[wxWidgets.git] / utils / tex2rtf / src / tex2any.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        tex2any.cpp
// Purpose:     Utilities for Latex conversion.
// Author:      Julian Smart
// Modified by:
// Created:     01/01/99
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include <ctype.h>
#include "tex2any.h"
#include <stdlib.h>
#include <time.h>

/*
 * Variables accessible from clients
 *
 */
 
TexChunk *      DocumentTitle = NULL;
TexChunk *      DocumentAuthor = NULL;
TexChunk *      DocumentDate = NULL;

// Header/footers/pagestyle
TexChunk *      LeftHeaderEven = NULL;
TexChunk *      LeftFooterEven = NULL;
TexChunk *      CentreHeaderEven = NULL;
TexChunk *      CentreFooterEven = NULL;
TexChunk *      RightHeaderEven = NULL;
TexChunk *      RightFooterEven = NULL;
TexChunk *      LeftHeaderOdd = NULL;
TexChunk *      LeftFooterOdd = NULL;
TexChunk *      CentreHeaderOdd = NULL;
TexChunk *      CentreFooterOdd = NULL;
TexChunk *      RightHeaderOdd = NULL;
TexChunk *      RightFooterOdd = NULL;
char *          PageStyle = copystring("plain");

int             DocumentStyle = LATEX_REPORT;
int             MinorDocumentStyle = 0;
wxPathList      TexPathList;
char *          BibliographyStyleString = copystring("plain");
char *          DocumentStyleString = copystring("report");
char *          MinorDocumentStyleString = NULL;
int             ParSkip = 0;
int             ParIndent = 0;

int             normalFont = 10;
int             smallFont = 8;
int             tinyFont = 6;
int             largeFont1 = 12;
int             LargeFont2 = 14;
int             LARGEFont3 = 18;
int             hugeFont1 = 20;
int             HugeFont2 = 24;
int             HUGEFont3 = 28;

/*
 * USER-ADJUSTABLE SETTINGS
 *
 */

// Section font sizes
int             chapterFont =    12; // LARGEFont3;
int             sectionFont =    12; // LargeFont2;
int             subsectionFont = 12; // largeFont1;
int             titleFont = LARGEFont3;
int             authorFont = LargeFont2;
int             mirrorMargins = TRUE;
bool            winHelp = FALSE;  // Output in Windows Help format if TRUE, linear otherwise
bool            isInteractive = FALSE;
bool            runTwice = FALSE;
int             convertMode = TEX_RTF;
bool            headerRule = FALSE;
bool            footerRule = FALSE;
bool            compatibilityMode = FALSE; // If TRUE, maximum Latex compatibility
                                // (Quality of RTF generation deteriorate)
bool            generateHPJ; // Generate WinHelp Help Project file
char            *winHelpTitle = NULL; // Windows Help title
int             defaultTableColumnWidth = 2000;

int             labelIndentTab = 18;  // From left indent to item label (points)
int             itemIndentTab = 40;   // From left indent to item (points)

bool            useUpButton = TRUE;
int             htmlBrowseButtons = HTML_BUTTONS_TEXT;

bool            truncateFilenames = FALSE; // Truncate for DOS
int             winHelpVersion = 3; // WinHelp Version (3 for Windows 3.1, 4 for Win95)
bool            winHelpContents = FALSE; // Generate .cnt file for WinHelp 4
bool            htmlIndex = FALSE; // Generate .htx file for HTML
bool            htmlFrameContents = FALSE; // Use frames for HTML contents page
bool            useHeadingStyles = TRUE; // Insert \s1, s2 etc.
bool            useWord = TRUE; // Insert proper Word table of contents, etc etc
int             contentsDepth = 4; // Depth of Word table of contents
bool            indexSubsections = TRUE; // Index subsections in linear RTF
// Linear RTF method of including bitmaps. Can be "includepicture", "hex"
char            *bitmapMethod = copystring("includepicture");
bool            upperCaseNames = FALSE;
// HTML background and text colours
char            *backgroundImageString = NULL;
char            *backgroundColourString = copystring("255;255;255");
char            *textColourString = NULL;
char            *linkColourString = NULL;
char            *followedLinkColourString = NULL;
bool            combineSubSections = FALSE;

/*
 * International support
 */

// Names to help with internationalisation
char *ContentsNameString = copystring("Contents");
char *AbstractNameString = copystring("Abstract");
char *GlossaryNameString = copystring("Glossary");
char *ReferencesNameString = copystring("References");
char *FiguresNameString = copystring("List of Figures");
char *TablesNameString = copystring("List of Tables");
char *FigureNameString = copystring("Figure");
char *TableNameString = copystring("Table");
char *IndexNameString = copystring("Index");
char *ChapterNameString = copystring("chapter");
char *SectionNameString = copystring("section");
char *SubsectionNameString = copystring("subsection");
char *SubsubsectionNameString = copystring("subsubsection");
char *UpNameString = copystring("Up");

/*
 * Section numbering
 *
 */
 
int             chapterNo = 0;
int             sectionNo = 0;
int             subsectionNo = 0;
int             subsubsectionNo = 0;
int             figureNo = 0;
int             tableNo = 0;

/*
 * Other variables
 *
 */
 
FILE *CurrentOutput1 = NULL;
FILE *CurrentOutput2 = NULL;
FILE *Inputs[15];
int LineNumbers[15];
char *FileNames[15];
int CurrentInputIndex = 0;

char *TexFileRoot = NULL;
char *TexBibName = NULL;         // Bibliography output file name
char *TexTmpBibName = NULL;      // Temporary bibliography output file name
bool isSync = FALSE;             // If TRUE, should not yield to other processes.
bool stopRunning = FALSE;        // If TRUE, should abort.

static int currentColumn = 0;
char *currentArgData = NULL;
bool haveArgData = FALSE; // If TRUE, we're simulating the data.
TexChunk *currentArgument = NULL;
TexChunk *nextChunk = NULL;
bool isArgOptional = FALSE;
int noArgs = 0;

TexChunk *TopLevel = NULL;
// wxList MacroDefs(wxKEY_STRING);
wxHashTable MacroDefs(wxKEY_STRING);
wxStringList IgnorableInputFiles; // Ignorable \input files, e.g. psbox.tex
char *BigBuffer = NULL;  // For reading in large chunks of text
TexMacroDef *SoloBlockDef = NULL;
TexMacroDef *VerbatimMacroDef = NULL;

#define IncrementLineNumber() LineNumbers[CurrentInputIndex] ++

void TexOutput(char *s, bool ordinaryText)
{
  int len = strlen(s);

  // Update current column, but only if we're guaranteed to
  // be ordinary text (not mark-up stuff)
  int i;
  if (ordinaryText)
    for (i = 0; i < len; i++)
    {
      if (s[i] == 13 || s[i] == 10)
        currentColumn = 0;
      else
        currentColumn ++;
    }

  if (CurrentOutput1)
    fprintf(CurrentOutput1, "%s", s);
  if (CurrentOutput2)
    fprintf(CurrentOutput2, "%s", s);
}

/*
 * Try to find a Latex macro, in one of the following forms:
 * (1) \begin{} ... \end{}
 * (2) \macroname{arg1}...{argn}
 * (3) {\bf arg1}
 */

void ForbidWarning(TexMacroDef *def)
{
  char buf[100];
  switch (def->forbidden)
  {
    case FORBID_WARN:
    {
      sprintf(buf, "Warning: it is recommended that command %s is not used.", def->name);
      OnInform(buf);
      break;
    }
    case FORBID_ABSOLUTELY:
    {
      sprintf(buf, "Error: command %s cannot be used and will lead to errors.", def->name);
      OnInform(buf);
      break;
    }
    default:
      break;
  }
}
 
TexMacroDef *MatchMacro(char *buffer, int *pos, char **env, bool *parseToBrace)
{
  *parseToBrace = TRUE;
  int i = (*pos);
  TexMacroDef *def = NULL;
  char macroBuf[40];

  // First, try to find begin{thing}
  if (strncmp(buffer+i, "begin{", 6) == 0)
  {
    i += 6;

    int j = i;
    while ((isalpha(buffer[j]) || buffer[j] == '*') && ((j - i) < 39))
    {
      macroBuf[j-i] = buffer[j];
      j ++;
    }
    macroBuf[j-i] = 0;
    def = (TexMacroDef *)MacroDefs.Get(macroBuf);

    if (def)
    {
      *pos = j + 1;  // BUGBUG Should this be + 1???
      *env = def->name;
      ForbidWarning(def);
      return def;
    }
    else return NULL;
  }

  // Failed, so try to find macro from definition list
  int j = i;

  // First try getting a one-character macro, but ONLY
  // if these TWO characters are not both alphabetical (could
  // be a longer macro)
  if (!(isalpha(buffer[i]) && isalpha(buffer[i+1])))
  {
    macroBuf[0] = buffer[i];
    macroBuf[1] = 0;

    def = (TexMacroDef *)MacroDefs.Get(macroBuf);
    if (def) j ++;
  }

  if (!def)
  {
    while ((isalpha(buffer[j]) || buffer[j] == '*') && ((j - i) < 39))
    {
      macroBuf[j-i] = buffer[j];
      j ++;
    }
    macroBuf[j-i] = 0;
    def = (TexMacroDef *)MacroDefs.Get(macroBuf);
  }
    
  if (def)
  {
    i = j;
    
    // We want to check whether this is a space-consuming macro
    // (e.g. {\bf word})
    // No brace, e.g. \input thing.tex instead of \input{thing};
    // or a numeric argument, such as \parindent0pt
    if ((def->no_args > 0) && ((buffer[i] == 32) || (buffer[i] == '=') || (isdigit(buffer[i]))))
    {
      if ((buffer[i] == 32) || (buffer[i] == '='))
        i ++;

      *parseToBrace = FALSE;
    }
    *pos = i;
    ForbidWarning(def);
    return def;
  }
  return NULL;
}

void EatWhiteSpace(char *buffer, int *pos)
{
  int len = strlen(buffer);
  int j = *pos;
  bool keepGoing = TRUE;
  bool moreLines = TRUE;
  while ((j < len) && keepGoing &&
         (buffer[j] == 10 || buffer[j] == 13 || buffer[j] == ' ' || buffer[j] == 9))
  {
    j ++;
    if (j >= len)
    {
      if (moreLines)
      {
        moreLines = read_a_line(buffer);
        len = strlen(buffer);
        j = 0;
      }
      else
        keepGoing = FALSE;
    }
  }
  *pos = j;
}

bool FindEndEnvironment(char *buffer, int *pos, char *env)
{
  int i = (*pos);

  // Try to find end{thing}
  if ((strncmp(buffer+i, "end{", 4) == 0) &&
      (strncmp(buffer+i+4, env, strlen(env)) == 0))
  {
    *pos = i + 5 + strlen(env);
    return TRUE;
  }
  else return FALSE;
}

bool readingVerbatim = FALSE;
bool readInVerbatim = FALSE;  // Within a verbatim, but not nec. verbatiminput

bool read_a_line(char *buf)
{
  if (CurrentInputIndex < 0)
  {
    buf[0] = 0;
    return FALSE;
  }
  
  int ch = -2;
  int i = 0;
  buf[0] = 0;
  while (ch != EOF && ch != 10)
  {
    if (((i == 14) && (strncmp(buf, "\\end{verbatim}", 14) == 0)) ||
         ((i == 16) && (strncmp(buf, "\\end{toocomplex}", 16) == 0)))
      readInVerbatim = FALSE;

    ch = getc(Inputs[CurrentInputIndex]);
    if (ch != EOF)
    {
      // Check for 2 consecutive newlines and replace with \par
      if (ch == 10 && !readInVerbatim)
      {
        int ch1 = getc(Inputs[CurrentInputIndex]);
        if ((ch1 == 10) || (ch1 == 13))
        {
          // Eliminate newline (10) following DOS linefeed
          if (ch1 == 13) ch1 = getc(Inputs[CurrentInputIndex]);
          buf[i] = 0;
          IncrementLineNumber();
//          strcat(buf, "\\par\n");
//          i += 6;
          strcat(buf, "\\par");
          i += 5;
        }
        else
        {
          ungetc(ch1, Inputs[CurrentInputIndex]);
          buf[i] = ch;
          i ++;
        }
      }
      else
      {

        // Convert embedded characters to RTF equivalents
		switch(ch)
		{
Commit	Line	Data
9a29912f JS	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: tex2any.cpp
	3	// Purpose: Utilities for Latex conversion.
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 01/01/99
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18
	19	#ifdef __BORLANDC__
	20	#pragma hdrstop
	21	#endif
	22
	23	#ifndef WX_PRECOMP
	24	#include "wx/wx.h"
	25	#endif
	26
	27	#include <ctype.h>
	28	#include "tex2any.h"
	29	#include <stdlib.h>
	30	#include <time.h>
	31
	32	/*
	33	* Variables accessible from clients
	34	*
	35	*/
	36
	37	TexChunk * DocumentTitle = NULL;
	38	TexChunk * DocumentAuthor = NULL;
	39	TexChunk * DocumentDate = NULL;
	40
	41	// Header/footers/pagestyle
	42	TexChunk * LeftHeaderEven = NULL;
	43	TexChunk * LeftFooterEven = NULL;
	44	TexChunk * CentreHeaderEven = NULL;
	45	TexChunk * CentreFooterEven = NULL;
	46	TexChunk * RightHeaderEven = NULL;
	47	TexChunk * RightFooterEven = NULL;
	48	TexChunk * LeftHeaderOdd = NULL;
	49	TexChunk * LeftFooterOdd = NULL;
	50	TexChunk * CentreHeaderOdd = NULL;
	51	TexChunk * CentreFooterOdd = NULL;
	52	TexChunk * RightHeaderOdd = NULL;
	53	TexChunk * RightFooterOdd = NULL;
	54	char * PageStyle = copystring("plain");
	55
	56	int DocumentStyle = LATEX_REPORT;
	57	int MinorDocumentStyle = 0;
	58	wxPathList TexPathList;
	59	char * BibliographyStyleString = copystring("plain");
	60	char * DocumentStyleString = copystring("report");
	61	char * MinorDocumentStyleString = NULL;
	62	int ParSkip = 0;
	63	int ParIndent = 0;
	64
65	int normalFont = 10;
66	int smallFont = 8;
67	int tinyFont = 6;
68	int largeFont1 = 12;
69	int LargeFont2 = 14;
70	int LARGEFont3 = 18;
71	int hugeFont1 = 20;
72	int HugeFont2 = 24;
73	int HUGEFont3 = 28;
74
75	/*
76	* USER-ADJUSTABLE SETTINGS
77	*
78	*/
79
80	// Section font sizes
81	int chapterFont = 12; // LARGEFont3;
82	int sectionFont = 12; // LargeFont2;
83	int subsectionFont = 12; // largeFont1;
84	int titleFont = LARGEFont3;
85	int authorFont = LargeFont2;
86	int mirrorMargins = TRUE;
87	bool winHelp = FALSE; // Output in Windows Help format if TRUE, linear otherwise
88	bool isInteractive = FALSE;
89	bool runTwice = FALSE;
90	int convertMode = TEX_RTF;
91	bool headerRule = FALSE;
92	bool footerRule = FALSE;
93	bool compatibilityMode = FALSE; // If TRUE, maximum Latex compatibility
94	// (Quality of RTF generation deteriorate)
95	bool generateHPJ; // Generate WinHelp Help Project file
96	char *winHelpTitle = NULL; // Windows Help title
97	int defaultTableColumnWidth = 2000;
98
99	int labelIndentTab = 18; // From left indent to item label (points)
100	int itemIndentTab = 40; // From left indent to item (points)
101
102	bool useUpButton = TRUE;
103	int htmlBrowseButtons = HTML_BUTTONS_TEXT;
104
105	bool truncateFilenames = FALSE; // Truncate for DOS
106	int winHelpVersion = 3; // WinHelp Version (3 for Windows 3.1, 4 for Win95)
107	bool winHelpContents = FALSE; // Generate .cnt file for WinHelp 4
108	bool htmlIndex = FALSE; // Generate .htx file for HTML
109	bool htmlFrameContents = FALSE; // Use frames for HTML contents page
110	bool useHeadingStyles = TRUE; // Insert \s1, s2 etc.
111	bool useWord = TRUE; // Insert proper Word table of contents, etc etc
112	int contentsDepth = 4; // Depth of Word table of contents
113	bool indexSubsections = TRUE; // Index subsections in linear RTF
114	// Linear RTF method of including bitmaps. Can be "includepicture", "hex"
115	char *bitmapMethod = copystring("includepicture");
116	bool upperCaseNames = FALSE;
117	// HTML background and text colours
118	char *backgroundImageString = NULL;
119	char *backgroundColourString = copystring("255;255;255");
120	char *textColourString = NULL;
121	char *linkColourString = NULL;
122	char *followedLinkColourString = NULL;
123	bool combineSubSections = FALSE;
124
125	/*
126	* International support
127	*/
128
129	// Names to help with internationalisation
130	char *ContentsNameString = copystring("Contents");
131	char *AbstractNameString = copystring("Abstract");
132	char *GlossaryNameString = copystring("Glossary");
133	char *ReferencesNameString = copystring("References");
134	char *FiguresNameString = copystring("List of Figures");
135	char *TablesNameString = copystring("List of Tables");
136	char *FigureNameString = copystring("Figure");
137	char *TableNameString = copystring("Table");
138	char *IndexNameString = copystring("Index");
139	char *ChapterNameString = copystring("chapter");
140	char *SectionNameString = copystring("section");
141	char *SubsectionNameString = copystring("subsection");
142	char *SubsubsectionNameString = copystring("subsubsection");
143	char *UpNameString = copystring("Up");
144
145	/*
146	* Section numbering
147	*
148	*/
149
150	int chapterNo = 0;
151	int sectionNo = 0;
152	int subsectionNo = 0;
153	int subsubsectionNo = 0;
154	int figureNo = 0;
155	int tableNo = 0;
156
157	/*
158	* Other variables
159	*
160	*/
161
162	FILE *CurrentOutput1 = NULL;
163	FILE *CurrentOutput2 = NULL;
164	FILE *Inputs[15];
165	int LineNumbers[15];
166	char *FileNames[15];
167	int CurrentInputIndex = 0;
168
169	char *TexFileRoot = NULL;
170	char *TexBibName = NULL; // Bibliography output file name
171	char *TexTmpBibName = NULL; // Temporary bibliography output file name
172	bool isSync = FALSE; // If TRUE, should not yield to other processes.
173	bool stopRunning = FALSE; // If TRUE, should abort.
174
175	static int currentColumn = 0;
176	char *currentArgData = NULL;
177	bool haveArgData = FALSE; // If TRUE, we're simulating the data.
178	TexChunk *currentArgument = NULL;
179	TexChunk *nextChunk = NULL;
180	bool isArgOptional = FALSE;
446dd881	181	int noArgs = 0;
9a29912f JS	182
	183	TexChunk *TopLevel = NULL;
	184	// wxList MacroDefs(wxKEY_STRING);
	185	wxHashTable MacroDefs(wxKEY_STRING);
	186	wxStringList IgnorableInputFiles; // Ignorable \input files, e.g. psbox.tex
	187	char *BigBuffer = NULL; // For reading in large chunks of text
	188	TexMacroDef *SoloBlockDef = NULL;
	189	TexMacroDef *VerbatimMacroDef = NULL;
	190
	191	#define IncrementLineNumber() LineNumbers[CurrentInputIndex] ++
	192
	193	void TexOutput(char *s, bool ordinaryText)
	194	{
	195	int len = strlen(s);
	196
	197	// Update current column, but only if we're guaranteed to
	198	// be ordinary text (not mark-up stuff)
	199	int i;
	200	if (ordinaryText)
	201	for (i = 0; i < len; i++)
	202	{
	203	if (s[i] == 13 \|\| s[i] == 10)
	204	currentColumn = 0;
	205	else
	206	currentColumn ++;
	207	}
	208
	209	if (CurrentOutput1)
	210	fprintf(CurrentOutput1, "%s", s);
	211	if (CurrentOutput2)
	212	fprintf(CurrentOutput2, "%s", s);
	213	}
	214
	215	/*
	216	* Try to find a Latex macro, in one of the following forms:
	217	* (1) \begin{} ... \end{}
	218	* (2) \macroname{arg1}...{argn}
	219	* (3) {\bf arg1}
	220	*/
	221
	222	void ForbidWarning(TexMacroDef *def)
	223	{
	224	char buf[100];
	225	switch (def->forbidden)
	226	{
	227	case FORBID_WARN:
	228	{
	229	sprintf(buf, "Warning: it is recommended that command %s is not used.", def->name);
	230	OnInform(buf);
	231	break;
	232	}
	233	case FORBID_ABSOLUTELY:
	234	{
	235	sprintf(buf, "Error: command %s cannot be used and will lead to errors.", def->name);
	236	OnInform(buf);
	237	break;
	238	}
	239	default:
	240	break;
	241	}
	242	}
	243
	244	TexMacroDef MatchMacro(char buffer, int pos, char env, bool parseToBrace)
	245	{
246	*parseToBrace = TRUE;
247	int i = (*pos);
248	TexMacroDef *def = NULL;
249	char macroBuf[40];
250
251	// First, try to find begin{thing}
252	if (strncmp(buffer+i, "begin{", 6) == 0)
253	{
254	i += 6;
255
256	int j = i;
257	while ((isalpha(buffer[j]) \|\| buffer[j] == '*') && ((j - i) < 39))
258	{
259	macroBuf[j-i] = buffer[j];
260	j ++;
261	}
262	macroBuf[j-i] = 0;
263	def = (TexMacroDef *)MacroDefs.Get(macroBuf);
264
265	if (def)
266	{
267	*pos = j + 1; // BUGBUG Should this be + 1???
268	*env = def->name;
269	ForbidWarning(def);
270	return def;
271	}
272	else return NULL;
273	}
274
275	// Failed, so try to find macro from definition list
276	int j = i;
277
278	// First try getting a one-character macro, but ONLY
279	// if these TWO characters are not both alphabetical (could
280	// be a longer macro)
281	if (!(isalpha(buffer[i]) && isalpha(buffer[i+1])))
282	{
283	macroBuf[0] = buffer[i];
284	macroBuf[1] = 0;
285
286	def = (TexMacroDef *)MacroDefs.Get(macroBuf);
287	if (def) j ++;
288	}
289
290	if (!def)
291	{
292	while ((isalpha(buffer[j]) \|\| buffer[j] == '*') && ((j - i) < 39))
293	{
294	macroBuf[j-i] = buffer[j];
295	j ++;
296	}
297	macroBuf[j-i] = 0;
298	def = (TexMacroDef *)MacroDefs.Get(macroBuf);
299	}
300
301	if (def)
302	{
303	i = j;
304
305	// We want to check whether this is a space-consuming macro
306	// (e.g. {\bf word})
307	// No brace, e.g. \input thing.tex instead of \input{thing};
308	// or a numeric argument, such as \parindent0pt
309	if ((def->no_args > 0) && ((buffer[i] == 32) \|\| (buffer[i] == '=') \|\| (isdigit(buffer[i]))))
310	{
311	if ((buffer[i] == 32) \|\| (buffer[i] == '='))
312	i ++;
313
314	*parseToBrace = FALSE;
315	}
316	*pos = i;
317	ForbidWarning(def);
318	return def;
319	}
320	return NULL;
321	}
322
323	void EatWhiteSpace(char buffer, int pos)
324	{
325	int len = strlen(buffer);
326	int j = *pos;
327	bool keepGoing = TRUE;
328	bool moreLines = TRUE;
329	while ((j < len) && keepGoing &&
330	(buffer[j] == 10 \|\| buffer[j] == 13 \|\| buffer[j] == ' ' \|\| buffer[j] == 9))
331	{
332	j ++;
333	if (j >= len)
334	{
335	if (moreLines)
336	{
337	moreLines = read_a_line(buffer);
338	len = strlen(buffer);
339	j = 0;
340	}
341	else
342	keepGoing = FALSE;
343	}
344	}
345	*pos = j;
346	}
347
348	bool FindEndEnvironment(char buffer, int pos, char *env)
349	{
350	int i = (*pos);
351
352	// Try to find end{thing}
353	if ((strncmp(buffer+i, "end{", 4) == 0) &&
354	(strncmp(buffer+i+4, env, strlen(env)) == 0))
355	{
356	*pos = i + 5 + strlen(env);
357	return TRUE;
358	}
359	else return FALSE;
360	}
361
362	bool readingVerbatim = FALSE;
363	bool readInVerbatim = FALSE; // Within a verbatim, but not nec. verbatiminput
364
365	bool read_a_line(char *buf)
366	{
367	if (CurrentInputIndex < 0)
368	{
369	buf[0] = 0;
370	return FALSE;
371	}
372
373	int ch = -2;
374	int i = 0;
375	buf[0] = 0;
376	while (ch != EOF && ch != 10)
377	{
378	if (((i == 14) && (strncmp(buf, "\\end{verbatim}", 14) == 0)) \|\|
379	((i == 16) && (strncmp(buf, "\\end{toocomplex}", 16) == 0)))
380	readInVerbatim = FALSE;
381
382	ch = getc(Inputs[CurrentInputIndex]);
383	if (ch != EOF)
384	{
385	// Check for 2 consecutive newlines and replace with \par
386	if (ch == 10 && !readInVerbatim)
387	{
388	int ch1 = getc(Inputs[CurrentInputIndex]);
389	if ((ch1 == 10) \|\| (ch1 == 13))
390	{
391	// Eliminate newline (10) following DOS linefeed
392	if (ch1 == 13) ch1 = getc(Inputs[CurrentInputIndex]);
393	buf[i] = 0;
394	IncrementLineNumber();
395	// strcat(buf, "\\par\n");
396	// i += 6;
397	strcat(buf, "\\par");
398	i += 5;
399	}
400	else
401	{
402	ungetc(ch1, Inputs[CurrentInputIndex]);
403	buf[i] = ch;
404	i ++;
405	}
406	}
407	else
408	{
409
410	// Convert embedded characters to RTF equivalents
411	switch(ch)
412	{
413