From 37865c5d5b53fd0427b6f22d0a13f830a74c3064 Mon Sep 17 00:00:00 2001 From: Simon Howard Date: Sun, 7 Sep 2008 21:03:09 +0000 Subject: Move dehacked code to doom/. Split dehacked string replacement code into common code and remove dependencies on deh_main.h. Subversion-branch: /branches/raven-branch Subversion-revision: 1210 --- src/deh_text.c | 254 --------------------------------------------------------- 1 file changed, 254 deletions(-) delete mode 100644 src/deh_text.c (limited to 'src/deh_text.c') diff --git a/src/deh_text.c b/src/deh_text.c deleted file mode 100644 index 853e30e4..00000000 --- a/src/deh_text.c +++ /dev/null @@ -1,254 +0,0 @@ -// Emacs style mode select -*- C++ -*- -//----------------------------------------------------------------------------- -// -// Copyright(C) 2005 Simon Howard -// -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License -// as published by the Free Software Foundation; either version 2 -// of the License, or (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA -// 02111-1307, USA. -// -//----------------------------------------------------------------------------- -// -// Parses Text substitution sections in dehacked files -// -//----------------------------------------------------------------------------- - -#include - -#include "doomtype.h" - -#include "z_zone.h" - -#include "deh_defs.h" -#include "deh_io.h" -#include "deh_main.h" - -typedef struct -{ - char *from_text; - char *to_text; -} deh_substitution_t; - -static deh_substitution_t **hash_table; -static int hash_table_entries; -static int hash_table_length = -1; - -// This is the algorithm used by glib - -static unsigned int strhash(char *s) -{ - char *p = s; - unsigned int h = *p; - - if (h) - { - for (p += 1; *p; p++) - h = (h << 5) - h + *p; - } - - return h; -} - -// Look up a string to see if it has been replaced with something else -// This will be used throughout the program to substitute text - -char *DEH_String(char *s) -{ - int entry; - - // Fallback if we have not initialised the hash table yet - - if (hash_table_length < 0) - return s; - - entry = strhash(s) % hash_table_length; - - while (hash_table[entry] != NULL) - { - if (!strcmp(hash_table[entry]->from_text, s)) - { - // substitution found! - - return hash_table[entry]->to_text; - } - - entry = (entry + 1) % hash_table_length; - } - - // no substitution found - - return s; -} - -static void DEH_AddToHashtable(deh_substitution_t *sub); - -static void IncreaseHashtable(void) -{ - deh_substitution_t **old_table; - int old_table_length; - int i; - - // save the old table - - old_table = hash_table; - old_table_length = hash_table_length; - - // double the size - - hash_table_length *= 2; - hash_table = Z_Malloc(sizeof(deh_substitution_t *) * hash_table_length, - PU_STATIC, NULL); - memset(hash_table, 0, sizeof(deh_substitution_t *) * hash_table_length); - - // go through the old table and insert all the old entries - - for (i=0; i 6) - { - IncreaseHashtable(); - } - - // find where to insert it - - entry = strhash(sub->from_text) % hash_table_length; - - while (hash_table[entry] != NULL) - { - entry = (entry + 1) % hash_table_length; - } - - hash_table[entry] = sub; - ++hash_table_entries; -} - -// Given a string length, find the maximum length of a -// string that can replace it. - -static int TXT_MaxStringLength(int len) -{ - // Enough bytes for the string and the NUL terminator - - len += 1; - - // All strings in doom.exe are on 4-byte boundaries, so we may be able - // to support a slightly longer string. - // Extend up to the next 4-byte boundary - - len += (4 - (len % 4)) % 4; - - // Less one for the NUL terminator. - - return len - 1; -} - -static void DEH_TextInit(void) -{ - // init hash table - - hash_table_entries = 0; - hash_table_length = 16; - hash_table = Z_Malloc(sizeof(deh_substitution_t *) * hash_table_length, - PU_STATIC, NULL); - memset(hash_table, 0, sizeof(deh_substitution_t *) * hash_table_length); -} - -static void *DEH_TextStart(deh_context_t *context, char *line) -{ - deh_substitution_t *sub; - int fromlen, tolen; - int i; - - if (sscanf(line, "Text %i %i", &fromlen, &tolen) != 2) - { - DEH_Warning(context, "Parse error on section start"); - return NULL; - } - - // Only allow string replacements that are possible in Vanilla Doom. - // Chocolate Doom is unforgiving! - - if (!deh_allow_long_strings && tolen > TXT_MaxStringLength(fromlen)) - { - DEH_Error(context, "Replacement string is longer than the maximum " - "possible in doom.exe"); - return NULL; - } - - sub = Z_Malloc(sizeof(deh_substitution_t), PU_STATIC, NULL); - sub->from_text = Z_Malloc(fromlen + 1, PU_STATIC, NULL); - sub->to_text = Z_Malloc(tolen + 1, PU_STATIC, NULL); - - // read in the "from" text - - for (i=0; ifrom_text[i] = c; - } - - sub->from_text[fromlen] = '\0'; - - // read in the "to" text - - for (i=0; ito_text[i] = c; - } - sub->to_text[tolen] = '\0'; - - DEH_AddToHashtable(sub); - - return NULL; -} - -static void DEH_TextParseLine(deh_context_t *context, char *line, void *tag) -{ - // not used -} - -deh_section_t deh_section_text = -{ - "Text", - DEH_TextInit, - DEH_TextStart, - DEH_TextParseLine, - NULL, - NULL, -}; - -- cgit v1.2.3