fcft: adapt to API changes in fcft-3.x

.builds/alpine-x64.yml

@@ -37,6 +37,11 @@ tasks:
       pip install codespell
       cd yambar
       ~/.local/bin/codespell README.md CHANGELOG.md *.c *.h doc/*.scd
+  - fcft: |
+      cd yambar/subprojects
+      git clone https://codeberg.org/dnkl/fcft.git
+      cd fcft && git checkout 3.0-dev && cd ..
+      cd ../..
   - setup: |
       mkdir -p bld/debug bld/release bld/x11-only bld/wayland-only bld/plugs-are-shared
       meson --buildtype=debug -Db_coverage=true yambar bld/debug

.gitlab-ci.yml

@@ -27,6 +27,10 @@ versions:
 debug:
   stage: build
   script:
+    - cd subprojects
+    - git clone https://codeberg.org/dnkl/fcft.git
+    - cd fcft && git checkout 3.0-dev && cd ..
+    - cd ..
     - apk add gcovr
     - mkdir -p bld/debug
     - cd bld/debug
@@ -55,6 +59,10 @@ debug:
 release:
   stage: build
   script:
+    - cd subprojects
+    - git clone https://codeberg.org/dnkl/fcft.git
+    - cd fcft && git checkout 3.0-dev && cd ..
+    - cd ..
     - mkdir -p bld/release
     - cd bld/release
     - meson --buildtype=minsize ../../
@@ -64,6 +72,10 @@ release:
 x11_only:
   stage: build
   script:
+    - cd subprojects
+    - git clone https://codeberg.org/dnkl/fcft.git
+    - cd fcft && git checkout 3.0-dev && cd ..
+    - cd ..
     - mkdir -p bld/debug
     - cd bld/debug
     - meson --buildtype=debug -Dbackend-x11=enabled -Dbackend-wayland=disabled ../../
@@ -73,6 +85,10 @@ x11_only:
 wayland_only:
   stage: build
   script:
+    - cd subprojects
+    - git clone https://codeberg.org/dnkl/fcft.git
+    - cd fcft && git checkout 3.0-dev && cd ..
+    - cd ..
     - mkdir -p bld/debug
     - cd bld/debug
     - meson --buildtype=debug -Dbackend-x11=disabled -Dbackend-wayland=enabled ../../
@@ -82,6 +98,10 @@ wayland_only:
 plugins_as_shared_modules:
   stage: build
   script:
+    - cd subprojects
+    - git clone https://codeberg.org/dnkl/fcft.git
+    - cd fcft && git checkout 3.0-dev && cd ..
+    - cd ..
     - mkdir -p bld/debug
     - cd bld/debug
     - meson --buildtype=debug -Dcore-plugins-as-shared-libraries=true ../../

.woodpecker.yml

@@ -22,6 +22,7 @@ pipeline:
       - mkdir -p subprojects && cd subprojects
       - git clone https://codeberg.org/dnkl/tllist.git
       - git clone https://codeberg.org/dnkl/fcft.git
+      - cd fcft && git checkout 3.0-dev && cd ..
       - cd ..
 
   x64:

CHANGELOG.md

@@ -25,6 +25,7 @@
 
 ### Changed
 
+* fcft >= 3.0 is now required.
 * Made `libmpdclient` an optional dependency
 * battery: unknown battery states are now mapped to ‘unknown’, instead
   of ‘discharging’.
@@ -85,7 +86,6 @@
 * network: `ssid`, `signal`, `rx-bitrate` and `rx-bitrate` tags.
 * network: `poll-interval` option (for the new `signal` and
   `*-bitrate` tags).
-* tags: percentage formatter, for range tags: `{tag_name:%}`.
 * tags: percentage tag formatter, for range tags: `{tag_name:%}`.
 * tags: kb/mb/gb, and kib/mib/gib tag formatters.
 * clock: add a config option to show UTC time.

PKGBUILD

@@ -15,7 +15,7 @@ depends=(
   'libudev.so'
   'json-c'
   'libmpdclient'
-  'fcft>=2.4.0')
+  'fcft>=3.0.0' 'fcft<4.0.0')
 optdepends=('xcb-util-errors: better X error messages')
 source=()
 

PKGBUILD.wayland-only

@@ -16,7 +16,7 @@ depends=(
   'libudev.so'
   'json-c'
   'libmpdclient'
-  'fcft>=2.4.0')
+  'fcft>=3.0.0' 'fcft<4.0.0')
 source=()
 
 pkgver() {

char32.c

@@ -0,0 +1,78 @@
+#include "char32.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <wchar.h>
+
+#define LOG_MODULE "char32"
+#define LOG_ENABLE_DBG 0
+#include "log.h"
+
+/*
+ * For now, assume we can map directly to the corresponding wchar_t
+ * functions. This is true if:
+ *
+ *  - both data types have the same size
+ *  - both use the same encoding (though we require that encoding to be UTF-32)
+ */
+
+_Static_assert(
+    sizeof(wchar_t) == sizeof(char32_t), "wchar_t vs. char32_t size mismatch");
+
+#if !defined(__STDC_UTF_32__) || !__STDC_UTF_32__
+ #error "char32_t does not use UTF-32"
+#endif
+#if (!defined(__STDC_ISO_10646__) || !__STDC_ISO_10646__) && !defined(__FreeBSD__)
+ #error "wchar_t does not use UTF-32"
+#endif
+
+size_t
+c32len(const char32_t *s)
+{
+    return wcslen((const wchar_t *)s);
+}
+
+char32_t *
+ambstoc32(const char *src)
+{
+    if (src == NULL)
+        return NULL;
+
+    const size_t src_len = strlen(src);
+
+    char32_t *ret = malloc((src_len + 1) * sizeof(ret[0]));
+    if (ret == NULL)
+        return NULL;
+
+    mbstate_t ps = {0};
+    char32_t *out = ret;
+    const char *in = src;
+    const char *const end = src + src_len + 1;
+
+    size_t chars = 0;
+    size_t rc;
+
+    while ((rc = mbrtoc32(out, in, end - in, &ps)) != 0) {
+        switch (rc) {
+        case (size_t)-1:
+        case (size_t)-2:
+        case (size_t)-3:
+            goto err;
+        }
+
+        in += rc;
+        out++;
+        chars++;
+    }
+
+    *out = U'\0';
+
+    ret = realloc(ret, (chars + 1) * sizeof(ret[0]));
+    return ret;
+
+err:
+    free(ret);
+    return NULL;
+}

char32.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <uchar.h>
+#include <stddef.h>
+
+size_t c32len(const char32_t *s);
+char32_t *ambstoc32(const char *src);

main.c

@@ -296,8 +296,9 @@ main(int argc, char *const *argv)
                    "fcft log level enum offset");
     _Static_assert((int)LOG_COLORIZE_ALWAYS == (int)FCFT_LOG_COLORIZE_ALWAYS,
                    "fcft colorize enum mismatch");
-    fcft_log_init(
-        (enum fcft_log_colorize)log_colorize, log_syslog, (enum fcft_log_class)log_level);
+    fcft_init((enum fcft_log_colorize)log_colorize, log_syslog,
+              (enum fcft_log_class)log_level);
+    atexit(&fcft_fini);
 
     const struct sigaction sa = {.sa_handler = &signal_handler};
     sigaction(SIGINT, &sa, NULL);

meson.build

@@ -71,7 +71,7 @@ backend_wayland = wayland_client.found() and wayland_cursor.found()
 
 # "My" dependencies, fallback to subproject
 tllist = dependency('tllist', version: '>=1.0.1', fallback: 'tllist')
-fcft = dependency('fcft', version: ['>=2.4.0', '<3.0.0'], fallback: 'fcft')
+fcft = dependency('fcft', version: ['>=3.0.0', '<4.0.0'], fallback: 'fcft')
 
 add_project_arguments(
   ['-D_GNU_SOURCE'] +
@@ -111,6 +111,7 @@ version = custom_target(
 
 yambar = executable(
   'yambar',
+  'char32.c', 'char32.h',
   'color.h',
   'config-verify.c', 'config-verify.h',
   'config.c', 'config.h',

particles/string.c

@@ -5,6 +5,7 @@
 #define LOG_MODULE "string"
 #define LOG_ENABLE_DBG 0
 #include "../log.h"
+#include "../char32.h"
 #include "../config.h"
 #include "../config-verify.h"
 #include "../particle.h"
@@ -149,7 +150,7 @@ instantiate(const struct particle *particle, const struct tag_set *tags)
     struct eprivate *e = calloc(1, sizeof(*e));
     struct fcft_font *font = particle->font;
 
-    wchar_t *wtext = NULL;
+    char32_t *wtext = NULL;
     char *text = tags_expand_template(p->text, tags);
 
     e->glyphs = e->allocated_glyphs = NULL;
@@ -173,17 +174,13 @@ instantiate(const struct particle *particle, const struct tag_set *tags)
         }
     }
 
-    /* Not in cache - we need to rasterize it. First, convert to wchar */
-    size_t chars = mbstowcs(NULL, text, 0);
-    if (chars == (size_t)-1)
-        goto done;
-
-    wtext = malloc((chars + 1) * sizeof(wtext[0]));
-    mbstowcs(wtext, text, chars + 1);
+    /* Not in cache - we need to rasterize it. First, convert to char32_t */
+    wtext = ambstoc32(text);
+    size_t chars = c32len(wtext);
 
     /* Truncate, if necessary */
     if (p->max_len > 0) {
-        const size_t len = wcslen(wtext);
+        const size_t len = c32len(wtext);
         if (len > p->max_len) {
 
             size_t end = p->max_len;
@@ -193,11 +190,11 @@ instantiate(const struct particle *particle, const struct tag_set *tags)
             }
 
             if (p->max_len > 1) {
-                wtext[end] = L'…';
-                wtext[end + 1] = L'\0';
+                wtext[end] = U'…';
+                wtext[end + 1] = U'\0';
                 chars = end + 1;
             } else {
-                wtext[end] = L'\0';
+                wtext[end] = U'\0';
                 chars = 0;
             }
         }
@@ -206,7 +203,7 @@ instantiate(const struct particle *particle, const struct tag_set *tags)
     e->kern_x = calloc(chars, sizeof(e->kern_x[0]));
 
     if (fcft_capabilities() & FCFT_CAPABILITY_TEXT_RUN_SHAPING) {
-        struct fcft_text_run *run = fcft_text_run_rasterize(
+        struct fcft_text_run *run = fcft_rasterize_text_run_utf32(
             font, chars, wtext, FCFT_SUBPIXEL_NONE);
 
         if (run != NULL) {
@@ -250,7 +247,7 @@ instantiate(const struct particle *particle, const struct tag_set *tags)
 
         /* Convert text to glyph masks/images. */
         for (size_t i = 0; i < chars; i++) {
-            const struct fcft_glyph *glyph = fcft_glyph_rasterize(
+            const struct fcft_glyph *glyph = fcft_rasterize_char_utf32(
                 font, wtext[i], FCFT_SUBPIXEL_NONE);
 
             if (glyph == NULL)