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/*
 * test-run-command.c: test run command API.
 *
 * (C) 2009 Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
 *
 * This code is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include "git-compat-util.h"
#include "run-command.h"
#include "argv-array.h"
#include "strbuf.h"
#include <string.h>
#include <errno.h>

static int number_callbacks;
static int parallel_next(struct child_process *cp,
			 struct strbuf *err,
			 void *cb,
			 void **task_cb)
{
	struct child_process *d = cb;
	if (number_callbacks >= 4)
		return 0;

	argv_array_pushv(&cp->args, d->argv);
	strbuf_addstr(err, "preloaded output of a child\n");
	number_callbacks++;
	return 1;
}

static int no_job(struct child_process *cp,
		  struct strbuf *err,
		  void *cb,
		  void **task_cb)
{
	strbuf_addstr(err, "no further jobs available\n");
	return 0;
}

static int task_finished(int result,
			 struct strbuf *err,
			 void *pp_cb,
			 void *pp_task_cb)
{
	strbuf_addstr(err, "asking for a quick stop\n");
	return 1;
}

int cmd_main(int argc, const char **argv)
{
	struct child_process proc = CHILD_PROCESS_INIT;
	int jobs;

	if (argc < 3)
		return 1;
	proc.argv = (const char **)argv + 2;

	if (!strcmp(argv[1], "start-command-ENOENT")) {
		if (start_command(&proc) < 0 && errno == ENOENT)
			return 0;
		fprintf(stderr, "FAIL %s\n", argv[1]);
		return 1;
	}
	if (!strcmp(argv[1], "run-command"))
		exit(run_command(&proc));

	jobs = atoi(argv[2]);
	proc.argv = (const char **)argv + 3;

	if (!strcmp(argv[1], "run-command-parallel"))
		exit(run_processes_parallel(jobs, parallel_next,
					    NULL, NULL, &proc));

	if (!strcmp(argv[1], "run-command-abort"))
		exit(run_processes_parallel(jobs, parallel_next,
					    NULL, task_finished, &proc));

	if (!strcmp(argv[1], "run-command-no-jobs"))
		exit(run_processes_parallel(jobs, no_job,
					    NULL, task_finished, &proc));

	fprintf(stderr, "check usage\n");
	return 1;
}
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