79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
// Copyright 2022 Dietrich Epp.
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// This file is part of SyncFiles. SyncFiles is licensed under the terms of the
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// Mozilla Public License, version 2.0. See LICENSE.txt for details.
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#ifndef CONVERT_CONVERT_H
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#define CONVERT_CONVERT_H
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/* convert.h - character set conversion routines. */
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#include "lib/defs.h"
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enum {
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/* Constants for CR and LF. Note that we should not use '\n' or '\r'
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anywhere, because these character constants may have unexpected values on
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certain old Mac OS compilers, depending on the compiler settings. In
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particular, the values of '\n' and '\r' will be swapped. */
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kCharLF = 10,
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kCharCR = 13,
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/* Constant for substitution character: '?'. */
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kCharSubstitute = 63
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};
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typedef enum {
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/* Don't translite line breaks. */
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kLineBreakKeep,
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/* Convert line breaks to LF. */
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kLineBreakLF,
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/* Convert line breaks to CR. */
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kLineBreakCR,
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/* Convert line breaks to CR LF. */
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kLineBreakCRLF
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} LineBreakConversion;
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/* Directions that the converter runs in. */
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typedef enum { kToUTF8, kFromUTF8 } ConvertDirection;
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/* Get the character map used for the given Mac OS script and region codes.
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Return -1 if no known character map exists. */
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int GetCharmap(int script, int region);
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/* The state of a converter. Must be zeroed prior to first conversion. */
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struct ConverterState {
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UInt32 data;
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};
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/* Implementation function for building a converter. */
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typedef ErrorCode (*ConvertBuildf)(Handle *out, Handle data, Size datasz);
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/* Implementation function for running a converter. */
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typedef void (*ConvertRunf)(const void *cvtptr, LineBreakConversion lc,
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struct ConverterState *stateptr, UInt8 **optr,
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UInt8 *oend, const UInt8 **iptr, const UInt8 *iend);
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/* A converter. The converter can be freed by disposing the handle. */
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struct Converter {
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Handle data;
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ConvertRunf run;
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};
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/* Build a converter from the given conversion table data. */
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int ConverterBuild(struct Converter *c, Handle data, Size datasz,
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ConvertDirection direction);
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/* Engine 1: extended ASCII */
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ErrorCode Convert1fBuild(Handle *out, Handle data, Size datasz);
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void Convert1fRun(const void *cvtptr, LineBreakConversion lc,
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struct ConverterState *stateptr, UInt8 **optr, UInt8 *oend,
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const UInt8 **iptr, const UInt8 *iend);
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ErrorCode Convert1rBuild(Handle *out, Handle data, Size datasz);
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void Convert1rRun(const void *cvtptr, LineBreakConversion lc,
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struct ConverterState *stateptr, UInt8 **optr, UInt8 *oend,
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const UInt8 **iptr, const UInt8 *iend);
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#endif
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