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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // source.swift | ||
| // shell | ||
| // | ||
| // Created by Nicolas Holzschuch on 16/01/2022. | ||
| // Copyright © 2022 Nicolas Holzschuch. All rights reserved. | ||
| // | ||
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| import Foundation | ||
| import ios_system | ||
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| func convertCArguments(argc: Int32, argv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?) -> [String]? { | ||
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| var args = [String]() | ||
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| for i in 0..<Int(argc) { | ||
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| guard let argC = argv?[i] else { | ||
| return nil | ||
| } | ||
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| let arg = String(cString: argC) | ||
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| args.append(arg) | ||
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| } | ||
| return args | ||
| } | ||
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| // TODO: create commands makeGlobal, makeLocal in libc_replacement | ||
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| // Small replacement for the "source" shell command. | ||
| // Everything that affects the current shell should affect the current shell (for now: setenv and cd). | ||
| // Files with "if" / "while" commands are going to fail. | ||
| @_cdecl("source") | ||
| public func source(argc: Int32, argv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?) -> Int32 { | ||
| let shortUsage = "usage: source file [file2] [file3]\n" | ||
| guard let args = convertCArguments(argc: argc, argv: argv) else { | ||
| fputs(shortUsage, thread_stdout) | ||
| return 0 | ||
| } | ||
| if args.count == 1 { | ||
| fputs(shortUsage, thread_stdout) | ||
| return 0 | ||
| } | ||
| // To make environment global, set environment[current_pid] to null, restore afterwards | ||
| makeGlobal() // setenv commands go global | ||
| for i in 1..<args.count { | ||
| let fileName = URL(fileURLWithPath: args[i]) | ||
| if (FileManager().fileExists(atPath: fileName.path)) { | ||
| do { | ||
| let contentOfFile = try String(contentsOf: fileName, encoding: String.Encoding.utf8) | ||
| let commands = contentOfFile.split(separator: "\n") | ||
| for command in commands { | ||
| let trimmedCommand = command.trimmingCharacters(in: .whitespacesAndNewlines) | ||
| if (trimmedCommand.count == 0) { continue } // skip white lines | ||
| if (trimmedCommand.hasPrefix("#")) { continue } // skip comments | ||
| // reset the LC_CTYPE (some commands (luatex) can change it): | ||
| setenv("LC_CTYPE", "UTF-8", 1); | ||
| setlocale(LC_CTYPE, "UTF-8"); | ||
| // Todo: make cd globzl: ??? | ||
| let pid = ios_fork() | ||
| _ = ios_system(trimmedCommand) | ||
| fflush(thread_stdout) | ||
| ios_waitpid(pid) | ||
| ios_releaseThreadId(pid) | ||
| } | ||
| } | ||
| catch { | ||
| fputs("source: error loading \(fileName).", thread_stderr) | ||
| } | ||
| } else { | ||
| fputs("source: file \(fileName) not found.", thread_stderr) | ||
| } | ||
| } | ||
| makeLocal() // back to local | ||
| newPreviousDirectory() // make directory changes permanent | ||
| return 0 | ||
| } | ||
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| // Now check that it *does* change the environment when run. Should not. Might have to be edited. | ||
| // HOW? detect "setenv" and "cd"? |