Porting to WASM

2025-11-24 22:59:39 +01:00
parent 56cdb9557d
commit fcefe9f827
5 changed files with 412 additions and 0 deletions
--- a/build.bat
+++ b/build.bat
@@ -0,0 +1,31 @@
+@echo off
+
+mkdir build
+cd build
+
+if "%1"=="release" (
+    set profile_flags=-DDEBUG_BUILD=0 -O2
+) else (
+    set profile_flags=-DDEBUG_BUILD=1
+)
+
+if not exist "lbaselib.obj" (
+    cl -Zi -nologo -I../src/external/lua/src -I../src/external/glad ../src/external/lua/src/lbaselib.c ../src/external/lua/src/lctype.c ../src/external/lua/src/ldo.c ../src/external/lua/src/lgc.c ../src/external/lua/src/liolib.c ../src/external/lua/src/lmem.c ../src/external/lua/src/lopcodes.c ../src/external/lua/src/lstate.c ../src/external/lua/src/ltable.c ../src/external/lua/src/lundump.c ../src/external/lua/src/lzio.c ../src/external/lua/src/lapi.c ../src/external/lua/src/lcode.c ../src/external/lua/src/ldblib.c ../src/external/lua/src/ldump.c ../src/external/lua/src/llex.c ../src/external/lua/src/loadlib.c ../src/external/lua/src/loslib.c ../src/external/lua/src/lstring.c ../src/external/lua/src/ltablib.c ../src/external/lua/src/lutf8lib.c ../src/external/lua/src/lauxlib.c ../src/external/lua/src/lcorolib.c ../src/external/lua/src/ldebug.c ../src/external/lua/src/lfunc.c ../src/external/lua/src/linit.c ../src/external/lua/src/lmathlib.c ../src/external/lua/src/lobject.c ../src/external/lua/src/lparser.c ../src/external/lua/src/lstrlib.c ../src/external/lua/src/ltm.c ../src/external/lua/src/lvm.c ../src/external/glad/glad.c -c
+)
+
+if not exist "metaprogram.exe" (
+    cl /WX /W3 /wd4200 /diagnostics:column -FC -Zi -nologo -Fe:metaprogram.exe -I../src ../src/metaprogram/metaprogram.cpp ../src/basic/win32.cpp
+)
+metaprogram.exe
+
+
+set sdl=../src/external/SDL/win32-static/SDL3-static.lib ../src/external/SDL/win32-static/SDL_uclibc.lib
+cl /EHsc- /MD /Zi /FC /nologo /WX /W3 /wd4200 /diagnostics:column %profile_flags% ../src/text_editor/text_editor.cpp ../src/basic/win32.cpp -Fe:te.exe -I../src/external/SDL/include -I../src/external/lua/src -I../src/external/glad -I../src/ lbaselib.obj lctype.obj ldo.obj lgc.obj liolib.obj lmem.obj lopcodes.obj lstate.obj ltable.obj lundump.obj lzio.obj lapi.obj lcode.obj ldblib.obj ldump.obj llex.obj loadlib.obj loslib.obj lstring.obj ltablib.obj lutf8lib.obj lauxlib.obj lcorolib.obj ldebug.obj lfunc.obj  linit.obj  lmathlib.obj  lobject.obj  lparser.obj  lstrlib.obj  ltm.obj  lvm.obj glad.obj  kernel32.lib gdi32.lib user32.lib  Imm32.lib ole32.lib Shell32.lib OleAut32.lib  Cfgmgr32.lib    Setupapi.lib   Advapi32.lib version.lib winmm.lib %sdl% -link /SUBSYSTEM:WINDOWS /NODEFAULTLIB:LIBCMT /NODEFAULTLIB:MSVCRTD
+
+if "%1"=="release" (
+    copy te.exe ..\data\te.exe
+    echo written ..\data\te.exe
+) else (
+    copy te.exe ..\data\te_debug.exe
+    echo written ..\data\te_debug.exe
+)
--- a/build_web.bat
+++ b/build_web.bat
@@ -0,0 +1,13 @@
+@echo off
+
+set incs=-Isrc/external/SDL/include -Isrc/external/lua/src -Isrc/external/glad -Lsrc/external/SDL/build_web -Isrc
+set wasmflags=-gsource-map -sALLOW_MEMORY_GROWTH=1 -sMAXIMUM_MEMORY=1gb -msimd128 -sTOTAL_STACK=5MB -sINITIAL_MEMORY=256mb -sUSE_WEBGL2 -sFULL_ES3=1 -sASYNCIFY -sASSERTIONS=2
+set flags=-Wno-writable-strings -nostdlib++ -fno-exceptions -fdiagnostics-absolute-paths -g -DDEBUG_BUILD=1
+
+mkdir build
+cd build
+clang ../src/metaprogram/metaprogram.cpp ../src/basic/win32.cpp -o metaprogram.exe %flags% -I../src
+metaprogram.exe
+cd ..
+
+emcc -o text_editor.html --shell-file=data/shell.html %flags% %incs% %wasmflags% -lm -lSDL3 src/text_editor/text_editor.cpp src/basic/wasm.cpp src/external/lua/src/lbaselib.c src/external/lua/src/lctype.c src/external/lua/src/ldo.c src/external/lua/src/lgc.c src/external/lua/src/liolib.c src/external/lua/src/lmem.c src/external/lua/src/lopcodes.c src/external/lua/src/lstate.c src/external/lua/src/ltable.c src/external/lua/src/lundump.c src/external/lua/src/lzio.c src/external/lua/src/lapi.c src/external/lua/src/lcode.c src/external/lua/src/ldblib.c src/external/lua/src/ldump.c src/external/lua/src/llex.c src/external/lua/src/loadlib.c src/external/lua/src/loslib.c src/external/lua/src/lstring.c src/external/lua/src/ltablib.c src/external/lua/src/lutf8lib.c src/external/lua/src/lauxlib.c src/external/lua/src/lcorolib.c src/external/lua/src/ldebug.c src/external/lua/src/lfunc.c src/external/lua/src/linit.c src/external/lua/src/lmathlib.c src/external/lua/src/lobject.c src/external/lua/src/lparser.c src/external/lua/src/lstrlib.c src/external/lua/src/ltm.c src/external/lua/src/lvm.c src/external/glad/glad.c
--- a/build_web.sh
+++ b/build_web.sh
@@ -0,0 +1,64 @@
+#!/usr/bin/bash
+
+mkdir build
+cd build
+
+if [ ! -f "metaprogram.exe" ]; then
+    clang ../src/metaprogram/metaprogram.cpp ../src/basic/unix.cpp -o metaprogram.exe \
+        -nostdlib++ -fno-exceptions -fdiagnostics-absolute-paths -g \
+        -Wno-writable-strings \
+        -I../src
+fi
+./metaprogram.exe
+
+emcc -o ../text_editor.html \
+    -nostdlib++ -fno-exceptions -fdiagnostics-absolute-paths -g -gsource-map \
+    --shell-file=../data/shell.html\
+    $profile_flags \
+    -Wno-writable-strings \
+    -I../src/external/SDL/include \
+    -I../src/external/lua/src \
+    -I../src/external/glad \
+    -I../src/ \
+    -L../src/external/SDL/build_web \
+    -lm \
+    -lSDL3 \
+    -s ALLOW_MEMORY_GROWTH=1 -s MAXIMUM_MEMORY=1gb -msimd128 -s TOTAL_STACK=5MB -s INITIAL_MEMORY=256mb \
+    ../src/text_editor/text_editor.cpp \
+    ../src/basic/unix.cpp \
+    ../src/external/lua/src/lbaselib.c \
+    ../src/external/lua/src/lctype.c \
+    ../src/external/lua/src/ldo.c \
+    ../src/external/lua/src/lgc.c \
+    ../src/external/lua/src/liolib.c \
+    ../src/external/lua/src/lmem.c \
+    ../src/external/lua/src/lopcodes.c \
+    ../src/external/lua/src/lstate.c \
+    ../src/external/lua/src/ltable.c \
+    ../src/external/lua/src/lundump.c \
+    ../src/external/lua/src/lzio.c \
+    ../src/external/lua/src/lapi.c \
+    ../src/external/lua/src/lcode.c \
+    ../src/external/lua/src/ldblib.c \
+    ../src/external/lua/src/ldump.c \
+    ../src/external/lua/src/llex.c \
+    ../src/external/lua/src/loadlib.c \
+    ../src/external/lua/src/loslib.c \
+    ../src/external/lua/src/lstring.c \
+    ../src/external/lua/src/ltablib.c \
+    ../src/external/lua/src/lutf8lib.c \
+    ../src/external/lua/src/lauxlib.c \
+    ../src/external/lua/src/lcorolib.c \
+    ../src/external/lua/src/ldebug.c \
+    ../src/external/lua/src/lfunc.c \
+    ../src/external/lua/src/linit.c \
+    ../src/external/lua/src/lmathlib.c \
+    ../src/external/lua/src/lobject.c \
+    ../src/external/lua/src/lparser.c \
+    ../src/external/lua/src/lstrlib.c \
+    ../src/external/lua/src/ltm.c \
+    ../src/external/lua/src/lvm.c \
+    ../src/external/glad/glad.c \
+
+
+cd ..
--- a/data/shell.html
+++ b/data/shell.html
@@ -0,0 +1,42 @@
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
+    <title>Emscripten-Generated Code</title>
+    <style>
+        body { margin: 0; background-color: black }
+        .game {
+            position: absolute;
+            top: 0px;
+            left: 0px;
+            margin: 0px;
+            border: 0;
+            width: 100%;
+            height: 100%;
+            overflow: hidden;
+            display: block;
+            image-rendering: optimizeSpeed;
+            image-rendering: -moz-crisp-edges;
+            image-rendering: -o-crisp-edges;
+            image-rendering: -webkit-optimize-contrast;
+            image-rendering: optimize-contrast;
+            image-rendering: crisp-edges;
+            image-rendering: pixelated;
+            -ms-interpolation-mode: nearest-neighbor;
+        }
+    </style>
+  </head>
+  <body>
+    <canvas id="canvas" oncontextmenu="event.preventDefault()"></canvas>
+    <script type='text/javascript'>
+      var Module = {
+        preRun: [],
+        print: (...args) => console.log('[stdout]: ' + args.join(' ')),
+        printErr: (...args) => console.log('[stderr]: ' + args.join(' ')),
+      };
+      window.onerror = (event) => console.log('[onerror]: ' + event.message);
+    </script>
+    {{{ SCRIPT }}}
+  </body>
+</html>
--- a/src/basic/wasm.cpp
+++ b/src/basic/wasm.cpp
@@ -0,0 +1,262 @@
+#include "filesystem.h"
+#include <dirent.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <spawn.h>
+#include <poll.h>
+#include <emscripten.h>
+#define PATH_MAX 1024
+
+EM_JS(void, JS_Breakpoint, (), {
+    debugger;
+})
+
+void (*Error)(const char *, ...);
+
+void *VReserve(size_t size) {
+    InvalidCodepath();
+    return NULL;
+}
+
+bool VCommit(void *p, size_t size) {
+    InvalidCodepath();
+    return false;
+}
+
+bool VRelease(void *p, size_t size) {
+    InvalidCodepath();
+    return false;
+}
+
+bool VDecommit(void *p, size_t size) {
+    InvalidCodepath();
+    return false;
+}
+
+void InitOS(void (*error_proc)(const char *, ...)) {
+    Error = error_proc;
+}
+
+String ReadFile(Allocator al, String path) {
+    Scratch scratch(al);
+    String null_term = Copy(scratch, path);
+    String result = {};
+    FILE *f = fopen(null_term.data, "rb");
+    if (f) {
+        fseek(f, 0, SEEK_END);
+        result.len = ftell(f);
+        fseek(f, 0, SEEK_SET);
+
+        result.data = (char *)AllocSize(al, result.len + 1);
+        fread(result.data, result.len, 1, f);
+        result.data[result.len] = 0;
+
+        fclose(f);
+    }
+    return result;
+}
+
+bool WriteFile(String path, String data) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    bool result = false;
+    FILE *f = fopen((const char *)null_term.data, "w");
+    if (f) {
+        size_t written = fwrite(data.data, 1, data.len, f);
+        if (written == data.len) {
+            result = true;
+        }
+        fclose(f);
+    }
+    return result;
+}
+
+bool DeleteFile(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    int result = unlink(null_term.data);
+    return result == 0;
+}
+
+MakeDirResult MakeDir(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    int error = mkdir(null_term.data, 0755);
+    MakeDirResult result = MakeDirResult_Success;
+    if (error != 0) {
+        result = MakeDirResult_ErrorOther;
+        if (errno == EEXIST) result = MakeDirResult_Exists;
+    }
+    return result;
+}
+
+int64_t GetFileModTime(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    struct stat attrib = {};
+    stat(null_term.data, &attrib);
+    struct timespec ts = attrib.st_mtim;
+    int64_t result = (((int64_t)ts.tv_sec) * 1000000ll) + ((int64_t)ts.tv_nsec) / 1000ll;
+    return result;
+}
+
+String GetAbsolutePath(Allocator al, String path) {
+    return path;
+}
+
+bool FileExists(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    bool result = false;
+    if (access((char *)null_term.data, F_OK) == 0) {
+        result = true;
+    }
+    return result;
+}
+
+bool IsDir(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    struct stat s;
+    if (stat(null_term.data, &s) != 0)
+        return false;
+    return S_ISDIR(s.st_mode);
+}
+
+bool IsFile(String path) {
+    Scratch scratch;
+    String null_term = Copy(scratch, path);
+    struct stat s;
+    if (stat(null_term.data, &s) != 0)
+        return false;
+    return S_ISREG(s.st_mode);
+}
+
+bool IsAbsolute(String path) {
+    bool result = path.len && path.data[0] == '/';
+    return result;
+}
+
+String GetWorkingDir(Allocator al) {
+    char *buffer = AllocArray(al, char, PATH_MAX);
+    char *cwd = getcwd(buffer, PATH_MAX);
+    return cwd;
+}
+
+String GetExePath(Allocator al) {
+    return "/text_editor";
+}
+
+String GetExeDir(Allocator al) {
+    Scratch scratch(al);
+    String exe_path = GetExePath(scratch);
+    String dir = ChopLastSlash(exe_path);
+    String result = Copy(al, dir);
+    return result;
+}
+
+double get_time_in_micros(void) {
+    struct timespec spec;
+    clock_gettime(CLOCK_MONOTONIC, &spec);
+    return (((double)spec.tv_sec) * 1000000) + (((double)spec.tv_nsec) / 1000);
+}
+
+bool IsValid(const FileIter &it) {
+    return it.is_valid;
+}
+
+void Advance(FileIter *it) {
+    struct dirent *file = NULL;
+    while ((file = readdir((DIR *)it->dir)) != NULL) {
+        if (file->d_name[0] == '.' && file->d_name[1] == '.' && file->d_name[2] == 0) {
+            continue;
+        }
+        if (file->d_name[0] == '.' && file->d_name[1] == 0) {
+            continue;
+        }
+
+        it->is_directory = file->d_type == DT_DIR;
+        it->filename = Copy(it->allocator, file->d_name);
+
+        const char *dir_char_ending = it->is_directory ? "/" : "";
+        const char *separator = it->path.data[it->path.len - 1] == '/' ? "" : "/";
+        it->relative_path = Format(it->allocator, "%.*s%s%s%s", FmtString(it->path), separator, file->d_name, dir_char_ending);
+        it->absolute_path = GetAbsolutePath(it->allocator, it->relative_path);
+        if (it->is_directory) it->absolute_path = Format(it->allocator, "%.*s/", FmtString(it->absolute_path));
+        it->is_valid = true;
+        return;
+    }
+    it->is_valid = false;
+    closedir((DIR *)it->dir);
+}
+
+FileIter IterateFiles(Allocator alo, String path) {
+    FileIter it = {};
+    it.allocator = alo;
+    it.path = path;
+    Scratch scratch(alo);
+    String null_term = Copy(scratch, path);
+    it.dir = (void *)opendir((char *)null_term.data);
+    if (it.dir) {
+        Advance(&it);
+    }
+    return it;
+}
+
+Array<char *> SplitCommand(Allocator allocator, String command_line) {
+    Array<char *> cmd = {allocator};
+
+    String curr = {};
+    for (int i = 0; i < command_line.len; i += 1) {
+        if (command_line.data[i] == ' ') {
+            if (curr.len > 0) {
+                Add(&cmd, Copy(allocator, curr).data);
+                curr = {};
+            }
+            continue;
+        }
+        if (curr.len == 0) {
+            curr.data = command_line.data + i;
+        }
+        curr.len += 1;
+    }
+
+    if (curr.len > 0) {
+        Add(&cmd, Copy(allocator, curr).data);
+    }
+
+    return cmd;
+}
+
+Process SpawnProcess(String command_line, String working_dir, String write_stdin, Array<String> enviroment) {
+    return {};
+}
+
+bool IsValid(Process *process) {
+    return false;
+}
+
+void KillProcess(Process *process) {
+
+}
+
+String PollStdout(Allocator allocator, Process *process, bool force_read) {
+    return {};
+}
+
+void WriteStdin(Process *process, String string) {
+    return;
+}
+
+void CloseStdin(Process *process) {
+    return;
+}