Implemented nbt condition

2 files changed, 247 insertions, 0 deletions

diff --git a/defaults/src/main/java/shcm/shsupercm/fabric/citresewn/defaults/cit/conditions/ConditionNBT.java b/defaults/src/main/java/shcm/shsupercm/fabric/citresewn/defaults/cit/conditions/ConditionNBT.java
new file mode 100644
index 0000000..09ae08e
--- /dev/null
+++ b/defaults/src/main/java/shcm/shsupercm/fabric/citresewn/defaults/cit/conditions/ConditionNBT.java
@@ -0,0 +1,244 @@
+package shcm.shsupercm.fabric.citresewn.defaults.cit.conditions;
+
+import io.shcm.shsupercm.fabric.fletchingtable.api.Entrypoint;
+import net.minecraft.nbt.*;
+import net.minecraft.text.Text;
+import shcm.shsupercm.fabric.citresewn.api.CITConditionContainer;
+import shcm.shsupercm.fabric.citresewn.cit.CITCondition;
+import shcm.shsupercm.fabric.citresewn.cit.CITContext;
+import shcm.shsupercm.fabric.citresewn.ex.CITParsingException;
+import shcm.shsupercm.fabric.citresewn.pack.format.PropertyGroup;
+import shcm.shsupercm.fabric.citresewn.pack.format.PropertyValue;
+
+import java.util.Locale;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
+
+public class ConditionNBT extends CITCondition {
+    @Entrypoint(CITConditionContainer.ENTRYPOINT)
+    public static final CITConditionContainer<ConditionNBT> CONTAINER = new CITConditionContainer<>(ConditionNBT.class, ConditionNBT::new,
+            "nbt");
+
+    protected String[] path;
+
+    protected StringMatcher matchString = null;
+    protected NbtInt matchInteger = null;
+    protected NbtByte matchByte = null;
+    protected NbtFloat matchFloat = null;
+    protected NbtDouble matchDouble = null;
+    protected NbtLong matchLong = null;
+    protected NbtShort matchShort = null;
+    protected NbtCompound matchCompound = null;
+
+    @Override
+    public void load(PropertyValue value, PropertyGroup properties) throws CITParsingException {
+        if (value.keyMetadata() == null || value.keyMetadata().isEmpty())
+            throw new CITParsingException("Missing nbt path", properties, value.position());
+
+        path = value.keyMetadata().split("\\.");
+        for (String s : path)
+            if (s.isEmpty())
+                throw new CITParsingException("Path segment cannot be empty", properties, value.position());
+
+        try {
+            if (value.value().startsWith("regex:"))
+                matchString = new StringMatcher.RegexMatcher(value.value().substring(6));
+            else if (value.value().startsWith("iregex:"))
+                matchString = new StringMatcher.IRegexMatcher(value.value().substring(7));
+            else if (value.value().startsWith("pattern:"))
+                matchString = new StringMatcher.PatternMatcher(value.value().substring(8));
+            else if (value.value().startsWith("ipattern:"))
+                matchString = new StringMatcher.IPatternMatcher(value.value().substring(9));
+            else
+                matchString = new StringMatcher.DirectMatcher(value.value());
+        } catch (PatternSyntaxException e) {
+            throw new CITParsingException("Malformatted regex expression", properties, value.position(), e);
+        } catch (Exception ignored) { }
+        try {
+            if (value.value().startsWith("#"))
+                matchInteger = NbtInt.of(Integer.parseInt(value.value().substring(1).toLowerCase(Locale.ENGLISH), 16));
+            else if (value.value().startsWith("0x"))
+                matchInteger = NbtInt.of(Integer.parseInt(value.value().substring(2).toLowerCase(Locale.ENGLISH), 16));
+            else
+                matchInteger = NbtInt.of(Integer.parseInt(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchByte = NbtByte.of(Byte.parseByte(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchFloat = NbtFloat.of(Float.parseFloat(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchDouble = NbtDouble.of(Double.parseDouble(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchLong = NbtLong.of(Long.parseLong(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchShort = NbtShort.of(Short.parseShort(value.value()));
+        } catch (Exception ignored) { }
+        try {
+            matchCompound = StringNbtReader.parse(value.value());
+        } catch (Exception ignored) { }
+    }
+
+    @Override
+    public boolean test(CITContext context) {
+        return testPath(context.stack.getNbt(), 0);
+    }
+
+    protected boolean testPath(NbtElement element, int pathIndex) {
+        if (element == null)
+            return false;
+
+        if (pathIndex >= path.length)
+            return testValue(element);
+
+        final String path = this.path[pathIndex];
+        if (path.equals("*")) {
+            if (element instanceof NbtCompound compound) {
+                for (NbtElement subElement : compound.entries.values())
+                    if (testPath(subElement, pathIndex + 1))
+                        return true;
+            } else if (element instanceof NbtList list) {
+                for (NbtElement subElement : list)
+                    if (testPath(subElement, pathIndex + 1))
+                        return true;
+            }
+        } else {
+            if (element instanceof NbtCompound compound)
+                return testPath(compound.get(path), pathIndex + 1);
+            else if (element instanceof NbtList list)
+                try {
+                    return testPath(list.get(Integer.parseInt(path)), pathIndex + 1);
+                } catch (NumberFormatException | IndexOutOfBoundsException ignored) { }
+        }
+
+        return false;
+    }
+
+    private boolean testValue(NbtElement element) {
+        try {
+            if (element instanceof NbtString nbtString) //noinspection ConstantConditions
+                return matchString.matches(nbtString.asString()) || matchString.matches(Text.Serializer.fromJson(nbtString.asString()).getString());
+            else if (element instanceof NbtInt nbtInt)
+                return nbtInt.equals(matchInteger);
+            else if (element instanceof NbtByte nbtByte)
+                return nbtByte.equals(matchByte);
+            else if (element instanceof NbtFloat nbtFloat)
+                return nbtFloat.equals(matchFloat);
+            else if (element instanceof NbtDouble nbtDouble)
+                return nbtDouble.equals(matchDouble);
+            else if (element instanceof NbtLong nbtLong)
+                return nbtLong.equals(matchLong);
+            else if (element instanceof NbtShort nbtShort)
+                return nbtShort.equals(matchShort);
+            else if (element instanceof NbtCompound nbtCompound)
+                return NbtHelper.matches(matchCompound, nbtCompound, true);
+        } catch (Exception ignored) { }
+        return false;
+    }
+
+    protected static abstract class StringMatcher {
+        public abstract boolean matches(String value);
+
+        public static class DirectMatcher extends StringMatcher {
+            protected final String pattern;
+
+            public DirectMatcher(String pattern) {
+                this.pattern = pattern;
+            }
+
+            @Override
+            public boolean matches(String value) {
+                return pattern.equals(value);
+            }
+        }
+
+        public static class RegexMatcher extends StringMatcher {
+            protected final Pattern pattern;
+
+            public RegexMatcher(String pattern) {
+                this(Pattern.compile(pattern));
+            }
+
+            protected RegexMatcher(Pattern pattern) {
+                this.pattern = pattern;
+            }
+
+            @Override
+            public boolean matches(String value) {
+                return this.pattern.matcher(value).matches();
+            }
+        }
+
+        public static class PatternMatcher extends StringMatcher {
+            protected final String pattern;
+
+            public PatternMatcher(String pattern) {
+                this.pattern = pattern;
+            }
+
+            @Override
+            public boolean matches(String value) {
+                return matchesPattern(value, this.pattern, 0, value.length(), 0, pattern.length());
+            }
+
+            /**
+             * Author: Paul "prupe" Rupe<br>
+             * Taken and modified from MCPatcher under public domain licensing.<br>
+             * https://bitbucket.org/prupe/mcpatcher/src/1aa45839b2cd029143809edfa60ec59e5ef75f80/newcode/src/com/prupe/mcpatcher/mal/nbt/NBTRule.java#lines-269:301
+             */
+            protected boolean matchesPattern(String value, String pattern, int curV, int maxV, int curG, int maxG) {
+                for (; curG < maxG; curG++, curV++) {
+                    char g = pattern.charAt(curG);
+                    if (g == '*') {
+                        while (true) {
+                            if (matchesPattern(value, pattern, curV, maxV, curG + 1, maxG)) {
+                                return true;
+                            }
+                            if (curV >= maxV) {
+                                break;
+                            }
+                            curV++;
+                        }
+                        return false;
+                    } else if (curV >= maxV) {
+                        break;
+                    } else if (g == '?') {
+                        continue;
+                    }
+                    if (g == '\\' && curG + 1 < maxG) {
+                        curG++;
+                        g = pattern.charAt(curG);
+                    }
+
+                    if (!charsEqual(g, value.charAt(curV)))
+                        return false;
+                }
+                return curG == maxG && curV == maxV;
+            }
+
+            protected boolean charsEqual(char p, char v) {
+                return p == v;
+            }
+        }
+
+        public static class IRegexMatcher extends RegexMatcher {
+            public IRegexMatcher(String pattern) {
+                super(Pattern.compile(pattern, Pattern.CASE_INSENSITIVE));
+            }
+        }
+
+        public static class IPatternMatcher extends PatternMatcher {
+            public IPatternMatcher(String pattern) {
+                super(pattern.toLowerCase(Locale.ROOT));
+            }
+
+            @Override
+            protected boolean charsEqual(char p, char v) {
+                return p == v || p == Character.toLowerCase(v);
+            }
+        }
+    }
+}
diff --git a/defaults/src/main/resources/citresewn-defaults.accesswidener b/defaults/src/main/resources/citresewn-defaults.accesswidener
index 22b4947..739fc5e 100644
--- a/defaults/src/main/resources/citresewn-defaults.accesswidener
+++ b/defaults/src/main/resources/citresewn-defaults.accesswidener
@@ -1,5 +1,8 @@
 accessWidener v1 named
 
+# ConditionNBT
+accessible   field   net/minecraft/nbt/NbtCompound entries Ljava/util/Map;
+
 # TypeItem
 accessible   class   net/minecraft/client/render/model/json/ModelOverrideList$BakedOverride
 accessible   class   net/minecraft/client/render/model/json/ModelOverrideList$InlinedCondition