From c068f22329d5cc722622a2183bbb22eef2093df7 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Mon, 24 Aug 2026 11:16:07 +0200
Subject: initial import

---
 tool_src/QvLib/QvName.cpp | 126 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 tool_src/QvLib/QvName.cpp

(limited to 'tool_src/QvLib/QvName.cpp')

diff --git a/tool_src/QvLib/QvName.cpp b/tool_src/QvLib/QvName.cpp
new file mode 100644
index 0000000..626c6b8
--- /dev/null
+++ b/tool_src/QvLib/QvName.cpp
@@ -0,0 +1,126 @@
+#include <QvString.h>
+#include <ctype.h>
+
+#define CHUNK_SIZE	4000
+
+struct QvNameChunk {
+    char		mem[CHUNK_SIZE];
+    char		*curByte;
+    int			bytesLeft;
+    struct QvNameChunk	*next;
+};
+
+int		QvNameEntry::nameTableSize;
+QvNameEntry **	QvNameEntry::nameTable;
+struct QvNameChunk *QvNameEntry::chunk;	    	
+
+void
+QvNameEntry::initClass()
+{
+    int i;
+
+    
+    nameTableSize = 1999;
+    nameTable	  = new QvNameEntry *[nameTableSize];
+
+    for (i = 0; i < nameTableSize; i++)
+	nameTable[i] = NULL;
+
+    chunk = NULL;
+}
+
+const QvNameEntry *
+QvNameEntry::insert(const char *s)
+{
+    u_long		h = QvString::hash(s);
+    u_long		i;
+    QvNameEntry		*entry;
+    QvNameEntry		*head;
+
+    if (nameTableSize == 0)
+	initClass();
+
+    i = h % nameTableSize;
+    entry = head = nameTable[i];
+
+    while (entry != NULL) {
+	if (entry->hashValue == h && entry->isEqual(s))
+	    break;
+	entry = entry->next;
+    }
+
+    if (entry == NULL) {
+
+	int len = strlen(s) + 1;
+
+	if (len >= CHUNK_SIZE)
+	    s = strdup(s);
+
+	else {
+
+	    if (chunk == NULL || chunk->bytesLeft < len) {
+		struct QvNameChunk	*newChunk = new QvNameChunk;
+
+		newChunk->curByte   = newChunk->mem;
+		newChunk->bytesLeft = CHUNK_SIZE;
+		newChunk->next      = chunk;
+
+		chunk = newChunk;
+	    }
+
+	    strcpy(chunk->curByte, s);
+	    s = chunk->curByte;
+
+	    chunk->curByte   += len;
+	    chunk->bytesLeft -= len;
+	}
+
+	entry = new QvNameEntry(s, h, head);
+	nameTable[i] = entry;
+    }
+
+    return entry;
+}
+
+QvName::QvName()
+{
+    entry = QvNameEntry::insert("");
+}
+
+QvBool
+QvName::isIdentStartChar(char c)
+{
+    if (isdigit(c)) return FALSE;
+
+    return isIdentChar(c);
+}
+
+QvBool
+QvName::isIdentChar(char c)
+{
+    if (isalnum(c) || c == '_') return TRUE;
+
+    return FALSE;
+}
+
+QvBool
+QvName::isNodeNameStartChar(char c)
+{
+    if (isdigit(c)) return FALSE;
+
+    return isIdentChar(c);
+}
+
+static const char
+badCharacters[] = "+\'\"\\{}";
+
+QvBool
+QvName::isNodeNameChar(char c)
+{
+    if (isalnum(c)) return TRUE;
+
+    if ((strchr(badCharacters, c) != NULL) ||
+	isspace(c) || iscntrl(c)) return FALSE;
+
+    return TRUE;
+}
-- 
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