1 files changed, 217 insertions, 0 deletions
diff --git a/src/common/str-utils.cpp b/src/common/str-utils.cpp
new file mode 100644
index 0000000..245e31e
--- /dev/null
+++ b/src/common/str-utils.cpp
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2017 [Ribose Inc](https://www.ribose.com).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ * 2.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+/** String utilities
+ *  @file
+ */
+
+#include <cstddef>
+#include <cstring>
+#include <cctype>
+#include <stdexcept>
+#include "str-utils.h"
+#ifdef _WIN32
+#include <locale>
+#include <codecvt>
+#endif
+
+using std::size_t;
+using std::strlen;
+
+namespace rnp {
+char *
+strip_eol(char *s)
+{
+    size_t len = strlen(s);
+
+    while ((len > 0) && ((s[len - 1] == '\n') || (s[len - 1] == '\r'))) {
+        s[--len] = '\0';
+    }
+
+    return s;
+}
+
+bool
+strip_eol(std::string &s)
+{
+    size_t len = s.size();
+    while (len && ((s[len - 1] == '\n') || (s[len - 1] == '\r'))) {
+        len--;
+    }
+    if (len == s.size()) {
+        return false;
+    }
+    s.resize(len);
+    return true;
+}
+
+bool
+is_blank_line(const char *line, size_t len)
+{
+    for (size_t i = 0; i < len && line[i]; i++) {
+        if (line[i] != ' ' && line[i] != '\t' && line[i] != '\r') {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool
+str_case_eq(const char *s1, const char *s2)
+{
+    while (*s1 && *s2) {
+        if (std::tolower(*s1) != std::tolower(*s2)) {
+            return false;
+        }
+        s1++;
+        s2++;
+    }
+    return !*s1 && !*s2;
+}
+
+bool
+str_case_eq(const std::string &s1, const std::string &s2)
+{
+    if (s1.size() != s2.size()) {
+        return false;
+    }
+    return str_case_eq(s1.c_str(), s2.c_str());
+}
+
+static size_t
+hex_prefix_len(const std::string &str)
+{
+    if ((str.length() >= 2) && (str[0] == '0') && ((str[1] == 'x') || (str[1] == 'X'))) {
+        return 2;
+    }
+    return 0;
+}
+
+bool
+is_hex(const std::string &s)
+{
+    for (size_t i = hex_prefix_len(s); i < s.length(); i++) {
+        auto &ch = s[i];
+        if ((ch >= '0') && (ch <= '9')) {
+            continue;
+        }
+        if ((ch >= 'a') && (ch <= 'f')) {
+            continue;
+        }
+        if ((ch >= 'A') && (ch <= 'F')) {
+            continue;
+        }
+        if ((ch == ' ') || (ch == '\t')) {
+            continue;
+        }
+        return false;
+    }
+    return true;
+}
+
+std::string
+strip_hex(const std::string &s)
+{
+    std::string res = "";
+    for (size_t idx = hex_prefix_len(s); idx < s.length(); idx++) {
+        auto ch = s[idx];
+        if ((ch == ' ') || (ch == '\t')) {
+            continue;
+        }
+        res.push_back(ch);
+    }
+    return res;
+}
+
+char *
+lowercase(char *s)
+{
+    if (!s) {
+        return s;
+    }
+    for (char *ptr = s; *ptr; ++ptr) {
+        *ptr = tolower(*ptr);
+    }
+    return s;
+}
+
+bool
+str_to_int(const std::string &s, int &val)
+{
+    for (const char &ch : s) {
+        if ((ch < '0') || (ch > '9')) {
+            return false;
+        }
+    }
+    try {
+        val = std::stoi(s);
+    } catch (std::out_of_range const &ex) {
+        return false;
+    }
+    return true;
+}
+
+bool
+is_slash(char c)
+{
+    return (c == '/') || (c == '\\');
+}
+
+} // namespace rnp
+
+#ifdef _WIN32
+std::wstring
+wstr_from_utf8(const char *s)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t>> utf8conv;
+    return utf8conv.from_bytes(s);
+}
+
+std::wstring
+wstr_from_utf8(const char *first, const char *last)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t>> utf8conv;
+    return utf8conv.from_bytes(first, last);
+}
+
+std::wstring
+wstr_from_utf8(const std::string &s)
+{
+    return wstr_from_utf8(s.c_str());
+}
+
+std::string
+wstr_to_utf8(const wchar_t *ws)
+{
+    std::wstring_convert<std::codecvt_utf8<wchar_t>> utf8conv;
+    return utf8conv.to_bytes(ws);
+}
+
+std::string
+wstr_to_utf8(const std::wstring &ws)
+{
+    return wstr_to_utf8(ws.c_str());
+}
+#endif