ref: e4aa75977e5a2e7ace5e7742193cfef427adaa77
dir: /src/doom/deh_text.c/
// 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 <stdio.h> #include <string.h> #include "doomtype.h" #include "z_zone.h" #include "deh_defs.h" #include "deh_io.h" #include "deh_main.h" // 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_TextStart(deh_context_t *context, char *line) { char *from_text, *to_text; 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; } from_text = Z_Malloc(fromlen + 1, PU_STATIC, NULL); to_text = Z_Malloc(tolen + 1, PU_STATIC, NULL); // read in the "from" text for (i=0; i<fromlen; ++i) { int c; c = DEH_GetChar(context); from_text[i] = c; } from_text[fromlen] = '\0'; // read in the "to" text for (i=0; i<tolen; ++i) { int c; c = DEH_GetChar(context); to_text[i] = c; } to_text[tolen] = '\0'; DEH_AddStringReplacement(from_text, to_text); return NULL; } static void DEH_TextParseLine(deh_context_t *context, char *line, void *tag) { // not used } deh_section_t deh_section_text = { "Text", NULL, DEH_TextStart, DEH_TextParseLine, NULL, NULL, };