/*
Copyright 2009 Dan Nicholson
Copyright © 2012 Daniel Stone
Copyright © 2012 Ran Benita

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the names of the authors or their
institutions shall not be used in advertising or otherwise to promote the
sale, use or other dealings in this Software without prior written
authorization from the authors.
*/

#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "xkbcommon/xkbcommon.h"
#include "test.h"

const char *
test_get_path(const char *path_rel)
{
    static char path[PATH_MAX];
    const char *srcdir = getenv("srcdir");

    snprintf(path, PATH_MAX - 1,
             "%s/test/data/%s", srcdir ? srcdir : ".",
             path_rel ? path_rel : "");

    return path;
}

char *
test_read_file(const char *path_rel)
{
    struct stat info;
    char *ret, *tmp;
    int fd, count, remaining;

    fd = open(test_get_path(path_rel), O_RDONLY);
    if (fd < 0)
        return NULL;

    if (fstat(fd, &info) != 0) {
        close(fd);
        return NULL;
    }

    ret = malloc(info.st_size + 1);
    if (!ret) {
        close(fd);
        return NULL;
    }

    remaining = info.st_size;
    tmp = ret;
    while ((count = read(fd, tmp, remaining))) {
        remaining -= count;
        tmp += count;
    }
    ret[info.st_size] = '\0';
    close(fd);

    if (remaining != 0) {
        free(ret);
        return NULL;
    }

    return ret;
}

struct xkb_context *
test_get_context(void)
{
    struct xkb_context *ctx = xkb_context_new(XKB_CONTEXT_NO_DEFAULT_INCLUDES);

    if (!ctx)
        return NULL;

    xkb_context_include_path_append(ctx, test_get_path(""));

    return ctx;
}

struct xkb_keymap *
test_compile_file(struct xkb_context *context, const char *path_rel)
{
    struct xkb_keymap *keymap;
    FILE *file;
    const char *path = test_get_path(path_rel);

    file = fopen(path, "r");
    if (!file) {
        fprintf(stderr, "Failed to open path: %s\n", path);
        return NULL;
    }
    assert(file != NULL);

    keymap = xkb_map_new_from_file(context, file,
                                   XKB_KEYMAP_FORMAT_TEXT_V1, 0);
    fclose(file);

    if (!keymap) {
        fprintf(stderr, "Failed to compile path: %s\n", path);
        return NULL;
    }

    fprintf(stderr, "Successfully compiled path: %s\n", path);

    return keymap;
}

struct xkb_keymap *
test_compile_string(struct xkb_context *context, const char *string)
{
    struct xkb_keymap *keymap;

    keymap = xkb_map_new_from_string(context, string,
                                     XKB_KEYMAP_FORMAT_TEXT_V1, 0);
    if (!keymap) {
        fprintf(stderr, "Failed to compile string\n");
        return NULL;
    }

    return keymap;
}

struct xkb_keymap *
test_compile_rules(struct xkb_context *context, const char *rules,
                   const char *model, const char *layout,
                   const char *variant, const char *options)
{
    struct xkb_keymap *keymap;
    struct xkb_rule_names rmlvo = {
        .rules = rules,
        .model = model,
        .layout = layout,
        .variant = variant,
        .options = options
    };

    keymap = xkb_map_new_from_names(context, &rmlvo, 0);
    if (!keymap) {
        fprintf(stderr,
                "Failed to compile RMLVO: '%s', '%s', '%s', '%s', '%s'\n",
                rules, model, layout, variant, options);
        return NULL;
    }

    return keymap;
}