52575520c3
* tui.c (tui_show_source): Don't access current_source_symtab, use accessor function instead. Include source.h and symtab.h * tuiDisassem.c (tuiShowDisassemAndUpdateSource, tuiVerticalDisassemScroll): Use accessor functions for current source line and symtab. Include source.h. * tuiLayout.c (_extractDisplayStartAddr): Use accessor functions for current source line and symtab. Include source.h. * tuiWin.c (_makeVisibleWithNewHeight): Ditto. * tuiSourceWin.c (tuiUpdateSourceWindowAsIs, tuiHorizontalSourceScroll): Ditto. * tuiSource.c (tuiVerticalSourceScroll): Ditto.
366 lines
10 KiB
C
366 lines
10 KiB
C
/* TUI display source window.
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Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
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Inc.
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Contributed by Hewlett-Packard Company.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
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"defs.h" should be included first. Unfortunatly some systems
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(currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
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and they clash with "bfd.h"'s definiton of true/false. The correct
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fix is to remove true/false from "bfd.h", however, until that
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happens, hack around it by including "config.h" and <curses.h>
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first. */
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#include "config.h"
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#ifdef HAVE_NCURSES_H
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#include <ncurses.h>
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#else
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#ifdef HAVE_CURSES_H
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#include <curses.h>
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#endif
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#endif
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#include "defs.h"
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#include <ctype.h>
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#include "symtab.h"
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#include "frame.h"
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#include "breakpoint.h"
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#include "source.h"
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#include "symtab.h"
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#include "tui.h"
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#include "tuiData.h"
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#include "tuiStack.h"
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#include "tuiSourceWin.h"
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#include "tuiSource.h"
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/* Function to display source in the source window. */
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TuiStatus
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tuiSetSourceContent (struct symtab *s, int lineNo, int noerror)
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{
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TuiStatus ret = TUI_FAILURE;
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if (s != (struct symtab *) NULL && s->filename != (char *) NULL)
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{
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register FILE *stream;
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register int i, desc, c, lineWidth, nlines;
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register char *srcLine = 0;
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if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS)
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{
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lineWidth = srcWin->generic.width - 1;
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/* Take hilite (window border) into account, when calculating
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the number of lines */
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nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo;
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desc = open_source_file (s);
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if (desc < 0)
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{
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if (!noerror)
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{
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char *name = alloca (strlen (s->filename) + 100);
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sprintf (name, "%s:%d", s->filename, lineNo);
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print_sys_errmsg (name, errno);
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}
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ret = TUI_FAILURE;
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}
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else
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{
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if (s->line_charpos == 0)
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find_source_lines (s, desc);
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if (lineNo < 1 || lineNo > s->nlines)
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{
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close (desc);
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printf_unfiltered (
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"Line number %d out of range; %s has %d lines.\n",
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lineNo, s->filename, s->nlines);
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}
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else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0)
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{
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close (desc);
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perror_with_name (s->filename);
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}
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else
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{
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register int offset, curLineNo, curLine, curLen, threshold;
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TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
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TuiSourceInfoPtr src = &srcWin->detail.sourceInfo;
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if (srcWin->generic.title)
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xfree (srcWin->generic.title);
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srcWin->generic.title = xstrdup (s->filename);
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if (src->filename)
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xfree (src->filename);
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src->filename = xstrdup (s->filename);
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/* Determine the threshold for the length of the line
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and the offset to start the display. */
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offset = src->horizontalOffset;
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threshold = (lineWidth - 1) + offset;
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stream = fdopen (desc, FOPEN_RT);
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clearerr (stream);
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curLine = 0;
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curLineNo = src->startLineOrAddr.lineNo = lineNo;
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if (offset > 0)
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srcLine = (char *) xmalloc (
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(threshold + 1) * sizeof (char));
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while (curLine < nlines)
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{
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TuiWinElementPtr element = (TuiWinElementPtr)
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srcWin->generic.content[curLine];
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/* get the first character in the line */
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c = fgetc (stream);
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if (offset == 0)
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srcLine = ((TuiWinElementPtr)
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srcWin->generic.content[
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curLine])->whichElement.source.line;
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/* Init the line with the line number */
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sprintf (srcLine, "%-6d", curLineNo);
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curLen = strlen (srcLine);
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i = curLen -
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((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ());
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while (i < tuiDefaultTabLen ())
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{
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srcLine[curLen] = ' ';
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i++;
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curLen++;
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}
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srcLine[curLen] = (char) 0;
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/* Set whether element is the execution point and
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whether there is a break point on it. */
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element->whichElement.source.lineOrAddr.lineNo =
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curLineNo;
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element->whichElement.source.isExecPoint =
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(strcmp (((TuiWinElementPtr)
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locator->content[0])->whichElement.locator.fileName,
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s->filename) == 0
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&& curLineNo == ((TuiWinElementPtr)
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locator->content[0])->whichElement.locator.lineNo);
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if (c != EOF)
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{
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i = strlen (srcLine) - 1;
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do
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{
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if ((c != '\n') &&
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(c != '\r') && (++i < threshold))
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{
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if (c < 040 && c != '\t')
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{
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srcLine[i++] = '^';
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srcLine[i] = c + 0100;
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}
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else if (c == 0177)
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{
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srcLine[i++] = '^';
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srcLine[i] = '?';
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}
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else
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{ /* Store the charcter in the line
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buffer. If it is a tab, then
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translate to the correct number of
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chars so we don't overwrite our
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buffer. */
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if (c == '\t')
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{
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int j, maxTabLen = tuiDefaultTabLen ();
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for (j = i - (
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(i / maxTabLen) * maxTabLen);
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((j < maxTabLen) &&
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i < threshold);
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i++, j++)
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srcLine[i] = ' ';
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i--;
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}
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else
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srcLine[i] = c;
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}
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srcLine[i + 1] = 0;
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}
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else
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{ /* If we have not reached EOL, then eat
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chars until we do */
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while (c != EOF && c != '\n' && c != '\r')
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c = fgetc (stream);
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}
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}
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while (c != EOF && c != '\n' && c != '\r' &&
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i < threshold && (c = fgetc (stream)));
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}
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/* Now copy the line taking the offset into account */
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if (strlen (srcLine) > offset)
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strcpy (((TuiWinElementPtr) srcWin->generic.content[
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curLine])->whichElement.source.line,
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&srcLine[offset]);
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else
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((TuiWinElementPtr)
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srcWin->generic.content[
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curLine])->whichElement.source.line[0] = (char) 0;
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curLine++;
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curLineNo++;
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}
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if (offset > 0)
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tuiFree (srcLine);
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fclose (stream);
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srcWin->generic.contentSize = nlines;
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ret = TUI_SUCCESS;
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}
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}
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}
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}
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return ret;
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}
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/* elz: this function sets the contents of the source window to empty
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except for a line in the middle with a warning message about the
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source not being available. This function is called by
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tuiEraseSourceContents, which in turn is invoked when the source files
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cannot be accessed */
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void
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tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string)
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{
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int lineWidth;
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int nLines;
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int curr_line = 0;
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lineWidth = winInfo->generic.width - 1;
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nLines = winInfo->generic.height - 2;
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/* set to empty each line in the window, except for the one
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which contains the message */
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while (curr_line < winInfo->generic.contentSize)
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{
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/* set the information related to each displayed line
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to null: i.e. the line number is 0, there is no bp,
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it is not where the program is stopped */
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TuiWinElementPtr element =
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(TuiWinElementPtr) winInfo->generic.content[curr_line];
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element->whichElement.source.lineOrAddr.lineNo = 0;
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element->whichElement.source.isExecPoint = FALSE;
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element->whichElement.source.hasBreak = FALSE;
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/* set the contents of the line to blank */
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element->whichElement.source.line[0] = (char) 0;
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/* if the current line is in the middle of the screen, then we want to
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display the 'no source available' message in it.
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Note: the 'weird' arithmetic with the line width and height comes from
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the function tuiEraseSourceContent. We need to keep the screen and the
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window's actual contents in synch */
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if (curr_line == (nLines / 2 + 1))
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{
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int i;
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int xpos;
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int warning_length = strlen (warning_string);
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char *srcLine;
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srcLine = element->whichElement.source.line;
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if (warning_length >= ((lineWidth - 1) / 2))
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xpos = 1;
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else
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xpos = (lineWidth - 1) / 2 - warning_length;
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for (i = 0; i < xpos; i++)
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srcLine[i] = ' ';
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sprintf (srcLine + i, "%s", warning_string);
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for (i = xpos + warning_length; i < lineWidth; i++)
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srcLine[i] = ' ';
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srcLine[i] = '\n';
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} /* end if */
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curr_line++;
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} /* end while */
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}
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/* Function to display source in the source window. This function
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initializes the horizontal scroll to 0. */
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void
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tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror)
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{
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srcWin->detail.sourceInfo.horizontalOffset = 0;
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tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror);
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}
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/* Answer whether the source is currently displayed in the source window. */
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int
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tuiSourceIsDisplayed (char *fname)
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{
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return (srcWin->generic.contentInUse &&
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(strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())->
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content[0])->whichElement.locator.fileName, fname) == 0));
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}
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/* Scroll the source forward or backward vertically. */
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void
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tuiVerticalSourceScroll (TuiScrollDirection scrollDirection,
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int numToScroll)
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{
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if (srcWin->generic.content != (OpaquePtr) NULL)
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{
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TuiLineOrAddress l;
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struct symtab *s;
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TuiWinContent content = (TuiWinContent) srcWin->generic.content;
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struct symtab_and_line cursal = get_current_source_symtab_and_line ();
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if (cursal.symtab == (struct symtab *) NULL)
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s = find_pc_symtab (selected_frame->pc);
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else
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s = cursal.symtab;
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if (scrollDirection == FORWARD_SCROLL)
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{
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l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo +
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numToScroll;
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if (l.lineNo > s->nlines)
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/*line = s->nlines - winInfo->generic.contentSize + 1; */
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/*elz: fix for dts 23398 */
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l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo;
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}
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else
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{
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l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo -
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numToScroll;
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if (l.lineNo <= 0)
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l.lineNo = 1;
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}
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print_source_lines (s, l.lineNo, l.lineNo + 1, 0);
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}
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}
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