pipeline.mbt

///|
/// 批处理流水线 + 插件系统 + CLI 工具
///
/// v49.0.0: 生态建设
/// - Pipeline: 图像处理流水线（链式操作）
/// - Batch: 批量处理多个图像
/// - Plugin: 插件接口（自定义处理函数）
/// - CLI: 命令行参数解析和命令定义

///|
/// 处理操作类型
pub(all) enum Operation {
  Resize(Int, Int)
  Rotate(Double)
  FlipH
  FlipV
  Grayscale
  Invert
  Blur(Double)
  Sharpen(Double)
  Brightness(Double)
  Contrast(Double)
  Custom(String)
}

///|
/// 处理结果
pub struct ProcessResult {
  success : Bool
  message : String
  output_size : Int
}

///|
/// 流水线（链式操作序列）
pub struct Pipeline {
  operations : Array[Operation]
}

///|
/// 创建空流水线
pub fn pipeline_new() -> Pipeline {
  Pipeline::{ operations: [] }
}

///|
/// 添加操作到流水线
pub fn pipeline_add(p : Pipeline, op : Operation) -> Pipeline {
  p.operations.push(op)
  p
}

///|
/// 批量添加操作
pub fn pipeline_add_all(p : Pipeline, ops : Array[Operation]) -> Pipeline {
  for op in ops {
    p.operations.push(op)
  }
  p
}

///|
/// 获取流水线中的操作数量
pub fn pipeline_len(p : Pipeline) -> Int {
  p.operations.length()
}

///|
/// 流水线转字符串描述
pub fn pipeline_describe(p : Pipeline) -> String {
  let parts : Array[String] = []
  for op in p.operations {
    let desc = match op {
      Operation::Resize(w, h) => "resize(\{w}x\{h})"
      Operation::Rotate(angle) => "rotate(\{angle}°)"
      Operation::FlipH => "flip_h"
      Operation::FlipV => "flip_v"
      Operation::Grayscale => "grayscale"
      Operation::Invert => "invert"
      Operation::Blur(r) => "blur(\{r})"
      Operation::Sharpen(a) => "sharpen(\{a})"
      Operation::Brightness(v) => "brightness(\{v})"
      Operation::Contrast(v) => "contrast(\{v})"
      Operation::Custom(name) => "custom(\{name})"
    }
    parts.push(desc)
  }
  parts.join(" -> ")
}

///|
/// 批处理配置
pub(all) struct BatchConfig {
  input_format : String
  output_format : String
  output_suffix : String
  parallel : Bool
}

///|
/// 默认批处理配置
pub fn default_batch_config() -> BatchConfig {
  BatchConfig::{
    input_format: "auto",
    output_format: "png",
    output_suffix: "_processed",
    parallel: false,
  }
}

///|
/// 批处理任务
pub struct BatchTask {
  input_path : String
  output_path : String
  pipeline : Pipeline
}

///|
/// 创建批处理任务
pub fn batch_task(
  input_path : String,
  output_path : String,
  pipeline : Pipeline,
) -> BatchTask {
  BatchTask::{ input_path, output_path, pipeline }
}

///|
/// 批处理结果
pub struct BatchResult {
  total : Int
  succeeded : Int
  failed : Int
  results : Array[ProcessResult]
}

///|
/// 执行批处理（模拟）
///
/// 注意：实际文件 I/O 需要运行时支持，此处提供框架和结果统计。
pub fn batch_execute(tasks : Array[BatchTask]) -> BatchResult {
  let total = tasks.length()
  let mut succeeded = 0
  let mut failed = 0
  let results : Array[ProcessResult] = []
  for task in tasks {
    // 模拟处理：实际实现需要文件 I/O
    let success = task.pipeline.operations.length() >= 0
    if success {
      succeeded += 1
      results.push(ProcessResult::{
        success: true,
        message: "OK",
        output_size: 0,
      })
    } else {
      failed += 1
      results.push(ProcessResult::{
        success: false,
        message: "Failed",
        output_size: 0,
      })
    }
  }
  BatchResult::{ total, succeeded, failed, results }
}

///|
/// 批处理结果摘要
pub fn batch_summary(result : BatchResult) -> String {
  "Batch: \{result.succeeded}/\{result.total} succeeded, \{result.failed} failed"
}

///|
/// CLI 命令
pub(all) enum CliCommand {
  Convert(String, String)
  Resize(String, String, Int, Int)
  Rotate(String, String, Double)
  Batch(String, String, String)
  Info(String)
  Help
}

///|
/// CLI 参数解析
///
/// 解析命令行参数，返回对应的命令。
/// 支持的命令格式：
/// - convert <input> <output>
/// - resize <input> <output> <width> <height>
/// - rotate <input> <output> <angle>
/// - batch <input_dir> <output_dir> <pipeline_config>
/// - info <input>
/// - help
pub fn cli_parse(args : Array[String]) -> CliCommand {
  if args.length() == 0 {
    return CliCommand::Help
  }
  let cmd = args[0]
  if cmd == "convert" {
    if args.length() >= 3 {
      CliCommand::Convert(args[1], args[2])
    } else {
      CliCommand::Help
    }
  } else if cmd == "resize" {
    if args.length() >= 5 {
      CliCommand::Resize(
        args[1],
        args[2],
        parse_int(args[3]),
        parse_int(args[4]),
      )
    } else {
      CliCommand::Help
    }
  } else if cmd == "rotate" {
    if args.length() >= 4 {
      CliCommand::Rotate(args[1], args[2], parse_double(args[3]))
    } else {
      CliCommand::Help
    }
  } else if cmd == "batch" {
    if args.length() >= 4 {
      CliCommand::Batch(args[1], args[2], args[3])
    } else {
      CliCommand::Help
    }
  } else if cmd == "info" {
    if args.length() >= 2 {
      CliCommand::Info(args[1])
    } else {
      CliCommand::Help
    }
  } else if cmd == "help" {
    CliCommand::Help
  } else {
    CliCommand::Help
  }
}

///|
/// CLI 帮助文本
pub fn cli_help() -> String {
  "stb-image CLI\n" +
  "Usage:\n" +
  "  convert <input> <output>          Convert image format\n" +
  "  resize <input> <output> <w> <h>   Resize image\n" +
  "  rotate <input> <output> <angle>   Rotate image\n" +
  "  batch <input_dir> <output_dir> <config>  Batch process\n" +
  "  info <input>                      Show image info\n" +
  "  help                              Show this help"
}

///|
/// 简单的字符串转整数
fn parse_int(s : String) -> Int {
  let mut result = 0
  let mut sign = 1
  let mut i = 0
  let bytes = s.to_array()
  if bytes.length() > 0 && bytes[0] == '-' {
    sign = -1
    i = 1
  }
  while i < bytes.length() {
    let c = bytes[i].to_int()
    if c >= 0x30 && c <= 0x39 {
      result = result * 10 + (c - 0x30)
    }
    i += 1
  }
  result * sign
}

///|
/// 简单的字符串转浮点
fn parse_double(s : String) -> Double {
  let mut result = 0.0
  let mut sign = 1.0
  let mut i = 0
  let mut decimal = false
  let mut divisor = 10.0
  let bytes = s.to_array()
  if bytes.length() > 0 && bytes[0] == '-' {
    sign = -1.0
    i = 1
  }
  while i < bytes.length() {
    let c = bytes[i].to_int()
    if c == 0x2E {
      decimal = true
    } else if c >= 0x30 && c <= 0x39 {
      let digit = (c - 0x30).to_double()
      if decimal {
        result += digit / divisor
        divisor *= 10.0
      } else {
        result = result * 10.0 + digit
      }
    }
    i += 1
  }
  result * sign
}
src\process\pipeline\pipeline.mbt

58.89%
