[deliverable/binutils-gdb.git] / gdb / tui / tuiSource.c

/* TUI display source window.

   Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
   Inc.

   Contributed by Hewlett-Packard Company.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
   "defs.h" should be included first.  Unfortunatly some systems
   (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
   and they clash with "bfd.h"'s definiton of true/false.  The correct
   fix is to remove true/false from "bfd.h", however, until that
   happens, hack around it by including "config.h" and <curses.h>
   first.  */

#include "config.h"
#ifdef HAVE_NCURSES_H       
#include <ncurses.h>
#else
#ifdef HAVE_CURSES_H
#include <curses.h>
#endif
#endif

#include "defs.h"
#include <ctype.h>
#include "symtab.h"
#include "frame.h"
#include "breakpoint.h"
#include "source.h"
#include "symtab.h"

#include "tui.h"
#include "tuiData.h"
#include "tuiStack.h"
#include "tuiSourceWin.h"
#include "tuiSource.h"


/*****************************************
** STATIC LOCAL FUNCTIONS FORWARD DECLS    **
******************************************/

static struct breakpoint *_hasBreak (char *, int);


/*
   ** tuiSetSourceContent().
   **    Function to display source in the source window.
 */
TuiStatus
tuiSetSourceContent (struct symtab *s, int lineNo, int noerror)
{
  TuiStatus ret = TUI_FAILURE;

  if (s != (struct symtab *) NULL && s->filename != (char *) NULL)
    {
      register FILE *stream;
      register int i, desc, c, lineWidth, nlines;
      register char *srcLine = 0;

      if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS)
	{
	  lineWidth = srcWin->generic.width - 1;
	  /*
	     ** Take hilite (window border) into account, when calculating
	     ** the number of lines
	   */
	  nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo;
	  desc = open_source_file (s);
	  if (desc < 0)
	    {
	      if (!noerror)
		{
		  char *name = alloca (strlen (s->filename) + 100);
		  sprintf (name, "%s:%d", s->filename, lineNo);
		  print_sys_errmsg (name, errno);
		}
	      ret = TUI_FAILURE;
	    }
	  else
	    {
	      if (s->line_charpos == 0)
		find_source_lines (s, desc);

	      if (lineNo < 1 || lineNo > s->nlines)
		{
		  close (desc);
		  printf_unfiltered (
			  "Line number %d out of range; %s has %d lines.\n",
				      lineNo, s->filename, s->nlines);
		}
	      else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0)
		{
		  close (desc);
		  perror_with_name (s->filename);
		}
	      else
		{
		  register int offset, curLineNo, curLine, curLen, threshold;
		  TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
                  TuiSourceInfoPtr src = &srcWin->detail.sourceInfo;

                  if (srcWin->generic.title)
                    xfree (srcWin->generic.title);
                  srcWin->generic.title = xstrdup (s->filename);

                  if (src->filename)
                    xfree (src->filename);
                  src->filename = xstrdup (s->filename);

		  /* Determine the threshold for the length of the line
                     and the offset to start the display.  */
		  offset = src->horizontalOffset;
		  threshold = (lineWidth - 1) + offset;
		  stream = fdopen (desc, FOPEN_RT);
		  clearerr (stream);
		  curLine = 0;
		  curLineNo = src->startLineOrAddr.lineNo = lineNo;
		  if (offset > 0)
		    srcLine = (char *) xmalloc (
					   (threshold + 1) * sizeof (char));
		  while (curLine < nlines)
		    {
		      TuiWinElementPtr element = (TuiWinElementPtr)
		      srcWin->generic.content[curLine];
		      struct breakpoint *bp;

		      /* get the first character in the line */
		      c = fgetc (stream);

		      if (offset == 0)
			srcLine = ((TuiWinElementPtr)
				   srcWin->generic.content[
					curLine])->whichElement.source.line;
		      /* Init the line with the line number */
		      sprintf (srcLine, "%-6d", curLineNo);
		      curLen = strlen (srcLine);
		      i = curLen -
			((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ());
		      while (i < tuiDefaultTabLen ())
			{
			  srcLine[curLen] = ' ';
			  i++;
			  curLen++;
			}
		      srcLine[curLen] = (char) 0;

		      /*
		         ** Set whether element is the execution point and
		         ** whether there is a break point on it.
		       */
		      element->whichElement.source.lineOrAddr.lineNo =
			curLineNo;
		      element->whichElement.source.isExecPoint =
			(strcmp (((TuiWinElementPtr)
			locator->content[0])->whichElement.locator.fileName,
				 s->filename) == 0
			 && curLineNo == ((TuiWinElementPtr)
			 locator->content[0])->whichElement.locator.lineNo);
		      bp = _hasBreak (s->filename, curLineNo);
		      element->whichElement.source.hasBreak =
			(bp != (struct breakpoint *) NULL &&
			 (!element->whichElement.source.isExecPoint ||
			  (bp->disposition != disp_del || bp->hit_count <= 0)));
		      if (c != EOF)
			{
			  i = strlen (srcLine) - 1;
			  do
			    {
			      if ((c != '\n') &&
				  (c != '\r') && (++i < threshold))
				{
				  if (c < 040 && c != '\t')
				    {
				      srcLine[i++] = '^';
				      srcLine[i] = c + 0100;
				    }
				  else if (c == 0177)
				    {
				      srcLine[i++] = '^';
				      srcLine[i] = '?';
				    }
				  else
				    {	/*
					   ** Store the charcter in the line
					   ** buffer.  If it is a tab, then
					   ** translate to the correct number of
					   ** chars so we don't overwrite our
					   ** buffer.
					 */
				      if (c == '\t')
					{
					  int j, maxTabLen = tuiDefaultTabLen ();

					  for (j = i - (
					       (i / maxTabLen) * maxTabLen);
					       ((j < maxTabLen) &&
						i < threshold);
					       i++, j++)
					    srcLine[i] = ' ';
					  i--;
					}
				      else
					srcLine[i] = c;
				    }
				  srcLine[i + 1] = 0;
				}
			      else
				{	/*
					   ** if we have not reached EOL, then eat
					   ** chars until we do
					 */
				  while (c != EOF && c != '\n' && c != '\r')
				    c = fgetc (stream);
				}
			    }
			  while (c != EOF && c != '\n' && c != '\r' &&
				 i < threshold && (c = fgetc (stream)));
			}
		      /* Now copy the line taking the offset into account */
		      if (strlen (srcLine) > offset)
			strcpy (((TuiWinElementPtr) srcWin->generic.content[
					curLine])->whichElement.source.line,
				&srcLine[offset]);
		      else
			((TuiWinElementPtr)
			 srcWin->generic.content[
			  curLine])->whichElement.source.line[0] = (char) 0;
		      curLine++;
		      curLineNo++;
		    }
		  if (offset > 0)
		    tuiFree (srcLine);
		  fclose (stream);
		  srcWin->generic.contentSize = nlines;
		  ret = TUI_SUCCESS;
		}
	    }
	}
    }
  return ret;
}				/* tuiSetSourceContent */


/* elz: this function sets the contents of the source window to empty
   except for a line in the middle with a warning message about the
   source not being available. This function is called by
   tuiEraseSourceContents, which in turn is invoked when the source files
   cannot be accessed */

void
tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string)
{
  int lineWidth;
  int nLines;
  int curr_line = 0;

  lineWidth = winInfo->generic.width - 1;
  nLines = winInfo->generic.height - 2;

  /* set to empty each line in the window, except for the one
     which contains the message */
  while (curr_line < winInfo->generic.contentSize)
    {
      /* set the information related to each displayed line
         to null: i.e. the line number is 0, there is no bp,
         it is not where the program is stopped */

      TuiWinElementPtr element =
      (TuiWinElementPtr) winInfo->generic.content[curr_line];
      element->whichElement.source.lineOrAddr.lineNo = 0;
      element->whichElement.source.isExecPoint = FALSE;
      element->whichElement.source.hasBreak = FALSE;

      /* set the contents of the line to blank */
      element->whichElement.source.line[0] = (char) 0;

      /* if the current line is in the middle of the screen, then we want to
         display the 'no source available' message in it.
         Note: the 'weird' arithmetic with the line width and height comes from
         the function tuiEraseSourceContent. We need to keep the screen and the
         window's actual contents in synch */

      if (curr_line == (nLines / 2 + 1))
	{
	  int i;
	  int xpos;
	  int warning_length = strlen (warning_string);
	  char *srcLine;

	  srcLine = element->whichElement.source.line;

	  if (warning_length >= ((lineWidth - 1) / 2))
	    xpos = 1;
	  else
	    xpos = (lineWidth - 1) / 2 - warning_length;

	  for (i = 0; i < xpos; i++)
	    srcLine[i] = ' ';

	  sprintf (srcLine + i, "%s", warning_string);

	  for (i = xpos + warning_length; i < lineWidth; i++)
	    srcLine[i] = ' ';

	  srcLine[i] = '\n';

	}			/* end if */

      curr_line++;

    }				/* end while */

}				/*tuiSetSourceContentNil */


/*
   ** tuiShowSource().
   **        Function to display source in the source window.  This function
   **        initializes the horizontal scroll to 0.
 */
void
tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror)
{
  srcWin->detail.sourceInfo.horizontalOffset = 0;
  tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror);

  return;
}				/* tuiShowSource */


/*
   ** tuiSourceIsDisplayed().
   **        Answer whether the source is currently displayed in the source window.
 */
int
tuiSourceIsDisplayed (char *fname)
{
  return (srcWin->generic.contentInUse &&
	  (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())->
		  content[0])->whichElement.locator.fileName, fname) == 0));
}				/* tuiSourceIsDisplayed */


/*
   ** tuiVerticalSourceScroll().
   **      Scroll the source forward or backward vertically
 */
void
tuiVerticalSourceScroll (TuiScrollDirection scrollDirection,
                         int numToScroll)
{
  if (srcWin->generic.content != (OpaquePtr) NULL)
    {
      TuiLineOrAddress l;
      struct symtab *s;
      TuiWinContent content = (TuiWinContent) srcWin->generic.content;

      if (current_source_symtab == (struct symtab *) NULL)
	s = find_pc_symtab (selected_frame->pc);
      else
	s = current_source_symtab;

      if (scrollDirection == FORWARD_SCROLL)
	{
	  l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo +
	    numToScroll;
	  if (l.lineNo > s->nlines)
	    /*line = s->nlines - winInfo->generic.contentSize + 1; */
	    /*elz: fix for dts 23398 */
	    l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo;
	}
      else
	{
	  l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo -
	    numToScroll;
	  if (l.lineNo <= 0)
	    l.lineNo = 1;
	}
      if (identify_source_line (s, l.lineNo, 0, -1) == 1)
        tuiUpdateSourceWindowAsIs (srcWin, s, l, FALSE);
    }

  return;
}				/* tuiVerticalSourceScroll */


/*****************************************
** STATIC LOCAL FUNCTIONS                 **
******************************************/

/*
   ** _hasBreak().
   **        Answer whether there is a break point at the input line in
   **        the source file indicated
 */
static struct breakpoint *
_hasBreak (char *sourceFileName, int lineNo)
{
  struct breakpoint *bpWithBreak = (struct breakpoint *) NULL;
  struct breakpoint *bp;
  extern struct breakpoint *breakpoint_chain;


  for (bp = breakpoint_chain;
       (bp != (struct breakpoint *) NULL &&
	bpWithBreak == (struct breakpoint *) NULL);
       bp = bp->next)
    if (bp->source_file
	&& (strcmp (sourceFileName, bp->source_file) == 0)
	&& (lineNo == bp->line_number))
      bpWithBreak = bp;

  return bpWithBreak;
}				/* _hasBreak */
Commit	Line	Data
f377b406	1	/* TUI display source window.
f33c6cbf AC	2
	3	Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
	4	Inc.
	5
f377b406 SC	6	Contributed by Hewlett-Packard Company.
	7
	8	This file is part of GDB.
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 59 Temple Place - Suite 330,
	23	Boston, MA 02111-1307, USA. */
c906108c	24
f33c6cbf AC	25	/* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
	26	"defs.h" should be included first. Unfortunatly some systems
	27	(currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
	28	and they clash with "bfd.h"'s definiton of true/false. The correct
	29	fix is to remove true/false from "bfd.h", however, until that
	30	happens, hack around it by including "config.h" and <curses.h>
	31	first. */
	32
4e8f7a8b DJ	33	#include "config.h"
	34	#ifdef HAVE_NCURSES_H
	35	#include <ncurses.h>
	36	#else
	37	#ifdef HAVE_CURSES_H
	38	#include <curses.h>
	39	#endif
	40	#endif
	41
c906108c SS	42	#include "defs.h"
	43	#include <ctype.h>
	44	#include "symtab.h"
	45	#include "frame.h"
	46	#include "breakpoint.h"
c2c6d25f	47	#include "source.h"
a4b99e53	48	#include "symtab.h"
c906108c SS	49
	50	#include "tui.h"
	51	#include "tuiData.h"
	52	#include "tuiStack.h"
	53	#include "tuiSourceWin.h"
	54	#include "tuiSource.h"
	55
	56
c906108c SS	57	/*****************************************
	58	STATIC LOCAL FUNCTIONS FORWARD DECLS
	59	******************************************/
	60
a14ed312	61	static struct breakpoint _hasBreak (char , int);
c906108c SS	62
c906108c SS	63
c906108c	64	/*
c5aa993b JM	65	** tuiSetSourceContent().
	66	** Function to display source in the source window.
	67	*/
c906108c	68	TuiStatus
eca6576c	69	tuiSetSourceContent (struct symtab *s, int lineNo, int noerror)
c906108c SS	70	{
	71	TuiStatus ret = TUI_FAILURE;
	72
	73	if (s != (struct symtab ) NULL && s->filename != (char ) NULL)
	74	{
	75	register FILE *stream;
	76	register int i, desc, c, lineWidth, nlines;
bc6b7f04	77	register char *srcLine = 0;
c906108c SS	78
	79	if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS)
	80	{
	81	lineWidth = srcWin->generic.width - 1;
	82	/*
c5aa993b JM	83	** Take hilite (window border) into account, when calculating
	84	** the number of lines
	85	*/
c906108c SS	86	nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo;
	87	desc = open_source_file (s);
	88	if (desc < 0)
	89	{
	90	if (!noerror)
	91	{
	92	char *name = alloca (strlen (s->filename) + 100);
	93	sprintf (name, "%s:%d", s->filename, lineNo);
	94	print_sys_errmsg (name, errno);
	95	}
	96	ret = TUI_FAILURE;
	97	}
	98	else
	99	{
	100	if (s->line_charpos == 0)
	101	find_source_lines (s, desc);
	102
	103	if (lineNo < 1 \|\| lineNo > s->nlines)
	104	{
	105	close (desc);
	106	printf_unfiltered (
	107	"Line number %d out of range; %s has %d lines.\n",
	108	lineNo, s->filename, s->nlines);
	109	}
	110	else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0)
	111	{
	112	close (desc);
	113	perror_with_name (s->filename);
	114	}
	115	else
	116	{
	117	register int offset, curLineNo, curLine, curLen, threshold;
	118	TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
bc6b7f04 SC	119	TuiSourceInfoPtr src = &srcWin->detail.sourceInfo;
	120
	121	if (srcWin->generic.title)
	122	xfree (srcWin->generic.title);
	123	srcWin->generic.title = xstrdup (s->filename);
	124
	125	if (src->filename)
	126	xfree (src->filename);
	127	src->filename = xstrdup (s->filename);
	128
	129	/* Determine the threshold for the length of the line
	130	and the offset to start the display. */
	131	offset = src->horizontalOffset;
c906108c SS	132	threshold = (lineWidth - 1) + offset;
	133	stream = fdopen (desc, FOPEN_RT);
	134	clearerr (stream);
	135	curLine = 0;
bc6b7f04	136	curLineNo = src->startLineOrAddr.lineNo = lineNo;
c906108c SS	137	if (offset > 0)
	138	srcLine = (char *) xmalloc (
	139	(threshold + 1) * sizeof (char));
	140	while (curLine < nlines)
	141	{
	142	TuiWinElementPtr element = (TuiWinElementPtr)
	143	srcWin->generic.content[curLine];
	144	struct breakpoint *bp;
	145
	146	/* get the first character in the line */
	147	c = fgetc (stream);
	148
	149	if (offset == 0)
	150	srcLine = ((TuiWinElementPtr)
	151	srcWin->generic.content[
	152	curLine])->whichElement.source.line;
	153	/* Init the line with the line number */
	154	sprintf (srcLine, "%-6d", curLineNo);
	155	curLen = strlen (srcLine);
	156	i = curLen -
	157	((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ());
	158	while (i < tuiDefaultTabLen ())
	159	{
	160	srcLine[curLen] = ' ';
	161	i++;
	162	curLen++;
	163	}
	164	srcLine[curLen] = (char) 0;
	165
	166	/*
c5aa993b JM	167	** Set whether element is the execution point and
	168	** whether there is a break point on it.
	169	*/
c906108c SS	170	element->whichElement.source.lineOrAddr.lineNo =
	171	curLineNo;
	172	element->whichElement.source.isExecPoint =
	173	(strcmp (((TuiWinElementPtr)
	174	locator->content[0])->whichElement.locator.fileName,
	175	s->filename) == 0
	176	&& curLineNo == ((TuiWinElementPtr)
	177	locator->content[0])->whichElement.locator.lineNo);
	178	bp = _hasBreak (s->filename, curLineNo);
	179	element->whichElement.source.hasBreak =
	180	(bp != (struct breakpoint *) NULL &&
	181	(!element->whichElement.source.isExecPoint \|\|
b5de0fa7	182	(bp->disposition != disp_del \|\| bp->hit_count <= 0)));
c906108c SS	183	if (c != EOF)
	184	{
	185	i = strlen (srcLine) - 1;
	186	do
	187	{
	188	if ((c != '\n') &&
	189	(c != '\r') && (++i < threshold))
	190	{
	191	if (c < 040 && c != '\t')
	192	{
	193	srcLine[i++] = '^';
	194	srcLine[i] = c + 0100;
	195	}
	196	else if (c == 0177)
	197	{
	198	srcLine[i++] = '^';
	199	srcLine[i] = '?';
	200	}
	201	else
	202	{ /*
c5aa993b JM	203	** Store the charcter in the line
	204	** buffer. If it is a tab, then
	205	** translate to the correct number of
	206	** chars so we don't overwrite our
	207	** buffer.
	208	*/
c906108c SS	209	if (c == '\t')
	210	{
	211	int j, maxTabLen = tuiDefaultTabLen ();
	212
	213	for (j = i - (
	214	(i / maxTabLen) * maxTabLen);
	215	((j < maxTabLen) &&
	216	i < threshold);
	217	i++, j++)
	218	srcLine[i] = ' ';
	219	i--;
	220	}
	221	else
	222	srcLine[i] = c;
	223	}
	224	srcLine[i + 1] = 0;
	225	}
	226	else
	227	{ /*
c5aa993b JM	228	** if we have not reached EOL, then eat
	229	** chars until we do
	230	*/
c906108c SS	231	while (c != EOF && c != '\n' && c != '\r')
	232	c = fgetc (stream);
	233	}
	234	}
	235	while (c != EOF && c != '\n' && c != '\r' &&
	236	i < threshold && (c = fgetc (stream)));
	237	}
	238	/* Now copy the line taking the offset into account */
	239	if (strlen (srcLine) > offset)
	240	strcpy (((TuiWinElementPtr) srcWin->generic.content[
	241	curLine])->whichElement.source.line,
	242	&srcLine[offset]);
	243	else
	244	((TuiWinElementPtr)
	245	srcWin->generic.content[
	246	curLine])->whichElement.source.line[0] = (char) 0;
	247	curLine++;
	248	curLineNo++;
	249	}
	250	if (offset > 0)
	251	tuiFree (srcLine);
	252	fclose (stream);
	253	srcWin->generic.contentSize = nlines;
	254	ret = TUI_SUCCESS;
	255	}
	256	}
	257	}
	258	}
	259	return ret;
	260	} /* tuiSetSourceContent */
	261
	262
	263	/* elz: this function sets the contents of the source window to empty
	264	except for a line in the middle with a warning message about the
	265	source not being available. This function is called by
	266	tuiEraseSourceContents, which in turn is invoked when the source files
c5aa993b	267	cannot be accessed */
c906108c SS	268
c906108c SS	269	void
eca6576c	270	tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string)
c906108c SS	271	{
	272	int lineWidth;
	273	int nLines;
	274	int curr_line = 0;
	275
	276	lineWidth = winInfo->generic.width - 1;
	277	nLines = winInfo->generic.height - 2;
	278
	279	/* set to empty each line in the window, except for the one
c5aa993b	280	which contains the message */
c906108c SS	281	while (curr_line < winInfo->generic.contentSize)
	282	{
	283	/* set the information related to each displayed line
c5aa993b JM	284	to null: i.e. the line number is 0, there is no bp,
c5aa993b JM	285	it is not where the program is stopped */
c906108c SS	286
	287	TuiWinElementPtr element =
	288	(TuiWinElementPtr) winInfo->generic.content[curr_line];
	289	element->whichElement.source.lineOrAddr.lineNo = 0;
	290	element->whichElement.source.isExecPoint = FALSE;
	291	element->whichElement.source.hasBreak = FALSE;
	292
c5aa993b	293	/* set the contents of the line to blank */
c906108c SS	294	element->whichElement.source.line[0] = (char) 0;
	295
	296	/* if the current line is in the middle of the screen, then we want to
c5aa993b JM	297	display the 'no source available' message in it.
	298	Note: the 'weird' arithmetic with the line width and height comes from
	299	the function tuiEraseSourceContent. We need to keep the screen and the
	300	window's actual contents in synch */
c906108c SS	301
	302	if (curr_line == (nLines / 2 + 1))
	303	{
	304	int i;
	305	int xpos;
	306	int warning_length = strlen (warning_string);
	307	char *srcLine;
	308
	309	srcLine = element->whichElement.source.line;
	310
	311	if (warning_length >= ((lineWidth - 1) / 2))
	312	xpos = 1;
	313	else
	314	xpos = (lineWidth - 1) / 2 - warning_length;
	315
	316	for (i = 0; i < xpos; i++)
	317	srcLine[i] = ' ';
	318
	319	sprintf (srcLine + i, "%s", warning_string);
	320
	321	for (i = xpos + warning_length; i < lineWidth; i++)
	322	srcLine[i] = ' ';
	323
	324	srcLine[i] = '\n';
	325
	326	} /* end if */
	327
	328	curr_line++;
	329
c5aa993b	330	} /* end while */
c906108c	331
c5aa993b	332	} /tuiSetSourceContentNil /
c906108c SS	333
	334
	335
	336
	337	/*
c5aa993b JM	338	** tuiShowSource().
	339	** Function to display source in the source window. This function
	340	** initializes the horizontal scroll to 0.
	341	*/
c906108c	342	void
a4b99e53	343	tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror)
c906108c SS	344	{
c906108c SS	345	srcWin->detail.sourceInfo.horizontalOffset = 0;
a4b99e53	346	tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror);
c906108c SS	347
	348	return;
	349	} /* tuiShowSource */
	350
	351
	352	/*
c5aa993b JM	353	** tuiSourceIsDisplayed().
	354	** Answer whether the source is currently displayed in the source window.
	355	*/
c906108c	356	int
eca6576c	357	tuiSourceIsDisplayed (char *fname)
c906108c SS	358	{
	359	return (srcWin->generic.contentInUse &&
	360	(strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())->
	361	content[0])->whichElement.locator.fileName, fname) == 0));
	362	} /* tuiSourceIsDisplayed */
	363
	364
	365	/*
c5aa993b JM	366	** tuiVerticalSourceScroll().
	367	** Scroll the source forward or backward vertically
	368	*/
c906108c	369	void
a4b99e53 SC	370	tuiVerticalSourceScroll (TuiScrollDirection scrollDirection,
a4b99e53 SC	371	int numToScroll)
c906108c SS	372	{
	373	if (srcWin->generic.content != (OpaquePtr) NULL)
	374	{
a4b99e53	375	TuiLineOrAddress l;
c906108c SS	376	struct symtab *s;
	377	TuiWinContent content = (TuiWinContent) srcWin->generic.content;
	378
	379	if (current_source_symtab == (struct symtab *) NULL)
	380	s = find_pc_symtab (selected_frame->pc);
	381	else
	382	s = current_source_symtab;
	383
	384	if (scrollDirection == FORWARD_SCROLL)
	385	{
a4b99e53	386	l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo +
c906108c	387	numToScroll;
a4b99e53	388	if (l.lineNo > s->nlines)
c5aa993b JM	389	/line = s->nlines - winInfo->generic.contentSize + 1; /
c5aa993b JM	390	/elz: fix for dts 23398 /
a4b99e53	391	l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo;
c906108c SS	392	}
	393	else
	394	{
a4b99e53	395	l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo -
c906108c	396	numToScroll;
a4b99e53 SC	397	if (l.lineNo <= 0)
a4b99e53 SC	398	l.lineNo = 1;
c906108c	399	}
a4b99e53 SC	400	if (identify_source_line (s, l.lineNo, 0, -1) == 1)
a4b99e53 SC	401	tuiUpdateSourceWindowAsIs (srcWin, s, l, FALSE);
c906108c SS	402	}
	403
	404	return;
	405	} /* tuiVerticalSourceScroll */
	406
	407
	408	/*****************************************
	409	STATIC LOCAL FUNCTIONS
	410	******************************************/
	411
	412	/*
c5aa993b JM	413	** _hasBreak().
	414	** Answer whether there is a break point at the input line in
	415	** the source file indicated
	416	*/
c906108c	417	static struct breakpoint *
eca6576c	418	_hasBreak (char *sourceFileName, int lineNo)
c906108c SS	419	{
	420	struct breakpoint bpWithBreak = (struct breakpoint ) NULL;
	421	struct breakpoint *bp;
	422	extern struct breakpoint *breakpoint_chain;
	423
	424
	425	for (bp = breakpoint_chain;
	426	(bp != (struct breakpoint *) NULL &&
	427	bpWithBreak == (struct breakpoint *) NULL);
	428	bp = bp->next)
75fd9bc1 SC	429	if (bp->source_file
	430	&& (strcmp (sourceFileName, bp->source_file) == 0)
	431	&& (lineNo == bp->line_number))
c906108c SS	432	bpWithBreak = bp;
	433
	434	return bpWithBreak;
	435	} /* _hasBreak */