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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /tools/make_charset_table.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/make_charset_table.c')
-rw-r--r-- | tools/make_charset_table.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/tools/make_charset_table.c b/tools/make_charset_table.c new file mode 100644 index 0000000..27d921a --- /dev/null +++ b/tools/make_charset_table.c @@ -0,0 +1,125 @@ +/* make_charset_table.c + * sample program to generate tables for charsets.c using iconv + * + * public domain + */ + +#include <stdio.h> +#include <stdint.h> +#include <errno.h> +#include <iconv.h> + +#define UNREPL 0xFFFD + +int main(int argc, char **argv) { + /* for now only UCS-2 */ + uint16_t table[0x100]; + + iconv_t conv; + const char *charset; + int i, j; + + /* 0x00 ... 0x7F same as ASCII? */ + int ascii_based = 1; + /* 0x00 ... 0x9F same as ISO? */ + int iso_based = 1; + + if (argc != 2) { + printf("usage: %s <charset>\n", argv[0]); + return 1; + } + + charset = argv[1]; + + conv = iconv_open("UCS-2", charset); + if (conv == (iconv_t) -1) { + perror("iconv_open"); + return 2; + } + iconv_close(conv); + + for (i = 0x00; i < 0x100; i++) { + unsigned char in[1], out[2]; + size_t inlen = 1, outlen = 2; + + char *inbuf = (char *) in; + char *outbuf = (char *) out; + + size_t ret; + + in[0] = i; + + conv = iconv_open("UCS-2BE", charset); + + if (conv == (iconv_t) -1) { + /* shouldn't fail now */ + perror("iconv_open"); + return 2; + } + + ret = iconv(conv, &inbuf, &inlen, &outbuf, &outlen); + + if (ret == (size_t) -1 && errno == EILSEQ) { + table[i] = UNREPL; + iconv_close(conv); + continue; + } + + if (ret == (size_t) -1) { + perror("iconv"); + iconv_close(conv); + return 4; + } + + iconv_close(conv); + + if (ret != 0 || inlen != 0 || outlen != 0) { + fprintf(stderr, "%d: smth went wrong: %zu %zu %zu\n", i, ret, inlen, outlen); + return 3; + } + + if (i < 0x80 && (out[0] != 0 || out[1] != i)) + ascii_based = 0; + + if (i < 0xA0 && (out[0] != 0 || out[1] != i)) + iso_based = 0; + + table[i] = (out[0] << 8) | out[1]; + } + + /* iso_based not supported */ + iso_based = 0; + + printf("/* generated by %s %s */\n", argv[0], charset); + + if (iso_based) + i = 0xA0; + else if (ascii_based) + i = 0x80; + else + i = 0; + + printf("const gunichar2 charset_table_%s[0x%x] = {\n", charset, 0x100 - i); + while (i < 0x100) { + int start = i; + + printf(" "); + + for (j = 0; j < 8; j++, i++) { + if (table[i] == UNREPL) + printf("UNREPL, "); + else + printf("0x%.4x, ", table[i]); + } + + if ((start & 0xf) == 0) + printf(" /* 0x%.2X - */", start); + else + printf(" /* - 0x%.2X */", i - 1); + + printf("\n"); + } + printf("};\n"); + + return 0; +} |