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figlet 中文支持

figlet的帮助里说它支持多字节字符，如CJK字符。

不过这肯定需要字体文件，我查到它叫figfonts-CJK，但是不大容易下到，后来发现Debian里虽然package下不来，但是src可以，解开以后赫然发现了gb16fs.flf，呵呵，把里面所有的flf和flc文件放到/usr/share/figlet里就好了，注意要去掉目录，只把文件拷过来。

本以为现在就行了，可是“figlet -f gb16fs 王璐”是乱码，又查了查帮助，说是需要control file, figfonts-CJK自带了一些,叫unshift, iso2022, big5等，但是都试了一遍还是不行。

仔细看了figfont.txt, 它描述了figlet的字体文件和控制文件的格式，我发现控制文件中应当用b命令，但是后来发现用了也不行。

再看一眼figfont.txt中关于command的说明，发现h命令类似，只不过是针对HZ编码的，是以"~{"为开始符，然后把以后每两个字节都当成一个汉字处理，直到遇到"~}"为止。我写个CPP看“王”的GB编码，是0xcdf5, 在gb16fs 对应于0x4d75, 我又看了下unshift.flc,这不就是我想要的么，unshift里定义的编码转换就是把每个字节的首二进制位清零，那么0xcdf5就应该变成0x4d75，但是仔细一看又不对了，每个t命令接的两个区间应该等大，而它里面第一个区间都是以\0x??7E结尾的，显然不对，应该改为\0x??FE,于是我另存了个wl.flc，修正了这个bug

现在试“figlet -f wl 王璐” 仍然不行，直觉告诉了我，它仍没有按多字节处理，又查了下gb16fs.flf，果然乱码的第一个符号就是202,即0xcd,“王”的第一个字节！

于是改用h命令强制处理双字节，并把输入改为"~{王璐~}"，字体仍用gb16fs,控制文件用wl(已加入wl.flc),于是， 出现了！！！

这就是成功的一大步了，说明了h命令是好的，字体文件也是好的，figlet也确实具有处理多字节字符的能力，于是目标锁定在b命令上

文档上说b命令每次读一个字符，如果小于0x80则当单字节字符输出，否则再读入一个字符，一起当作双字节字符输出。看似这应当正常工作，但是就是不行。

然后我怒了，下了个源码看(是到官方地址下的，源里只有2.2.1，没有2.2.2，但是差别应该不大)，在figlet.c中，742行附近为判断输入命令的，可见b命令使得multibyte值为1.而getinchr中对
multibyte不同值对应的模式都有说明，看似multibyte=1对应的DBCS模式也是正常的。

但是，具体一看getinchr()函数，赫然发现multibyte==1时执行的竟然是只把0x80~0x94和0xE0~0xEF区间的字节当作双字节起始字节！！多么大的bug啊。这个应该是和
SHIFT-JIS相同（如果它对SHIFT-JIS的描述是正确的），不过也难怪，毕竟老外不了解CJK,另外它们也不会去测试这个，因此这个bug一直没发现（至少主页上没说）。

那当然改掉它了，改成0x80~0xFF区间就行了，另外我还在wl.flc上加了一行t \0xFFA1-\0xFFFE \0x7F21-\0x7F7E

编译时要设一下font目录，然后编译安装，然后还要把/usr/share/figlet里的字体和控制文件拷出来一份。

然后。。。哇哈哈哈。。。终于出现了！！！
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Comments

ESN said…
“于是改用h命令强制处理双字节，并把输入改为"~{王璐~}"，字体仍用gb16fs,控制文件用wl(已加入wl.flc),于是， 出现了！！！”

请问上面说的h命令是直接放到unshift.flc中的单独一行吗？你的终端locale是zh_CN.UTF-8吗？我这里没有输出，请指教，谢谢
Sunday, February 7, 2010 at 6:27:00 AM GMT+1
Lu Wang said…
啊，说实话已经忘了，都这么长时间了。

但是根据情况，当时我的终端应该是zh_CN.GBK，否则编码也不可能按照gb来读入

h应该是放在unshift.flc里

另外我看现在有个controlfile是utf8，不知道是不是可以利用一下

figfonts-cjk你是从哪里下的呢，我现在倒找不到了。
Sunday, February 7, 2010 at 8:22:00 AM GMT+1
ESN said…
谢谢你的回复。

我在这里下载到的：
http://archive.debian.net/en/slink/figfonts-cjk
下载链接：
http://archive.debian.org/debian/dists/slink/non-free/source/text/figfonts_2.2.orig.tar.gz

我也试过utf8.flc，但是一样没有输出。

另外，那张女孩的画很棒，用什么软件画的？我喜欢用手机画，不过水平很低，呵呵。另外，能否给我发邮件？在这里聊有碍观瞻哈
Sunday, February 7, 2010 at 5:42:00 PM GMT+1
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