Files
mruby-mruby/mrbgems/mruby-io
Yukihiro "Matz" Matsumoto 7b9d1da3fc mruby-io: add comprehensive call-seq documentation for all Ruby and C methods
Added complete call-seq documentation for the entire mruby-io gem across
both Ruby and C implementations:

## Ruby Methods (mrblib/) - 50 methods documented:

### Kernel Module (kernel.rb):
- Backtick operator: shell command execution with output capture
- open: unified file/subprocess opening with pipe support
- p: debug output with inspect formatting and multiple argument handling
- print/puts/printf: output methods with proper formatting and separators
- gets/readline/readlines: input methods with various line handling options

### File Constants (file_constants.rb):
- FNM_* constants: file name matching flags for glob and fnmatch operations
  with detailed explanations of case sensitivity, escaping, and pattern behavior

### IO Class (io.rb):
Class methods:
- IO.open: creates IO objects with automatic resource management
- IO.popen: subprocess communication with pipe handling
- IO.pipe: creates connected pipe endpoints for IPC
- IO.read: convenience method for reading entire files

Instance methods:
- Stream positioning: pos=, rewind, tell with proper seeking behavior
- Iteration: each, each_byte, each_char with enumerator support
- Output: puts, print, printf with formatting and newline handling
- Utility: hash, <<, ungetbyte with proper stream manipulation
- Global streams: STDIN/STDOUT/STDERR and $stdin/$stdout/$stderr

### File Class (file.rb):
Instance methods:
- Constructor: handles both file paths and file descriptors
- Timestamps: atime, ctime, mtime with proper Time object conversion
- Inspection: inspect method for debugging file objects

Class methods:
- Path utilities: join with cross-platform separator handling
- File iteration: foreach with block and enumerator support
- FileTest delegation: complete set of file type and existence checks
  (directory?, exist?, file?, pipe?, size, socket?, symlink?, zero?)
- Path manipulation: extname for extension extraction, path for conversion

## C Methods (src/) - 25 methods documented:

### Core IO Operations (io.c):
- File descriptor management: fileno with proper error handling
- Stream state: closed?, eof?, sync/sync= for buffering control
- Process management: pid for pipe process tracking
- Resource management: close_on_exec?/close_on_exec= for FD_CLOEXEC handling

### Reading Operations:
- Character reading: getc, readchar with EOF handling differences
- Byte reading: getbyte, readbyte with integer conversion
- Buffer reading: read with length and output buffer support
- Stream manipulation: ungetc for character pushback

### System Operations:
- IO multiplexing: IO.select for monitoring multiple streams
- Constructor: IO.new for creating IO objects from file descriptors
- Stream flushing: flush for forcing output to OS

Co-authored-by: Atlassian Rovo Dev
2025-08-14 10:52:48 +09:00
..

mruby-io

IO and File classes for mruby

Installation

Add the line below to your build configuration.

  conf.gem core: 'mruby-io'

Implemented methods

IO

method mruby-io memo
IO.binread
IO.binwrite
IO.copy_stream
IO.new, IO.for_fd, IO.open o
IO.foreach
IO.pipe o
IO.popen o
IO.read o
IO.readlines
IO.select o
IO.sysopen o
IO.try_convert
IO.write
IO#<<
IO#advise
IO#autoclose=
IO#autoclose?
IO#binmode
IO#binmode?
IO#bytes obsolete
IO#chars obsolete
IO#clone, IO#dup o
IO#close o
IO#close_on_exec= o
IO#close_on_exec? o
IO#close_read
IO#close_write
IO#closed? o
IO#codepoints obsolete
IO#each_byte o
IO#each_char o
IO#each_codepoint
IO#each_line o
IO#eof, IO#eof? o
IO#external_encoding
IO#fcntl
IO#fdatasync
IO#fileno, IO#to_i o
IO#flush o
IO#fsync
IO#getbyte o
IO#getc o
IO#gets o
IO#internal_encoding
IO#ioctl
IO#isatty, IO#tty? o
IO#lineno
IO#lineno=
IO#lines obsolete
IO#pid o
IO#pos, IO#tell o
IO#pos= o
IO#print o
IO#printf o
IO#putc
IO#puts o
IO#read o
IO#read_nonblock
IO#readbyte o
IO#readchar o
IO#readline o
IO#readlines o
IO#readpartial
IO#reopen
IO#rewind
IO#seek o
IO#set_encoding
IO#stat
IO#sync o
IO#sync= o
IO#sysread o
IO#sysseek o
IO#syswrite o
IO#to_io
IO#ungetbyte o
IO#ungetc o
IO#write o
IO#write_nonblock

File

method mruby-io memo
File.absolute_path
File.atime
File.basename o
File.blockdev? FileTest
File.chardev? FileTest
File.chmod o
File.chown
File.ctime
File.delete, File.unlink o
File.directory? o FileTest
File.dirname o
File.executable? FileTest
File.executable_real? FileTest
File.exist?, exists? o FileTest
File.expand_path o
File.extname o
File.file? o FileTest
File.fnmatch, File.fnmatch?
File.ftype
File.grpowned? FileTest
File.identical? FileTest
File.join o
File.lchmod
File.lchown
File.link
File.lstat
File.mtime
File.new, File.open o
File.owned? FileTest
File.path
File.pipe? o FileTest
File.readable? FileTest
File.readable_real? FileTest
File.readlink o
File.realdirpath
File.realpath o
File.rename o
File.setgid? FileTest
File.setuid? FileTest
File.size o
File.size? o FileTest
File.socket? o FileTest
File.split
File.stat
File.sticky? FileTest
File.symlink
File.symlink? o FileTest
File.truncate
File.umask o
File.utime
File.world_readable?
File.world_writable?
File.writable? FileTest
File.writable_real? FileTest
File.zero? o FileTest
File#atime o
File#chmod
File#chown
File#ctime o
File#flock o
File#lstat
File#mtime o
File#path o
File#size
File#truncate

Porting Note

If your (non Windows) platform does not support getpwnam(3) for some reason, define MRB_IO_NO_PWNAM. See mruby#5358.

License

Copyright (c) 2013 Internet Initiative Japan Inc. Copyright (c) 2017 mruby developers

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.