matu3ba

Assuming MIN < x < MAX:

trick	operation/effect	note
x & (x - 1)	clear lowest 1 bit	if result 0, then x is 2
`x	(x + 1)`	set lowest 0 bit
`x	(x - 1)`	set all bits to right of lowest 1 bit
x & (x + 1)	clear all bits to right of lowest 0 bit
x & -x	extract lowest 1 bit
~x & (x + 1)	extract lowest 0 bit (as 1 bit)

matu3ba

diff --git a/lib/std/fs.zig b/lib/std/fs.zig
index 31354a278..f06db4943 100644
--- a/lib/std/fs.zig
+++ b/lib/std/fs.zig
@@ -2085,6 +2085,44 @@ pub const Dir = struct {
         }
     }
 
+    pub const CountStepsToFolderWithEntryError = error{
+        InvalidKind,

matu3ba

wasm2.c ──────►┌──────┐   ┌──────┐   ┌────┐   ┌──────┐   ┌────┐   ┌────┐   ┌────┐
               │wasm2c│──►│zig1.c│──►│zig1│──►│zig2.c│──►│zig2│──►│zig3│──►│zig4│
          ┌───►└──────┘ ┌►└──────┘┌─►└────┘   └──────┘┌─►└────┘   └────┘   └────┘
          │  zig1.wasm ─┘         │                   │     ▲        ▲        ▲
CC ───────┴───────────────────────┴───────────────────┘     │      binary-identical
                                                            │
idealized, see TODO:                                        │(optional)
used LLVM libs ─────────────────────►┌────┐                 │
 │LLVM│─────────────────┘

matu3ba

    /// Use this for additional posix spawn attributes.
    /// Do not set spawn attribute flags and do not modify stdin, stdout, stderr
    /// behavior, because those are set in the platform-specific spawn method.
    posix_attr: if (os.hasPosixSpawn) ?os.posix_spawn.Attr else void,
    posix_actions: if (os.hasPosixSpawn) ?os.posix_spawn.Actions else void,
            
            
    .posix_attr = if (os.hasPosixSpawn) null else undefined,
    .posix_actions = if (os.hasPosixSpawn) null else undefined,

matu3ba

#!/usr/bin/env sh
#sript to download chunklist streams videos

#ffmpeg -i "url_path_to_file.m3u8" -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 file.mp4
ffmpeg -i "uri/chunklist_somehash.m3u8" -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 file.mp4

matu3ba

# powershell script to parse devkit version and install Zig
# assume: 1. devkit in dir devkit, zig in dir zig in same dir
#         2. powershell scripts executable (execution in shell):
#         Get-Content bZig.ps1 | PowerShell.exe -noprofile -

# parse pip install
$draftpathninja = pip show ninja
$pathninja = $draftpathninja[7].Split(" ")[1]
$joinpath = -join($pathninja, "\ninja\data\bin")
$env:Path += $joinpath

matu3ba

$response = Invoke-RestMethod -Uri "https://ziglang.org/download/index.json"
$downloadlink = $response.master.'x86_64-windows'.tarball
Invoke-WebRequest -Uri "$downloadlink" -OutFile "$zigdl.zip"

# TODO finish this up

matu3ba

# powershell script to parse devkit version and install Zig
# assume: 1. devkit in dir devkit, zig in dir zig in same dir
#         2. cmake installed (download possible on https://cmake.org/download/)
#         3. ninja installed (pip install ninja) + in path
#         4. powershell scripts executable (execution in shell):
#         Get-Content bZig.ps1 | PowerShell.exe -noprofile -

## current error: 
#[10/21] Linking CXX static library zigcpp\libzigcpp.a
#FAILED: zigcpp/libzigcpp.a

matu3ba

#!/usr/bin/env sh

set -e
cd /mnt/c/Users/$USER/Desktop
## start get VERSION
cd zig
# alternative: curl https://github.com/ziglang/zig/blob/master/ci/x86_64-windows.ps1
raw_version=$(grep 'ZIG_LLVM_CLANG_LLD_NAME =' ci/x86_64-windows.ps1 | cut -f3-4 -d"-")
len_version=$(echo -n $raw_version | wc -m)
# cut " from string

matu3ba

#!/usr/bin/env sh
set -e
# git checkout release/15.x

# LLVM
cd llvm && mkdir -p build-deb15 && cd build-deb15
cmake .. -DLLVM_ENABLE_LIBEDIT=off -DCMAKE_INSTALL_PREFIX="${HOME}/local/llvm15deb" -DCMAKE_PREFIX_PATH="${HOME}/local/llvm15deb" -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_ENABLE_TERMINFO=OFF -G Ninja -DLLVM_PARALLEL_LINK_JOBS=1
ninja install
cd ../..