/* * Copyright (c) 1997-2006 Motoyuki Kasahara * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "build-pre.h" #include "eb.h" #include "error.h" #include "appendix.h" #include "text.h" #include "build-post.h" /* * Default hookset. */ EB_Hookset eb_default_hookset; /* * Initialize default hookset. */ void eb_initialize_default_hookset(void) { LOG(("in: eb_initialize_default_hookset()")); eb_initialize_hookset(&eb_default_hookset); LOG(("out: eb_initialize_default_hookset()")); } /* * Initialize a hookset. */ void eb_initialize_hookset(EB_Hookset *hookset) { int i; LOG(("in: eb_initialize_hookset()")); for (i = 0; i < EB_NUMBER_OF_HOOKS; i++) { hookset->hooks[i].code = i; hookset->hooks[i].function = NULL; } hookset->hooks[EB_HOOK_NARROW_JISX0208].function = eb_hook_euc_to_ascii; hookset->hooks[EB_HOOK_NARROW_FONT].function = eb_hook_narrow_character_text; hookset->hooks[EB_HOOK_WIDE_FONT].function = eb_hook_wide_character_text; hookset->hooks[EB_HOOK_NEWLINE].function = eb_hook_newline; LOG(("out: eb_initialize_hookset()")); } /* * Finalize a hookset. */ void eb_finalize_hookset(EB_Hookset *hookset) { int i; LOG(("in: eb_finalize_hookset()")); for (i = 0; i < EB_NUMBER_OF_HOOKS; i++) { hookset->hooks[i].code = i; hookset->hooks[i].function = NULL; } LOG(("out: eb_finalize_hookset()")); } /* * Set a hook. */ EB_Error_Code eb_set_hook(EB_Hookset *hookset, const EB_Hook *hook) { EB_Error_Code error_code; LOG(("in: eb_set_hook(hook=%d)", (int)hook->code)); /* * Set a hook. */ if (hook->code < 0 || EB_NUMBER_OF_HOOKS <= hook->code) { error_code = EB_ERR_NO_SUCH_HOOK; goto failed; } hookset->hooks[hook->code].function = hook->function; LOG(("out: eb_set_hook() = %s", eb_error_string(EB_SUCCESS))); return EB_SUCCESS; /* * An error occurs... */ failed: LOG(("out: eb_set_hook() = %s", eb_error_string(error_code))); return error_code; } /* * Set a list of hooks. */ EB_Error_Code eb_set_hooks(EB_Hookset *hookset, const EB_Hook *hook) { EB_Error_Code error_code; const EB_Hook *h; LOG(("in: eb_set_hooks(hooks=[below])")); if (eb_log_flag) { for (h = hook; h->code != EB_HOOK_NULL; h++) LOG((" hook=%d", h->code)); } /* * Set hooks. */ for (h = hook; h->code != EB_HOOK_NULL; h++) { if (h->code < 0 || EB_NUMBER_OF_HOOKS <= h->code) { error_code = EB_ERR_NO_SUCH_HOOK; goto failed; } hookset->hooks[h->code].function = h->function; } /* * Unlock the hookset. */ LOG(("out: eb_set_hooks() = %s", eb_error_string(EB_SUCCESS))); return EB_SUCCESS; /* * An error occurs... */ failed: LOG(("out: eb_set_hooks() = %s", eb_error_string(error_code))); return error_code; } /* * EUC JP to ASCII conversion table. */ #define EUC_TO_ASCII_TABLE_START 0xa0 #define EUC_TO_ASCII_TABLE_END 0xff static const unsigned char euc_a1_to_ascii_table[] = { 0x00, 0x20, 0x00, 0x00, 0x2c, 0x2e, 0x00, 0x3a, /* 0xa0 */ 0x3b, 0x3f, 0x21, 0x00, 0x00, 0x00, 0x60, 0x00, /* 0xa8 */ 0x5e, 0x7e, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2d, 0x2f, /* 0xb8 */ 0x5c, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x27, /* 0xc0 */ 0x00, 0x22, 0x28, 0x29, 0x00, 0x00, 0x5b, 0x5d, /* 0xc8 */ 0x7b, 0x7d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */ 0x00, 0x00, 0x00, 0x00, 0x2b, 0x2d, 0x00, 0x00, /* 0xd8 */ 0x00, 0x3d, 0x00, 0x3c, 0x3e, 0x00, 0x00, 0x00, /* 0xe0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5c, /* 0xe8 */ 0x24, 0x00, 0x00, 0x25, 0x23, 0x26, 0x2a, 0x40, /* 0xf0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf8 */ }; static const unsigned char euc_a3_to_ascii_table[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0xb0 */ 0x38, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */ 0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0xc0 */ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0xc8 */ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0xd0 */ 0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */ 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0xe0 */ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0xe8 */ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0xf0 */ 0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf8 */ }; /* * Hook which converts a character from EUC-JP to ASCII. */ EB_Error_Code eb_hook_euc_to_ascii(EB_Book *book, EB_Appendix *appendix, void *container, EB_Hook_Code hook_code, int argc, const unsigned int *argv) { int in_code1, in_code2; int out_code = 0; in_code1 = argv[0] >> 8; in_code2 = argv[0] & 0xff; if (in_code2 < EUC_TO_ASCII_TABLE_START || EUC_TO_ASCII_TABLE_END < in_code2) { out_code = 0; } else if (in_code1 == 0xa1) { out_code = euc_a1_to_ascii_table[in_code2 - EUC_TO_ASCII_TABLE_START]; } else if (in_code1 == 0xa3) { out_code = euc_a3_to_ascii_table[in_code2 - EUC_TO_ASCII_TABLE_START]; } if (out_code == 0) eb_write_text_byte2(book, in_code1, in_code2); else eb_write_text_byte1(book, out_code); return EB_SUCCESS; } /* * Hook for narrow local character. */ EB_Error_Code eb_hook_narrow_character_text(EB_Book *book, EB_Appendix *appendix, void *container, EB_Hook_Code hook_code, int argc, const unsigned int *argv) { char alt_text[EB_MAX_ALTERNATION_TEXT_LENGTH + 1]; if (appendix == NULL || eb_narrow_alt_character_text(appendix, (int)argv[0], alt_text) != EB_SUCCESS) { eb_write_text_string(book, ""); } else { eb_write_text_string(book, alt_text); } return EB_SUCCESS; } /* * Hook for wide local character. */ EB_Error_Code eb_hook_wide_character_text(EB_Book *book, EB_Appendix *appendix, void *container, EB_Hook_Code hook_code, int argc, const unsigned int *argv) { char alt_text[EB_MAX_ALTERNATION_TEXT_LENGTH + 1]; if (appendix == NULL || eb_wide_alt_character_text(appendix, (int)argv[0], alt_text) != EB_SUCCESS) { eb_write_text_string(book, ""); } else { eb_write_text_string(book, alt_text); } return EB_SUCCESS; } /* * Hook for a newline character. */ EB_Error_Code eb_hook_newline(EB_Book *book, EB_Appendix *appendix, void *container, EB_Hook_Code code, int argc, const unsigned int *argv) { eb_write_text_byte1(book, '\n'); return EB_SUCCESS; } /* * Hook which does nothing. */ EB_Error_Code eb_hook_empty(EB_Book *book, EB_Appendix *appendix, void *container, EB_Hook_Code hook_code, int argc, const unsigned int *argv) { return EB_SUCCESS; }