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#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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