rodecomp/Source/Utility/Lexicon/LexiconMatcher.cpp
ragnarok-clanker bf6a44c117 Group Utility units into subsystem folders and require OFFSET provenance
Move Lexicon*, Text (TextTokens, TextEscapes, Base64), Math/RadialGrid, Hash (MD5, XxHash32) and Cipher (Rijndael, XorBytes) into Source/Utility subfolders; update includes, guards, compile.json and CMakeLists.txt. Backfill // OFFSET: above every standalone // FUNCTION: block (89 IDs, addresses from the symbol database) and make it mandatory in CODING_RULES.md and AGENTS.md. Remove the MatchLexicon cast chain.
2026-10-26 23:41:07 +01:00

66 lines
1.4 KiB
C++

#include "Utility/Lexicon/LexiconMatcher.h"
// OFFSET: 0x00AC48E0
// FUNCTION: fn_17631
int __stdcall MatchLexicon(const unsigned char* data, int, const unsigned char* text, const unsigned char* end, int) {
if (*text == 0) {
return 1000;
}
int accepted = 0;
int matched = 0;
bool failed = false;
const unsigned char* entry = data;
while (text < end && !failed) {
if ((*entry & 0x40) != 0) {
return matched;
}
int offset = ((entry[0] & 0x3F) << 16) | (entry[1] << 8) | entry[2];
entry += 3;
const unsigned char* candidate = data + offset;
const int count = *candidate;
if (count < 0x20 && candidate[1] == *text) {
++offset;
for (int index = 0; index < count; ++index) {
if (data[offset++] != *text) {
failed = true;
break;
}
++matched;
++text;
const unsigned char marker = data[offset];
if (marker < 0x20) {
if ((marker & 2) != 0) {
accepted = matched;
}
if ((marker & 4) != 0) {
entry = data + offset + 1;
break;
}
++offset;
}
}
} else if (count >= *text) {
if (count != *text) {
return accepted;
}
++matched;
entry = candidate + 1;
++text;
if ((*entry & 0x80) != 0) {
accepted = matched;
}
}
if (*text == 0) {
return accepted;
}
}
return accepted;
}