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#!/bin/sh
# the next line restats using tclsh \
exec tclsh "$0" "$@"
#
# $Id: charconv.tcl,v 1.13 2006/04/20 20:50:51 adam Exp $
proc usage {} {
puts {charconv.tcl: [-p prefix] [-s split] [-o ofile] file ... }
exit 1
}
proc preamble_trie {ofilehandle ifiles ofile} {
set f $ofilehandle
set totype {unsigned }
puts $f "/** \\file $ofile"
puts $f " \\brief Character conversion, generated from [lindex $ifiles 0]"
puts $f ""
puts $f " Generated automatically by charconv.tcl"
puts $f "*/"
puts $f "\#include <string.h>"
puts $f "
struct yaz_iconv_trie_flat {
char from\[6\];
unsigned combining : 1;
$totype to : 24;
};
struct yaz_iconv_trie_dir {
int ptr : 15;
unsigned combining : 1;
$totype to : 24;
};
struct yaz_iconv_trie {
struct yaz_iconv_trie_flat *flat;
struct yaz_iconv_trie_dir *dir;
};
"
puts $f {
static unsigned long lookup(struct yaz_iconv_trie **ptrs, int ptr, unsigned char *inp,
size_t inbytesleft, size_t *no_read, int *combining)
{
struct yaz_iconv_trie *t = (ptr > 0) ? ptrs[ptr-1] : 0;
if (!t || inbytesleft < 1)
return 0;
if (t->dir)
{
size_t ch = inp[0] & 0xff;
unsigned long code =
lookup(ptrs, t->dir[ch].ptr, inp+1, inbytesleft-1, no_read, combining);
if (code)
{
(*no_read)++;
return code;
}
if (t->dir[ch].to)
{
code = t->dir[ch].to;
*combining = t->dir[ch].combining;
*no_read = 1;
return code;
}
}
else
{
struct yaz_iconv_trie_flat *flat = t->flat;
while (flat->to)
{
size_t len = strlen(flat->from);
if (len <= inbytesleft)
{
if (memcmp(flat->from, inp, len) == 0)
{
*no_read = len;
*combining = flat->combining;
return flat->to;
}
}
flat++;
}
}
return 0;
}
}
}
proc reset_trie {} {
global trie
foreach x [array names trie] {
unset trie($x)
}
set trie(no) 1
set trie(size) 0
set trie(max) 0
set trie(split) 50
set trie(prefix) {}
}
proc ins_trie {from to combining codename} {
global trie
if {![info exists trie(no)]} {
set trie(no) 1
set trie(size) 0
set trie(max) 0
}
if {$trie(max) < $to} {
set trie(max) $to
}
incr trie(size)
ins_trie_r [split $from] $to $combining $codename 0
}
proc split_trie {this} {
global trie
set trie($this,type) d
foreach e $trie($this,content) {
set from [lindex $e 0]
set to [lindex $e 1]
set combining [lindex $e 2]
set codename [lindex $e 3]
set ch [lindex $from 0]
set rest [lrange $from 1 end]
if {[llength $rest]} {
if {![info exist trie($this,ptr,$ch)]} {
set trie($this,ptr,$ch) $trie(no)
incr trie(no)
}
ins_trie_r $rest $to $combining $codename $trie($this,ptr,$ch)
} else {
set trie($this,to,$ch) $to
set trie($this,combining,$ch) $combining
set trie($this,codename,$ch) $codename
}
}
set trie($this,content) missing
}
proc ins_trie_r {from to combining codename this} {
global trie
if {![info exist trie($this,type)]} {
set trie($this,type) f
}
if {$trie($this,type) == "f"} {
lappend trie($this,content) [list $from $to $combining $codename]
# split ?
if {[llength $trie($this,content)] > $trie(split)} {
split_trie $this
return [ins_trie_r $from $to $combining $codename $this]
}
} else {
set ch [lindex $from 0]
set rest [lrange $from 1 end]
if {[llength $rest]} {
if {![info exist trie($this,ptr,$ch)]} {
set trie($this,ptr,$ch) $trie(no)
incr trie(no)
}
ins_trie_r $rest $to $combining $codename $trie($this,ptr,$ch)
} else {
set trie($this,to,$ch) $to
set trie($this,combining,$ch) $combining
set trie($this,codename,$ch) $codename
}
}
}
proc dump_trie {ofilehandle} {
global trie
set f $ofilehandle
puts $f "/* TRIE: size $trie(size) */"
set this $trie(no)
while { [incr this -1] >= 0 } {
puts $f "/* PAGE $this */"
if {$trie($this,type) == "f"} {
puts $f "struct yaz_iconv_trie_flat $trie(prefix)page${this}_flat\[\] = \{"
foreach m $trie($this,content) {
puts -nonewline $f " \{\""
foreach d [lindex $m 0] {
puts -nonewline $f "\\x$d"
}
puts -nonewline $f "\", [lindex $m 2], 0x[lindex $m 1]"
set v [lindex $m 3]
puts $f "\}, /* $v */"
}
puts $f " \{\"\", 0\}"
puts $f "\};"
puts $f "struct yaz_iconv_trie $trie(prefix)page${this} = \{"
puts $f " $trie(prefix)page${this}_flat, 0"
puts $f "\};"
} else {
puts $f "struct yaz_iconv_trie_dir $trie(prefix)page${this}_dir\[256\] = \{"
for {set i 0} {$i < 256} {incr i} {
puts -nonewline $f " \{"
set ch [format %02X $i]
set null 1
if {[info exist trie($this,ptr,$ch)]} {
puts -nonewline $f "[expr $trie($this,ptr,$ch)+1], "
set null 0
} else {
puts -nonewline $f "0, "
}
if {[info exist trie($this,combining,$ch)]} {
puts -nonewline $f "$trie($this,combining,$ch), "
} else {
puts -nonewline $f "0, "
}
if {[info exist trie($this,to,$ch)]} {
puts -nonewline $f "0x$trie($this,to,$ch)\}"
set null 0
} else {
puts -nonewline $f "0\}"
}
if {[info exist trie($this,codename,$ch)]} {
set v $trie($this,codename,$ch)
puts -nonewline $f " /* $v */"
}
if {$i < 255} {
puts $f ","
} else {
puts $f ""
}
}
puts $f "\};"
puts $f "struct yaz_iconv_trie $trie(prefix)page${this} = \{"
puts $f " 0, $trie(prefix)page${this}_dir"
puts $f "\};"
}
}
puts $f "struct yaz_iconv_trie *$trie(prefix)ptrs \[\] = {"
for {set this 0} {$this < $trie(no)} {incr this} {
puts $f " &$trie(prefix)page$this,"
}
puts $f "0, };"
puts $f ""
puts $f "unsigned long yaz_$trie(prefix)_conv
(unsigned char *inp, size_t inbytesleft, size_t *no_read, int *combining)
{
unsigned long code;
code = lookup($trie(prefix)ptrs, 1, inp, inbytesleft, no_read, combining);
if (!code)
{
*no_read = 1;
}
return code;
}
"
}
proc readfile {fname ofilehandle prefix omits reverse} {
global trie
set marc_lines 0
set ucs_lines 0
set utf_lines 0
set codename_lines 0
set lineno 0
set f [open $fname r]
set tablenumber x
set combining 0
set codename {}
while {1} {
incr lineno
set cnt [gets $f line]
if {$cnt < 0} {
break
}
if {[regexp {<entitymap>} $line s]} {
reset_trie
set trie(prefix) "${prefix}"
} elseif {[regexp {</entitymap>} $line s]} {
dump_trie $ofilehandle
} elseif {[regexp {<character hex="([^\"]*)".*<unientity>([0-9A-Fa-f]*)</unientity>} $line s hex ucs]} {
ins_trie $hex $ucs $combining {}
unset hex
} elseif {[regexp {<codeTable .*number="([0-9]+)"} $line s tablenumber]} {
reset_trie
set trie(prefix) "${prefix}_$tablenumber"
set combining 0
} elseif {[regexp {</codeTable>} $line s]} {
if {[lsearch $omits $tablenumber] == -1} {
dump_trie $ofilehandle
}
} elseif {[regexp {</code>} $line s]} {
if {[string length $ucs]} {
if {$reverse} {
for {set i 0} {$i < [string length $utf]} {incr i 2} {
lappend hex [string range $utf $i [expr $i+1]]
}
# puts "ins_trie $hex $marc
ins_trie $hex $marc $combining $codename
unset hex
} else {
for {set i 0} {$i < [string length $marc]} {incr i 2} {
lappend hex [string range $marc $i [expr $i+1]]
}
# puts "ins_trie $hex $ucs"
ins_trie $hex $ucs $combining $codename
unset hex
}
}
set marc {}
set uni {}
set codename {}
set combining 0
} elseif {[regexp {<marc>([0-9A-Fa-f]*)</marc>} $line s marc]} {
incr marc_lines
} elseif {[regexp {<name>(.*)</name>} $line s codename]} {
incr codename_lines
} elseif {[regexp {<name>(.*)} $line s codename]} {
incr codename_lines
incr lineno
set cnt [gets $f line]
if {$cnt < 0} {
break
}
if {[regexp {(.*)</name>} $line s codename_ex]} {
set codename "${codename} ${codename_ex}"
}
} elseif {[regexp {<isCombining>true</isCombining>} $line s]} {
set combining 1
} elseif {[regexp {<ucs>([0-9A-Fa-f]*)</ucs>} $line s ucs]} {
incr ucs_lines
} elseif {[regexp {<utf-8>([0-9A-Fa-f]*)</utf-8>} $line s utf]} {
incr utf_lines
}
}
close $f
}
set verbose 0
set ifile {}
set ofile out.c
set prefix {c}
set reverse_map 0
# Parse command line
set l [llength $argv]
set i 0
set omits {}
while {$i < $l} {
set arg [lindex $argv $i]
switch -glob -- $arg {
-v {
incr verbose
}
-s {
if {[string length $arg]} {
set arg [lindex $argv [incr i]]
}
set trie(split) $arg
}
-p {
if {[string length $arg]} {
set arg [lindex $argv [incr i]]
}
set prefix $arg
}
-o {
if {[string length $arg]} {
set arg [lindex $argv [incr i]]
}
set ofile $arg
}
-O {
if {[string length $arg]} {
set arg [lindex $argv [incr i]]
}
lappend omits $arg
}
-r {
set reverse_map 1
}
default {
lappend ifiles $arg
}
}
incr i
}
if {![info exists ifiles]} {
puts "charconv.tcl: missing input file(s)"
usage
}
set ofilehandle [open $ofile w]
preamble_trie $ofilehandle $ifiles $ofile
foreach ifile $ifiles {
readfile $ifile $ofilehandle $prefix $omits $reverse_map
}
close $ofilehandle
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