102 lines
1.6 KiB
D
102 lines
1.6 KiB
D
module util;
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import std.stdio : File;
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public @safe:
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File stderr;
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private {
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string[] mainArgs;
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version (OpenBSD) {
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immutable(char) *promises;
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}
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}
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/++
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+ Common initialisation function shared between esv and esvsearch
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+/
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void
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sharedInit(string[] args)
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{
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mainArgs = args;
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stderr = File("/dev/stderr", "w");
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version (OpenBSD) () @trusted {
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import core.sys.openbsd.unistd : pledge;
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import std.string : toStringz;
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promises = toStringz("stdio rpath wpath cpath inet dns tty proc exec prot_exec");
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pledge(promises, null);
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}();
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}
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void
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enforceDie(A...)(bool cond, string fmt, A a)
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{
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import std.format : format;
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if (!cond)
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die(format(fmt, a));
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}
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void
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handleOptError(in string msg)
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{
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import std.algorithm : startsWith;
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import std.regex : matchFirst;
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string opt = msg.matchFirst("-.")[0];
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enforceDie(!msg.startsWith("Unrecognized option"),
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"unknown option " ~ opt);
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enforceDie(!msg.startsWith("Missing value for argument"),
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"missing argument for option " ~ opt);
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die(msg); /* catch-all */
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}
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string
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parseBook(in string book)
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{
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import std.string : tr;
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return book.tr("-_", " ");
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}
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@safe unittest
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{
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assert(parseBook("1-Corinthians") == "1 Corinthians");
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assert(parseBook("1_Corinthians") == "1 Corinthians");
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}
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ushort
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terminalColumns() @trusted
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{
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import core.sys.posix.sys.ioctl;
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winsize w;
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ioctl(1, TIOCGWINSZ, &w);
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return w.ws_col > 72 ? 72 : w.ws_col;
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}
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void
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warn(string mesg)
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{
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import std.path : baseName;
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stderr.writeln(baseName(mainArgs[0]) ~ ": " ~ mesg);
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}
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void
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die(string mesg) @trusted
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{
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import core.runtime : Runtime;
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import core.stdc.stdlib : exit;
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warn(mesg);
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Runtime.terminate();
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exit(1);
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}
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