improved polygon conversion in pdf2pdf

[swftools.git] / lib / q.c

diff --git a/lib/q.c b/lib/q.c
index 64934a6..fc9f868 100644 (file)
--- a/lib/q.c
+++ b/lib/q.c
@@ -524,13 +524,14 @@ void trie_rollback(trie_t*t)
 
 
 // ------------------------------- crc32 --------------------------------------
-static unsigned int*crc32 = 0;
+static unsigned int crc32[256];
+static char crc32_initialized=0;
 static void crc32_init(void)
 {
     int t;
-    if(crc32) 
+    if(crc32_initialized) 
         return;
-    crc32= (unsigned int*)rfx_alloc(sizeof(unsigned int)*256);
+    crc32_initialized = 1;
     for(t=0; t<256; t++) {
         unsigned int c = t;
         int s;
@@ -643,14 +644,12 @@ char* string_escape(string_t*str)
 
 unsigned int crc32_add_byte(unsigned int checksum, unsigned char b) 
 {
-    if(!crc32)
-        crc32_init();
+    crc32_init();
     return checksum>>8 ^ crc32[(b^checksum)&0xff];
 }
 unsigned int crc32_add_string(unsigned int checksum, const char*s)
 {
-    if(!crc32)
-        crc32_init();
+    crc32_init();
     if(!s)
         return checksum;
     while(*s) {
@@ -664,8 +663,7 @@ unsigned int string_hash(const string_t*str)
 {
     int t;
     unsigned int checksum = 0;
-    if(!crc32)
-        crc32_init();
+    crc32_init();
     for(t=0;t<str->len;t++) {
         checksum = checksum>>8 ^ crc32[(str->str[t]^checksum)&0xff];
     }
@@ -675,8 +673,7 @@ unsigned int string_hash2(const char*str)
 {
     unsigned int checksum = 0;
     const char*p = str;
-    if(!crc32)
-        crc32_init();
+    crc32_init();
     while(*p) {
         checksum = checksum>>8 ^ crc32[(*p^checksum)&0xff];
         p++;
@@ -1162,6 +1159,34 @@ char dict_del(dict_t*h, const void*key)
     return 0;
 }
 
+char dict_del2(dict_t*h, const void*key, void*data)
+{
+    if(!h->num)
+        return 0;
+    unsigned int hash = h->key_type->hash(key) % h->hashsize;
+    dictentry_t*head = h->slots[hash];
+    dictentry_t*e = head, *prev=0;
+    while(e) {
+        if(h->key_type->equals(e->key, key) && e->data == data) {
+            dictentry_t*next = e->next;
+            h->key_type->free(e->key);
+            memset(e, 0, sizeof(dictentry_t));
+            rfx_free(e);
+            if(e == head) {
+                h->slots[hash] = next;
+            } else {
+                assert(prev);
+                prev->next = next;
+            }
+            h->num--;
+            return 1;
+        }
+        prev = e;
+        e = e->next;
+    }
+    return 0;
+}
+
 dictentry_t* dict_get_slot(dict_t*h, const void*key)
 {
     if(!h->num)