/* * Copyright (c) 2007 The Akuma Project * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * * $Id: error-file.c 133 2007-05-29 14:32:04Z asmodai $ */ /* Crown Copyright (c) 1997 This TenDRA(r) Computer Program is subject to Copyright owned by the United Kingdom Secretary of State for Defence acting through the Defence Evaluation and Research Agency (DERA). It is made available to Recipients with a royalty-free licence for its use, reproduction, transfer to other parties and amendment for any purpose not excluding product development provided that any such use et cetera shall be deemed to be acceptance of the following conditions:- (1) Its Recipients shall ensure that this Notice is reproduced upon any copies or amended versions of it; (2) Any amended version of it shall be clearly marked to show both the nature of and the organisation responsible for the relevant amendment or amendments; (3) Its onward transfer from a recipient to another party shall be deemed to be that party's acceptance of these conditions; (4) DERA gives no warranty or assurance as to its quality or suitability for any purpose and DERA accepts no liability whatsoever in relation to any use to which it may be put. */ /**** error-file.c --- Error file parsing routines. * ** Author: Steve Folkes * **** Commentary: * * This file implements the error file parsing facility specified in the file * "error-file.h". See that file for more details. * **** Change Log: * $Log: error-file.c,v $ * Revision 1.1.1.1 1998/01/17 15:57:45 release * First version to be checked into rolling release. * * Revision 1.3 1994/12/12 11:44:37 smf * Performing changes for 'CR94_178.sid+tld-update' - bringing in line with * OSSG C Coding Standards. * * Revision 1.2 1994/08/22 09:36:44 smf * Fixed bug DR114:ids-too-long. * * Revision 1.1.1.1 1994/07/25 16:05:49 smf * Initial import of library shared files. * **/ /****************************************************************************/ #include "error-file.h" #include "dstring.h" #include "error.h" #include "gen-errors.h" #include "syntax.h" /*--------------------------------------------------------------------------*/ #ifdef FS_NO_ENUM typedef int ErrorFileTagT, *ErrorFileTagP; #define EFTOKEN_NAME (0) #define EFTOKEN_STRING (1) #define EFTOKEN_BLT_STRINGS (2) #define EFTOKEN_BLT_PREFIX (3) #define EFTOKEN_BLT_ERRORS (4) #define EFTOKEN_EOF (5) #else typedef enum { EFTOKEN_NAME, EFTOKEN_STRING, EFTOKEN_BLT_STRINGS, EFTOKEN_BLT_PREFIX, EFTOKEN_BLT_ERRORS, EFTOKEN_EOF } ErrorFileTagT, *ErrorFileTagP; #endif /* defined (FS_NO_ENUM) */ typedef struct ErrorFileLexT { ErrorFileTagT tag; union { CStringP string; } u; } ErrorFileLexT, *ErrorFileLexP; #ifdef FS_NO_ENUM typedef int ErrorFileTokenT, *ErrorFileTokenP; #define EFN_BUILTIN (0) #define EFN_NAME (1) #define EFN_STRING (2) #else typedef enum { EFN_BUILTIN, EFN_NAME, EFN_STRING } ErrorFileTokenT, *ErrorFileTokenP; #endif /* defined (FS_NO_ENUM) */ /*--------------------------------------------------------------------------*/ static BoolT error_file_skip_white_space(IStreamP istream, char *c_ref) { BoolT comment = FALSE; for (;;) { char c; redo: switch (c = ISTREAM_READ_CHAR(istream)) { case '\0': ISTREAM_HANDLE_NULL(istream, redo, eof); break; case '\n': istream_inc_line(istream); comment = FALSE; break; case '#': comment = TRUE; break; default: if ((!comment) && (!syntax_is_white_space(c))) { *c_ref = c; return(TRUE); } } } eof: return(FALSE); } static void error_file_null_character(IStreamP istream, ErrorFileTokenT type) { switch (type)EXHAUSTIVE { case EFN_NAME: E_errf_null_character_in_name(istream); UNREACHED; case EFN_BUILTIN: E_errf_null_char_in_builtin(istream); UNREACHED; case EFN_STRING: E_errf_null_character_in_string(istream); UNREACHED; } } static void error_file_newline(IStreamP istream, ErrorFileTokenT type) { switch (type)EXHAUSTIVE { case EFN_NAME: E_errf_newline_in_name(istream); UNREACHED; case EFN_BUILTIN: E_errf_newline_in_builtin(istream); UNREACHED; case EFN_STRING: E_errf_newline_in_string(istream); UNREACHED; } } static void error_file_illegal_escape(IStreamP istream, ErrorFileTokenT type) { switch (type)EXHAUSTIVE { case EFN_NAME: E_errf_illegal_escape_in_name(istream); UNREACHED; case EFN_BUILTIN: E_errf_illegal_esc_in_builtin(istream); UNREACHED; case EFN_STRING: E_errf_illegal_escape_in_string(istream); UNREACHED; } } static void error_file_eof(IStreamP istream, ErrorFileTokenT type) { switch (type)EXHAUSTIVE { case EFN_NAME: E_errf_eof_in_name(istream); UNREACHED; case EFN_BUILTIN: E_errf_eof_in_builtin(istream); UNREACHED; case EFN_STRING: E_errf_eof_in_string(istream); UNREACHED; } } static void error_file_read_until(IStreamP istream, char term, ErrorFileTokenT type, ErrorFileLexP token) { DStringT dstring; dstring_init(&dstring); for (;;) { char c; redo: switch (c = ISTREAM_READ_CHAR(istream)) { case '\0': ISTREAM_HANDLE_NULL(istream, redo, eof); error_file_null_character(istream, type); UNREACHED; case '\n': istream_inc_line(istream); error_file_newline(istream, type); UNREACHED; default: if (c == term) { CStringP tmp; tmp = dstring_to_cstring(&dstring); dstring_destroy(&dstring); token->u.string = tmp; return; } else if (c == '\\') { switch (istream_read_escaped_char(istream, &c))EXHAUSTIVE { case ISTREAM_STAT_READ_CHAR: if (c == '\0') { error_file_null_character(istream, type); UNREACHED; } dstring_append_char(&dstring, c); break; case ISTREAM_STAT_SYNTAX_ERROR: error_file_illegal_escape(istream, type); UNREACHED; case ISTREAM_STAT_NO_CHAR: /*NOTHING*/ break; } } else { dstring_append_char(&dstring, c); } break; } } eof: error_file_eof(istream, type); UNREACHED; } static void error_file_check_builtin(IStreamP istream, ErrorFileLexP token) { if (cstring_ci_equal(token->u.string, "strings")) { token->tag = EFTOKEN_BLT_STRINGS; } else if (cstring_ci_equal(token->u.string, "prefix")) { token->tag = EFTOKEN_BLT_PREFIX; } else if (cstring_ci_equal(token->u.string, "errors")) { token->tag = EFTOKEN_BLT_ERRORS; } else { E_errf_unknown_builtin(istream, token->u.string); UNREACHED; } DEALLOCATE(token->u.string); } static void error_file_next_token(IStreamP istream, ErrorFileLexP token) { char c; if (error_file_skip_white_space(istream, &c)) { switch (c) { case '%': error_file_read_until(istream, '%', EFN_BUILTIN, token); error_file_check_builtin(istream, token); break; case '\'': error_file_read_until(istream, '\'', EFN_NAME, token); token->tag = EFTOKEN_NAME; break; case '"': error_file_read_until(istream, '"', EFN_STRING, token); token->tag = EFTOKEN_STRING; break; default: E_errf_illegal_character(istream, c); UNREACHED; } } else { token->tag = EFTOKEN_EOF; } } static void error_file_parse_strings(IStreamP istream, ErrorFileLexP token) { while (error_file_next_token(istream, token), (token->tag == EFTOKEN_NAME)) { CStringP name = token->u.string; if (error_file_next_token(istream, token), (token->tag != EFTOKEN_STRING)) { E_errf_expected_string(istream); UNREACHED; } else if (!error_redefine_string(name, token->u.string)) { E_errf_unknown_string(istream, name); UNREACHED; } DEALLOCATE(name); } } static void error_file_parse_prefix(IStreamP istream, ErrorFileLexP token) { error_file_next_token(istream, token); if (token->tag != EFTOKEN_STRING) { E_errf_expected_string(istream); UNREACHED; } else if (!error_set_prefix_message(token->u.string)) { E_errf_illegal_message(istream, token->u.string); UNREACHED; } DEALLOCATE(token->u.string); error_file_next_token(istream, token); } static void error_file_parse_errors(IStreamP istream, ErrorFileLexP token) { while (error_file_next_token(istream, token), (token->tag == EFTOKEN_NAME)) { CStringP name = token->u.string; error_file_next_token(istream, token); if (token->tag != EFTOKEN_STRING) { E_errf_expected_string(istream); UNREACHED; } else { switch (error_redefine_error(name, token->u.string))EXHAUSTIVE { case ERROR_STATUS_BAD_ERROR: E_errf_unknown_error(istream, name); UNREACHED; case ERROR_STATUS_BAD_MESSAGE: E_errf_illegal_message(istream, token->u.string); UNREACHED; case ERROR_STATUS_SUCCESS: /*NOTHING*/ break; } } DEALLOCATE(name); DEALLOCATE(token->u.string); } } /*--------------------------------------------------------------------------*/ void error_file_parse(CStringP name, BoolT must_open) { IStreamT istream; ErrorFileLexT token; if (istream_open(&istream, name)) { error_file_next_token(&istream, &token); while (token.tag != EFTOKEN_EOF) { switch (token.tag) { case EFTOKEN_BLT_STRINGS: error_file_parse_strings(&istream, &token); break; case EFTOKEN_BLT_PREFIX: error_file_parse_prefix(&istream, &token); break; case EFTOKEN_BLT_ERRORS: error_file_parse_errors(&istream, &token); break; default: E_errf_expected_section(&istream); UNREACHED; } } istream_close(&istream); } else if (must_open) { E_errf_cannot_open(name); UNREACHED; } } /* * Local variables(smf): * eval: (include::add-path-entry "../os-interface" "../generated") * end: **/