Remove Gleam and convert encoding module to pure Elixir

- Convert Gleam encoding module to Elixir implementation
- Remove all Gleam dependencies from mix.exs
- Remove Gleam configuration files (gleam.toml, src directory)
- Update Dockerfile to remove mix_gleam installation
- Update EncodingUtils to use Elixir module instead of Gleam
- Remove Gleam references from documentation
- Clean up all Gleam-related build configuration

This simplifies the build process and removes the compilation issues
that were preventing successful Docker builds.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Graham McIntire 2025-07-27 11:05:24 -05:00
parent 07b22054af
commit 865fc90871
No known key found for this signature in database
13 changed files with 188 additions and 584 deletions

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@ -8,7 +8,6 @@ Before setting up the project, ensure you have the following installed:
- Elixir 1.17+
- Erlang/OTP
- PostgreSQL with PostGIS extension
- **Gleam** (required for Gleam modules) - Install from https://gleam.run/getting-started/installing/
## Project Overview
@ -17,8 +16,7 @@ This is an Elixir Phoenix LiveView application that serves as a real-time APRS (
## Development Commands
### Setup
- `mix archive.install hex mix_gleam --force` - Install mix_gleam archive (required first step)
- `mix setup` - Complete project setup (deps.get + ecto.setup + gleam compilation)
- `mix setup` - Complete project setup (deps.get + ecto.setup)
- `mix deps.get` - Install dependencies
- `mix ecto.setup` - Create database, run migrations, and seed data
- `mix ecto.reset` - Drop and recreate database
@ -67,7 +65,6 @@ This is an Elixir Phoenix LiveView application that serves as a real-time APRS (
- Oban for background job processing
- GenStage for packet processing pipelines
- Tailwind CSS + ESBuild for frontend assets (no Node.js)
- Gleam for additional type-safe modules (requires mix_gleam archive)
## Test-Driven Development

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@ -18,8 +18,7 @@ WORKDIR /app
# Install hex + rebar
RUN mix local.hex --force && \
mix local.rebar --force && \
mix archive.install hex mix_gleam 0.6.2 --force
mix local.rebar --force
ENV MIX_ENV=prod
@ -32,8 +31,6 @@ RUN mix deps.get --only $MIX_ENV && \
# Copy and compile application
COPY config config
COPY lib lib
COPY src src
COPY gleam.toml ./
COPY assets assets
COPY priv priv
COPY rel rel

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@ -1,85 +0,0 @@
# Gleam Integration Guide
This document describes how Gleam has been integrated into the APRS.me Elixir project.
## Setup
1. **Mix Gleam Archive**: Installed via `mix archive.install hex mix_gleam`
2. **Dependencies**: Added to mix.exs:
```elixir
{:gleam_stdlib, ">= 0.60.0 and < 1.0.0", app: false, override: true},
{:gleeunit, "~> 1.0", only: [:dev, :test], runtime: false, app: false}
```
3. **Project Configuration**: Added to mix.exs project config:
```elixir
archives: [mix_gleam: "~> 0.6"],
erlc_paths: ["build/dev/erlang/aprsme/_gleam_artefacts", "src"],
erlc_include_path: "build/dev/erlang/aprsme/include",
```
## File Structure
- `/src/` - Gleam source files
- `/src/aprs/` - APRS-specific Gleam modules
- `/gleam.toml` - Gleam project configuration
## Compilation
The project is configured to automatically compile Gleam code when running tests or compiling:
```bash
# For development
mix compile.gleam && mix compile
# For tests (automatically compiles Gleam)
mix test
# Manual compilation if needed
mix gleam_compile
```
The custom `gleam_compile` task handles:
- Running the mix_gleam compiler when available
- Falling back to the `gleam` binary if mix_gleam isn't installed
- Copying compiled beam files to the appropriate build directory
## Module Naming
Gleam modules are compiled with `@` as the separator in BEAM files:
- Gleam: `aprs/encoding`
- BEAM: `aprs@encoding`
- Elixir: `:aprs@encoding`
## Current Modules
### encoding.gleam
A type-safe implementation of encoding utilities:
- `sanitize_string/1` - Ensures strings are valid UTF-8, handles Latin-1 conversion
- `to_float_safe/1` - Safe string to float conversion with Option type
- `to_hex/1` - Convert binary to hex string representation
- `has_weather_data/4` - Check if packet contains weather data
- `encoding_info/1` - Get encoding information about a binary
## Elixir Integration
The `Aprsme.EncodingUtils` module now wraps the Gleam implementation, replacing the original pure Elixir version. The Gleam implementation provides:
- Type-safe string sanitization with Latin-1 to UTF-8 conversion
- Proper handling of control characters
- Safe float conversion with bounds checking
- Consistent encoding validation
The migration was completed with all tests passing and no breaking changes to the API.
## Testing
The original test suite at `/test/aprsme/encoding_utils_test.exs` continues to work with the Gleam implementation:
```bash
mix test test/aprsme/encoding_utils_test.exs
```
## Future Considerations
1. Add Gleam compiler to Mix.compilers() once the integration is more stable
2. Consider migrating more type-critical modules to Gleam
3. Explore using Gleam's type system for packet validation

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@ -6,17 +6,11 @@ Before setting up the project, ensure you have the following installed:
- Elixir 1.17+
- Erlang/OTP
- PostgreSQL with PostGIS extension
- **Gleam** - Required for Gleam modules. Install from https://gleam.run/getting-started/installing/
- If using asdf: `asdf install` (will use versions from .tool-versions)
## Setup
To start your Phoenix server:
* First install the mix_gleam archive:
```bash
mix archive.install hex mix_gleam --force
```
* Run the complete setup:
```bash
mix setup

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@ -1,10 +0,0 @@
name = "aprsme"
version = "0.2.0"
description = "APRS packet display with type-safe Gleam modules"
licences = ["GPL-2.0"]
[dependencies]
gleam_stdlib = ">= 0.60.0 and < 1.0.0"
[dev-dependencies]
gleeunit = "~> 1.0"

170
lib/aprsme/encoding.ex Normal file
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@ -0,0 +1,170 @@
defmodule Aprsme.Encoding do
@moduledoc """
Encoding utilities for handling APRS packet data.
Provides functions for sanitizing strings, converting encodings,
and validating data.
"""
@doc """
Sanitizes a binary to ensure it can be safely JSON encoded.
Handles latin1 conversion and removes control characters.
"""
def sanitize_string(input) when is_binary(input) do
input
|> try_utf8_conversion()
|> clean_control_characters()
end
def sanitize_string(_), do: ""
@doc """
Type-safe float conversion with validation
"""
def to_float_safe(value) when is_binary(value) do
sanitized = value
|> String.trim()
|> String.slice(0, 30) # Reasonable max length for a number
case Float.parse(sanitized) do
{f, _} when f > -9.0e15 and f < 9.0e15 ->
{:ok, f}
_ ->
nil
end
end
def to_float_safe(_), do: nil
@doc """
Convert binary to hex string
"""
def to_hex(input) when is_binary(input) do
Base.encode16(input)
end
def to_hex(_), do: ""
@doc """
Check if a value looks like it has weather data
"""
def has_weather_data(temperature, humidity, wind_speed, pressure) do
not is_nil(temperature) or
not is_nil(humidity) or
not is_nil(wind_speed) or
not is_nil(pressure)
end
@doc """
Get encoding information about a binary
"""
def encoding_info(input) when is_binary(input) do
byte_count = byte_size(input)
case String.valid?(input) do
true ->
%{
valid_utf8: true,
byte_count: byte_count,
char_count: String.length(input),
invalid_at: nil
}
false ->
invalid_pos = find_invalid_byte_position(input)
%{
valid_utf8: false,
byte_count: byte_count,
char_count: nil,
invalid_at: invalid_pos
}
end
end
def encoding_info(_) do
%{
valid_utf8: false,
byte_count: 0,
char_count: nil,
invalid_at: nil
}
end
# Private functions
defp try_utf8_conversion(input) do
if String.valid?(input) do
input
else
# Try latin1 to UTF-8 conversion
latin1_to_utf8(input)
end
end
defp latin1_to_utf8(input) do
try do
input
|> :binary.bin_to_list()
|> Enum.map(&latin1_char_to_utf8/1)
|> IO.iodata_to_binary()
rescue
_ -> ""
end
end
defp latin1_char_to_utf8(byte) when byte <= 127 do
<<byte>>
end
defp latin1_char_to_utf8(byte) do
# For Latin1, values 128-255 map to Unicode U+0080 to U+00FF
# In UTF-8, these become 2-byte sequences: 110xxxxx 10xxxxxx
<<0xC0 + div(byte, 64), 0x80 + rem(byte, 64)>>
end
defp clean_control_characters(s) do
s
|> String.graphemes()
|> Enum.filter(&valid_grapheme?/1)
|> Enum.join()
|> String.trim()
end
defp valid_grapheme?(grapheme) do
case String.to_charlist(grapheme) do
[cp] ->
# Allow tab (0x09), newline (0x0A), carriage return (0x0D)
# Remove other control characters
case cp do
9 -> true
10 -> true
13 -> true
c when c >= 0 and c <= 31 -> false
127 -> false
c when c >= 128 and c <= 159 -> false
_ -> true
end
_ ->
# Multi-codepoint grapheme, keep it
true
end
end
defp find_invalid_byte_position(input) do
input
|> :binary.bin_to_list()
|> Enum.with_index()
|> Enum.find_value(fn {byte, index} ->
if byte > 127 and not valid_utf8_continuation?(input, index) do
index
end
end)
end
defp valid_utf8_continuation?(binary, pos) do
try do
<<_::binary-size(pos), char::utf8, _::binary>> = binary
true
rescue
_ -> false
end
end
end

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@ -1,19 +1,12 @@
defmodule Aprsme.EncodingUtils do
@moduledoc """
Elixir wrapper for the Gleam encoding utilities.
Provides a compatible API with the original EncodingUtils module.
Encoding utilities for handling APRS packet data.
Provides functions for sanitizing strings, converting encodings,
and validating data.
"""
alias Aprs.Types.MicE
# The Gleam module is compiled with @ separator in the beam name
@gleam_module :aprsme@encoding
# Optional compile-time check to suppress warnings
@compile {:no_warn_undefined, {@gleam_module, :sanitize_string, 1}}
@compile {:no_warn_undefined, {@gleam_module, :to_float_safe, 1}}
@compile {:no_warn_undefined, {@gleam_module, :to_hex, 1}}
@compile {:no_warn_undefined, {@gleam_module, :encoding_info, 1}}
alias Aprsme.Encoding
@doc """
Sanitizes a binary to ensure it can be safely JSON encoded.
@ -32,7 +25,7 @@ defmodule Aprsme.EncodingUtils do
"""
@spec sanitize_string(binary() | nil | any()) :: binary() | nil | any()
def sanitize_string(binary) when is_binary(binary) do
@gleam_module.sanitize_string(binary)
Encoding.sanitize_string(binary)
end
def sanitize_string(nil), do: nil
@ -69,9 +62,9 @@ defmodule Aprsme.EncodingUtils do
# Sanitize and use Gleam's safe conversion
sanitized = value |> sanitize_string() |> to_string()
case @gleam_module.to_float_safe(sanitized) do
{:some, f} -> f
:none -> nil
case Encoding.to_float_safe(sanitized) do
{:ok, f} -> f
nil -> nil
end
end
@ -339,7 +332,7 @@ defmodule Aprsme.EncodingUtils do
"""
@spec to_hex(binary()) :: String.t()
def to_hex(binary) when is_binary(binary) do
@gleam_module.to_hex(binary)
Encoding.to_hex(binary)
end
@doc """
@ -354,27 +347,6 @@ defmodule Aprsme.EncodingUtils do
"""
@spec encoding_info(binary()) :: map()
def encoding_info(binary) when is_binary(binary) do
# Call Gleam function and convert the result
case @gleam_module.encoding_info(binary) do
{:encoding_info, valid_utf8, byte_count, char_count, invalid_at} ->
base = %{
valid_utf8: valid_utf8,
byte_count: byte_count
}
base
|> maybe_add_field(:char_count, char_count)
|> maybe_add_field(:invalid_at, invalid_at)
_ ->
# Fallback
%{
valid_utf8: String.valid?(binary),
byte_count: byte_size(binary)
}
end
Encoding.encoding_info(binary)
end
defp maybe_add_field(map, _key, :none), do: map
defp maybe_add_field(map, key, {:some, value}), do: Map.put(map, key, value)
end

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@ -1,154 +0,0 @@
defmodule Mix.Tasks.GleamCompile do
@shortdoc "Compiles Gleam files and copies them to the correct location"
@moduledoc false
use Mix.Task
def run(_args) do
env = Mix.env()
# Check if compile.gleam task exists
task_exists = Code.ensure_loaded?(Mix.Tasks.Compile.Gleam)
if task_exists do
# First run the gleam compiler
Mix.Task.run("compile.gleam")
# Ensure output directory exists
ebin_dir = "_build/#{env}/lib/aprsme/ebin"
File.mkdir_p!(ebin_dir)
# Copy beam files from Gleam build to Elixir build
gleam_output = "build/#{env}/erlang/aprsme/_gleam_artefacts"
if File.exists?(gleam_output) do
gleam_output
|> File.ls!()
|> Enum.filter(&String.ends_with?(&1, ".beam"))
|> Enum.each(fn beam_file ->
src = Path.join(gleam_output, beam_file)
dest = Path.join(ebin_dir, beam_file)
File.copy!(src, dest)
Mix.shell().info("Copied #{beam_file}")
end)
end
else
Mix.shell().info("Gleam compiler not available, compiling manually")
# Compile Gleam files manually using gleam binary if available
if System.find_executable("gleam") do
Mix.shell().info("Found gleam binary, compiling...")
{output, _exit_code} = System.cmd("gleam", ["build"], cd: File.cwd!())
Mix.shell().info(output)
# Copy from gleam build to elixir build
# Gleam always builds to dev directory regardless of MIX_ENV
# The compiled files go to the project's ebin directory
gleam_output = "build/dev/erlang/aprsme/ebin"
ebin_dir = "_build/#{env}/lib/aprsme/ebin"
File.mkdir_p!(ebin_dir)
# First, check if compile.gleam already created the aprsme@encoding.beam
dev_ebin = "_build/dev/lib/aprsme/ebin"
if File.exists?(Path.join(dev_ebin, "aprsme@encoding.beam")) do
Mix.shell().info("Found pre-compiled aprsme@encoding.beam")
src = Path.join(dev_ebin, "aprsme@encoding.beam")
dest = Path.join(ebin_dir, "aprsme@encoding.beam")
File.copy!(src, dest)
Mix.shell().info("Copied aprsme@encoding.beam to test build")
end
if File.exists?(gleam_output) do
Mix.shell().info("Checking #{gleam_output} for beam files...")
beam_files =
gleam_output
|> File.ls!()
|> Enum.filter(&String.ends_with?(&1, ".beam"))
Mix.shell().info("Found #{length(beam_files)} beam files")
Enum.each(beam_files, fn beam_file ->
src = Path.join(gleam_output, beam_file)
dest = Path.join(ebin_dir, beam_file)
File.copy!(src, dest)
Mix.shell().info("Copied #{beam_file} to #{dest}")
end)
else
Mix.shell().info("Gleam output directory #{gleam_output} does not exist")
end
# Also copy Gleam stdlib files
gleam_stdlib_dir = "build/dev/erlang/gleam_stdlib/ebin"
if File.exists?(gleam_stdlib_dir) do
Mix.shell().info("Copying Gleam stdlib files...")
gleam_stdlib_dir
|> File.ls!()
|> Enum.filter(&String.ends_with?(&1, ".beam"))
|> Enum.each(fn beam_file ->
src = Path.join(gleam_stdlib_dir, beam_file)
dest = Path.join(ebin_dir, beam_file)
File.copy!(src, dest)
end)
Mix.shell().info("Copied Gleam stdlib files")
end
else
# Last resort: Check for pre-compiled BEAM files in priv/gleam
Mix.shell().info("No Gleam compiler available, checking for pre-compiled BEAM files...")
priv_gleam = "priv/gleam"
ebin_dir = "_build/#{env}/lib/aprsme/ebin"
if File.exists?(priv_gleam) do
File.mkdir_p!(ebin_dir)
# Copy all Gleam-related BEAM files
priv_gleam
|> File.ls!()
|> Enum.filter(fn file ->
String.ends_with?(file, ".beam") and
(String.starts_with?(file, "gleam") or String.starts_with?(file, "aprsme@"))
end)
|> Enum.each(fn beam_file ->
src = Path.join(priv_gleam, beam_file)
dest = Path.join(ebin_dir, beam_file)
File.copy!(src, dest)
Mix.shell().info("Copied pre-compiled #{beam_file} from priv/gleam")
end)
# Check if we got the main module
if not File.exists?(Path.join(ebin_dir, "aprsme@encoding.beam")) do
Mix.shell().error("Pre-compiled aprsme@encoding.beam not found in priv/gleam")
end
else
# Try to copy from dev build if available
dev_ebin = "_build/dev/lib/aprsme/ebin"
if File.exists?(dev_ebin) and env != :dev do
File.mkdir_p!(ebin_dir)
dev_ebin
|> File.ls!()
|> Enum.filter(&String.starts_with?(&1, "aprsme@"))
|> Enum.each(fn beam_file ->
src = Path.join(dev_ebin, beam_file)
dest = Path.join(ebin_dir, beam_file)
File.copy!(src, dest)
Mix.shell().info("Copied #{beam_file} from dev build")
end)
else
Mix.shell().error(
"Unable to find Gleam compiled files. Please ensure Gleam code is compiled before deployment."
)
end
end
end
end
:ok
end
end

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@ -1,28 +0,0 @@
defmodule Mix.Tasks.SetupGleam do
@shortdoc "Installs mix_gleam archive if not already installed"
@moduledoc false
use Mix.Task
def run(_) do
if archive_installed?() do
Mix.shell().info("mix_gleam archive already installed")
else
Mix.shell().info("Installing mix_gleam archive...")
# Use System.cmd to avoid Mix dependency issues
{_, 0} = System.cmd("mix", ["archive.install", "hex", "mix_gleam", "--force"])
end
end
defp archive_installed? do
archives_path = Path.join([Mix.Utils.mix_home(), "archives"])
if File.exists?(archives_path) do
archives_path
|> File.ls!()
|> Enum.any?(&String.starts_with?(&1, "mix_gleam"))
else
false
end
end
end

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@ -1,11 +0,0 @@
# This file was generated by Gleam
# You typically do not need to edit this file
packages = [
{ name = "gleam_stdlib", version = "0.62.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "DC8872BC0B8550F6E22F0F698CFE7F1E4BDA7312FDEB40D6C3F44C5B706C8310" },
{ name = "gleeunit", version = "1.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "63022D81C12C17B7F1A60E029964E830A4CBD846BBC6740004FC1F1031AE0326" },
]
[requirements]
gleam_stdlib = { version = ">= 0.60.0 and < 1.0.0" }
gleeunit = { version = "~> 1.0" }

36
mix.exs
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@ -6,7 +6,7 @@ defmodule Aprsme.MixProject do
app: :aprsme,
version: "0.2.0",
elixir: "~> 1.17",
archives: [mix_gleam: "~> 0.6"],
archives: [],
compilers: Mix.compilers(),
elixirc_paths: elixirc_paths(Mix.env()),
erlc_paths: erlc_paths(Mix.env()),
@ -23,7 +23,7 @@ defmodule Aprsme.MixProject do
],
releases: [
aprsme: [
steps: [:assemble, &copy_gleam_files/1]
steps: [:assemble]
]
]
]
@ -54,11 +54,6 @@ defmodule Aprsme.MixProject do
defp elixirc_paths(:test), do: ["lib", "test/support"]
defp elixirc_paths(_), do: ["lib"]
# Specifies erlc paths per environment for Gleam compilation
defp erlc_paths(_env) do
# Only include src directory to avoid compiling Gleam's internal scripts
["src"]
end
# Specifies your project dependencies.
#
@ -116,7 +111,6 @@ defmodule Aprsme.MixProject do
{:gettext_pseudolocalize, "~> 0.1"},
{:sentry, "~> 11.0"},
# Gleam dependencies
{:gleam_stdlib, ">= 0.60.0 and < 1.0.0", app: false, compile: false, override: true},
{:gleeunit, "~> 1.0", only: [:dev, :test], runtime: false, app: false, compile: false}
]
end
@ -129,11 +123,11 @@ defmodule Aprsme.MixProject do
# See the documentation for `Mix` for more info on aliases.
defp aliases do
[
setup: ["setup_gleam", "deps.get", "ecto.setup", "gleam_compile"],
compile: ["gleam_compile", "compile"],
setup: ["deps.get", "ecto.setup"],
compile: ["compile"],
"ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
"ecto.reset": ["ecto.drop", "ecto.setup"],
test: ["gleam_compile", "ecto.create --quiet", "ecto.migrate --quiet", "test"],
test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"],
"assets.deploy": [
"tailwind default --minify",
"esbuild vendor",
@ -158,24 +152,4 @@ defmodule Aprsme.MixProject do
end
# Copy Gleam BEAM files to the release
defp copy_gleam_files(release) do
app_dir = Path.join([release.path, "lib", "aprsme-#{release.version}", "ebin"])
File.mkdir_p!(app_dir)
# Copy from priv/gleam if available
priv_gleam = "priv/gleam"
if File.exists?(priv_gleam) do
priv_gleam
|> File.ls!()
|> Enum.filter(&String.ends_with?(&1, ".beam"))
|> Enum.each(fn beam_file ->
src = Path.join(priv_gleam, beam_file)
dest = Path.join(app_dir, beam_file)
File.copy!(src, dest)
end)
end
release
end
end

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@ -1,212 +0,0 @@
import gleam/string
import gleam/list
import gleam/option.{type Option, None, Some}
import gleam/int
import gleam/float
import gleam/bit_array
/// Sanitizes a binary to ensure it can be safely JSON encoded
/// Handles latin1 conversion and removes control characters
pub fn sanitize_string(input: BitArray) -> String {
// First try direct UTF-8 conversion
case bit_array.to_string(input) {
Ok(s) -> clean_control_characters(s)
Error(_) -> {
// Try latin1 to UTF-8 conversion
input
|> latin1_to_utf8_string
|> clean_control_characters
}
}
}
/// Convert BitArray to list of bytes
fn bit_array_to_list(input: BitArray) -> List(Int) {
do_bit_array_to_list(input, [])
|> list.reverse
}
fn do_bit_array_to_list(input: BitArray, acc: List(Int)) -> List(Int) {
case bit_array.byte_size(input) {
0 -> acc
_ -> {
case bit_array.slice(input, at: 0, take: 1) {
Ok(<<byte>>) -> {
case bit_array.slice(input, at: 1, take: bit_array.byte_size(input) - 1) {
Ok(rest) -> do_bit_array_to_list(rest, [byte, ..acc])
Error(_) -> [byte, ..acc]
}
}
_ -> acc
}
}
}
}
/// Convert latin1 encoded bytes to UTF-8 string
fn latin1_to_utf8_string(input: BitArray) -> String {
input
|> bit_array_to_list
|> list.filter_map(fn(byte) {
case byte {
// ASCII range (0-127) maps directly
b if b <= 127 -> {
case bit_array.to_string(<<b>>) {
Ok(s) -> Ok(s)
Error(_) -> Error(Nil)
}
}
// Latin1 range (128-255) needs UTF-8 encoding
b -> {
// For Latin1, values 128-255 map to Unicode U+0080 to U+00FF
// In UTF-8, these become 2-byte sequences: 110xxxxx 10xxxxxx
let byte1 = 192 + b / 64 // 192 = 0xC0, equivalent to b >>> 6
let byte2 = 128 + b % 64 // 128 = 0x80, equivalent to b & 0x3F
case bit_array.to_string(<<byte1, byte2>>) {
Ok(s) -> Ok(s)
Error(_) -> Error(Nil)
}
}
}
})
|> string.join("")
}
/// Remove control characters from a string
fn clean_control_characters(s: String) -> String {
s
|> string.to_graphemes
|> list.filter(fn(grapheme) {
case string.to_utf_codepoints(grapheme) {
[codepoint] -> {
let cp = string.utf_codepoint_to_int(codepoint)
// Allow tab (0x09), newline (0x0A), carriage return (0x0D)
// Remove other control characters
case cp {
9 -> True
10 -> True
13 -> True
c if c >= 0 && c <= 31 -> False
127 -> False
c if c >= 128 && c <= 159 -> False
_ -> True
}
}
_ -> True // Multi-codepoint grapheme, keep it
}
})
|> string.join("")
|> string.trim
}
/// Type-safe float conversion with validation
pub fn to_float_safe(value: String) -> Option(Float) {
let sanitized = value
|> string.trim
|> string.slice(0, 30) // Reasonable max length for a number
case float.parse(sanitized) {
Ok(f) -> {
// Check for reasonable bounds
case f {
x if x >. -9.0e15 && x <. 9.0e15 -> Some(f)
_ -> None
}
}
Error(_) -> None
}
}
/// Convert binary to hex string
pub fn to_hex(input: BitArray) -> String {
do_to_hex(input, [])
|> list.reverse
|> string.join("")
|> string.uppercase
}
fn do_to_hex(input: BitArray, acc: List(String)) -> List(String) {
case bit_array.slice(input, at: 0, take: 1) {
Ok(<<byte>>) -> {
let rest = case bit_array.slice(input, at: 1, take: bit_array.byte_size(input) - 1) {
Ok(r) -> r
Error(_) -> <<>>
}
let hex = int.to_base16(byte)
let padded = case string.length(hex) {
1 -> "0" <> hex
_ -> hex
}
do_to_hex(rest, [padded, ..acc])
}
_ -> acc
}
}
/// Check if a value looks like it has weather data
pub fn has_weather_data(temperature: Option(Float), humidity: Option(Float),
wind_speed: Option(Float), pressure: Option(Float)) -> Bool {
case temperature, humidity, wind_speed, pressure {
Some(_), _, _, _ -> True
_, Some(_), _, _ -> True
_, _, Some(_), _ -> True
_, _, _, Some(_) -> True
_, _, _, _ -> False
}
}
/// Encoding info for debugging
pub type EncodingInfo {
EncodingInfo(
valid_utf8: Bool,
byte_count: Int,
char_count: Option(Int),
invalid_at: Option(Int)
)
}
/// Get encoding information about a binary
pub fn encoding_info(input: BitArray) -> EncodingInfo {
let byte_count = bit_array.byte_size(input)
case bit_array.to_string(input) {
Ok(s) -> EncodingInfo(
valid_utf8: True,
byte_count: byte_count,
char_count: Some(string.length(s)),
invalid_at: None
)
Error(_) -> {
let invalid_pos = find_invalid_byte_position(input, 0)
EncodingInfo(
valid_utf8: False,
byte_count: byte_count,
char_count: None,
invalid_at: invalid_pos
)
}
}
}
fn find_invalid_byte_position(input: BitArray, pos: Int) -> Option(Int) {
case bit_array.byte_size(input) {
0 -> None
_ -> {
case bit_array.slice(input, at: 0, take: 1) {
Ok(byte_slice) -> {
case bit_array.to_string(byte_slice) {
Ok(_) -> {
case bit_array.slice(input, at: 1, take: bit_array.byte_size(input) - 1) {
Ok(rest) -> find_invalid_byte_position(rest, pos + 1)
Error(_) -> Some(pos)
}
}
Error(_) -> Some(pos)
}
}
Error(_) -> Some(pos)
}
}
}
}

View file

@ -1,7 +1,7 @@
#!/bin/bash
set -e
echo "Testing Docker build with Gleam support..."
echo "Testing Docker build..."
# Build the Docker image
echo "Building Docker image..."