common.c

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Author : Ran Benita
Date : 2016-02-27 19:06:14
Hash : a0a41332
Message : state: allow different modes for calculating consumed modifiers The current functions dealing with consumed modifiers use the traditional XKB definition of consumed modifiers (see description in the added documentation). However, for several users of the library (e.g. GTK) this definition is unsuitable or too eager. This is exacerbated by some less-than-ideal xkeyboard-config type definitions (CTRL+ALT seems to cause most grief...). So, because we - want to enable alternative interpretations, but - don't want to expose too much internal details, and - want to keep things simple for all library users, we add a high-level "mode" parameter which selects the desired interpretation. New ones can be added as long as they make some sense. All of the old consumed-modifiers functions keep using the traditional ("XKB") mode. I mark xkb_state_mod_mask_remove_consumed() and as deprecated without adding a *2 variant because I don't it is very useful (or used) in practice. Alternative modes are added in subsequent commits (this commit only adds a mode for the existing behavior). https://github.com/xkbcommon/libxkbcommon/issues/17 Signed-off-by: Ran Benita <ran234@gmail.com>
test/common.c
/*
 * Copyright © 2009 Dan Nicholson <dbn.lists@gmail.com>
 * Copyright © 2012 Intel Corporation
 * Copyright © 2012 Ran Benita <ran234@gmail.com>
 *
 * 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.
 *
 * Author: Dan Nicholson <dbn.lists@gmail.com>
 *         Daniel Stone <daniel@fooishbar.org>
 *         Ran Benita <ran234@gmail.com>
 */

#include <limits.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>

#include "test.h"

/*
 * Test a sequence of keysyms, resulting from a sequence of key presses,
 * against the keysyms they're supposed to generate.
 *
 * - Each test runs with a clean state.
 * - Each line in the test is made up of:
 *   + A keycode, given as a KEY_* from linux/input.h.
 *   + A direction - DOWN for press, UP for release, BOTH for
 *     immediate press + release, REPEAT to just get the syms.
 *   + A sequence of keysyms that should result from this keypress.
 *
 * The vararg format is:
 * <KEY_*>  <DOWN | UP | BOTH>  <XKB_KEY_* (zero or more)>  <NEXT | FINISH>
 *
 * See below for examples.
 */
int
test_key_seq_va(struct xkb_keymap *keymap, va_list ap)
{
    struct xkb_state *state;

    xkb_keycode_t kc;
    int op;
    xkb_keysym_t keysym;

    const xkb_keysym_t *syms;
    xkb_keysym_t sym;
    unsigned int nsyms, i;
    char ksbuf[64];

    fprintf(stderr, "----\n");

    state = xkb_state_new(keymap);
    assert(state);

    for (;;) {
        kc = va_arg(ap, int) + EVDEV_OFFSET;
        op = va_arg(ap, int);

        nsyms = xkb_state_key_get_syms(state, kc, &syms);
        if (nsyms == 1) {
            sym = xkb_state_key_get_one_sym(state, kc);
            syms = &sym;
        }

        fprintf(stderr, "got %u syms for keycode %u: [", nsyms, kc);

        if (op == DOWN || op == BOTH)
            xkb_state_update_key(state, kc, XKB_KEY_DOWN);
        if (op == UP || op == BOTH)
            xkb_state_update_key(state, kc, XKB_KEY_UP);

        for (i = 0; i < nsyms; i++) {
            keysym = va_arg(ap, int);
            xkb_keysym_get_name(syms[i], ksbuf, sizeof(ksbuf));
            fprintf(stderr, "%s%s", (i != 0) ? ", " : "", ksbuf);

            if (keysym == FINISH || keysym == NEXT) {
                xkb_keysym_get_name(syms[i], ksbuf, sizeof(ksbuf));
                fprintf(stderr, "Did not expect keysym: %s.\n", ksbuf);
                goto fail;
            }

            if (keysym != syms[i]) {
                xkb_keysym_get_name(keysym, ksbuf, sizeof(ksbuf));
                fprintf(stderr, "Expected keysym: %s. ", ksbuf);;
                xkb_keysym_get_name(syms[i], ksbuf, sizeof(ksbuf));
                fprintf(stderr, "Got keysym: %s.\n", ksbuf);;
                goto fail;
            }
        }

        if (nsyms == 0) {
            keysym = va_arg(ap, int);
            if (keysym != XKB_KEY_NoSymbol) {
                xkb_keysym_get_name(keysym, ksbuf, sizeof(ksbuf));
                fprintf(stderr, "Expected %s, but got no keysyms.\n", ksbuf);
                goto fail;
            }
        }

        fprintf(stderr, "]\n");

        keysym = va_arg(ap, int);
        if (keysym == NEXT)
            continue;
        if (keysym == FINISH)
            break;

        xkb_keysym_get_name(keysym, ksbuf, sizeof(ksbuf));
        fprintf(stderr, "Expected keysym: %s. Didn't get it.\n", ksbuf);
        goto fail;
    }

    xkb_state_unref(state);
    return 1;

fail:
    xkb_state_unref(state);
    return 0;
}

int
test_key_seq(struct xkb_keymap *keymap, ...)
{
    va_list ap;
    int ret;

    va_start(ap, keymap);
    ret = test_key_seq_va(keymap, ap);
    va_end(ap);

    return ret;
}

char *
test_get_path(const char *path_rel)
{
    char *path;
    size_t path_len;
    const char *srcdir = getenv("srcdir");

    path_len = strlen(srcdir ? srcdir : ".") +
               strlen(path_rel ? path_rel : "") + 12;
    path = malloc(path_len);
    if (!path) {
        fprintf(stderr, "Failed to allocate path (%d chars) for %s\n",
                (int) path_len, path);
        return NULL;
    }
    snprintf(path, path_len,
             "%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, *path;
    int fd, count, remaining;

    path = test_get_path(path_rel);
    if (!path)
        return NULL;

    fd = open(path, O_RDONLY);
    free(path);
    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(enum test_context_flags test_flags)
{
    enum xkb_context_flags ctx_flags;
    struct xkb_context *ctx;
    char *path;

    ctx_flags = XKB_CONTEXT_NO_DEFAULT_INCLUDES;
    if (test_flags & CONTEXT_ALLOW_ENVIRONMENT_NAMES) {
        unsetenv("XKB_DEFAULT_RULES");
        unsetenv("XKB_DEFAULT_MODEL");
        unsetenv("XKB_DEFAULT_LAYOUT");
        unsetenv("XKB_DEFAULT_VARIANT");
        unsetenv("XKB_DEFAULT_OPTIONS");
    }
    else {
        ctx_flags |= XKB_CONTEXT_NO_ENVIRONMENT_NAMES;
    }

    ctx = xkb_context_new(ctx_flags);
    if (!ctx)
        return NULL;

    path = test_get_path("");
    if (!path)
        return NULL;

    xkb_context_include_path_append(ctx, path);
    free(path);

    return ctx;
}

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

    path = test_get_path(path_rel);
    if (!path)
        return NULL;

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

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

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

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

    return keymap;
}

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

    keymap = xkb_keymap_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_buffer(struct xkb_context *context, const char *buf, size_t len)
{
    struct xkb_keymap *keymap;

    keymap = xkb_keymap_new_from_buffer(context, buf, len,
                                        XKB_KEYMAP_FORMAT_TEXT_V1, 0);
    if (!keymap) {
        fprintf(stderr, "Failed to compile keymap from memory buffer\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 = isempty(rules) ? NULL : rules,
        .model = isempty(model) ? NULL : model,
        .layout = isempty(layout) ? NULL : layout,
        .variant = isempty(variant) ? NULL : variant,
        .options = isempty(options) ? NULL : options
    };

    if (!rules && !model && !layout && !variant && !options)
        keymap = xkb_keymap_new_from_names(context, NULL, 0);
    else
        keymap = xkb_keymap_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;
}

void
test_print_keycode_state(struct xkb_state *state,
                         struct xkb_compose_state *compose_state,
                         xkb_keycode_t keycode,
                         enum xkb_consumed_mode consumed_mode)
{
    struct xkb_keymap *keymap;

    xkb_keysym_t sym;
    const xkb_keysym_t *syms;
    int nsyms;
    char s[16];
    xkb_layout_index_t layout;
    enum xkb_compose_status status;

    keymap = xkb_state_get_keymap(state);

    nsyms = xkb_state_key_get_syms(state, keycode, &syms);

    if (nsyms <= 0)
        return;

    status = XKB_COMPOSE_NOTHING;
    if (compose_state)
        status = xkb_compose_state_get_status(compose_state);

    if (status == XKB_COMPOSE_COMPOSING || status == XKB_COMPOSE_CANCELLED)
        return;

    if (status == XKB_COMPOSE_COMPOSED) {
        sym = xkb_compose_state_get_one_sym(compose_state);
        syms = &sym;
        nsyms = 1;
    }
    else if (nsyms == 1) {
        sym = xkb_state_key_get_one_sym(state, keycode);
        syms = &sym;
    }

    printf("keysyms [ ");
    for (int i = 0; i < nsyms; i++) {
        xkb_keysym_get_name(syms[i], s, sizeof(s));
        printf("%-*s ", (int) sizeof(s), s);
    }
    printf("] ");

    if (status == XKB_COMPOSE_COMPOSED)
        xkb_compose_state_get_utf8(compose_state, s, sizeof(s));
    else
        xkb_state_key_get_utf8(state, keycode, s, sizeof(s));
    printf("unicode [ %s ] ", s);

    layout = xkb_state_key_get_layout(state, keycode);
    printf("layout [ %s (%d) ] ",
           xkb_keymap_layout_get_name(keymap, layout), layout);

    printf("level [ %d ] ",
           xkb_state_key_get_level(state, keycode, layout));

    printf("mods [ ");
    for (xkb_mod_index_t mod = 0; mod < xkb_keymap_num_mods(keymap); mod++) {
        if (xkb_state_mod_index_is_active(state, mod,
                                          XKB_STATE_MODS_EFFECTIVE) <= 0)
            continue;
        if (xkb_state_mod_index_is_consumed2(state, keycode, mod,
                                             consumed_mode))
            printf("-%s ", xkb_keymap_mod_get_name(keymap, mod));
        else
            printf("%s ", xkb_keymap_mod_get_name(keymap, mod));
    }
    printf("] ");

    printf("leds [ ");
    for (xkb_led_index_t led = 0; led < xkb_keymap_num_leds(keymap); led++) {
        if (xkb_state_led_index_is_active(state, led) <= 0)
            continue;
        printf("%s ", xkb_keymap_led_get_name(keymap, led));
    }
    printf("] ");

    printf("\n");
}

void
test_print_state_changes(enum xkb_state_component changed)
{
    if (changed == 0)
        return;

    printf("changed [ ");
    if (changed & XKB_STATE_LAYOUT_EFFECTIVE)
        printf("effective-layout ");
    if (changed & XKB_STATE_LAYOUT_DEPRESSED)
        printf("depressed-layout ");
    if (changed & XKB_STATE_LAYOUT_LATCHED)
        printf("latched-layout ");
    if (changed & XKB_STATE_LAYOUT_LOCKED)
        printf("locked-layout ");
    if (changed & XKB_STATE_MODS_EFFECTIVE)
        printf("effective-mods ");
    if (changed & XKB_STATE_MODS_DEPRESSED)
        printf("depressed-mods ");
    if (changed & XKB_STATE_MODS_LATCHED)
        printf("latched-mods ");
    if (changed & XKB_STATE_MODS_LOCKED)
        printf("locked-mods ");
    if (changed & XKB_STATE_LEDS)
        printf("leds ");
    printf("]\n");
}

void
test_disable_stdin_echo(void)
{
    /* Same as `stty -echo`. */
    struct termios termios;
    if (tcgetattr(STDIN_FILENO, &termios) == 0) {
        termios.c_lflag &= ~ECHO;
        (void) tcsetattr(STDIN_FILENO, TCSADRAIN, &termios);
    }
}

void
test_enable_stdin_echo(void)
{
    /* Same as `stty echo`. */
    struct termios termios;
    if (tcgetattr(STDIN_FILENO, &termios) == 0) {
        termios.c_lflag |= ECHO;
        (void) tcsetattr(STDIN_FILENO, TCSADRAIN, &termios);
    }
}
kc3-lang/libxkbcommon/test/common.c

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kc3-lang/libxkbcommon /test/common.c
