1 files changed, 228 insertions, 0 deletions
diff --git a/WWW/Library/Implementation/HTChunk.h b/WWW/Library/Implementation/HTChunk.h
new file mode 100644
index 0000000..fa51c99
--- /dev/null
+++ b/WWW/Library/Implementation/HTChunk.h
@@ -0,0 +1,228 @@
+/*
+ * $LynxId: HTChunk.h,v 1.21 2020/01/21 22:02:43 tom Exp $
+ *
+ *				     HTChunk: Flexible array handling for libwww
+ *					CHUNK HANDLING:
+ *					FLEXIBLE ARRAYS
+ *
+ * This module implements a flexible array.  It is a general utility module.  A
+ * chunk is a structure which may be extended.	These routines create and
+ * append data to chunks, automatically reallocating them as necessary.
+ *
+ */
+#ifndef HTCHUNK_H
+#define HTCHUNK_H 1
+
+#ifndef HTUTILS_H
+#include <HTUtils.h>
+#endif
+
+#include <UCMap.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    typedef struct _HTChunk HTChunk;
+
+    struct _HTChunk {
+	int size;		/* In bytes                     */
+	int growby;		/* Allocation unit in bytes     */
+	int allocated;		/* Current size of *data        */
+	char *data;		/* Pointer to malloc'd area or 0 */
+	int failok;		/* allowed to fail without exiting program? */
+	HTChunk *next;		/* pointer to the next chunk */
+    };
+
+/*
+ * Initialize a chunk's allocation data and allocation-increment.
+ */
+    extern void HTChunkInit(HTChunk *ch, int grow);
+
+/*
+ *
+ * Create new chunk
+ *
+ *   ON ENTRY,
+ *
+ *   growby		The number of bytes to allocate at a time when the chunk
+ *			is later extended.  Arbitrary but normally a trade-off
+ *			of time vs memory.
+ *
+ *   ON EXIT,
+ *
+ *   returns		A chunk pointer to the new chunk,
+ *
+ */
+
+    extern HTChunk *HTChunkCreate(int growby);
+
+/*
+ *  Create a chunk for which an allocation error is not a fatal application
+ *  error if failok != 0, but merely resets the chunk.  When using a chunk
+ *  created this way, the caller should always check whether the contents
+ *  are ok each time after data have been appended.
+ *  The create call may also fail and will return NULL in that case. - kw
+ */
+    extern HTChunk *HTChunkCreateMayFail(int growby, int failok);
+
+/*
+ *  Like HTChunkCreate but with initial allocation - kw
+ *
+ */
+    extern HTChunk *HTChunkCreate2(int growby, size_t needed);
+
+/*
+ *
+ * Free a chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   ON EXIT,
+ *
+ *   ch			is invalid and may not be used.
+ *
+ */
+
+    extern void HTChunkFree(HTChunk *ch);
+
+/*
+ *
+ * Clear a chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   ON EXIT,
+ *
+ *   *ch		The size of the chunk is zero.
+ *
+ */
+
+    extern void HTChunkClear(HTChunk *ch);
+
+/*
+ *
+ * Realloc a chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   growby		growby
+ *
+ *   ON EXIT,
+ *
+ *   *ch		Expanded by growby
+ *
+ */
+
+    extern BOOL HTChunkRealloc(HTChunk *ch, int growby);
+
+/*
+ *
+ * Ensure a chunk has a certain space in
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   s			The size required
+ *
+ *   ON EXIT,
+ *
+ *   *ch		Has size at least s
+ *
+ */
+
+    extern void HTChunkEnsure(HTChunk *ch, int s);
+
+/*
+ *
+ * Append a character to a  chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   c			The character to be appended
+ *
+ *   ON EXIT,
+ *
+ *   *ch		Is one character bigger
+ *
+ */
+    extern void HTChunkPutc(HTChunk *ch, unsigned c);
+
+    extern void HTChunkPutb(HTChunk *ch, const char *b, int l);
+
+    extern void HTChunkPutUtf8Char(HTChunk *ch, UCode_t code);
+
+/*
+ * Append a string to a  chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   str		Points to a zero-terminated string to be appended
+ *
+ *   ON EXIT,
+ *
+ *   *ch		Is bigger by strlen(str)
+ *
+ */
+
+    extern void HTChunkPuts(HTChunk *ch, const char *str);
+
+/*
+ *
+ * Append a zero character to a  chunk
+ *
+ */
+
+/*
+ *
+ *   ON ENTRY,
+ *
+ *   ch			A valid chunk pointer made by HTChunkCreate()
+ *
+ *   ON EXIT,
+ *
+ *   *ch		Is one character bigger
+ *
+ */
+
+    extern void HTChunkTerminate(HTChunk *ch);
+
+/* like the above but no realloc: extend to another chunk if necessary */
+/*
+ *
+ * Append a character (string, data) to a chunk
+ *
+ *   ON ENTRY,
+ *
+ *   ch                        A valid chunk pointer made by HTChunkCreate()
+ *
+ *   c                 The character to be appended
+ *
+ *   ON EXIT,
+ *
+ *   returns           original chunk or a pointer to the new chunk
+ *                     (original chunk is referenced to the new one
+ *                     by the field 'next')
+ *
+ */
+    extern HTChunk *HTChunkPutc2(HTChunk *ch, int c);
+    extern HTChunk *HTChunkPuts2(HTChunk *ch, const char *str);
+    extern HTChunk *HTChunkPutb2(HTChunk *ch, const char *b, int l);
+
+/* New pool infrastructure: UNlike the above, store data using alignment */
+    extern HTChunk *HTChunkPutb0(HTChunk *ch, const char *b, int l);
+
+#ifdef __cplusplus
+}
+#endif
+#endif				/* HTCHUNK_H */