671 lines
20 KiB
C
671 lines
20 KiB
C
/* messageobj.c
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* Provides an external, extensible API for message reporting.
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*
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* (c) 2017 HTACG
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* See tidy.h for the copyright notice.
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*/
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#include "messageobj.h"
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#include "message.h"
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#include "tidy-int.h"
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#include "limits.h"
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#include "tmbstr.h"
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/*********************************************************************
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* BuildArgArray Support - declarations and forward declarations
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*********************************************************************/
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/** A record of a single argument and its type. An array these
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** represents the arguments supplied to a format string, ordered
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** in the same position as they occur in the format string. Because
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** older versions of Windows don't support positional arguments,
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** Tidy doesn't either.
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*/
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#define FORMAT_LENGTH 21
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struct printfArg {
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TidyFormatParameterType type; /* type of the argument */
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int formatStart; /* where the format starts */
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int formatLength; /* length of the format */
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char format[FORMAT_LENGTH]; /* buffer for the format */
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union { /* the argument */
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int i;
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uint ui;
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double d;
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const char *s;
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} u;
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};
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/** Returns a pointer to an allocated array of `printfArg` given a format
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** string and a va_list, or NULL if not successful or no parameters were
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** given. Parameter `rv` will return with the count of zero or more
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** parameters if successful, else -1.
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**
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*/
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static struct printfArg *BuildArgArray( TidyDocImpl *doc, ctmbstr fmt, va_list ap, int *rv );
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/*********************************************************************
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* Tidy Message Object Support
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*********************************************************************/
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/** Create an internal representation of a Tidy message with all of
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** the information that that we know about the message.
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**
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** The function signature doesn't have to stay static and is a good
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** place to add instantiation if expanding the API.
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**
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** We currently know the doc, node, code, line, column, level, and
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** args, will pre-calculate all of the other members upon creation.
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** This ensures that we can use members directly, immediately,
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** without having to use accessors internally.
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**
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** If any message callback filters are setup by API clients, they
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** will be called here.
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**
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** This version serves as the designated initializer and as such
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** requires every known parameter.
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*/
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static TidyMessageImpl *tidyMessageCreateInitV( TidyDocImpl *doc,
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Node *node,
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uint code,
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int line,
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int column,
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TidyReportLevel level,
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va_list args )
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{
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TidyMessageImpl *result = TidyDocAlloc(doc, sizeof(TidyMessageImpl));
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TidyDoc tdoc = tidyImplToDoc(doc);
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va_list args_copy;
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enum { sizeMessageBuf=2048 };
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ctmbstr pattern;
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uint i = 0;
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/* Things we know... */
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result->tidyDoc = doc;
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result->tidyNode = node;
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result->code = code;
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result->line = line;
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result->column = column;
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result->level = level;
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/* Is #719 - set 'muted' before any callbacks. */
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result->muted = no;
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i = 0;
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while ((doc->muted.list) && (doc->muted.list[i] != 0))
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{
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if (doc->muted.list[i] == code)
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{
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result->muted = yes;
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break;
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}
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i++;
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}
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/* Things we create... */
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va_copy(args_copy, args);
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result->arguments = BuildArgArray(doc, tidyDefaultString(code), args_copy, &result->argcount);
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va_end(args_copy);
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result->messageKey = TY_(tidyErrorCodeAsKey)(code);
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result->messageFormatDefault = tidyDefaultString(code);
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result->messageFormat = tidyLocalizedString(code);
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result->messageDefault = TidyDocAlloc(doc, sizeMessageBuf);
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va_copy(args_copy, args);
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TY_(tmbvsnprintf)(result->messageDefault, sizeMessageBuf, result->messageFormatDefault, args_copy);
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va_end(args_copy);
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result->message = TidyDocAlloc(doc, sizeMessageBuf);
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va_copy(args_copy, args);
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TY_(tmbvsnprintf)(result->message, sizeMessageBuf, result->messageFormat, args_copy);
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va_end(args_copy);
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result->messagePosDefault = TidyDocAlloc(doc, sizeMessageBuf);
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result->messagePos = TidyDocAlloc(doc, sizeMessageBuf);
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if ( cfgBool(doc, TidyEmacs) && cfgStr(doc, TidyEmacsFile) )
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{
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/* Change formatting to be parsable by GNU Emacs */
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TY_(tmbsnprintf)(result->messagePosDefault, sizeMessageBuf, "%s:%d:%d: ", cfgStr(doc, TidyEmacsFile), line, column);
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TY_(tmbsnprintf)(result->messagePos, sizeMessageBuf, "%s:%d:%d: ", cfgStr(doc, TidyEmacsFile), line, column);
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}
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else if ( cfgBool(doc, TidyShowFilename) && cfgStr(doc, TidyEmacsFile) )
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{
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/* Include filename in output */
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TY_(tmbsnprintf)(result->messagePosDefault, sizeMessageBuf, tidyDefaultString(FN_LINE_COLUMN_STRING),
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cfgStr(doc, TidyEmacsFile), line, column);
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TY_(tmbsnprintf)(result->messagePos, sizeMessageBuf, tidyLocalizedString(FN_LINE_COLUMN_STRING),
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cfgStr(doc, TidyEmacsFile), line, column);
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}
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else
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{
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/* traditional format */
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TY_(tmbsnprintf)(result->messagePosDefault, sizeMessageBuf, tidyDefaultString(LINE_COLUMN_STRING), line, column);
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TY_(tmbsnprintf)(result->messagePos, sizeMessageBuf, tidyLocalizedString(LINE_COLUMN_STRING), line, column);
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}
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result->messagePrefixDefault = tidyDefaultString(level);
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result->messagePrefix = tidyLocalizedString(level);
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if ( line > 0 && column > 0 )
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pattern = "%s%s%s"; /* pattern if there's location information */
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else
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pattern = "%.0s%s%s"; /* otherwise if there isn't */
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if ( level > TidyFatal )
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pattern = "%.0s%.0s%s"; /* dialog doesn't have pos or prefix */
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result->messageOutputDefault = TidyDocAlloc(doc, sizeMessageBuf);
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TY_(tmbsnprintf)(result->messageOutputDefault, sizeMessageBuf, pattern,
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result->messagePosDefault, result->messagePrefixDefault,
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result->messageDefault);
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result->messageOutput = TidyDocAlloc(doc, sizeMessageBuf);
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TY_(tmbsnprintf)(result->messageOutput, sizeMessageBuf, pattern,
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result->messagePos, result->messagePrefix,
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result->message);
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if ( ( cfgBool(doc, TidyMuteShow) == yes ) && level <= TidyFatal )
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{
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/*\ Issue #655 - Unsafe to use output buffer as one of the va_list
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* input parameters in some snprintf implmentations.
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\*/
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ctmbstr pc = TY_(tidyErrorCodeAsKey)(code);
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i = TY_(tmbstrlen)(result->messageOutputDefault);
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if (i < sizeMessageBuf)
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TY_(tmbsnprintf)(result->messageOutputDefault + i, sizeMessageBuf - i, " (%s)", pc );
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i = TY_(tmbstrlen)(result->messageOutput);
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if (i < sizeMessageBuf)
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TY_(tmbsnprintf)(result->messageOutput + i, sizeMessageBuf - i, " (%s)", pc );
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i = 0;
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}
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result->allowMessage = yes;
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/* reportFilter is a simple error filter that provides minimal information
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to callback functions, and includes the message buffer in LibTidy's
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configured localization. As it's a "legacy" API, it does not receive
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TidyDialogue messages.*/
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if ( (result->level <= TidyFatal) && doc->reportFilter )
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{
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result->allowMessage = result->allowMessage & doc->reportFilter( tdoc, result->level, result->line, result->column, result->messageOutput );
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}
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/* reportCallback is intended to allow LibTidy users to localize messages
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via their own means by providing a key and the parameters to fill it.
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As it's a "legacy" API, it does not receive TidyDialogue messages. */
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if ( (result->level <= TidyFatal) && doc->reportCallback )
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{
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TidyDoc tdoc = tidyImplToDoc( doc );
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va_copy(args_copy, args);
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result->allowMessage = result->allowMessage & doc->reportCallback( tdoc, result->level, result->line, result->column, result->messageKey, args_copy );
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va_end(args_copy);
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}
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/* messageCallback is the newest interface to interrogate Tidy's
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emitted messages. */
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if ( doc->messageCallback )
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{
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result->allowMessage = result->allowMessage & doc->messageCallback( tidyImplToMessage(result) );
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}
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return result;
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}
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TidyMessageImpl *TY_(tidyMessageCreate)( TidyDocImpl *doc,
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uint code,
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TidyReportLevel level,
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... )
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{
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TidyMessageImpl *result;
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va_list args;
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va_start(args, level);
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result = tidyMessageCreateInitV(doc, NULL, code, 0, 0, level, args);
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va_end(args);
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return result;
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}
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TidyMessageImpl *TY_(tidyMessageCreateWithNode)( TidyDocImpl *doc,
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Node *node,
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uint code,
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TidyReportLevel level,
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... )
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{
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TidyMessageImpl *result;
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va_list args_copy;
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int line = ( node ? node->line :
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( doc->lexer ? doc->lexer->lines : 0 ) );
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int col = ( node ? node->column :
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( doc->lexer ? doc->lexer->columns : 0 ) );
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va_start(args_copy, level);
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result = tidyMessageCreateInitV(doc, node, code, line, col, level, args_copy);
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va_end(args_copy);
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return result;
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}
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TidyMessageImpl *TY_(tidyMessageCreateWithLexer)( TidyDocImpl *doc,
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uint code,
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TidyReportLevel level,
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... )
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{
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TidyMessageImpl *result;
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va_list args_copy;
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int line = ( doc->lexer ? doc->lexer->lines : 0 );
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int col = ( doc->lexer ? doc->lexer->columns : 0 );
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va_start(args_copy, level);
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result = tidyMessageCreateInitV(doc, NULL, code, line, col, level, args_copy);
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va_end(args_copy);
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return result;
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}
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void TY_(tidyMessageRelease)( TidyMessageImpl *message )
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{
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if ( !message )
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return;
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->arguments );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->messageDefault );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->message );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->messagePosDefault );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->messagePos );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->messageOutputDefault );
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TidyDocFree( tidyDocToImpl(message->tidyDoc), message->messageOutput );
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TidyDocFree(tidyDocToImpl(message->tidyDoc), message); /* Issue #597 - and discard the message structure */
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}
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/*********************************************************************
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* Modern Message Callback Functions
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*********************************************************************/
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TidyDocImpl* TY_(getMessageDoc)( TidyMessageImpl message )
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{
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return message.tidyDoc;
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}
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uint TY_(getMessageCode)( TidyMessageImpl message )
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{
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return message.code;
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}
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ctmbstr TY_(getMessageKey)( TidyMessageImpl message )
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{
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return message.messageKey;
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}
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int TY_(getMessageLine)( TidyMessageImpl message )
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{
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return message.line;
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}
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int TY_(getMessageColumn)( TidyMessageImpl message )
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{
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return message.column;
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}
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TidyReportLevel TY_(getMessageLevel)( TidyMessageImpl message )
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{
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return message.level;
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}
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Bool TY_(getMessageIsMuted)( TidyMessageImpl message )
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{
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return message.muted;
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}
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ctmbstr TY_(getMessageFormatDefault)( TidyMessageImpl message )
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{
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return message.messageFormatDefault;
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}
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ctmbstr TY_(getMessageFormat)( TidyMessageImpl message )
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{
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return message.messageFormat;
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}
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ctmbstr TY_(getMessageDefault)( TidyMessageImpl message )
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{
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return message.messageDefault;
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}
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ctmbstr TY_(getMessage)( TidyMessageImpl message )
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{
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return message.message;
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}
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ctmbstr TY_(getMessagePosDefault)( TidyMessageImpl message )
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{
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return message.messagePosDefault;
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}
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ctmbstr TY_(getMessagePos)( TidyMessageImpl message )
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{
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return message.messagePos;
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}
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ctmbstr TY_(getMessagePrefixDefault)( TidyMessageImpl message )
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{
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return message.messagePrefixDefault;
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}
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ctmbstr TY_(getMessagePrefix)( TidyMessageImpl message )
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{
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return message.messagePrefix;
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}
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ctmbstr TY_(getMessageOutputDefault)( TidyMessageImpl message )
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{
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return message.messageOutputDefault;
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}
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ctmbstr TY_(getMessageOutput)( TidyMessageImpl message )
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{
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return message.messageOutput;
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}
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/*********************************************************************
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* Message Argument Interrogation
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*********************************************************************/
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TidyIterator TY_(getMessageArguments)( TidyMessageImpl message )
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{
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if (message.argcount > 0)
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return (TidyIterator) (size_t)1;
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else
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return (TidyIterator) (size_t)0;
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}
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TidyMessageArgument TY_(getNextMessageArgument)( TidyMessageImpl message, TidyIterator* iter )
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{
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size_t item = 0;
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size_t itemIndex;
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assert( iter != NULL );
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itemIndex = (size_t)*iter;
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if ( itemIndex >= 1 && itemIndex <= (size_t)message.argcount )
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{
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item = itemIndex;
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itemIndex++;
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}
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/* Just as TidyIterator is really just a dumb, one-based index, the
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TidyMessageArgument is really just a dumb, zero-based index; however
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this type of iterator and opaque interrogation is simply how Tidy
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does things. */
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*iter = (TidyIterator)( itemIndex <= (size_t)message.argcount ? itemIndex : (size_t)0 );
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return (TidyMessageArgument)item;
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}
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TidyFormatParameterType TY_(getArgType)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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return message.arguments[argNum].type;
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}
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ctmbstr TY_(getArgFormat)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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return message.arguments[argNum].format;
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}
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ctmbstr TY_(getArgValueString)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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assert( message.arguments[argNum].type == tidyFormatType_STRING);
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return message.arguments[argNum].u.s;
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}
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uint TY_(getArgValueUInt)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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assert( message.arguments[argNum].type == tidyFormatType_UINT);
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return message.arguments[argNum].u.ui;
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}
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int TY_(getArgValueInt)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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assert( message.arguments[argNum].type == tidyFormatType_INT);
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return message.arguments[argNum].u.i;
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}
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double TY_(getArgValueDouble)( TidyMessageImpl message, TidyMessageArgument* arg )
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{
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int argNum = (int)(size_t)*arg - 1;
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assert( argNum <= message.argcount );
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assert( message.arguments[argNum].type == tidyFormatType_DOUBLE);
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return message.arguments[argNum].u.d;
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}
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/*********************************************************************
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* BuildArgArray support
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* Adapted loosely from Mozilla `prprf.c`, Mozilla Public License:
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* - https://www.mozilla.org/en-US/MPL/2.0/
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*********************************************************************/
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/** Returns a pointer to an allocated array of `printfArg` given a format
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** string and a va_list, or NULL if not successful or no parameters were
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** given. Parameter `rv` will return with the count of zero or more
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** parameters if successful, else -1.
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**
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** We'll also be sure to use the document's allocator if specified, thus
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** the requirement to pass in a TidyDocImpl.
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**
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** Currently Tidy only uses %c, %d, %s, %u, %X, although doubles are
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** supported as well. Unsupported arguments will result in failure as
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** described above.
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*/
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static struct printfArg* BuildArgArray( TidyDocImpl *doc, ctmbstr fmt, va_list ap, int* rv )
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{
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int number = 0; /* the quantity of valid arguments found; returned as rv. */
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int cn = -1; /* keeps track of which parameter index is current. */
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int i = 0; /* typical index. */
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int pos = -1; /* starting position of current argument. */
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const char* p; /* current position in format string. */
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char c; /* current character. */
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struct printfArg* nas;
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/* first pass: determine number of valid % to allocate space. */
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p = fmt;
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*rv = 0;
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while( ( c = *p++ ) != 0 )
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{
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if( c != '%' )
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continue;
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if( ( c = *p++ ) == '%' ) /* skip %% case */
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continue;
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else
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number++;
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}
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if( number == 0 )
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return NULL;
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nas = (struct printfArg*)TidyDocAlloc( doc, number * sizeof( struct printfArg ) );
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if( !nas )
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{
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*rv = -1;
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return NULL;
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}
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for( i = 0; i < number; i++ )
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{
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nas[i].type = tidyFormatType_UNKNOWN;
|
|
}
|
|
|
|
|
|
/* second pass: set nas[].type and location. */
|
|
|
|
p = fmt;
|
|
while( ( c = *p++ ) != 0 )
|
|
{
|
|
if( c != '%' )
|
|
continue;
|
|
|
|
if( ( c = *p++ ) == '%' )
|
|
continue; /* skip %% case */
|
|
|
|
pos = p - fmt - 2; /* p already incremented twice */
|
|
|
|
/* width -- width via parameter */
|
|
if (c == '*')
|
|
{
|
|
/* not supported feature */
|
|
*rv = -1;
|
|
break;
|
|
}
|
|
|
|
/* width field -- skip */
|
|
while ((c >= '0') && (c <= '9'))
|
|
{
|
|
c = *p++;
|
|
}
|
|
|
|
/* precision */
|
|
if (c == '.')
|
|
{
|
|
c = *p++;
|
|
if (c == '*') {
|
|
/* not supported feature */
|
|
*rv = -1;
|
|
break;
|
|
}
|
|
|
|
while ((c >= '0') && (c <= '9'))
|
|
{
|
|
c = *p++;
|
|
}
|
|
}
|
|
|
|
|
|
cn++;
|
|
|
|
/* size and format */
|
|
nas[cn].type = tidyFormatType_UINT;
|
|
switch (c)
|
|
{
|
|
case 'c': /* unsigned int (char) */
|
|
case 'u': /* unsigned int */
|
|
case 'X': /* unsigned int as hex */
|
|
case 'x': /* unsigned int as hex */
|
|
case 'o': /* octal */
|
|
nas[cn].u.ui = va_arg( ap, unsigned int );
|
|
break;
|
|
|
|
case 'd': /* signed int */
|
|
case 'i': /* signed int */
|
|
nas[cn].type = tidyFormatType_INT;
|
|
nas[cn].u.i = va_arg( ap, int );
|
|
break;
|
|
|
|
|
|
case 's': /* string */
|
|
nas[cn].type = tidyFormatType_STRING;
|
|
nas[cn].u.s = va_arg( ap, char* );
|
|
break;
|
|
|
|
case 'e': /* double */
|
|
case 'E': /* double */
|
|
case 'f': /* double */
|
|
case 'F': /* double */
|
|
case 'g': /* double */
|
|
case 'G': /* double */
|
|
nas[cn].type = tidyFormatType_DOUBLE;
|
|
nas[cn].u.d = va_arg( ap, double );
|
|
break;
|
|
|
|
default:
|
|
nas[cn].type = tidyFormatType_UNKNOWN;
|
|
*rv = -1;
|
|
break;
|
|
}
|
|
|
|
/* position and format */
|
|
nas[cn].formatStart = pos;
|
|
nas[cn].formatLength = (p - fmt) - pos;
|
|
|
|
/* the format string exceeds the buffer length */
|
|
if ( nas[cn].formatLength >= FORMAT_LENGTH )
|
|
{
|
|
*rv = -1;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
strncpy(nas[cn].format, fmt + nas[cn].formatStart, nas[cn].formatLength);
|
|
nas[cn].format[nas[cn].formatLength] = 0; /* Is. #800 - If count <= srcLen, no 0 added! */
|
|
}
|
|
|
|
|
|
/* Something's not right. */
|
|
if( nas[cn].type == tidyFormatType_UNKNOWN )
|
|
{
|
|
*rv = -1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/* third pass: fill the nas[cn].ap */
|
|
|
|
if( *rv < 0 )
|
|
{
|
|
TidyDocFree( doc, nas );;
|
|
return NULL;
|
|
}
|
|
|
|
*rv = number;
|
|
return nas;
|
|
}
|
|
|