#! /usr/bin/env tclsh
namespace eval ::xvfs {}
namespace eval ::xvfs::callback {}
set ::xvfs::_xvfsDir [file dirname [info script]]
# Functions
proc ::xvfs::_emitLine {line} {
if {[info command ::minirivet::_emitOutput] ne ""} {
::minirivet::_emitOutput "${line}\n"
} else {
puts $line
}
}
proc ::xvfs::printHelp {channel {errors ""}} {
if {[llength $errors] != 0} {
foreach error $errors {
puts $channel "error: $error"
}
puts $channel ""
}
puts $channel "Usage: dir2c \[--help\] \[--output <filename>\] --directory <rootDirectory> --name <fsName>"
flush $channel
}
proc ::xvfs::sanitizeCString {string} {
set output [join [lmap char [split $string ""] {
if {![regexp {[A-Za-z0-9./-]} $char]} {
binary scan $char H* char
set char "\\[format %03o 0x$char]"
}
set char
}] ""]
return $output
}
proc ::xvfs::sanitizeCStringList {list {prefix ""} {width 80}} {
set lines [list]
set row [list]
foreach item $list {
lappend row "\"[sanitizeCString $item]\""
set rowString [join $row {, }]
set rowString "${prefix}${rowString}"
if {[string length $rowString] > $width} {
set row [list]
lappend lines $rowString
unset rowString
}
}
if {[info exists rowString]} {
lappend lines $rowString
}
return [join $lines "\n"]
}
proc ::xvfs::binaryToCHex {binary {prefix ""} {width 10}} {
set binary [binary encode hex $binary]
set output [list]
set width [expr {$width * 2}]
set stopAt [expr {$width - 1}]
set offset 0
while 1 {
set row [string range $binary $offset [expr {$offset + $stopAt}]]
if {[string length $row] == 0} {
break
}
incr offset [string length $row]
set rowOutput [list]
while {$row ne ""} {
set value [string range $row 0 1]
set row [string range $row 2 end]
lappend rowOutput "\\x$value"
}
set rowOutput [join $rowOutput {}]
set rowOutput "${prefix}\"${rowOutput}\""
lappend output $rowOutput
}
if {[llength $output] == 0} {
return "${prefix}\"\""
}
set output [join $output "\n"]
}
proc ::xvfs::processFile {fsName inputFile outputFile fileInfoDict} {
array set fileInfo $fileInfoDict
switch -exact -- $fileInfo(type) {
"file" {
set type "XVFS_FILE_TYPE_REG"
if {[info exists fileInfo(fileContents)]} {
set data $fileInfo(fileContents)
} else {
set fd [open $inputFile]
fconfigure $fd -encoding binary -translation binary -blocking true
set data [read $fd]
close $fd
}
set size [string length $data]
set data [string trimleft [binaryToCHex $data "\t\t\t"]]
}
"directory" {
set type "XVFS_FILE_TYPE_DIR"
set children $fileInfo(children)
set size [llength $children]
if {$size == 0} {
set children "NULL"
} else {
set children [string trimleft [sanitizeCStringList $children "\t\t\t"]]
# This initializes it using a C99 compound literal, C99 is required
set children "(const char *\[\]) \{$children\}"
}
}
default {
return -code error "Unable to process $inputFile, unknown type: $fileInfo(type)"
}
}
::xvfs::_emitLine "\t\{"
::xvfs::_emitLine "\t\t.name = \"[sanitizeCString $outputFile]\","
::xvfs::_emitLine "\t\t.type = $type,"
::xvfs::_emitLine "\t\t.size = $size,"
switch -exact -- $fileInfo(type) {
"file" {
::xvfs::_emitLine "\t\t.data.fileContents = (const unsigned char *) $data"
}
"directory" {
::xvfs::_emitLine "\t\t.data.dirChildren = $children"
}
}
::xvfs::_emitLine "\t\},"
}
proc ::xvfs::processDirectory {fsName directory {subDirectory ""}} {
set subDirectories [list]
set outputFiles [list]
set workingDirectory [file join $directory $subDirectory]
set outputDirectory $subDirectory
if {$subDirectory eq ""} {
set isTopLevel true
} else {
set isTopLevel false
}
if {$isTopLevel} {
::xvfs::_emitLine "static const struct xvfs_file_data xvfs_${fsName}_data\[\] = \{"
}
# XXX:TODO: Include hidden files ?
set children [list]
foreach file [glob -nocomplain -tails -directory $workingDirectory *] {
if {$file in {. ..}} {
continue
}
set inputFile [file join $workingDirectory $file]
set outputFile [file join $outputDirectory [encoding convertto utf-8 $file]]
if {[info command ::xvfs::callback::setOutputFileName] ne ""} {
set outputFile [::xvfs::callback::setOutputFileName $file $workingDirectory $inputFile $outputDirectory $outputFile]
if {$outputFile eq "/"} {
continue
}
}
unset -nocomplain fileInfo
catch {
file lstat $inputFile fileInfo
}
if {![info exists fileInfo]} {
puts stderr "warning: Unable to access $inputFile, skipping"
}
lappend children [file tail $file]
if {$fileInfo(type) eq "directory"} {
lappend subDirectories $outputFile
continue
}
processFile $fsName $inputFile $outputFile [array get fileInfo]
lappend outputFiles $outputFile
}
foreach subDirectory $subDirectories {
lappend outputFiles {*}[processDirectory $fsName $directory $subDirectory]
}
set inputFile $directory
set outputFile $outputDirectory
if {[info command ::xvfs::callback::setOutputFileName] ne ""} {
set outputFile [::xvfs::callback::setOutputFileName $directory $directory $inputFile $outputDirectory $outputFile]
}
if {$outputFile ne "/"} {
unset -nocomplain fileInfo
file stat $inputFile fileInfo
set fileInfo(children) $children
processFile $fsName $inputFile $outputFile [array get fileInfo]
lappend outputFiles $outputFile
}
if {$isTopLevel} {
if {[info command ::xvfs::callback::addOutputFiles] ne ""} {
lappend outputFiles {*}[::xvfs::callback::addOutputFiles $fsName]
}
::xvfs::_emitLine "\};"
}
return $outputFiles
}
proc ::xvfs::main {argv} {
# Main entry point
## 1. Parse arguments
if {[llength $argv] % 2 != 0} {
lappend argv ""
}
foreach {arg val} $argv {
switch -exact -- $arg {
"--help" {
printHelp stdout
exit 0
}
"--directory" {
set rootDirectory $val
}
"--name" {
set fsName $val
}
"--output" - "--header" {
# Ignored, handled as part of some other process
}
default {
printHelp stderr [list "Invalid option: $arg $val"]
exit 1
}
}
}
## 2. Validate arguments
set errors [list]
if {![info exists rootDirectory]} {
lappend errors "--directory must be specified"
}
if {![info exists fsName]} {
lappend errors "--name must be specified"
}
if {[llength $errors] != 0} {
printHelp stderr $errors
exit 1
}
## 3. Start processing directory and producing initial output
set ::xvfs::outputFiles [processDirectory $fsName $rootDirectory]
set ::xvfs::fsName $fsName
set ::xvfs::rootDirectory $rootDirectory
}
proc ::xvfs::run {args} {
uplevel #0 { package require minirivet }
set ::xvfs::argv $args
::minirivet::parse [file join $::xvfs::_xvfsDir xvfs.c.rvt]
}
proc ::xvfs::setOutputChannel {channel} {
uplevel #0 { package require minirivet }
tailcall ::minirivet::setOutputChannel $channel
}
proc ::xvfs::setOutputVariable {variable} {
uplevel #0 { package require minirivet }
tailcall ::minirivet::setOutputVariable $variable
}
proc ::xvfs::staticIncludeHeaderData {headerData} {
set ::xvfs::xvfsCoreH $headerData
}
proc ::xvfs::staticIncludeHeader {pathToHeaderFile} {
set fd [open $pathToHeaderFile]
::xvfs::staticIncludeHeaderData [read $fd]
close $fd
}
package provide xvfs 1