tidy-html5/src/message.h

271 lines
8.8 KiB
C

#ifndef __MESSAGE_H__
#define __MESSAGE_H__
/******************************************************************************
* @file
* Provides General Message Writing Routines
*
* This module handles LibTidy's high level output routines, as well as
* provides lookup functions and management for keys used for retrieval
* of these messages.
*
* LibTidy emits two general types of output:
*
* - Reports, which contain data relating to what Tidy discovered in your
* source file, and/or what Tidy did to your source file. In some cases
* general information about your source file is emitted as well. Reports
* are emitted in the current output buffer, but LibTidy users will probably
* prefer to hook into a callback in order to take advantage of the data
* that are available in a more flexible way.
*
* - Dialogue, consisting of footnotes related to your source file, and of
* general information that's not related to your source file in particular.
* This is also written to the current output buffer when appropriate, and
* available via callbacks.
*
* Report information typically takes the form of a warning, an error, info,
* etc., and the output routines keep track of the count of these.
*
* The preferred way of handling Tidy diagnostics output is either
* - define a new output sink, or
* - use a message filter callback routine.
*
* @author HTACG, et al (consult git log)
*
* @copyright
* Copyright (c) 1998-2017 World Wide Web Consortium (Massachusetts
* Institute of Technology, European Research Consortium for Informatics
* and Mathematics, Keio University) and HTACG.
* @par
* All Rights Reserved.
* @par
* See `tidy.h` for the complete license.
*
* @date Additional updates: consult git log
*
******************************************************************************/
#include "forward.h"
/** @addtogroup internal_api */
/** @{ */
/***************************************************************************//**
** @defgroup message_releaseinfo Tidy Release Information
**
** These functions return information about the current release version date
** and version number. Note that the latest release date or the highest
** version number alone do not guarantee the latest Tidy release, as we may
** backport important fixes to older releases of Tidy.
**
** @{
******************************************************************************/
/**
* Returns the release date of this instance of HTML Tidy.
*/
ctmbstr TY_(ReleaseDate)(void);
/**
* Returns the release version of this instance of HTML Tidy.
*/
ctmbstr TY_(tidyLibraryVersion)(void);
/** @} message_releaseinfo group */
/***************************************************************************//**
** @defgroup message_reporting Report and Dialogue Writing Functions
**
** These simple functions perform the vast majority of Tidy's output, and
** one these should be your first choice when adding your own output.
**
** A report is typically diagnostic output that is generated each time Tidy
** detects an issue in your document or makes a change. A dialogue is a piece
** of information such as a summary, a footnote, or other non-tabular data.
** Some of these functions emit multiple reports or dialogue in order to
** effect a summary.
**
** @{
******************************************************************************/
/** @name General Report Writing
** If one of the convenience reporting functions does not fit your required
** message signature, then this designated reporting function will fit the
** bill. Be sure to see if a message formatter exists that can handle the
** variable arguments.
*/
/** @{ */
/**
* The designated report writing function. When a proper formatter exists,
* this one function can hanle all report output.
*/
void TY_(Report)(TidyDocImpl* doc, Node *element, Node *node, uint code, ...);
/** @} */
/** @name Convenience Reporting Functions
** These convenience reporting functions are able to handle the bulk of Tidy's
** necessary reporting, and avoid the danger of using a variadic if you are
** unfamiliar with Tidy.
*/
/** @{ */
void TY_(ReportAccessError)( TidyDocImpl* doc, Node* node, uint code );
void TY_(ReportAttrError)(TidyDocImpl* doc, Node *node, AttVal *av, uint code);
void TY_(ReportBadArgument)( TidyDocImpl* doc, ctmbstr option );
void TY_(ReportEntityError)( TidyDocImpl* doc, uint code, ctmbstr entity, int c );
void TY_(ReportFileError)( TidyDocImpl* doc, ctmbstr file, uint code );
void TY_(ReportEncodingError)(TidyDocImpl* doc, uint code, uint c, Bool discarded);
void TY_(ReportEncodingWarning)(TidyDocImpl* doc, uint code, uint encoding);
void TY_(ReportMissingAttr)( TidyDocImpl* doc, Node* node, ctmbstr name );
void TY_(ReportSurrogateError)(TidyDocImpl* doc, uint code, uint c1, uint c2);
void TY_(ReportUnknownOption)( TidyDocImpl* doc, ctmbstr option );
/** @} */
/** @name General Dialogue Writing
** These functions produce dialogue output such as individual messages, or
** several messages in summary form.
*/
/** @{ */
/**
* Emits a single dialogue message, and is capable of accepting a variadic
* that is passed to the correct message formatter as needed.
*/
void TY_(Dialogue)( TidyDocImpl* doc, uint code, ... );
/** @} */
/** @name Output Dialogue Information */
/** @{ */
/**
* Outputs the footnotes and other dialogue information after document cleanup
* is complete. LibTidy users might consider capturing these individually in
* the message callback rather than capturing this entire buffer.
* Called by `tidyErrorSummary()`, in console.
* @todo: This name is a bit misleading and should probably be renamed to
* indicate its focus on printing footnotes.
*/
void TY_(ErrorSummary)( TidyDocImpl* doc );
/**
* Outputs document HTML version and version-related information as the final
* report(s) in the report table.
* Called by `tidyRunDiagnostics()`, from console.
* Called by `tidyDocReportDoctype()`, currently unused.
*/
void TY_(ReportMarkupVersion)( TidyDocImpl* doc );
/**
* Reports the number of warnings and errors found in the document as dialogue
* inforation.
* Called by `tidyRunDiagnostics()`, from console.
*/
void TY_(ReportNumWarnings)( TidyDocImpl* doc );
/** @} */
/** @} message_reporting group */
/***************************************************************************//**
** @defgroup message_keydiscovery Key Discovery
**
** LibTidy users may want to use `TidyReportCallback` to enable their own
** localization lookup features. Because Tidy's report codes are enums the
** specific values can change over time. Using these functions provides the
** ability for LibTidy users to use LibTidy's enum values as strings for
** lookup purposes.
**
** @{
******************************************************************************/
/**
* This function returns a string representing the enum value name that can
* be used as a lookup key independent of changing string values.
* `TidyReportCallback` will return this general string as the report
* message key.
*/
ctmbstr TY_(tidyErrorCodeAsKey)(uint code);
/**
* Given an error code string, return the integer value of it, or UINT_MAX
* as an error flag.
*/
uint TY_(tidyErrorCodeFromKey)(ctmbstr code);
/**
* Initializes the TidyIterator to point to the first item
* in Tidy's list of error codes that can be return with
* `TidyReportFilter3`.
* Items can be retrieved with getNextErrorCode();
*/
TidyIterator TY_(getErrorCodeList)(void);
/**
* Returns the next error code having initialized the iterator
* with `getErrorCodeList()`. You can use tidyErrorCodeAsKey
* to determine the key for this value.
*/
uint TY_(getNextErrorCode)( TidyIterator* iter );
/** @} message_keydiscovery group */
/** @} internal_api addtogroup */
/* accessibility flaws */
#define BA_MISSING_IMAGE_ALT 1
#define BA_MISSING_LINK_ALT 2
#define BA_MISSING_SUMMARY 4
#define BA_MISSING_IMAGE_MAP 8
#define BA_USING_FRAMES 16
#define BA_USING_NOFRAMES 32
#define BA_INVALID_LINK_NOFRAMES 64 /* WAI [6.5.1.4] */
#define BA_WAI (1 << 31)
/* presentation flaws */
#define USING_SPACER 1
#define USING_LAYER 2
#define USING_NOBR 4
#define USING_FONT 8
#define USING_BODY 16
/* badchar bit field */
#define BC_VENDOR_SPECIFIC_CHARS 1
#define BC_INVALID_SGML_CHARS 2
#define BC_INVALID_UTF8 4
#define BC_INVALID_UTF16 8
#define BC_ENCODING_MISMATCH 16 /* fatal error */
#define BC_INVALID_URI 32
#define BC_INVALID_NCR 64
/* other footnote bit field (temporary until formalized) */
#define FN_TRIM_EMPTY_ELEMENT 1
/* Lexer and I/O Macros */
#define REPLACED_CHAR 0
#define DISCARDED_CHAR 1
#endif /* __MESSAGE_H__ */