/* Header for CCL (Code Conversion Language) interpreter.
- Copyright (C) 1995 Free Software Foundation, Inc.
Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
+ Licensed to the Free Software Foundation.
This file is part of GNU Emacs.
#ifndef _CCL_H
#define _CCL_H
+/* Macros for exit status of CCL program. */
+#define CCL_STAT_SUCCESS 0 /* Terminated successfully. */
+#define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input. */
+#define CCL_STAT_SUSPEND_BY_DST 2 /* Terminated by output buffer full. */
+#define CCL_STAT_INVALID_CMD 3 /* Terminated because of invalid
+ command. */
+#define CCL_STAT_QUIT 4 /* Terminated because of quit. */
+
/* Structure to hold information about running CCL code. Read
comments in the file ccl.c for the detail of each field. */
struct ccl_program {
int reg[8]; /* CCL registers, reg[7] is used for
condition flag of relational
operations. */
+ int private_state; /* CCL instruction may use this
+ for private use, mainly for preservation
+ internal states for suspending.
+ This variable is set to 0 when ccl is
+ set up. */
int last_block; /* Set to 1 while processing the last
block. */
int status; /* Exit status of the CCL program. */
int buf_magnification; /* Output buffer magnification. How
many times bigger the output buffer
should be than the input buffer. */
+ int stack_idx; /* How deep the call of CCL_Call is nested. */
};
/* This data type is used for the spec field of the structure
struct ccl_spec {
struct ccl_program decoder;
struct ccl_program encoder;
+ unsigned char valid_codes[256];
};
/* Alist of fontname patterns vs corresponding CCL program. */
extern Lisp_Object Vfont_ccl_encoder_alist;
+/* Setup fields of the structure pointed by CCL appropriately for the
+ execution of ccl program CCL_PROG (symbol or vector). */
+extern int setup_ccl_program P_ ((struct ccl_program *, Lisp_Object));
+
+extern int ccl_driver P_ ((struct ccl_program *, unsigned char *,
+ unsigned char *, int, int, int *));
+
+/* Vector of CCL program names vs corresponding program data. */
+extern Lisp_Object Vccl_program_table;
+
+/* Symbols of ccl program have this property, a value of the property
+ is an index for Vccl_protram_table. */
+extern Lisp_Object Qccl_program_idx;
+
#endif /* _CCL_H */