commit 04315afbfe16ecd55291ddb3d7308cf54b45917f Author: kolunmi Date: Mon Feb 6 14:46:53 2023 -0700 initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..00ca3ac --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +dwlb +*.o +wlr-layer-shell-unstable-v1-protocol.c +wlr-layer-shell-unstable-v1-protocol.h +xdg-shell-protocol.c +xdg-shell-protocol.h +xdg-output-protocol.c +xdg-output-protocol.h diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..1ab54b3 --- /dev/null +++ b/LICENSE @@ -0,0 +1,773 @@ +dwlb - bar for dwl + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program 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 General Public License for more details. + +---- + +Portions of the code labeled [dzen] are derived from the original dzen2 and +used under the following license: + +MIT/X Consortium License + +(C)opyright MMVII Robert Manea + +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 OR COPYRIGHT HOLDERS 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. + +---- + +Portions of the code labeled [wlroots] are derived from wlroots and used under +the following license: + +Copyright (c) 2017, 2018 Drew DeVault +Copyright (c) 2014 Jari Vetoniemi + +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 OR COPYRIGHT HOLDERS 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. + +---- + +Portions of the code labeled [swaywm] are derived from sway and are used under +the following license: + +Copyright (c) 2016-2017 Drew DeVault + +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. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..a6de8c8 --- /dev/null +++ b/Makefile @@ -0,0 +1,56 @@ +BINS = dwlb + +PREFIX ?= /usr/local +CFLAGS += -Wall -Wextra -Wno-unused-parameter -Wno-format-truncation -g + +all: $(BINS) + +clean: + $(RM) $(BINS) $(addsuffix .o,$(BINS)) + +install: all + install -D -t $(PREFIX)/bin $(BINS) + +WAYLAND_PROTOCOLS=$(shell pkg-config --variable=pkgdatadir wayland-protocols) +WAYLAND_SCANNER=$(shell pkg-config --variable=wayland_scanner wayland-scanner) + +xdg-shell-protocol.h: + $(WAYLAND_SCANNER) client-header \ + $(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@ + +xdg-shell-protocol.c: + $(WAYLAND_SCANNER) private-code \ + $(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@ + +xdg-shell-protocol.o: xdg-shell-protocol.h + +xdg-output-protocol.h: + $(WAYLAND_SCANNER) client-header \ + $(WAYLAND_PROTOCOLS)/unstable/xdg-output/xdg-output-unstable-v1.xml $@ + +xdg-output-protocol.c: + $(WAYLAND_SCANNER) private-code \ + $(WAYLAND_PROTOCOLS)/unstable/xdg-output/xdg-output-unstable-v1.xml $@ + +xdg-output-protocol.o: xdg-output-protocol.h + +wlr-layer-shell-unstable-v1-protocol.h: + $(WAYLAND_SCANNER) client-header \ + protocols/wlr-layer-shell-unstable-v1.xml $@ + +wlr-layer-shell-unstable-v1-protocol.c: + $(WAYLAND_SCANNER) private-code \ + protocols/wlr-layer-shell-unstable-v1.xml $@ + +wlr-layer-shell-unstable-v1-protocol.o: wlr-layer-shell-unstable-v1-protocol.h + +dwlb.o: utf8.h xdg-shell-protocol.h xdg-output-protocol.h wlr-layer-shell-unstable-v1-protocol.h + +# Protocol dependencies +dwlb: xdg-shell-protocol.o xdg-output-protocol.o wlr-layer-shell-unstable-v1-protocol.o + +# Library dependencies +dwlb: CFLAGS+=$(shell pkg-config --cflags wayland-client fcft pixman-1) +dwlb: LDLIBS+=$(shell pkg-config --libs wayland-client fcft pixman-1) -lrt + +.PHONY: all clean install diff --git a/README.md b/README.md new file mode 100644 index 0000000..7e00f2c --- /dev/null +++ b/README.md @@ -0,0 +1,23 @@ +# dwlb + +![screenshot](/screenshot.png "screenshot") + +dwlb is a simple bar for [dwl](https://github.com/djpohly/dwl). It is a modified version of [dtao](https://github.com/djpohly/dtao). + +## Installation +```bash +git clone https://github.com/kolunmi/dwlb +cd dwlb +make install +``` + +## Usage +```bash +dwl -s dwlb +``` + +## Status Text +The `-status` option sends status text to existing instances of dwlb. This takes two arguments: a zxdg_output_v1 name (alternatively "all" to affect all outputs or "selected" for the current output) and the text itself. + +## Other Options +Run `dwlb -h` for a full list of options. diff --git a/dwlb.c b/dwlb.c new file mode 100644 index 0000000..43817d1 --- /dev/null +++ b/dwlb.c @@ -0,0 +1,888 @@ +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "utf8.h" +#include "wlr-layer-shell-unstable-v1-protocol.h" +#include "xdg-shell-protocol.h" +#include "xdg-output-protocol.h" + +#define DIE(fmt, ...) \ + do { \ + fprintf(stderr, fmt "\n", ##__VA_ARGS__); \ + exit(1); \ + } while (0) + +#define EDIE(fmt, ...) \ + DIE(fmt ": %s", ##__VA_ARGS__, strerror(errno)); + +#define CLEANUP_DIE(why) \ + do { \ + cleanup(); \ + DIE(why); \ + } while(0) + +#define CLEANUP_EDIE(why) \ + do { \ + cleanup(); \ + EDIE(why); \ + } while(0) + +#define MIN(a, b) \ + ((a) < (b) ? (a) : (b)) +#define MAX(a, b) \ + ((a) > (b) ? (a) : (b)) + +#define PROGRAM "dwlb" +#define VERSION "0.1" +#define USAGE \ + "usage: dwlb [OPTIONS]\n" \ + " -status [OUTPUT] [TEXT] send status text to dwlb\n" \ + " -hide-vacant-tags do not display empty and inactive tags\n" \ + " -font [FONT] specify a font\n" \ + " -text-color [COLOR] specify text color\n" \ + " -active-color [COLOR] specify color to indicate active tags or monitors\n" \ + " -inactive-color [COLOR] specify color to indicate inactive tags or monitors\n" \ + " -urg-text-color [COLOR] specify text color on urgent tags\n" \ + " -urg-bg-color [COLOR] specify color of urgent tags\n" \ + " -v get version information\n" \ + " -h view this help text\n" + +typedef struct Bar Bar; +struct Bar { + struct zxdg_output_v1 *xdg_output; + struct wl_output *wl_output; + struct wl_surface *wl_surface; + struct zwlr_layer_surface_v1 *layer_surface; + + uint32_t registry_name; + char *xdg_output_name; + + uint32_t width; + uint32_t height; + uint32_t textpadding; + uint32_t stride; + uint32_t bufsize; + + uint32_t mtags; + uint32_t ctags; + uint32_t urg; + int selmon; + char *layout; + char *title; + char status[256]; + + bool redraw; + + Bar *prev, *next; +}; + +static int sock_fd; +static char socketdir[256]; +static char *socketpath = NULL; +static char sockbuf[512]; +static char stdinbuf[BUFSIZ]; + +static struct wl_display *display; +static struct wl_compositor *compositor; +static struct wl_shm *shm; +static struct zwlr_layer_shell_v1 *layer_shell; +static struct zxdg_output_manager_v1 *output_manager; + +static uint32_t height; +static uint32_t textpadding; + +static bool run_display = true; +static bool ready = false; +static bool hide_vacant = false; +static Bar *bars = NULL; + +static char *tags[9] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" }; +static struct fcft_font *font; +static pixman_color_t activecolor = { .red = 0x0000, .green = 0x5555, .blue = 0x7777, .alpha = 0xffff, }; +static pixman_color_t inactivecolor = { .red = 0x2222, .green = 0x2222, .blue = 0x2222, .alpha = 0xffff, }; +static pixman_color_t textcolor = { .red = 0xeeee, .green = 0xeeee, .blue = 0xeeee, .alpha = 0xffff, }; +static pixman_color_t urgbgcolor = { .red = 0xeeee, .green = 0xeeee, .blue = 0xeeee, .alpha = 0xffff, }; +static pixman_color_t urgtextcolor = { .red = 2222, .green = 0x2222, .blue = 0x2222, .alpha = 0xffff, }; + +static void +wl_buffer_release(void *data, struct wl_buffer *wl_buffer) +{ + /* Sent by the compositor when it's no longer using this buffer */ + wl_buffer_destroy(wl_buffer); +} + +static const struct wl_buffer_listener wl_buffer_listener = { + .release = wl_buffer_release, +}; + +/* Shared memory support function adapted from [wayland-book] */ +static int +allocate_shm_file(size_t size) +{ + int fd = memfd_create("surface", MFD_CLOEXEC); + if (fd < 0) + return -1; + int ret; + do { + ret = ftruncate(fd, size); + } while (ret < 0 && errno == EINTR); + if (ret < 0) { + close(fd); + return -1; + } + return fd; +} + +static uint32_t +draw_text(char *text, + uint32_t xpos, + uint32_t ypos, + pixman_image_t *foreground, + pixman_image_t *background, + pixman_color_t *fgcolor, + pixman_color_t *bgcolor, + uint32_t height, + uint32_t padding) +{ + uint32_t codepoint; + uint32_t state = UTF8_ACCEPT; + uint32_t ixpos = xpos; + uint32_t lastcp = 0; + pixman_image_t *fgfill = pixman_image_create_solid_fill(fgcolor); + + if (!*text) + return 0; + + xpos += padding; + + for (char *p = text; *p; p++) { + /* Returns nonzero if more bytes are needed */ + if (utf8decode(&state, &codepoint, *p)) + continue; + + /* Turn off subpixel rendering, which complicates things when + * mixed with alpha channels */ + const struct fcft_glyph *glyph = fcft_rasterize_char_utf32(font, codepoint, FCFT_SUBPIXEL_NONE); + if (!glyph) + continue; + + /* Adjust x position based on kerning with previous glyph */ + long x_kern = 0; + if (lastcp) + fcft_kerning(font, lastcp, codepoint, &x_kern, NULL); + xpos += x_kern; + lastcp = codepoint; + + /* Detect and handle pre-rendered glyphs (e.g. emoji) */ + if (pixman_image_get_format(glyph->pix) == PIXMAN_a8r8g8b8) { + /* Only the alpha channel of the mask is used, so we can + * use fgfill here to blend prerendered glyphs with the + * same opacity */ + pixman_image_composite32( + PIXMAN_OP_OVER, glyph->pix, fgfill, foreground, 0, 0, 0, 0, + xpos + glyph->x, ypos - glyph->y, glyph->width, glyph->height); + } else { + /* Applying the foreground color here would mess up + * component alphas for subpixel-rendered text, so we + * apply it when blending. */ + pixman_image_composite32( + PIXMAN_OP_OVER, fgfill, glyph->pix, foreground, 0, 0, 0, 0, + xpos + glyph->x, ypos - glyph->y, glyph->width, glyph->height); + } + + /* increment pen position */ + xpos += glyph->advance.x; + ypos += glyph->advance.y; + } + + if (state != UTF8_ACCEPT) + fprintf(stderr, "malformed UTF-8 sequence\n"); + + xpos += padding; + + if (background && bgcolor) + pixman_image_fill_boxes(PIXMAN_OP_OVER, background, + bgcolor, 1, &(pixman_box32_t){ + .x1 = ixpos, + .x2 = xpos, + .y1 = 0, + .y2 = height + }); + + pixman_image_unref(fgfill); + + return xpos; +} + +static int +draw_frame(Bar *b) +{ + /* Allocate buffer to be attached to the surface */ + int fd = allocate_shm_file(b->bufsize); + if (fd == -1) + return -1; + + uint32_t *data = mmap(NULL, b->bufsize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (data == MAP_FAILED) { + close(fd); + return -1; + } + + struct wl_shm_pool *pool = wl_shm_create_pool(shm, fd, b->bufsize); + struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0, b->width, b->height, b->stride, WL_SHM_FORMAT_ARGB8888); + wl_buffer_add_listener(buffer, &wl_buffer_listener, NULL); + wl_shm_pool_destroy(pool); + close(fd); + + /* Pixman image corresponding to main buffer */ + pixman_image_t *bar = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, data, b->width * 4); + + /* Fill bar with background color */ + pixman_image_fill_boxes(PIXMAN_OP_SRC, bar, b->selmon ? &activecolor : &inactivecolor, 1, + &(pixman_box32_t) {.x1 = 0, .x2 = b->width, .y1 = 0, .y2 = b->height}); + + /* Text background and foreground layers */ + pixman_image_t *background_left = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, NULL, b->width * 4); + pixman_image_t *foreground_left = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, NULL, b->width * 4); + pixman_image_t *background_right = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, NULL, b->width * 4); + pixman_image_t *foreground_right = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, NULL, b->width * 4); + pixman_image_t *foreground_title = pixman_image_create_bits(PIXMAN_a8r8g8b8, b->width, b->height, NULL, b->width * 4); + + /* Draw on images */ + uint32_t xpos_left = 0; + uint32_t xpos_right; + uint32_t ypos = (b->height + font->ascent - font->descent) / 2; + + uint32_t boxs = font->height / 9; + uint32_t boxw = font->height / 6 + 2; + + for (uint32_t i = 0; i < 9; i++) { + bool active = b->mtags & 1 << i; + bool occupied = b->ctags & 1 << i; + bool urgent = b->urg & 1 << i; + + if (hide_vacant && !active && !occupied && !urgent) + continue; + + if (!hide_vacant && occupied) + pixman_image_fill_boxes(PIXMAN_OP_SRC, foreground_left, + &textcolor, 1, &(pixman_box32_t){ + .x1 = xpos_left + boxs, + .x2 = xpos_left + boxs + boxw, + .y1 = boxs, + .y2 = boxs + boxw + }); + + if (urgent) + xpos_left = draw_text(tags[i], xpos_left, ypos, foreground_left, background_left, + &urgtextcolor, &urgbgcolor, b->height, b->textpadding); + else + xpos_left = draw_text(tags[i], xpos_left, ypos, foreground_left, background_left, + &textcolor, active ? &activecolor : &inactivecolor, b->height, b->textpadding); + } + xpos_left = draw_text(b->layout, xpos_left, ypos, foreground_left, background_left, + &textcolor, &inactivecolor, b->height, b->textpadding); + + xpos_right = draw_text(b->status, 0, ypos, foreground_right, background_right, + &textcolor, &inactivecolor, b->height, b->textpadding); + if (xpos_right > b->width) + xpos_right = b->width; + + draw_text(b->title, 0, ypos, foreground_title, NULL, + &textcolor, NULL, b->height, b->textpadding); + + /* Draw background and foreground on bar */ + pixman_image_composite32(PIXMAN_OP_OVER, foreground_title, NULL, bar, 0, 0, 0, 0, xpos_left, 0, b->width, b->height); + pixman_image_composite32(PIXMAN_OP_OVER, background_right, NULL, bar, 0, 0, 0, 0, b->width - xpos_right, 0, b->width, b->height); + pixman_image_composite32(PIXMAN_OP_OVER, foreground_right, NULL, bar, 0, 0, 0, 0, b->width - xpos_right, 0, b->width, b->height); + pixman_image_composite32(PIXMAN_OP_OVER, background_left, NULL, bar, 0, 0, 0, 0, 0, 0, b->width, b->height); + pixman_image_composite32(PIXMAN_OP_OVER, foreground_left, NULL, bar, 0, 0, 0, 0, 0, 0, b->width, b->height); + + pixman_image_unref(foreground_left); + pixman_image_unref(background_left); + pixman_image_unref(foreground_right); + pixman_image_unref(background_right); + pixman_image_unref(foreground_title); + pixman_image_unref(bar); + + munmap(data, b->bufsize); + + wl_surface_attach(b->wl_surface, buffer, 0, 0); + wl_surface_damage_buffer(b->wl_surface, 0, 0, b->width, b->height); + wl_surface_commit(b->wl_surface); + + return 0; +} + +/* Layer-surface setup adapted from layer-shell example in [wlroots] */ +static void +layer_surface_configure(void *data, struct zwlr_layer_surface_v1 *surface, + uint32_t serial, uint32_t w, uint32_t h) +{ + Bar *b = (Bar *)data; + + b->width = w; + b->height = h; + b->stride = b->width * 4; + b->bufsize = b->stride * b->height; + + zwlr_layer_surface_v1_set_exclusive_zone(b->layer_surface, b->height); + zwlr_layer_surface_v1_ack_configure(surface, serial); + + draw_frame(b); +} + +static void +layer_surface_closed(void *data, struct zwlr_layer_surface_v1 *surface) +{ + Bar *b = (Bar *)data; + + zwlr_layer_surface_v1_destroy(surface); + wl_surface_destroy(b->wl_surface); + run_display = false; +} + +static void +cleanup(void) +{ + if (socketpath) + unlink(socketpath); +} + +static struct zwlr_layer_surface_v1_listener layer_surface_listener = { + .configure = layer_surface_configure, + .closed = layer_surface_closed, +}; + +static void +output_name(void *data, struct zxdg_output_v1 *xdg_output, const char *name) +{ + Bar *b = (Bar *)data; + + /* Is this necessary? */ + if (b->xdg_output_name) + free(b->xdg_output_name); + if (!(b->xdg_output_name = strdup(name))) + CLEANUP_EDIE("strdup"); +} + +static void +output_logical_position(void *data, struct zxdg_output_v1 *xdg_output, + int32_t x, int32_t y) +{ +} + +static void +output_logical_size(void *data, struct zxdg_output_v1 *xdg_output, + int32_t width, int32_t height) +{ +} + +static void +output_done(void *data, struct zxdg_output_v1 *xdg_output) +{ +} + +static void +output_description(void *data, struct zxdg_output_v1 *xdg_output, + const char *description) +{ +} + +static struct zxdg_output_v1_listener output_listener = { + .name = output_name, + .description = output_description, + .done = output_done, + .logical_position = output_logical_position, + .logical_size = output_logical_size +}; + +static void +setup_bar(Bar *b) +{ + b->height = height; + b->textpadding = textpadding; + + b->layout = "[]="; + b->title = ""; + + b->xdg_output = zxdg_output_manager_v1_get_xdg_output(output_manager, b->wl_output); + if (!b->xdg_output) + CLEANUP_DIE("Could not create xdg_output"); + zxdg_output_v1_add_listener(b->xdg_output, &output_listener, b); + + b->wl_surface = wl_compositor_create_surface(compositor); + if (!b->wl_surface) + CLEANUP_DIE("Could not create wl_surface"); + + b->layer_surface = zwlr_layer_shell_v1_get_layer_surface(layer_shell, b->wl_surface, b->wl_output, + ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM, PROGRAM); + if (!b->layer_surface) + CLEANUP_DIE("Could not create layer_surface"); + zwlr_layer_surface_v1_add_listener(b->layer_surface, &layer_surface_listener, b); + + zwlr_layer_surface_v1_set_size(b->layer_surface, 0, b->height); + zwlr_layer_surface_v1_set_anchor(b->layer_surface, + ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP + | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT + | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT); + wl_surface_commit(b->wl_surface); +} + +static void +handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + if (strcmp(interface, wl_compositor_interface.name) == 0) { + compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 4); + } else if (strcmp(interface, wl_shm_interface.name) == 0) { + shm = wl_registry_bind(registry, name, &wl_shm_interface, 1); + } else if (strcmp(interface, wl_output_interface.name) == 0) { + Bar *b = malloc(sizeof(Bar)); + if (!b) + CLEANUP_EDIE("malloc"); + memset(b, 0, sizeof(Bar)); + b->registry_name = name; + b->wl_output = wl_registry_bind(registry, name, &wl_output_interface, 1); + DL_APPEND(bars, b); + if (ready) + setup_bar(b); + } else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) { + layer_shell = wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, 1); + } else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0) { + output_manager = wl_registry_bind(registry, name, &zxdg_output_manager_v1_interface, 2); + } +} + +static void +teardown_bar(Bar *b) +{ + zxdg_output_v1_destroy(b->xdg_output); + wl_surface_destroy(b->wl_surface); + zwlr_layer_surface_v1_destroy(b->layer_surface); + if (b->xdg_output_name) + free(b->xdg_output_name); + free(b); +} + +static void +handle_global_remove(void *data, struct wl_registry *registry, uint32_t name) +{ + Bar *b; + DL_FOREACH(bars, b) + if (b->registry_name == name) + break; + + if (!b) + return; + + DL_DELETE(bars, b); + teardown_bar(b); +} + + +static const struct wl_registry_listener registry_listener = { + .global = handle_global, + .global_remove = handle_global_remove +}; + +static int +advance_word(char **beg, char **end) +{ + for (*beg = *end; **beg == ' '; (*beg)++); + for (*end = *beg; **end && **end != ' '; (*end)++); + if (!**end) + /* last word */ + return -1; + **end = '\0'; + (*end)++; + return 0; +} + +#define ADVANCE() advance_word(&wordbeg, &wordend) +#define ADVANCE_IF_LAST_CONT() if (ADVANCE() == -1) continue +#define ADVANCE_IF_LAST_BREAK() if (ADVANCE() == -1) break + +static void +read_stdin(void) +{ + ssize_t len = read(STDIN_FILENO, stdinbuf, sizeof stdinbuf); + if (len == -1) + CLEANUP_EDIE("read"); + if (len == 0) { + run_display = 0; + return; + } + + char *end = (char *)&stdinbuf + len; + char *linebeg, *lineend; + char *wordbeg, *wordend; + + for (linebeg = (char *)&stdinbuf; + (lineend = memchr(linebeg, '\n', end - linebeg)); + linebeg = lineend) { + *lineend++ = '\0'; + wordend = linebeg; + + ADVANCE_IF_LAST_CONT(); + + Bar *b; + DL_FOREACH(bars, b) + if (b->xdg_output_name) + if (!strcmp(wordbeg, b->xdg_output_name)) + break; + if (!b) + continue; + + ADVANCE_IF_LAST_CONT(); + + if (!strcmp(wordbeg, "tags")) { + ADVANCE_IF_LAST_CONT(); + b->ctags = atoi(wordbeg); + ADVANCE_IF_LAST_CONT(); + b->mtags = atoi(wordbeg); + ADVANCE_IF_LAST_CONT(); + /* skip sel */ + ADVANCE(); + b->urg = atoi(wordbeg); + b->redraw = true; + } else if (!strcmp(wordbeg, "layout")) { + b->layout = wordend; + b->redraw = true; + } else if (!strcmp(wordbeg, "title")) { + b->title = wordend; + b->redraw = true; + } else if (!strcmp(wordbeg, "selmon")) { + ADVANCE(); + b->selmon = atoi(wordbeg); + b->redraw = true; + } + } +} + +static void +read_socket(void) +{ + int cli_fd; + if ((cli_fd = accept(sock_fd, NULL, 0)) == -1) + CLEANUP_EDIE("accept"); + ssize_t len = recv(cli_fd, sockbuf, sizeof sockbuf - 1, 0); + if (len == -1) + CLEANUP_EDIE("recv"); + close(cli_fd); + if (len == 0) + return; + sockbuf[len] = '\0'; + + do { + char *wordbeg, *wordend; + wordend = (char *)&sockbuf; + + ADVANCE_IF_LAST_BREAK(); + + Bar *b; + bool all = false; + + if (!strcmp(wordbeg, "all")) { + all = true; + } else if (!strcmp(wordbeg, "selected")) { + DL_FOREACH(bars, b) + if (b->selmon) + break; + } else { + DL_FOREACH(bars, b) + if (b->xdg_output_name) + if (!strcmp(wordbeg, b->xdg_output_name)) + break; + } + + if (!all && !b) + break; + + ADVANCE_IF_LAST_BREAK(); + + if (!strcmp(wordbeg, "status")) { + if (all) { + DL_FOREACH(bars, b) { + snprintf(b->status, sizeof b->status, "%s", wordend); + b->redraw = true; + } + } else { + snprintf(b->status, sizeof b->status, "%s", wordend); + b->redraw = true; + } + } + } while (0); +} + +static void +event_loop(void) +{ + int wl_fd = wl_display_get_fd(display); + + while (run_display) { + fd_set rfds; + FD_ZERO(&rfds); + FD_SET(STDIN_FILENO, &rfds); + FD_SET(sock_fd, &rfds); + FD_SET(wl_fd, &rfds); + + /* Does this need to be inside the loop? */ + wl_display_flush(display); + + if (select(MAX(sock_fd, wl_fd) + 1, &rfds, NULL, NULL, NULL) == -1) + continue; + + if (FD_ISSET(STDIN_FILENO, &rfds)) + read_stdin(); + + if (FD_ISSET(sock_fd, &rfds)) + read_socket(); + + if (FD_ISSET(wl_fd, &rfds)) + if (wl_display_dispatch(display) == -1) + break; + + Bar *b; + DL_FOREACH(bars, b) { + if (b->redraw) { + draw_frame(b); + b->redraw = false; + } + } + } +} + +static void +client_send_command(struct sockaddr_un *sock_address, + const char *output, + const char *cmd, + const char *data) +{ + DIR *dir; + if (!(dir = opendir(socketdir))) + EDIE("Could not open directory '%s'", socketdir); + + if (data) + snprintf(sockbuf, sizeof sockbuf, "%s %s %s", output, cmd, data); + else + snprintf(sockbuf, sizeof sockbuf, "%s %s", output, cmd); + + size_t len = strlen(sockbuf); + + struct dirent *de; + bool newfd = true; + while ((de = readdir(dir))) { + if (!strncmp(de->d_name, "dwlb-", 5)) { + if (newfd) + if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 1)) == -1) + EDIE("socket"); + snprintf(sock_address->sun_path, sizeof sock_address->sun_path, "%s/%s", socketdir, de->d_name); + if (connect(sock_fd, (struct sockaddr *) sock_address, sizeof(*sock_address)) == -1) { + newfd = false; + continue; + } + + if (send(sock_fd, sockbuf, len, 0) == -1) + fprintf(stderr, "Could not send status data to '%s'\n", sock_address->sun_path); + close(sock_fd); + newfd = true; + } + } + + closedir(dir); +} + +/* Color parsing logic adapted from [sway] */ +static int +parse_color(const char *str, pixman_color_t *clr) +{ + if (*str == '#') + str++; + int len = strlen(str); + + // Disallows "0x" prefix that strtoul would ignore + if ((len != 6 && len != 8) || !isxdigit(str[0]) || !isxdigit(str[1])) + return -1; + + char *ptr; + uint32_t parsed = strtoul(str, &ptr, 16); + if (*ptr) + return -1; + + if (len == 8) { + clr->alpha = (parsed & 0xff) * 0x101; + parsed >>= 8; + } else { + clr->alpha = 0xffff; + } + clr->red = ((parsed >> 16) & 0xff) * 0x101; + clr->green = ((parsed >> 8) & 0xff) * 0x101; + clr->blue = ((parsed >> 0) & 0xff) * 0x101; + return 0; +} + +void +sig_handler(int sig) +{ + if (sig == SIGINT || sig == SIGHUP || sig == SIGTERM) + run_display = false; +} + +int +main(int argc, char **argv) +{ + char *fontstr = ""; + char *xdgruntimedir; + struct sockaddr_un sock_address; + + /* Establish socket directory */ + if (!(xdgruntimedir = getenv("XDG_RUNTIME_DIR"))) + DIE("Could not retrieve XDG_RUNTIME_DIR"); + snprintf(socketdir, sizeof socketdir, "%s/dwlb", xdgruntimedir); + if (mkdir(socketdir, S_IRWXU) == -1) + if (errno != EEXIST) + EDIE("Could not create directory '%s'", socketdir); + sock_address.sun_family = AF_UNIX; + + /* Parse options */ + for (int i = 1; i < argc; i++) { + if (!strcmp(argv[i], "-status")) { + if (++i + 1 >= argc) + DIE("Option -status requires two arguments"); + client_send_command(&sock_address, argv[i], "status", argv[i + 1]); + return 0; + } else if (!strcmp(argv[i], "-hide-vacant-tags")) { + hide_vacant = true; + } else if (!strcmp(argv[i], "-font")) { + if (++i >= argc) + DIE("Option -font requires an argument"); + fontstr = argv[i]; + } else if (!strcmp(argv[i], "-text-color")) { + if (++i >= argc) + DIE("Option -text-color requires an argument"); + if (parse_color(argv[i], &textcolor) == -1) + DIE("malformed color string"); + } else if (!strcmp(argv[i], "-active-color")) { + if (++i >= argc) + DIE("Option -active-color requires an argument"); + if (parse_color(argv[i], &activecolor) == -1) + DIE("malformed color string"); + } else if (!strcmp(argv[i], "-inactive-color")) { + if (++i >= argc) + DIE("Option -inactive-color requires an argument"); + if (parse_color(argv[i], &inactivecolor) == -1) + DIE("malformed color string"); + } else if (!strcmp(argv[i], "-urg-text-color")) { + if (++i >= argc) + DIE("Option -urg-text-color requires an argument"); + if (parse_color(argv[i], &urgtextcolor) == -1) + DIE("malformed color string"); + } else if (!strcmp(argv[i], "-urg-bg-color")) { + if (++i >= argc) + DIE("Option -urg-bg-color requires an argument"); + if (parse_color(argv[i], &urgbgcolor) == -1) + DIE("malformed color string"); + } else if (!strcmp(argv[i], "-v")) { + fprintf(stderr, PROGRAM " " VERSION "\n"); + return 0; + } else if (!strcmp(argv[i], "-h")) { + fprintf(stderr, USAGE); + return 0; + } else { + DIE("Option '%s' not recognized\n" USAGE, argv[i]); + } + } + + /* Set up display and protocols */ + display = wl_display_connect(NULL); + if (!display) + DIE("Failed to create display"); + + struct wl_registry *registry = wl_display_get_registry(display); + wl_registry_add_listener(registry, ®istry_listener, NULL); + wl_display_roundtrip(display); + if (!compositor || !shm || !layer_shell || !output_manager) + DIE("Compositor does not support all needed protocols"); + + /* Load selected font */ + fcft_init(FCFT_LOG_COLORIZE_AUTO, 0, FCFT_LOG_CLASS_ERROR); + fcft_set_scaling_filter(FCFT_SCALING_FILTER_LANCZOS3); + font = fcft_from_name(1, (const char *[]) {fontstr}, NULL); + if (!font) + DIE("Could not load font"); + textpadding = font->height / 2; + height = font->ascent + font->descent; + + /* Setup bars */ + Bar *b; + DL_FOREACH(bars, b) + setup_bar(b); + wl_display_roundtrip(display); + + /* Set up socket */ + for (uint32_t i = 0;; i++) { + if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 1)) == -1) + DIE("socket"); + snprintf(sock_address.sun_path, sizeof sock_address.sun_path, "%s/dwlb-%i", socketdir, i); + if (connect(sock_fd, (struct sockaddr *) &sock_address, sizeof sock_address) == -1) + break; + close(sock_fd); + } + + socketpath = (char *)&sock_address.sun_path; + unlink(socketpath); + if (bind(sock_fd, (struct sockaddr *) &sock_address, sizeof sock_address) == -1) + CLEANUP_EDIE("bind"); + if (listen(sock_fd, SOMAXCONN) == -1) + CLEANUP_EDIE("listen"); + fcntl(sock_fd, F_SETFD, FD_CLOEXEC | fcntl(sock_fd, F_GETFD)); + + /* Set up signals */ + signal(SIGINT, sig_handler); + signal(SIGHUP, sig_handler); + signal(SIGTERM, sig_handler); + signal(SIGPIPE, SIG_IGN); + + /* Run */ + ready = true; + event_loop(); + + /* Clean everything up */ + close(sock_fd); + unlink(socketpath); + + zwlr_layer_shell_v1_destroy(layer_shell); + zxdg_output_manager_v1_destroy(output_manager); + + Bar *t; + DL_FOREACH_SAFE(bars, b, t) + teardown_bar(b); + + fcft_destroy(font); + fcft_fini(); + + wl_shm_destroy(shm); + wl_compositor_destroy(compositor); + wl_registry_destroy(registry); + wl_display_disconnect(display); + + return 0; +} diff --git a/protocols/wlr-layer-shell-unstable-v1.xml b/protocols/wlr-layer-shell-unstable-v1.xml new file mode 100644 index 0000000..d62fd51 --- /dev/null +++ b/protocols/wlr-layer-shell-unstable-v1.xml @@ -0,0 +1,390 @@ + + + + Copyright © 2017 Drew DeVault + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that copyright notice and this permission + notice appear in supporting documentation, and that the name of + the copyright holders not be used in advertising or publicity + pertaining to distribution of the software without specific, + written prior permission. The copyright holders make no + representations about the suitability of this software for any + purpose. It is provided "as is" without express or implied + warranty. + + THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY + SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF + THIS SOFTWARE. + + + + + Clients can use this interface to assign the surface_layer role to + wl_surfaces. Such surfaces are assigned to a "layer" of the output and + rendered with a defined z-depth respective to each other. They may also be + anchored to the edges and corners of a screen and specify input handling + semantics. This interface should be suitable for the implementation of + many desktop shell components, and a broad number of other applications + that interact with the desktop. + + + + + Create a layer surface for an existing surface. This assigns the role of + layer_surface, or raises a protocol error if another role is already + assigned. + + Creating a layer surface from a wl_surface which has a buffer attached + or committed is a client error, and any attempts by a client to attach + or manipulate a buffer prior to the first layer_surface.configure call + must also be treated as errors. + + After creating a layer_surface object and setting it up, the client + must perform an initial commit without any buffer attached. + The compositor will reply with a layer_surface.configure event. + The client must acknowledge it and is then allowed to attach a buffer + to map the surface. + + You may pass NULL for output to allow the compositor to decide which + output to use. Generally this will be the one that the user most + recently interacted with. + + Clients can specify a namespace that defines the purpose of the layer + surface. + + + + + + + + + + + + + + + + + These values indicate which layers a surface can be rendered in. They + are ordered by z depth, bottom-most first. Traditional shell surfaces + will typically be rendered between the bottom and top layers. + Fullscreen shell surfaces are typically rendered at the top layer. + Multiple surfaces can share a single layer, and ordering within a + single layer is undefined. + + + + + + + + + + + + + This request indicates that the client will not use the layer_shell + object any more. Objects that have been created through this instance + are not affected. + + + + + + + An interface that may be implemented by a wl_surface, for surfaces that + are designed to be rendered as a layer of a stacked desktop-like + environment. + + Layer surface state (layer, size, anchor, exclusive zone, + margin, interactivity) is double-buffered, and will be applied at the + time wl_surface.commit of the corresponding wl_surface is called. + + Attaching a null buffer to a layer surface unmaps it. + + Unmapping a layer_surface means that the surface cannot be shown by the + compositor until it is explicitly mapped again. The layer_surface + returns to the state it had right after layer_shell.get_layer_surface. + The client can re-map the surface by performing a commit without any + buffer attached, waiting for a configure event and handling it as usual. + + + + + Sets the size of the surface in surface-local coordinates. The + compositor will display the surface centered with respect to its + anchors. + + If you pass 0 for either value, the compositor will assign it and + inform you of the assignment in the configure event. You must set your + anchor to opposite edges in the dimensions you omit; not doing so is a + protocol error. Both values are 0 by default. + + Size is double-buffered, see wl_surface.commit. + + + + + + + + Requests that the compositor anchor the surface to the specified edges + and corners. If two orthogonal edges are specified (e.g. 'top' and + 'left'), then the anchor point will be the intersection of the edges + (e.g. the top left corner of the output); otherwise the anchor point + will be centered on that edge, or in the center if none is specified. + + Anchor is double-buffered, see wl_surface.commit. + + + + + + + Requests that the compositor avoids occluding an area with other + surfaces. The compositor's use of this information is + implementation-dependent - do not assume that this region will not + actually be occluded. + + A positive value is only meaningful if the surface is anchored to one + edge or an edge and both perpendicular edges. If the surface is not + anchored, anchored to only two perpendicular edges (a corner), anchored + to only two parallel edges or anchored to all edges, a positive value + will be treated the same as zero. + + A positive zone is the distance from the edge in surface-local + coordinates to consider exclusive. + + Surfaces that do not wish to have an exclusive zone may instead specify + how they should interact with surfaces that do. If set to zero, the + surface indicates that it would like to be moved to avoid occluding + surfaces with a positive exclusive zone. If set to -1, the surface + indicates that it would not like to be moved to accommodate for other + surfaces, and the compositor should extend it all the way to the edges + it is anchored to. + + For example, a panel might set its exclusive zone to 10, so that + maximized shell surfaces are not shown on top of it. A notification + might set its exclusive zone to 0, so that it is moved to avoid + occluding the panel, but shell surfaces are shown underneath it. A + wallpaper or lock screen might set their exclusive zone to -1, so that + they stretch below or over the panel. + + The default value is 0. + + Exclusive zone is double-buffered, see wl_surface.commit. + + + + + + + Requests that the surface be placed some distance away from the anchor + point on the output, in surface-local coordinates. Setting this value + for edges you are not anchored to has no effect. + + The exclusive zone includes the margin. + + Margin is double-buffered, see wl_surface.commit. + + + + + + + + + + Types of keyboard interaction possible for layer shell surfaces. The + rationale for this is twofold: (1) some applications are not interested + in keyboard events and not allowing them to be focused can improve the + desktop experience; (2) some applications will want to take exclusive + keyboard focus. + + + + + This value indicates that this surface is not interested in keyboard + events and the compositor should never assign it the keyboard focus. + + This is the default value, set for newly created layer shell surfaces. + + This is useful for e.g. desktop widgets that display information or + only have interaction with non-keyboard input devices. + + + + + Request exclusive keyboard focus if this surface is above the shell surface layer. + + For the top and overlay layers, the seat will always give + exclusive keyboard focus to the top-most layer which has keyboard + interactivity set to exclusive. If this layer contains multiple + surfaces with keyboard interactivity set to exclusive, the compositor + determines the one receiving keyboard events in an implementation- + defined manner. In this case, no guarantee is made when this surface + will receive keyboard focus (if ever). + + For the bottom and background layers, the compositor is allowed to use + normal focus semantics. + + This setting is mainly intended for applications that need to ensure + they receive all keyboard events, such as a lock screen or a password + prompt. + + + + + This requests the compositor to allow this surface to be focused and + unfocused by the user in an implementation-defined manner. The user + should be able to unfocus this surface even regardless of the layer + it is on. + + Typically, the compositor will want to use its normal mechanism to + manage keyboard focus between layer shell surfaces with this setting + and regular toplevels on the desktop layer (e.g. click to focus). + Nevertheless, it is possible for a compositor to require a special + interaction to focus or unfocus layer shell surfaces (e.g. requiring + a click even if focus follows the mouse normally, or providing a + keybinding to switch focus between layers). + + This setting is mainly intended for desktop shell components (e.g. + panels) that allow keyboard interaction. Using this option can allow + implementing a desktop shell that can be fully usable without the + mouse. + + + + + + + Set how keyboard events are delivered to this surface. By default, + layer shell surfaces do not receive keyboard events; this request can + be used to change this. + + This setting is inherited by child surfaces set by the get_popup + request. + + Layer surfaces receive pointer, touch, and tablet events normally. If + you do not want to receive them, set the input region on your surface + to an empty region. + + Keyboard interactivity is double-buffered, see wl_surface.commit. + + + + + + + This assigns an xdg_popup's parent to this layer_surface. This popup + should have been created via xdg_surface::get_popup with the parent set + to NULL, and this request must be invoked before committing the popup's + initial state. + + See the documentation of xdg_popup for more details about what an + xdg_popup is and how it is used. + + + + + + + When a configure event is received, if a client commits the + surface in response to the configure event, then the client + must make an ack_configure request sometime before the commit + request, passing along the serial of the configure event. + + If the client receives multiple configure events before it + can respond to one, it only has to ack the last configure event. + + A client is not required to commit immediately after sending + an ack_configure request - it may even ack_configure several times + before its next surface commit. + + A client may send multiple ack_configure requests before committing, but + only the last request sent before a commit indicates which configure + event the client really is responding to. + + + + + + + This request destroys the layer surface. + + + + + + The configure event asks the client to resize its surface. + + Clients should arrange their surface for the new states, and then send + an ack_configure request with the serial sent in this configure event at + some point before committing the new surface. + + The client is free to dismiss all but the last configure event it + received. + + The width and height arguments specify the size of the window in + surface-local coordinates. + + The size is a hint, in the sense that the client is free to ignore it if + it doesn't resize, pick a smaller size (to satisfy aspect ratio or + resize in steps of NxM pixels). If the client picks a smaller size and + is anchored to two opposite anchors (e.g. 'top' and 'bottom'), the + surface will be centered on this axis. + + If the width or height arguments are zero, it means the client should + decide its own window dimension. + + + + + + + + + The closed event is sent by the compositor when the surface will no + longer be shown. The output may have been destroyed or the user may + have asked for it to be removed. Further changes to the surface will be + ignored. The client should destroy the resource after receiving this + event, and create a new surface if they so choose. + + + + + + + + + + + + + + + + + + + + + + Change the layer that the surface is rendered on. + + Layer is double-buffered, see wl_surface.commit. + + + + + diff --git a/screenshot.png b/screenshot.png new file mode 100644 index 0000000..6e1b761 Binary files /dev/null and b/screenshot.png differ diff --git a/utf8.h b/utf8.h new file mode 100644 index 0000000..c7db188 --- /dev/null +++ b/utf8.h @@ -0,0 +1,55 @@ +// Copyright (c) 2008-2009 Bjoern Hoehrmann +// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details. + +// 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 OR COPYRIGHT HOLDERS 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. + +#include + +#define UTF8_ACCEPT 0 +#define UTF8_REJECT 1 + +static const uint8_t utf8d[] = { + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 00..1f + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 20..3f + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 40..5f + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 60..7f + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, // 80..9f + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, // a0..bf + 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // c0..df + 0xa,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x3,0x4,0x3,0x3, // e0..ef + 0xb,0x6,0x6,0x6,0x5,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8,0x8, // f0..ff + 0x0,0x1,0x2,0x3,0x5,0x8,0x7,0x1,0x1,0x1,0x4,0x6,0x1,0x1,0x1,0x1, // s0..s0 + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,1,1,1,1, // s1..s2 + 1,2,1,1,1,1,1,2,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1, // s3..s4 + 1,2,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,3,1,3,1,1,1,1,1,1, // s5..s6 + 1,3,1,1,1,1,1,3,1,3,1,1,1,1,1,1,1,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // s7..s8 +}; + +static inline uint32_t +utf8decode(uint32_t *state, uint32_t *codep, uint8_t byte) +{ + uint32_t type = utf8d[byte]; + + *codep = (*state != UTF8_ACCEPT) ? + (byte & 0x3fu) | (*codep << 6) : + (0xff >> type) & (byte); + + *state = utf8d[256 + *state*16 + type]; + return *state; +}