initial commit

.clang-format

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+---
+BasedOnStyle: LLVM
+AlignEscapedNewlines: Left
+ColumnLimit: '130'
+IndentWidth: '4'
+NamespaceIndentation: All
+SpacesInParentheses: 'false'
+TabWidth: '4'
+
+...

.gitignore

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+.vscode/
+build-cg/
+*.g1a
+*.g3a

CMakeLists.txt

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+# Configure with [fxsdk build-fx] or [fxsdk build-cg], which provide the
+# toolchain file and module path of the fxSDK
+
+cmake_minimum_required(VERSION 3.18)
+# replace this with your project's name
+project(unshell C)
+
+include(GenerateG1A)
+include(GenerateG3A)
+include(Fxconv)
+find_package(Gint 2.5 REQUIRED)
+
+# include directories, put your .h files in those folders
+include_directories(include)
+
+# source files
+set(SOURCES
+	src/main.c
+  src/term.c
+	# ...
+)
+# shared assets
+set(ASSETS
+	# ...
+)
+# fx-9860G-only assets (monochrome)
+set(ASSETS_fx
+	assets-fx/example.png
+	# ...
+)
+# fx-CG-50-only assets (polychrome)
+set(ASSETS_cg
+	assets-cg/example.png
+  assets-cg/uf5x7
+	# ...
+)
+
+# Compile flags
+set(FLAGS
+	# C standard, other values: c89, c99
+	-std=c11
+
+	# general warnings
+	-Wall -Wextra -pedantic
+
+	# enable this flag to stop compilation on warnings
+	#-Werror
+
+	# specific warnings
+	# variable shadowing
+	-Wshadow
+	# switch/case safety
+	-Wswitch-default -Wswitch-enum
+	# unreachable code, bad 99% of the time
+	-Wunreachable-code
+	# prototypes warnings
+	-Wstrict-prototypes -Wmissing-prototypes
+	# function declaration
+	-Werror-implicit-function-declaration
+
+	# optimisation level
+	# -Os: like -O2 without space-expensive optimizations
+	# -O2: good speed/size tradeoff
+	# -O3: gotta go fast
+	-Os
+)
+
+fxconv_declare_assets(${ASSETS} ${ASSETS_fx} ${ASSETS_cg} WITH_METADATA)
+
+add_executable(Main ${SOURCES} ${ASSETS} ${ASSETS_${FXSDK_PLATFORM}})
+target_compile_options(Main PRIVATE ${FLAGS})
+target_link_libraries(Main Gint::Gint)
+
+if("${FXSDK_PLATFORM_LONG}" STREQUAL fx9860G)
+	generate_g1a(
+		TARGET Main
+		OUTPUT "${PROJECT_NAME}.g1a"
+		NAME "${PROJECT_NAME}"
+		ICON assets-fx/icon.png)
+elseif("${FXSDK_PLATFORM_LONG}" STREQUAL fxCG50)
+	generate_g3a(
+		TARGET Main
+		OUTPUT "${PROJECT_NAME}.g3a"
+		NAME "${PROJECT_NAME}"
+		ICONS assets-cg/icon-uns.png assets-cg/icon-sel.png)
+endif()

assets-cg/fxconv-metadata.txt

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+example.png:
+  type: bopti-image
+  name: img_example
+
+uf5x7:
+  type: font
+  name: uf5x7
+  charset: unicode
+  grid.size: 5x7
+  grid.padding: 1
+ 

assets-fx/fxconv-metadata.txt

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+example.png:
+  type: bopti-image
+  name: img_example

makefile

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+all:
+	fxsdk build-cg
+	fxlink -s -w60 -f 'mass_storage;series_cg' *.g3a
+
+clean:
+	rm -rf *.g1a *.g3a build/ build-fx/ build-cg/
+
+format:
+	find src/ -name *.[c,h] -exec clang-format --verbose -i {} \;
+
+# aliases
+build: all
+rebuild: clean build
+tidy: format

src/.vscode/c_cpp_properties.json

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+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "/home/adraenwan/.local/share/giteapc/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/clang++",
+            "cStandard": "c11",
+            "cppStandard": "c++11",
+            "intelliSenseMode": "linux-clang-x64",
+            "browse": {
+                "path": []
+            }
+        }
+    ],
+    "version": 4
+}

src/main.c

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+#include <gint/keyboard.h>
+#include <gint/timer.h>
+
+#include "term.h"
+#include <gint/display.h>
+
+#include <stdio.h>
+#include <string.h>
+
+static char *LOREM_IPSUM =
+    "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam vitae purus dolor. Praesent in ex tempus, auctor velit at, "
+    "vulputate sapien. Aenean semper, dui vitae iaculis mattis, odio libero aliquet elit, nec tempor nisl turpis vel arcu. "
+    "Vestibulum eleifend maximus enim at sollicitudin. Nulla eu commodo justo. Ut vitae pellentesque erat. Duis magna nisl, "
+    "eleifend ac massa at, blandit sollicitudin ipsum. Interdum et malesuada fames ac ante ipsum primis in faucibus. "
+    "Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Ut at libero in turpis porttitor "
+    "viverra. Ut eu pellentesque purus. Vestibulum aliquet facilisis ante, eget volutpat metus. Cras semper lacus ac mauris "
+    "imperdiet, vel egestas est luctus. Aliquam elit enim, dignissim nec enim vel, consequat ullamcorper libero. Pellentesque at "
+    "iaculis lctus. Praesent sed velit at tellus hendrerit mattis eu nec velit. Phasellus eu quam nec nisi mattis elementum quis "
+    "nec enim. Nulla efficitur turpis id tempus ultricies. Pellentesque semper lacinia mi vitae feugiat. Vestibulum leo nisi, "
+    "pretium quis felis non, mattis varius risus. "
+    "Suspendisse porttitor purus lacinia ante euismod, ut eleifend massa fermentum. Proin pretium elementum massa, at efficitur "
+    "risus iaculis sed. Nulla nec elit posuere, ultrices arcu at, porttitor turpis. Nulla purus tellus, interdum vel venenatis "
+    "a, tristique sed sapien. Donec at lacus dui. Cras vel nulla quis est suscipit semper quis ut risus. Ut tristique tempor "
+    "varius. "
+    "Donec dignissim ullamcorper tortor, nec pharetra velit venenatis sit amet. Sed maximus accumsan risus, sit amet "
+    "pellentesque sapien bibendum vel. Sed vel odio at mauris sagittis elementum viverra a diam. Vivamus turpis risus, semper ut "
+    "nulla at, efficitur viverra nulla. Nunc eget est imperdiet, consectetur mi a, hendrerit dui. Proin ut urna hendrerit justo "
+    "mollis tincidunt. Vestibulum ac commodo metus. Praesent nec mi a libero varius faucibus eleifend iaculis ligula. Phasellus "
+    "sed purus magna. Suspendisse sed nisl purus. Duis commodo pellentesque tempor. Quisque varius accumsan nunc. "
+    "Aliquam sodales cursus magna ac varius. Cras id enim eu neque euismod egestas quis eu lectus. Sed condimentum convallis "
+    "aliquam. Fusce leo elit, consectetur ac molestie in, dapibus et tortor. Nulla sapien purus, tempor sed lacus in, pretium "
+    "luctus libero. Aliquam pretium dapibus ligula, ac vestibulum nisi sollicitudin at. Mauris eu leo laoreet arcu viverra "
+    "lacinia.";
+
+static volatile int key_poll_timeout;
+static int tick_ctr = 0;
+static int callback_keypoll(void) {
+    key_poll_timeout = 0;
+    return TIMER_STOP;
+}
+
+char statusbar_up[UNS_TERM_COLS + 1];
+char statusbar_down[UNS_TERM_COLS + 1];
+
+int main(void) {
+    const int timer = timer_configure(TIMER_ANY, 64, GINT_CALL(callback_keypoll));
+
+    while (1) {
+        // set green bar
+        for (int i = 0; i < UNS_TERM_COLS; i++)
+            tgrid_sets(0, i, C_BLACK, C_GREEN, " ");
+
+        // then add acutal text
+        sprintf(statusbar_up, "↑Aa %d", tick_ctr);
+        tgrid_sets(0, 0, C_BLACK, C_GREEN, statusbar_up);
+
+        tgrid_sets(1, 0, C_WHITE, C_BLACK, LOREM_IPSUM);
+        tgrid_display();
+
+        key_poll_timeout = 1;
+        timer_start(timer);
+        key_event_t kev = getkey_opt(GETKEY_DEFAULT, &key_poll_timeout);
+        if (kev.type != KEYEV_NONE)
+            tick_ctr++;
+    }
+
+    return 1;
+}

src/term.c

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+#include "term.h"
+
+#include <gint/display.h>
+#include <stdio.h>
+
+extern font_t uf5x7;
+
+struct tcell {
+    char chr[4];
+    int fg;
+    int bg;
+};
+
+static struct tcell tgrid[UNS_TERM_ROWS][UNS_TERM_COLS];
+
+static void tgrid_set(int row, int col, int fg, int bg, char c[4]) {
+    tgrid[row][col].chr[0] = c[0];
+    tgrid[row][col].chr[1] = c[1];
+    tgrid[row][col].chr[2] = c[2];
+    tgrid[row][col].chr[3] = c[3];
+    tgrid[row][col].fg = fg;
+    tgrid[row][col].bg = bg;
+}
+
+void tgrid_sets(int row, int col, int fg, int bg, const char *s) {
+    int _row = row;
+    int _col = col;
+
+    for (int i = 0; s[i] != '\0';) {
+        if (_col >= UNS_TERM_COLS) {
+            _col = col;
+            _row++;
+        }
+
+        // boundary check
+        if (_row >= UNS_TERM_ROWS)
+            return;
+
+        // detech utf-8 char length
+        unsigned char lb = s[i];
+        int charlen = 0;
+        if ((lb & 0x80) == 0) // lead bit is zero, must be a single ascii
+            charlen = 1;
+        else if ((lb & 0xE0) == 0xC0) // 110x xxxx
+            charlen = 2;
+        else if ((lb & 0xF0) == 0xE0) // 1110 xxxx
+            charlen = 3;
+        else if ((lb & 0xF8) == 0xF0) // 1111 0xxx
+            charlen = 4;
+
+        char unichar[4] = "";
+        for (int j = 0; j < charlen; j++)
+            unichar[j] = s[i + j];
+
+        tgrid_set(_row, _col, fg, bg, unichar);
+
+        _col++;
+        i += charlen;
+    }
+}
+
+void tgrid_display(void) {
+    dclear(C_BLACK);
+    dfont(&uf5x7);
+
+    int y = 3;
+    for (int row = 0; row < UNS_TERM_ROWS; row++) {
+        int x = 2;
+        for (int col = 0; col < UNS_TERM_COLS; col++) {
+            struct tcell cell = tgrid[row][col];
+
+            char buf[5];
+            buf[0] = cell.chr[0];
+            buf[1] = cell.chr[1];
+            buf[2] = cell.chr[2];
+            buf[3] = cell.chr[3];
+            buf[4] = '0';
+
+            drect(x - 1, y - 1, x + 6, y + 8, cell.bg);
+            dtext_opt(x, y, cell.fg, C_NONE, DTEXT_LEFT, DTEXT_TOP, (char *)&buf, -1);
+
+            x += 1 + 5;
+        }
+
+        y += 1 + 7 + 2;
+    }
+
+    dupdate();
+}

src/term.h

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+#ifndef UNS_TERM_H
+#define UNS_TERM_H
+
+#define UNS_TERM_ROWS 22
+#define UNS_TERM_COLS 65
+
+void tgrid_sets(int row, int col, int fg, int bg, const char *s);
+void tgrid_display(void);
+
+#endif // #ifndef UNS_TERM_H