terminal: drop unfinished code

This drops the libsystemd-terminal and systemd-consoled code for various
reasons:

 * It's been sitting there unfinished for over a year now and won't get
   finished any time soon.

 * Since its initial creation, several parts need significant rework: The
   input handling should be replaced with the now commonly used libinput,
   the drm accessors should coordinate the handling of mode-object
   hotplugging (including split connectors) with other DRM users, and the
   internal library users should be converted to sd-device and friends.

 * There is still significant kernel work required before sd-console is
   really useful. This includes, but is not limited to, simpledrm and
   drmlog.

 * The authority daemon is needed before all this code can be used for
   real. And this will definitely take a lot more time to get done as
   no-one else is currently working on this, but me.

 * kdbus maintenance has taken up way more time than I thought and it has
   much higher priority. I don't see me spending much time on the
   terminal code in the near future.

If anyone intends to hack on this, please feel free to contact me. I'll
gladly help you out with any issues. Once kdbus and authorityd are
finished (whenever that will be..) I'll definitely pick this up again. But
until then, lets reduce compile times and maintenance efforts on this code
and drop it for now.

1 files changed, 0 insertions, 238 deletions

diff --git a/src/libsystemd-terminal/unifont.c b/src/libsystemd-terminal/unifont.c
deleted file mode 100644
index 0da81e8ff2..0000000000
--- a/src/libsystemd-terminal/unifont.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-/*
- * Unifont
- * This implements the unifont glyph-array parser and provides it via a simple
- * API to the caller. No heavy transformations are performed so glyph-lookups
- * stay as fast as possible.
- */
-
-#include <endian.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include "macro.h"
-#include "unifont-def.h"
-#include "unifont.h"
-#include "util.h"
-
-struct unifont {
-        unsigned long ref;
-
-        int fd;
-        const uint8_t *map;
-        size_t size;
-
-        unifont_header header;
-        const void *glyphs;     /* unaligned! */
-        size_t n_glyphs;
-        size_t glyphsize;
-};
-
-static int unifont_fetch_header(unifont *u) {
-        unifont_header h = { };
-        uint64_t glyphsize;
-
-        if (u->size < UNIFONT_HEADER_SIZE_MIN)
-                return -EBFONT;
-
-        assert_cc(sizeof(h) >= UNIFONT_HEADER_SIZE_MIN);
-        memcpy(&h, u->map, UNIFONT_HEADER_SIZE_MIN);
-
-        h.compatible_flags = le32toh(h.compatible_flags);
-        h.incompatible_flags = le32toh(h.incompatible_flags);
-        h.header_size = le32toh(h.header_size);
-        h.glyph_header_size = le16toh(h.glyph_header_size);
-        h.glyph_stride = le16toh(h.glyph_stride);
-        h.glyph_body_size = le64toh(h.glyph_body_size);
-
-        if (memcmp(h.signature, "DVDHRMUF", 8))
-                return -EBFONT;
-        if (h.incompatible_flags != 0)
-                return -EBFONT;
-        if (h.header_size < UNIFONT_HEADER_SIZE_MIN || h.header_size > u->size)
-                return -EBFONT;
-        if (h.glyph_header_size + h.glyph_body_size < h.glyph_header_size)
-                return -EBFONT;
-        if (h.glyph_stride * 16ULL > h.glyph_body_size)
-                return -EBFONT;
-
-        glyphsize = h.glyph_header_size + h.glyph_body_size;
-
-        if (glyphsize == 0 || glyphsize > u->size - h.header_size) {
-                u->n_glyphs = 0;
-        } else {
-                u->glyphs = u->map + h.header_size;
-                u->n_glyphs = (u->size - h.header_size) / glyphsize;
-                u->glyphsize = glyphsize;
-        }
-
-        memcpy(&u->header, &h, sizeof(h));
-        return 0;
-}
-
-static int unifont_fetch_glyph(unifont *u, unifont_glyph_header *out_header, const void **out_body, uint32_t ucs4) {
-        unifont_glyph_header glyph_header = { };
-        const void *glyph_body = NULL;
-        const uint8_t *p;
-
-        if (ucs4 >= u->n_glyphs)
-                return -ENOENT;
-
-        p = u->glyphs;
-
-        /* copy glyph-header data */
-        p += ucs4 * u->glyphsize;
-        memcpy(&glyph_header, p, MIN(sizeof(glyph_header), u->header.glyph_header_size));
-
-        /* copy glyph-body pointer */
-        p += u->header.glyph_header_size;
-        glyph_body = p;
-
-        if (glyph_header.width < 1)
-                return -ENOENT;
-        if (glyph_header.width > u->header.glyph_stride)
-                return -EBFONT;
-
-        memcpy(out_header, &glyph_header, sizeof(glyph_header));
-        *out_body = glyph_body;
-        return 0;
-}
-
-int unifont_new(unifont **out) {
-        _cleanup_(unifont_unrefp) unifont *u = NULL;
-        struct stat st;
-        int r;
-
-        assert_return(out, -EINVAL);
-
-        u = new0(unifont, 1);
-        if (!u)
-                return -ENOMEM;
-
-        u->ref = 1;
-        u->fd = -1;
-        u->map = MAP_FAILED;
-
-        u->fd = open(UNIFONT_PATH, O_RDONLY | O_CLOEXEC | O_NOCTTY);
-        if (u->fd < 0)
-                return -errno;
-
-        r = fstat(u->fd, &st);
-        if (r < 0)
-                return -errno;
-
-        u->size = st.st_size;
-        u->map = mmap(NULL, u->size, PROT_READ, MAP_PRIVATE, u->fd, 0);
-        if (u->map == MAP_FAILED)
-                return -errno;
-
-        r = unifont_fetch_header(u);
-        if (r < 0)
-                return r;
-
-        *out = u;
-        u = NULL;
-        return 0;
-}
-
-unifont *unifont_ref(unifont *u) {
-        if (!u || !u->ref)
-                return NULL;
-
-        ++u->ref;
-
-        return u;
-}
-
-unifont *unifont_unref(unifont *u) {
-        if (!u || !u->ref || --u->ref)
-                return NULL;
-
-        if (u->map != MAP_FAILED)
-                munmap((void*)u->map, u->size);
-        u->fd = safe_close(u->fd);
-        free(u);
-
-        return NULL;
-}
-
-unsigned int unifont_get_width(unifont *u) {
-        assert(u);
-
-        return 8U;
-}
-
-unsigned int unifont_get_height(unifont *u) {
-        assert(u);
-
-        return 16U;
-}
-
-unsigned int unifont_get_stride(unifont *u) {
-        assert(u);
-
-        return u->header.glyph_stride;
-}
-
-int unifont_lookup(unifont *u, unifont_glyph *out, uint32_t ucs4) {
-        unifont_glyph_header h = { };
-        const void *b = NULL;
-        unifont_glyph g = { };
-        int r;
-
-        assert_return(u, -EINVAL);
-
-        r = unifont_fetch_glyph(u, &h, &b, ucs4);
-        if (r < 0)
-                return r;
-
-        g.width = h.width * 8U;
-        g.height = 16U;
-        g.stride = u->header.glyph_stride;
-        g.cwidth = h.width;
-        g.data = b;
-
-        if (out)
-                memcpy(out, &g, sizeof(g));
-        return 0;
-}
-
-void unifont_fallback(unifont_glyph *out) {
-        static const uint8_t fallback_data[] = {
-                /* unifont 0xfffd '�' (unicode replacement character) */
-                0x00, 0x00, 0x00, 0x7e,
-                0x66, 0x5a, 0x5a, 0x7a,
-                0x76, 0x76, 0x7e, 0x76,
-                0x76, 0x7e, 0x00, 0x00,
-        };
-
-        assert(out);
-
-        out->width = 8;
-        out->height = 16;
-        out->stride = 1;
-        out->cwidth = 1;
-        out->data = fallback_data;
-}