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Revision 55672a39b4e0f82e6f997879724ea37ca7e0d765 authored by Junio C Hamano on 09 May 2016, 18:36:09 UTC, committed by Junio C Hamano on 09 May 2016, 19:32:42 UTC 
test-lib-functions.sh: remove misleading comment on test_seq
 
We never used the "letters" form since we came up with "test_seq" to
replace use of non-portable "seq" in our test script, which we
introduced it at d17cf5f3 (tests: Introduce test_seq, 2012-08-04).

We use this helper to either iterate for N times (i.e. the values on
the lines do not even matter), or just to get N distinct strings
(i.e. the values on the lines themselves do not really matter, but
we care that they are different from each other and reproducible).

Stop promising that we may allow using "letters"; this would open an
easier reimplementation that does not rely on $PERL, if somebody
later wants to.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 7654286
Raw File
var.c 
/*
 * GIT - The information manager from hell
 *
 * Copyright (C) Eric Biederman, 2005
 */
#include "builtin.h"

static const char var_usage[] = "git var (-l | <variable>)";

static const char *editor(int flag)
{
	const char *pgm = git_editor();

	if (!pgm && flag & IDENT_STRICT)
		die("Terminal is dumb, but EDITOR unset");

	return pgm;
}

static const char *pager(int flag)
{
	const char *pgm = git_pager(1);

	if (!pgm)
		pgm = "cat";
	return pgm;
}

struct git_var {
	const char *name;
	const char *(*read)(int);
};
static struct git_var git_vars[] = {
	{ "GIT_COMMITTER_IDENT", git_committer_info },
	{ "GIT_AUTHOR_IDENT",   git_author_info },
	{ "GIT_EDITOR", editor },
	{ "GIT_PAGER", pager },
	{ "", NULL },
};

static void list_vars(void)
{
	struct git_var *ptr;
	const char *val;

	for (ptr = git_vars; ptr->read; ptr++)
		if ((val = ptr->read(0)))
			printf("%s=%s\n", ptr->name, val);
}

static const char *read_var(const char *var)
{
	struct git_var *ptr;
	const char *val;
	val = NULL;
	for (ptr = git_vars; ptr->read; ptr++) {
		if (strcmp(var, ptr->name) == 0) {
			val = ptr->read(IDENT_STRICT);
			break;
		}
	}
	return val;
}

static int show_config(const char *var, const char *value, void *cb)
{
	if (value)
		printf("%s=%s\n", var, value);
	else
		printf("%s\n", var);
	return git_default_config(var, value, cb);
}

int cmd_var(int argc, const char **argv, const char *prefix)
{
	const char *val = NULL;
	if (argc != 2)
		usage(var_usage);

	if (strcmp(argv[1], "-l") == 0) {
		git_config(show_config, NULL);
		list_vars();
		return 0;
	}
	git_config(git_default_config, NULL);
	val = read_var(argv[1]);
	if (!val)
		usage(var_usage);

	printf("%s\n", val);

	return 0;
}
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