src/jdk.jpackage/windows/native/libjpackage/tstrings.cpp
branchJDK-8200758-branch
changeset 57413 45c74e654794
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jpackage/windows/native/libjpackage/tstrings.cpp	Mon Jun 17 15:38:04 2019 -0400
@@ -0,0 +1,280 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdexcept>
+#include <algorithm>
+
+#include "tstrings.h"
+#include "ErrorHandling.h"
+
+
+namespace tstrings {
+
+/* Create formatted string
+ */
+tstring unsafe_format(tstring::const_pointer format, ...) {
+    if (!format) {
+        throw std::invalid_argument("Destination buffer can't be NULL");
+    }
+
+    tstring fmtout;
+    int ret;
+    const int inc = 256;
+
+    va_list args;
+    va_start(args, format);
+    do {
+        fmtout.resize(fmtout.size() + inc);
+#ifdef _MSC_VER
+        ret = _vsntprintf_s(&*fmtout.begin(), fmtout.size(), _TRUNCATE, format, args);
+#else
+        // With g++ this compiles only with '-std=gnu++0x' option
+        ret = vsnprintf(&*fmtout.begin(), fmtout.size(), format, args);
+#endif
+    } while(-1 == ret);
+    va_end(args);
+
+    //update string size by actual value
+    fmtout.resize(ret);
+
+    return fmtout;
+}
+
+/*
+ * Tests if two strings are equal according to CompareType.
+ *
+ * a - string to compare
+ * b - string to compare
+ * ct - CASE_SENSITIVE: case sensitive comparing type
+ *      IGNORE_CASE: case insensitive comparing type
+ */
+bool equals(const tstring& a, const tstring& b, const CompareType ct) {
+    if (IGNORE_CASE==ct) {
+        return toLower(a) == toLower(b);
+    }
+    return a == b;
+}
+
+bool startsWith(const tstring &str, const tstring &substr, const CompareType ct)
+{
+    if (str.size() < substr.size()) {
+        return false;
+    }
+    const tstring startOfStr = str.substr(0, substr.size());
+    return tstrings::equals(startOfStr, substr, ct);
+}
+
+bool endsWith(const tstring &str, const tstring &substr, const CompareType ct)
+{
+    if (str.size() < substr.size()) {
+        return false;
+    }
+    const tstring endOfStr = str.substr(str.size() - substr.size());
+    return tstrings::equals(endOfStr, substr, ct);
+}
+
+/*
+ * Split string into a vector with given delimiter string
+ *
+ * strVector - string vector to store split tstring
+ * str - string to split
+ * delimiter - delimiter to split the string around
+ * st - ST_ALL: return value includes an empty string
+ *      ST_EXCEPT_EMPTY_STRING: return value does not include an empty string
+ *
+ * Note: It does not support multiple delimiters
+ */
+void split(tstring_array &strVector, const tstring &str,
+          const tstring &delimiter, const SplitType st) {
+    tstring::size_type start = 0, end = 0, length = str.length();
+
+    if (length == 0 || delimiter.length() == 0) {
+        return;
+    }
+
+    end = str.find(delimiter, start);
+    while(end != tstring::npos) {
+        if(st == ST_ALL || end - start > 1 ) {
+            strVector.push_back(str.substr(start, end == tstring::npos ?
+                                                  tstring::npos : end - start));
+        }
+        start = end > (tstring::npos - delimiter.size()) ?
+                tstring::npos : end + delimiter.size();
+        end = str.find(delimiter, start);
+    }
+
+    if(st == ST_ALL || start < length) {
+        strVector.push_back(str.substr(start, length - start));
+    }
+}
+
+/*
+ * Convert uppercase letters to lowercase
+ */
+tstring toLower(const tstring& str) {
+    tstring lower(str);
+    tstring::iterator ok = std::transform(lower.begin(), lower.end(),
+                                          lower.begin(), tolower);
+    if (ok!=lower.end()) {
+        lower.resize(0);
+    }
+    return lower;
+}
+
+
+/*
+ * Replace all substring occurrences in a tstring.
+ * If 'str' or 'search' is empty the function returns 'str'.
+ * The given 'str' remains unchanged in any case.
+ * The function returns changed copy of 'str'.
+ */
+tstring replace(const tstring &str, const tstring &search, const tstring &replace)
+{
+    if (search.empty()) {
+        return str;
+    }
+
+    tstring s(str);
+
+    for (size_t pos = 0; ; pos += replace.length()) {
+        pos = s.find(search, pos);
+        if (pos == tstring::npos) {
+            break;
+        }
+        s.erase(pos, search.length());
+        s.insert(pos, replace);
+    }
+    return s;
+}
+
+
+/*
+ * Remove trailing spaces
+ */
+
+tstring trim(const tstring& str, const tstring& whitespace) {
+    const size_t strBegin = str.find_first_not_of(whitespace);
+    if (strBegin == std::string::npos) {
+        return tstring(); // no content
+    }
+
+    const size_t  strEnd = str.find_last_not_of(whitespace);
+    const size_t strRange = strEnd - strBegin + 1;
+
+    return str.substr(strBegin, strRange);
+}
+
+} // namespace tstrings
+
+
+#ifdef TSTRINGS_WITH_WCHAR
+namespace tstrings {
+
+namespace {
+/*
+ * Converts UTF16-encoded string into multi-byte string of the given encoding.
+ */
+std::string toMultiByte(const std::wstring& utf16str, int encoding) {
+    std::string reply;
+    do {
+        int cm = WideCharToMultiByte(encoding,
+                                    0,
+                                    utf16str.c_str(),
+                                    int(utf16str.size()),
+                                    NULL,
+                                    0,
+                                    NULL,
+                                    NULL);
+        if (cm < 0) {
+            JP_THROW("Unexpected reply from WideCharToMultiByte()");
+        }
+        if (0 == cm) {
+            break;
+        }
+
+        reply.resize(cm);
+        int cm2 = WideCharToMultiByte(encoding,
+                                    0,
+                                    utf16str.c_str(),
+                                    int(utf16str.size()),
+                                    &*reply.begin(),
+                                    cm,
+                                    NULL,
+                                    NULL);
+        if (cm != cm2) {
+            JP_THROW("Unexpected reply from WideCharToMultiByte()");
+        }
+    } while(0);
+
+    return reply;
+}
+
+/*
+ * Converts multi-byte string of the given encoding into UTF16-encoded string.
+ */
+std::wstring fromMultiByte(const std::string& str, int encoding) {
+    std::wstring utf16;
+    do {
+        int cw = MultiByteToWideChar(encoding,
+                                    MB_ERR_INVALID_CHARS,
+                                    str.c_str(),
+                                    int(str.size()),
+                                    NULL,
+                                    0);
+        if (cw < 0) {
+            JP_THROW("Unexpected reply from MultiByteToWideChar()");
+        }
+        if (0 == cw) {
+            break;
+        }
+
+        utf16.resize(cw);
+        int cw2 = MultiByteToWideChar(encoding,
+                                    MB_ERR_INVALID_CHARS,
+                                    str.c_str(),
+                                    int(str.size()),
+                                    &*utf16.begin(),
+                                    cw);
+        if (cw != cw2) {
+            JP_THROW("Unexpected reply from MultiByteToWideChar()");
+        }
+    } while(0);
+
+    return utf16;
+}
+} // namespace
+
+std::string toUtf8(const std::wstring& utf16str) {
+    return toMultiByte(utf16str, CP_UTF8);
+}
+
+std::wstring toUtf16(const std::string& utf8str) {
+    return fromMultiByte(utf8str, CP_UTF8);
+}
+
+} // namespace tstrings
+#endif // ifdef TSTRINGS_WITH_WCHAR