91 lines
2.5 KiB
D
91 lines
2.5 KiB
D
/*
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* Copyright 2012, 2014 Vladimir Panteleev <vladimir@thecybershadow.net>
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* This file is part of RABCDAsm.
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*
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* RABCDAsm is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RABCDAsm is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RABCDAsm. If not, see <http://www.gnu.org/licenses/>.
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*/
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module common;
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import std.array;
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import std.path;
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import std.stdio;
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import std.string;
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string longPath(string s)
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{
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version(Windows)
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{
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if (s.startsWith(`\\`))
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return s;
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else
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return `\\?\` ~ s.absolutePath().buildNormalizedPath().replace(`/`, `\`);
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}
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else
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return s;
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}
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File openFile(string fn, string mode)
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{
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File f;
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static if (is(typeof(&f.windowsHandleOpen)))
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{
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import core.sys.windows.windows;
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import std.exception;
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import std.utf;
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import std.windows.syserror;
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string winMode;
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foreach (c; mode)
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switch (c)
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{
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case 'r':
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case 'w':
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case 'a':
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case '+':
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winMode ~= c;
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break;
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case 'b':
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case 't':
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break;
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default:
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assert(false, "Unknown character in mode");
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}
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DWORD access, creation;
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bool append;
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switch (winMode)
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{
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case "r" : access = GENERIC_READ ; creation = OPEN_EXISTING; break;
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case "r+": access = GENERIC_READ | GENERIC_WRITE; creation = OPEN_EXISTING; break;
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case "w" : access = GENERIC_WRITE; creation = OPEN_ALWAYS ; break;
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case "w+": access = GENERIC_READ | GENERIC_WRITE; creation = OPEN_ALWAYS ; break;
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case "a" : access = GENERIC_WRITE; creation = OPEN_ALWAYS ; append = true; break;
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case "a+": assert(false, "Not implemented"); // requires two file pointers
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default: assert(false, "Bad file mode: " ~ mode);
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}
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auto pathW = toUTF16z(longPath(fn));
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auto h = CreateFileW(pathW, access, FILE_SHARE_READ, null, creation, 0, HANDLE.init);
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enforce(h != INVALID_HANDLE_VALUE, "Failed to open file \"" ~ fn ~ "\": " ~ sysErrorString(GetLastError()));
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assert(!append, "'a' mode not implemented");
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f.windowsHandleOpen(h, mode);
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}
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else
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f.open(fn, mode);
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return f;
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}
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