# Buildsheet autogenerated by ravenadm tool -- Do not edit.

NAMEBASE=		autoselect-ruby
VERSION=		6
KEYWORDS=		lang
VARIANTS=		standard
SDESC[standard]=	Dynamic links to the latest installed ruby
HOMEPAGE=		none
CONTACT=		nobody

DOWNLOAD_GROUPS=	none
SPKGS[standard]=	single

OPTIONS_AVAILABLE=	none
OPTIONS_STANDARD=	none

LICENSE=		ISCL:single
LICENSE_FILE=		ISCL:{{FILESDIR}}/LICENSE_ISC
LICENSE_SCHEME=		solo

SUB_FILES=		autoselect.c
SUB_LIST=		ALPHA=33
			BRAVO=32
			CHARLIE=31

post-patch:
	@${MKDIR} ${WRKSRC}
	${CP} ${WRKDIR}/autoselect.c ${WRKSRC}

do-build:
	(cd ${WRKSRC} && ${CC} ${CFLAGS} ${LDFLAGS} -o generic autoselect.c)

do-install:
.for prog in ruby gem erb irb rdoc ri racc racc2y y2racc
	${INSTALL_PROGRAM} ${WRKSRC}/generic ${STAGEDIR}${PREFIX}/bin/${prog}
.endfor

[FILE:544:descriptions/desc.single]
This package provides:
  bin/ruby
  bin/gem
  bin/erb
  bin/irb
  bin/rdoc
  bin/ri

It automatically selects the latest version of ruby available.
For example, if ruby 2.3, 2.4, and 2.5 are all installed,
bin/ruby executes bin/ruby25 with the same arguments.  If
ruby 2.5 is then deinstalled, the linkage will automatically
adjust to ruby 2.4.  The ruby 2.3 binaries will only be
executed if no other ruby packages are installed.

The priority check can be overridden by setting AUTORUBY=<python version>
in the environment, e.g. AUTORUBY=24.


[FILE:58:manifests/plist.single]
bin/
 erb
 gem
 irb
 racc
 racc2y
 rdoc
 ri
 ruby
 y2racc


[FILE:747:files/LICENSE_ISC]
Copyright (c) 2018-2022, The Ravenports Project.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.


[FILE:2014:files/autoselect.c.in]
/*
 * This program will determine the latest version of ruby
 * installed by checking %%PREFIX%%/bin/ruby-<x> where <x> checks
 * all possible versions.
 * 
 * If no version is present, an error message will be displayed,
 * otherwise the versioned counterpart of the ruby command
 * requested will be will be executed with the same arguments
 * provided to this one.  If the versioned command isn't present, an
 * error message will be provided as a fallback.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>


int
main(int argc, char **argv)
{
	int x;
	char *cmd;
	char *override;
	char recommand[1024];
	char *rbver   = NULL;
	char *RUBY_A  = "%%PREFIX%%/bin/ruby%%ALPHA%%";
	char *RUBY_B  = "%%PREFIX%%/bin/ruby%%BRAVO%%";
	char *RUBY_C  = "%%PREFIX%%/bin/ruby%%CHARLIE%%";
	char *ALPHA   = "%%ALPHA%%";
	char *BRAVO   = "%%BRAVO%%";
	char *CHARLIE = "%%CHARLIE%%";

	override = getenv("AUTORUBY");
	if (override != NULL) {
		if (strcmp (override, ALPHA) == 0) {
			rbver = ALPHA;
		} else if (strcmp (override, BRAVO) == 0) {
			rbver = BRAVO;
		} else if (strcmp (override, CHARLIE) == 0) {
			rbver = CHARLIE;
		}
	}
	if (rbver == NULL) {
		if (access(RUBY_A, F_OK) != -1) {
			rbver = ALPHA;
		} else if (access(RUBY_B, F_OK) != -1) {
			rbver = BRAVO;
		} else if (access(RUBY_C, F_OK) != -1) {
			rbver = CHARLIE;
		} else {
			/* no versions of ruby are installed */
			printf ("There are no versions of ruby installed at %%PREFIX%%/bin\n");
			exit (1);
		}
	}

	/*
	 * Get the last path element of the program name being executed
	 */
	cmd = strrchr(argv[0], '/');
	if (cmd != NULL)
		cmd++;
	else
		cmd = argv[0];

	snprintf(recommand, 1024, "%%PREFIX%%/bin/%s%s", cmd, rbver);
	argv[0] = recommand;
	execv(recommand, argv);

	/*
	 * Execution failed, so write out an error message
	 */
	printf ("Command execution failed: %s\n", recommand);
	printf ("               arguments:");
	for (x = 1; x < argc; x++)
		printf (" %s", argv[x]);
	printf ("\n");
	exit (1);
}