "qual", pcrepp("\\A([^\\s:=]+:[^\\s:=,]+(?!,)(?::[^\\s:=,]+)*)"), }, */
+    {
+        "ipv6",
+    },
+    {
+        "hexd",
+    },
+
+    {
+        "xmld",
+    },
+    {
+        "xmlt",
+    },
+    {
+        "xmlo",
+    },
+
+    {
+        "xmlc",
+    },
+
+    {
+        "h1",
+    },
+    {
+        "h2",
+    },
+    {
+        "h3",
+    },
+
+    {
+        "coln",
+    },
+    {
+        "eq",
+    },
+    {
+        "comm",
+    },
+    {
+        "semi",
+    },
+
+    {
+        "empt",
+    },
+
+    {
+        "lcur",
+    },
+    {
+        "rcur",
+    },
+
+    {
+        "lsqu",
+    },
+    {
+        "rsqu",
+    },
+
+    {
+        "lpar",
+    },
+    {
+        "rpar",
+    },
+
+    {
+        "lang",
+    },
+    {
+        "rang",
+    },
+
+    {
+        "ipv4",
+    },
+
+    {
+        "uuid",
+    },
+
+    {
+        "cc",
+    },
+    {
+        "vers",
+    },
+    {
+        "oct",
+    },
+    {
+        "pcnt",
+    },
+    {
+        "num",
+    },
+    {
+        "hex",
+    },
+
+    {
+        "mail",
+    },
+    {
+        "cnst",
+    },
+    {
+        "word",
+    },
+    {
+        "sym",
+    },
+    {
+        "line",
+    },
+    {
+        "wspc",
+    },
+    {
+        "dot",
+    },
+    {
+        "escc",
+    },
+    {
+        "csi",
+    },
+
+    {
+        "gbg",
+    },
+};
+
+const char* DNT_NAMES[DNT_MAX - DNT_KEY] = {
+    "key",
+    "pair",
+    "val",
+    "row",
+    "unit",
+    "meas",
+    "var",
+    "rang",
+    "grp",
+};
+
+const char*
+data_scanner::token2name(data_token_t token)
+{
+    if (token < 0) {
+        return "inv";
+    }
+    if (token < DT_TERMINAL_MAX) {
+        return MATCHERS[token].name;
+    }
+    if (token == DT_ANY) {
+        return "any";
+    }
+    return DNT_NAMES[token - DNT_KEY];
+}
+
+bool
+data_scanner::is_credit_card(string_fragment cc) const
+{
+    auto cc_no_spaces = cc.to_string();
+    auto new_end = std::remove_if(cc_no_spaces.begin(),
+                                  cc_no_spaces.end(),
+                                  [](auto ch) { return ch == ' '; });
+    cc_no_spaces.erase(new_end, cc_no_spaces.end());
+    int len = cc_no_spaces.size();
+    int double_even_sum = 0;
+
+    // Step 1: double every second digit, starting from right.
+    // if results in 2 digit number, add the digits to obtain single digit
+    // number. sum all answers to obtain 'double_even_sum'
+
+    for (int lpc = len - 2; lpc >= 0; lpc = lpc - 2) {
+        int dbl = ((cc_no_spaces[lpc] - '0') * 2);
+        if (dbl > 9) {
+            dbl = (dbl / 10) + (dbl % 10);
+        }
+        double_even_sum += dbl;
+    }
+
+    // Step 2: add every odd placed digit from right to double_even_sum's value
+
+    for (int lpc = len - 1; lpc >= 0; lpc = lpc - 2) {
+        double_even_sum += (cc_no_spaces[lpc] - 48);
+    }
+
+    // Step 3: check if final 'double_even_sum' is multiple of 10
+    // if yes, it is valid.
+
+    return double_even_sum % 10 == 0;
+}
-- 
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